CN117028635A - Petroleum transmission pipeline flat valve assembly and use method thereof - Google Patents

Abstract

The application relates to the technical field of petroleum transmission, in particular to a flat valve assembly of a petroleum transmission pipeline and a use method thereof. According to the application, through mutual combination of the two valve bodies and the first valve body, the two valve bodies are idle during daily use, the use frequency of the two valve bodies is reduced, the service life of the two valve bodies is further prolonged, when the first valve body is frequently operated, the failure rate of the first valve body is higher than that of the two valve bodies, when the first valve body is damaged, the two valve bodies are closed, the transmission of petroleum is blocked, and then the first valve body is disassembled and installed by rotating the fixed sleeve and using the fixed assembly.

Description

Petroleum transmission pipeline flat valve assembly and use method thereof

Technical Field

The application relates to a flat valve assembly, in particular to a flat valve assembly of an oil transmission pipeline and a use method thereof, and belongs to the technical field of oil transmission.

Background

The petroleum transmission pipeline consists of oil pipe and its accessories, and is equipped with corresponding oil pump unit according to the technological process, and is designed and installed into a complete pipeline system for completing oil material receiving and transferring tasks. The oil pipeline mainly comprises isothermal conveying, heating conveying, sequential conveying and other conveying processes. Oil pipelines have become one of the main transportation tools for petroleum and still have considerable development potential in the future.

In petroleum transmission pipeline, the plate valve has the vital effect to the connection and the control flow between the pipeline, receive weather or influence of factors such as live time, the plate valve also can take place to damage, if frequent use plate valve is controlled the petroleum flow in the pipeline, receive the impact force of oil and the frictional force influence between valve body and flashboard in the plate valve itself, the plate valve can accelerate reduction life, if need to maintain or change the plate valve this moment, then need to close the plate valve at pipeline both ends that are connected with the plate valve that needs to maintain, ensure that the oil no longer flows, so guarantee can not influence maintenance or change the plate valve that has damaged, but when the plate valve at pipeline both ends closes, can remain the oil in the pipeline between the plate valve after damaged plate valve and closing, after dismantling the damaged plate valve, the oil can flow in from the pipeline, if collect these oils, the process can be more loaded down with trivial details, abandon then can cause the waste of resource, with this will cause on the plate valve to flow out when maintaining or changing, can be loaded down with trivial details to the process can cause more simultaneously to carry out the valve to the valve when changing.

Accordingly, there is a need for an improved oil transfer line plate valve assembly that addresses the above-described problems.

Disclosure of Invention

The application aims to provide a flat valve assembly of a petroleum transmission pipeline and a use method thereof, wherein the flat valve assembly can be mutually combined between two valve bodies and a first valve body, the first valve body is used for operating the flat valve assembly when the petroleum flow is controlled in daily use, and the two valve bodies are idle, so that the use frequency of the two valve bodies is reduced, the service life of the two valve bodies is further prolonged, when the first valve body is frequently operated, the failure rate of the first valve body is higher than that of the two valve bodies, when the first valve body is damaged, the two valve bodies are closed, the transmission of petroleum is blocked, then the fixed sleeve is rotated, the fixed assembly is used for disassembling and assembling the first valve body, the operation is convenient in the disassembling and assembling process, in addition, the tool used by the device is less in emergency treatment, and the damaged valve body is convenient and quick to replace.

In order to achieve the above purpose, the main technical scheme adopted by the application comprises the following steps: the utility model provides a petroleum transmission pipeline flat valve subassembly, includes a valve body, a valve body both sides lateral wall communicates respectively and has had a No. one to lead oil pipe, and two No. one leads oil pipe lateral wall and all has seted up a thread groove and straight line groove, two a No. one lead oil pipe and keep away from a one end of valve body and lead oil pipe respectively swing joint No. two, no. two lead oil pipe and No. two lead oil pipe junction and be equipped with the sealing washer piece respectively, two No. two lead oil pipe and keep away from two a No. one lead oil pipe's one end and communicate respectively and have No. two valve bodies, two No. two valve bodies are kept away from two one side lateral walls of leading oil pipe communicate respectively and have oil inlet tube and oil outlet tube, two No. one lead oil pipe surface and are respectively overlapped and are equipped with fixed sleeve, just fixed sleeve with No. one lead oil pipe lateral wall and No. two and lead oil pipe lateral wall and slide connection respectively, fixed sleeve is close to No. one and lead oil pipe's one end lateral wall and be equipped with the sealing washer piece respectively, no. two lead oil pipe's one end lateral wall and be close to one end and be equipped with two and lead oil pipe lateral wall and be connected with two and spiral groove and one side is fixed with two and is equipped with one side of the fixed groove respectively.

Preferably, two fixed sleeves are close to two the outer side walls of one end of the second oil guide pipe are respectively provided with a fixed protrusion, the sliding protrusions are respectively connected with the linear groove and the first thread groove in a sliding mode, the first thread groove is communicated with the linear groove, and the first thread groove is consistent with the second thread groove in thread pitch.

Preferably, the fixed subassembly includes a plurality of connecting rod, swivel becket, a plurality of set square, a plurality of slide bar and a plurality of arc grip block, a plurality of connecting rod one end fixed connection is in No. two valve bodies are close to on No. one valve body one side lateral wall, and a plurality of the connecting rod centers on No. two oil pipe center axle center equidistance settings, a plurality of the connecting rod other end respectively with a plurality of slide bar sliding connection, a plurality of arc grip block lateral wall respectively fixed connection is in a plurality of slide bar one end, a plurality of set square respectively with a plurality of slide bar other end sliding connection, a plurality of set square one side lateral wall equal fixed connection is in swivel becket inside wall.

Preferably, the sliding rods, the arc clamping blocks and the triangular plates are all arranged around the center axis of the second oil guide pipe at equal intervals, the arc clamping blocks are mutually clamped, and the cylindrical inner side wall formed when the arc clamping blocks are mutually clamped is contacted with the outer side wall of the second oil guide pipe and the outer side wall of one end of the fixed sleeve.

Preferably, the outer side walls of the two fixing sleeves are provided with a plurality of concave fixing blocks, the concave fixing blocks are arranged around the center axis of the fixing sleeve at equal intervals, and the concave fixing blocks are hinged with a handheld rod.

Preferably, two the lateral wall of No. two valve body one side is fixedly connected with mount respectively, rotate on the mount and be connected with the threaded rod, threaded rod one end runs through the mount extends to mount one side and fixedly connected with handle No. one.

Preferably, two all be equipped with the dwang on the swivel becket lateral wall, two the dwang is close to one side lateral wall of No. two valve bodies all rotates and is connected with the dwang, the dwang is kept away from the one end rotation of dwang is connected with the screw thread piece, and with sliding connection about the screw thread piece, the screw thread piece with threaded rod threaded connection.

Preferably, the first valve body is rotationally connected with a second handle, the second handle is in threaded connection with a screw rod, the screw rod is located inside the first valve body, one end of the screw rod is fixedly connected with a sealing column, and one end of the sealing column, away from the screw rod, is fixedly connected with a flashboard.

Preferably, the flashboard up end fixedly connected with baffle, a valve body one side lateral wall is equipped with the pneumatic valve, the pneumatic valve is located be located in the valve body a space department above the baffle, two No. two be equipped with No. three handles on the valve body respectively, just No. three handles with a handle is located respectively No. two valve body both sides.

A method of using a petroleum transfer line flat valve assembly comprising the steps of:

s1: firstly, when the first valve body is required to be disassembled, the two third handles are respectively rotated to enable the two second valve bodies to respectively close the oil inlet pipe and the oil outlet pipe, so that the transmission of petroleum in the first oil guide pipe and the second oil guide pipe is blocked;

s2: then, respectively rotating the two first handles to enable the rotating ring to rotate, and further enabling the plurality of sliding rods to respectively slide on the plurality of connecting rods under the drive of the plurality of triangular plates, and further driving the plurality of arc-shaped clamping blocks to move towards the direction away from the central axis of the rotating ring, so that the inner side walls of the plurality of arc-shaped clamping blocks are far away from the outer side wall of one end of the fixed sleeve and the outer side wall of the second oil guide pipe, and the inner side walls of the plurality of arc-shaped clamping blocks are not contacted;

s3: then, rotate a plurality of handheld pole on two fixed sleeve lateral walls respectively, make its perpendicular and fixed sleeve's central axis, manually rotate a plurality of handheld pole and then drive fixed sleeve and take place to rotate, when fixed sleeve rotates, make No. two thread grooves and spiral line No. two thread grooves No. two thread grooves do not spin, when spin closes, the sliding protrusion is located the line groove and is linked together department with a thread groove this moment, pulls fixed sleeve to a valve body direction straight line, makes it thoroughly break away from No. two oil pipes.

S4: finally, when the two fixed sleeves are completely retracted, the valve body I can be taken down in the up-down direction so as to facilitate subsequent maintenance and replacement.

The application has at least the following beneficial effects:

1. through the mutual combination between two No. two valve bodies and the valve body, use the valve body to operate it when the daily use is controlled petroleum flow, idle two No. two valve bodies, thereby reduce the frequency of use of two No. two valve bodies, and then improve the life of two No. two valve bodies, when frequently operating the valve body, the fault rate that leads to the valve body is higher than two No. two valve bodies, when the valve body damages, close two No. two valve bodies, block the transmission of oil, then dismantle and install the valve body through rotating fixed sleeve and using fixed subassembly, in-process convenient operation with the installation, and when emergency treatment, the device uses less instrument, the valve body of convenient quick replacement processing damage, and in the in-process to this change valve body, the loss to the oil in the pipeline is less, the waste of resource has been reduced.

2. When the second handle is rotated, the screw rod is driven to move upwards, then the flashboard is driven to move upwards, when the screw rod moves upwards, the sealing column is fixedly connected to the screw rod and is slidably connected to the pipeline where the screw rod is located, the sealing column ensures the tightness between the cavity where the flashboard is located and the cavity where the screw rod is rotationally connected, the baffle plate further ensures the tightness of the upper space and the lower space which are defined by the baffle plate in the first cavity, and when the flashboard moves up and down to drive the baffle plate to move, compressed air and absorbed air in the flashboard are led in and led out through the air valve.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a cross-sectional view provided by the present application;

FIG. 3 is a schematic view of a fixing assembly according to the present application;

FIG. 4 is a schematic view of a portion of the structure provided by the present application;

FIG. 5 is an exploded view of a portion of the structure provided by the present application;

fig. 6 is a schematic cross-sectional view of a fixing sleeve according to the present application.

In the figure, a valve body 1 and a valve body I; 2. a first oil guide pipe; 3. a first thread groove; 4. a linear groove; 5. a second oil guide pipe; 6. spiral lines; 7. a seal ring block; 8. a second valve body; 9. a fixing assembly; 901. a connecting rod; 902. a rotating ring; 903. a triangle; 904. a slide bar; 905. an arc-shaped clamping block; 10. an oil inlet pipe; 11. an oil outlet pipe; 12. fixing the sleeve; 13. a sliding protrusion; 14. a second thread groove; 15. a fixing protrusion; 16. a concave fixed block; 17. a hand-held lever; 18. a fixing frame; 19. a threaded rod; 20. a first handle; 21. a rotating block; 22. a rotating lever; 23. a screw block; 24. a second handle; 25. a screw rod; 26. a sealing column; 27. a flashboard; 28. a baffle plate; 29. an air valve; 30. and a third handle.

Detailed Description

The following detailed description of embodiments of the present application will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present application can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

As shown in fig. 1-6, the petroleum transmission pipeline flat valve assembly provided by the embodiment comprises a first valve body 1, side walls on two sides of the first valve body 1 are respectively communicated with a first oil guide pipe 2, side walls on one side of the two first oil guide pipes 2 are respectively provided with a first thread groove 3 and a straight line groove 4, one end of the two first oil guide pipes 2 far away from the first valve body 1 is respectively and movably connected with a second oil guide pipe 5, the outer side wall of one end of the second oil guide pipe 5 far away from the first oil guide pipe 2 is provided with a spiral thread 6, the joint of the first oil guide pipe 2 and the second oil guide pipe 5 is respectively provided with a sealing ring block 7, one ends of the two second oil guide pipes 5 far away from the two first oil guide pipes 2 are respectively communicated with a second valve body 8, one side walls of the two second valve bodies 8 far away from the two second oil guide pipes 5 are respectively communicated with an oil inlet pipe 10 and an oil outlet pipe 11, the outer surfaces of the two first oil guide pipes 2 are respectively sleeved with a fixed sleeve 12, the inner side walls of the fixed sleeve 12 are respectively and slidably connected with the outer side walls of the first oil guide pipe 2 and the second oil guide pipe 5, the outer side walls of the two fixed sleeve 12 are respectively provided with a plurality of concave fixed blocks 16, the concave fixed blocks 16 are equidistantly arranged around the center axis of the fixed sleeve 12, the concave fixed blocks 16 are respectively hinged with a handheld rod 17, the inner side walls of one ends of the fixed sleeve 12, which are close to the first oil guide pipe 2, are respectively and fixedly connected with sliding bulges 13, the inner side walls of one ends of the fixed sleeve 12, which are close to the second oil guide pipe 5, are provided with second thread grooves 14, the second thread grooves 14 are screwed with the spiral threads 6, the outer side walls of one ends of the two fixed sleeve 12, which are close to the second oil guide pipes 5, are respectively provided with fixed bulges 15, the sliding bulges 13 are respectively and slidably connected with the linear grooves 4 and the first thread grooves 3, and the linear grooves 4 are communicated, the screw thread groove 3 and the screw thread groove 14 are consistent in screw pitch, the side wall of one side, close to the valve body 1, of the valve body 8 is fixedly connected with a fixing component 9 used for fixing a fixing sleeve 12 respectively, the valve body 1 is used for operating the valve body 1 during daily use by combining the valve body 8 and the valve body 1, the valve body 8 is idle, so that the use frequency of the valve body 8 is reduced, the service life of the valve body 8 is prolonged, the failure rate of the valve body 1 is higher than that of the valve body 8 during frequent operation of the valve body 1, the valve body 8 is closed when the valve body 1 is damaged, the transmission of petroleum is blocked, and then the valve body 1 is disassembled and installed by rotating the fixing sleeve 12 and the fixing component 9;

1-6, the fixing component 9 comprises a plurality of connecting rods 901, a rotating ring 902, a plurality of triangular plates 903, a plurality of sliding rods 904 and a plurality of arc clamping blocks 905, wherein one end of each connecting rod 901 is fixedly connected to one side wall of the second valve body 8 close to the first valve body 1, the plurality of connecting rods 901 are equidistantly arranged around the central axis of the second oil guide pipe 5, the other ends of the plurality of connecting rods 901 are respectively and slidably connected with the plurality of sliding rods 904, the outer side walls of the plurality of arc clamping blocks 905 are respectively and fixedly connected to one ends of the plurality of sliding rods 904, the other ends of the plurality of triangular plates 903 are respectively and slidably connected with the other ends of the plurality of sliding rods 904, the side walls of one sides of the plurality of triangular plates 903 are fixedly connected to the inner side walls of the rotating ring 902, the plurality of sliding rods 904, the plurality of arc clamping blocks 905 and the plurality of triangular plates 903 are equidistantly arranged around the central axis of the second oil guide pipe 5, the arc clamping blocks 905 are clamped with each other, the cylindrical inner side wall formed when the arc clamping blocks 905 are clamped with each other is contacted with the outer side wall of the second oil guide pipe 5 and the outer side wall of one end of the fixed sleeve 12, the fixed frames 18 are fixedly connected with one side wall of the second valve body 8 respectively, the threaded rods 19 are rotationally connected with the fixed frames 18, one ends of the threaded rods 19 penetrate through the fixed frames 18 to extend to one side of the fixed frames 18 and are fixedly connected with the first handle 20, the outer side walls of the two rotating rings 902 are respectively provided with a rotating block 21, one side wall of the two rotating blocks 21, which is close to the second valve body 8, is rotationally connected with a rotating rod 22, one end of the rotating rod 22, which is far away from the rotating block 21, is rotationally connected with a threaded block 23 and is vertically and slidably connected with the threaded block 23, so that the rotating rings 902 can be driven to rotate anticlockwise when the threaded blocks 23 move forwards and backwards, the threaded block 23 is in threaded connection with the threaded rod 19, the sliding track of the sliding rod 904 in the triangular plate 903 is that when the rotating ring 902 rotates towards the first handle 20, the plurality of sliding rods 904 respectively drive the plurality of arc-shaped clamping blocks 905 to move towards the central axis direction of the rotating ring 902, and when the rotating ring 902 moves reversely, the plurality of arc-shaped clamping blocks 905 are driven to move towards the central axis direction away from the rotating ring 902;

further, as shown in fig. 1-6, the first valve body 1 is rotatably connected with the second handle 24, the second handle 24 is in threaded connection with the lead screw 25, the lead screw 25 is positioned in the first valve body 1, one end of the lead screw 25 is fixedly connected with the sealing post 26, one end of the sealing post 26, which is far away from the lead screw 25, is fixedly connected with the flashboard 27, the upper end surface of the flashboard 27 is fixedly connected with the baffle plate 28, the side wall of one side of the first valve body 1 is provided with the air valve 29, the air valve 29 is positioned in the space above the baffle plate 28 in the first valve body 1, the two second valve bodies 8 are respectively provided with the third handle 30, the third handle 30 and the first handle 20 are respectively positioned at two sides of the second valve body 8, when the second handle 24 is rotated, the lead screw 25 is driven to move upwards, then the flashboard 27 is driven to move upwards, when the lead screw 25 moves upwards, because the sealing post 26 is fixedly connected with the sealing post 26, the sealing post 26 is slidingly connected in a pipeline where the lead screw 25 is positioned, the sealing post 26 guarantees tightness between a cavity where the flashboard 27 is positioned and the cavity where the lead screw 25 is rotatably connected with the air valve 28, and the space where the air guide plate 28 moves further, and the air guide plate 28 moves upwards through the upper and lower air guide plate 28 when the space where the upper and lower air guide plate 28 is driven by the air guide plate 28;

as shown in fig. 1 to 6, the application method of the flat valve assembly of the petroleum transmission pipeline provided in this embodiment includes the following steps:

s1: firstly, when the first valve body 1 is to be disassembled, the two third handles 30 are respectively rotated to enable the two second valve bodies 8 to respectively close the oil inlet pipe 10 and the oil outlet pipe 11, so that the transmission of oil in the first oil guide pipe 2 and the second oil guide pipe 5 is blocked;

s2: then, the two first handles 20 are respectively rotated to enable the rotating ring 902 to rotate, then the plurality of sliding rods 904 are respectively driven by the plurality of triangular plates 903 to slide on the plurality of connecting rods 901, and then the plurality of arc-shaped clamping blocks 905 are driven to move towards the direction away from the central axis of the rotating ring 902, so that the inner side walls of the plurality of arc-shaped clamping blocks 905 are away from the outer side wall of one end of the fixed sleeve 12 and the outer side wall of the second oil guide pipe 5, and the inner side walls of the plurality of arc-shaped clamping blocks 905 are not contacted any more;

s3: then, a plurality of handheld rods 17 on the outer side walls of the two fixed sleeves 12 are respectively rotated to enable the handheld rods to be vertical to the central axis of the fixed sleeve 12, the fixed sleeve 12 is driven to rotate by manually rotating the handheld rods 17, the second thread groove 14 and the spiral thread 6 are not screwed when the fixed sleeve 12 rotates, and at the same time when screwing is finished, the sliding protrusion 13 is located at the position where the linear groove 4 is communicated with the first thread groove 3, and the fixed sleeve 12 is pulled to the direction of the first valve body 1 in a linear mode, so that the second thread groove 14 is completely separated from the second oil guide pipe 5.

S4: finally, when the two fixed sleeves 12 are fully retracted, the valve body 1 No. 1 can be removed in the up-down direction for subsequent maintenance and replacement.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in a commodity or system comprising the element.

While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the application are intended to be within the scope of the appended claims.

Claims (10)

1. The utility model provides a petroleum transmission pipeline flat valve subassembly, includes valve body (1), its characterized in that: the side walls of the two sides of the valve body (1) are respectively communicated with an oil guide pipe (2), the outer side walls of the two oil guide pipes (2) are respectively provided with a thread groove (3) and a thread groove (4), the two oil guide pipes (2) are far away from one side wall of the valve body (1) and are respectively and movably connected with an oil inlet pipe (10) and an oil outlet pipe (11), the outer surface of the two oil guide pipes (5) is far away from one end outer side wall of the oil guide pipe (2) and is provided with a spiral thread (6), the joint of the first oil guide pipe (2) and the second oil guide pipe (5) is respectively provided with a sealing ring block (7), the two ends of the two oil guide pipes (5) far away from the two oil guide pipes (2) are respectively communicated with the second valve body (8), the side walls of the two oil guide pipes (5) are respectively communicated with the oil inlet pipe (10) and the oil outlet pipe (11), the two outer surfaces of the two oil guide pipes (2) are respectively sleeved with a fixed sleeve (12), the fixed sleeve (12) is connected with the outer side wall (12) and the inner side wall (13) of the fixed sleeve (12) in a sliding way respectively, the fixed sleeve (12) is close to a second thread groove (14) is formed in the inner side wall of one end of the second oil guide pipe (5), the second thread groove (14) is screwed with the spiral threads (6), and two fixed assemblies (9) used for fixing the fixed sleeve (12) are fixedly connected to the side wall of one side of the second valve body (8) close to the first valve body (1) respectively.

2. A petroleum transfer line flat valve assembly according to claim 1, wherein: two fixed sleeve (12) are close to two the one end lateral wall of No. two oil pipes (5) is equipped with fixed arch (15) respectively, sliding protrusion (13) respectively with straight line groove (4) and thread groove (3) are sliding connection mutually, just thread groove (3) with be linked together between straight line groove (4), thread groove (3) with No. two thread groove (14) pitch unanimity.

3. A petroleum transfer line flat valve assembly according to claim 1, wherein: the fixed subassembly (9) includes a plurality of connecting rod (901), swivel ring (902), a plurality of set-square (903), a plurality of slide bar (904) and a plurality of arc grip block (905), a plurality of connecting rod (901) one end fixed connection is in No. two valve body (8) are close to on No. one valve body (1) one side lateral wall, and a plurality of connecting rod (901) are around No. two lead oil pipe (5) central axis equidistance setting, a plurality of connecting rod (901) other end respectively with a plurality of slide bar (904) sliding connection, a plurality of arc grip block (905) lateral wall respectively fixed connection be in a plurality of slide bar (904) one end, a plurality of set-square (903) respectively with a plurality of slide bar (904) other end sliding connection, a plurality of set-square (903) one side lateral wall all fixed connection be in swivel ring (902) inside wall.

4. A petroleum transfer line flat valve assembly according to claim 3, wherein: the sliding rods (904), the arc-shaped clamping blocks (905) and the triangular plates (903) are all arranged around the center axis of the second oil guide pipe (5) at equal intervals, the arc-shaped clamping blocks (905) are clamped with each other, and the cylindrical inner side wall formed when the arc-shaped clamping blocks (905) are clamped with each other is contacted with the outer side wall of the second oil guide pipe (5) and the outer side wall of one end of the fixed sleeve (12).

5. A petroleum transfer line flat valve assembly according to claim 1, wherein: two the fixed sleeve (12) lateral wall all is equipped with a plurality of concave fixed block (16), and a plurality of concave fixed block (16) are around fixed sleeve (12) central axis equidistance sets up, and a plurality of all articulate on concave fixed block (16) handheld pole (17).

6. A petroleum transfer line flat valve assembly according to claim 1, wherein: two No. two valve body (8) one side lateral walls are fixedly connected with mount (18) respectively, rotate on mount (18) and be connected with threaded rod (19), threaded rod (19) one end runs through mount (18) extends to mount (18) one side and fixedly connected with handle (20).

7. A petroleum transfer line flat valve assembly according to claim 3, wherein: two all be equipped with on rotor ring (902) lateral wall rotating block (21), two rotating block (21) are close to one side lateral wall of No. two valve body (8) all rotates and is connected with dwang (22), dwang (22) are kept away from one end rotation of rotating block (21) is connected with screw thread piece (23), and with sliding connection about screw thread piece (23), screw thread piece (23) with threaded rod (19) threaded connection.

8. A petroleum transfer line flat valve assembly according to claim 1, wherein: the valve is characterized in that a second handle (24) is rotationally connected to the first valve body (1), a screw rod (25) is connected to the second handle (24) in a threaded mode, the screw rod (25) is located inside the first valve body (1), a sealing column (26) is fixedly connected to one end of the screw rod (25), and a flashboard (27) is fixedly connected to one end of the sealing column (26) away from the screw rod (25).

9. A petroleum transfer line flat valve assembly according to claim 8, wherein: the valve plate is characterized in that a baffle plate (28) is fixedly connected to the upper end face of the valve plate (27), an air valve (29) is arranged on one side wall of the valve body (1), the air valve (29) is arranged in the valve body (1) and located at the space above the baffle plate (28), three handles (30) are respectively arranged on the valve body (8), and the handles (30) and the handles (20) are respectively located at two sides of the valve body (8).

10. A method of using a petroleum transfer line flat valve assembly, comprising: the method comprises the following steps:

s1: firstly, when the first valve body (1) is required to be disassembled, the two third handles (30) are respectively rotated to enable the two second valve bodies (8) to respectively close the oil inlet pipe (10) and the oil outlet pipe (11), so that the transmission of petroleum in the first oil guide pipe (2) and the second oil guide pipe (5) is blocked;

s2: then, the two first handles (20) are respectively rotated to enable the rotating ring (902) to rotate, then the plurality of sliding rods (904) are driven by the plurality of triangular plates (903) to respectively slide on the plurality of connecting rods (901), and then the plurality of arc-shaped clamping blocks (905) are driven to move towards the direction away from the central axis of the rotating ring (902), so that the inner side walls of the plurality of arc-shaped clamping blocks (905) are far away from the outer side wall of one end of the fixed sleeve (12) and the outer side wall of the second oil guide pipe (5) and are not contacted;

s3: then, respectively rotating a plurality of handheld rods (17) on the outer side walls of the two fixed sleeves (12) to enable the handheld rods to be vertical to the central axis of the fixed sleeves (12), manually rotating the handheld rods (17) to drive the fixed sleeves (12) to rotate, enabling the second thread groove (14) and the spiral thread (6) not to rotate when the fixed sleeves (12) rotate, and enabling the sliding protrusion (13) to be positioned at the position where the straight thread groove (4) is communicated with the first thread groove (3) when the rotation is finished, and linearly pulling the fixed sleeves (12) to the direction of the first valve body (1) to enable the fixed sleeves to be completely separated from the second oil guide pipe (5);

s4: finally, when the two fixed sleeves (12) are completely retracted, the valve body (1) I can be taken down in the up-down direction so as to facilitate subsequent maintenance and replacement.