CN206723841U - A kind of on-line automatic blowdown apparatus of gas pipeline yard - Google Patents
A kind of on-line automatic blowdown apparatus of gas pipeline yard Download PDFInfo
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- CN206723841U CN206723841U CN201720317349.7U CN201720317349U CN206723841U CN 206723841 U CN206723841 U CN 206723841U CN 201720317349 U CN201720317349 U CN 201720317349U CN 206723841 U CN206723841 U CN 206723841U
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- 239000007788 liquid Substances 0.000 claims abstract description 124
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000010865 sewage Substances 0.000 claims description 42
- 230000001105 regulatory effect Effects 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
A kind of on-line automatic blowdown apparatus of gas pipeline yard is the utility model is related to, including：Filter, its bottom are connected with liquid collecting bag, and liquid collecting, which is wrapped, sets two fluid level transmitters；Blowdown pipeline, its one end and liquid collecting Bao Lian, if the first safety cut-off valve, the first technique ball valve, Liquid level adjusting valve, the second technique ball valve, pressure transmitter, the second safety cut-off valve；Blowdown remittance tank, itself and the blowdown pipeline other end connect, if the 3rd fluid level transmitter；Instrument junction box, it connects with three fluid level transmitters, two safety cut-off valves, Liquid level adjusting valve, pressure transmitter.The beneficial effects of the utility model are：Ensure the safety of yard operation, reduce operational risk and be advantageous to energy-saving and emission-reduction, and it can be monitored by SCADA system.
Description
Technical Field
The utility model relates to an online automatic waste fitting discharging of gas transmission pipeline station.
Background
For a sewage system in a gas transmission pipeline station, a traditional device is that a ball valve and a sewage valve are arranged on a sewage branch, and the device can only realize off-line manual sewage drainage, namely when a plurality of branch devices do not operate simultaneously (when a standby branch exists), firstly, the standby branch is opened, an upstream ball valve and a downstream ball valve which need to drain the sewage branch are closed, then, an emptying valve is opened, natural gas pressure is emptied to be below safe operation pressure, then, the emptying valve is closed, and finally, the ball valve and the sewage valve are opened for sewage drainage.
The disadvantages of this off-line waste fitting are:
1. the equipment on the current branch can be drained only after the standby branch is started;
2. the discharge pressure cannot be controlled, so that the downstream equipment is easily damaged, and even operators are injured;
3. the sewage discharge automation degree is low, the manual sewage discharge operation steps are complex, and the workload and the misoperation probability of operators are increased.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists in the above-mentioned problem, the utility model provides an online automatic waste fitting discharging of gas transmission pipeline station guarantees the safety of station operation, reduces the operation risk and be favorable to energy saving and emission reduction to can monitor it through the SCADA system.
In order to achieve the above object, the utility model provides an online automatic waste fitting discharging of gas transmission pipeline station yard, the device includes:
the bottom of the filter is connected with a liquid collecting bag, and a first liquid level transmitter and a second liquid level transmitter are arranged on the liquid collecting bag;
one end of the sewage discharge pipeline is connected with the liquid collecting bag, a first process ball valve is arranged on the sewage discharge pipeline, a first safety cut-off valve is arranged at the upstream of the first process ball valve, a liquid level regulating valve is arranged at the downstream of the first process ball valve, a second process ball valve is arranged at the downstream of the liquid level regulating valve, a second safety cut-off valve is arranged at the downstream of the second process ball valve, and a pressure transmitter is arranged on the sewage discharge pipeline between the second process ball valve and the second safety cut-off valve;
the blowdown collection tank is connected with the other end of the blowdown pipeline, and a third liquid level transmitter is arranged on the blowdown collection tank;
an instrument junction box connected with the first liquid level transmitter, the second liquid level transmitter, the first safety shut-off valve, the liquid level regulating valve, the pressure transmitter, the second safety shut-off valve and the third liquid level transmitter, the first liquid level transmitter is connected into the instrument junction box through a first instrument cable, the second liquid level transmitter is connected into the instrument junction box through a second instrument cable, the first safety cut-off valve is connected with the instrument junction box through a third instrument cable, the liquid level regulating valve is connected with the instrument junction box through a fourth instrument cable, pressure transmitter passes through the access of fifth instrument cable instrument junction box, the second safety shut-off valve passes through the access of sixth instrument cable instrument junction box, third level transmitter passes through the access of seventh instrument cable instrument junction box.
As a further improvement, the first liquid level transmitter and the second liquid level transmitter are connected through a flange on the side of the liquid level transmitter and the liquid collecting bag.
As a further improvement of the present invention, the first liquid level transmitter and the second liquid level transmitter are magnetostrictive liquid level transmitters.
As a further improvement, the first liquid level transmitter with the liquid level control valve is connected, the second liquid level transmitter with first safety shut-off valve is connected, the third liquid level transmitter with pressure transmitter with the second safety shut-off valve is connected.
As a further improvement, the liquid level regulating valve and the installation spacing of the first process ball valve are not less than 600 mm.
As a further improvement, the liquid level regulating valve is an axial flow type liquid level regulating valve.
As a further improvement of the present invention, the first process ball valve and the second process ball valve are cut-off ball valves.
As a further improvement, the liquid level regulating valve is connected with the first actuating mechanism.
As a further improvement, the first safety stop valve is connected with a second actuating mechanism.
As a further improvement, the second safety cut-off valve is connected with a third actuating mechanism.
The utility model has the advantages that:
the safety of station operation is ensured, the operation risk is reduced, energy conservation and emission reduction are facilitated, and the station can be monitored through the SCADA system.
Drawings
Fig. 1 is a schematic structural view of the on-line automatic sewage draining device of the gas pipeline station of the present invention.
In the figure:
1. a filter; 2. a first level transmitter; 3. a second liquid level transmitter; 4. a third level transmitter; 5. a sewage draining branch; 6. a first safety shut-off valve; 7. a first process ball valve; 8. a liquid level regulating valve; 9. a second process ball valve; 10. a second safety shut-off valve; 11. a pressure transmitter; 12. a blowdown tank; 13. an instrument junction box; 14. collecting liquid; 15. a first instrument cable; 16. a second instrument cable; 17. a third instrument cable; 18. a fourth instrument cable; 19. a fifth instrument cable; 20. a sixth instrument cable; 21. and a seventh instrument cable.
Detailed Description
As shown in fig. 1, the embodiment of the utility model provides an online automatic waste fitting discharging of gas transmission pipeline station, the device includes: the device comprises a filter 1, a sewage pipeline 5, a sewage collection tank 12 and an instrument junction box 13.
The bottom of the filter 1 is connected with a liquid collecting bag 14, and a first liquid level transmitter 2 and a second liquid level transmitter 3 are arranged on the liquid collecting bag 14. The first liquid level transmitter 2 and the second liquid level transmitter 3 are both connected with the liquid collecting bag 14 through flanges on the side surfaces of the liquid level transmitters.
5 one end of sewage pipes is connected with a liquid collecting bag 14, a first process ball valve 7 is arranged on the sewage pipes 5, a first safety shut-off valve 6 is arranged at the upstream of the first process ball valve 7, a liquid level regulating valve 8 is arranged at the downstream of the first process ball valve 7, a second process ball valve 9 is arranged at the downstream of the liquid level regulating valve 8, a second safety shut-off valve 10 is arranged at the downstream of the second process ball valve 9, and a pressure transmitter 11 is arranged on the sewage pipes 5 between the second process ball valve 9 and the second safety shut-off valve 10.
The other end of the sewage discharge gathering tank 12 is connected with the other end of the sewage discharge pipeline 5, and the third liquid level transmitter 4 is arranged on the sewage discharge gathering tank 12.
Instrument junction box 13 and first level transmitter 2, second level transmitter 3, first safety shut-off valve 6, level control valve 8, pressure transmitter 11, second safety shut-off valve 10 and third level transmitter 4 are connected, first level transmitter 2 inserts instrument junction box 13 through first instrument cable 15, second level transmitter 3 inserts instrument junction box 13 through second instrument cable 16, first safety shut-off valve 6 inserts instrument junction box 13 through third instrument cable 17, level control valve 8 inserts instrument junction box 13 through fourth instrument cable 18, pressure transmitter 11 inserts instrument junction box 13 through fifth instrument cable 19, second safety shut-off valve 10 inserts instrument junction box 13 through sixth instrument cable 20, third level transmitter 4 inserts instrument junction box 13 through seventh instrument cable 21.
In order to ensure the interlocking control of the liquid level regulating valve 8, the first liquid level transmitter 2 is connected with the liquid level regulating valve 8; in order to ensure the interlocking control of the second liquid level transmitter 3 on the first safety shut-off valve 6, the second liquid level transmitter 3 is connected with the first safety shut-off valve 6; in order to ensure the interlocking control of the third liquid level transmitter 4 on the second safety shut-off valve 10, the third liquid level transmitter 4 is connected with the second safety shut-off valve 10; in order to ensure the interlocking control of the pressure transmitter 11 on the second safety shut-off valve 10, the pressure transmitter 11 is connected with the second safety shut-off valve 10.
Wherein,
the first liquid level transmitter 2 and the second liquid level transmitter 3 are both magnetostrictive liquid level transmitters, and the transmitters are installed through side flanges. The first liquid level transmitter 2 is used for controlling the liquid level regulating valve 8 in an interlocking manner and setting a high alarm limit value and a low alarm limit value; the second liquid level transmitter 3 is used for interlocking control of the first safety shut-off valve 6 and setting a low alarm limit value.
The liquid level regulating valve 8 adopts an axial flow type liquid level regulating valve, the caliber of the axial flow type liquid level regulating valve is 1 inch, a first actuating mechanism is arranged, the type is fault safety type, and the accident state is FC. The installation distance between the liquid level regulating valve 8 and the upstream first process ball valve 7 (cutoff ball valve) is not less than 600 mm. In order to realize the automatic sewage discharge function, the adjusting function of the liquid level adjusting valve 8 effectively reduces the flow rate of the sewage discharge and controls the sewage discharge pressure to be lower than the operating pressure of the sewage discharge tank 12.
In order to prevent the overflow accident caused by the ultrahigh liquid level of the sewage tank 12 during the sewage draining operation, a third liquid level transmitter 4 is arranged on the sewage tank 12.
In order to prevent the liquid level regulating valve 8 from losing efficacy (when the liquid level regulating valve can not be closed) to cause gas to leak to a sewage draining device, a first safety shut-off valve 6 is arranged at the upstream of the liquid level regulating valve 8. The first safety shut-off valve 6 is provided with a second actuating mechanism, the type is failure safety type, and the accident state is FC.
In order to prevent the blow-down tank 12 from being over-pressurized due to the inability to control the discharge pressure after the level regulating valve 8 fails, a second safety shut-off valve 10 is provided on the manifold 22 near the inlet of the blow-down tank 12. The second safety cut-off valve 10 is provided with a third actuating mechanism, the type is failure safety type, and the accident state is FC.
The utility model discloses an online automatic waste fitting discharging is not only limited to the online blowdown control of blowdown pipeline all the way, can set up many filters, has 2 album liquid packages below every filter, sets up first liquid level changer 2, second liquid level changer 3, first safety cut-off valve 6, first technology ball valve 7, liquid level control valve 8, second technology ball valve 9 constitution on every way of blowdown pipeline. The multi-channel sewage discharge pipeline is connected to a sewage discharge header, a pressure transmitter 11 and a second safety shut-off valve 10 are arranged at the position close to the sewage discharge tank on the sewage discharge header, and a third liquid level transmitter 4 is arranged on the sewage discharge tank 12.
The equipment in the on-line automatic sewage discharge device of the utility model is designed to be installed in the open air, the protection grade is not lower than IP65, the explosion-proof grade is not lower than EXdIIBT4, and the requirements of open-air environment and on-site explosion-proof are completely met; the equipment of the online pollution discharge device is automatically controlled by the SCADA system, and can also be switched to a remote manual control mode and a local manual control mode, so that the subsequent management and control are facilitated.
The utility model discloses utilize liquid level control valve's regulatory function effectively to reduce the blowdown velocity of flow to control blowdown pressure is below the operating pressure of blowdown jar. In addition, set up a safety shut-off valve at blowdown jar entry pipeline, set up a pressure transmitter before the safety shut-off valve, set up liquid level transmitter on the blowdown jar, interlock liquid level and pressure and safety shut-off valve, when pressure reaches the design pressure of blowdown jar or when the blowdown jar liquid level reaches the setting value, the safety shut-off valve of chain closure blowdown pipe entry is reported to the police, can prevent because the emergence of blowdown jar superpressure or the overflow accident that discharge pressure and flow lead to can't be controlled after the liquid level control valve became invalid.
Meanwhile, the online automatic sewage discharge is carried out according to the height of the liquid level in the filtering equipment (liquid collecting bag). When the liquid level in the filtering equipment reaches a high liquid level value, the liquid level regulating valve is automatically opened, and the liquid is discharged to a downstream closed sewage tank; when the liquid level in the filter reaches a low level value, the liquid level regulating valve is automatically closed. Meanwhile, in order to prevent the liquid level regulating valve from losing efficacy (when the liquid level regulating valve can not be closed) to cause gas to leak to the downstream of the sewage draining device, a safety cut-off valve is arranged at the upstream of the liquid level regulating valve. When the liquid level in the liquid collection bag reaches a low alarm value, the safety shut-off valve is triggered to be closed, so that the liquid level is prevented from being further reduced.
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. An online automatic blowdown device of a gas transmission pipeline station is characterized by comprising:
the bottom of the filter (1) is connected with a liquid collecting bag (14), and a first liquid level transmitter (2) and a second liquid level transmitter (3) are arranged on the liquid collecting bag (14);
one end of the sewage draining pipeline (5) is connected with the liquid collecting bag (14), a first process ball valve (7) is arranged on the sewage draining pipeline (5), a first safety shut-off valve (6) is arranged at the upstream of the first process ball valve (7), a liquid level regulating valve (8) is arranged at the downstream of the first process ball valve (7), a second process ball valve (9) is arranged at the downstream of the liquid level regulating valve (8), a second safety shut-off valve (10) is arranged at the downstream of the second process ball valve (9), and a pressure transmitter (11) is arranged on the sewage draining pipeline (5) between the second process ball valve (9) and the second safety shut-off valve (10);
the blow-down collection tank (12) is connected with the other end of the blow-down pipeline (5), and a third liquid level transmitter (4) is arranged on the blow-down collection tank (12);
an instrument junction box (13) connected with the first liquid level transmitter (2), the second liquid level transmitter (3), the first safety shut-off valve (6), the liquid level regulating valve (8), the pressure transmitter (11), the second safety shut-off valve (10) and the third liquid level transmitter (4), the first liquid level transmitter (2) is connected to the instrument junction box (13) through a first instrument cable (15), the second liquid level transmitter (3) is connected to the instrument junction box (13) through a second instrument cable (16), the first safety shut-off valve (6) is connected to the instrument junction box (13) through a third instrument cable (17), the liquid level regulating valve (8) is connected to the instrument junction box (13) through a fourth instrument cable (18), the pressure transmitter (11) is connected to the instrument junction box (13) through a fifth instrument cable (19), the second safety shut-off valve (10) is connected into the instrument junction box (13) through a sixth instrument cable (20), and the third liquid level transmitter (4) is connected into the instrument junction box (13) through a seventh instrument cable (21).
2. The online automatic blowdown device of gas transmission pipeline station according to claim 1, wherein said first liquid level transmitter (2) and said second liquid level transmitter (3) are both connected to said liquid collecting bag (14) through flanges on the sides of the liquid level transmitters.
3. The online automatic blowdown device of the gas transmission pipeline station according to claim 1, wherein the first liquid level transmitter (2) and the second liquid level transmitter (3) are both magnetostrictive liquid level transmitters.
4. The online automatic blowdown device of gas transmission pipeline station according to claim 1, wherein said first level transmitter (2) is connected with said level regulating valve (8), said second level transmitter (3) is connected with said first safety shut-off valve (6), said third level transmitter (4) and said pressure transmitter (11) are connected with said second safety shut-off valve (10).
5. The online automatic blowdown device of the gas transmission pipeline station according to claim 1, wherein the installation distance between the liquid level regulating valve (8) and the first process ball valve (7) is not less than 600 mm.
6. The on-line automatic blowdown device for a gas transmission pipeline station according to claim 1, wherein the liquid level regulating valve (8) is an axial flow type liquid level regulating valve.
7. The on-line automatic blowdown device of gas transmission pipeline station according to claim 1, wherein said first process ball valve (7) and said second process ball valve (9) are both truncated ball valves.
8. The on-line automatic blowdown device for a gas transmission pipeline station according to claim 1, wherein the liquid level regulating valve (8) is connected with a first actuator.
9. The on-line automatic blowdown device for a gas transmission pipeline station according to claim 1, wherein the first safety shut-off valve (6) is connected with a second actuator.
10. The on-line automatic blowdown device for a gas transmission pipeline station according to claim 1, wherein the second safety shut-off valve (10) is connected with a third actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720317349.7U CN206723841U (en) | 2017-03-29 | 2017-03-29 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720317349.7U CN206723841U (en) | 2017-03-29 | 2017-03-29 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
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| Publication Number | Publication Date |
|---|---|
| CN206723841U true CN206723841U (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720317349.7U Active CN206723841U (en) | 2017-03-29 | 2017-03-29 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838618A (en) * | 2017-03-29 | 2017-06-13 | 中国石油天然气集团公司 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
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2017
- 2017-03-29 CN CN201720317349.7U patent/CN206723841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838618A (en) * | 2017-03-29 | 2017-06-13 | 中国石油天然气集团公司 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Yongzhi Inventor after: Nie Zhongwen Inventor after: Leng Xulin Inventor after: Liang Jun Inventor after: Zhang Shuyong Inventor after: Wang Yongji Inventor after: Wang Yong Inventor after: Fu Zhe Inventor before: Yu Yongzhi Inventor before: Nie Zhongwen Inventor before: Zhang Shuyong Inventor before: Wang Yongji Inventor before: Wang Yong Inventor before: Fu Zhe |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: China Petroleum Pipeline Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Co-patentee after: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Beijing Xicheng District six laying Kang Co-patentee before: China Petroleum Pipeline Engineering Co.,Ltd. Patentee before: China National Petroleum Corp. Co-patentee before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190916 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: China Petroleum Pipeline Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Co-patentee after: CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee before: China Petroleum Pipeline Engineering Co.,Ltd. Patentee before: CHINA NATIONAL PETROLEUM Corp. Co-patentee before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |