CN209841751U - Online real-time detection device for water dew point of gas pipeline - Google Patents
Online real-time detection device for water dew point of gas pipeline Download PDFInfo
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- CN209841751U CN209841751U CN201920182527.9U CN201920182527U CN209841751U CN 209841751 U CN209841751 U CN 209841751U CN 201920182527 U CN201920182527 U CN 201920182527U CN 209841751 U CN209841751 U CN 209841751U
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Abstract
The utility model discloses a gas transmission pipeline water dew point online real-time detection device, the device includes: the air inlet end of the water dew point analyzer is connected with the upper end of the sampling probe through a stainless steel pipe, and the air outlet end of the water dew point analyzer is connected with the air inlet end of the second flow control valve through a stainless steel pipe; the filter is arranged on a stainless steel pipe between the sampling probe and the water dew point analyzer, and the bottom end of the filter is connected with the first flow control valve through the stainless steel pipe; a first stop valve provided on the stainless steel pipe between the sampling probe and the filter; and the pressure regulating valve is arranged on the stainless steel pipe between the water dew point analyzer and the second flow control valve. The utility model has the advantages that: the automatic on-line detection function of the gas components at the water dew point of the gas pipeline is realized; the timeliness and the accuracy of pipeline water dew point detection are improved, the running safety of pipelines and equipment is ensured, and the personnel load is reduced.
Description
Technical Field
The utility model relates to a natural gas detection technical field particularly, relates to a gas pipeline water dew point online real-time detection device.
Background
In the process of transporting natural gas long-distance pipelines, the change of temperature and pressure can cause the change of the dew point of natural gas water, and liquid water can be separated out when the dew point is exceeded, so that the corrosion damage of the pipelines, compressors and other equipment is caused. Therefore, real-time monitoring of the natural gas water dew point is particularly important. In the past, the water dew point monitoring of the natural gas pipeline is generally carried out off-line detection in a laboratory in a station after the gas sampling of the pipeline, the sampling operation of the high-pressure pipeline has high requirements on people and inevitable operation risks, and the method has the problems of large personnel load, complex process, long time consumption, insufficient real-time property and the like, so that the accuracy of gas pipeline trade handing-over is not high finally.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide an online real-time detection device for water dew point of gas transmission pipeline, which realizes the online detection of water dew point of natural gas, and realizes the rapid, automatic and accurate detection of water dew point value of gas transmission pipeline.
The utility model provides a gas transmission pipeline water dew point online real-time detection device, the device includes:
the air inlet end of the water dew point analyzer is connected with the upper end of the sampling probe through a stainless steel pipe, and the air outlet end of the water dew point analyzer is connected with the air inlet end of the second flow control valve through a stainless steel pipe;
the filter is arranged on a stainless steel pipe between the sampling probe and the water dew point analyzer, and the bottom end of the filter is connected with the first flow control valve through the stainless steel pipe;
a first stop valve provided on the stainless steel pipe between the sampling probe and the filter;
and the pressure regulating valve is arranged on the stainless steel pipe between the water dew point analyzer and the second flow control valve.
As a further improvement of the utility model, the lower end of the sampling probe is inserted into the gas transmission pipeline.
As a further improvement of the utility model, the first stop valve with be equipped with the second stop valve on the nonrust steel pipe between the filter.
As a further improvement of the present invention, the filter and stainless steel tube between the first flow control valves is provided with a tee joint, the inlet end of the tee joint is connected with the filter, and the first outlet end of the tee joint is connected with the first flow control valves.
As a further improvement of the utility model, the gas-liquid separator further comprises a third stop valve which is connected with the second gas outlet end of the tee joint through a stainless steel pipe.
As a further improvement of the utility model, the filter with be equipped with first check valve on the nonrust steel pipe between the tee bend inlet end.
As a further improvement, the water dew point analyzer is connected with the explosion-proof connecting box through a first cable.
As a further improvement of the utility model, the explosion-proof connecting box is connected with the control system through a second cable.
As a further improvement, the utility model also comprises a second check valve, the air inlet end of which is connected with the air outlet end of the second flow control valve, the air outlet end of the second check valve is connected with the air inlet end of the fourth stop valve.
As a further improvement of the utility model, the end of giving vent to anger of fourth stop valve is connected with stainless steel pipe and is led to safe region.
The utility model has the advantages that: the automatic on-line detection function of the gas components at the water dew point of the gas pipeline is realized; the timeliness and the accuracy of pipeline water dew point detection are improved, the running safety of pipelines and equipment is ensured, and the personnel load is reduced.
Drawings
Fig. 1 is a schematic structural view of an online real-time detection device for water dew point of a gas pipeline according to an embodiment of the present invention;
fig. 2 is a flow chart for detecting the water dew point value by using the gas pipeline water dew point online real-time detection device provided by the embodiment of the utility model.
In the figure, the position of the upper end of the main shaft,
1. a sampling probe; 2. a first shut-off valve; 3. a stainless steel tube; 4. a second stop valve; 5. a filter; 6. a first check valve; 7. a tee joint; 8. a first flow control valve; 9. a third stop valve; 10. a water dew point analyzer; 11. a pressure regulating valve; 12. a second flow control valve; 13. a second one-way valve; 14. a fourth stop valve; 15. a first cable; 16. a second cable; 17. an explosion-proof junction box; 18. and (5) controlling the system.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
As shown in FIG. 1, the embodiment of the utility model provides a gas transmission pipeline water dew point on-line real-time detection device, the device includes:
the air inlet end of the water dew point analyzer 10 is connected with the upper end of the sampling probe 1 through a stainless steel pipe 3, and the air outlet end of the water dew point analyzer 10 is connected with the air inlet end of a second flow control valve 12 through the stainless steel pipe 3;
the filter 5 is arranged on the stainless steel pipe 3 between the sampling probe 1 and the water dew point analyzer 10, and the bottom end of the filter 5 is connected with the first flow control valve 8 through the stainless steel pipe 3;
a first stop valve 2 provided on the stainless steel pipe 3 between the sampling probe 1 and the filter 5;
and a pressure regulating valve 11 provided on the stainless steel pipe 3 between the water dew point analyzer 10 and the second flow rate control valve 12.
Further, the lower end of the sampling probe 1 is inserted into the gas transmission pipeline.
The sampling probe 1 is communicated with a gas transmission pipeline, a gas sample is obtained and is transmitted to the water dew point analyzer 10, the gas is detected and analyzed after the gas flow in the water dew point analyzer 10 is stable for 2 minutes, and the obtained detection result is transmitted to the control system 18. The gas whose flow rate is stable and the gas whose flow rate is stable pass through the first flow control valve 8 and the second flow control valve 12, respectively, and are discharged to a safe area through the stainless steel pipe 3. Wherein the flow rate of the gas flowing through the first flow control valve 8 is 2 to 3 times the flow rate of the gas flowing through the second flow control valve 12. The pressure of the gas flowing through the water dew point analyzer 10 is monitored in real time by the pressure regulating valve 11 during the entire detection process, and the pressure of the gas flowing through the water dew point analyzer 10 is adjusted if necessary. Before entering the water dew point analyzer 10, the gas sample obtained by the sampling probe 1 needs to be filtered by the filter 5 before being delivered to the water dew point analyzer 10. Considering the outdoor environment, all the stainless steel pipes 3 in the whole gas transmission pipeline water dew point online real-time detection device are subjected to electric heat tracing treatment according to the temperature of the actual external environment in the whole detection process.
Further, a second stop valve 4 is arranged on the stainless steel pipe 3 between the first stop valve 2 and the filter 5. When the first stop valve 2 is in the fully open state, the flow rate of the gas flowing into the water dew point analyzer 10 can be controlled by controlling the opening degree of the second stop valve 4, so that the gas flow rate in the water dew point analyzer 10 is prevented from suddenly decreasing or suddenly increasing due to improper manual control.
Furthermore, a tee joint 7 is arranged on the stainless steel pipe 3 between the filter 5 and the first flow control valve 8, the air inlet end of the tee joint 7 is connected with the filter 5, and the first air outlet end of the tee joint 7 is connected with the first flow control valve 8.
Further, the gas-liquid separator also comprises a third stop valve 9 which is connected with a second gas outlet end of the tee joint 7 through the stainless steel pipe 3.
The gas flowing through the tee joint 7 is divided into two branches, one branch gas flows through the first flow control valve 8 and is discharged to a safety region through the stainless steel pipe 3, and the other branch gas flows through the third stop valve 9 and is discharged to the safety region through the stainless steel pipe 3. When the first flow control valve 8 is out of order and needs to be repaired or when the flow rate of the gas flowing through the first flow control valve 8 is excessively large and exceeds the range, the third stop valve 9 is opened to discharge the gas through the third stop valve 9, thereby realizing the repair of the first flow control valve 8 or reducing the load of the first flow control valve 8.
Furthermore, a first one-way valve 6 is arranged on the stainless steel pipe 3 between the filter 5 and the air inlet end of the tee joint 7. The gas flowing through the filter 5 can then be introduced into the three-way valve 7 by opening the first non-return valve 6.
Further, the water dew point analyzer 10 is connected to an explosion-proof connection box 17 through a first cable 15.
Further, the explosion-proof connection box 17 is connected with the control system 18 through a second cable 16.
The detection results of the water dew point analyzer 10 are transmitted to the control system 18 via the first cable 15 and the second cable 16 in this order. The explosion-proof connecting box 17 can ensure the safety of the whole transmission process and can not generate the phenomena of electric leakage or lightning stroke.
Further, the air inlet end of the second check valve 13 is connected with the air outlet end of the second flow control valve 12, and the air outlet end of the second check valve 13 is connected with the air inlet end of the fourth stop valve 14.
Further, the gas outlet end of the fourth cut-off valve 14 is connected to the stainless steel pipe 3 and is led to a safety area.
The gas detected by the water dew point analyzer 10 is discharged to a safe area through the stainless steel pipe 3 sequentially passing through the second flow control valve 12, the second check valve 13 and the fourth stop valve 14. Wherein the second flow control valve 12 is used to control and monitor the gas flow in the water dew point analyzer 10.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a gas transmission pipeline water dew point online real-time detection device which characterized in that includes:
the air inlet end of the water dew point analyzer (10) is connected with the upper end of the sampling probe (1) through a stainless steel pipe (3), and the air outlet end of the water dew point analyzer (10) is connected with the air inlet end of the second flow control valve (12) through the stainless steel pipe (3);
the filter (5) is arranged on the stainless steel pipe (3) between the sampling probe (1) and the water dew point analyzer (10), and the bottom end of the filter (5) is connected with the first flow control valve (8) through the stainless steel pipe (3);
a first shut-off valve (2) provided on the stainless steel pipe (3) between the sampling probe (1) and the filter (5);
and the pressure regulating valve (11) is arranged on the stainless steel pipe (3) between the water dew point analyzer (10) and the second flow control valve (12).
2. The on-line real-time detection device for the water dew point of the gas transmission pipeline according to claim 1, wherein the lower end of the sampling probe (1) is inserted into the gas transmission pipeline.
3. The on-line real-time detection device for the water dew point of the gas transmission pipeline according to claim 1, wherein a second stop valve (4) is arranged on the stainless steel pipe (3) between the first stop valve (2) and the filter (5).
4. The online real-time detection device for the water dew point of the gas transmission pipeline according to claim 1, wherein a tee joint (7) is arranged on the stainless steel pipe (3) between the filter (5) and the first flow control valve (8), the gas inlet end of the tee joint (7) is connected with the filter (5), and the first gas outlet end of the tee joint (7) is connected with the first flow control valve (8).
5. The on-line real-time detection device for the water dew point of the gas transmission pipeline according to claim 4, further comprising a third stop valve (9) connected with the second gas outlet end of the tee joint (7) through a stainless steel pipe (3).
6. The on-line real-time detection device for the water dew point of the gas transmission pipeline according to claim 4, wherein a first check valve (6) is arranged on the stainless steel pipe (3) between the filter (5) and the air inlet end of the tee joint (7).
7. The on-line real-time detection device for the water dew point of the gas transmission pipeline according to claim 1, wherein the water dew point analyzer (10) is connected with an explosion-proof connecting box (17) through a first cable (15).
8. The on-line real-time detection device for the water dew point of the gas transmission pipeline according to claim 7, wherein the explosion-proof connection box (17) is connected with a control system (18) through a second cable (16).
9. The online real-time detection device for the water dew point of the gas transmission pipeline according to claim 1, further comprising a second check valve (13), wherein the gas inlet end of the second check valve (13) is connected with the gas outlet end of the second flow control valve (12), and the gas outlet end of the second check valve (13) is connected with the gas inlet end of a fourth stop valve (14).
10. The online real-time detection device for the water dew point of the gas transmission pipeline according to claim 9, wherein the gas outlet end of the fourth stop valve (14) is connected with the stainless steel pipe (3) and led to a safe area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920182527.9U CN209841751U (en) | 2019-02-01 | 2019-02-01 | Online real-time detection device for water dew point of gas pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920182527.9U CN209841751U (en) | 2019-02-01 | 2019-02-01 | Online real-time detection device for water dew point of gas pipeline |
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| CN209841751U true CN209841751U (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799263A (en) * | 2019-02-01 | 2019-05-24 | 中国石油天然气集团公司 | A kind of gas pipeline water dew point on-line real-time measuremen device |
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2019
- 2019-02-01 CN CN201920182527.9U patent/CN209841751U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799263A (en) * | 2019-02-01 | 2019-05-24 | 中国石油天然气集团公司 | A kind of gas pipeline water dew point on-line real-time measuremen device |
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