Integral clamp valve

Abstract

The present invention provides an integral clamping plate valve, which adopts an integrally processed valve body, valve cover and bypass valve. The integral clamping plate valve provided by the present invention overcomes the defects of the original multi-piece clamping plate valve, such as complex structure, inconvenient maintenance and disassembly, and the existence of welding stress, and has the advantages of reliable sealing, simple structure and convenient disassembly and assembly.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas pipelines, and in particular to an integral clamping plate valve. Background Art

[0002] Clamp valves are commonly used equipment for pipeline maintenance and emergency repairs, but traditional clamp valves (two-piece, three-piece, welded) have some inevitable disadvantages, such as a large number of bolts, inconvenient disassembly, and a long time consumption; welding stress of welded clamp valves cannot be eliminated, and the welding workload is also large.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The invention provides an integral clamping plate valve to solve the technical problems existing in the prior art.

[0005] In order to solve the above problems, the present invention provides an integral clamping plate valve, including a valve body, a valve cover, a valve core, a floating sealing ring and a bypass valve;

[0006] The valve body comprises: a first end and a second end, and is respectively connected to the valve cover and the bypass valve through the first end and the second end; a first inner cavity, one end of which is connected to the first end, and the other end of which is adjacent to the second end and has a limiting component; a second inner cavity, which penetrates the valve body along the width direction of the valve body;

[0007] The valve cover has a third inner cavity penetrating the valve cover, one end of which is connected to the first inner cavity;

[0008] The number of the floating sealing rings is two, and they are arranged around the second inner cavity;

[0009] The valve core is located inside the first inner cavity and the third inner cavity, and can move along the inner surfaces of the first inner cavity and the third inner cavity to open / close the second inner cavity;

[0010] The valve body and the valve cover are respectively integrally formed structures.

[0011] Further, the bypass valve comprises a body; a fourth inner cavity provided through the body, and movable sealing devices are respectively provided at both ends of the fourth inner cavity; the body further comprises a fifth inner cavity and a sixth inner cavity respectively arranged perpendicularly to the fourth inner cavity, the fifth inner cavity passes through the body and intersects with the fourth inner cavity, and a wire plug is provided at one end of the fifth inner cavity; the sixth inner cavity is respectively located on both sides of the fifth inner cavity, and one end thereof is adjacent to the movable sealing device, and the movable sealing device can move along the inner wall of the fourth inner cavity to open / close one end of the sixth inner cavity;

[0012] The second end of the valve body has a first channel hole and a second channel hole, one end of the first channel hole is connected to the first inner cavity, and the other end is connected to the fifth inner cavity; the second channel hole is located on both sides of the first channel hole, one end of which is connected to the other end of the sixth inner cavity, and the other end of the second channel hole is connected to the second inner cavity.

[0013] Furthermore, the movable sealing device includes an elastic retaining ring, a sealing cone rod and a sealing cone which are arranged in sequence from the end of the fourth inner cavity, the sealing cone head is a frustum, and the fourth inner cavity has a shape adapted to the sealing cone head.

[0014] Furthermore, the valve core includes a core body and a lead screw which are connected to each other, the other end of the core body can contact the limiting component, and the other end of the lead screw has an end cover. By rotating the end cover, the lead screw can drive the core body to move along the inner surfaces of the first inner cavity and the third inner cavity to open / close the second inner cavity.

[0015] Furthermore, the valve core also has a crank fixedly connected to the end cover.

[0016] Furthermore, the floating sealing ring comprises a ring body, one axial side of the ring body comprises a spring extending into the ring body, and a gland sealing the spring in the ring body; the other axial side of the ring body comprises a sixth sealing ring.

[0017] Further or preferably, the limiting component is a limiting plate.

[0018] Further or preferably, the valve body and the valve cover are connected to each other by bolts.

[0019] Further or preferably, the cross-section of the first end portion of the valve body is square.

[0020] The present invention provides an integral clamping plate valve, which adopts an integrally processed valve body, valve cover and bypass valve. The integral clamping plate valve provided by the present invention overcomes the defects of the original multi-piece clamping plate valve, such as complex structure, inconvenient maintenance and disassembly, and the existence of welding stress, and has the advantages of reliable sealing, simple structure and convenient disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the integral clamping plate valve provided by the present invention;

[0022] Figure 2 A schematic diagram of the valve body structure of the integral clamping valve provided by the present invention;

[0023] Figure 3 A schematic diagram of the valve cover structure of the integral clamping valve provided by the present invention;

[0024] Figure 4A schematic diagram of the bypass valve structure of the integral clamping valve provided by the present invention;

[0025] Figure 5 A schematic diagram of the valve core structure of the integral clamping valve provided by the present invention;

[0026] Figure 6 A schematic diagram of the floating sealing ring structure of the integral clamping valve provided by the present invention.

[0027] In the figure:

[0028] 1. Valve body 11. First end 12. Second end 13. First inner cavity 14. Second inner cavity 15. Limiting component 16. First channel hole 17. Second channel hole;

[0029] 2. Valve cover 21. Third inner cavity;

[0030] 3. Floating sealing ring 31. Ring body 32. Spring 33. Pressure cover 34. First ring sealing ring 35. Second ring sealing ring;

[0031] 4. Bypass valve 41. Body 42. Fourth inner cavity 43. Fifth inner cavity 44. Sixth inner cavity 45. Thread plug 46. Circlip 47. Sealing cone rod 48. Sealing cone;

[0032] 5. Valve core 51. Core body 52. ​​Lead screw 53. Crank handle 54. End cover 55. Lead screw nut 56. Limit screw;

[0033] 6. Connect the bolts 7. Tighten the hexagonal bolts. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Please refer to Figures 1 to 6 The present invention provides an integrated clamping valve, comprising a valve body 1, a valve cover 2, a valve core 5, a floating sealing ring 3 and a bypass valve 4;

[0036] like Figure 2As shown, the valve body 1 includes: a first end 11 and a second end 12, and is connected to the valve cover 2 and the bypass valve 4 respectively through the first end 11 and the second end 12; a first inner cavity 13, which is arranged to extend along the length direction of the valve body 1, one end of the first inner cavity 13 is connected to the first end 11, and the other end is adjacent to the second end 12 and has a limiting component 15 at its end, which is used to limit the movement of the valve core 5. In this embodiment, the limiting component 15 is a limiting plate; a second inner cavity 14, which is used to connect to an external pipeline, and the second inner cavity 14 passes through the valve body 1 along the width direction of the valve body 1; the valve body is also provided with connecting bolts 6 around the width direction;

[0037] like Figure 3 As shown, the valve cover 2 has a third inner cavity 21 penetrating along its length direction, one end of which is connected to the first inner cavity 13;

[0038] There are two floating sealing rings 3, which are arranged around the second inner cavity 14 and are respectively located on both sides of the first inner cavity 13;

[0039] The valve core 5 is located inside the first inner cavity 13 and the third inner cavity 21 and can move along the inner surfaces of the first inner cavity 13 and the third inner cavity 21 to open / close the second inner cavity 14;

[0040] In the embodiment provided by the present invention, the valve body 1 and the valve cover 2 are respectively integrally formed structures, for example, they can be integrally processed from forgings.

[0041] In the embodiments provided by the present invention, Figure 4 As shown, the bypass valve 4 includes a body 41; a fourth inner cavity 42 is arranged along the length direction of the body 41 and penetrates the body 41, and both ends of the fourth inner cavity 42 are respectively provided with movable sealing devices; the body 41 also has a fifth inner cavity 43 and a sixth inner cavity 44 which are respectively arranged perpendicular to the fourth inner cavity 42, the fifth inner cavity 43 penetrates the body 41 and intersects with the fourth inner cavity 42 at its center, and one end of the fifth inner cavity 43 is provided with a wire plug 45; there are two sixth inner cavities 44, which are respectively located on both sides of the fifth inner cavity 43, and one end of which is adjacent to the part of the fourth inner cavity 42 where the movable sealing device is located, and the movable sealing device can move along the inner wall of the fourth inner cavity 42 to open / close one end of the sixth inner cavity 44;

[0042] Corresponding to the bypass valve 4, the second end 12 of the valve body 1 has a first channel hole 16 and a second channel hole 17, one end of the first channel hole 16 is connected to the first inner cavity 13, and the other end is connected to the fifth inner cavity 43; there are also two second channel holes 17, which are respectively located on both sides of the first channel hole 16, one end of which is connected to the other end of the sixth inner cavity 44, and the other end is connected to the second inner cavity 14;

[0043] The movable sealing device includes an elastic ring 46, a sealing cone rod 47 and a sealing cone 48, which are arranged in sequence from one end of the fourth inner cavity 42 toward the other end. The head of the sealing cone 48 is a frustum. The fourth inner cavity 42 has a shape adapted to the head of the sealing cone 48. For example, as shown in the figure, the diameters of the two side portions of the fourth inner cavity 42 are greater than the diameter of the middle portion. The portion that covers the head of the sealing cone 48 has a changing portion whose diameter gradually decreases and is adapted to the head of the sealing cone 48. This setting is used to limit the movement of the sealing cone 48.

[0044] In the embodiments provided by the present invention, Figure 5 As shown, the valve core 5 includes a core body 51 and a lead screw 52 connected to each other. The other end of the core body 51 can contact the limiting component 15. The other end of the lead screw 52 has an end cover 54. By rotating the end cover 54, the lead screw 52 can drive the core body 51 to move along the inner surface of the first inner cavity 13 and the third inner cavity 21 to open / close the second inner cavity 14. The valve core 5 also has a crank 53 fixedly connected to the end cover 54. By rotating the crank 53, the lead screw 52 is driven through the end cover 54 to move the core body 51.

[0045] The core body 51 and the lead screw 52 are connected to each other via a lead screw nut 55 . The lead screw nut 55 also has a limit screw 56 for adjusting the relative position between the core body 51 and the lead screw 52 .

[0046] In the embodiments provided by the present invention, Figure 6 As shown, the floating sealing ring 3 includes a ring body 31, one axial side of the ring body 31 has a spring 32 extending into the ring body 31, and a pressure cover 33 that seals the spring 32 in the ring body 31; the other axial side of the ring body 31 has a first ring sealing ring 34; and the radial outer surface of the ring body 31 also has a second ring sealing ring 35.

[0047] In the embodiment provided by the present invention, the first end portion 11 of the valve body 1 is square, and the end portion of the valve cover 2 connected thereto also has a matching shape; the valve body 1 and the valve cover 2 are connected to each other by bolts, and bolt holes are respectively provided on the end surface of the first end portion 11 and the valve cover 2, and the hexagonal bolts 7 are tightened to penetrate the valve cover 2 to fix it to the valve body 1;

[0048] In the embodiment provided by the present invention, the second end 12 of the valve body 1 is an arc surface structure extending along the circumferential direction of the second inner cavity 14, and the end surface of the second end 12 has a plane for matching with the bypass valve 4, which can be processed by milling technology.

[0049] The process of assembling the integral clamping valve provided by the present invention is as follows:

[0050] Install two floating sealing rings 3 into the valve body 1 along one side of the second inner cavity 14 respectively; insert the limiting component 15 into the bottom end of the first inner cavity 13; fix the screw 52 to the core body 51, install the end cover 54 at the other end of the screw 52, ​​fix the end cover 54 on the end face of the other end of the valve cover 2 (away from the first end 11 of the valve body 1), so that the screw 52 passes through the valve cover 2; fix the valve cover 2 to the valve body 1, so that the valve core 5 passes through the first inner cavity 13 and the third inner cavity 21; install the crank 53, and complete the assembly of the integral clamping valve.

[0051] The working process of the integrated clamping valve provided by the present invention is as follows:

[0052] When the crank 53 is rotated clockwise, the screw 52 drives the screw 52 nut to make a linear motion to the left. The screw 52 nut is fixed on the core body 51, that is, the valve core 5 moves to the left. When it moves to a certain position, all the valves are closed; when the crank 53 is rotated counterclockwise, the screw 52 drives the screw 52 nut to make a linear motion to the right. The core body 51 moves to the right. When it moves to a certain position, all the valves are opened.

[0053] The invention concept is described in detail using specific examples herein, and the description of the above embodiments is only used to help understand the core idea of ​​the invention. It should be pointed out that any obvious modification, equivalent substitution or other improvement made by a person of ordinary skill in the art without departing from the invention concept should be included in the protection scope of the present invention.

Claims

1. Integral clamp valve, characterized in that: It includes valve body, valve cover, valve core, floating sealing ring and bypass valve; The valve body comprises: a first end and a second end, and is respectively connected to the valve cover and the bypass valve through the first end and the second end; a first inner cavity, one end of which is connected to the first end, and the other end of which is adjacent to the second end and has a limiting component; a second inner cavity, which penetrates the valve body along the width direction of the valve body; The valve cover has a third inner cavity penetrating the valve cover, one end of which is connected to the first inner cavity; The number of the floating sealing rings is two, and they are arranged around the second inner cavity; The valve core is located inside the first inner cavity and the third inner cavity, and can move along the inner surfaces of the first inner cavity and the third inner cavity to open / close the second inner cavity; The valve body and valve cover are integrally formed structures, and the bypass valve is an integrally processed structure; The bypass valve comprises a body; a fourth inner cavity is arranged through the body, and both ends of the fourth inner cavity are respectively provided with movable sealing devices; the body also comprises a fifth inner cavity and a sixth inner cavity which are respectively arranged perpendicular to the fourth inner cavity, the fifth inner cavity passes through the body and intersects with the fourth inner cavity, and one end of the fifth inner cavity is provided with a wire plug; the sixth inner cavity is respectively located on both sides of the fifth inner cavity, and one end thereof is adjacent to the movable sealing device, and the movable sealing device can move along the inner wall of the fourth inner cavity to open / close one end of the sixth inner cavity; The second end of the valve body has a first channel hole and a second channel hole, one end of the first channel hole is connected to the first inner cavity, and the other end is connected to the fifth inner cavity; the second channel hole is located on both sides of the first channel hole, one end of which is connected to the other end of the sixth inner cavity, and the other end of the second channel hole is connected to the second inner cavity; The valve core includes a core body and a lead screw which are connected to each other. The other end of the core body can contact the limiting component. The other end of the lead screw has an end cover. By rotating the end cover, the lead screw can drive the core body to move along the inner surfaces of the first inner cavity and the third inner cavity to open / close the second inner cavity.

2. The integrated clamping plate valve according to claim 1, characterized in that: The movable sealing device comprises an elastic retaining ring, a sealing cone rod and a sealing cone which are arranged in sequence from the end of the fourth inner cavity. The head of the sealing cone is a frustum, and the fourth inner cavity has a shape adapted to the head of the sealing cone.

3. The integrated clamping plate valve according to claim 1, characterized in that: The valve core also has a crank fixedly connected to the end cover.

4. The integrated clamping valve according to claim 1, characterized in that: The floating sealing ring comprises a ring body, one axial side of the ring body is provided with a spring extending into the ring body, and a gland sealing the spring in the ring body; the other axial side of the ring body is provided with a sixth sealing ring.

5. The integrated clamping valve according to any one of claims 1 to 4, characterized in that: The limiting component is a limiting plate.

6. The integrated clamping valve according to any one of claims 1 to 4, characterized in that: The valve body and the valve cover are connected to each other by bolts.

7. The integrated clamping valve according to any one of claims 1 to 4, characterized in that: The cross section of the first end portion of the valve body is square.

Images