This book describes the current state of the art in cryogenic safety best practice, helping the reader to work with cryogenic systems and materials safely. It brings together information from previous texts, industrial and laboratory safety polices, and recent research papers. Case studies, example problems, and an extensive list of references are included to add to the utility of the text. This book is designed to be useful to everyone affected by cryogenic hazards regardless of their expertise in cryogenics.
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- PRIORITY CLAIM
- Boiler Accessories Companies in India
- Cryogenic Safety
- Proceedings 10 Cryo
- US4776366A - Gaseous fueled torch apparatus and fueling module therefor - Google Patents
- Companies to Target
- Cryogenics Application Ppt
- Cryogenic Engineering: Fifty Years of Progress
- US20050269313A1 - Temperature limited heaters with high power factors - Google Patents
- CU TR 010/2011 "Safety of machinery" - certification and declaration of conformity
PRIORITY CLAIMVIDEO ON THE TOPIC: Lecture 69: Cryogenic refrigeration and liquefaction in natural gas systems - I
The invention relates generally to various torch or torch-like apparatus for cutting, welding, or heating operations involving either metallic or non-metallic materials.
More specifically, the invention relates to a fueling apparatus for supplying fuel to such torch or torch-like apparatuses.
As used herein, the general term "welding", includes welding, brazing, or other known operations by which separate items or pieces of material are joined or fused to one another with the use of flame-producing torch or burner. Cross-reference is hereby made to U. B 4,,, issued June 11, , all of which are owned by the same assignee as the present invention herein and which are hereby incorporated by reference herein.
Various torches, burners, or other flame-producing devices are well-known for use in various operations, such as the welding, cutting or heating of various objects or various materials, including either metallic or non-metallic materials. Such torch or torch-like devices produce a flame upon the combustion of a mixture of air or other oxygen-containing gases with a suitable fuel.
Typically, such suitable fuels include a variety of fuels such as propane, acetylene, natural gas, or other hydrocarbon gaseous fuels. The fuels for use in the above-mentioned operations are generally provided in storage tanks or vessels that are connectable to the torch apparatus. Because of the necessity for purchasing and transporting such fuels in pre-filled storage vessels, or for refilling and transporting previously-existing storage vessels, the provision of such fuels for the various operations described above is frequently very expensive and inconvenient in many applications.
Furthermore, because of the differing operating pressures and other parameters associated with the above-mentioned operations, such fuels are frequently required to be supplied to the torch or torch-like apparatus at different flow rates or at different pressures, thereby resulting in incompatibility or non-exchangeability of equipment among some of the above-mentioned operations.
It is therefore one of the primary objectives of the present invention to provide for a fueling apparatus or a module is adapted for use in supplying a fuel to a torch or torch-like apparatus from a convenient, readily-available, and inexpensive source of said fuel, such as natural gas, for example.
Another of the primary objectives of the present invention is to provide such a fueling apparatus or module capable of delivering a gaseous fuel, such as natural gas, at a wide variety of flow rates and pressures, thereby being compatible and interchangeable among a wide variety of welding, cutting or heating operations.
Still another objective of the present invention is to provide such a fueling apparatus or module capable of being connected to a relatively low pressure gaseous fuel supply source, such as a typical residential or commercial natural gas supply system. A further objective of the present invention is to provide such a fueling apparatus or module that is relatively inexpensive, simple and convenient to use, relatively inexpensive to manufacture, and that is preferably portable in order to maximize its use in a wide variety of locations.
Another objective of the present invention is to provide such a fueling apparatus or module capable of fueling a torch or torch-like apparatus directly from a readily-available gaseous fuel source, as well as being usable for recharging pre-existing gaseous fuel storage tanks for subsequent use in remote locations where no gaseous fuel source is available.
According to the present invention, a fueling module is provided for supplying a gaseous fuel to a torch or other torch-like device at an elevated pressure from a relatively low pressure gaseous fuel source, such as a residential or commercial natural gas supply system, for example.
An exemplary fueling module according to the present invention preferably includes an inlet readily connectable in fluid communication with the source of the gaseous fuel, a compressor for compressing gaseous fuel from the gaseous fuel source in order to increase its pressure, and a fueling module discharge selectively and releasably connectable to the torch for selectively supplying the compressed gaseous fuel thereto, including an adjustable regulator device for preselectively adjusting the pressure of the compressed gaseous fuel supplied to the torch.
Preferably, the fueling module according to the present invention also includes a second, alternate fueling module discharge system for selectively bypassing the above-mentioned adjustable regulator device in order to discharge the compressed gaseous fuel directly from the compressor for purposes of recharging one or more gaseous fuel storage vessels, for example.
Various embodiments of the fueling module according to the present invention can include one or all of a variety of optional, but preferred, features, such as a filter for filtering the gaseous fuel between the fueling module inlet and the compressor intake, a lubricant filter for trapping and collecting compressor lubricants from the compressed gaseous fuel from the compressor discharge outlet, a return system for returning the compressor lubricants to the intake of the compressor, a cooling device for reducing the temperature of the compressed gaseous fuel from the compressor discharge outlet, or a selectively operable valve system for selectively discharging the compressed gaseous fuel either through the above-mentioned adjustable regulator device or substantially directly from the compressor.
Other optional, but preferred, features include an adjustable pressure cut-off device for pre-setting the maximum compressor discharge pressure and an adjustable relief valve system for pre-setting the pressure limit on the above-mentioned adjustable regulator device. Additional objects, advantages and features of the present invention will become apparent from the following description and appended claims, taken in conjunction with the accompanying drawings.
One skilled in the art will readily recognize from the following discussion and the accompanying drawings that the principles of the invention are equally applicable to torch apparatuses and fueling modules other than those shown for purposes of illustration in the drawings. It will also be readily apparent from the following discussion and the accompanying drawings that the present invention is adaptable to a wide variety of applications in addition to the torch supply and storage vessel supply applications shown for purposes of illustration in the drawings.
In FIG. The torch assembly 16 shown in FIG. The torch assembly 16 generally includes an oxygen valve 26 and a fuel valve 28 for variably adjusting the fuel-and-oxygen mixture in a mixing portion 30 in order to produce a flame at a torch tip 32 upon combustion of the air-and-fuel mixture.
Although not specifically shown in FIG. Like the torch assembly 16, the oxygen supply apparatus 18 is typical and representative of any of a wide variety of well-known oxygen supply devices commonly used in cutting, welding, or heating operations.
The oxygen supply apparatus 18 generally includes an oxygen tank 40, a shut-off valve 42, and an oxygen regulator device 44 for monitoring and adjusting the oxygen supply pressure and flow rate. As shown in FIGS. By such an arrangement, the fueling module 20 also has indirect utility in torch apparatus applications at remote locations where no electrical power source or gaseous fuel supply source is available, thereby allowing one or more of the storage vessels 64 to be recharged, transported, and used for gaseous fuel supply at such locations.
It should be noted, as is readily apparent to one skilled in the art, that the fueling module 20 can also be used for alternate gaseous fuel supply applications other than storage vessel recharging as shown for purposes of illustration in FIG. It should also be noted that the storage vessels 64 preferably contain a sorbent adsorbent or absorbent material in order to increase their gaseous fuel storage capacity.
Examples of such storage tanks are disclosed in the above-mentioned U. Patents incorporated by reference herein , and examples of the sorbent materials include activated carbon, zeolite materials, silica gel-type materials, or various clays.
The fueling module 20 generally includes a housing 66 equipped with one or more ventilation louvers 68, one or more carrying handles 70, and a control panel The control panel 72 includes a main power switch 74 for energizing and de-energizing the fueling module 20, and a selector switch 76 for preselecting either of the modes of operation shown in FIGS.
The control panel 72 also includes a power indicator light 78 for indicating to the user that the main power switch is in an "on" position, a torch indicator light 80 for indicating the selection of the torch application shown in FIG. A torch pressure regulator control 86 is also provided on the control panel 72 for allowing the user to selectively regulate the gaseous fuel supply pressure in the torch apparatus application shown in FIG. A torch pressure gauge or indicator 88 is provided on the control panel 72 for monitoring the gaseous fuel discharge pressure in the torch mode, and a similar tank pressure gauge or indicator 90 is provided for monitoring the gaseous fuel discharge pressure in the mode of operation for recharging storage vessels or other such purposes.
Referring primarily to FIGS. The housing 66 and the chassis 94 are preferably designed for providing suitable durability for the fueling module 20 consistent with its intended purposes. However, as is readily apparent to those skilled in the art, the various components and structural configurations of the fueling module 20 should be as light-weight and compact in size as is practicable in order to provide maximum transportability and thereby greatly add to the overall utility of the fueling module In this regard, one early prototype of the fueling module 20 was constructed with overall approximate dimensions of 14 inches It is envisioned, however, that the overall dimensions and weight of commercial versions of the fueling module 20 can be significantly reduced, without significantly affecting the durability, quality, and utility of the fueling module Referring primarily to the schematic flow diagram of FIG.
The ultimate source of gaseous fuel for the fueling module 20 is a gaseous fuel supply system, indicated diagrammatically at reference numeral in FIG. The gaseous fuel supply system can consist of virtually any readily-available source of gaseous fuel, but which most preferably consists of a typical natural gas supply system of the type commonly found in many residential or commercial installations.
The fueling module 20 includes a quick-connect connector for selectively and releasably connecting an inlet conduit in fluid communication with the supply system The inlet conduit preferably includes a solenoid-operated inlet valve , a filter , and a one-way check valve The filter can comprise any of a number of known filter apparatuses suitable for use with the particular gaseous fuel being supplied, but preferably includes a dessicant filter for removing moisture or other undesirable materials from the gaseous fuel.
Although various types of dessicant filters may be employed, one preferred dessicant filter employs a sorbent absorbent or adsorbent material, such as an activated carbon, a zeolite material, a silica gel-type material, or various clays, for example.
The gaseous fuel, which preferably consists of natural gas, is supplied through the inlet conduit , a tee fitting , and the other components described above to a compressor intake of a compressor device , which is selectively energizable for compressing the gaseous fuel in order to increase its pressure. In the actually-constructed prototype embodiment of the fueling module 20 described above, the compressor was a hermetically-sealed gas compressor of the type commonly employed in refrigeration apparatuses.
Such compressors are inexpensive, durable, and readily available as off-the-shelf items. One skilled in the art will readily recognize, of course, that other types of compressors may alternatively be used. Preferably, however, the compressor compresses the gaseous fuel to a pressure generally in the range of approximately psig kPa to approximately psig kPa , depending upon the preselected parameters discussed below and the demands of the particular application.
The compressed gaseous fuel is forcibly conveyed from a compressor discharge through a conduit to a compressor lubricant separator The lubricant separator can comprise any of a number of known separator or filter-type devices adapted to remove lubricating oils or liquids from a gas stream passing therethrough.
Preferably, the lubricant separator is of the well-known gravity, capillary tube type and is adapted to return the collected compressor lubricants to the compressor intake through a lubricant return conduit , under the motivating force of the compressor discharge gas pressure.
From the lubricant separator , the compressed gaseous fuel is preferably conveyed through a condenser or heat exchanger for reducing the temperature of the compressed gaseous fuel.
The heat exchanger preferably comprises a cooling coil, over which ambient air is forced by a cooling fan In the actually-constructed prototype embodiment of the refueling module 20 described above, the temperature of the gaseous fuel, which was natural gas, entering the heat exchanger was approximately F. Although the heat exchanger has been depicted in the drawings as comprising the air-to-gas cooling coil apparatus described above, one skilled in the art will readily recognize that other types of heat exchangers, condensers or other cooling apparatuses may alternately be employed to reduce the temperature of the compressed gaseous fuel from the compressor discharge of the compressor From the heat exchanger , the compressed and cooled gaseous fuel is conveyed through a conduit to a tee fitting , at which the compressed gaseous fuel can then be discharged from the fueling module 20 through either of two alternate fueling module discharge systems, as illustrated in FIGS.
In the first fueling module discharge system, the compressed gaseous fuel is conveyed from the tee fitting through a preferably solenoid-operated torch valve , a first discharge conduit , and a tee fitting to an adjustable regulator The adjustable regulator can comprise any of a number of commonly-available adjustable regulator devices operable for preselectively adjusting the pressure of a gas flowing therethrough.
The adjustable regulator is selectively operable by way of the above-mentioned pressure regulator control 86 on the control panel 72 in order to preselectively discharge gaseous fuel at a preselectively adjusted discharge pressure through the torch discharge fitting 50 by way of a one-way check valve The fueling module 20 also preferably includes an adjustable relief valve connected, by way of the tee fitting , in fluid communication with the inlet side of the adjustable regulator in order to allow the selected pre-setting of the pressure limit for the adjustable regulator device Because the compressor is typically a constant-speed, constant-output compressor, it discharges a substantially continuous and constant compressed gaseous fuel output whenever it is energized.
Thus, any excess output capacity of the compressor must be returned to the compressor intake by way of the relief valve and a gas return conduit , which is connected in fluid communication with the compressor intake by way of the tee fitting Because of the adjustable relief valve arrangement discussed above, the fueling module 20 can be selectively pre-set, by way of adjustment of the relief valve , for a maximum gaseous fuel discharge pressure through the above-described first fueling module discharge system that cannot be exceeded by operation of the adjustable regulator device The provision of the above features in the fueling module 20 thereby allows for an infinite preselected adjustment or variation of the fueling module discharge pressure for the torch mode of operation, with infinitely adjustable limits thereon, within the ranges of adjustability of the adjustable regulator device and the relief valve , and within the maximum discharge capabilities of the compressor In order to allow the fueling module user to monitor the pressure at which the gaseous fuel is supplied in the torch mode of operation, a tee fitting is provided on the outlet side of the adjustable regulator device in fluid communication, through a conduit , with the above-discussed torch pressure indicator For the optional alternate mode of operation of the fueling module 20, such as for the storage vessel recharging shown for purposes of illustration in FIG.
Compressed gaseous fuel in the second fueling module discharge system is conveyed directly from the tank valve , through a one-check valve , a second discharge conduit , and a tee fitting , to the above-discussed tank discharge fitting As is readily apparent in FIG. This is because the discharge pressure in tank recharging is desired to be held below a pre-set maximum level in order to avoid overpressuring the tanks.
In order to allow the operator to observe the pressure at which compressed gaseous fuel is discharged through the tank discharge fitting 60, thereby allowing the user to monitor the recharging operation for example, a conduit is connected in fluid communication with the above-mentioned tee fitting and with the above-mentioned tank pressure indicator 90 on the control panel In order to provide a pre-set maximum compressor discharge pressure, as well as providing for a fail safe feature in the event of a system malfunction, the fueling module 20 preferably also includes a tee fitting in the second discharge conduit , which provides fluid communication by way of a compressor control conduit to a pressure cut-off controller device The pressure cut-off device is preselectively and adjustably pre-settable for a maximum overall compressor discharge pressure and, as will be described in more detail below, is capable of de-energizing the compressor by way of a control conduit interconnecting the pressure cut-off and the drive motor not shown of the compressor The pressure cut-off device can be adjustably pre-set in order to provide upper limits on the gaseous fuel discharge pressure through either of the fueling module discharge systems, as well as providing automatic shut-off of the compressor in the event of down-stream conduit or hose ruptures, or various other malfunctions in which compressor de-energization is necessary or desirable.
It is preferred that once the pressure cut-off controller has de-energized the compressor 16, it can be reset to resume operations only by a manual resetting procedure in order to encourage the user to ascertain the cause of the compressor de-energization and correct any malfunctions prior to resuming operations. In order to provide for the various functions and features described above, the fueling module 20 includes a power and control system, shown diagrammatically in FIG.
The fueling module 20 is preferably electrically powered and is releasably connectable with a conventional external electrical power source by way of a conventional electrical connector Electrical energy is conveyed by way of an electrical supply line to the above-described main power switch 74, which is selectively operable to either an "on" position or an "off" position. When the main power switch 74 is in its "on" position, electrical energy is conducted by way of an electrical feed line and a power indicator feed line to the above-described power indicator light 78 on the control panel 72, thereby providing indication to the operator that the fueling module 20 is energized.
Electrical power is also supplied through the main power switch 74, the electrical feed line , and a selector switch feed line to the above-mentioned selector switch 76 for purposes that will be described in more detail below. The main power switch 74 is also the vehicle for supplying electrical power by way of other electrical feed lines and and a compressor feed line to the motor drive not shown for the compressor , thereby allowing the compressor to be selectively energized and de-energized through the main power switch The electrical feed line also branches off into an inlet solenoid feed line in order to energize an inlet solenoid operator for purposes of opening the inlet valve when the system is energized, or for closing the inlet valve when the system is de-energized.
A fan motor feed line is also provided for supplying electrical power from the main power switch 74 to the fan motor of the heat exchanger fan Thus, the compressor , the fan motor and the fan , and the solenoid-operated inlet valve are all energized and de-energized, along with the selector switch 76 and the power indicator light 78, by way of operation of the main power switch Once the fueling module 20 has been energized so that the selector switch 76 is energized, the selector switch 76 can be selectively operated to the so-called "torch" position in order to energize the first solenoid operator on the torch valve , by way of a first electrical control line Similarly, if the selector switch 76 is moved to the so-called "tank" position, a second solenoid operator is energized by way of a second electrical control line for purposes of opening the above-mentioned solenoid-operated tank valve Therefore, when the selector switch 76 is moved to the so-called "torch" position, the solenoid operator is energized to open the torch valve , and substantially simultaneously, the solenoid operator is de-energized so as to close the tank valve Conversely, when the selector switch is moved to the so-called "tank" position, the solenoid operator is energized to open the tank valve , and substantially simultaneously, the solenoid operator is de-energized to close the torch valve By such an arrangement, the fueling module 20 can be employed for discharging compressed gaseous fuel, preferably natural gas, either through the first fueling module discharge system for purposes of tank operation, or through the second fueling module discharge system for purposes of storage vessel recharging or other such applications.
In order to provide the user with an indication of whether the "torch" or "tank" mode has been selected, an electrical torch indicator feed line is electrically interconnected to provide power from the first electrical control line to the torch indicator light
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Boiler Accessories Companies in India
The invention relates generally to various torch or torch-like apparatus for cutting, welding, or heating operations involving either metallic or non-metallic materials. More specifically, the invention relates to a fueling apparatus for supplying fuel to such torch or torch-like apparatuses. As used herein, the general term "welding", includes welding, brazing, or other known operations by which separate items or pieces of material are joined or fused to one another with the use of flame-producing torch or burner. Cross-reference is hereby made to U.
This will help you to avoid unnecessary questions or fines when considering claims from consumers or during supervisory bodies inspection. Products that have passed the registration procedure receive a CU TR certificate or declaration of conformity, they also have to be marked with the EAC compliance sign and after that they can be sold on the territory of the Customs Union. Scheme 5d is used for machines or equipment: — used at hazardous production facilities, — if it is not possible to perform tests in full before installing devices on site, — when products are innovative. Safety Rationale is a document containing a risk analysis, as well as information from design, operational, technological documentation on the minimum necessary safety measures, which is accompanying machines and or equipment at all stages of their life cycle and is supplemented with information on the results of risk assessment at the operational stage after major repairs of machines or equipment. For foreign manufacturers, it is also necessary to indicate information about the representative company on the territory of the Customs union Authorized company. Components and spare parts used for repair and maintenance are not subject to mandatory confirmation of compliance according to CU TR No. Provided that the machines or equipment for which they are intended have passed the procedure of mandatory certification or declaration. Applicant in a certificate of conformity can be either a manufacturer of product, or its official representative company on the territory of the Customs Union.
Proceedings 10 Cryo
Close menu. It is shown that as a result of research, methods have been developed and refined for calculating pressure fluctuations and pipeline and apparatus vibrations and means for damping them; dynamics and strength of plates in self-acting valves; strength and dynamic stability of crankshafts of multibank compressors; economical and reliable control systems; operating processes in cylinders, packings and valves for compressors without lubrication. Show all volumes and issues. Tables of content are generated automatically and are based on records of articles contained that are available in the TIB-Portal index. Due to missing records of articles, the volume display may be incomplete, even though the whole journal is available at TIB. Services for libraries National interlibrary loan International interlibrary loan. Browse subjects Browse through journals Browse through conferences Browse through e-books. Electronic books The e-book database EBC. Help for access and use Terms of access and use Access off campus. Reading desks and facilities Computer workstations Printing — photocopying — scanning Wireless LAN Interactive whiteboards Study cubicles Workstation for the blind and visually impaired.
US4776366A - Gaseous fueled torch apparatus and fueling module therefor - Google Patents
Skip to main content Skip to table of contents. Advertisement Hide. Linde History of a Technology Corporation, — Front Matter Pages i-xiv. Linde as a Producer of Refrigeration Equipment.
Companies to Target
This service is produced by Kompass. Why this number? All the lines are busy at the moment, please try again in a moment. Manufacturer and Exporter of Boilers and Accessories. Manufacturers, Suppliers, Traders and Exporters of Industrial heating elements, heaters, and thermocouples which includes Tubular It Includes Heat Manufacturers of Steel Structurals for the Power industry and Components for the thermal power industry like ductings, boiler Associated Companies: Spirax Marshall Ltd. Our company Manufacturer of Drugs, I.
Cryogenics Application Ppt
Taking into account the structure of import and export of Russia and EAEU countries, machinery and equipment is the most exported group of products to the market of these countries. Depending on the type, the equipment may fall under the requirements for mandatory EAC certification or mandatory EAC declaration.
Cryogenic Engineering: Fifty Years of Progress
Download: Decree No. Follow us. Ukraine Certification and products compliance. Archive Former national certification systems.
US20050269313A1 - Temperature limited heaters with high power factors - Google Patents
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronics, mechanical, photocopying, recording or otherwise, without the prior permission of the authors. Published by Icaris Ltd.
CU TR 010/2011 "Safety of machinery" - certification and declaration of conformity
Но, разумеется, и самый волшебный инструмент не был в состоянии помочь в поисках цели, неясной самому творцу. Бросив свои труды, Элвин мрачно уставился на прямоугольник, который он старался заполнить прекрасными образами. Тот был на три четверти пуст.