CN211042623U - Analyzer protector - Google Patents
Analyzer protector Download PDFInfo
- Publication number
- CN211042623U CN211042623U CN201922131760.7U CN201922131760U CN211042623U CN 211042623 U CN211042623 U CN 211042623U CN 201922131760 U CN201922131760 U CN 201922131760U CN 211042623 U CN211042623 U CN 211042623U
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- Prior art keywords
- valve
- hydrogen
- analyzer
- nitrogen
- protection device
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- 230000001012 protector Effects 0.000 title description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 120
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000001257 hydrogen Substances 0.000 claims abstract description 83
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 83
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 59
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000012806 monitoring device Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the field of protection devices, in particular to an analyzer protection device, which at least comprises a hydrogen inlet pipe, a first pressure regulating valve, a first pressure valve, a hand valve, an analyzer and a hydrogen vent pipe which are connected in sequence, wherein a power module supplies power for the analyzer; still include nitrogen intake pipe and relay box, nitrogen intake pipe connection has first branch road to between the inlet end of check valve and analysis appearance, nitrogen intake pipe branch has, first branch road is connected to the gas-open valve, still is provided with first solenoid valve on the first branch road, first solenoid valve is connected to the relay box, and power module and monitoring devices are connected to the relay box. The utility model discloses can take place when hydrogen reveals in the analysis appearance cabinet, the automatic cutout hydrogen air supply, simultaneously, can avoid cutting off because of the hydrogen air supply, and the blow-down pipe that leads to the analysis appearance is direct empty, gives the analysis appearance protection.
Description
Technical Field
The utility model belongs to the protection device field especially relates to an analysis appearance protection device.
Background
As shown in fig. 1, in the conventional hydrogen and oxygen analyzer, hydrogen enters an analyzer 13 through a hydrogen inlet pipe 19, is subjected to pressure regulation by a first pressure regulating valve 2, enters a hand valve 3, is analyzed by the analyzer 13, and is discharged to the atmosphere through a hydrogen vent pipe 18.
When hydrogen leaks from the analyzer cabinet, an electrical device arranged in the analyzer cabinet may generate electrostatic sparks to cause the hydrogen to catch fire or explode. When the front end hydrogen gas source is cut off, no hydrogen enters the analyzer, the emptying pipeline of the analyzer is directly empty, and air enters the analyzer through the emptying pipeline under the action of atmospheric pressure. The oxygen content in air is about 21%, and a large amount of oxygen enters the analyzer along with the entering of air, so that the analyzer is damaged or poisoned and scrapped. Meanwhile, air flows back to the hydrogen system through the analyzer to pollute the hydrogen system.
Therefore, it is very necessary to research and design a protection device for a hydrogen and oxygen analyzer.
Disclosure of Invention
An object of the utility model is to provide a hydrogen oxygen analysis appearance protection device to solve the problem in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a protection device for an analyzer at least comprises a hydrogen inlet pipe, a first pressure regulating valve, a first pressure valve, a hand valve, the analyzer and a hydrogen emptying pipe which are sequentially connected, wherein a power supply module supplies power to the analyzer; still include nitrogen intake pipe and relay box, nitrogen intake pipe is connected to between the inlet end of check valve and analysis appearance, and the nitrogen intake pipe branch has first branch road, first branch road is connected to the gas-open valve, still is provided with first solenoid valve on the first branch road, first solenoid valve is connected to the relay box, relay box connection power module and the monitoring devices who is used for monitoring hydrogen concentration.
Preferably, the nitrogen inlet pipe is further provided with a second pressure regulating valve and a second pressure gauge.
Preferably, a hydrogen flow switch is arranged between the hand valve and the one-way valve, and the hydrogen flow switch is connected to the relay box.
Preferably, when the hydrogen flow switch detects that the gas flow is higher or lower than a certain set point, an output electric signal is triggered and transmitted to the relay box.
Preferably, a second electromagnetic valve is arranged on the nitrogen inlet pipe and connected to the relay box.
Preferably, the first branch is further divided into a second branch, the second branch is connected to the power supply module, a nitrogen flow switch is arranged on the second branch, and the nitrogen flow switch is connected to a power supply end of the analyzer.
Preferably, when the nitrogen flow switch detects that the nitrogen flow is low, the interior of the nitrogen flow switch is powered off, and the analyzer is powered off and stopped.
Preferably, when the first solenoid valve is opened, the gas-open valve cylinder receives nitrogen gas, and opens the gas-open valve to allow hydrogen gas to enter.
Preferably, the monitoring device is a hydrogen detector.
The utility model can automatically cut off the hydrogen gas source when hydrogen leakage occurs in the analyzer cabinet, avoid electrostatic sparks possibly generated by an electrical device arranged in the analyzer cabinet, and prevent hydrogen from being ignited or exploded; meanwhile, the vent pipe of the analyzer can be prevented from being directly empty due to the cut-off of the hydrogen gas source, and the analyzer is protected.
Drawings
Fig. 1 is a schematic diagram of a prior art analyzer.
Fig. 2 is the utility model discloses specific analysis appearance protection device schematic structure.
The attached drawings are marked as follows: 1. opening a valve by air; 2. a first pressure regulating valve; 3. a hand valve; 4. a first solenoid valve; 5. a second pressure regulating valve; 6. a second solenoid valve; 7. a one-way valve; 8. a first pressure gauge; 9. a second pressure gauge; 10. a nitrogen flow switch; 11. a hydrogen flow switch; 12. a monitoring device; 13. an analyzer; 14. a relay box; 15. a first branch; 16. a second branch circuit; 17. a power supply module; 18. a hydrogen blow-down pipe; 19. a hydrogen inlet pipe; 20. a nitrogen inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The analyzer 13 mentioned in the present invention is an analyzer 13 for analyzing the content of ultra-micro oxygen, which can be used for analyzing the content of oxygen in hydrogen or nitrogen, and in this embodiment, is used for analyzing the content of oxygen in hydrogen. The analyzer 13 and the components mentioned herein are disposed in an analyzer cabinet.
Referring to the attached drawing 2, the utility model provides a pair of analyzer protection device, including hydrogen intake pipe 19, first air-vent valve 2, first manometer 8, hand valve 3, analysis appearance 13, hydrogen blow-down pipe 18 that connect gradually. Hydrogen enters along a hydrogen inlet pipe 19, a pressure value is read through a first pressure gauge 8, the entering amount of the hydrogen is controlled by adjusting a first pressure regulating valve 2, and the hydrogen is analyzed and processed by an analyzer 13 and finally discharged from a hydrogen vent pipe 18. The hand valve 3 is used for isolating hydrogen during maintenance so as to avoid leakage of the hydrogen.
Wherein, an air opening valve 1 is arranged between the hydrogen inlet pipe 19 and the first pressure regulating valve 2, the air opening valve 1 can be opened only by receiving a gas pressure signal, and the valve can be closed after the air is cut off; a one-way valve 7 is arranged between the hand valve 3 and the gas inlet end of the analyzer 13, the one-way valve 7 can prevent gas from flowing backwards, and the gas can only flow in the direction of an arrow at the one-way valve 7 in the attached drawing 2, so that pollution to a hydrogen system is avoided.
Meanwhile, because the emptying pipe of the existing analyzer 13 is directly empty, air can enter the analyzer 13 through the emptying pipe under the action of atmospheric pressure, and the analyzer 13 is easily damaged or poisoned and scrapped along with a large amount of oxygen in the air entering the analyzer, so that a protective device is set pertinently.
The protection device comprises a nitrogen inlet pipe 20 and a relay box 14, wherein the nitrogen inlet pipe 20 is connected between the check valve 7 and the air inlet end of the analyzer 13, a second pressure regulating valve 5, a second pressure gauge 9 and a second electromagnetic valve 6 are sequentially arranged on the nitrogen inlet pipe 20, and the second electromagnetic valve 6 is connected to the relay box 14. The nitrogen inlet pipe 20 is further divided into a first branch 15, the first branch 15 is connected to the air valve 1, a first electromagnetic valve 4 is further arranged on the first branch 15, and the first electromagnetic valve 4 is connected to the relay box 14. The relay box 14 is further connected with a monitoring device 12 for monitoring the hydrogen concentration, and the monitoring device 12 may be a hydrogen detector.
The opening and closing of the gas open valve 1 are independently controlled by introducing nitrogen, but the gas open valve 1 is automatically opened when hydrogen is introduced. Because if the external hydrogen source does not leak, the hydrogen can be normally conveyed, but when the hydrogen leaks in the analyzer cabinet, the hydrogen source is continuously conveyed, the gas opening valve 1 still keeps a normal opening state, the input of the hydrogen source cannot be cut off, and potential safety hazards exist.
Further, the first branch 15 is further divided into a second branch 16, the second branch 16 is connected to a power module 17, a nitrogen flow switch 10 is arranged on the second branch 16, and the nitrogen flow switch 10 is connected to a power supply end of the analyzer 13; a hydrogen flow switch 11 is provided between the hand valve 3 and the check valve 7, and the hydrogen flow switch 11 is connected to a relay box 14. The hydrogen flow switch 11 and the nitrogen flow switch 10 are used for monitoring the magnitude of the gas flow in the gas medium pipeline. When the gas flow is higher or lower than a certain set point, the hydrogen flow switch 11 triggers an output electric signal and transmits the signal to the relay box 14, and the relay box 14 can make a corresponding indication action after acquiring the signal. When the nitrogen flow switch 10 detects that the nitrogen flow is low, the nitrogen flow switch 10 is internally powered off, and the analyzer 13 is powered off and stopped.
The whole device is powered by an external power supply, the power supplies of the relay box 14 and the nitrogen flow switch 10 are directly from the power supply module 17, and devices connected to the relay box 14 can directly utilize the electric energy of the relay box 14; the power supply terminal of the analyzer 13 is connected to the nitrogen flow switch 10, current flows through the nitrogen flow switch 10 into the analyzer 13, and when the nitrogen flow switch 10 detects that the nitrogen flow is low, the interior of the nitrogen flow switch 10 is powered off, the circuit is not conducted, so that the analyzer 13 is powered off and stopped.
When in specific use: the alarm value of the hydrogen concentration is set through the hydrogen detector, when no leakage occurs in the analyzer cabinet, the first electromagnetic valve 4 is kept open, the second electromagnetic valve 6 is kept closed, the nitrogen provided by the nitrogen inlet pipe 20 is only used for opening the gas valve 1, so that the hydrogen enters the analyzer 13 along the hydrogen inlet pipe 19, and the analyzer 13 works normally;
in addition, if the front-end equipment of the analyzer 13 is abnormally shut down, no hydrogen enters the hydrogen inlet pipe 19, and no hydrogen leaks in the analyzer cabinet. Because the hydrogen detector does not detect hydrogen leakage, and the hydrogen flow switch 11 detects that the hydrogen flow is low, the hydrogen flow switch 11 will interlock the relay box 14 to open the second electromagnetic valve 6, and nitrogen enters the analyzer 13 through the nitrogen inlet pipe 20 and the second electromagnetic valve 6 to protect the analyzer 13. In the process, the check valve 7 prevents high-pressure nitrogen from entering the hydrogen system, so that the hydrogen system is prevented from being polluted. Meanwhile, the start and stop of the analyzer 13 are controlled by the nitrogen flow switch 10. When the nitrogen flow switch 10 detects that the nitrogen flow is normal, the analyzer 13 is powered on to normally work, otherwise, the nitrogen flow switch 10 is turned off, and the power supply module 17 is cut off, so that the analyzer 13 is powered off and shut down.
When the leakage exists in the analyzer cabinet and reaches the alarm value, the hydrogen is indicated to have certain leakage, and after the hydrogen detector detects the leakage, the hydrogen detector can interlock the relay box 14 to close the first electromagnetic valve 4. Due to the closing of the first electromagnetic valve 4, the cylinder of the gas opening valve 1 cannot receive nitrogen, so that the gas opening valve 1 is closed, a hydrogen gas source is cut off, and hydrogen cannot enter the analyzer cabinet.
Meanwhile, as the hydrogen gas leaks, the gas valve 1 on the hydrogen gas pipeline is closed, so that the hydrogen gas flow in the pipeline is reduced, and when the hydrogen gas flow switch 11 detects that the hydrogen gas flow is low, the relay box 14 is interlocked to open the second electromagnetic valve 6, so that the nitrogen gas enters the analyzer 13 through the nitrogen inlet pipe 20 and the second electromagnetic valve 6, and the analyzer 13 is protected. In the process, the check valve 7 prevents high-pressure nitrogen from entering the hydrogen system, so that the hydrogen system is prevented from being polluted.
In addition, due to the closing of the first electromagnetic valve 4, no nitrogen enters the nitrogen flow switch 10, the nitrogen flow switch 10 is closed, and the power module 17 is cut off, so that the analyzer 13 is powered off and shut down for protection.
The utility model can automatically cut off the hydrogen gas source when hydrogen leakage occurs in the analyzer cabinet, avoid electrostatic sparks possibly generated by an electrical device arranged in the analyzer cabinet, and prevent hydrogen from being ignited or exploded; meanwhile, the vent pipe of the analyzer 13 can be prevented from being directly empty due to the cut-off of the hydrogen gas source, and the analyzer 13 is protected.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an analysis appearance protection device, at least including the hydrogen intake pipe, first air-vent valve, first pressure valve, hand valve, analysis appearance and the hydrogen blow-down pipe that connect gradually, power module is the analysis appearance power supply, its characterized in that: an air opening valve is arranged between the hydrogen inlet pipe and the first pressure regulating valve, and a one-way valve is arranged between the hand valve and the air inlet end of the analyzer; still include nitrogen intake pipe and relay box, nitrogen intake pipe is connected to between the inlet end of check valve and analysis appearance, and the nitrogen intake pipe branch has first branch road, first branch road is connected to the gas-open valve, still is provided with first solenoid valve on the first branch road, first solenoid valve is connected to the relay box, relay box connection power module and the monitoring devices who is used for monitoring hydrogen concentration.
2. An analyzer protection device according to claim 1, wherein: and a second pressure regulating valve and a second pressure gauge are also arranged on the nitrogen inlet pipe.
3. An analyzer protection device according to claim 1, wherein: and a hydrogen flow switch is arranged between the hand valve and the one-way valve and is connected to the relay box.
4. An analyzer protection device according to claim 3, wherein: when the hydrogen flow switch detects that the gas flow is higher or lower than a set point, an output electric signal is triggered and transmitted to the relay box.
5. An analyzer protection device according to claim 1, wherein: and a second electromagnetic valve is arranged on the nitrogen inlet pipe and connected to the relay box.
6. An analyzer protection device according to claim 1, wherein: the first branch is also divided into a second branch, the second branch is connected to the power supply module, a nitrogen flow switch is arranged on the second branch, and the nitrogen flow switch is connected to a power supply end of an analyzer.
7. An analyzer protection device according to claim 6, wherein: and when the nitrogen flow switch detects that the nitrogen flow is low, the interior of the nitrogen flow switch is powered off, and the analyzer is powered off and stopped.
8. An analyzer protection device according to claim 1, wherein: when the first electromagnetic valve is opened, the cylinder of the gas-open valve receives nitrogen, and the gas-open valve is opened to allow hydrogen to enter.
9. An analyzer protection device according to claim 1, wherein: the monitoring device is a hydrogen detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131760.7U CN211042623U (en) | 2019-12-03 | 2019-12-03 | Analyzer protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131760.7U CN211042623U (en) | 2019-12-03 | 2019-12-03 | Analyzer protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042623U true CN211042623U (en) | 2020-07-17 |
Family
ID=71530239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922131760.7U Active CN211042623U (en) | 2019-12-03 | 2019-12-03 | Analyzer protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211042623U (en) |
-
2019
- 2019-12-03 CN CN201922131760.7U patent/CN211042623U/en active Active
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