CN220436243U - Sample gas analysis steady voltage system - Google Patents
Sample gas analysis steady voltage system Download PDFInfo
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- CN220436243U CN220436243U CN202321771406.0U CN202321771406U CN220436243U CN 220436243 U CN220436243 U CN 220436243U CN 202321771406 U CN202321771406 U CN 202321771406U CN 220436243 U CN220436243 U CN 220436243U
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- regulating valve
- sample gas
- pressure regulating
- vacuum
- source interface
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- 238000004868 gas analysis Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 59
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000001105 regulatory effect Effects 0.000 claims abstract description 55
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 238000004146 energy storage Methods 0.000 claims abstract description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 abstract description 5
- 230000006641 stabilisation Effects 0.000 abstract description 4
- 238000011105 stabilization Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of sample gas on-line analysis pressure stabilization, in particular to a sample gas analysis pressure stabilization system which comprises a nitrogen source interface, a primary pressure regulating valve, a secondary pressure regulating valve, a vacuum pressure regulating valve, an energy storage vacuum tank, a one-way valve, an ejector and a sample gas source interface, wherein the secondary pressure regulating valve, the vacuum pressure regulating valve, the energy storage vacuum tank and the one-way valve are sequentially connected with the primary pressure regulating valve, the ejector is simultaneously connected with the nitrogen source interface, the one-way valve and the flare opening interface, the sample gas source interface is arranged between the secondary pressure regulating valve and the vacuum pressure regulating valve, the nitrogen source interface is respectively connected with an air inlet end of the ejector and an input end of the primary pressure regulating valve by means of a tee joint, an output end of the one-way valve is connected with a low-pressure air inlet end of the ejector, and an input end of the flare opening interface is connected with an output end of the ejector.
Description
Technical Field
The utility model relates to the technical field of sample gas on-line analysis and pressure stabilization, in particular to a sample gas analysis and pressure stabilization system.
Background
In the gas on-line detection industry, such as tail gas, the tail gas is detected and then is required to be discharged into a torch for tail gas treatment, but the air pressure in a torch pipeline is higher than the atmospheric pressure, so that the back pressure of the instrument is too high, the analysis result of the instrument is affected, and the gas in the instrument cannot be discharged.
Therefore, a pressure stabilizing system is required to be additionally arranged at the position of a torch air inlet, the existing pressure stabilizing system still has obvious defects, for example, the publication number is CN 109882734A, the name is a disclosed pressure stabilizing system of a constant pressure discharge system, once a discharge outlet is blocked, high-pressure nitrogen can be flushed into the whole system to cause irreversible damage to low-pressure devices so as to damage the whole system, and the discharge outlet generates instantaneous ultrahigh back pressure due to abnormality, a jet pump can be immediately disabled and cannot generate vacuum, so that the pressure of a sample gas discharge pipeline is immediately changed, and the accuracy of sample gas detection is affected.
Disclosure of Invention
In order to solve the problems, the utility model provides a sample gas analysis voltage stabilizing system, which effectively avoids damage to a low-voltage device caused by high-pressure gas impact, prolongs the service life, ensures the pressure stability at a sample gas source interface and effectively improves the accuracy of sample gas detection.
The technical scheme adopted by the utility model is that the sample gas analysis pressure stabilizing system comprises a nitrogen source interface, a primary pressure regulating valve, a secondary pressure regulating valve, a vacuum pressure regulating valve, an energy storage vacuum tank, a one-way valve, an ejector and a sample gas source interface, wherein the secondary pressure regulating valve, the vacuum pressure regulating valve, the energy storage vacuum tank and the one-way valve are sequentially connected with the primary pressure regulating valve, the ejector is simultaneously connected with the nitrogen source interface, the one-way valve and the flare opening interface, the sample gas source interface is arranged between the secondary pressure regulating valve and the vacuum pressure regulating valve, the nitrogen source interface is respectively connected with an air inlet end of the ejector and an input end of the primary pressure regulating valve by means of a tee joint, an output end of the one-way valve is connected with a low-pressure air inlet end of the ejector, an input end of the flare opening interface is connected with an output end of the ejector, and the sample gas source interface is respectively connected with the secondary pressure regulating valve and the vacuum pressure regulating valve by means of the tee joint.
A vacuum flowmeter is arranged between the sample gas source interface and the vacuum pressure regulating valve.
The secondary pressure regulating valve is a pressure regulating valve with a diffusing function.
The device comprises a nitrogen source interface, a primary pressure regulating valve, a secondary pressure regulating valve, a sample gas source interface, a vacuum flowmeter, a fourth pressure gauge, a fifth pressure gauge and a flare opening interface, wherein the first pressure gauge is arranged between the nitrogen source interface and the primary pressure regulating valve, the second pressure gauge is arranged between the primary pressure regulating valve and the secondary pressure regulating valve, the third pressure gauge is arranged on the sample gas source interface, the fourth pressure gauge is arranged between the vacuum flowmeter and the vacuum pressure regulating valve, and the fifth pressure gauge is arranged between the output end of the injector and the flare opening interface.
The beneficial effects of the utility model are as follows:
1. a one-way valve is arranged between the energy storage vacuum tank and the ejector, high-pressure nitrogen cannot enter the sample gas discharge pipeline and cannot contact the low-pressure device, so that the damage of the high-pressure gas to the low-pressure device and the influence on a sample gas analysis system pipeline are effectively avoided;
2. when the jet pump of the ejector cannot generate vacuum because of instantaneous ultrahigh back pressure, the vacuum in the energy storage vacuum tank can still provide vacuum for the system in a short time, after the ultrahigh back pressure is reduced, the ejector continues to supplement the vacuum tank with vacuum, and the pressure of the sample gas source interface and the pipeline of the energy storage vacuum tank cannot change during the period, and the suction flow cannot change.
3. After entering from the nitrogen source interface, nitrogen is divided into two parts, one part of the nitrogen enters the primary pressure reducing valve in sequence, the second pressure reducing valve enters the sample gas source interface, the other part of the nitrogen enters the ejector, the low pressure port of the ejector generates vacuum, and the nitrogen sequentially passes through the one-way valve, the energy storage vacuum tank, the vacuum pressure reducing valve and the vacuum flowmeter to perform constant pressure and quantitative extraction on the mixed gas of the sample gas and the nitrogen at the sample gas source interface.
Drawings
FIG. 1 is a system block diagram of the present utility model;
in the drawings, 1, a nitrogen source interface, 2, a primary pressure regulating valve, 3, a secondary pressure regulating valve, 4, a vacuum pressure regulating valve, 5, an energy storage vacuum tank, 6, a one-way valve, 7, a flare opening interface, 8, an ejector, 9, a sample gas source interface, 10, a vacuum flowmeter, 11, a first pressure gauge, 12, a second pressure gauge, 13, a third pressure gauge, 14, a fourth pressure gauge, 15 and a fifth pressure gauge.
Detailed Description
As shown in fig. 1, the utility model provides a sample gas analysis pressure stabilizing system, which comprises a nitrogen source interface 1, a primary pressure regulating valve 2, a secondary pressure regulating valve 3, a vacuum pressure regulating valve 4, an energy storage vacuum tank 5 and a one-way valve 6 which are sequentially connected with the primary pressure regulating valve 2, an ejector 8 which is simultaneously connected with the nitrogen source interface 1, the one-way valve 6 and a flare opening interface 7, and a sample gas source interface 9 which is arranged between the secondary pressure regulating valve 3 and the vacuum pressure regulating valve 4, wherein the nitrogen source interface 1 is respectively connected with an air inlet end of the ejector 8 and an input end of the primary pressure regulating valve 2 by means of a tee joint, an output end of the one-way valve 6 is connected with a low-pressure air inlet end of the ejector 8, an input end of the flare opening interface 7 is connected with an output end of the ejector 8, and the sample gas source interface 9 is respectively connected with the secondary pressure regulating valve 3 and the vacuum pressure regulating valve 4 by means of the tee joint.
Sample gas enters from a sample gas source interface 9 after detection is finished, a nitrogen gas source is connected to a nitrogen gas source interface 1, nitrogen gas enters and is divided into two paths, one path of the nitrogen gas enters an ejector 8 directly through a gas inlet to provide a positive pressure gas source for the ejector 8, the other path of the nitrogen gas is depressurized through a primary pressure regulating valve 2 and a secondary pressure regulating valve 3 and then is mixed with the sample gas entering from the sample gas source interface 9, the ejector 8 generates negative pressure at a negative pressure port by means of the positive pressure gas source, the negative pressure suction sequentially sucks the mixed gas in the sample gas source interface 9 through a one-way valve 6, an energy storage vacuum tank 5 and a vacuum pressure regulating valve 4, the positive pressure gas and the sucked mixed gas are discharged from an exhaust port of the ejector 8 and are sent into a torch system through a torch port interface 7 to carry out sample gas treatment, the structure is provided with a one-way valve between the energy storage vacuum tank 5 and the ejector to ensure that high-pressure gas at the position of the torch port interface 7 cannot enter a sample gas pipeline, namely, the energy storage vacuum tank 5 is connected to the sample gas source interface 9 and the sample gas on-line detection analysis system of the sample gas source interface 9, the damage to low-pressure devices and the influence on sample gas system pipelines caused by high-pressure gas are effectively avoided, the energy storage vacuum tank 5 is additionally arranged in the structure for storing vacuum, when the jet pump of the ejector 8 cannot generate vacuum because of instantaneous ultrahigh back pressure, the vacuum in the energy storage vacuum tank 8 can still provide vacuum for the system in a short time, after the ultrahigh back pressure is reduced, the ejector 8 continuously supplements vacuum for the vacuum tank, the pressure of the pipeline from the sample gas source interface 9 and the energy storage vacuum tank 8 cannot change in the process, the mixed gas of the sample gas and nitrogen of the sample gas source interface 9 is subjected to constant-pressure and quantitative extraction and suction, the air pressure and the flow cannot change, and the influence on the sample gas on-line analysis system is further effectively avoided.
As shown in fig. 1, a vacuum flowmeter 10 is arranged between the sample gas source interface 9 and the vacuum pressure regulating valve 4.
The vacuum flowmeter 10 has flow display and regulation functions, and when in initial use, the sample gas supply is turned off, the flow knob is adjusted to set the flow in the range of the maximum suction flow of the ejector 8, and then the sample gas supply is turned on, and the flow display is kept unchanged.
As shown in fig. 1, the secondary pressure regulating valve 3 is a pressure regulating valve with a diffusing function.
The secondary pressure regulating valve 3 can release pressure when the pressure in the pipeline reaches more than a preset value, so that the stability of the pressure in the pipeline is further ensured.
As shown in fig. 1, a first pressure gauge 11 is arranged between the nitrogen source interface and the primary pressure regulating valve 2, a second pressure gauge 12 is arranged between the primary pressure regulating valve 2 and the secondary pressure regulating valve 3, a third pressure gauge 13 is arranged on the sample gas source interface 9, a fourth pressure gauge 14 is arranged between the vacuum flow meter 10 and the vacuum pressure regulating valve 4, and a fourth pressure gauge 14 is arranged between the output end of the injector 8 and the flare opening interface 7.
The first pressure gauge 11, the second pressure gauge 12, the third pressure gauge 13, the fourth pressure gauge 14 and the fourth pressure gauge 14 are used for displaying the pipeline of the whole pressure stabilizing system, so that the operation staff can observe and control conveniently, and the control precision and safety are improved.
Claims (4)
1. A sample gas analysis pressure stabilizing system, characterized in that: including nitrogen source interface (1), primary air-vent valve (2) that connect gradually, secondary air-vent valve (3), vacuum air-vent valve (4), energy storage vacuum tank (5) and check valve (6) that connect gradually with primary air-vent valve (2), simultaneously with nitrogen source interface (1), sprayer (8) that check valve (6) and flare opening interface (7) are connected, sample air source interface (9) that set up between secondary air-vent valve (3) and vacuum air-vent valve (4), nitrogen source interface (1) are connected with sprayer (8) inlet and primary air-vent valve (2) input respectively with the help of the tee bend, check valve (6) output and sprayer (8) low pressure inlet are connected, flare opening interface (7) input and sprayer (8) output are connected, sample air source interface (9) are connected with secondary air-vent valve (3) and vacuum air-vent valve (4) respectively with the help of the tee bend.
2. The sample gas analysis pressure stabilizing system according to claim 1, wherein: a vacuum flowmeter (10) is arranged between the sample gas source interface (9) and the vacuum pressure regulating valve (4).
3. The sample gas analysis pressure stabilizing system according to claim 1, wherein: the secondary pressure regulating valve (3) is a pressure regulating valve with a diffusing function.
4. The sample gas analysis pressure stabilizing system according to claim 2, wherein: be provided with first manometer (11) between nitrogen gas source interface (1) and primary air-vent valve (2), be provided with second manometer (12) between primary air-vent valve (2) and secondary air-vent valve (3), be provided with third manometer (13) on sample air source interface (9), be provided with fourth manometer (14) between vacuum flowmeter (10) and vacuum air-vent valve (4), be provided with fifth manometer (15) between sprayer (8) output and torch mouth interface (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321771406.0U CN220436243U (en) | 2023-07-06 | 2023-07-06 | Sample gas analysis steady voltage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321771406.0U CN220436243U (en) | 2023-07-06 | 2023-07-06 | Sample gas analysis steady voltage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220436243U true CN220436243U (en) | 2024-02-02 |
Family
ID=89690657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321771406.0U Active CN220436243U (en) | 2023-07-06 | 2023-07-06 | Sample gas analysis steady voltage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220436243U (en) |
-
2023
- 2023-07-06 CN CN202321771406.0U patent/CN220436243U/en active Active
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