CN220417055U - Hydrogen pipeline safety device - Google Patents
Hydrogen pipeline safety device Download PDFInfo
- Publication number
- CN220417055U CN220417055U CN202321815842.3U CN202321815842U CN220417055U CN 220417055 U CN220417055 U CN 220417055U CN 202321815842 U CN202321815842 U CN 202321815842U CN 220417055 U CN220417055 U CN 220417055U
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- CN
- China
- Prior art keywords
- pipe
- hydrogen
- air
- gas
- pressure relief
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000001257 hydrogen Substances 0.000 title claims abstract description 49
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 62
- 238000000605 extraction Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000002699 waste material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Abstract
The utility model relates to the technical field of pipeline safety protection, in particular to a hydrogen pipeline safety protection device, which comprises a gas pipe and a pressure relief pipe, wherein the pressure relief pipe is communicated with the right side of the upper end of the gas pipe; according to the utility model, the piston is pushed upwards by air pressure, the electromagnetic valve is opened by starting the proximity switch, and the air pump is started automatically, so that the speed of discharging hydrogen into the air collection tank can be accelerated by the operation of the air pump, and the effect of rapid pressure relief is achieved, so that the hydrogen generated after pressure relief is discharged into the air collection tank to be collected, the pipeline can be subjected to pressure relief protection, the hydrogen generated during pressure relief can be prevented from being directly discharged into the air, and the waste of the hydrogen gas after pressure relief is reduced.
Description
Technical Field
The utility model relates to the technical field of pipeline safety protection, in particular to a hydrogen pipeline safety protection device.
Background
Hydrogen is the lightest known gas in the world. The density of the hydrogen is very small and only 1/14 of that of air, namely, the density of hydrogen is 0.0899g/L at the standard atmospheric pressure and the temperature of 0 ℃, pipeline transportation is needed in the hydrogen transportation process, and the pipeline transportation is large, continuous, rapid, economical, safe, reliable, stable, low in investment, small in occupied area and low in cost, can realize automatic control, is very widely applied in industrial production, and can be used for transporting all chemically stable substances in terms of liquid and gas.
As disclosed in chinese patent application No. 202122517881.2, a leak-proof chemical gas transportation pipeline belongs to the field of gas transportation, and comprises a safety shield, a transportation pipeline, a leak-proof pipeline, a transmission pipe, a pair of pressure measuring plates and a baffle plate; a safety protection cavity is arranged in the safety protection cover; the conveying pipeline comprises an inlet pipeline and an output pipeline, and the inlet pipeline and the output pipeline are respectively arranged on opposite surfaces of the safety protection cover and are connected into the safety protection cavity; according to the utility model, the leakage-proof pipeline is arranged at the joint between the inlet pipeline and the output pipeline, so that the chemical gas conveyed by the leakage-proof pipeline can be judged in advance when passing through the leakage-proof pipeline, whether the chemical gas conveyed into the inlet pipeline is conveyed or not can be ensured by the pressure measuring plate, the output pipeline can be influenced due to overlarge pressure, the baffle plate can be opened when the pressure is overlarge, and partial pressure release is carried out on the chemical gas in the leakage-proof pipeline.
However, the utility model has the following defects that in the chemical gas conveying process, particularly in the hydrogen conveying process, the pressure relief effect is achieved, and the gas after pressure relief is generally directly discharged into the air due to the lack of measures for recovering the gas after pressure relief, so that the gas waste is caused, and the longer the pressure relief time is, the more serious the gas waste is, so that compared with the prior art, the utility model has the problem of reducing the waste of the pressure relief gas on the premise of ensuring the normal pressure relief protection of a pipeline.
Disclosure of Invention
The utility model provides a safety protection device for a hydrogen pipeline, which is beneficial to ensuring normal pressure relief protection of the pipeline and reducing waste of pressure relief gas.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the safety protection device for the hydrogen pipeline comprises a gas pipe and a pressure relief pipe, wherein the pressure relief pipe is communicated with the right side of the upper end of the gas pipe;
an annular sleeve is fixed at the lower end in the pressure relief pipe, a piston is arranged in the annular sleeve, a spring telescopic rod is connected between the upper end of the piston and the inner top end of the pressure relief pipe, a gas collection tank is arranged above the gas transmission pipe, and a hydrogen gas extraction component is arranged on the right of the gas collection tank;
and a hydrogen return assembly is arranged at the left of the gas collection tank.
Further, the hydrogen gas extraction assembly comprises an air outlet pipe, a first pressure gauge, an electromagnetic valve, a suction pump, a proximity switch and a proximity plate, wherein the air outlet pipe is communicated with the left side of the pressure relief pipe, and the first pressure gauge is arranged at the upper end of the air outlet pipe.
Further, the electromagnetic valve is communicated with the left end of the air outlet pipe, the air pump is communicated with the right lower end of the air collecting tank, and the left end of the electromagnetic valve is communicated with the air pumping hole of the air pump.
Further, the proximity switch is connected to the inner wall of the pressure relief pipe, the proximity plate is connected to the upper end of the piston, and the proximity switch corresponds to the proximity plate up and down.
Further, a second pressure gauge is arranged at the upper end of the gas collection tank.
Further, the hydrogen return assembly comprises an exhaust pump, a return pipe and an air inlet valve, wherein the exhaust pump is communicated with the left end of the gas collection tank, the return pipe is communicated with an exhaust port of the exhaust pump, the air inlet valve is communicated between the return pipe and the gas transmission pipe, and an exhaust valve is communicated with the outer side of the return pipe.
The utility model has the beneficial effects that:
1. through setting up the relief pipe, when the hydrogen pressure in the gas transmission pipe is great, the air pressure upwards promotes the piston, and opens the solenoid valve through the start-up of proximity switch, and the aspiration pump is automatic to start simultaneously, and the work of aspiration pump can accelerate the speed that hydrogen was discharged into the gas collection jar to reach the effect of quick pressure release, consequently do benefit to the hydrogen that produces after the pressure release and discharge into the gas collection jar and collect, not only can carry out the pressure release protection to the pipeline, can prevent moreover that the hydrogen that produces when the pressure release from directly discharging to the air in, do benefit to the waste that reduces the hydrogen gas after the pressure release;
2. after the air inlet valve is opened and the exhaust pump is started, when the air pressure in the air conveying pipe is smaller, the hydrogen in the air collecting tank is discharged into the air conveying pipe again through the return pipe to be conveyed, so that the hydrogen in the air collecting tank can be continuously conveyed and utilized, and the waste of the hydrogen gas after pressure relief is better reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a pressure relief tube according to the present utility model;
fig. 3 is a schematic diagram of the overall pressure relief operation structure of the present utility model.
Reference numerals illustrate:
the device comprises a gas transmission pipe 1, a gas collection tank 2, a pressure relief pipe 3, a gas outlet pipe 4, a first pressure gauge 5, an electromagnetic valve 6, a gas pump 7, a second pressure gauge 8, a return pipe 9, a gas outlet valve 10, a gas inlet valve 11, an annular sleeve 12, a piston 13, a spring telescopic rod 14, a proximity switch 15, a proximity plate 16 and a gas outlet pump 17.
Detailed Description
The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.
As shown in fig. 1-3, in this embodiment, the device comprises a gas pipe 1 and a pressure relief pipe 3, the pressure relief pipe 3 is communicated with the right side of the upper end of the gas pipe 1, an annular sleeve 12 is fixed at the inner lower end of the pressure relief pipe 3, a piston 13 is arranged in the annular sleeve 12, a spring telescopic rod 14 is connected between the upper end of the piston 13 and the inner top end of the pressure relief pipe 3, a gas collection tank 2 is arranged above the gas pipe 1, a hydrogen gas extraction component is arranged on the right side of the gas collection tank 2, and the hydrogen gas extraction component comprises a gas outlet pipe 4, a first pressure gauge 5, an electromagnetic valve 6, an air pump 7, a proximity switch 15 and a proximity plate 16;
when the device carries the in-process of hydrogen, through setting up pressure release pipe 3, when the hydrogen atmospheric pressure in the gas-supply pipe 1 is great, the hydrogen gas can enter into pressure release pipe 3, and atmospheric pressure can upwards promote piston 13, and piston 13 can shift out annular cover 12, and piston 13 can compress spring telescopic link 14 simultaneously, and consequently the hydrogen can enter into in outlet duct 4 through annular cover 12, and this moment first manometer 5 can detect this hydrogen atmospheric pressure to the atmospheric pressure size when measuring this moment pressure release.
As shown in fig. 2-3, in this embodiment, the air outlet pipe 4 is connected to the left side of the pressure relief pipe 3, the first pressure gauge 5 is installed at the upper end of the air outlet pipe 4, the electromagnetic valve 6 is connected to the left end of the air outlet pipe 4, the air pump 7 is connected to the right lower end of the air collection tank 2, the left end of the electromagnetic valve 6 is connected to the air suction opening of the air pump 7, the proximity switch 15 is connected to the inner wall of the pressure relief pipe 3, the proximity plate 16 is connected to the upper end of the piston 13, and the proximity switch 15 corresponds to the proximity plate 16 vertically.
When the piston 13 moves upwards, the approaching plate 16 is driven to move upwards together, so that the approaching plate 16 is close to the sensing end of the approaching switch 15, the electromagnetic valve 6 and the air pump 7 are connected in series, after the approaching switch 15 is opened, the electromagnetic valve 6 is opened through the starting of the approaching switch 15, and meanwhile, the air pump 7 is automatically started, so that hydrogen in the air outlet pipe 4 can enter the air collection tank 2 through the electromagnetic valve 6 and the air pump 7, and the work of the air pump 7 can accelerate the speed of discharging the hydrogen into the air collection tank 2, thereby achieving the effect of rapid pressure relief, being beneficial to collecting the hydrogen generated after pressure relief into the air collection tank 2, not only protecting the pipeline for pressure relief, but also preventing the hydrogen generated during pressure relief from being directly discharged into the air, and being beneficial to reducing the waste of the hydrogen gas after pressure relief.
As shown in fig. 3, in this embodiment, a hydrogen return assembly is disposed at the left side of the gas collection tank 2, and the hydrogen return assembly includes an exhaust pump 17, a return pipe 9 and an intake valve 11, where the exhaust pump 17 is connected to the left end of the gas collection tank 2, the return pipe 9 is connected to an exhaust port of the exhaust pump 17, and the intake valve 11 is connected between the return pipe 9 and the gas delivery pipe 1.
When the hydrogen in the gas collection tank 2 needs to be recycled, the piston 13 moves downwards and covers the annular sleeve 12 through the resilience force of the spring telescopic rod 14 on the premise that the pressure of the hydrogen conveyed in the gas conveying pipe 1 is small, the proximity switch 15, the electromagnetic valve 6 and the air suction pump 7 can be closed as the piston 13 drives the proximity plate 16 to be far away from the proximity switch 15, the air suction pump 17 and the air suction valve 11 are opened, the air suction pump 17 can pump the hydrogen in the gas collection tank 2 into the return pipe 9 and the air suction valve 11, and then the air suction valve 11 discharges the hydrogen into the gas conveying pipe 1, so that the hydrogen can be discharged into the gas conveying pipe 1 again for conveying, the hydrogen in the gas collection tank 2 can be continuously conveyed for use, and the waste of the hydrogen after pressure relief is reduced better.
In this embodiment, as shown in fig. 3, the outside of the return pipe 9 is communicated with an exhaust valve 10, and the upper end of the gas collection tank 2 is provided with a second pressure gauge 8.
When the hydrogen gas is collected in the gas collection tank 2, the second pressure gauge 8 can detect the air pressure in the gas collection tank 2, if the air pressure in the gas collection tank 2 is detected to be overlarge, in order to prevent the air pressure in the gas collection tank 2 from continuously increasing, the exhaust valve 10 is opened to discharge part of the hydrogen, and the hydrogen discharged through the exhaust valve 10 can be collected through an external collection tank, so that the effect of pressure relief on the gas collection tank 2 is achieved.
All technical features in the embodiment can be freely combined according to actual needs.
The foregoing embodiments are preferred embodiments of the present utility model, and other embodiments are included, without departing from the spirit of the present utility model.
Claims (6)
1. The utility model provides a hydrogen pipeline safety device, includes gas-supply pipe (1) and pressure release pipe (3), pressure release pipe (3) communicate in gas-supply pipe (1) upper end right side, its characterized in that:
an annular sleeve (12) is fixed at the inner lower end of the pressure relief pipe (3), a piston (13) is arranged in the annular sleeve (12), a spring telescopic rod (14) is connected between the upper end of the piston (13) and the inner top end of the pressure relief pipe (3), a gas collection tank (2) is arranged above the gas transmission pipe (1), and a hydrogen gas extraction component is arranged on the right of the gas collection tank (2);
and a hydrogen return assembly is arranged at the left side of the gas collection tank (2).
2. A hydrogen line safety device as claimed in claim 1, wherein: the hydrogen gas extraction assembly comprises an air outlet pipe (4), a first pressure gauge (5), an electromagnetic valve (6), a gas extraction pump (7), a proximity switch (15) and a proximity plate (16), wherein the air outlet pipe (4) is communicated with the left side of the pressure relief pipe (3), and the first pressure gauge (5) is arranged at the upper end of the air outlet pipe (4).
3. A hydrogen line safety device as claimed in claim 2, wherein: the electromagnetic valve (6) is communicated with the left end of the air outlet pipe (4), the air sucking pump (7) is communicated with the right lower end of the air collecting tank (2), and the left end of the electromagnetic valve (6) is communicated with an air sucking opening of the air sucking pump (7).
4. A hydrogen line safety device as claimed in claim 2, wherein: the proximity switch (15) is connected to the inner wall of the pressure relief pipe (3), the proximity plate (16) is connected to the upper end of the piston (13), and the proximity switch (15) corresponds to the proximity plate (16) up and down.
5. A hydrogen line safety device as claimed in claim 1, wherein: the upper end of the gas collection tank (2) is provided with a second pressure gauge (8).
6. A hydrogen line safety device as claimed in claim 1, wherein: the hydrogen return assembly comprises an exhaust pump (17), a return pipe (9) and an air inlet valve (11), wherein the exhaust pump (17) is communicated with the left end of the air collection tank (2), the return pipe (9) is communicated with an exhaust port of the exhaust pump (17), the air inlet valve (11) is communicated between the return pipe (9) and the air delivery pipe (1), and an exhaust valve (10) is communicated with the outer side of the return pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815842.3U CN220417055U (en) | 2023-07-11 | 2023-07-11 | Hydrogen pipeline safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815842.3U CN220417055U (en) | 2023-07-11 | 2023-07-11 | Hydrogen pipeline safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220417055U true CN220417055U (en) | 2024-01-30 |
Family
ID=89658123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321815842.3U Active CN220417055U (en) | 2023-07-11 | 2023-07-11 | Hydrogen pipeline safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220417055U (en) |
-
2023
- 2023-07-11 CN CN202321815842.3U patent/CN220417055U/en active Active
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| GR01 | Patent grant |