CN106759779B - A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard - Google Patents
A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard Download PDFInfo
- Publication number
- CN106759779B CN106759779B CN201710197569.5A CN201710197569A CN106759779B CN 106759779 B CN106759779 B CN 106759779B CN 201710197569 A CN201710197569 A CN 201710197569A CN 106759779 B CN106759779 B CN 106759779B
- Authority
- CN
- China
- Prior art keywords
- liquid level
- valve
- junction box
- transmitter
- instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007599 discharging Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 219
- 239000010865 sewage Substances 0.000 claims description 85
- 230000001105 regulatory effect Effects 0.000 claims description 40
- 238000005259 measurement Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 13
- 230000006872 improvement Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 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
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Control Of Fluid Pressure (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a kind of online blowdown apparatus applied to gas pipeline yard, comprising: an at least filter, filter lower section set an at least liquid collecting packet, and liquid collecting, which is wrapped, sets two fluid level transmitters；At least a blowdown branch, blowdown branch one end are connected with liquid collecting packet, and the blowdown branch other end is connected with header, and blowdown branch road successively sets the first safety cut-off valve, the first technique ball valve, Liquid level adjusting valve and the second technique ball valve；Blowdown drum, blowdown drum and header connect, and set a fluid level transmitter on blowdown drum；Header sets pressure transmitter and the second safety cut-off valve on header；Instrument junction box, instrument junction box and three fluid level transmitters, two safety cut-off valves, Liquid level adjusting valve and pressure transmitter connect.The present invention also provides a kind of online method for discharging pollution applied to gas pipeline yard.Beneficial effects of the present invention: guaranteeing the safety of yard operation, reduces operational risk and is beneficial to energy conservation emission reduction, can be monitored by SCADA system to it.
Description
Technical Field
The invention relates to the technical field of sewage disposal systems, pipeline systems and automatic control, in particular to an online sewage disposal device and an online sewage disposal method applied to a 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.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an online sewage discharging device and an online sewage discharging method applied to a gas pipeline station, which solve the problems in the prior art, ensure the safety of station operation, reduce operation risks, contribute to energy conservation and emission reduction, and can be monitored by an SCADA system.
The invention provides an on-line sewage discharging device applied to a gas transmission pipeline station, which comprises:
the liquid level sensor comprises at least one filter, wherein at least one liquid collecting bag is arranged below the filter, 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 branch is connected with the liquid collecting bag, the other end of the sewage discharge branch is connected with the manifold, and a first safety shut-off valve, a first process ball valve, a liquid level regulating valve and a second process ball valve are sequentially arranged on the sewage discharge branch;
the sewage discharge tank is connected with the header, and a third liquid level transmitter is arranged on the sewage discharge tank;
a pressure transmitter and a second safety shut-off valve are arranged at one end of the header, which is close to the sewage tank;
the instrument junction box, the instrument junction box with first liquid level transmitter the second liquid level transmitter first safety shut-off valve the liquid level control valve pressure transmitter the second safety shut-off valve with third liquid level transmitter links to each other.
As a further improvement of the invention, the online sewage discharge device comprises three filters, two liquid collecting bags are arranged below each filter, each liquid collecting bag is connected with one sewage discharge branch, and six sewage discharge branches are connected with the manifold.
As a further improvement of the present invention, the first liquid level transmitter is connected to the instrument junction box through a first instrument cable, the second liquid level transmitter is connected to the instrument junction box through a second instrument cable, the first safety shut-off valve is connected to the instrument junction box through a third instrument cable, the regulating valve is connected to the instrument junction box through a fourth instrument cable, the pressure transmitter is connected to the instrument junction box through a fifth instrument cable, the second safety shut-off valve is connected to the instrument junction box through a sixth instrument cable, and the third liquid level transmitter is connected to the instrument junction box through a seventh instrument cable.
As a further improvement of the present invention, the first liquid level transmitter is connected to the liquid level regulating valve, the second liquid level transmitter is connected to the first safety shut-off valve, the third liquid level transmitter is connected to the second safety shut-off valve, and the pressure transmitter is connected to the second safety shut-off valve.
The invention also provides an online pollution discharge method applied to the gas transmission pipeline station, which comprises the following steps:
step 1, the first liquid level transmitter measures the liquid level value of the liquid collection bag, judges the liquid level value and opens the liquid level regulating valve when the liquid level value is a high liquid level value; when the liquid level value is a low liquid level value, closing the liquid level regulating valve;
meanwhile, a first liquid level measuring signal of the first liquid level transmitter is connected into an instrument junction box, and an adjusting signal of the liquid level adjusting valve is connected into the instrument junction box;
step 2, the second liquid level transmitter measures the liquid level value of the liquid collecting bag, judges the liquid level value and closes the first safety shut-off valve when the liquid level value is a low liquid level value;
meanwhile, a second liquid level measuring signal of the second liquid level transmitter is connected into the instrument junction box, and a first cut-off signal of the first safety cut-off valve is connected into the instrument junction box;
step 3, the third liquid level transmitter measures the liquid level value of the sewage tank, judges the liquid level value and closes the second safety shut-off valve when the liquid level value is a high liquid level value;
meanwhile, a third liquid level measuring signal of the third liquid level transmitter is connected into the instrument junction box, and a second cut-off signal of the second safety cut-off valve is connected into the instrument junction box;
step 4, executing the steps 1-3 on each sewage discharge branch;
step 5, the pressure transmitter measures the pressure value of the sewage discharge branch, judges the pressure value, and closes the second safety cut-off valve when the pressure value is a high pressure value;
meanwhile, a pressure signal of the pressure transmitter is connected into the instrument junction box, and a third cut-off signal of the second safety cut-off valve is connected into the instrument junction box;
and 6, the instrument junction box receives the first liquid level measurement signal, the second liquid level measurement signal, the third liquid level measurement signal, the first cut-off signal and the adjusting signal on each sewage discharge branch, receives the second cut-off signal, the pressure signal and the third cut-off signal on the header, and transmits data to the SCADA system through a bus.
As a further improvement of the invention, in step 1, when the liquid level regulating valve fails and cannot be closed, a first safety shut-off valve arranged at the upstream of the liquid level regulating valve is closed.
As a further improvement of the present invention, in step 1, a first liquid level measurement signal of the first liquid level transmitter is connected to the instrument junction box through a first instrument cable, and a regulation signal of the liquid level regulating valve is connected to the instrument junction box through a fourth instrument cable.
As a further improvement of the present invention, in step 2, a second liquid level measurement signal of the second liquid level transmitter is connected to the meter junction box through a second meter cable, and a first cut-off signal of the first safety cut-off valve is connected to the meter junction box through a third meter cable.
As a further improvement of the present invention, in step 3, a third liquid level measurement signal of the third liquid level transmitter is connected to the instrument junction box through a seventh instrument cable, and a second cut-off signal of the second safety cut-off valve is connected to the instrument junction box through a sixth instrument cable.
As a further improvement of the present invention, in step 5, the pressure signal of the pressure transmitter is connected to the meter junction box through a fifth meter cable, and the third cut-off signal of the second safety cut-off valve is connected to the meter junction box through a sixth meter cable.
The invention has the beneficial effects that: the method solves the problems existing in the prior art, ensures the safety of station operation, reduces operation risks, is beneficial to energy conservation and emission reduction, and can monitor the station operation through an SCADA system.
Drawings
Fig. 1 is a schematic structural diagram of an online sewage draining device applied to a gas pipeline station according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an online sewage disposal process applied to a gas pipeline station according to an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
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. a seventh instrument cable; 22. and (7) collecting pipes.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Embodiment 1, as shown in fig. 1, an online sewage drainage device applied to a gas pipeline station according to an embodiment of the present invention includes three filters 1, a six-way sewage drainage branch 5, a header 22, an instrument junction box 13, and a sewage drainage tank 12.
Two liquid collecting bags 14 are arranged below each filter 1, six liquid collecting bags 14 are arranged in total, and a first liquid level transmitter 2 and a second liquid level transmitter 3 are arranged on each liquid collecting bag 14.
One end of each sewage branch 5 is connected with one liquid collecting bag 14, the other end of each sewage branch 5 is connected with a collecting pipe 22, and each sewage branch 5 is sequentially provided with a first safety shut-off valve 6, a first process ball valve 7, a liquid level regulating valve 8 and a second process ball valve 9.
The blow-down tank 12 is connected with a header 22, and the blow-down tank 12 is provided with a third liquid level transmitter 4.
The end of the header 22 close to the blow-down tank 12 is provided with a pressure transmitter 11 and a second safety shut-off valve 10.
The instrument junction box 13 is connected with the first liquid level transmitter 2, the second liquid level transmitter 3, the first safety cut-off valve 6, the liquid level regulating valve 8, the pressure transmitter 11, the second safety cut-off valve 10 and the third liquid level transmitter 4.
Wherein, first liquid level transmitter 2 inserts instrument junction box 13 through first instrument cable 15, second liquid 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 liquid level transmitter 4 inserts instrument junction box 13 through seventh instrument cable 21.
Further, 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 caliber of the sewage discharge pipeline of each sewage discharge branch 5 is 2 inches class600 #.
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, an actuating mechanism is required to be arranged, the type is fault safety, 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.
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.
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 cut-off valve 6 is provided with an 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 an actuating mechanism, the type is failure safety type, and the accident state is FC.
Embodiment 2, an online sewage discharging method applied to an online sewage discharging apparatus of a gas pipeline station, the method comprising the steps of:
step 1, a first liquid level transmitter 2 measures a liquid level value of a liquid collection bag 14, the first liquid level transmitter 2 judges the liquid level value, and when the liquid level value is a high level value, a liquid level regulating valve 8 is opened to perform starting triggering of automatic pollution discharge;
when the liquid level value is a low liquid level value, the liquid level regulating valve 8 is closed, and the stopping triggering of automatic sewage discharge is carried out;
when the liquid level regulating valve 8 fails and cannot be closed, the first safety shut-off valve 6 arranged at the upstream of the liquid level regulating valve 8 is triggered and closed.
At the same time, the first level measurement signal of the first level transmitter 2 is connected to the meter connection box 13 via a first meter cable 15, and the control signal of the level control valve 8 is connected to the meter connection box 13 via a fourth meter cable 18.
Step 2, the second liquid level transmitter 3 measures the liquid level value of the liquid collecting bag 14, the second liquid level transmitter 3 judges the liquid level value, and when the liquid level value is a low liquid level value, the first safety shut-off valve 6 is closed in a linkage manner to perform emergency shut-off of automatic pollution discharge;
meanwhile, a second liquid level measuring signal of the second liquid level transmitter 3 is connected to the instrument junction box 13 through a second instrument cable 16, and a first cut signal of the first safety cut valve 6 is connected to the instrument junction box 13 through a third instrument cable 17.
Step 3, the third liquid level transmitter 4 measures the liquid level value of the sewage tank 12, the third liquid level transmitter 4 judges the liquid level value, and when the liquid level value is a high liquid level value, the second safety shut-off valve 10 is triggered to be closed to perform emergency shut-off of automatic sewage discharge;
meanwhile, a third liquid level measurement signal of the third liquid level transmitter 4 is connected into the instrument junction box 13 through a seventh instrument cable 21, and a second cut-off signal of the second safety cut-off valve 10 is connected into the instrument junction box 13 through a sixth instrument cable 20.
And 4, executing the steps 1-3 by each blowdown branch 5.
Step 5, measuring a pressure value of the sewage discharge branch 5 by the pressure transmitter 11, judging the pressure value by the pressure transmitter 11, and closing the second safety shut-off valve 10 in a linkage manner to perform emergency shut-off of automatic sewage discharge when the pressure value is a high pressure value;
meanwhile, a pressure signal of the pressure transmitter 11 is connected to the instrument junction box 13 through a fifth instrument cable 19, and a third cut signal of the second safety cut valve 10 is connected to the instrument junction box 13 through a sixth instrument cable 20.
And 6, the instrument junction box 13 receives the first liquid level measurement signal, the second liquid level measurement signal, the third liquid level measurement signal, the first cut-off signal and the adjustment signal on each sewage discharge branch 5, and meanwhile, the instrument junction box 13 receives the second cut-off signal, the pressure signal and the third cut-off signal on the header 22 and transmits data to the SCADA system through the bus.
The invention can realize on-line automatic pollution discharge after adopting the on-line automatic pollution discharge method for the gas transmission station. The equipment in the online sewage discharge device 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 field 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 invention effectively reduces the flow rate of sewage discharge by utilizing the adjusting function of the liquid level adjusting valve and controls the sewage discharge pressure to be lower than the operating pressure of the sewage discharge tank. 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 on-line sewage draining device applied to a gas pipeline station, which is characterized by comprising:
the liquid level sensor comprises at least one filter (1), wherein at least one liquid collecting bag (14) is arranged below the filter (1), 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 discharge branch (5) is connected with the liquid collecting bag (14), the other end of the sewage discharge branch (5) is connected with the manifold (22), and the sewage discharge branch (5) is sequentially provided with a first safety shut-off valve (6), a first process ball valve (7), a liquid level regulating valve (8) and a second process ball valve (9);
the sewage draining tank (12), the sewage draining tank (12) is connected with the header (22), and a third liquid level transmitter (4) is arranged on the sewage draining tank (12);
a pressure transmitter (11) and a second safety shut-off valve (10) are arranged at one end of the header (22) close to the blowdown tank (12);
instrument junction box (13), instrument junction box (13) with first liquid level transmitter (2), second liquid level transmitter (3), first safety shut-off valve (6), liquid level control valve (8), pressure transmitter (11) second safety shut-off valve (10) with third liquid level transmitter (4) link to each other.
2. The online sewage draining device according to claim 1, wherein the online sewage draining device comprises three filters (1), two liquid collecting bags (14) are arranged below each filter (1), each liquid collecting bag (14) is connected with one sewage draining branch (5), and six sewage draining branches (5) are connected with the header (22).
3. An online waste fitting device according to claim 1, characterized in that the first level transmitter (2) is connected to the meter junction box (13) via a first meter cable (15), the second liquid level transmitter (3) is connected to the meter junction box (13) through a second meter cable (16), the first safety shut-off valve (6) is connected into the instrument junction box (13) through a third instrument cable (17), the liquid level regulating valve (8) is connected into the instrument junction box (13) through a fourth instrument cable (18), the pressure transmitter (11) is connected into 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).
4. The online waste fitting discharging device according to claim 1, wherein the first liquid level transmitter (2) is connected with the liquid level regulating valve (8), the second liquid level transmitter (3) is connected with the first safety cut-off valve (6), the third liquid level transmitter (4) is connected with the second safety cut-off valve (10), and the pressure transmitter (11) is connected with the second safety cut-off valve (10).
5. An on-line sewage disposal method for an on-line sewage disposal apparatus of a gas transmission pipeline station according to any one of claims 1 to 4, comprising the steps of:
step 1, the first liquid level transmitter (2) measures the liquid level value of the liquid collection bag (14), the first liquid level transmitter (2) judges the liquid level value, and when the liquid level value is a high liquid level value, the liquid level regulating valve (8) is opened; when the liquid level value is a low liquid level value, closing the liquid level regulating valve (8);
meanwhile, a first liquid level measuring signal of the first liquid level transmitter (2) is connected into an instrument junction box (13), and an adjusting signal of the liquid level adjusting valve (8) is connected into the instrument junction box (13);
step 2, the second liquid level transmitter (3) measures the liquid level value of the liquid collecting bag (14), the second liquid level transmitter (3) judges the liquid level value, and when the liquid level value is a low liquid level value, the first safety shut-off valve (6) is closed;
simultaneously, a second liquid level measuring signal of the second liquid level transmitter (3) is connected into the instrument junction box (13), and a first cut-off signal of the first safety cut-off valve (6) is connected into the instrument junction box (13);
step 3, the third liquid level transmitter (4) measures the liquid level value of the sewage tank (12), the third liquid level transmitter (4) judges the liquid level value, and when the liquid level value is a high liquid level value, the second safety cut-off valve (10) is closed;
meanwhile, a third liquid level measuring signal of the third liquid level transmitter (4) is connected into the instrument junction box (13), and a second cut-off signal of the second safety cut-off valve (10) is connected into the instrument junction box (13);
step 4, executing the steps 1-3 by each blowdown branch (5);
step 5, the pressure transmitter (11) measures the pressure value of the sewage discharge branch (5), the pressure transmitter (11) judges the pressure value, and when the pressure value is a high pressure value, the second safety shut-off valve (10) is closed;
meanwhile, a pressure signal of the pressure transmitter (11) is connected into the instrument junction box (13), and a third cut-off signal of the second safety cut-off valve (10) is connected into the instrument junction box (13);
and 6, the instrument junction box (13) receives the first liquid level measurement signal, the second liquid level measurement signal, the third liquid level measurement signal, the first cut-off signal and the adjusting signal on each sewage branch (5), and meanwhile, the instrument junction box (13) receives the second cut-off signal, the pressure signal and the third cut-off signal on the header (22) and transmits data to an SCADA system through a bus.
6. The online sewage draining method according to claim 5, wherein in step 1, when the liquid level regulating valve (8) fails and cannot be closed, the first safety shut-off valve (6) arranged upstream of the liquid level regulating valve (8) is closed.
7. The online sewage draining method according to claim 5, wherein in step 1, the first level measuring signal of the first level transmitter (2) is connected to the meter junction box (13) through a first meter cable (15), and the regulating signal of the level regulating valve (8) is connected to the meter junction box (13) through a fourth meter cable (18).
8. The online sewage draining method according to claim 5, wherein in step 2, the second liquid level measuring signal of the second liquid level transmitter (3) is connected to the meter junction box (13) through a second meter cable (16), and the first cut-off signal of the first safety cut-off valve (6) is connected to the meter junction box (13) through a third meter cable (17).
9. An online sewage draining method according to claim 5, characterized in that in step 3, a third liquid level measuring signal of the third liquid level transmitter (4) is connected to the meter junction box (13) through a seventh meter cable (21), and a second cut-off signal of the second safety cut-off valve (10) is connected to the meter junction box (13) through a sixth meter cable (20).
10. The online sewage draining method according to claim 5, wherein in step 5, the pressure signal of the pressure transmitter (11) is connected to the meter junction box (13) through a fifth meter cable (19), and the third cut-off signal of the second safety cut-off valve (10) is connected to the meter junction box (13) through a sixth meter cable (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197569.5A CN106759779B (en) | 2017-03-29 | 2017-03-29 | A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197569.5A CN106759779B (en) | 2017-03-29 | 2017-03-29 | A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106759779A CN106759779A (en) | 2017-05-31 |
| CN106759779B true CN106759779B (en) | 2019-01-29 |
Family
ID=58966941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710197569.5A Active CN106759779B (en) | 2017-03-29 | 2017-03-29 | A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106759779B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386595B (en) * | 2018-02-13 | 2019-08-30 | 东莞三江港口储罐有限公司 | A kind of emergency shutoff device for petrochemical industry storage sector |
| CN111187135B (en) * | 2020-01-16 | 2022-09-30 | 华亭煤业集团有限责任公司 | Prevent that gaseous phase feeding from taking liquid's safe collecting system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205299081U (en) * | 2015-12-16 | 2016-06-08 | 西安海智机电设备有限公司 | Recovery system of gas gathering station unloading natural gas |
| WO2016126113A2 (en) * | 2015-02-04 | 2016-08-11 | 플로우테크 주식회사 | Method for controlling detection of abnormality of pressure tank filling/exhaust system |
| CN105864639A (en) * | 2016-04-05 | 2016-08-17 | 中国石油集团工程设计有限责任公司 | Pipeline pressure-stabilizing system and method used after liquefied petroleum gas out-conveying pipeline stops conveying |
| CN105861025A (en) * | 2016-06-02 | 2016-08-17 | 中国石油天然气集团公司 | Recovery device and method for liquid-state light hydrocarbon in gas pipeline |
| CN205824610U (en) * | 2016-06-12 | 2016-12-21 | 江苏永钢集团有限公司 | Different pressure gas pipeline network interworking unit |
| CN106400839A (en) * | 2016-12-02 | 2017-02-15 | 中冶京诚工程技术有限公司 | Natural gas cabin of utility tunnel |
-
2017
- 2017-03-29 CN CN201710197569.5A patent/CN106759779B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016126113A2 (en) * | 2015-02-04 | 2016-08-11 | 플로우테크 주식회사 | Method for controlling detection of abnormality of pressure tank filling/exhaust system |
| CN205299081U (en) * | 2015-12-16 | 2016-06-08 | 西安海智机电设备有限公司 | Recovery system of gas gathering station unloading natural gas |
| CN105864639A (en) * | 2016-04-05 | 2016-08-17 | 中国石油集团工程设计有限责任公司 | Pipeline pressure-stabilizing system and method used after liquefied petroleum gas out-conveying pipeline stops conveying |
| CN105861025A (en) * | 2016-06-02 | 2016-08-17 | 中国石油天然气集团公司 | Recovery device and method for liquid-state light hydrocarbon in gas pipeline |
| CN205824610U (en) * | 2016-06-12 | 2016-12-21 | 江苏永钢集团有限公司 | Different pressure gas pipeline network interworking unit |
| CN106400839A (en) * | 2016-12-02 | 2017-02-15 | 中冶京诚工程技术有限公司 | Natural gas cabin of utility tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106759779A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106759779B (en) | A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard | |
| CN210400968U (en) | Gas collecting box gas taking device of transformer gas relay | |
| CA3110944A1 (en) | Automated sand separator discharge system | |
| CN209124553U (en) | Pipe cleaner receives system | |
| CN106989276B (en) | A kind of on-line automatic method for discharging pollution of gas pipeline yard | |
| CN106838618B (en) | Online automatic waste fitting discharging of gas transmission pipeline station yard | |
| CN206723841U (en) | A kind of on-line automatic blowdown apparatus of gas pipeline yard | |
| CN202756726U (en) | Gas-liquid linkage cut-off valve control system on oil-gas conveying pipeline | |
| CN107883056B (en) | Real-time online safety valve monitoring system and safety valve leakage monitoring method | |
| CN108413255A (en) | Pipe-line separation protection system and method | |
| CN106481983B (en) | Urban gate station Gas Pressure Regulating Equipment | |
| CN206830157U (en) | High pressure separator | |
| CN111720738A (en) | Chemical device waste liquid collecting system and collecting method | |
| CN215929226U (en) | Contain sulphur gas field pipeline emergency relief system | |
| CN210661535U (en) | Pressure relief device for dead oil section of liquid pipeline | |
| CN209956666U (en) | Oil depot oil leakage protection system | |
| CN209622143U (en) | A kind of autocontrol natural gas steam trap group | |
| CN109856187B (en) | Online real-time detection method for hydrocarbon dew point of gas pipeline | |
| CN208652139U (en) | Full-automatic gas shield dam fills row's control device | |
| CN207999644U (en) | A kind of steam drainage device | |
| CN208074597U (en) | Pipe-line buffer protection device and system | |
| CN210159239U (en) | Self-control type liquefied gas two-stage water cutting device | |
| CN210546842U (en) | Mechanical locking device for ball receiving and dispatching cylinder | |
| CN104775498A (en) | Method for controlling water environmental risks for petrochemical industries | |
| CN110185934A (en) | A kind of fluid conveying pipe network automatic monitored control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Nie Zhongwen Inventor after: Yu Yongzhi 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: Nie Zhongwen Inventor before: Yu Yongzhi Inventor before: Zhang Shuyong Inventor before: Wang Yongji Inventor before: Wang Yong Inventor before: Fu Zhe |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing 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 Liupukang, Xicheng District, Beijing 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. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190708 Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing 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 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing 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 |