CN109900860A - A kind of gas pipeline hydrogen sulfide real-time analysis method - Google Patents
A kind of gas pipeline hydrogen sulfide real-time analysis method Download PDFInfo
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- CN109900860A CN109900860A CN201910104384.4A CN201910104384A CN109900860A CN 109900860 A CN109900860 A CN 109900860A CN 201910104384 A CN201910104384 A CN 201910104384A CN 109900860 A CN109900860 A CN 109900860A
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Abstract
The invention discloses a kind of gas pipeline hydrogen sulfide real-time analysis methods, comprising: starting H2S analyzer；Close all valves；Setting starting H2S analyzer parameter；The pressure value of valve on range air pipe is set；Valve is opened, zero gas is injected, carries out H2S analyzer Zero calibration；Valve is opened, range gas is injected, carries out H2S analyzer range designation；The pressure value of valve on sampling probe and pressure regulator is set；Open the manually-operated gate on sample air pipe；The pneumatic operated valve on sample air pipe is opened, sample gas is injected；H2S analyzer analyzes sample gas, and output analysis result is simultaneously uploaded to station control system, closes pneumatic operated valve；All valves and H are closed after completing all analyses2S analyzer.The invention has the benefit that gas pipeline H can be realized2The automatic on-line of S gas component is analyzed, and gas pipeline H is improved2Accuracy, the timeliness of S content detection make gas pipeline gas component on-line analysis more tend to functionization, reduce personnel's load.
Description
Technical field
The present invention relates to pipe-line system technical field, in particular to a kind of gas pipeline hydrogen sulfide side of analysis in real time
Method.
Background technique
During conduit running, due to being related to needing the more demanding of component to group with third-party transaction measurement
Divide and carries out sampling analysis.Conventional pipelines needs are sampled from pipeline, off-line analysis after sampling, then by the component information hand after analysis
It is dynamic to be entered into system to realize.This method can not automatic on-line carry out component analysis, that there are personnel's loads is larger, process is complicated,
It takes a long time, the problems such as real-time is inadequate, the accuracy for eventually leading to gas pipeline component is not high.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of gas pipeline hydrogen sulfide real-time analysis method, it is real
When analysis speed faster, the degree of automation is higher, and accuracy in detection is higher.
The present invention provides a kind of gas pipeline hydrogen sulfide real-time analysis methods, comprising:
Step 1, start H2S analyzer；
Step 2, all valves of the real-time analytical equipment of gas pipeline hydrogen sulfide are closed；
Step 3, the H is set2The analysis parameter of S analyzer, including temperature, analysis duration and analysis time interval；
Step 4, the pressure value of the third pressure reducing valve on the second pressure reducing valve and zero point air pipe on range air pipe is set；
Step 5, the 6th shut-off valve on zero point air pipe is opened, H is injected2Zero gas in S zero point gas cylinder carries out H2S
The Zero calibration of analyzer closes the 6th shut-off valve after completing Zero calibration；
Step 6, the 5th shut-off valve on range air pipe is opened, H is injected2Range gas in S range gas cylinder carries out H2S
The range designation of analyzer closes the 5th shut-off valve after completing range designation；
Step 7, the H2After the calibration of S analyzer, the tune on the first pressure reducing valve and sample air pipe on sampling probe is set
The pressure value of depressor；
Step 8, the first shut-off valve, the second shut-off valve, check valve and the 4th shut-off valve on sample air pipe are opened；
Step 9, the pneumatic operated valve on sample air pipe is opened, described in the sample gas injection that the sampling probe takes out from gas pipeline
H2In S analyzer；
Step 10, the H2S analyzer analyzes sample gas, and output analysis result is simultaneously uploaded to station control system, closes the gas
Dynamic valve；
Step 11, step 9-10 is repeated until completing all analyses, close first shut-off valve, second cut-off
Valve, the check valve, the 4th shut-off valve and the H2S analyzer.
It is further improved as of the invention, in step 9, sample gas passes through first shut-off valve and second shut-off valve
Between diaphragm type filter and filter successively filter after enter the H2In S analyzer.
It further include opening the row being connected with the membranous type filter after step 11 as further improvement of the invention
Part residual air in sample air pipe is drained into safety zone by dirty valve.
It further include opening and the H after step 11 as further improvement of the invention2The connected safety of S analyzer
Diffusion valve drains into the part residual air in sample air pipe in atmosphere.
It is improved as of the invention further, in step 4, passes through the third pressure gauge at second pressure reducing valve both ends and the
Pressure value on four pressure gauge real-time monitoring range air pipes.
It is improved as of the invention further, in step 4, passes through the 5th pressure gauge at third pressure reducing valve both ends and the
Pressure value on six pressure gauge real-time monitoring zero point air pipes.
It is further improved as of the invention, in step 7, passes through the first pressure gauge at the pressure regulator both ends and second and press
Power table, the pressure value on real-time monitoring sample air pipe.
It is further improved as of the invention, in step 7, the pressure signal of the pressure regulator is sent into anti-by the first cable
Station control system is uploaded to after quick-fried junction box.
It is further improved as of the invention, in step 10, the H2The analysis result of S analyzer is sent by the second cable
Station control system is uploaded to after entering explosion-proof wiring box.
It is further improved as of the invention, in step 9, the valve signal of the pneumatic operated valve is sent into anti-by the 4th cable
Station control system is uploaded to after quick-fried junction box.
The invention has the benefit that
Gas pipeline H can be achieved2The automatic on-line of S gas component is analyzed, and gas pipeline H is improved2S content detection it is accurate
Property, timeliness, so that gas pipeline gas component on-line analysis is more tended to functionization, reduce personnel's load.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of gas pipeline hydrogen sulfide real-time analysis method described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the real-time analytical equipment of gas pipeline hydrogen sulfide used by the embodiment of the present invention.
In figure,
1, pipe nipple is welded；2, sampling probe；3, the first pressure reducing valve；4, the first shut-off valve；5, diaphragm type filter；6, stainless
Steel pipe；7, blowdown valve；8, filter；9, the first threeway；10, the second shut-off valve；11, pneumatic operated valve；12, check valve；13, the 2nd 3
It is logical；14, third shut-off valve；15, the 4th shut-off valve；16, third threeway；17, first pressure gauge；18, pressure regulator；19, the 4th 3
It is logical；20, second pressure gauge；21, the 5th threeway；22,H2S analyzer；23, Safety relief valve；24, the 6th threeway；25,H2S range
Gas cylinder；26, the second pressure reducing valve；27, third pressure gauge；28, the 4th pressure gauge；29, the 5th shut-off valve；30,H2S zero gas steel
Bottle；31, third pressure reducing valve；32, the 5th pressure gauge；33, the 6th pressure gauge；34, the 6th shut-off valve；35, the first cable；36,
Two cables；37, third cable；38, the 4th cable；39, explosion-proof wiring box.
Specific embodiment
The present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
As shown in Figure 1, a kind of gas pipeline hydrogen sulfide real-time analysis method of the embodiment of the present invention, comprising:
Step 1, start H2S analyzer 22.
Step 2, all valves of the real-time analytical equipment of gas pipeline hydrogen sulfide are closed.
Step 3, H is set2The analysis parameter of S analyzer 22, including temperature, analysis duration and analysis time interval.
Step 4, the pressure of the second pressure reducing valve 26 on range air pipe and the third pressure reducing valve 31 on zero point air pipe is set
Force value.
Further, by the third pressure gauge 27 and the 4th pressure gauge 28 at 26 both ends of the second pressure reducing valve, second is measured respectively
Pressure reducing valve 26 depressurizes the pressure value of front and back, the pressure value on real-time monitoring range air pipe.Pass through 31 both ends of third pressure reducing valve
5th pressure gauge 32 and the 6th pressure gauge 33 measure the pressure value of the decompression of third pressure reducing valve 31 front and back, real-time monitoring zero point respectively
Pressure value on air pipe.
Step 5, the 6th shut-off valve 34 on zero point air pipe is opened, H is injected2Zero gas in S zero point gas cylinder 30, into
Row H2The Zero calibration of S analyzer 22 closes the 6th shut-off valve 34 after completing Zero calibration.
Step 6, the 5th shut-off valve 29 on range air pipe is opened, H is injected2Range gas in S range gas cylinder 25, into
Row H2The range designation of S analyzer 22 closes the 5th shut-off valve 29 after completing range designation.
Step 7, H2After S analyzer 22 is demarcated, the tune on the first pressure reducing valve 3 and sample air pipe on sampling probe 2 is set
The pressure value of depressor 18.
Further, by the first pressure gauge 17 and second pressure gauge 20 at 18 both ends of pressure regulator, pressure regulator is measured respectively
Pressure value before and after 18 pressure regulation, the pressure value on real-time monitoring sample air pipe.
Further, the pressure signal of pressure regulator 18 is sent into after explosion-proof wiring box 39 by the first cable 35 is uploaded to station control
System, control system of standing can obtain the pressure signal of pressure regulator 18 in real time, to adjust in real time.
Step 8, the manually-operated gate on sample air pipe is successively opened, including the first shut-off valve 4, the second shut-off valve 10, unidirectional
Valve 12 and the 4th shut-off valve 15.
Step 9, the pneumatic operated valve 11 on sample air pipe is opened, the sample gas that sampling probe 2 takes out from gas pipeline injects H2S points
In analyzer 22.
Further, sample gas passes through the diaphragm type filter 5 and filter between the first shut-off valve 4 and the second shut-off valve 10
8 successively filter after enter H2In S analyzer 22.
Further, the valve signal of pneumatic operated valve 11 is sent into after explosion-proof wiring box 39 by the 4th cable 38 is uploaded to station control
System, control system of standing can obtain the valve signal of pneumatic operated valve 11 in real time, to adjust in real time.
Step 10, H2S analyzer 22 analyzes sample gas, and output analysis result is simultaneously uploaded to station control system, closes pneumatic operated valve 11.
Further, H2The analysis result of S analyzer 22 is uploaded to after being sent into explosion-proof wiring box 39 by the second cable 36
It stands control system, control system of standing can obtain the analysis result of sample gas in real time.
Step 11, step 9-10 is repeated until completing all analyses, close the first shut-off valve 4, the second shut-off valve 10, unidirectional
Valve 12, the 4th shut-off valve 15 and H2S analyzer 22.
Further, after the completion of to be analyzed, the blowdown valve 7 being connected with membranous type filter 5 is opened, by the portion in sample air pipe
Point residual air drains into safety zone.Opening and H2The connected Safety relief valve 23 of S analyzer 22, the part residual air in sample air pipe is arranged
Into atmosphere.
Gas pipeline hydrogen sulfide real-time analysis method of the invention is based on gas pipeline hydrogen sulfide shown in Fig. 2 and analyzes in real time
Device.It include: sampling probe 2, sample air pipe, range air pipe, zero point air pipe, H2S analyzer 22 and station control system.Sampling
Probe 2 is connected by weld nipple 1 with gas pipeline, and 2 top of sampling probe is connected with the first pressure reducing valve 3.Sample air pipe enters
Mouth is connected with the first pressure reducing valve 3, the outlet of sample air pipe and H2The sample gas inlet of S analyzer 22 is connected.On sample air pipe successively
The first shut-off valve 4, diaphragm type filter 5, filter 8, the second shut-off valve 10, pneumatic operated valve 11, check valve the 12, the 4th is arranged to end
Valve 15 and pressure regulator 18.Preferably, pressure regulator 18 is with having heaters.The entrance and H of range air pipe225 phase of S range gas cylinder
Even, the outlet of range air pipe and H2The range gas entrance of S analyzer 22 is connected, and the second decompression is set gradually on range air pipe
Valve 26 and the 5th shut-off valve 29.The entrance and H of zero point air pipe2S zero point gas cylinder 30 is connected, the outlet of zero point air pipe and H2S
The zero gas entrance of analyzer 22 is connected, and third pressure reducing valve 31 and the 6th shut-off valve 34 are set gradually on zero point air pipe.Pneumatically
Valve 11, pressure regulator 18 and H2S analyzer 22 is respectively connected to station control system, and control system of standing is PLC or DCS etc..
The setting of first pressure reducing valve 3, it is ensured that the sample atmospheric pressure taken out out of sampling probe 2 guarantees whole in tolerance band
The safe operation of a analytic process.Sample gas of the setting of first shut-off valve 4 for taking out sampling probe unidirectionally flows into sample tracheae
Road is filtered.Diaphragm type filter 5 is used due to increasing by one layer of diaphragm in the filter so that filter effect is more preferable simultaneously
Longer life expectancy.Diaphragm type filter 5 and filter 8 this double filtration are set, the sample gas of taking-up is filtered into impurities removal twice, it is ensured that into
Enter H2Sample gas in S analyzer is pure.The setting of second shut-off valve 10, check valve 12 and the 4th shut-off valve 15 will be for after filtering
The unidirectional feed line of sample gas in carry out pressure regulation.Preferably, on the one hand pressure regulator 18 ensures to enter H with having heaters2S analysis
The pressure of the sample gas of instrument within the allowable range, is on the other hand also ensured that and is sent after the sample gas in pipeline is sufficiently heated to proper temperature
Enter H2It is analyzed in S analyzer.The setting of second pressure reducing valve 26 ensures to enter H2The pressure of range gas in S analyzer 22 exists
In allowed band.The setting of 5th shut-off valve 29 is for unidirectionally flowing into H for the range gas in H2S range gas cylinder 252S analyzer
The calibration of range gas is carried out in 22.The setting of third pressure reducing valve 31 ensures to enter H2The pressure of zero gas in S analyzer 22 is permitting
Perhaps in range.The setting of 6th shut-off valve 34 is for by H2Zero gas in S zero point gas cylinder 30 unidirectionally flows into H2S analyzer 22
Middle progress zero gas calibration.
Diaphragm type filter 5 is connected by stainless steel tube 6 with blowdown valve 7.Pipe between filter 8 and the second shut-off valve 10
The first threeway 9 is arranged in road, and the second threeway 13 is arranged on the pipeline between check valve 12 and the 4th shut-off valve 15.First threeway 9
First end be connected with filter 8, the second end of the first threeway 9 is connected with the second shut-off valve 10, the first end of the second threeway 13
It is connected with check valve 12, the second end of the second threeway 13 is connected with the 4th shut-off valve 15, the third end and the two or three of the first threeway 9
Logical 13 third end is connected, and the pipeline between the third end of the first threeway 9 and the third end of the second threeway 13 is equipped with third
Shut-off valve 14.Check valve 12 prevents adverse current, is easy to appear failure, and third shut-off valve 14 is arranged primarily to preventing list
To 12 failure of valve, easy access.
Third threeway 16, pressure regulator 18 and H are set on the pipeline between the 4th shut-off valve 15 and pressure regulator 182S analyzer
4th threeway 19 is set on the pipeline between 22.The first end of third threeway 16 is connected with shut-off valve 15, and the of third threeway 16
Two ends are connected with pressure regulator 18, and the third of third threeway 16 is terminated with first pressure gauge 17.The first end and tune of 4th threeway 19
Depressor 18 is connected, and the third of the 4th threeway 19 is terminated with second pressure gauge 20.4th threeway 19 and H2Pipe between S analyzer 22
The 5th threeway 21 is arranged in road, and the 6th threeway 24 is arranged on the pipeline between the 5th threeway 21 and atmosphere.The of 5th threeway 21
One end is connected with the second end of the 4th threeway 19, the second end and H of the 5th threeway 212The sample gas inlet of S analyzer 22 is connected, the
The first end of six threeways 24 is connected with the third end of the 5th threeway 21, and the second end of the 6th threeway 24 is connected to atmosphere, the 6th threeway
24 third end and H222 exhaust outlet of S analyzer is connected, H2The exhaust outlet of S analyzer 22 is connected to atmosphere, the third of the 5th threeway 21
Pipeline between end and the first end of the 6th threeway 24 is equipped with Safety relief valve 23.The both ends of second pressure reducing valve 26 are respectively equipped with
Third pressure gauge 27 and the 4th pressure gauge 28.The both ends of third pressure reducing valve 31 are respectively equipped with the 5th pressure gauge 32 and the 6th pressure gauge
33.Pressure regulator 18 is connected by the first cable 35 with explosion-proof wiring box 39, H2S analyzer 22 is connect by the second cable 36 with explosion-proof
Line case 39 is connected, and pneumatic operated valve 11 is connected by the 4th cable 38 with explosion-proof wiring box 39, and explosion-proof wiring box 39 passes through third cable
37 are connected with station control system.
Sample air pipe, range air pipe and zero point air pipe are all made of stainless steel tube 6.Further, it is contemplated that outdoor ring
Electric heating companion is arranged according to environment temperature etc. in border, stainless steel tube 6.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of gas pipeline hydrogen sulfide real-time analysis method characterized by comprising
Step 1, start H2S analyzer (22)；
Step 2, all valves of the real-time analytical equipment of gas pipeline hydrogen sulfide are closed；
Step 3, the H is set2The analysis parameter of S analyzer (22), including temperature, analysis duration and analysis time interval；
Step 4, the pressure of the third pressure reducing valve (31) on the second pressure reducing valve (26) and zero point air pipe on range air pipe is set
Force value；
Step 5, the 6th shut-off valve (34) on zero point air pipe is opened, H is injected2Zero gas in S zero point gas cylinder (30), into
Row H2The Zero calibration of S analyzer (22) closes the 6th shut-off valve (34) after completing Zero calibration；
Step 6, the 5th shut-off valve (29) on range air pipe is opened, H is injected2Range gas in S range gas cylinder (25), into
Row H2The range designation of S analyzer (22) closes the 5th shut-off valve (29) after completing range designation；
Step 7, the H2After S analyzer (22) calibration, on the first pressure reducing valve (3) and sample air pipe in setting sampling probe (2)
Pressure regulator (18) pressure value；
Step 8, the first shut-off valve (4), the second shut-off valve (10), check valve (12) and the 4th section on sample air pipe are successively opened
Only valve (15)；
Step 9, the pneumatic operated valve (11) on sample air pipe is opened, the sample gas injection that the sampling probe (2) is taken out from gas pipeline
The H2In S analyzer (22)；
Step 10, the H2S analyzer (22) analyzes sample gas, and output analysis result is simultaneously uploaded to station control system, closes described pneumatic
Valve (11)；
Step 11, step 9-10 is repeated until completing all analyses, close first shut-off valve (4), second shut-off valve
(10), the check valve (12), the 4th shut-off valve (15) and the H2S analyzer (22).
2. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that in step 9, sample gas is logical
Cross diaphragm type filter (5) between first shut-off valve (4) and second shut-off valve (10) and filter (8) successively mistake
Enter the H after filter2In S analyzer (22).
3. gas pipeline hydrogen sulfide real-time analysis method according to claim 2, which is characterized in that also wrapped after step 11
It includes, opens the blowdown valve (7) being connected with the membranous type filter (5), the part residual air in sample air pipe is drained into safety zone.
4. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that also wrapped after step 11
It includes, opens and the H2The connected Safety relief valve (23) of S analyzer (22), drains into atmosphere for the part residual air in sample air pipe
In.
5. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that in step 4, pass through institute
State the pressure on the third pressure gauge (27) and the 4th pressure gauge (28) real-time monitoring range air pipe at the second pressure reducing valve (26) both ends
Force value.
6. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that in step 4, pass through institute
State the pressure on the 5th pressure gauge (32) and the 6th pressure gauge (33) real-time monitoring zero point air pipe at third pressure reducing valve (31) both ends
Force value.
7. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that in step 7, pass through institute
State the first pressure gauge (17) and second pressure gauge (20) at pressure regulator (18) both ends, the pressure value on real-time monitoring sample air pipe.
8. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that in step 7, the tune
The pressure signal of depressor (18) is sent into after explosion-proof wiring box (39) by the first cable (35) is uploaded to station control system.
9. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that described in step 10
H2The analysis result of S analyzer (22) is sent into after explosion-proof wiring box (39) by the second cable (36) is uploaded to station control system.
10. gas pipeline hydrogen sulfide real-time analysis method according to claim 1, which is characterized in that described in step 9
The valve signal of pneumatic operated valve (11) is sent into after explosion-proof wiring box (39) by the 4th cable (38) is uploaded to station control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910104384.4A CN109900860A (en) | 2019-02-01 | 2019-02-01 | A kind of gas pipeline hydrogen sulfide real-time analysis method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910104384.4A CN109900860A (en) | 2019-02-01 | 2019-02-01 | A kind of gas pipeline hydrogen sulfide real-time analysis method |
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Family
ID=66944691
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Application publication date: 20190618 |