CN217356916U - Offshore oil and gas field torch gas pressurization recovery system - Google Patents
Offshore oil and gas field torch gas pressurization recovery system Download PDFInfo
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- CN217356916U CN217356916U CN202221297987.4U CN202221297987U CN217356916U CN 217356916 U CN217356916 U CN 217356916U CN 202221297987 U CN202221297987 U CN 202221297987U CN 217356916 U CN217356916 U CN 217356916U
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Abstract
The utility model relates to an offshore oil gas field torch gas pressurization recovery system, include in the past to the back that sets gradually divide liquid tank inlet tube, torch branch fluid reservoir, divide liquid tank outlet pipe, torch house steward and torch head, still include pressure boost efflux subassembly and locate the backpressure regulating valve group between dividing liquid tank outlet pipe and torch house steward. The utility model discloses simple structure can effectively retrieve offshore platform torch unloading, can save the deck space simultaneously, and the construction degree of difficulty is little, and construction cycle is short, can reduce transformation cost and maintenance cost.
Description
Technical Field
The utility model relates to an ocean engineering equipment technical field especially relates to an offshore oil and gas field torch gas pressurization recovery system.
Background
With the proposition of the strategic objective of national "carbon peak, carbon neutralization", fixed platform flare gas recovery in offshore oil and gas fields presents certain challenges. The existing flare gas recovery technology of the existing offshore platform is 'compressor + water seal tank + quick-opening valve + explosion needle valve', but the deck space of the offshore production facility is limited, the deck space required by the compressor and the water seal tank related to the existing flare gas recovery technology is large, and meanwhile, the problems of high early investment and maintenance cost, large construction difficulty and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome exist among the prior art not enough, provide an offshore oil gas field torch gas pressurization recovery system.
The utility model discloses a realize through following technical scheme:
the utility model provides an offshore oil and gas field torch gas pressurization recovery system, includes the knockout drum inlet tube, torch knockout drum, knockout drum outlet pipe, torch house steward and the torch head that set gradually after to in the past, its characterized in that still includes pressure boost efflux subassembly and locates the backpressure regulating valve group between knockout drum outlet pipe and torch house steward, backpressure regulating valve group is including parallelly connected first governing valve and the first quick-open valve that sets up, pressure boost efflux subassembly includes the ejector, is connected to the low pressure inlet tube, high pressure inlet tube and the ejector outlet pipe of ejector, the ejector outlet pipe other end is connected to fuel system, the low pressure inlet tube other end is connected to the knockout drum outlet pipe, and the low pressure inlet tube is close to the ejector position and is equipped with first pressure transmitter and first shutoff valve, and the high pressure inlet tube is close to the ejector position and is equipped with the second shutoff valve.
Preferably, the number of the first regulating valves connected in parallel is two.
Preferably, a first master control valve is arranged at an outlet pipe of the liquid separation tank, a second master control valve is integrally connected in parallel with the first master control valve and the backpressure regulating valve group, and a connecting point of the outlet pipe of the liquid separation tank and the low-pressure inlet pipe is positioned on the rear side of the first master control valve.
Preferably, the flare gas recovery system further comprises a purging pipeline, the purging pipeline comprises a second regulating valve and a second quick-opening valve which are arranged in parallel, and two ends of the purging pipeline are respectively connected to the auxiliary fuel gas system and the flare main pipe.
Preferably, a second pressure transmitter is arranged on the front side of the first main control valve of the outlet pipe of the liquid separation tank, and a temperature transmitter and an oxygen analyzer are arranged on the flare header pipe.
Preferably, the outlet pipe of the liquid separation tank is provided with a third pressure transmitter at the rear side of the first master control valve.
Preferably, a fourth pressure transmitter is arranged between the second regulating valve and the second quick-opening valve parallel connection node and the flare main pipe.
Preferably, the flare header pipe is further provided with a flow meter, and the flow meter is arranged on the rear side of the connecting node of the flare header pipe and the purging pipeline.
Preferably, the branch pipe where the first regulating valve is located, the branch pipe where the first quick-opening valve is located, the branch pipe where the second regulating valve is located and the branch pipe where the second regulating valve is located are provided with auxiliary ball valves on two sides of each valve body.
The utility model has the advantages that:
the utility model has simple structure, can effectively recover the flare emptying of the offshore platform, can save the deck space, has small construction difficulty and short construction period, and can reduce the reconstruction cost and the maintenance cost; the standby first regulating valve can improve the overall stability of the flare gas recovery system; the first master control valve and the second master control valve are arranged, so that the fault is convenient to overhaul, and the maintainability of the system is improved; the purging pipeline can prevent air from flowing backwards, and the safety of a flare discharge system is ensured; the signal values detected by the pressure transmitters, the temperature transmitters and the oxygen analyzer are convenient for the platform to control the opening and closing of the valve bodies, so that the system can run safely; the auxiliary ball valve further improves the maintainability of the system.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an inlet pipe of the liquid separation tank; 2. a torch liquid separation tank; 3. an outlet pipe of the liquid separating tank; 4. a second pressure transmitter; 5. a first master control valve; 6. a third pressure transmitter; 7. a second master control valve; 8. an auxiliary ball valve; 9. a first quick-open valve; 10. a first regulating valve; 11. a fourth pressure transmitter; 12. a second regulating valve; 13. a second quick-opening valve; 14. a flare header pipe; 15. a flow meter; 16. a temperature transmitter; 17. an oxygen analyzer; 18. a torch head; 19. a high pressure inlet pipe; 20. a first pressure transmitter; 21. a low pressure inlet tube; 22. a first shut-off valve; 23. a second shutoff valve; 24. an ejector; 25. and an ejector outlet pipe.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in the figure, the utility model comprises a liquid separating tank inlet pipe 1, a torch liquid separating tank 2, a liquid separating tank outlet pipe 3, a torch main pipe 14 and a torch head 18 which are sequentially arranged from front to back, wherein the liquid separating tank inlet pipe 1 is used for introducing torch gas into the torch liquid separating tank 2, and the torch gas is separated from liquid drops carried by the torch liquid separating tank 2 and then is led out through the liquid separating tank outlet pipe 3, the utility model is characterized by further comprising a pressure boost jet component and a backpressure regulating valve set arranged between the liquid separating tank outlet pipe 3 and the torch main pipe 14, the backpressure regulating valve set comprises a first regulating valve 10 and a first quick opening valve 9 which are arranged in parallel, under normal working conditions, the first quick opening valve 9 is in a closed state, the opening degree of the first regulating valve 10 is controlled according to the magnitude of the torch gas, further, the backpressure of a torch system is regulated, so that the gas in the liquid separating tank outlet pipe 3 is in a micro-positive pressure state, under abnormal working conditions, the quick opening valve can provide a safe discharge channel, the pressurizing jet assembly comprises a jet device 24, a low-pressure inlet pipe 21, a high-pressure inlet pipe 19 and a jet device outlet pipe 25, wherein the low-pressure inlet pipe 21, the high-pressure inlet pipe 19 and the high-pressure outlet pipe 25 are connected to the jet device, the high-pressure inlet pipe 19 is used for introducing high-pressure fuel gas into a high-pressure inlet of the jet device, the other end of the jet device outlet pipe 25 is connected to a fuel system, the other end of the low-pressure inlet pipe 21 is connected to a liquid separation tank outlet pipe 3, the low-pressure inlet pipe 21 is used for introducing low-pressure flare gas in the liquid separation tank outlet pipe 3 into a low-pressure inlet of the jet device, the high-pressure fuel gas and the low-pressure flare gas are mixed by the jet device and then enter the fuel system through the jet device outlet pipe 25, so as to realize the recovery of the flare gas, a first pressure transmitter 20 and a first shutoff valve 22 are arranged at the position, the high-pressure inlet pipe 19 is provided with a second shutoff valve 23 close to the jet device, and the jet device adjusts the usage amount of the high-pressure fuel gas according to the pressure signal detected by the first pressure transmitter 20, can guarantee that the high-pressure fuel gas and the low pressure torch gas of introducing are in best ratio all the time, under the abnormal operating mode, close first shut-off valve 22 and second shut-off valve 23, the pressure boost efflux subassembly stops the recovery to the torch gas, the utility model discloses can effectively retrieve offshore platform torch and empty, can save the deck space simultaneously, the construction degree of difficulty is little, and construction cycle is short, but the transformation cost and maintenance cost.
The number of the first regulating valves 10 in parallel is two, and one of the two first regulating valves 10 is used for standby, so that the overall stability of the flare gas recovery system can be improved.
The branch fluid reservoir outlet pipe 3 is equipped with first master control valve 5, first master control valve 5 and the whole second master control valve 7 that has parallelly connected of backpressure regulating valve group, branch fluid reservoir outlet pipe 3 and low pressure inlet tube 21 tie point are located first master control valve 5 rear side, and under the normal condition, first master control valve 5 is normally opened, and second master control valve 7 normally closed, the system is in and retrieves operating condition, when great trouble appears in the backpressure regulating valve group, can close first master control valve 5 and open second master control valve 7, makes the torch gas burn outward through torch head 18 completely, and then overhauls the trouble, has further improved the maintainability of system.
The flare gas recovery system also comprises a purging pipeline, wherein the purging pipeline comprises a second regulating valve 12 and a second quick-opening valve 13 which are arranged in parallel, and two ends of the purging pipeline are respectively connected to the auxiliary fuel gas system and the flare header pipe 14, so that air backflow is prevented, and the safety of the flare discharge system is ensured.
The branch fluid tank outlet pipe 3 is equipped with second pressure transmitter 4 in first total governing valve 5 front side for detect the pressure signal of branch fluid tank outlet pipe 3, torch house steward 14 is equipped with temperature transmitter 16 and oxygen analyzer 17, and the first quick-open valve 9 of the control according to the pressure signal that second pressure transmitter 4 detected, the temperature signal that temperature transmitter 16 detected and the oxygen content signal control that oxygen analyzer 17 detected in the platform of being convenient for, the second quick-open valve 13, the first shut-off valve 22, the opening and shutting of second shut-off valve 23 and ejector guarantee the whole safe operation of system.
And a third pressure transmitter 6 is arranged on the rear side of the first master control valve 5 of the outlet pipe 3 of the liquid separation tank, so that the platform central control can adjust the first regulating valve 10 according to a pressure signal detected by the third pressure transmitter 6, and the backpressure of the torch system is always kept in a preset range.
And a fourth pressure transmitter 11 is arranged between the parallel connection node of the second regulating valve 12 and the second quick-opening valve 13 and the flare header pipe 14, so that the second regulating valve 12 is conveniently regulated by the platform central control according to a pressure signal detected by the fourth pressure transmitter 11, and the flare table is prevented from being extinguished.
The flare header pipe 14 is also provided with a flow meter 15, and the flow meter 15 is arranged behind the connecting node of the flare header pipe 14 and the purging pipeline and used for detecting the gas flow passing through the flare header pipe 14.
The branch pipe where the first regulating valve 10 is located, the branch pipe where the first quick-opening valve 9 is located, the branch pipe where the second regulating valve 12 is located and the branch pipe where the second regulating valve 12 is located are provided with the auxiliary ball valves 8 on two sides of each valve body, the auxiliary ball valves 8 are normally open, and when the valve bodies in the first regulating valve 10, the first quick-opening valve 9, the second regulating valve 12 or the second quick-opening valve 13 are in fault, the auxiliary ball valves 8 corresponding to two sides of the fault valve can be closed, so that the fault valve can be conveniently overhauled.
The utility model discloses a theory of operation is, draws gas of the same kind to retrieve to the ejector on separating liquid tank outlet pipe 3, sets up backpressure regulating valve group and pressure boost efflux subassembly simultaneously, is the torch system by first governing valve 10 and establishes the recovery backpressure, after the pressure boost efflux subassembly pressure boost, delivers to the fuel gas system.
When the signal value detected by the second pressure transmitter 4 is higher than the set first lower limit value and lower than the set first upper limit value, the system is in a normal recovery working state, wherein the first lower limit value is lower than the first upper limit value, and the working states of the components are as follows: the first regulating valve 10 regulates the opening according to the pressure signal detected by the third pressure transmitter 6, so that the back pressure of the flare system is always kept in a preset range; the usage amount of the high-pressure fuel gas of the ejector is controlled according to the pressure signal detected by the first pressure transmitter 20, so that the introduced high-pressure fuel gas and the low-pressure flare gas are always in the optimal ratio.
When the second pressure transmitter 4 is higher than the set first upper limit value or lower than the set first lower limit value: the first shut-off valve 22, the second shut-off valve 23 and the ejector are interlockingly shut off, while the first quick-opening valve 9 is opened.
The second quick-open valve 13 opens to purge the flare header 14 from flashback when either of the following conditions is met: a. the signal value detected by the second pressure transmitter 4 is lower than a preset second lower limit value and the signal value detected by the temperature transmitter 16 is higher than a preset second upper limit value, wherein the second lower limit value is smaller than the first lower limit value; b. the signal value detected by the oxygen analyzer 17 is higher than a preset third upper limit value.
The utility model has simple structure, can effectively recover the flare emptying of the offshore platform, can save the deck space, has small construction difficulty and short construction period, and can reduce the reconstruction cost and the maintenance cost; the standby first regulating valve can improve the overall stability of the flare gas recovery system; the first master control valve and the second master control valve are arranged, so that the fault is convenient to overhaul, and the maintainability of the system is improved; the purging pipeline can prevent air from flowing backwards, and the safety of a flare discharging system is ensured; the signal values detected by the pressure transmitters, the temperature transmitters and the oxygen analyzer are convenient for the central control of the platform to control the opening and closing of the valve bodies, so that the system can run safely; the auxiliary ball valve further improves the maintainability of the system.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides an offshore oil and gas field torch gas pressurization recovery system, includes the knockout drum inlet tube, torch knockout drum, knockout drum outlet pipe, torch house steward and the torch head that set gradually after to in the past, its characterized in that still includes pressure boost efflux subassembly and locates the backpressure regulating valve group between knockout drum outlet pipe and torch house steward, backpressure regulating valve group is including parallelly connected first governing valve and the first quick-open valve that sets up, pressure boost efflux subassembly includes the ejector, is connected to the low pressure inlet tube, high pressure inlet tube and the ejector outlet pipe of ejector, the ejector outlet pipe other end is connected to fuel system, the low pressure inlet tube other end is connected to the knockout drum outlet pipe, and the low pressure inlet tube is close to the ejector position and is equipped with first pressure transmitter and first shutoff valve, and the high pressure inlet tube is close to the ejector position and is equipped with the second shutoff valve.
2. The offshore oil and gas field flare gas pressurized recovery system of claim 1, wherein the number of the first regulating valves connected in parallel is two.
3. The offshore oil and gas field flare gas pressurization and recovery system of claim 2, wherein the outlet pipe of the liquid separation tank is provided with a first master control valve, the first master control valve and the backpressure regulating valve set are integrally connected in parallel with a second master control valve, and the connecting point of the outlet pipe of the liquid separation tank and the low pressure inlet pipe is positioned at the rear side of the first master control valve.
4. The offshore oil and gas field flare gas pressurized recovery system of claim 3, further comprising a purging pipeline, wherein the purging pipeline comprises a second regulating valve and a second quick-opening valve which are arranged in parallel, and two ends of the purging pipeline are respectively connected to the auxiliary fuel gas system and the flare header pipe.
5. The offshore oil and gas field flare gas pressurized recovery system of claim 4, wherein the outlet pipe of the diversion tank is provided with a second pressure transmitter at the front side of the first main control valve, and the flare main pipe is provided with a temperature transmitter and an oxygen analyzer.
6. The offshore oil and gas field flare gas pressurized recovery system of claim 4, wherein the outlet pipe of the liquid separation tank is provided with a third pressure transmitter at the rear side of the first main control valve.
7. The offshore oil and gas field flare gas pressurized recovery system of claim 4, wherein a fourth pressure transmitter is arranged between the parallel connection node of the second regulating valve and the second quick-opening valve and the flare main pipe.
8. The offshore oil and gas field flare gas pressurized recovery system of claim 4, wherein the flare header pipe is further provided with a flow meter, and the flow meter is arranged behind the connecting node of the flare header pipe and the purging pipeline.
9. The offshore oil and gas field flare gas pressurization and recovery system of claim 4, wherein the branch pipe where the first regulating valve is located, the branch pipe where the first quick-opening valve is located, the branch pipe where the second regulating valve is located and the branch pipe where the second regulating valve is located are provided with auxiliary ball valves on two sides of each valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221297987.4U CN217356916U (en) | 2022-05-26 | 2022-05-26 | Offshore oil and gas field torch gas pressurization recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221297987.4U CN217356916U (en) | 2022-05-26 | 2022-05-26 | Offshore oil and gas field torch gas pressurization recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217356916U true CN217356916U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221297987.4U Active CN217356916U (en) | 2022-05-26 | 2022-05-26 | Offshore oil and gas field torch gas pressurization recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217356916U (en) |
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2022
- 2022-05-26 CN CN202221297987.4U patent/CN217356916U/en active Active
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