Piston flow regulating valve for long-distance pipeline

Abstract

The utility model provides a piston flow regulating valve for a long-distance pipeline, and relates to the technical field of piston flow regulating valves, the piston flow regulating valve comprises a valve body, a central cylinder and a movable plate, the left end of the valve body is provided with an inlet, the right end of the valve body is provided with an outlet, the left part in the valve body is sleeved with an inner filter net bag, and the central cylinder is arranged in the middle of the valve body; a movable plate is movably arranged on the right portion in the valve body, a lead screw is arranged in the center of the center cylinder, the left end of the lead screw is rotationally connected into the left portion of the center cylinder, a movable sleeve is arranged in the center of the movable plate, the movable sleeve is movably connected to a right rod body of the worm gear, and a middle sleeve plate is arranged in the middle of the left side face of the movable plate; and a sleeve cavity is formed in the middle sleeve plate. According to the utility model, the medium can be conveniently filtered while passing, so that the pipeline is prevented from being blocked, the inner filter net bag is convenient to assemble or disassemble, the position of the movable plate can be flexibly adjusted, the switch releasing and the adjustment of the flow of the passing medium are facilitated, the operation is stable and accurate, and the use is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of piston flow regulating valves, in particular to a piston flow regulating valve for long-distance pipelines. Background Art

[0002] Long-distance pipelines refer to large-scale pipeline systems used to transport fluid media such as oil and natural gas. They usually span hundreds or even thousands of kilometers and transport energy resources from production sites or import ports to consumption centers. Regulating valves have been widely used in many long-distance pipeline projects because of their high adjustment accuracy, low cavitation, noise and vibration, good energy dissipation effect, and easy automatic control.

[0003] In the specification of a piston-type flow regulating valve in the prior art (publication number CN209484021U), it is mentioned that "the water outlet flange is provided on one side of the valve body, the water inlet flange is provided on the other side of the valve body, the valve core is provided inside the valve body, blocking rings are provided on the upper and lower sides of the valve core, a water inlet is provided on one side of the valve core, a water outlet is provided on the other side of the valve core, an adjusting shaft is provided inside the valve core, a sealing ring is provided on the outer side of the adjusting shaft, a connecting block is provided in the middle of the adjusting shaft, a piston rod is provided on one side of the connecting block, a piston plug is provided on one end of the piston rod, and an arc-shaped diverter plate is provided on one side of the piston plug". However, the prior art cannot filter the medium when conveying it, and blockage may occur over a long period of time. Moreover, the arc-shaped diverter plate is inconvenient for adjusting the flow of the medium, and is not convenient and practical. Utility Model Content

[0004] In order to overcome the defects of the prior art, a piston flow regulating valve for long-distance pipelines is provided to solve the problems that the prior art cannot filter the medium when transporting it, blockage may occur over a long period of time, and the arc-shaped diverter plate is inconvenient to adjust the flow of the medium, which is not convenient and practical.

[0005] In order to achieve the above-mentioned purpose, a piston flow regulating valve for long-distance pipelines is provided, comprising a valve body, a center tube and a movable plate, wherein the left end of the valve body is provided with an inlet, and the right end of the valve body is provided with an outlet, an inner filter net bag is sleeved on the left inner part of the valve body, a center tube is installed in the middle part of the valve body, and a movable plate is movably provided on the right inner part of the valve body, a screw rod is provided at the center of the center tube, and the left end of the screw rod is rotatably connected to the left part of the center tube.

[0006] Furthermore, two groups of middle partitions are arranged in the middle of the inner side wall of the valve body, and four groups of first openings are opened on the middle partitions, and a front sleeve plate and a rear sleeve plate are arranged in the middle of the outer ring surface of the center tube.

[0007] Furthermore, the front cover plate is located at the left side surface of the left middle partition plate, and the rear cover plate is located at the right side surface of the right middle partition plate, and four groups of second openings are opened on the rear cover plate.

[0008] Furthermore, a sleeve edge is provided on the left side of the inner filter net bag, and a front sleeve hole is provided on the right side of the inner filter net bag, the front sleeve hole is sleeved outside the left part of the central tube, and the inner filter net bag is a disassembly structure.

[0009] Furthermore, a worm wheel is installed in the middle of the screw rod, a worm is arranged at the lower part of the worm wheel, and a rotating shaft is installed in the center of the worm, and the other end of the rotating shaft passes through the outside of the valve body.

[0010] Furthermore, a movable sleeve is provided in the center of the movable plate, which is movably connected to the right rod body of the worm gear, and a middle sleeve plate is provided in the middle of the left side of the movable plate, a sleeve cavity is opened in the middle sleeve plate, and the sleeve cavity is sleeved outside the right end of the center tube.

[0011] Furthermore, four groups of fixing rods are fixed at the edge of the left side of the movable plate, a pressure plate is fixed to the left end of the fixing rod, and a piston is arranged at the front end of the pressure plate, and the piston is made of silicone rubber.

[0012] The beneficial effects of the utility model are:

[0013] 1. The center tube of the utility model is respectively arranged at one side of two sets of middle partitions in the middle of the inner wall of the valve body through the front sleeve plate and the rear sleeve plate in the middle of the outer ring surface, so as to stabilize the center tube of the column, so that the medium in the valve body can flow through the gap between the outer side of the center tube and the inner wall of the valve body when the medium in the valve body can pass through, which is helpful to buffer the medium impacted by direct current and facilitate flexible flow adjustment.

[0014] 2. The inner filter net bag and the valve body in the utility model are convenient to assemble or disassemble, so that the inner filter net bag can be used to filter the medium passing through the valve body, so as to avoid clogging the pipeline for long-term transportation and make the transportation more stable and smooth.

[0015] 3. In the utility model, rotating the rotating shaft clockwise will drive the worm gear transmission between the worm and the worm wheel, so that the movable plate moves to the left side of the screw rod, while rotating the rotating shaft counterclockwise will drive the movable plate to move to the right side of the screw rod, which is convenient and flexible to adjust the position of the movable plate and makes the operation easier and faster.

[0016] 4. In the utility model, the movable plate moves to the left until the middle sleeve plate at the front end of the fixed rod is pressed outside the right port of the second opening, and the piston is blocked in the second opening, so as to achieve the purpose of cutting off the passage of the medium. When the movable plate gradually moves to the right, it will drive the piston to gradually leave the second opening, so as to achieve the purpose of gradually increasing the flow rate of the medium, and the flow adjustment is convenient and easy; the middle sleeve plate is sleeved outside the right end of the center tube to achieve the effect of straight positioning, and the positioning is more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a piston in a valve body blocked in a second port in an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the piston in the valve body leaving the second opening in an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of an inner filter net bag according to an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a movable plate according to an embodiment of the utility model.

[0021] In the figure: 1. valve body; 10. inlet; 11. outlet; 12. middle partition; 13. first port; 2. inner filter net bag; 20. front sleeve hole; 21. sleeve edge; 3. center tube; 30. screw; 31. worm gear; 32. worm; 33. rotating shaft; 34. second port; 35. front sleeve plate; 36. rear sleeve plate; 4. movable plate; 40. movable sleeve; 41. fixed rod; 42. middle sleeve plate; 43. sleeve cavity; 44. pressure plate; 45. piston. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0023] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the piston in the valve body of the utility model being blocked in the second port, Figure 2 This is a schematic diagram of the piston in the valve body leaving the second port in the embodiment of the utility model. Figure 3 Schematic diagram of the inner filter net bag of the utility model embodiment and Figure 4 It is a schematic diagram of a movable plate according to an embodiment of the utility model.

[0025] Reference Figures 1 to 4As shown, the utility model provides a piston flow regulating valve for a long-distance pipeline, comprising a valve body 1, a center tube 3 and a movable plate 4, an inlet 10 is arranged at the left end of the valve body 1, and an outlet 11 is arranged at the right end of the valve body 1, an inner filter net bag 2 is sleeved on the left part of the valve body 1, and a center tube 3 is installed in the middle part of the valve body 1, and a movable plate 4 is movably arranged on the right part of the valve body 1, a screw rod 30 is arranged at the center of the center tube 3, and the left end of the screw rod 30 is rotatably connected to the left part of the center tube 3.

[0026] In this embodiment, two groups of middle partitions 12 are arranged in the middle of the inner wall of the valve body 1, and four groups of first openings 13 are opened on the middle partition 12, and a front sleeve 35 and a rear sleeve 36 are arranged in the middle of the outer ring surface of the center tube 3; the front sleeve 35 is located on the left side of the left middle partition 12, and the rear sleeve 36 is located on the right side of the right middle partition 12, and four groups of second openings 34 are opened on the rear sleeve 36.

[0027] As a preferred embodiment, the center tube 3 of the utility model is respectively arranged on one side of two groups of middle partitions 12 in the middle of the inner wall of the valve body 1 through the front sleeve 35 and the rear sleeve 36 in the middle of the outer ring surface, so as to stabilize the center tube 3 of the column, so that the medium in the valve body 1 can flow through the gap between the outer side surface of the center tube 3 and the inner wall of the valve body 1 when the medium in the valve body 1 is in a passable state, which helps to buffer the medium impacted by direct current and facilitates flexible flow regulation.

[0028] In this embodiment, a sleeve edge 21 is provided on the left side of the inner filter net bag 2, and a front sleeve hole 20 is provided on the right side of the inner filter net bag 2. The front sleeve hole 20 is sleeved outside the left part of the central tube 3, and the inner filter net bag 2 is a disassembly structure.

[0029] As a preferred embodiment, the inner filter net bag 2 and the valve body 1 in the utility model are convenient to assemble or disassemble, so that the inner filter net bag 2 can be used to filter the medium passing through the valve body 1, and long-term transportation can avoid clogging the pipeline, and the transportation is more stable and smooth.

[0030] In this embodiment, a worm wheel 31 is installed in the middle of the screw rod 30, a worm 32 is provided at the lower part of the worm wheel 31, and a rotating shaft 33 is installed in the center of the worm 32, and the other end of the rotating shaft 33 passes through the outside of the valve body 1; a movable sleeve 40 is provided in the center of the movable plate 4, and the movable sleeve 40 is movably connected to the right rod body of the worm wheel 31, and a middle sleeve plate 42 is provided in the middle of the left side of the movable plate 4, and a sleeve cavity 43 is opened in the middle sleeve plate 42, and the sleeve cavity 43 is sleeved outside the right end of the center tube 3.

[0031] As a preferred embodiment, in the utility model, rotating the rotating shaft 33 clockwise will drive the worm gear transmission activity between the worm 32 and the worm wheel 31, so that the movable plate 4 moves to the left side of the screw rod 30, and rotating the rotating shaft 33 counterclockwise will drive the movable plate 4 to move to the right side of the screw rod 30, so that the position of the movable plate 4 can be adjusted flexibly and the operation is easier and faster.

[0032] In this embodiment, four groups of fixing rods 41 are fixed at the left side edge of the movable plate 4, a pressing plate 44 is fixed to the left end of the fixing rod 41, and a piston 45 is arranged at the front end of the pressing plate 44, and the piston 45 is made of silicone rubber.

[0033] As a preferred embodiment, in the utility model, the movable plate 4 moves to the left until the middle sleeve plate 42 at the front end of the fixed rod 41 is pressed outside the right port of the second opening 34, and the piston 45 is blocked in the second opening 34, so as to achieve the purpose of cutting off the passage of the medium. When the movable plate 4 gradually moves to the right, it will drive the piston 45 to gradually leave the second opening 34, so as to achieve the purpose of gradually increasing the flow rate of the medium, and the flow adjustment is convenient and easy; the middle sleeve plate 42 is sleeved outside the right end of the center tube 3 to achieve the effect of straight positioning, and the positioning is more accurate and reliable.

[0034] The utility model can effectively solve the problems that the prior art cannot filter the medium when conveying it, which may cause blockage in the long run, and the arc-shaped diverter plate is inconvenient to adjust the flow size of the medium, which is not convenient and practical. The utility model facilitates filtering while passing the medium to avoid clogging the pipeline, and the internal filter net bag is easy to assemble or disassemble, and the position of the movable plate can be flexibly adjusted to switch the discharge and adjust the flow size of the medium. The operation is stable and accurate, and it is safer to use.

[0035] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A piston flow regulating valve for long-distance pipelines, characterized in that: The invention comprises a valve body (1), a center tube (3) and a movable plate (4); the left end of the valve body (1) is provided with an inlet (10), and the right end of the valve body (1) is provided with an outlet (11); an inner filter net bag (2) is sleeved on the left part of the valve body (1), a center tube (3) is installed in the middle part of the valve body (1), and a movable plate (4) is movably provided on the right part of the valve body (1); a screw rod (30) is provided at the center of the center tube (3), and the left end of the screw rod (30) is rotatably connected to the left part of the center tube (3).

2. A piston flow regulating valve for long-distance pipeline according to claim 1, characterized in that: Two groups of middle partitions (12) are arranged in the middle of the inner wall of the valve body (1), and four groups of first openings (13) are opened on the middle partitions (12), and a front sleeve plate (35) and a rear sleeve plate (36) are arranged in the middle of the outer ring surface of the center tube (3).

3. A piston flow regulating valve for long-distance pipeline according to claim 2, characterized in that: The front cover plate (35) is located on the left side of the left middle partition plate (12), and the rear cover plate (36) is located on the right side of the right middle partition plate (12), and the rear cover plate (36) is provided with four groups of second openings (34).

4. The piston flow regulating valve for long-distance pipeline according to claim 1, characterized in that: The left side of the inner filter net bag (2) is provided with a sleeve edge (21), and the right side of the inner filter net bag (2) is provided with a front sleeve hole (20), the front sleeve hole (20) is sleeved outside the left part of the central tube (3), and the inner filter net bag (2) is a disassembly structure.

5. The piston flow regulating valve for long-distance pipeline according to claim 1, characterized in that: A worm wheel (31) is installed in the middle of the screw rod (30), a worm (32) is arranged at the lower part of the worm wheel (31), and a rotating shaft (33) is installed at the center of the worm (32), and the other end of the rotating shaft (33) passes through the outside of the valve body (1).

6. The piston flow regulating valve for long-distance pipeline according to claim 1, characterized in that: A movable sleeve (40) is arranged at the center of the movable plate (4), and the movable sleeve (40) is movably connected to the right rod body of the worm gear (31). A middle sleeve plate (42) is arranged in the middle of the left side of the movable plate (4), and a sleeve cavity (43) is provided in the middle sleeve plate (42), and the sleeve cavity (43) is sleeved outside the right end of the center tube (3).

7. The piston flow regulating valve for long-distance pipeline according to claim 1, characterized in that: Four groups of fixing rods (41) are fixed at the left side edge of the movable plate (4), a pressing plate (44) is fixed at the left end of the fixing rod (41), and a piston (45) is arranged at the front end of the pressing plate (44), and the piston (45) is made of silicone rubber.

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