CN117085402A - Cleaning device for drain valve of oil-gas field separator - Google Patents

Cleaning device for drain valve of oil-gas field separator Download PDF

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Publication number
CN117085402A
CN117085402A CN202210514071.8A CN202210514071A CN117085402A CN 117085402 A CN117085402 A CN 117085402A CN 202210514071 A CN202210514071 A CN 202210514071A CN 117085402 A CN117085402 A CN 117085402A
Authority
CN
China
Prior art keywords
filter screen
oil
sand
gas field
inlet
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.)
Pending
Application number
CN202210514071.8A
Other languages
Chinese (zh)
Inventor
罗广祥
荆华
李祖友
聂凌
向雷
王倩
杨垒
陈辉
何利
罗鑫林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Southwest Oil and Gas Co
Original Assignee
China Petroleum and Chemical Corp
Sinopec Southwest Oil and Gas Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Southwest Oil and Gas Co filed Critical China Petroleum and Chemical Corp
Priority to CN202210514071.8A priority Critical patent/CN117085402A/en
Publication of CN117085402A publication Critical patent/CN117085402A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • 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
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention provides a cleaning device for a drain valve of an oil-gas field separator, wherein a cylinder body comprises an inlet connected with the outlet end of a discharge pipeline of the separator, a water outlet connected with the inlet end of the drain valve and a sand outlet connected with the inlet end of a sand storage tank, the inlet and the sand outlet are positioned at two opposite ends of the cylinder body, a filter screen is arranged in the cylinder body, two ends of the filter screen are respectively connected with the inlet and the inner wall close to one end of the sand outlet, one end of the filter screen close to the sand outlet is a closed end, so that the cylinder body is divided into a sand setting cavity and a filter cavity, and the water outlet is positioned at the side part of the cylinder body and is communicated with the filter cavity. When the cleaning device is used, solids and liquid in the separator flow into the trap barrel under the gravity, the solids are intercepted by the filter screen and remain in the filter screen, the filtered liquid enters the trap barrel to realize automatic liquid discharge, the solids in the filter screen are discharged by adopting a manual discharging process, the discharge of the solids and the liquid is realized, and the problem that the sealing surface is damaged after impurities enter the trap is effectively solved.

Description

Cleaning device for drain valve of oil-gas field separator
Technical Field
The invention relates to the technical field of shape transporting devices of petroleum and petrochemical systems, in particular to a cleaning device for drain valves of oil and gas field separators.
Background
Gravity separators are a widely used solid-liquid separator in a station, and are used for separating liquid and solid in natural gas so as to change the natural gas into qualified natural gas. The principle is that the flow rate of natural gas coming out from the bottom of the well is reduced after entering the separator, because the density of liquid and solid is far higher than that of natural gas, and according to the gravity principle, the liquid and solid with high density can be deposited and stored in a hydrops bag below the cylinder body of the separator. After a certain amount of liquid and solid are collected, the drain valve is opened manually according to the liquid level, and the liquid is discharged into the storage tank by utilizing the pressure difference between the inside and the outside of the cylinder.
In order to improve the automatic management capability, the frequency of manual emission is reduced, and the risk of manual emission is reduced. The automatic sewage draining valve is installed in the partial separator, and has the functions of draining the accumulated liquid and solid impurity from the accumulated liquid bag of the separator into the barrel of the sewage draining valve via pipeline, installing float ball inside the barrel, floating the float ball with buoyancy to drive the valve core on the connecting rod to move upwards, separating the valve core from the valve seat and draining the liquid inside the barrel into the storage tank via pipeline under the action of pressure difference. In situ, the stratum water contains partial impurity, especially large amount of ceramic sand for fracturing. When the drain valve is used for automatic sewage discharge, impurities easily pierce the sealing surfaces of the valve seat and the valve core or deposit fracturing sand on the sealing surfaces of the valve seat and the valve core after the accumulated liquid is discharged, the sealing is invalid, the sealing is not tight, and the natural gas in the separator is leaked through the discharge channel of the drain valve under the pressure difference to cause the natural gas waste, so that the risks of environmental pollution and inflammability and explosiveness are caused. To eliminate leakage, the drain valve seal needs to be checked and maintained frequently.
At present, when the drain valve is used, the filter is arranged on the drain valve to filter impurities in liquid, the liquid needs to be checked and cleaned regularly, and no filtering equipment is arranged, so that solid impurities in the liquid can be intercepted, and the filtered liquid can enter the drain valve to be collected without disassembling equipment.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art, and provides a cleaning device for a drain valve of an oil-gas field separator.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a cleaning device for oil gas field separator trap, including the barrel, wherein, the barrel includes the entry of being connected with separator discharge line exit end, the delivery port of being connected with the trap entrance end and the play sand mouth of being connected with the sand storage jar entrance end, entry and play sand mouth are located the barrel relative both ends, be equipped with the filter screen in the barrel, the filter screen both ends respectively with entrance and be close to the inner wall connection of play sand mouth one end, be the blind end on the filter screen near the one end of play sand mouth, thereby separate into sand setting chamber and filter chamber with the barrel, the delivery port is located the lateral part of barrel and communicates with the filter chamber.
According to the cleaning device for the drain valve of the oil-gas field separator, the inlets at the two ends of the cylinder, the sand outlet and the water outlet at the side part form the tee joint similar to the T-shaped structure, when the drain valve works, liquid enters the pipeline to reach the inside of the drain valve cylinder through the filter screen under the action of gravity, the floating ball in the water valve cylinder drives the valve core on the connecting rod to move upwards under the action of buoyancy, the valve core and the valve seat channel are opened, automatic liquid discharge is realized under the pressure difference in the water valve cylinder, solid impurities are accumulated on the inner wall of the filter screen under the interception of the filter screen, the pipeline connected with the sand outlet is used for discharging the solid impurities into the sand storage tank in a manual liquid discharge mode, the problem that the sealing surface is damaged after the impurities enter the drain valve is effectively solved, the normal work of the drain valve is not influenced, and solid particles in the sand setting cavity are discharged.
Further improvements to the above described solution are possible as follows.
According to the cleaning device for drain valves of oil and gas field separators of the present invention, in a preferred embodiment, the filter screen is secured to the inner wall of the cylinder by means of a conical shelf.
Through the fixed filter screen of toper frame, ensure that the shape of filter screen does not change and fixed filter screen keeps apart into sand setting chamber and filtration strong in the barrel, can form toper filter screen structure, take little business turn over, when carrying out artifical manual emission, solid particle can not directly strike the filter screen, instead can remove along the filter screen inner wall surface, drive the solid particle of remaining on the filter screen, play the effect of clearance filter screen, after the interception solid particle, solid particle remains the sand setting intracavity of filter screen inner wall, because the filter screen sectional area of toper structure is greater than pipeline sectional area far away, be difficult to the jam filter screen.
Specifically, the filter screen is fixed on the conical frame through bonding or welding, the fixing mode is that the conical frame filters outwards, a conical filter core with a support is formed through combination, when liquid containing solid particles passes through the conical filter core, the liquid smoothly passes through the conical filter core, the solid particles are intercepted on the filter core, and after intercepting the solid particles, the solid particles are left in a sand setting cavity on the inner wall of the filter screen, so that the effect of filtering the liquid is achieved.
In particular, in a preferred embodiment, the conical shelves are made of steel with a taper between 1:10 and 1:5.
The conical frame with the structural form can ensure the fixation and the support of the filter screen to a great extent.
Further, in a preferred embodiment, a sealing member is provided between the end of the screen adjacent the sand outlet and the inner wall of the barrel.
Through setting up sealing member, can effectively guarantee the sealed effect of blind end, effectively avoid solid particle to get into in the filter chamber influence filter effect.
Further, in a preferred embodiment, a swirl tube is provided at the inlet.
The swirl tube can not influence the drainage effect of the drain valve when in use, and can guide liquid to flow in the tangential direction when the liquid flows only by adopting manual liquid drainage, so as to drive solid particles intercepted on the filter screen and improve the sand drainage effect.
Further, in a preferred embodiment, the swirl tube comprises a seamless tube and two or more sets of helical blades arranged on the inner wall of the seamless tube.
When flowing liquid and natural gas pass through the cyclone pipeline, the flow speed is increased, the liquid and the natural gas can rotationally flow in the filter screen supported by the conical frame under the guidance of the plurality of spiral blades, the solid particle flow intercepted on the filter screen is driven, and then the discharged liquid enters the storage tank, so that the aim of cleaning impurities without disassembling the device is fulfilled.
Further, in a preferred embodiment, the diameters of the two ends of the cylinder are respectively consistent with the diameters of the outlet end of the separator discharge pipeline and the diameter of the pipeline connected with the inlet end of the sand storage tank, the diameter of the middle part of the cylinder is larger than the diameters of the two ends of the cylinder, and the two ends of the cylinder are in transitional connection with the middle part of the cylinder by adopting a gradually expanding arc structure.
The barrel adopts two sections of structures with small outer diameters and large middle diameters, the diameters of the filter screen inlet and the sand outlet are consistent with the diameters of the connecting pipelines, firstly, the filter element is prevented from being damaged due to pipeline reducing or flow velocity and other reasons, secondly, the interception area of the filter screen entering the drain valve is increased, and thirdly, the volume of solid impurities remained on the inner surface of the filter element is increased. And not only can the installation of the cylinder body and the conical frame be satisfied, but also enough space filter cavities and sand settling cavities can be formed in the cylinder body.
Specifically, in a preferred embodiment, the middle of the barrel is of cylindrical configuration.
The cylinder body with the cylindrical structure is easy to process and manufacture and convenient to install and arrange.
Specifically, in a preferred embodiment, the screen is a 80-300 mesh screen.
The filter screen of the structural form can meet the cleaning requirement of the drain valve of the oil-gas field separator to a great extent.
Further, in a preferred embodiment, the inlet, the outlet and the sand outlet are each provided with a mounting flange.
Through setting up mounting flange on the entry, delivery port and the play sand mouth of above-mentioned "tee bend" structure, can improve whole cleaning device's installation maintenance and the convenience of operation to a great extent.
Compared with the prior art, the invention has the advantages that: when the automatic drainage device is used, solids and liquid in the separator flow into the drain valve cylinder body under the gravity, the solids are intercepted by the filter screen arranged in the cylinder body and are reserved in the filter screen, the filtered liquid enters the drain valve cylinder body, automatic drainage is realized, the solids in the filter screen are discharged by adopting a manual discharging process to enter the storage tank, two channels of the solids and the liquid are discharged, and the problem that the sealing surface is damaged after impurities enter the drain valve is effectively solved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 schematically illustrates the mounting structure of a cleaning apparatus 10 for a trap of an oil and gas field separator according to an embodiment of the present invention;
FIG. 2 schematically illustrates the overall construction of a cleaning apparatus 10 for a trap of an oil and gas field separator according to an embodiment of the present invention.
In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific examples, which are not intended to limit the scope of the invention.
FIG. 1 schematically illustrates the mounting structure of a cleaning apparatus 10 for a trap of an oil and gas field separator according to an embodiment of the present invention. FIG. 2 schematically illustrates the overall construction of a cleaning apparatus 10 for a trap of an oil and gas field separator according to an embodiment of the present invention.
As shown in fig. 1 and 2, a cleaning device 10 for a drain valve of an oil-gas field separator according to an embodiment of the present invention includes a cylinder 1, where the cylinder 1 includes an inlet 11 connected to an outlet end of a discharge pipeline of the separator 100, a water outlet 12 connected to an inlet end of the drain valve 200, and a sand outlet 13 connected to an inlet end of a sand storage tank 300, the inlet 11 and the sand outlet 13 are located at opposite ends of the cylinder 1, a filter screen 2 is disposed in the cylinder 1, two ends of the filter screen 2 are respectively connected to the inlet 11 and an inner wall near one end of the sand outlet 13, and one end of the filter screen 2 near the sand outlet 13 is a closed end, so that the cylinder 1 is divided into a sand settling chamber 14 and a filter chamber 15, and the water outlet 12 is located at a position near a middle part of a side of the cylinder 1 and is communicated with the filter chamber 15. Preferably, the water outlet 12 is arranged in a vertically downward direction.
According to the cleaning device for the drain valve of the oil-gas field separator, the inlets at the two ends of the cylinder, the sand outlet and the water outlet at the side part form the tee joint similar to the T-shaped structure, when the drain valve works, liquid enters the pipeline through the filter screen under the action of gravity to reach the inside of the drain valve cylinder, the floating ball in the water valve cylinder drives the valve core on the connecting rod to move upwards under the action of buoyancy, the valve core and the valve seat channel are opened, automatic liquid discharge is realized under the pressure difference in the water valve cylinder, solid impurities are accumulated on the inner wall of the filter screen under the interception of the filter screen, the solid impurities are discharged into the sand storage tank from the pipeline connected with the sand outlet in a manual liquid discharge mode, the problem that the sealing surface is damaged after the impurities enter the drain valve is effectively eliminated, the normal work of the drain valve is not influenced, and solid particles in the sand setting cavity are discharged.
Specifically, in the present embodiment, the screen 2 is a 80-300 mesh screen. The filter screen of the structural form can meet the cleaning requirement of the drain valve of the oil-gas field separator to a great extent. Further, in the present embodiment, the inlet 11, the outlet 12 and the sand outlet 13 are each provided with a mounting flange 4. Through setting up mounting flange on the entry, delivery port and the play sand mouth of above-mentioned "tee bend" structure, can improve whole cleaning device's installation maintenance and the convenience of operation to a great extent.
Further, as shown in fig. 2, in the present embodiment, the filter screen 2 is fixed to the inner wall of the cylinder 1 using a cone frame 3. Through the fixed filter screen of toper frame, ensure that the shape of filter screen does not change and fixed filter screen keeps apart into sand setting chamber and filtration strong in the barrel, can form toper filter screen structure, take little business turn over, when carrying out artifical manual emission, solid particle can not directly strike the filter screen, instead can remove along the filter screen inner wall surface, drive the solid particle of remaining on the filter screen, play the effect of clearance filter screen, after the interception solid particle, solid particle remains the sand setting intracavity of filter screen inner wall, because the filter screen sectional area of toper structure is greater than pipeline sectional area far away, be difficult to the jam filter screen. Specifically, the filter screen 2 is fixed on the conical frame 3 in a bonding or welding mode, the fixing mode is that the conical frame 3 is arranged inside the outer filter screen 2, a conical filter element with a support is formed in a combined mode, when liquid containing solid particles passes through the conical filter element, the liquid smoothly passes through the conical filter element, the solid particles are intercepted on the filter element, and after the solid particles are intercepted, the solid particles are left in a sand setting cavity on the inner wall of the filter screen, so that the effect of filtering the liquid is achieved. Specifically, in the present embodiment, the conical frame 3 is made of steel having a taper of between 1:10 and 1:5. The conical frame with the structural form can ensure the fixation and the support of the filter screen to a great extent.
Further, as shown in fig. 2, in this embodiment, a sealing member 5 is provided between an end of the screen 2 near the sand outlet 13 and an inner wall of the cylinder 2. Specifically, the conical frame 3 is welded on the cyclone tube 6 at the inlet end, and the adhesive sealing rubber strip is adopted at the outlet end, so that the sealing effect of the closed end can be effectively ensured by arranging the sealing component, and the influence of solid particles on the filtering effect caused by the solid particles entering the filtering cavity can be effectively avoided.
Further, as shown in fig. 2, in the present embodiment, a swirl tube 6 is provided at the inlet 11. The swirl tube can not influence the drainage effect of the drain valve when in use, and can guide liquid to flow in the tangential direction when the liquid flows only by adopting manual liquid drainage, so as to drive solid particles intercepted on the filter screen and improve the sand drainage effect. Further, in the present embodiment, the swirl tube 6 includes a seamless tube and two or more sets of helical blades arranged on the inner wall of the seamless tube. The swirl tube 6 adopts a way that a plurality of spiral blades are welded on the inner wall of the seamless tube and connected with the inlet of the conical frame 3, the inner diameter of the swirl tube is slightly smaller than the inner diameter of the inlet pipeline, when flowing liquid and natural gas pass through the swirl pipeline, the flow speed is increased, under the guidance of the plurality of spiral blades, the liquid and the natural gas can rotationally flow in a filter screen supported by the conical frame, the solid particle flow intercepted on the filter screen is driven, and then the discharged liquid enters the storage tank, so that the aim of cleaning impurities without dismantling the device is fulfilled.
Further, in this embodiment, the diameters of the two ends of the cylinder 1 are respectively consistent with the diameters of the outlet end of the discharge pipeline of the separator 100 and the diameter of the pipeline connected with the inlet end of the sand storage tank 300, the diameter of the middle part of the cylinder 1 is larger than the diameter of the two ends of the cylinder 1, and the two ends of the cylinder 1 are in transitional connection with the middle part of the cylinder 1 by adopting a gradually expanding arc structure. The barrel adopts two sections of structures with small outer diameters and large middle diameters, the diameters of the filter screen inlet and the sand outlet are consistent with the diameters of the connecting pipelines, firstly, the filter element is prevented from being damaged due to pipeline reducing or flow velocity and other reasons, secondly, the interception area of the filter screen entering the drain valve is increased, and thirdly, the volume of solid impurities remained on the inner surface of the filter element is increased. And not only can the installation of the cylinder body and the conical frame be satisfied, but also enough space filter cavities and sand settling cavities can be formed in the cylinder body. Specifically, in a preferred embodiment, the middle of the barrel is of cylindrical configuration. The cylinder body with the cylindrical structure is easy to process and manufacture and convenient to install and arrange.
According to the embodiment, the cleaning device for the drain valve of the oil-gas field separator provided by the invention has the advantages that when the cleaning device is used, solids and liquid in the separator flow into the drain valve cylinder body under the gravity, the solids are intercepted by the filter screen arranged in the cylinder body and remain in the filter screen, the filtered liquid enters the drain valve cylinder body, automatic liquid discharge is realized, the solids in the filter screen are discharged into the storage tank by adopting a manual discharging process, the discharge of the solids and the liquid is realized, and the problem that the sealing surface is damaged after impurities enter the drain valve is effectively solved.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A cleaning device for a drain valve of an oil-gas field separator is characterized by comprising a cylinder; wherein,
the cylinder body comprises an inlet connected with the outlet end of the separator discharge pipeline, a water outlet connected with the inlet end of the drain valve and a sand outlet connected with the inlet end of the sand storage tank;
the inlet and the sand outlet are positioned at two opposite ends of the cylinder;
a filter screen is arranged in the cylinder, two ends of the filter screen are respectively connected with the inlet and the inner wall close to one end of the sand outlet, and one end of the filter screen close to the sand outlet is a closed end, so that the cylinder is divided into a sand setting cavity and a filter cavity;
the water outlet is positioned at the side part of the cylinder body and is communicated with the filter cavity.
2. The cleaning apparatus for a trap of an oil and gas field separator of claim 1, wherein said screen is secured to an inner wall of said cylinder using a conical shelf.
3. The cleaning apparatus for a trap of an oil and gas field separator of claim 2, wherein the conical shelf is comprised of steel shelves having a taper of between 1:10 and 1:5.
4. A cleaning apparatus for a trap of an oil and gas field separator according to any one of claims 1 to 3 wherein a sealing member is provided between an end of the screen adjacent the sand outlet and the inner wall of the barrel.
5. A cleaning apparatus for a trap in an oil and gas field separator according to any one of claims 1 to 3 wherein a swirl tube is provided at the inlet.
6. The cleaning apparatus for a trap of an oil and gas field separator of claim 5, wherein said cyclone tube comprises a seamless tube and two or more sets of helical blades disposed on an inner wall of said seamless tube.
7. A cleaning apparatus for a trap in an oil and gas field separator according to any one of claims 1 to 3 wherein the diameter of the ends of the barrel is respectively the same as the diameter of the outlet end of the separator discharge line and the diameter of the line connecting the inlet end of the sand storage tank, the diameter of the middle part of the barrel is larger than the diameter of the ends of the barrel, and the ends of the barrel are in transition connection with the middle part of the barrel by adopting a divergent circular arc structure.
8. The cleaning apparatus for a trap of an oil and gas field separator of claim 7, wherein the middle portion of the cylinder is of cylindrical configuration.
9. A cleaning apparatus for a trap in an oil and gas field separator according to any one of claims 1 to 3 wherein the screen is a 80 to 300 mesh screen.
10. A cleaning apparatus for a trap for an oil and gas field separator according to any one of claims 1 to 3 wherein the inlet, the outlet and the sand outlet are each provided with a mounting flange.
CN202210514071.8A 2022-05-11 2022-05-11 Cleaning device for drain valve of oil-gas field separator Pending CN117085402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210514071.8A CN117085402A (en) 2022-05-11 2022-05-11 Cleaning device for drain valve of oil-gas field separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210514071.8A CN117085402A (en) 2022-05-11 2022-05-11 Cleaning device for drain valve of oil-gas field separator

Publications (1)

Publication Number Publication Date
CN117085402A true CN117085402A (en) 2023-11-21

Family

ID=88780888

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210514071.8A Pending CN117085402A (en) 2022-05-11 2022-05-11 Cleaning device for drain valve of oil-gas field separator

Country Status (1)

Country Link
CN (1) CN117085402A (en)

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