CN108561757A - Parameter setting method of gas leakage detection device - Google Patents
Parameter setting method of gas leakage detection device Download PDFInfo
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- CN108561757A CN108561757A CN201810223747.1A CN201810223747A CN108561757A CN 108561757 A CN108561757 A CN 108561757A CN 201810223747 A CN201810223747 A CN 201810223747A CN 108561757 A CN108561757 A CN 108561757A
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005070 sampling Methods 0.000 claims description 16
- 238000012935 Averaging Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 29
- 239000000567 combustion gas Substances 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a parameter setting method of a gas leakage detection device, wherein in the step A, when the output end of the detection device is not deflated, the air pressure difference PA between an air inlet channel and an air outlet channel is convenient to correct the actual detection error of a pressure difference sensor through PB-PA when a proportional parameter K is calculated subsequently, in the step B2, a main control module needs to control a main channel electromagnetic valve to be switched on and off successively, if a detected pipeline leaks gas and a bypass channel is not arranged to perform gas supplement output on the air outlet channel, the air pressure difference between the air inlet channel and the air outlet channel is larger and larger along with time, the detection result of the pressure difference sensor cannot correspond to the flow L of a standard leak hole, the bypass channel plays a role of supplementing the gas leakage of the output end, so that the pressure difference PB detected by the pressure difference sensor can correspond to the flow L of the standard leak hole subsequently, and the parameter setting method has prominent substantive characteristics and remarkable progress.
Description
Technical field
The present invention relates to a kind of parameter setting methods of gas leak detection apparatus.
Background technology
Currently, existing gas heater, gas-cooker mainly detect gas pipeline by the way that combustion gas gas sensor is arranged
Whether leaked combustion gas outside, sometimes fuel gas buring it is insufficient, burning after exhaust gas discharge can also influence combustion gas gas not in time
The detection of sensor, false triggering happen occasionally.
Therefore, how to overcome above-mentioned defect, it has also become those skilled in the art's important topic urgently to be resolved hurrily.
Invention content
The invention overcomes the shortcomings of the above-mentioned technology and provides a kind of parameter setting methods of gas leak detection apparatus.
To achieve the above object, present invention employs following technical proposals：
A kind of parameter setting method of gas leak detection apparatus, the device include main control module 1 and connected in sequence
Inlet channel 2, main channel solenoid valve 3 and the outlet passageway 4 for external tested pipeline, the inlet channel 2 are logical with outlet
It is communicated with bypass channel 5 between road 4 and the differential pressure pickup 6 detected for differential pressure of atmospheric pressure is connected with by other pipeline, it is described
Bypass channel 5 is that pore is equipped in capillary or bypass channel 5 in order to limit flow, the control of main channel solenoid valve 3
Signal input part, differential pressure pickup 6 detect signal output end and are electrically connected respectively with the main control module 1, the parameter setting method
Including having the following steps：
Step B1, the input terminal of the present apparatus is connected into air source, the output end of the present apparatus is sealed up or connected keeps one's end up
Then pipeline opens air source, main control module 1 controls main channel solenoid valve 3 and connects, and main control module 1 passes through pressure difference after a period of time
Sensor 6 detects the differential pressure of atmospheric pressure between the inlet channel 2 and outlet passageway 4 and is denoted as PA, closes air source after the completion；
Step B2, the replacement of present apparatus output end is connected as referance leak, the flow L of the referance leak is it is known that then
Air source is opened, main control module 1 controls main channel solenoid valve 3 and connects, and makes source gas respectively by main channel solenoid valve 3, bypass
Channel 5 exports backward, and the main control module 1 controls main channel solenoid valve 3 and closes after a period of time so that source gas only passes through
Bypass channel 5 exports backward, and then the main control module 1 detects the inlet channel 2 and outlet passageway by differential pressure pickup 6
Differential pressure of atmospheric pressure between 4 is simultaneously denoted as PB, finally hasThe ratio for obtaining outflow and differential pressure of atmospheric pressure is joined
Number K, closes air source after the completion.
A kind of parameter setting method of gas leak detection apparatus as described above is carrying out air pressure pressure in step bl is determined
When the data sampling of poor PA, data sampling is averaging afterwards several times, to obtain differential pressure of atmospheric pressure PA average values, in step B2,
When carrying out the data sampling of differential pressure of atmospheric pressure PB, data sampling is averaging afterwards several times, to obtain differential pressure of atmospheric pressure PB average values, then
Have
A kind of parameter setting method of gas leak detection apparatus as described above, in a device, before the inlet channel 2
End is equipped with front end solenoid valve 7, and 7 control signal input of front end solenoid valve is electrically connected with the main control module 1, the parameter
Setting method further includes having step B3, and when without using air source, the main control module 1 controls the front end solenoid valve 7 and closes.
Compared with prior art, the beneficial effects of the invention are as follows：
1, this case device is equipped with inlet channel and outlet passageway, in this way, convenient for the present apparatus is connected to air source and measured tube
Leakage inspection is carried out between road, is such as connected on the fuel gas pipeline of gas heater/gas-cooker, and application is convenient；This case
For main channel solenoid valve for being connected when being tested pipeline normal use gas, differential pressure pickup is logical with outlet for detecting inlet channel
Differential pressure of atmospheric pressure P (X) between road wants detection device output end to keep one's end up when institute in the parameter setting method of this case in step A
The differential pressure of atmospheric pressure PA between inlet channel and outlet passageway is stated, convenient for being corrected by PB-PA when follow-up calculating scale parameter K
The actually detected error of differential pressure pickup, and in step B2, the main control module needs priority control main channel solenoid valve to connect
Switching is opened, if tested pipeline carries out gas supplement output without bypass channel is arranged in gas leakage to outlet passageway
Words, the differential pressure of atmospheric pressure between inlet channel and outlet passageway will be increasing at any time, at this moment the detection knot of differential pressure pickup
Fruit cannot be corresponding with the flow L of referance leak, and this case bypass channel role is mended to the leakage of output end gas
It fills, in order to subsequently enable differential pressure pickup detect differential pressure of atmospheric pressure PB and referance leak between inlet channel and outlet passageway
Flow L correspond to, with substantive distinguishing features outstanding and significant progress.
2, in step bl is determined, when carrying out the data sampling of differential pressure of atmospheric pressure PA, data sampling is averaging afterwards several times, with
To differential pressure of atmospheric pressure PA average values, in step B2, when carrying out the data sampling of differential pressure of atmospheric pressure PB, data sampling is asked afterwards several times
It is average, to obtain differential pressure of atmospheric pressure PB average values, then haveIt is conducive to reduce pressure difference biography
The detection error of sensor.
3, in a device, the inlet channel front end is equipped with front end solenoid valve, the front end solenoid valve control signal input
End is electrically connected with the main control module, and the parameter setting method further includes having step B3, when without using air source, the master control
Module controls the front end solenoid valve and closes, in order to practical safer control.
Description of the drawings
Fig. 1 is the structural schematic diagram of gas leak detection apparatus in this case.
Specific implementation mode
Feature of present invention and other correlated characteristics are described in further detail by the following examples, in order to the same industry
The understanding of technical staff：
As shown in Figure 1, a kind of parameter setting method of gas leak detection apparatus, which includes 1 He of main control module
Inlet channel 2, main channel solenoid valve 3 and the outlet passageway 4 for external tested pipeline connected in sequence, the air inlet are logical
It is communicated with bypass channel 5 between road 2 and outlet passageway 4 and the pressure difference detected for differential pressure of atmospheric pressure is connected with by other pipeline and passes
Sensor 6, the bypass channel 5 are that pore is equipped in capillary or bypass channel 5 in order to limit flow, the main channel electricity
3 control signal input of magnet valve, differential pressure pickup 6 detect signal output end and are electrically connected respectively with the main control module 1, the parameter
Setting method includes having the following steps：
Step B1, the input terminal of the present apparatus is connected into air source, the output end of the present apparatus is sealed up or connected keeps one's end up
Then pipeline opens air source, main control module 1 controls main channel solenoid valve 3 and connects, and main control module 1 passes through pressure difference after a period of time
Sensor 6 detects the differential pressure of atmospheric pressure between the inlet channel 2 and outlet passageway 4 and is denoted as PA, closes air source after the completion；
Step B2, the replacement of present apparatus output end is connected as referance leak, the flow L of the referance leak is it is known that then
Air source is opened, main control module 1 controls main channel solenoid valve 3 and connects, and makes source gas respectively by main channel solenoid valve 3, bypass
Channel 5 exports backward, and the main control module 1 controls main channel solenoid valve 3 and closes after a period of time so that source gas only passes through
Bypass channel 5 exports backward, and then the main control module 1 detects the inlet channel 2 and outlet passageway by differential pressure pickup 6
Differential pressure of atmospheric pressure between 4 is simultaneously denoted as PB, finally hasThe ratio for obtaining outflow and differential pressure of atmospheric pressure is joined
Number K, closes air source after the completion.
As described above, this case device is equipped with inlet channel 2 and outlet passageway 4, in this way, convenient for the present apparatus is connected to air source
Leakage inspection is carried out between tested pipeline, is such as connected on the fuel gas pipeline of gas heater/gas-cooker, application side
Just；For this case main channel solenoid valve 3 for being connected when being tested pipeline normal use gas, differential pressure pickup 6 is logical for detecting air inlet
Differential pressure of atmospheric pressure P (X) between road 2 and outlet passageway 4 wants detection device to export in the parameter setting method of this case in step A
Differential pressure of atmospheric pressure PA of end when keeping one's end up between the inlet channel 2 and outlet passageway 4, when convenient for follow-up calculating scale parameter K
The actually detected error of differential pressure pickup 6 is corrected by PB-PA, and in step B2, the main control module 1 needs successively to control
Solenoid valve 3 on-off in main channel processed, if being tested pipeline in gas leakage without bypass channel 5 is arranged to outlet passageway 4
If carrying out gas supplement output, the differential pressure of atmospheric pressure between inlet channel 2 and outlet passageway 4 will be increasing at any time, this
When differential pressure pickup 6 testing result cannot be corresponding with the flow L of referance leak, 5 role of this case bypass channel is
The leakage of output end gas is supplemented, in order to subsequently make differential pressure pickup 6 detect inlet channel 2 and outlet passageway 4 it
Between differential pressure of atmospheric pressure PB can be corresponding with the flow L of referance leak, with substantive distinguishing features outstanding and significant progress.
As described above, the setting of this case parameter is carrying out external tested pipeline convenient for this follow-up gas leak detection apparatus
When Leakage inspection, differential pressure of atmospheric pressure P when being disconnected by measuring main channel solenoid valve 3 between inlet channel 2 and outlet passageway 4
(X) tested piping flow L (X) is calculated, there is L (X)=K*P (X).
As described above, when it is implemented, in step bl is determined, when carrying out the data sampling of differential pressure of atmospheric pressure PA, data sampling
It is averaging afterwards several times, to obtain differential pressure of atmospheric pressure PA average values, in step B2, in the data sampling for carrying out differential pressure of atmospheric pressure PB
When, data sampling is averaging afterwards several times, to obtain differential pressure of atmospheric pressure PB average values, is then had
It is conducive to the detection error for reducing differential pressure pickup 6.
As described above, when it is implemented, in a device, 2 front end of the inlet channel is equipped with front end solenoid valve 7, before described
End 7 control signal input of solenoid valve is electrically connected with the main control module 1, and the parameter setting method further includes having step B3,
When without using air source, the main control module 1 controls the front end solenoid valve 7 and closes, in order to practical safer control.
As described above, this case protection is a kind of parameter setting method of gas leak detection apparatus, all and this case phase
Same or similar technical solution should all be shown as falling into the protection domain of this case.
Claims (3)
1. a kind of parameter setting method of gas leak detection apparatus, it is characterised in that the device include main control module (1) and
Inlet channel (2), main channel solenoid valve (3) and the outlet passageway (4) for external tested pipeline connected in sequence, it is described
It is communicated with bypass channel (5) between inlet channel (2) and outlet passageway (4) and is connected with for differential pressure of atmospheric pressure by other pipeline
The differential pressure pickup (6) of detection, the bypass channel (5) are that pore is equipped in capillary or bypass channel (5) in order to limit
Flow processed, main channel solenoid valve (3) control signal input, differential pressure pickup (6) detection signal output end respectively with institute
Main control module (1) electrical connection is stated, which includes having the following steps：
Step B1, the input terminal of the present apparatus is connected into air source, the output end of the present apparatus is sealed up or connected the pipeline that keeps one's end up,
Then air source is opened, main control module (1) controls main channel solenoid valve (3) and connects, and main control module (1) passes through pressure difference after a period of time
Sensor (6) detects the differential pressure of atmospheric pressure between the inlet channel (2) and outlet passageway (4) and is denoted as PA, closes gas after the completion
Source；
Step B2, the replacement of present apparatus output end is connected as referance leak, then the flow L of the referance leak is it is known that open
Air source, main control module (1) control main channel solenoid valve (3) and connect, and make source gas respectively by main channel solenoid valve (3), side
Paths (5) export backward, and main control module (1) the control main channel solenoid valve (3) is closed after a period of time so that air source gas
Body is only exported by bypass channel (5) backward, and then the main control module (1) detects the air inlet by differential pressure pickup (6)
Differential pressure of atmospheric pressure between channel (2) and outlet passageway (4) is simultaneously denoted as PB, finally hasObtain outflow
With the scale parameter K of differential pressure of atmospheric pressure, air source is closed after the completion.
2. a kind of parameter setting method of gas leak detection apparatus according to claim 1, it is characterised in that in step
In B1, when carrying out the data sampling of differential pressure of atmospheric pressure PA, data sampling is averaging afterwards several times, average to obtain differential pressure of atmospheric pressure PA
Value, in step B2, when carrying out the data sampling of differential pressure of atmospheric pressure PB, data sampling is averaging afterwards several times, to obtain air pressure
Pressure difference PB average values, then have
3. a kind of parameter setting method of gas leak detection apparatus according to claim 1 or 2, it is characterised in that filling
In setting, inlet channel (2) front end is equipped with front end solenoid valve (7), front end solenoid valve (7) control signal input and institute
Main control module (1) electrical connection is stated, the parameter setting method further includes having step B3, when without using air source, the master control mould
Block (1) controls the front end solenoid valve (7) and closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223747.1A CN108561757B (en) | 2018-03-19 | 2018-03-19 | Parameter setting method of gas leakage detection device |
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|---|---|---|---|
| CN201810223747.1A CN108561757B (en) | 2018-03-19 | 2018-03-19 | Parameter setting method of gas leakage detection device |
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| CN108561757B CN108561757B (en) | 2020-01-10 |
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| CN106764458A (en) * | 2016-12-28 | 2017-05-31 | 核动力运行研究所 | Flange leakage monitoring device and high energy pipe network flange leakage monitoring regulator control system |
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| CN107218516A (en) * | 2017-07-19 | 2017-09-29 | 中国水利水电科学研究院 | A kind of water delivery in pipeline system multiple spot minute leakage detection means and method |
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| JPS56137240A (en) * | 1980-03-31 | 1981-10-27 | Yokogawa Hokushin Electric Corp | Detecting system of water-leaking location |
| CN1273342A (en) * | 1999-05-10 | 2000-11-15 | 河北省河间市飞尔达自动化仪表有限公司 | Method and device for monitoring and locating leakage of fluid delivering pipeline |
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Effective date of registration: 20200820 Address after: 528400 No. 42, South 1, Industrial Avenue, Xiaolan Town, Guangdong, Zhongshan Patentee after: Changqing thermal energy technology (Zhongshan) Co., Ltd Address before: 528400, No. 42, South Avenue, Xiaolan Town, Guangdong, Zhongshan Patentee before: CHANT HEAT ENERGY SCIENCE & TECHNOLOGY (ZHONGSHAN) Co.,Ltd. |