CN114635976B

CN114635976B - Detection valve for crude oil production conveying pipeline

Info

Publication number: CN114635976B
Application number: CN202210530710.XA
Authority: CN
Inventors: 刘同玲; 连业春; 朱彩红; 范璇; 李贞�; 付文登; 崔宝珠; 陈萌; 侯文雯; 赵霞湖; 董帅帅; 伦淑勇
Original assignee: Shandong Sichuang Petroleum Machinery Co ltd
Current assignee: Shandong Sichuang Petroleum Machinery Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-07-29
Anticipated expiration: 2042-05-16
Also published as: CN114635976A

Abstract

The invention belongs to the field of detection valves, and discloses a detection valve for a crude oil production conveying pipeline, which comprises a shell, wherein the left end and the right end of the shell are fixedly connected with flange plates, threaded holes which are uniformly distributed are formed in the flange plates close to the edge positions, the center position in the shell is provided with a valve core, the center position of the upper surface of the valve core is fixedly connected with a first screw rod, and the upper end of the first screw rod penetrates through the shell and is fixedly connected with a rotating disc; can realize when crude oil flows through the elevator, because the elevator is different at both ends pressure differential about the elevator, the elevator rises, after the check valve is closed, the elevator drives the impurity of brush clearance adhesion on the filter screen surface because of gravity whereabouts, has avoided the problem that impurity blockked up the filter screen, in the twinkling of an eye that the check valve was closed in addition, crude oil can strike the buffer block in the twinkling of an eye, and the buffer block can remove to activity intracavity portion, realizes the release, reduces the impact force of crude oil to the case.

Description

Detection valve for crude oil production conveying pipeline

Technical Field

The invention relates to the field of detection valves, in particular to a detection valve for a crude oil production and conveying pipeline.

Background

The crude oil is required to be conveyed into the oil storage tank through a pipeline after production is finished, the oil storage tank is generally connected with the pipeline through a detection valve and used for controlling the opening and closing of an oil way, and meanwhile, the detection valve can also be used for detecting the flow speed and the flow of the crude oil.

The crude oil flowing through the detection valve inevitably contains impurities, the impurities are easily attached to the valve core of the detection valve, and along with the accumulation of the impurities, when the valve core inside the detection valve is controlled, the valve core can become difficult to adjust, so that the detection valve is difficult to close.

In addition, at the moment that the detection valve closes the oil way, the flowing crude oil continues to move forwards, the pressure intensity of one surface, facing the oil coming direction, of the valve core of the detection valve is suddenly increased instantly, the valve core is impacted instantly, the valve core is often impacted by the crude oil, the valve core is damaged, and therefore the detection valve cannot be used normally.

Generally can install sealing rubber additional between the two when detection valve and pipe connection among the prior art and strengthen leakproofness between the two, but sealing rubber can be because oxidation corrosion's problem when using for a long time, cause sealing rubber to lose sealed effect, the problem of oil leak can appear in the junction of valve and pipeline, when both junctions just begin the oil leak, the interval time that oil drips is very for a long time, be difficult for discovering, the staff can not in time change the detection valve, thereby can produce the extravagant problem with environmental pollution of crude oil.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a detection valve for a crude oil production conveying pipeline, which can remove impurities through the filtration of a filter screen when crude oil flows through the interior of the detection valve, so that the impurities are reduced to a certain extent and attached to a valve core, the service life of the valve core is prolonged, the service life of the detection valve is prolonged, and when the crude oil flows through a lifting block, the lifting block rises due to different pressure differences between the upper end and the lower end of the lifting block, and after the detection valve is closed, the lifting block falls along with gravity to drive a brush to clean the impurities adhered to the surface of the filter screen, so that the problem that the filter screen is blocked by the impurities is avoided.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a detection valve for a crude oil production conveying pipeline comprises a shell, wherein flange plates are fixedly connected to the left end and the right end of the shell, threaded holes which are uniformly distributed are formed in the positions, close to the edge, of the inner portion of each flange plate, a valve core is arranged in the center of the inner portion of the shell, a first lead screw is fixedly connected to the center of the upper surface of the valve core, the upper end of the first lead screw penetrates through the shell and is fixedly connected with a rotating disc, and the outer circular surface of the first lead screw is connected with the shell through threads;

one end of the shell is provided with a processing box in a penetrating way, the side surface of the processing box is fixedly connected with the shell, the inner wall of the treatment box is fixedly connected with a first supporting rod, one side of the first supporting rod is connected with a connecting rod in a sliding way, the side surface of one end of the connecting rod is fixedly connected with a brush, the other end of the connecting rod is fixedly connected with a lifting block, the upper surface of the lifting block is streamline, the lower surface of the lifting block is designed to be a plane, the inner wall of the treatment box is fixedly connected with second support rods at the two sides of the first support rod, a filter screen is arranged on one side of the first supporting rod, a pressing strip is arranged on the side surface of the lower end of the filter screen, one end of the pressing strip is fixedly connected with the inner wall of the treatment box, the side surface of the upper end of the filter screen is tightly abutted to be provided with a pressing block, and the lower end of the treatment box is fixedly connected with a collection bottle.

Furthermore, the filter screen is installed in an inclined manner, and the horizontal included angle of the installation is 40 degrees to 50 degrees.

Further, the lower extreme of handling the case is the design of drawing in, the lower extreme inner wall fixedly connected with of handling the case stores up the ball room, the inside of storing up the ball room is provided with the valve ball, one side fixedly connected with second lead screw of valve ball, the one end of second lead screw runs through and handles case and fixedly connected with rotor, the receiving flask passes through screw thread fixed connection with the processing case.

Furthermore, the collecting bottle is made of transparent materials.

Further, the upper end fixedly connected with apron of briquetting, the upper surface of apron all is provided with the screw in the turning, the lower extreme of screw runs through the apron and extends to the inside of handling the case, the screw passes through screw thread fixed connection with handling the case.

Furthermore, a movable cavity is formed in the valve core, springs are fixedly connected to the inner wall of the upper end of the movable cavity and are evenly distributed, a buffer block is fixedly connected to the lower end of each spring, and the buffer blocks are connected with the valve core in a sliding mode.

Furthermore, the lower extreme of buffer block is the design of arc structure.

Furthermore, a limiting block is fixedly connected to the center of the inner wall of the upper end of the movable cavity.

Furthermore, the outer surface of one side of the flange plate is fixedly connected with sealing rubber, the position, close to the edge, inside the sealing rubber is fixedly connected with oil-absorbing resin, and one part of the inner circular surface of the oil-absorbing resin extends towards the inner circular surface of the sealing rubber.

Further, the outer circular surface of the sealing rubber is fixedly connected with a layer of transparent film, the inner circular surface of the transparent film is in contact with the oil-absorbing resin, and the transparent film is made of flexible materials.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) when crude oil flows through the interior of the detection valve, impurities are removed through the filtration of the filter screen, so that the impurities are reduced to be attached to the valve core to a certain extent, the service life of the detection valve is prolonged, when the crude oil flows through the lifting block, the lifting block rises due to different pressure differences of the upper end and the lower end of the lifting block, and after the detection valve is closed, the lifting block falls along with gravity to drive the brush to clean the impurities adhered to the surface of the filter screen, so that the problem that the filter screen is blocked by the impurities is avoided.

(2) According to the invention, the filter screen can be impacted when crude oil flows through, the pressing block and the pressing bar respectively abut against the upper end and the lower end of the filter screen, the first supporting rod and the second supporting rod are arranged to support the filter screen, so that the filter screen is fixed, the filter screen is prevented from being washed away by the flowing crude oil, when the filter screen needs to be replaced, the filter screen in the treatment box can be taken out by screwing off the screw and then taking off the cover plate, and the operation is simple and convenient.

(3) At the moment that the detection valve is closed, crude oil impacts the buffer block, the buffer block moves towards the inner part of the movable cavity and compresses the spring to realize pressure relief, the impact force of the crude oil on the valve core is reduced, and the effect of protecting the valve core is further realized.

(4) When the sealing rubber loses the sealing performance, the crude oil can gradually leak along the joint to cause the crude oil to leak to the oil absorption resin, the oil absorption resin can absorb the crude oil and expand to increase, so that the joint of the detection valve recovers the sealing performance again, and a worker can judge whether the detection valve leaks or not by observing whether the oil absorption resin changes color or not.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view taken at point A of FIG. 2 in accordance with the present invention;

FIG. 4 is a half sectional view of the inside of the treatment tank of the present invention;

FIG. 5 is a half sectional view of the sealing rubber of the present invention;

FIG. 6 is a side view of the sealing rubber of the present invention.

The reference numbers in the figures illustrate:

1. a housing; 2. a flange plate; 3. a threaded hole; 4. a valve core; 5. a first lead screw; 6. rotating the disc; 7. a treatment tank; 8. a lifting block; 9. a connecting rod; 10. a brush; 11. a first support bar; 12. a filter screen; 13. layering; 14. collecting a bottle; 15. a ball storage chamber; 16. a valve ball; 17. a second lead screw; 18. a rotating sheet; 19. a cover plate; 20. a screw; 21. a movable cavity; 22. a buffer block; 23. a spring; 24. a limiting block; 25. sealing rubber; 26. a transparent film; 27. an oil-absorbing resin; 28. briquetting; 29. a second support bar.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, 2, 3 and 4, a detection valve for a crude oil production and transportation pipeline comprises a housing 1, wherein flanges 2 are fixedly connected to the left and right ends of the housing 1, threaded holes 3 are uniformly distributed in the flanges 2 near the edge, a valve core 4 is arranged in the center of the housing 1, a first screw rod 5 is fixedly connected to the center of the upper surface of the valve core 4, the upper end of the first screw rod 5 penetrates through the housing 1 and is fixedly connected with a rotating disc 6, and the outer circular surface of the first screw rod 5 is in threaded connection with the housing 1;

the device comprises a shell 1, a treatment box 7 is arranged at one end of the shell 1 in a penetrating mode, the side surface of the treatment box 7 is fixedly connected with the shell 1, a first supporting rod 11 is fixedly connected to the inner wall of the treatment box 7, a connecting rod 9 is slidably connected to one side of the first supporting rod 11, a brush 10 is fixedly connected to the side surface of one end of the connecting rod 9, an elevating block 8 is fixedly connected to the other end of the connecting rod 9, the upper surface of the elevating block 8 is streamline, the lower surface of the elevating block 8 is in a planar design, second supporting rods 29 are fixedly connected to two sides of the first supporting rod 11 on the inner wall of the treatment box 7, a filter screen 12 is arranged on one side of the first supporting rod 11, a pressing strip 13 is arranged on the side surface of the lower end of the filter screen 12, one end of the pressing strip 13 is fixedly connected with the inner wall of the treatment box 7, and a pressing block 28 is arranged on the side surface of the upper end of the filter screen 12 in a supporting mode, the lower end of the treatment box 7 is fixedly connected with a collecting bottle 14.

As shown in fig. 3, the filter screen 12 is installed in an inclined manner, and the horizontal included angle of the installation is 40 degrees to 50 degrees.

As shown in fig. 2, the lower end of the treatment tank 7 is in a furled design, the inner wall of the lower end of the treatment tank 7 is fixedly connected with a ball storage chamber 15, a valve ball 16 is arranged in the ball storage chamber 15, one side of the valve ball 16 is fixedly connected with a second lead screw 17, one end of the second lead screw 17 penetrates through the treatment tank 7 and is fixedly connected with a rotating sheet 18, and the collection bottle 14 is fixedly connected with the treatment tank 7 through threads.

As shown in fig. 1, the collection bottle 14 is made of a transparent material.

As shown in fig. 2, a cover plate 19 is fixedly connected to the upper end of the pressing block 28, screws 20 are disposed on the upper surface of the cover plate 19 at the corners, the lower ends of the screws 20 penetrate through the cover plate 19 and extend into the treatment tank 7, and the screws 20 are fixedly connected with the treatment tank 7 through threads.

When impurities exist in the flowing crude oil, the impurities are easily attached to the valve core 4 of the detection valve, and along with the accumulation of the impurities, the valve core 4 is difficult to adjust, so that the detection valve is difficult to close; according to the invention, an operator is required to connect an oil inlet end of a shell 1 with an oil delivery pipe of crude oil, and screws the oil inlet end and the oil delivery pipe through a threaded hole 3 by a bolt, so that the shell 1 is fixedly connected with a flange 2 on the oil delivery pipe, the flange 2 at the other end of the shell 1 is fixed on an oil discharge pipe or an oil storage tank, when a detection valve is required to be closed or opened, a rotating disc 6 is rotated to drive a first screw rod 5 to rotate, so that the first screw rod drives a valve core 4 to tightly abut against the inside of the shell 1, the detection valve is closed at the moment, in addition, the first screw rod 5 drives the valve core 4 to tightly abut against the inner wall of the upper end of the shell 1, and the detection valve is opened at the moment.

When crude oil flows through the interior of the detection valve, because the upper end of the lifting block 8 is in a streamline shape and the lower end is in a plane, the pressure difference between the upper end and the lower end of the lifting block 8 is different, the pressure intensity of the upper end is small, the pressure intensity of the lower end is large, and the lifting block 8 can drive the connecting rod 9 to slide upwards along the first supporting rod 11; crude oil flowing through the filter screen 12, the filter screen 12 can filter impurities in the crude oil, the filter screen 12 is obliquely installed, the filtered impurities can slide down along the gradient of the filter screen 12 and fall to the bottom of the treatment box 7, the lower end of the treatment box 7 is in a furled design, the impurities which fall conveniently slide into the collection bottle 14, after the detection valve is closed, no crude oil flows through the lifting block 8 any more, the lifting block 8 falls along with gravity, the connecting rod 9 is driven to slide along with the first supporting rod 11, the brush 10 is installed on the connecting rod 9, the brush 10 can clean impurities adhered to the surface of the filter screen 12 when falling along with the connecting rod 9, the problem that the filter screen 12 is blocked by the impurities is avoided, finally, the impurities fall into the collection bottle 14 along with gravity, whether the impurities in the collection bottle 14 need to be cleaned or not is judged by observing the collection bottle 14, when the collection bottle 14 needs to be cleaned, the rotating piece 18 drives the second screw rod 17 to rotate, the valve ball 16 is pressed against the inner wall of the processing box 7, so that a passage for impurities to fall is closed, and a passage for crude oil to leak outwards is also closed; then the collecting bottle 14 is unscrewed, the impurities in the collecting bottle 14 are cleaned, the collecting bottle 14 is fixed at the lower end of the processing box 7 after the cleaning is finished, and then the rotating sheet 18 is rotated to drive the second screw rod 17 to move towards the ball storage chamber 15, so that the passage for the impurities to fall is opened.

Can strike filter screen 12 when the crude oil stream passes through filter screen 12, briquetting 28 and layering 13 support the upper and lower both ends of tight filter screen 12 respectively, and the first bracing piece 11 and the second bracing piece 29 of installation are used for supporting filter screen 12, realize the fixed to filter screen 12, avoid filter screen 12 to be washed away by the crude oil of flowing through, when filter screen 12 needs to be changed, through twisting off screw 20 then take off apron 19 alright take out filter screen 12 in the processing case 7, and easy operation is convenient.

As shown in fig. 2, a movable cavity 21 is formed in the valve core 4, the inner wall of the upper end of the movable cavity 21 is fixedly connected with springs 23 which are uniformly distributed, the lower end of each spring 23 is fixedly connected with a buffer block 22, and the buffer blocks 22 are slidably connected with the valve core 4.

As shown in fig. 2, the lower end of the buffer block 22 is designed to be an arc structure.

As shown in fig. 2, a limiting block 24 is fixedly connected to the center of the inner wall of the upper end of the movable cavity 21.

At the moment that the detection valve closes the oil way, the flowing crude oil continues to move forwards, so that the pressure inside the detection valve is increased instantly, the valve core 4 is impacted instantly, the valve core 4 is often impacted by the crude oil, the valve core 4 is easily damaged, and the detection valve cannot be normally used; at the moment that the detection valve is closed, crude oil impacts the buffer block 22, the buffer block 22 moves towards the interior of the movable cavity 21 and compresses the spring 23, pressure relief is achieved, the impact force of the crude oil on the valve core 4 is reduced, and the valve core 4 is protected; when the impact force of crude oil is too big, can cause the compression spring 23 of the very big dynamics of buffer block 22, cause spring 23 to lose the ability of deformation easily, avoid the deformation volume of spring 23 compression too big through installation stopper 24, play the effect of protection spring 23.

As shown in fig. 5 and 6, a sealing rubber 25 is fixedly connected to an outer surface of one side of the flange 2, an oil-absorbing resin 27 is fixedly connected to a position close to an edge inside the sealing rubber 25, and a part of an inner circumferential surface of the oil-absorbing resin 27 extends toward the inner circumferential surface of the sealing rubber 25.

As shown in fig. 5 and 6, a transparent film 26 is fixedly connected to an outer circumferential surface of the sealing rubber 25, an inner circumferential surface of the transparent film 26 is in contact with the oil-absorbing resin 27, and the transparent film 26 is made of a flexible material.

When the valve is connected with a pipeline, the sealing rubber 25 is generally arranged between the valve and the pipeline to improve the sealing performance between the valve and the pipeline, but the sealing rubber 25 loses the sealing effect due to the problem of oxidation corrosion after being used for a long time, and the problem of oil leakage can occur at the joint of the valve and the pipeline, for example, oil drops drip, the oil leakage amount is less at the initial stage of oil leakage, the dripping interval time is longer, so that the oil leakage position is not easy to find, the detection valve cannot be replaced in time, and the problem of crude oil waste is caused; according to the invention, when the sealing rubber 25 loses the sealing effect, crude oil can gradually leak along the joint, so that the crude oil leaks to the oil absorption resin 27, the oil absorption resin 27 can absorb the crude oil and expand to increase, so that the joint of the detection valve can recover the sealing performance again, although the joint of the detection valve can recover the sealing performance temporarily, the recovered sealing performance is temporary and cannot be used for a long time, the oil absorption resin 27 is generally pure white and has the same color with the crude oil after oil absorption, a worker can judge whether the detection valve leaks or not by observing whether the oil absorption resin 27 changes color, and the transparent film 26 is installed to avoid the problem that the surface of the oil absorption resin 27 is difficult to observe due to ash falling.

The working principle is as follows: when crude oil flows through the interior of the detection valve, because the upper end of the lifting block 8 is in a streamline shape and the lower end is in a plane, the pressure difference between the upper end and the lower end of the lifting block 8 is different, the pressure intensity of the upper end is small, the pressure intensity of the lower end is large, and the lifting block 8 can drive the connecting rod 9 to slide upwards along the first supporting rod 11; crude oil flowing through the crude oil collecting device passes through a filter screen 12, the filter screen 12 filters impurities in the crude oil, the filter screen 12 is obliquely installed, the filtered impurities can slide down along the gradient of the filter screen 12 and fall to the bottom of a treatment box 7, the lower end of the treatment box 7 is in a furled design, the fallen impurities can slide into a collecting bottle 14 conveniently, after a detection valve is closed, no crude oil flows through a lifting block 8 any more, the lifting block 8 falls along with gravity, a connecting rod 9 is driven to slide along a first supporting rod 11 together, a hairbrush 10 is installed on the connecting rod 9, the hairbrush 10 can clean the impurities adhered to the surface of the filter screen 12 when falling along with the connecting rod 9, the problem that the filter screen 12 is blocked by the impurities is avoided, finally the impurities fall into the collecting bottle 14 along with the gravity, whether the impurities in the collecting bottle 14 need to be cleaned is judged by observing the collecting bottle 14, when the collecting bottle 14 needs to be cleaned, a rotating piece 18 drives a second screw rod 17 to rotate, the valve ball 16 is pressed against the inner wall of the processing box 7, so that a passage for impurities to fall is closed, and a passage for crude oil to leak outwards is also closed; then the collecting bottle 14 is unscrewed, the impurities in the collecting bottle 14 are cleaned, the collecting bottle 14 is fixed at the lower end of the processing box 7 after the cleaning is finished, and then the rotating sheet 18 is rotated to drive the second screw rod 17 to move towards the ball storage chamber 15, so that the passage for the impurities to fall is opened.

In the twinkling of an eye is closed at the check valve, buffer block 22 can be strikeed to crude oil, and buffer block 22 can be to the inside removal of activity chamber 21 and compression spring 23, realizes the release, reduces crude oil to case 4's impact force, and then realizes protecting case 4's effect, because buffer block 22's lower extreme is the arc design, be convenient for disperse the arc of buffer block to crude oil's impact force on the surface to reduce the crude oil impact dynamics that case 4 department received.

When the sealing rubber 25 loses the leakproofness, crude oil can leak along the junction gradually, cause crude oil seepage to oil absorption resin 27 department, oil absorption resin 27 can absorb crude oil and expand the grow, make its junction of detection valve resume the leakproofness again, although the leakproofness of detection valve has resumed the leakproofness, the leakproofness this moment is temporary, can not use for a long time, oil absorption resin 27 is pure white generally, can be the same with the colour of crude oil after the oil absorption, the staff can judge whether the detection valve appears leaking through observing whether oil absorption resin 27 discolours.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A crude oil production is check valve for pipeline, includes casing (1), its characterized in that: the left end and the right end of the shell (1) are fixedly connected with flange plates (2), threaded holes (3) which are uniformly distributed are formed in the positions, close to the edge, of the inner parts of the flange plates (2), a valve core (4) is arranged in the center of the inner part of the shell (1), a first lead screw (5) is fixedly connected to the center of the upper surface of the valve core (4), the upper end of the first lead screw (5) penetrates through the shell (1) and is fixedly connected with a rotating disc (6), and the outer circular surface of the first lead screw (5) is connected with the shell (1) through threads; the one end of casing (1) is run through and is provided with processing case (7), the side surface and casing (1) fixed connection of processing case (7), the inner wall fixedly connected with first bracing piece (11) of processing case (7), one side sliding connection of first bracing piece (11) has connecting rod (9), the one end side surface fixedly connected with brush (10) of connecting rod (9), the other end fixedly connected with lifter block (8) of connecting rod (9), the upper surface of lifter block (8) is streamlined, the lower surface of lifter block (8) is planar design, the both sides that the inner wall of processing case (7) is located first bracing piece (11) all fixedly connected with second bracing piece (29), one side of first bracing piece (11) is provided with filter screen (12), the lower extreme side surface of filter screen (12) is provided with layering (13), one end of the pressing strip (13) is fixedly connected with the inner wall of the processing box (7), the side surface of the upper end of the filter screen (12) is tightly abutted to a pressing block (28), the lower end of the processing box (7) is fixedly connected with a collecting bottle (14), and the brush (10) can clean impurities adhered to the surface of the filter screen (12) when descending along with the connecting rod (9).

2. The check valve for crude oil production transfer piping according to claim 1, wherein: the filter screen (12) is installed in an inclined mode, and the horizontal included angle of installation is 40 degrees to 50 degrees.

3. The check valve for crude oil production transfer piping according to claim 1, wherein: the lower extreme of handling case (7) is and draws in the design in, the lower extreme inner wall fixedly connected with of handling case (7) stores up ball room (15), the inside of storing up ball room (15) is provided with valve ball (16), one side fixedly connected with second lead screw (17) of valve ball (16), the one end of second lead screw (17) runs through and handles case (7) and fixedly connected with rotor (18), receiving flask (14) with handle case (7) and be through screw thread fixed connection.

4. The check valve for crude oil production transfer piping according to claim 3, wherein: the collecting bottle (14) is made of transparent materials.

5. The check valve for a crude oil production pipeline as claimed in claim 1, wherein: the upper end fixedly connected with apron (19) of briquetting (28), the upper surface of apron (19) is located the corner and all is provided with screw (20), the lower extreme of screw (20) runs through apron (19) and extends to the inside of handling case (7), screw (20) pass through screw thread fixed connection with handling case (7).

6. The check valve for a crude oil production pipeline as claimed in claim 1, wherein: the novel valve is characterized in that a movable cavity (21) is formed in the valve core (4), the inner wall of the upper end of the movable cavity (21) is fixedly connected with springs (23) which are uniformly distributed, the lower end of each spring (23) is fixedly connected with a buffer block (22), and the buffer blocks (22) are connected with the valve core (4) in a sliding mode.

7. The check valve for a crude oil production pipeline as claimed in claim 6, wherein: the lower end of the buffer block (22) is designed to be of an arc-shaped structure.

8. The check valve for a crude oil production pipeline as claimed in claim 6, wherein: the center of the inner wall of the upper end of the movable cavity (21) is fixedly connected with a limiting block (24).

9. The check valve for crude oil production transfer piping according to claim 1, wherein: the outer surface of one side of the flange plate (2) is fixedly connected with sealing rubber (25), the position, close to the edge, inside the sealing rubber (25) is fixedly connected with oil-absorbing resin (27), and one part of the inner circular surface of the oil-absorbing resin (27) extends towards the inner circular surface of the sealing rubber (25).

10. The check valve for crude oil production transfer piping according to claim 9, wherein: the outer circular surface of the sealing rubber (25) is fixedly connected with a layer of transparent film (26), the inner circular surface of the transparent film (26) is in contact with the oil-absorbing resin (27), and the transparent film (26) is made of a flexible material.