CN216480270U - Laboratory hydrogen gas centralized gas supply system - Google Patents
Laboratory hydrogen gas centralized gas supply system Download PDFInfo
- Publication number
- CN216480270U CN216480270U CN202122947936.3U CN202122947936U CN216480270U CN 216480270 U CN216480270 U CN 216480270U CN 202122947936 U CN202122947936 U CN 202122947936U CN 216480270 U CN216480270 U CN 216480270U
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- gas supply
- laboratory
- centralized
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a laboratory hydrogen centralized gas supply system which comprises a hydrogen generator centralized gas supply unit, a hydrogen purification unit, a hydrogen steel cylinder gas supply unit and a laboratory gas path system unit, wherein the hydrogen generator centralized gas supply unit is formed by connecting a plurality of hydrogen generators in parallel through a gas collecting ring for centralized gas supply, the output end of the gas collecting ring is connected to an output switch valve through a high-pressure hose, the hydrogen purification unit comprises a manual eight-way valve, two identical hydrogen purification pipes, a replacement vent pipeline and an output pipeline, the two ends of each hydrogen purification pipe and the replacement vent pipeline are respectively connected with two paths of the manual eight-way valve, the output switch valve and the output pipeline are respectively connected with one path of the manual eight-way valve, and the hydrogen steel cylinder gas supply unit and the laboratory gas path system unit are respectively communicated with the output pipeline through a three-way valve. The utility model designs a laboratory hydrogen centralized gas supply system to meet the requirement of continuous and stable high-purity hydrogen supply in a laboratory or a plurality of laboratory instruments needing centralized gas supply to a plurality of dispersed rooms.
Description
Technical Field
The utility model relates to the field of gas supply systems, in particular to a laboratory hydrogen centralized gas supply system.
Background
At present, many enterprises, research institutions or detection units need to use a large number of gas chromatography instruments and some instruments which need to use gas for working, and when the number of gas instruments is large, centralized gas supply is more advantageous, and the gas instruments gradually become the current mainstream gas supply mode. In a domestic patent CN203068139 laboratory high-purity gas path system device, CN205896694U is applied to a laboratory uninterrupted stable hydrogen gas centralized gas supply device, and a CN210934391U centralized gas supply system for laboratory common gas has disclosed a laboratory common gas centralized gas supply implementation scheme, and most of the gas centralized gas supply implementation schemes are widely popularized and applied.
At present, the most common air, nitrogen and hydrogen sources in a laboratory are provided with a gas source generator commodity with mature technology, and can replace commodity gas packaged by a high-pressure steel cylinder to a certain extent, and the problems of purchase, transportation, replacement and safety management caused by daily consumption of the high-pressure steel cylinder are partially solved. The electrolytic water type hydrogen generator is the most mature commodity hydrogen source in the prior art, most of the output flow of the electrolytic water type hydrogen generator is about 0.2-1L/min, and the generator product with larger flow in the market is large in volume and general in long-term continuous working reliability due to the fact that multiple electrolytic cells are connected in parallel, and is not popularized and applied on a large scale in a laboratory. Although the purity of the supplied gas by adopting the hydrogen generator is slightly lower than that of a high-purity hydrogen cylinder, the hydrogen generated by the hydrogen generator of an instrument with a low requirement on purity can be completely replaced by further purification. Compared with the common gas supply of a hydrogen cylinder with the volume of 40L and the filling pressure of 13MPa, the gas supply device has larger one-time investment, and the cost consumption and the labor consumption are much lower when the gas supply device is operated for a long time.
Most laboratories are only simply distributed with hydrogen generators beside gas utilization instruments, and independently operate to supply gas to 1-2 nearby instruments. Thus, the test bed is not convenient to place and is not beautiful enough when independently and dispersedly operated. In some laboratories, several hydrogen generators are concentrated on a test bed or a floor, and outlets are simply connected in parallel to directly supply gas to a plurality of instruments on the test bed simultaneously. Although the simplest centralized gas supply is adopted, the generators still operate independently, water is added dispersedly and maintenance and repair are still performed, and the safety and long-term operation reliability are still not ideal.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model designs a laboratory hydrogen centralized gas supply system to meet the requirement of continuous and stable high-purity hydrogen supply in a laboratory or a plurality of laboratory instruments needing centralized gas supply to a plurality of dispersed rooms.
The utility model adopts the following technical scheme:
the utility model provides a laboratory hydrogen gas centralized gas supply system, including hydrogen generator centralized gas supply unit, the hydrogen purification unit, hydrogen steel bottle gas supply unit and laboratory gas circuit system unit, hydrogen generator centralized gas supply unit is connected in parallel by a plurality of hydrogen generators through the gas collecting ring and is concentrated the air feed, the gas collecting ring output is connected to the output switch valve through high-pressure hose, the hydrogen purification unit includes manual eight logical valve, two the same hydrogen purification pipes, replacement unloading pipeline and output pipeline, two the way of manual eight logical valve is connected respectively to two hydrogen purification pipe both ends and replacement unloading pipeline, output switch valve and output pipeline connect one way of manual eight logical valve respectively, hydrogen steel bottle gas supply unit and laboratory gas circuit system unit communicate the output pipeline through the three-way valve respectively.
Preferably, the hydrogen cylinder gas supply unit consists of a high-pressure hydrogen cylinder, a cylinder fixing frame and a hydrogen pressure reducing valve, and the high-pressure hydrogen cylinder is connected with the three-way valve through the hydrogen pressure reducing valve.
Preferably, a displacement emptying switch valve and a flame arrester are connected to the displacement emptying pipeline, and an output port of the displacement emptying pipeline is connected to the outside.
Preferably, the hydrogen generators are placed in a stainless steel frame, and a hydrogen generator switch valve is connected between each hydrogen generator and the gas collection ring.
Preferably, the laboratory gas path system unit comprises a hydrogen low-pressure main pipe and a plurality of sections of branch pipes connected in parallel and communicated with the hydrogen low-pressure main pipe, each section of branch pipe is communicated with a pressure gauge and a terminal switch valve, and the hydrogen low-pressure main pipe is communicated with a three-way valve.
Preferably, the bottom of the stainless steel frame is provided with casters.
Preferably, the output pipeline is communicated with a one-way valve.
The utility model has the beneficial effects that: the utility model provides a continuous and centralized hydrogen supply system for a laboratory, which aims to solve the problems of safety, reliability and convenience in operation of high-efficiency parallel connection of the existing hydrogen generators and combined centralized gas supply of hydrogen steel cylinders, reduce the consumption cost of purchased gas sources, reduce the operation intensity of laboratory personnel and facilitate maintenance and daily maintenance.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
in the figure: 1. 1# hydrogen generator; 2. 1# hydrogen generator on-off valve; 3. 2# hydrogen generator; 4. 2# hydrogen generator on-off valve; 5. 3# hydrogen generator on-off valve; 6. 3# hydrogen generator on-off valve; 7. 4# hydrogen generator on-off valve; 8. 4# hydrogen generator on-off valve; 9. 5# hydrogen generator on-off valve; 10. 5# hydrogen generator on-off valve; 11. the No. 6 hydrogen generator switch valve; 12. the No. 6 hydrogen generator switch valve; 13. a hydrogen generator square tube frame; 14. a caster wheel; 15. a gas collecting ring; 16. a pressure gauge with an alarm; 17. a high pressure hose; 18. an output switching valve; 19. replacing the blow valve; 20. a flame arrestor; 21. a manual eight-way valve; 22a, hydrogen purification pipes a, 22b, and a hydrogen purification pipe b; 23. a one-way valve; 24. a three-way valve; 25. a hydrogen low pressure manifold; 26. a hydrogen pressure reducer; 27. hydrogen steel cylinder and its fixing frame; 28. 1# branch pipe in the user room; 29. a 1# point pipeline pressure gauge for indoor gas utilization of a user; 30. a 1# point position switch valve for indoor air utilization of a user; 31. a 2# branch pipe in the user room; 32. a 2# point pipeline pressure gauge for indoor gas utilization of a user; 33. a 2# point position switch valve for indoor gas utilization of a user; 34. a 3# branch pipe in the user room; 35. a 3# point pipeline pressure gauge for indoor gas utilization of a user; 36. indoor air utilization 3# point position switch valve of user.
Detailed Description
The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:
example (b): as shown in fig. 1, 6 hydrogen generators (1 # hydrogen generator 1, 2 # hydrogen generator 3, 3# hydrogen generator 5, 4# hydrogen generator 7, 5# hydrogen generator 9, 6# hydrogen generator 11) are placed in a square tube frame 13 of the hydrogen generator formed by welding square tubes, and the square tube frame of the hydrogen generator is provided with casters 14, so that the hydrogen generator is convenient for a user to move and overhaul in a small range. Each hydrogen generator output interface is matched with a section of pipeline and is respectively connected with corresponding hydrogen generator switch valves (a 1# hydrogen generator switch valve 2, a 2# hydrogen generator switch valve 4, a 3# hydrogen generator switch valve 6, a 4# hydrogen generator switch valve 8, a 5# hydrogen generator switch valve 10 and a 6# hydrogen generator switch valve 12) so as to ensure that a single hydrogen generator can move in a small range. And welding a section of annular closed pipeline with a larger diameter as a gas collecting ring. A section of branch interface tube is welded at the position of each generator switch valve on the gas collecting ring, a section of branch interface tube is welded at the middle position of the gas collecting ring to serve as an output end, the output end of the gas collecting ring is connected with a three-way joint, one end of the gas collecting ring is connected with a pressure gauge 16 with an alarm, and the other end of the gas collecting ring is connected with a section of high-pressure hose 17 with proper length, so that the centralized gas supply unit can move within a certain range when the gas collecting ring is maintained conveniently. The above whole body forms a centralized gas supply unit of the hydrogen generator. The high-pressure hose 17 is connected with an output switch valve 18 and then connected to a hydrogen purification unit fixed on the indoor wall surface.
The hydrogen purification unit consists of a manual eight-way valve 21, two identical hydrogen purification pipes (a hydrogen purification pipe 22a and a hydrogen purification pipe 22 b), a replacement emptying switch valve 19 and a flame arrester 20, wherein an outlet pipeline of the flame arrester is connected to the outside. The hydrogen purification unit is connected with a three-way valve 24 on a hydrogen main pipe in the laboratory through a one-way valve 23.
After the centralized gas supply unit of the hydrogen generator is initially put into use or daily maintenance, after the single hydrogen generators are started one by one, the pressure of each hydrogen generator reaches a set value, the switch valve at the rear part of each hydrogen generator is started one by one, and finally the output switch valve 18 is started. At this time, the three-way valve 24 on the hydrogen manifold is switched to temporarily supply gas from the standby hydrogen cylinder. The manual eight-way valve 21 is in the position state shown in the figure, after the output pressure of the hydrogen generator is stable, the manual eight-way valve is manually switched to another state, then the replacement vent valve 19 is opened, hydrogen in the pipeline is exhausted to the outside through the flame arrester 20 on the pipeline, then the manual eight-way valve is manually switched to return to the original state, the replacement vent valve 19 is also opened, and the hydrogen in the pipeline is exhausted to the outside through the flame arrester 20 on the pipeline. And repeating the steps for 1-2 times to complete replacement of the centralized gas supply unit and the hydrogen purification unit of the hydrogen generator. And finally, the three-way valve 24 on the hydrogen main pipe is switched to the gas supply state of the centralized gas supply unit of the hydrogen generator. And (3) opening a pressure gauge 16 with an alarm and connected with the outlet of the gas collecting ring to monitor the gas supply pressure of the centralized gas supply unit of the hydrogen generator, and performing an audible and visual alarm when one or more hydrogen generators fail to output the hydrogen output pressure in the gas collecting ring to a set value.
When the hydrogen purification unit needs to be maintained independently and a certain path of the hydrogen purification pipe 22a and the hydrogen purification pipe 22b is used for a period of time, the manual eight-way valve 21 can be manually switched to another state, the currently working purification pipe can be cut off, another purification pipe for standby use is put into use, the replacement emptying valve 19 is also opened, replacement hydrogen in the pipeline is emptied outdoors through the flame arrester 20 on the pipeline, no pressure exists in the cut hydrogen purification pipe at the moment, the cut hydrogen purification pipe is disconnected with the system, and the hydrogen purification pipe can be safely detached to be regenerated and maintained.
A spare gas supply path of the hydrogen steel cylinder is arranged between the outdoor steel cylinders and consists of a high-pressure hydrogen steel cylinder 27, a steel cylinder fixing frame and a hydrogen pressure reducing valve 26. The hydrogen pressure reducing valve 26 is pre-adjusted to match the hydrogen generator output pressure as much as possible and is connected to the three-way valve 24 on the indoor hydrogen manifold.
The air circuit system in the laboratory is the same as the air circuit system for centralized gas supply in the common laboratory, and the figure only shows that three branch pipes (the indoor 1# branch pipe 28 of the user, the indoor 2# branch pipe 31 of the user, the indoor 3# branch pipe 34 of the user) connected to the indoor hydrogen low-pressure main pipe 25 form three air terminal systems for the user by using a gas point pressure gauge (the indoor 1# point pipeline pressure gauge 29 of the user, the indoor 2# point pipeline pressure gauge 32 of the user, the indoor 3# point pipeline pressure of the user, 35) and three air terminal switch valves for the user (the indoor 1# point switch valve 30 of the user, the indoor 2# point switch valve 33 of the user, the indoor 3# point switch valve 36 of the user).
The hydrogen generator can directly use the mature products on the market. The flow rate of daily continuous output is generally 50-70% of the nominal maximum output flow rate of the hydrogen generator and is slightly larger than the normal continuous average consumption flow rate of the instrument. And the safety and reliability can be further improved, and secondary development can be carried out. For example, a communication interface is added to carry out interconnection communication on each hydrogen generator, one is set as a host, the rest are set as slave machines, 1-2 slave machines are kept to be set in a standby state, and gas production is not output. After the centralized gas supply unit of the hydrogen generator is put into use, one or more units are accidentally out of order, the hydrogen cannot be continuously and normally output, the electromagnetic valve in the hydrogen generator is immediately closed to output, the hydrogen generator stops working, the panel gives an audible and visual alarm, and the standby hydrogen generator is started.
The number of the hydrogen generators arranged in a single set is not excessive, so that the maintainability is not reduced. When one set of hydrogen generator centralized gas supply unit cannot provide enough hydrogen flow, or the laboratory has a large scale and the length of a gas transmission pipeline is long, two or even more sets of hydrogen generator centralized gas supply units can be considered, and two or more sets of hydrogen purification units are correspondingly matched to simultaneously supply gas to two ends of a laboratory hydrogen main pipe. Therefore, two or more sets of hydrogen generator centralized gas supply units and hydrogen purification units can be maintained independently, the failure probability is lower, and the long-term reliability of centralized gas supply is improved.
In daily work, once any one set of the hydrogen generator centralized gas supply unit needs daily maintenance or fails and the other set or sets of the hydrogen generator centralized gas supply unit cannot provide enough hydrogen flow, the failed hydrogen generator centralized gas supply unit can be immediately turned off, a spare hydrogen steel cylinder gas source is started for auxiliary gas supply, and the hydrogen steel cylinder gas supply unit can be continuously used after being repaired, so that the consumption of the hydrogen steel cylinder is greatly reduced.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.
Claims (7)
1. The utility model provides a laboratory hydrogen gas centralized gas supply system, characterized by, it includes hydrogen generator centralized gas supply unit, hydrogen purification unit, hydrogen steel bottle gas supply unit and laboratory gas circuit system unit, hydrogen generator centralized gas supply unit is connected in parallel through the gas collecting ring by a plurality of hydrogen generators and is concentrated the gas supply, the gas collecting ring output is connected to the output switch valve through high-pressure hose, hydrogen purification unit includes manual eight-way valve, two the same hydrogen purifying pipes, replacement air-release pipeline and output pipeline, two the two tunnel of manual eight-way valve are connected respectively to two hydrogen purifying pipe both ends and replacement air-release pipeline, output switch valve and output pipeline connect one way of manual eight-way valve respectively, hydrogen steel bottle gas supply unit and laboratory gas circuit system unit communicate the output pipeline through the three-way valve respectively.
2. The laboratory hydrogen centralized gas supply system according to claim 1, wherein the hydrogen cylinder gas supply unit is composed of a high-pressure hydrogen cylinder, a cylinder holder, and a hydrogen pressure reducing valve, and the high-pressure hydrogen cylinder is connected to the three-way valve through the hydrogen pressure reducing valve.
3. The laboratory hydrogen centralized gas supply system according to claim 1, wherein a displacement vent switch valve and a flame arrester are connected to the displacement vent pipeline, and an output port of the displacement vent pipeline is connected to the outside.
4. The laboratory hydrogen centralized gas supply system according to claim 1, wherein the plurality of hydrogen generators are placed in a stainless steel frame, and a hydrogen generator switch valve is connected between each hydrogen generator and the gas collecting ring.
5. The laboratory hydrogen centralized supply system as claimed in claim 1, wherein the laboratory gas path system unit comprises a hydrogen low pressure main pipe and a plurality of parallel branch pipes communicated with the hydrogen low pressure main pipe, each branch pipe is communicated with a pressure gauge and a terminal switch valve, and the hydrogen low pressure main pipe is communicated with a three-way valve.
6. The laboratory hydrogen centralized gas supply system according to claim 4, wherein the bottom of the stainless steel frame is provided with casters.
7. The laboratory hydrogen centralized gas supply system according to claim 1, wherein the output pipeline is communicated with a one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122947936.3U CN216480270U (en) | 2021-11-29 | 2021-11-29 | Laboratory hydrogen gas centralized gas supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122947936.3U CN216480270U (en) | 2021-11-29 | 2021-11-29 | Laboratory hydrogen gas centralized gas supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216480270U true CN216480270U (en) | 2022-05-10 |
Family
ID=81400961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122947936.3U Active CN216480270U (en) | 2021-11-29 | 2021-11-29 | Laboratory hydrogen gas centralized gas supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216480270U (en) |
-
2021
- 2021-11-29 CN CN202122947936.3U patent/CN216480270U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201173384Y (en) | Mobile type compressed natural gas pressure regulating gas supply device | |
| CN110671608B (en) | Instrument air source system | |
| CN201439864U (en) | Double source air supply system | |
| CN212080875U (en) | Medical gas bus bar device with residual prediction function | |
| CN206478448U (en) | A kind of hydrogen supply system | |
| CN216480270U (en) | Laboratory hydrogen gas centralized gas supply system | |
| CN210860665U (en) | Instrument wind source system | |
| CN213465799U (en) | Medical gas pipeline operation monitoring and control system | |
| CN102591314A (en) | Centralized oxygen supply system and control method | |
| CN214500904U (en) | Automatic switching gas bus bar | |
| CN208650147U (en) | A kind of band water storage function multiple-tank body steady flow compensation supply equipment | |
| CN204873827U (en) | Oxygenerator of removable molecule tower and seperating vale | |
| CN215891958U (en) | Automatic filling device for bottled pure gas and mixed gas | |
| CN217559558U (en) | Skid-mounted liquid hydrogen storage high-pressure hydrogenation station | |
| CN109458553B (en) | Emergency air supply system of high-purity ammonia tank car | |
| CN103982223B (en) | Compressed-air supply system | |
| CN216411170U (en) | Carrier gas expanding device and oil chromatography on-line monitoring system | |
| CN219756028U (en) | Multi-insurance medical liquid oxygen station | |
| CN110440035B (en) | Regional valve box of medical gas | |
| CN203879539U (en) | Oxygen supplying device for coal mine refuge chamber | |
| CN109667314B (en) | Modularized combined secondary pressurizing water supply equipment and application method thereof | |
| CN201293205Y (en) | Automatic switchover busbar apparatus | |
| CN220870614U (en) | One inlet and one outlet gas bus bar | |
| CN220213631U (en) | Intelligent oxygen supply system of multi-type intermodal shelter | |
| CN210150717U (en) | Oxygen supply control system of PSA oxygen generator in medical center |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |