CN114517855A - Exhaust valve and closed-loop oil collecting device - Google Patents

Exhaust valve and closed-loop oil collecting device Download PDF

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Publication number
CN114517855A
CN114517855A CN202011297016.5A CN202011297016A CN114517855A CN 114517855 A CN114517855 A CN 114517855A CN 202011297016 A CN202011297016 A CN 202011297016A CN 114517855 A CN114517855 A CN 114517855A
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China
Prior art keywords
valve
oil
valve body
oil collecting
float
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Pending
Application number
CN202011297016.5A
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Chinese (zh)
Inventor
郭连升
付起
张文超
丁文昌
王振东
刘丽红
王康
陶帅
吴鑫文
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Petrochina Co Ltd
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Petrochina Co Ltd
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Priority to CN202011297016.5A priority Critical patent/CN114517855A/en
Publication of CN114517855A publication Critical patent/CN114517855A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/30—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a gate valve or sliding valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
    • F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
    • F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
    • F17D1/18—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

The application provides an exhaust valve and closed loop oil collecting device, belongs to oil and gas exploitation technical field. This discharge valve includes: the valve comprises a buffer cavity, a valve body, a valve seat, a floater and a floater valve core; the floater is arranged in the valve body; the valve seat is provided with a through hole, the float valve core penetrates through the through hole, two ends of the float valve core are respectively exposed in the buffer cavity and the valve body, the float valve core is used for releasing gas entering the valve body from the pressure relief port of the oil collecting loop line to the buffer cavity through the inlet hole and the outlet hole, and when the air pressure in the valve body is reduced to be below a preset threshold value, the float moves upwards under the buoyancy of oil entering the valve body from the pressure relief port of the oil collecting loop line; the float valve core is also used for being pushed upwards by the float, so that the air inlet hole enters the through hole of the valve seat and is sealed through the valve seat. The application provides a discharge valve can discharge the gas in the collection oil loop line automatically, has avoided collection oil loop line pressure too big and has influenced the occurence of failure of maintainer's safety, has improved closed loop oil collecting device's security.

Description

Exhaust valve and closed-loop oil collecting device
Technical Field
The application relates to the technical field of oil and gas exploitation, in particular to an exhaust valve and a closed-loop oil collecting device.
Background
In the exploitation process of the oil well, the temperature of oil directly exploited from the oil well is low, so that the viscosity of the oil is high, the mobility of the oil is poor, and the exploitation efficiency of the oil well is greatly influenced due to the poor mobility of the oil. Therefore, in order to increase the production efficiency of the oil well, the temperature of the produced oil needs to be raised; at present, the temperature of the extracted oil is generally raised through a closed-loop oil collecting device.
In the related art, the closed-loop oil collecting device comprises an oil collecting pipeline, a water mixing pipeline, a valve switch and a plurality of Christmas trees. The oil collecting pipeline is sequentially connected with a plurality of Christmas trees to form an oil collecting loop; the water mixing pipeline is connected with the front end of the oil collecting loop and used for heating oil in the oil collecting loop; and the valve switch is connected with the tail end of the oil collecting loop. When the oil collecting loop is maintained or repaired, a worker is required to manually open the valve switch to release the pressure of the oil collecting loop, and after the oil collecting loop finishes releasing the pressure, the worker is required to manually close the valve switch.
In the above related art, since a worker is required to manually open the valve switch each time the oil collecting loop is maintained or repaired, if the worker forgets to open the valve switch, the pressure of the oil collecting loop is too high, and a safety accident occurs, so that the safety of releasing the pressure of the oil collecting loop by manually opening the valve switch is poor.
Disclosure of Invention
The embodiment of the application provides an exhaust valve and closed loop oil collecting device, can improve the security of carrying out the pressure release to the oil collecting loop line. The technical scheme is as follows:
in one aspect, the present application provides a vent valve comprising: the buffer cavity, the valve body, the valve seat, the floater and the floater valve core are arranged in the buffer cavity;
the air inlet of the buffer cavity is connected with the air outlet of the valve body through the valve seat, the air inlet of the valve body is used for being connected with the pressure relief opening of the oil collecting loop, and the floater is arranged in the valve body;
the valve seat is provided with a through hole, the float valve core penetrates through the through hole, two ends of the float valve core are respectively exposed in the buffer cavity and the valve body, the top end of the float valve core is provided with an air outlet, and the bottom end of the float valve core is circumferentially provided with an air inlet;
the float valve core is used for releasing gas entering the valve body from the pressure relief port of the oil collecting loop line to the buffer cavity through the inlet hole and the outlet hole;
when the air pressure in the valve body is reduced to be below a preset threshold value, the floater moves upwards under the buoyancy of oil entering the valve body from the pressure relief port of the oil collecting loop line; the float valve core is also used for being pushed upwards by the float, so that the air inlet hole enters the through hole of the valve seat, and the air inlet hole is sealed by the valve seat.
In one possible implementation, the float valve element includes a first limiting member, a second limiting member, and a valve element;
the first limiting part is arranged at the top end of the valve core, and the second limiting part is arranged at the bottom end of the valve core; the valve core penetrates through the through hole, and the first limiting piece and the second limiting piece are respectively exposed in the buffer cavity and the valve body;
the top end of the valve core is provided with an air outlet, and the bottom end of the valve core is provided with an air inlet along the circumferential direction;
the first limiting piece and the second limiting piece are used for limiting the moving distance of the valve core in the process that the valve core moves through the through hole.
In another possible implementation manner, the first limiting member includes a fixing member and a fixing pin;
the fixing piece wraps the outer surface of the top end of the valve core, pin holes are formed in the two ends of the fixing piece respectively, and the fixing pin fixes the fixing piece through the pin holes.
In another possible implementation manner, the second limiting member includes an annular boss, a diameter of a protruding end of the annular boss is smaller than a diameter of the through hole, and a diameter of a base of the annular boss is larger than the diameter of the through hole.
In another possible implementation, the exhaust valve further comprises a first sealing ring;
the first sealing ring is sleeved on the protruding end of the annular boss and is attached to the upper surface of the base of the annular boss;
the first sealing ring is used for sealing a gap between the base of the annular boss and the valve seat.
In this application embodiment, when the base of annular boss and the bottom contact of disk seat, the gap between the base of annular boss and the disk seat can be sealed to first sealing washer, prevents that fluid in the valve body from flowing into the float case, has avoided fluid to block up the float case, has improved the stability of this discharge valve work.
In another possible implementation, the exhaust valve further comprises a second sealing ring;
the second sealing ring is arranged between the valve body and the valve seat and used for sealing a gap between the valve body and the valve seat.
In this application embodiment, the second sealing washer can seal the gap between valve body and the disk seat, prevents that the gas in the valve body from getting into buffer chamber from the gap when the exhaust hole on the float case is in the closed condition, has improved this discharge valve's gas tightness.
In another possible implementation, the exhaust valve further comprises an orifice plate;
one end of the pore plate is connected with the air inlet of the valve body, and the other end of the pore plate is used for being connected with the pressure relief opening of the oil collecting loop line.
In the embodiment of the application, the pore plate can reduce the pressure of the oil flowing to the valve body, improve the speed of the oil flowing to the valve body, improve the liquid level rising speed of the oil in the valve body, and reduce the time for closing the air inlet hole in the float valve core, so that the working efficiency of the exhaust valve is improved.
In another possible implementation manner, the exhaust valve further comprises a connecting pipe, a first valve switch and an external connecting pipe;
one end of the first valve switch is connected with the air outlet of the buffer cavity through the connecting pipe, the other end of the first valve switch is connected with one end of the external connecting pipe, and the other end of the external connecting pipe is used for being connected with the air collecting device;
and the first valve switch is used for controlling the speed of the gas in the buffer cavity to be discharged to the gas collecting device.
In another aspect, the present application provides a closed-loop oil collecting device, comprising: the device comprises an exhaust valve, an oil collecting pipeline, a water mixing pipeline and a plurality of Christmas trees, wherein the exhaust valve is any one of the exhaust valves;
the oil collecting pipeline is sequentially connected with the plurality of Christmas trees and is used for connecting the plurality of Christmas trees in series to form an oil collecting loop;
the water mixing pipeline is connected with the front end of the oil collecting loop and used for heating oil in the oil collecting loop;
and the air inlet of the valve body of the exhaust valve is connected with the pressure relief opening of the oil collecting loop line and used for discharging the air in the oil collecting loop line.
In one possible implementation, the closed loop oil catcher further comprises a filter and a second valve switch;
one end of the filter is connected with an air inlet of the valve body of the exhaust valve, and the other end of the filter is connected with a pressure relief opening of the oil collecting loop line through the second valve switch;
the filter is used for filtering oil entering the valve body from the oil collecting loop;
and the second valve switch is used for controlling the flow speed of the oil liquid.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
the embodiment of the application provides an automatic exhaust valve, when the gas in the oil collecting pipeline is more, this exhaust valve can release the gas in the oil collecting loop to the buffer cavity through the access hole and the venthole on the float case, when the gas in the oil collecting pipeline is less, the float of this exhaust valve receives the buoyancy of fluid to move upwards, and then promotes the inlet port of float case and gets into in the through-hole of disk seat, stops to the buffer cavity release the gas in the oil collecting loop. Therefore, the exhaust valve provided by the application can automatically exhaust gas in the oil collecting pipeline, and safety accidents caused by overlarge pressure of the oil collecting pipeline are avoided. Therefore, the safety of carrying out the pressure release to the oil collecting pipeline has been improved to the discharge valve that this application embodiment provided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a discharge valve according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an orifice plate according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a second seal ring according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a float valve spool according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a closed-loop oil collecting device provided according to an embodiment of the present application.
Reference numerals:
11 buffer cavity
12 valve body
13 valve seat
14 float
15 float valve core
151 first limiting part
152 second position limiting member
153 valve core
16 orifice plate
161 center via
162 side hole
17 first seal ring
18 connecting pipe
19 first valve switch
20 external connecting pipe
1 exhaust valve
2 oil collecting pipeline
3 watering pipeline
31 first check valve
4 Christmas tree
41 second check valve
5 Filter
6 second valve switch
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an exhaust valve according to an embodiment of the present disclosure. Referring to fig. 1, the discharge valve includes: the valve comprises a buffer cavity 11, a valve body 12, a valve seat 13, a floater 14 and a floater valve core 15;
the air inlet of the buffer cavity 11 is connected with the air outlet of the valve body 12 through the valve seat 13, the air inlet of the valve body 12 is used for being connected with the pressure relief opening of the oil collecting loop, and the floater 14 is arranged in the valve body 12;
the valve seat 13 is provided with a through hole, the float valve core 15 penetrates through the through hole, two ends of the float valve core 15 are respectively exposed in the buffer cavity 11 and the valve body 12, the top end of the float valve core 15 is provided with an air outlet, and the bottom end of the float valve core 15 is circumferentially provided with an air inlet;
the float valve core 15 is used for releasing gas entering the valve body 12 from a pressure relief port of the oil collecting loop line to the buffer cavity 11 through the inlet hole and the outlet hole;
when the air pressure in the valve body 12 is reduced to be below a preset threshold value, the floater 14 moves upwards under the buoyancy of oil entering the valve body 12 from a pressure relief opening of the oil collecting loop; the float valve core 15 is also used for being pushed upwards by the float 14, so that the air inlet hole enters the through hole of the valve seat 13, and the air inlet hole is sealed through the valve seat 13.
It should be noted that after the air inlet hole of the float valve core 15 enters the through hole of the valve seat 13, the oil output from the oil well is differentiated by gravity, the gas is separated from the oil and collected in the oil collecting loop, and enters the valve body 12 from the pressure relief opening of the oil collecting loop, along with the increase of the gas in the valve body 12, the air pressure in the valve body 12 is increased to above the preset threshold, the liquid level of the oil in the valve body 12 is gradually reduced, and the float 14 moves downward. At this time, the float valve core 15 moves downward due to its own weight, and the air intake hole exits from the through hole of the valve seat 13, and starts to release the air in the valve body 12 to the buffer chamber 11.
The embodiment of the application provides an exhaust valve, when the gas in the oil collecting loop is more, this exhaust valve can release the gas in the oil collecting loop to the buffer cavity through the access hole and the venthole on the float valve core, and when the gas in the oil collecting loop is less, the float of this exhaust valve receives the buoyancy of fluid and upwards moves, and then promotes the inlet port of float valve core and gets into in the through-hole of disk seat, stops to the gas in the oil collecting loop of buffer cavity release. Therefore, the exhaust valve provided by the application can automatically discharge gas in the oil collecting loop, and the safety of workers is prevented from being influenced by overlarge pressure of the oil collecting loop. Therefore, the safety of carrying out the pressure release to the oil collecting loop line has been improved to the discharge valve that this application embodiment provided.
Introduction of the buffer chamber 11: the air inlet of the buffer cavity 11 is connected with the air outlet of the valve body 12 through the valve seat 13.
In a possible implementation manner, the top end of the valve seat 13 is connected with the air inlet of the buffer cavity 11, and the bottom end of the valve seat 13 is connected with the air outlet of the valve body 12. Optionally, an air inlet of the buffer cavity 11 is provided with a first internal thread, an air outlet of the valve body 12 is provided with a second internal thread, a top end of the valve seat 13 is provided with a first external thread, and a bottom end of the valve seat 13 is provided with a second external thread. An air inlet of the buffer cavity 11 is connected with the top end of the valve seat 13 through a first internal thread and a first external thread; the air outlet of the valve body 12 is connected with the bottom end of the valve seat 13 through a second internal thread and a second external thread.
In the embodiment of the application, the air inlet of the buffer cavity 11, the valve seat 13 and the air outlet of the valve body 12 are connected through the threads, so that the buffer cavity 11 and the valve seat 13 are convenient to mount and dismount, the labor cost is reduced, and the applicability of the exhaust valve is improved.
In another possible implementation, the inlet of the buffer chamber 11 is directly connected to the outlet of the valve body 12. The valve seat 13 is connected to only the air outlet of the valve body 12 for sealing the air outlet of the valve body 12. Optionally, a third internal thread is arranged at the air inlet of the buffer cavity 11, and a third external thread is arranged at the air outlet of the valve body 12; the air inlet of the buffer cavity 11 is connected with the air outlet of the valve body 12 through a third internal thread and a third external thread.
In the embodiment of the application, the air inlet of the buffer cavity 11 is directly connected with the air outlet of the valve body 12, so that the connecting interfaces are reduced, the probability of air leakage from the connecting interfaces is reduced, the air tightness of the exhaust valve is improved, and the working stability of the exhaust valve is improved.
The shape of the buffer cavity 11 may be a cube, a cuboid or a cylinder. The material of the buffer cavity 11 is metal or metal alloy. In the embodiment of the present application, the shape and material of the buffer cavity 11 are not particularly limited, and may be set and modified as needed.
It should be noted that the height of the buffer chamber 11 is greater than the length of the float spool 15, and the buffer chamber 11 can provide a space for the float spool 15 to move upward during the process that the float spool 15 is pushed upward by the float 14.
Introduction of the valve body 12: the air inlet of the valve body 12 is used for being connected with a pressure relief opening of an oil collecting loop, and the floater 14 is arranged in the valve body 12.
In a possible implementation manner, a flange is arranged on the outer side of the air inlet of the valve body 12, and the air inlet of the valve body 12 is connected with the pressure relief opening of the oil collecting loop through the flange. Alternatively, the flange and the air inlet of the valve body 12 may be integrally formed, or may be connected by welding.
In this application embodiment, because directly through flange joint between the air inlet of valve body 12 and the pressure release mouth of gathering oil loop line, when passing through screw mounting flange, only need valve body 12 and gathering oil loop line butt joint, need not rotate valve body 12, so reduceed and connected the degree of difficulty between valve body 12 and the gathering oil loop line, improved the efficiency of installing this discharge valve.
In another possible implementation, the exhaust valve further includes an orifice plate 16; the air inlet of the valve body 12 is connected with the pressure relief opening of the oil collecting loop line through a pore plate 16. Wherein, the air inlet of valve body 12 is connected to one end of orifice plate 16, and the other end of orifice plate 16 is used for being connected with the pressure release mouth of oil gathering loop line. Optionally, one end of the orifice plate 16 is connected to the air inlet of the valve body 12 through a screw thread, and the other end of the orifice plate 16 is connected to the pressure relief opening of the oil collecting loop through a screw thread.
In the embodiment of the application, the air inlet of the valve body 12, the pressure relief opening of the oil collecting loop line and the pore plate 16 are directly connected through the threads, so that the exhaust valve is simple in structure, convenient to assemble, low in cost and high in applicability.
In one possible implementation, the orifice plate 16 is provided with a plurality of through holes; optionally, the through holes are uniformly distributed on the orifice plate 16, and the size of the through holes may be the same or different. Wherein, the number of the through holes can be any value between 5 and 10, such as 5, 6, 7, etc.; in the embodiment of the present application, the number, size, and distribution of the through holes are not specifically limited, and may be set and changed as needed.
For example, referring to fig. 2, the orifice plate 16 is provided with 7 through holes, including 1 central through hole 161 and 6 side holes 162; the 7 through holes are uniformly distributed on the pore plate 16 in a plum blossom shape; wherein the size of the central through hole 161 is larger than the size of the 6 side holes 162.
In the embodiment of the present application, the orifice plates 16 with the plurality of through holes can reduce the pressure of the oil flowing to the valve body 12, improve the speed of the oil flowing to the valve body 12, improve the liquid level rising speed of the oil in the valve body 12, reduce the time for closing the air inlet hole on the float valve core 15, and improve the working efficiency of the exhaust valve.
It should be noted that the height of the valve body 12 is greater than the length of the float 14, and the valve body 12 can provide a space for the float 14 to move up and down. The shape of the valve body 12 matches the shape of the cushion chamber 11. Optionally, the valve body 12 and the buffer cavity 11 are both cylindrical. The material of the valve body 12 is a metal or a metal alloy. In the embodiment of the present application, the shape and material of the valve body 12 are not particularly limited, and may be set and modified as needed.
The thickness of the valve body 12 may be any value between 4cm and 10cm, e.g., 4cm, 5cm, 6cm, etc. In one possible implementation, the thickness of the valve body 12 is related to the pressure of the oil within the valve body 12, with the greater the pressure within the oil, the greater the thickness of the valve body 12. For example, when the pressure of the oil in the valve body 12 is 2.5Mpa, the thickness of the valve body 12 is 4 cm.
Introduction of the valve seat 13: the valve seat 13 is provided with a through hole, the float valve core 15 passes through the through hole, and two ends of the float valve core are respectively exposed in the buffer cavity 11 and the valve body 12.
The height of the valve seat 13 is smaller than the length of the float valve spool 15, so that when one end of the float valve spool 15 passes through the through hole of the valve seat 13 into the buffer chamber 11, the other end of the float valve spool 15 is exposed in the valve body 12. The material of the valve seat 13 is metal or alloy. In the embodiment of the present application, the shape, size, and material of the valve seat 13 are not particularly limited, and may be set and modified as needed.
In one possible implementation, the float valve element 15 is attached to the inner wall of the through hole, the inner diameter of which matches the outer diameter of the float valve element 15, so that when the inlet hole enters the through hole of the valve seat 13, the inlet hole can be closed by the valve seat 13.
In one possible implementation, the exhaust valve further comprises a second sealing ring; the second seal ring is disposed between the valve body 12 and the valve seat 13, and is used for sealing a gap between the valve body 12 and the valve seat 13.
In a possible implementation manner, the top end of the valve seat 13 is provided with a sealing ring groove, and the second sealing ring is clamped in the sealing ring groove. In the process of connecting the air outlet of the valve body 12 with the valve seat 13, the second sealing ring seals a gap between the valve body 12 and the valve seat 13. The material of the second sealing ring is flexible material, such as rubber.
In this application embodiment, the second sealing washer can seal the gap between valve body 12 and the valve seat 13, prevents that the gas in the valve body 12 from getting into buffer cavity 11 from the gap between sealed valve body 12 and the valve seat 13 to this discharge valve's gas tightness has been improved.
Introduction of the float 14: the float 14 is disposed within the valve body 12, and as the level of oil within the valve body 12 rises or falls, the float 14 is moved upward or downward by the buoyancy of the oil.
Optionally, the float 14 is a hollow housing. The float 14 has a ruler smaller than the inner diameter of the valve body 12, and gas at the bottom end of the valve body 12 can flow to the top end of the valve body 12 through a gap between the float 14 and the inner wall of the valve body 12.
In one possible implementation, the float 14 is made of an explosion-proof material; alternatively, both the float 14 and the float valve body 15 are made of explosion-proof materials. Optionally, the explosion-proof material is a barrier explosion-proof material, or the explosion-proof material is a non-ferrous metal, such as copper, lead, zinc, and the like. Wherein, the blocking explosion-proof material is made of special aluminum alloy series materials and a special processing technology.
In the embodiment of the application, the float 14 is made of an explosion-proof material, so that the float 14 can be prevented from contacting or colliding with the float valve core 15 to ignite the gas in the valve body 12, and the safety of the exhaust valve is improved.
Introduction of the float spool 15: the top end of the float valve core 15 is provided with an air outlet, and the bottom end of the float valve core 15 is provided with an air inlet along the circumferential direction; the float valve core 15 is used for releasing gas entering the valve body 12 from a pressure relief port of the oil collecting loop line to the buffer cavity 11 through the inlet hole and the outlet hole; when the air pressure in the valve body 12 is reduced to be below a preset threshold value, the floater 14 moves upwards under the buoyancy of oil entering the valve body 12 from a pressure relief opening of the oil collecting loop; the float valve core 15 is also used for being pushed upwards by the float 14, so that the air inlet hole enters the through hole of the valve seat 13, and the air inlet hole is sealed through the valve seat 13. Optionally, the preset threshold is standard atmospheric pressure.
In the embodiment of the application, as the float 14 moves upwards under the buoyancy of the oil, the air inlet hole on the float valve core 15 is closed, and further the oil is prevented from overflowing the exhaust valve to pollute the environment, so that the safety of the exhaust valve is improved.
In one possible implementation, referring to fig. 4, the float spool 15 includes a first stopper 151, a second stopper 152, and a spool 153; the first stopper 151 is disposed at the top end of the valve core 153, and the second stopper 152 is disposed at the bottom end of the valve core 153; the valve core 153 passes through the through hole, and the first stopper 151 and the second stopper 152 are respectively exposed in the buffer cavity 11 and the valve body 12; the top end of the valve core 153 is provided with an air outlet, and the bottom end of the valve core 153 is provided with an air inlet along the circumferential direction; the first and second stoppers 151 and 152 are used to limit the movement distance of the valve element 153 during the movement of the valve element 153 through the through hole.
In the embodiment of the present application, the first limiting member 151 and the second limiting member 152 limit the moving distance of the valve element 153 in the process that the valve element 153 moves through the through hole, so that the valve element 153 can be prevented from falling off from the through hole, and the stability of the operation of the exhaust valve is improved.
In one possible implementation, the first limiting member 151 includes a fixing member and a fixing pin; the fixing piece wraps up the surface on the top of case 153, and the both ends of fixing piece are equipped with the pinhole respectively, and the fixed pin passes through pinhole fixed mounting. Wherein, the external diameter of mounting is greater than the diameter of through-hole, and the internal diameter of mounting and the external diameter phase-match of case 153. During downward movement of the float spool 15 by gravity, the fixing member contacts the upper surface of the valve seat 13 for limiting the movement distance of the spool 153 moving downward.
In a possible implementation manner, the inner wall of the pin hole is provided with a fourth internal thread, the outer side of the fixing pin is provided with a fourth external thread, the fixing pin passes through the pin holes at the two ends of the fixing piece, the two ends of the fixing piece are gradually attached by rotating the fixing pin, and the inner diameter of the fixing piece is reduced, so that the fixing pin is fixed to the top end of the valve core 153.
In the embodiment of the present application, the fixing pin fixes the fixing member to the outer surface of the top end of the valve core 153 through the pin hole, so that the fixing member can limit the moving distance of the valve core 153 in the downward movement, and does not interfere with the through hole of the valve core 153, thereby improving the working stability of the exhaust valve.
In one possible implementation, the second limiting member 152 includes an annular boss, the diameter of the protruding end of the annular boss is smaller than that of the through hole, and the diameter of the base of the annular boss is larger than that of the through hole. In the process that the float spool 15 is pushed upward by the float 14 and the intake port enters the through hole of the valve seat 13, the base of the annular boss contacts the lower surface of the valve seat 13 for limiting the moving distance of the upward movement of the spool 153.
In the embodiment of the present application, since the diameter of the base of the annular boss is larger than that of the through hole, the working stability of the exhaust valve is improved by increasing the size of the base of the annular boss, i.e., limiting the moving distance of the valve element 153 in the upward direction, and increasing the force-bearing area when the float 14 contacts or collides with the float valve element 15.
In a possible implementation, the exhaust valve further comprises a first sealing ring 17; the first sealing ring 17 is sleeved on the protruding end of the annular boss and is attached to the upper surface of the base of the annular boss; and the first sealing ring 17 is used for sealing a gap between the base of the annular boss and the valve seat 13. Optionally, referring to fig. 3, the first sealing ring 17 is a circular sealing gasket, an inner diameter of the circular sealing gasket is matched with an outer diameter of the protruding end, and an outer diameter of the circular sealing gasket is matched with an outer diameter of the base. The material of the first sealing ring 17 is a flexible material, such as rubber.
In this application embodiment, when the inlet port gets into the through-hole of valve seat 13, the base of annular boss and valve seat 13 contact, and first sealing washer 17 can seal the gap between the base of annular boss and valve seat 13 to further seal the inlet port, improved this discharge valve's gas tightness.
In a possible implementation, the exhaust valve further includes a connection pipe 18, a first valve switch 19, and an external connection pipe 20; one end of a first valve switch 19 is connected with the air outlet of the buffer cavity 11 through a connecting pipe 18, the other end of the first valve switch 19 is connected with one end of an external connecting pipe 20, and the other end of the external connecting pipe 20 is used for being connected with a gas collecting device; and the first valve switch 19 is used for controlling the discharge speed of the gas in the buffer cavity 11 to the gas collecting device.
In this application embodiment, because discharge valve still includes connecting pipe 18, first valve switch 19 and external pipe 20, can import the gas collection device with discharge valve combustion gas through external pipe 20, realized collecting the gas in the oil collecting loop line in real time, improved the utilization ratio of resource.
In a possible implementation manner, when the exhaust valve works normally, the first valve switch 19 is in an open state, and when the exhaust valve stops working, the first valve switch 19 is in a closed state. Alternatively, the first valve switch 19 may be a manual valve switch, such as a ball valve; the first valve switch 19 may also be an electrically operated valve switch.
In a possible implementation manner, one end of the first valve switch 19 is connected with one end of the connecting pipe 18 through a screw thread, the other end of the connecting pipe 18 is connected with the air outlet of the buffer cavity 11 through a screw thread, the other end of the first valve switch 19 is connected with one end of the external connection pipe 20 through a screw thread, and the other end of the external connection pipe 20 is connected with the air collection device through a screw thread.
The oil output from the oil well is differentiated by gravity, natural gas is separated out from the oil and is collected in the oil collecting loop, and the gas entering the gas collecting device from the exhaust valve is natural gas. Wherein the gas collecting device comprises at least one of a natural gas collecting device and a natural gas heating furnace.
In one possible implementation, the gas collection device comprises a natural gas collection device and a natural gas heating furnace. One end of the first valve switch 19 is connected with one end of the natural gas collecting device, and the other end of the natural gas collecting device is connected with the natural gas heating furnace. The collecting device is used for collecting natural gas discharged by the first valve switch 19 and transmitting the collected natural gas to the natural gas heating furnace, the natural gas heating furnace utilizes the heat of natural gas combustion to increase the temperature of oil in the oil collecting loop, the viscosity of the oil is reduced, the flowing speed of the oil in the oil collecting loop is increased, and further the yield of the oil well is improved.
In this application embodiment, owing to transmit the natural gas of gathering oil loop to collection device through discharge valve, and then increase the temperature of the interior fluid of gathering oil loop through the natural gas heating furnace, so this discharge valve can carry out effective utilization to the natural gas of gathering oil loop, has improved the utilization ratio of resource.
Fig. 5 is a schematic structural diagram of a closed-loop oil collecting device according to an embodiment of the present application. Referring to fig. 5, the closed-loop oil collecting device includes: the device comprises an exhaust valve 1, an oil collecting pipeline 2, a water mixing pipeline 3 and a plurality of Christmas trees 4, wherein the exhaust valve is the exhaust valve 1 in any possible implementation mode; the oil collecting pipeline 2 is sequentially connected with a plurality of Christmas trees 4 and is used for connecting the Christmas trees 4 in series to form an oil collecting loop line; the water mixing pipeline 3 is connected with the front end of the oil collecting loop and used for heating oil in the oil collecting loop; the air inlet of the valve body 12 of the exhaust valve 1 is connected with the pressure relief opening of the oil collecting loop for discharging air in the oil collecting loop.
The embodiment of the application provides a closed-loop oil collecting device, when the gas in the oil collecting loop is more, the exhaust valve 1 can release the gas in the oil collecting loop to the buffer cavity 11 through the inlet hole and the outlet hole on the float valve core 15, when the gas in the oil collecting loop is less, the float 14 of the exhaust valve 1 moves upwards under the buoyancy of oil, and then the air inlet hole of the float valve core 15 is pushed to enter the through hole of the valve seat 13, and the release of the gas in the oil collecting loop to the buffer cavity 11 is stopped. Therefore, the closed-loop oil collecting device provided by the application can automatically discharge gas in the oil collecting loop, and the safety of workers is prevented from being influenced by overlarge pressure of the oil collecting loop. Therefore, the exhaust valve 1 provided by the embodiment of the application improves the safety of pressure relief of the oil collecting loop.
In one possible implementation, the closed loop oil trap further includes a filter 5 and a second valve switch 6; one end of the filter 5 is connected with an air inlet of a valve body 12 of the exhaust valve 1, and the other end of the filter 5 is connected with a pressure relief opening of the oil collecting loop line through a second valve switch 6; the filter 5 is used for filtering the oil entering the valve body 12 from the oil collecting loop; and a second valve switch 6 for controlling the flow rate of the oil.
In the embodiment of the application, because the oil entering the valve body 12 through the oil collecting loop is filtered by the filter 5, the blocking of the exhaust valve 1 by impurities in the oil is avoided, and thus the working stability of the closed-loop oil collecting device is improved.
It should be noted that, with continued reference to fig. 5, a first check valve 31 is installed in a pipe connecting the watering pipe 3 and the front end of the oil collecting loop. A second check valve 41 is installed in a pipeline connecting the Christmas tree 4 and the oil collecting pipeline 2.
In the embodiment of the present application, since the first check valve 31 can prevent the oil in the oil collecting loop from flowing back to the watering pipe 3, and the second check valve 41 can prevent the oil in the oil collecting loop from flowing back to the christmas tree, the oil in the oil collecting loop can only flow in one direction, so that the working stability of the closed-loop oil collecting device is improved.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An exhaust valve, comprising: the valve comprises a buffer cavity (11), a valve body (12), a valve seat (13), a floater (14) and a floater valve core (15);
the air inlet of the buffer cavity (11) is connected with the air outlet of the valve body (12) through the valve seat (13), the air inlet of the valve body (12) is used for being connected with the pressure relief opening of the oil collecting loop, and the floater (14) is arranged in the valve body (12);
the valve seat (13) is provided with a through hole, the float valve core (15) penetrates through the through hole, two ends of the float valve core are respectively exposed in the buffer cavity (11) and the valve body (12), the top end of the float valve core (15) is provided with an air outlet, and the bottom end of the float valve core (15) is circumferentially provided with an air inlet;
the float valve core (15) is used for releasing gas entering the valve body (12) from a pressure relief port of the oil collecting loop line to the buffer cavity (11) through the inlet hole and the outlet hole;
when the air pressure in the valve body (12) is reduced to be below a preset threshold value, the floater (14) moves upwards under the buoyancy of oil entering the valve body (12) from a pressure relief opening of the oil collecting loop; the float valve core (15) is also used for being pushed upwards by the float (14) so that the air inlet hole enters the through hole of the valve seat (13) and is sealed by the valve seat (13).
2. The vent valve of claim 1, wherein the float spool (15) includes a first stop (151), a second stop (152), and a spool (153);
the first limiting piece (151) is arranged at the top end of the valve core (153), and the second limiting piece (152) is arranged at the bottom end of the valve core (153); the valve core (153) penetrates through the through hole, and the first limiting piece (151) and the second limiting piece (152) are respectively exposed in the buffer cavity (11) and the valve body (12);
the top end of the valve core (153) is provided with an air outlet, and the bottom end of the valve core (153) is provided with an air inlet along the circumferential direction;
the first limiting piece (151) and the second limiting piece (152) are used for limiting the moving distance of the valve core (153) in the process that the valve core (153) moves through the through hole.
3. The venting valve according to claim 2, wherein the first retaining member (151) comprises a fixing member and a fixing pin;
the fixing piece wraps the outer surface of the top end of the valve core (153), pin holes are formed in the two ends of the fixing piece respectively, and the fixing pin fixes the fixing piece through the pin holes.
4. The exhaust valve according to claim 2, wherein the second retaining member (152) comprises an annular boss, the diameter of the protruding end of the annular boss is smaller than the diameter of the through hole, and the diameter of the base of the annular boss is larger than the diameter of the through hole.
5. The vent valve of claim 4, further comprising a first sealing ring;
the first sealing ring is sleeved on the protruding end of the annular boss and is attached to the upper surface of the base of the annular boss;
the first sealing ring is used for sealing a gap between the base of the annular boss and the valve seat (13).
6. An exhaust valve according to claim 1, characterized in that it further comprises a second sealing ring (17);
the second sealing ring (17) is arranged between the valve body (12) and the valve seat (13) and used for sealing a gap between the valve body (12) and the valve seat (13).
7. The vent valve of claim 1, further comprising an orifice plate (16);
one end of the pore plate (16) is connected with the air inlet of the valve body (12), and the other end of the pore plate (16) is used for being connected with the pressure relief opening of the oil collecting loop line.
8. The venting valve according to claim 1, further comprising a connecting tube (18), a first valve switch (19) and an extension tube (20);
one end of the first valve switch (19) is connected with an air outlet of the buffer cavity (11) through the connecting pipe (18), the other end of the first valve switch (19) is connected with one end of the external connecting pipe (20), and the other end of the external connecting pipe (20) is used for being connected with a gas collecting device;
the first valve switch (19) is used for controlling the discharge speed of the gas in the buffer cavity (11) to the gas collecting device.
9. A closed-loop oil collection device, comprising: the oil recovery system comprises an exhaust valve (1), an oil collecting pipeline (2), a water mixing pipeline (3) and a plurality of Christmas trees (4), wherein the exhaust valve (1) is the exhaust valve according to any one of claims 1-8;
the oil collecting pipeline (2) is sequentially connected with the plurality of Christmas trees (4) and is used for connecting the plurality of Christmas trees (4) in series to form an oil collecting loop;
the water mixing pipeline (3) is connected with the front end of the oil collecting loop and used for heating oil in the oil collecting loop;
and the air inlet of the valve body (12) of the exhaust valve (1) is connected with the pressure relief opening of the oil collecting loop line and used for discharging air in the oil collecting loop line.
10. The closed loop oil catcher as claimed in claim 9, characterized in that it further comprises a filter (5) and a second valve switch (6);
one end of the filter (5) is connected with an air inlet of a valve body (12) of the exhaust valve (1), and the other end of the filter (5) is connected with a pressure relief opening of the oil collecting loop line through the second valve switch (6);
the filter (5) is used for filtering oil entering the valve body (12) from the oil collecting loop;
the second valve switch (6) is used for controlling the flow speed of the oil liquid.
CN202011297016.5A 2020-11-18 2020-11-18 Exhaust valve and closed-loop oil collecting device Pending CN114517855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011297016.5A CN114517855A (en) 2020-11-18 2020-11-18 Exhaust valve and closed-loop oil collecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011297016.5A CN114517855A (en) 2020-11-18 2020-11-18 Exhaust valve and closed-loop oil collecting device

Publications (1)

Publication Number Publication Date
CN114517855A true CN114517855A (en) 2022-05-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2051698U (en) * 1989-05-22 1990-01-24 于洪远 Automatic exhaust valve
CN1488872A (en) * 2003-08-26 2004-04-14 大连河山阀门厂 Pilot self-fastening automatic discharge valve and operation method thereof
US20150267828A1 (en) * 2012-10-01 2015-09-24 Dezurik, Inc. Combination air valve
CN208122839U (en) * 2018-03-02 2018-11-20 中国石油天然气股份有限公司 Water mixing forced circulation combination unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2051698U (en) * 1989-05-22 1990-01-24 于洪远 Automatic exhaust valve
CN1488872A (en) * 2003-08-26 2004-04-14 大连河山阀门厂 Pilot self-fastening automatic discharge valve and operation method thereof
US20150267828A1 (en) * 2012-10-01 2015-09-24 Dezurik, Inc. Combination air valve
CN208122839U (en) * 2018-03-02 2018-11-20 中国石油天然气股份有限公司 Water mixing forced circulation combination unit

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