CN212202434U - Compressor protection pipeline system - Google Patents
Compressor protection pipeline system Download PDFInfo
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- CN212202434U CN212202434U CN202020747611.3U CN202020747611U CN212202434U CN 212202434 U CN212202434 U CN 212202434U CN 202020747611 U CN202020747611 U CN 202020747611U CN 212202434 U CN212202434 U CN 212202434U
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Abstract
The utility model discloses a compressor protection pipeline system, which comprises an inert gas source, a compressor inert gas inlet pipe and a diffusion pipe; the inert gas source is connected with the compressor through the compressor inert gas inlet pipe; an inert gas source cut-off valve is arranged on the inert gas inlet pipe of the compressor, the gas inlet end of the diffusing pipe is connected with the inert gas inlet pipe of the compressor, and the connecting node of the gas inlet end of the diffusing pipe and the inert gas inlet pipe of the compressor is positioned between the inert gas source cut-off valve and the compressor; the diffusing pipe is provided with a diffusing pipe check valve. This protection pipe-line system can discharge the hydrogen that the compressor was revealed, can also be before the compressor starts, and the air in the diffusion pipeline that will discharge hydrogen is through inert gas replacement evacuation to avoid the hydrogen of revealing to mix with the air in the discharge process and produce the explosion.
Description
Technical Field
The utility model relates to a hydrogenation compressor field refers in particular to a compressor protection pipe-line system.
Background
No matter the 35MPa hydrogen station or the 70MPa hydrogen station, the hydrogen storage tank for the station is adopted as a main hydrogen source in the hydrogen fuel cell automobile hydrogenation process at present, and only the working pressure of the hydrogen storage tank for the station is different. In order to store low-pressure hydrogen in a long-tube trailer conveyed outside a hydrogenation station into a hydrogen storage tank for the station, a compressor is required, and the hydrogen in the long-tube trailer is stored in the hydrogen storage tank for the station after being pressurized. One compressor that mainstream used at present is hydraulic piston compressor, and the compressor adopts hydraulic oil as power, compresses hydrogen to high pressure from low pressure, but in compression process, has a small amount of hydrogen to leak out from the compressor. If the leaked hydrogen is discharged in a concentrated manner without passing through the diffusion pipe, an explosion environment is formed in the area where the compressor is located, and the safety of the whole device and personnel is affected. And before the hydraulic compressor is restarted after stopping for a long time, the release pipeline for discharging the hydrogen contains a large amount of air, so that when the leaked hydrogen is mixed with the air when the compressor is restarted, an explosive mixture is easily formed, and safety risk exists.
Disclosure of Invention
The utility model aims to provide a: to the problems, a protection pipeline system of the compressor is provided, the protection pipeline system can discharge hydrogen leaked by the compressor, air in a diffusion pipeline for discharging the hydrogen can be replaced and exhausted before the compressor is started, and explosion of the leaked hydrogen at the compressor and in the discharging process is avoided.
The utility model adopts the technical scheme as follows:
a compressor protection pipeline system comprises an inert gas source, a compressor inert gas inlet pipe and a diffusion pipe; the inert gas source is connected with the compressor through the compressor inert gas inlet pipe; an inert gas source cut-off valve is arranged on the compressor inert gas inlet pipe, the gas inlet end of the diffusing pipe is connected with the compressor inert gas inlet pipe, and the connecting node of the gas inlet end of the diffusing pipe and the compressor inert gas inlet pipe is positioned between the inert gas source cut-off valve and the compressor; the diffusing pipe is provided with a diffusing pipe check valve.
Due to the structure, before the compressor is started, the inert gas source cut-off valve is opened for a period of time, so that the inert gas from the inert gas source enters the inert gas inlet pipe and the diffusing pipe of the compressor after being decompressed, and the air in the inert gas inlet pipe and the diffusing pipe of the compressor is replaced and discharged from the outlet of the diffusing pipe, so that the inert gas inlet pipe and the diffusing pipe of the whole compressor are filled with the inert gas; and after the compressor is started, a small amount of leaked hydrogen enters the inert gas inlet pipe of the compressor from the tail end of the inert gas inlet pipe of the compressor and then enters the diffusing pipe to be discharged. In the process, the inert gas is discharged by replacing the air in the compressor inert gas inlet pipe and the diffusing pipe, so that the explosive mixture generated by mixing the leaked hydrogen with the air in the compressor inert gas inlet pipe and the diffusing pipe can be avoided. The leaked hydrogen can be discharged from the diffusion pipe, so that an explosion environment in the area where the compressor is located is avoided; the diffusion pipe check valve can avoid air backflow to enter the diffusion pipe, further explosion is avoided, and meanwhile the nitrogen and hydrogen environment at the upstream can be maintained for a long time.
Furthermore, a flow switch is arranged on the diffusing pipe and is positioned at the upstream end of the check valve of the diffusing pipe.
Due to the structure, when the flow switch detects that the flow in the diffusing pipe is overlarge, the hydrogen leakage exceeds the standard, the leaked hydrogen quantity of the compressor is overlarge, and the flow switch and the compressor are connected and controlled by the controller, and the flow switch sends an alarm signal to the controller to enable the controller to control the compressor to stop.
Furthermore, a pressure relief pipe is connected in parallel with the check valve of the relief pipe and the flow switch, and a safety valve is arranged on the pressure relief pipe; the air inlet end of the pressure relief pipe is connected with the diffusing pipe, and the connection node of the pressure relief pipe is positioned at the upstream end of the flow switch; the air outlet end of the pressure relief pipe is connected with the diffusing pipe, and the connecting node of the pressure relief pipe is located at the downstream end of the check valve of the diffusing pipe.
Due to the structure, when the pressure in the diffusing pipe is higher, hydrogen can enter the pressure relief pipe and is discharged from the safety valve, and the pressure in the diffusing pipe is reduced to ensure safety.
Furthermore, the compressor inert gas intake pipe is provided with the relief pressure valve, the relief pressure valve is located the low reaches end of inert gas source trip valve, is located the inlet end of diffusing the pipe and the upstream end of the connected node of compressor inert gas intake pipe.
Because the existence of relief pressure valve can make the gas that the inert gas source came out reduce, guarantees follow-up pipeline equipment's safety, and simultaneously, the relief pressure valve makes the gas pressure of inertization pipeline reduce, also can avoid detecting the pressure among the follow-up pipe-line system too high, think hydrogen reveals seriously, and carries out the wrong report.
Furthermore, a filter is arranged on the compressor inert gas inlet pipe, the filter is located at the downstream end of the pressure reducing valve and at the upstream end of the connection node of the inlet end of the diffusing pipe and the compressor inert gas inlet pipe.
Due to the structure, the filter can filter out particle impurities in the inert gas source, and the safety of subsequent pipeline equipment is ensured.
Furthermore, the pressure value of the forward conduction of the check valve is less than or equal to 0.1 MPa.
Because above-mentioned structure, the check valve sets up certain forward conducting pressure, can make and keep certain malleation in compressor inert gas intake pipe and the diffusion pipe to guarantee that inert gas can be full of compressor inert gas intake pipe and diffusion pipe, avoid the diffusion pipe export not to obstruct and make the direct evacuation of inert gas, so that inert gas can not be full of whole intake pipe and diffusion pipe.
Furthermore, the pressure value of the upstream end of the pressure reducing valve is 10-40 times that of the downstream end, the pressure value of the downstream end of the pressure reducing valve is less than or equal to 0.1MPa, the pressure value of the downstream end of the pressure reducing valve is smaller than the alarm value and the interlocking value of the pressure transmitter, and the pressure transmitter is prevented from triggering alarm and interlocking.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the compressor protection pipeline system can perform inerting treatment on a pipeline which is possibly contacted with hydrogen by using nitrogen before the hydraulic compressor is started, so that an explosive mixture is prevented from being formed when the compressor is started, and meanwhile, leaked hydrogen can be discharged in the running process of the hydraulic compressor, so that the safety of devices and personnel in a state that the hydraulic compressor is possibly leaked with hydrogen is ensured.
Drawings
Fig. 1 is a structural view of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model discloses a compressor 6 protection pipeline system, which comprises an inert gas source 1, a compressor inert gas inlet pipe 3 and a diffusion pipe 7; the inert gas source 1 is connected with a compressor 6 through a compressor inert gas inlet pipe 3; an inert gas source cut-off valve 2 is arranged on the compressor inert gas inlet pipe 3, the gas inlet end of the diffusing pipe 7 is connected with the compressor inert gas inlet pipe 3, and the connecting node of the gas inlet end of the diffusing pipe 7 and the compressor inert gas inlet pipe 3 is positioned between the inert gas source cut-off valve 2 and the compressor 6; the blow-off pipe 7 is provided with a blow-off pipe check valve 9. In this embodiment, the inert gas source 1 is a nitrogen gas source, and the compressor 6 is a hydraulic compressor 6.
The diffusion pipe 7 is provided with a flow switch 8, and the flow switch 8 is positioned at the upstream end of a check valve 9 of the diffusion pipe.
A pressure relief pipe 10 is connected in parallel at the positions of the check valve 9 and the flow switch 8 of the relief pipe, and a safety valve 11 is arranged on the pressure relief pipe 10; the air inlet end of the pressure relief pipe 10 is connected with the diffusing pipe 7, and the connection node of the pressure relief pipe is positioned at the upstream end of the flow switch 8; the air outlet end of the pressure relief pipe 10 is connected with the diffusing pipe 7, and the connecting node of the pressure relief pipe is positioned at the downstream end of the check valve 9 of the diffusing pipe.
The compressor inert gas inlet pipe 3 is provided with a pressure reducing valve 5, the pressure reducing valve 5 is positioned at the downstream end of the inert gas source cut-off valve 2 and at the upstream end of the connecting node of the inlet end of the diffusing pipe 7 and the compressor inert gas inlet pipe 3.
The compressor inert gas inlet pipe 3 is provided with a filter 5, the filter 5 is positioned at the downstream end of the pressure reducing valve 4 and at the upstream end of the connection node of the inlet end of the diffusing pipe 7 and the compressor inert gas inlet pipe 3.
The pressure value of the forward conduction of the check valve is less than or equal to 0.1 MPa.
The pressure value of the upstream end of the pressure reducing valve 4 is 10-40 times that of the downstream end, and the pressure value of the downstream end of the pressure reducing valve 4 is less than or equal to 0.1 MPa.
The utility model discloses a concrete operation process as follows:
as shown in fig. 1, the compressor inlet pipe 3 and the blow-off pipe 7 are filled with air before the compressor 6 is started. Before the compressor 6 is started, the control system automatically opens the inert gas source cut-off valve 2, nitrogen from the inert gas source 1 has the pressure of 0.5-0.8 MPa, and the pressure of the pressure reducing valve 4 is reduced by less than or equal to 0.1MPa, preferably 0.01-0.05 MPa after the nitrogen enters the compressor inert gas inlet pipe 3. The nitrogen after pressure reduction is filtered by a filter 5 to remove impurities, enters the rear section of the compressor inert gas inlet pipe 3, the diffusing pipe 7 and the pressure relief pipe 10, and is discharged, the opening pressure of the check valve 16 is set to be less than or equal to 0.1MPa, preferably 0.01-0.05 MPa, so that micro-positive pressure is maintained in the compressor inert gas inlet pipe 3 and the diffusing pipe 7, nitrogen is filled in the pipelines, and the nitrogen is prevented from being directly emptied. After the inert gas inlet pipe 3 and the diffusing pipe 7 of the compressor are inerted by nitrogen for 1-5 minutes, the preferable time is 2 minutes, the system automatically closes the inert gas source cut-off valve 2, and the inert gas inlet pipe 3, the diffusing pipe 7 and the pressure relief pipe 10 of the compressor are filled with nitrogen at the moment.
After the pipeline is inerted, the compressor 6 starts, and after the starting, hydrogen leaked by the compressor 6 enters the compressor inert gas inlet pipe 3 and the diffusing pipe 7 through the rear end of the compressor inert gas inlet pipe 3 to vent the leaked hydrogen. The diffusing pipe 7 is provided with a flow switch 8, when the compressor is switched to a normal operation state, and when the flow in the diffusing pipe 7 is larger than a certain value, the hydrogen leakage of the compressor 6 exceeds the standard, and the system automatically interlocks to stop the operation of the compressor 6. If the leaked hydrogen causes overpressure of the diffusion pipe 7 under abnormal working conditions, in order to protect the normal operation of the pipeline and the compressor, the excessive hydrogen enters the pressure relief pipe 10 and is released through the safety valve 11, and the set pressure of the safety valve 11 is lower than the design pressure of the diffusion pipe 7, preferably 0.15 MPa.
The protection pipeline system of the compressor 6 can perform inerting treatment on a pipeline which is possibly contacted with hydrogen by using nitrogen before the hydraulic compressor 6 is started, so as to avoid forming explosive mixtures, and meanwhile, leaked hydrogen can be discharged in the running process of the hydraulic compressor 6, so that the safety of devices and personnel in a state that the hydraulic compressor 6 possibly has hydrogen leakage is ensured.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A compressor (6) protection pipe-line system, characterized in that: the device comprises an inert gas source (1), a compressor inert gas inlet pipe (3) and a diffusion pipe (7); the inert gas source (1) is connected with the compressor (6) through the compressor inert gas inlet pipe (3); an inert gas source cut-off valve (2) is arranged on the compressor inert gas inlet pipe (3), the air inlet end of the diffusing pipe (7) is connected with the compressor inert gas inlet pipe (3), and the connecting node of the air inlet end of the diffusing pipe (7) and the compressor inert gas inlet pipe (3) is positioned between the inert gas source cut-off valve (2) and the compressor (6); the diffusing pipe (7) is provided with a diffusing pipe check valve (9).
2. The compressor (6) protection circuit system according to claim 1, characterized in that: a flow switch (8) is arranged on the diffusing pipe (7), and the flow switch (8) is positioned at the upstream end of a check valve (9) of the diffusing pipe.
3. The compressor (6) protection circuit system according to claim 2, characterized in that: a pressure relief pipe (10) is connected in parallel with the check valve (9) of the relief pipe and the flow switch (8), and a safety valve (11) is arranged on the pressure relief pipe (10); the air inlet end of the pressure relief pipe (10) is connected with the diffusing pipe (7), and the connection node of the pressure relief pipe is positioned at the upstream end of the flow switch (8); the air outlet end of the pressure relief pipe (10) is connected with the diffusing pipe (7), and the connecting node of the pressure relief pipe is positioned at the downstream end of the check valve (9) of the diffusing pipe.
4. -compressor (6) protection circuit system according to claim 3, characterized in that: compressor inert gas intake pipe (3) are provided with relief pressure valve (4), relief pressure valve (4) are located the low reaches end of inert gas source trip valve (2), are located the inlet end of diffusing pipe (7) and the upstream end of the connected node of compressor inert gas intake pipe (3).
5. The compressor (6) protection circuit system according to claim 4, characterized in that: be provided with filter (5) on compressor inert gas intake pipe (3), filter (5) are located the downstream end of relief pressure valve (4), are located the inlet end of diffusing pipe (7) and the upstream end of the connected node of compressor inert gas intake pipe (3).
6. The compressor (6) protection circuit system according to claim 5, characterized in that: the pressure value of the forward conduction of the check valve is less than or equal to 0.1 MPa.
7. The compressor (6) protection circuit system according to claim 4, characterized in that: the pressure value of the upstream end of the pressure reducing valve (4) is 10-40 times that of the downstream end, and the pressure value of the downstream end of the pressure reducing valve (4) is less than or equal to 0.1 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020747611.3U CN212202434U (en) | 2020-05-09 | 2020-05-09 | Compressor protection pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020747611.3U CN212202434U (en) | 2020-05-09 | 2020-05-09 | Compressor protection pipeline system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212202434U true CN212202434U (en) | 2020-12-22 |
Family
ID=73815176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020747611.3U Active CN212202434U (en) | 2020-05-09 | 2020-05-09 | Compressor protection pipeline system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212202434U (en) |
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2020
- 2020-05-09 CN CN202020747611.3U patent/CN212202434U/en active Active
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