Compact high-pressure ball valve

Abstract

The application discloses a compact high-pressure ball valve and relates to the field of ball valves.The compact high-pressure ball valve comprises a valve body, a ball rotating in the valve body, and a through groove penetrating through the valve body and the ball, the inner wall of the valve body is symmetrically provided with containing ring grooves on both sides of the ball, the inner wall of the containing ring groove is circular and is provided with a plurality of supporting springs at equal intervals, the end of each supporting spring is fixedly provided with a same sealing valve seat, the upper and lower ends of the outer side of the ball are both provided with installation ring grooves corresponding to the sealing valve seat, the inner side of the installation ring groove is provided with two groups of top plates, the two groups of top plates are arranged in a circular array, and the outer part of the top plate is slidably connected with a staggered plate.The compact high-pressure ball valve can separate the ball from the sealing valve seat when the ball is stuck, so that the rotation of the ball is no longer limited, and the state of the ball can be adjusted in time according to the requirement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball valves, in particular to a compact high-pressure ball valve. BACKGROUND

[0002] Ball valves are widely used in petroleum and chemical pipelines, with a 90-degree rotation action, and the plug body is a spherical body with a circular hole or channel passing through the axis. In petroleum and chemical industry, crude oil is subjected to high-temperature cracking (cracking), reforming and separation to provide basic raw materials such as ethylene, propylene, butylene, butadiene, benzene, toluene, xylene, naphthalene, etc. During the high-temperature cracking process of crude oil, intermediate products are reformed and cracked again through various pipelines, and the generated basic raw materials are guided to the next process through the pipelines; in the above-mentioned pipelines, ball valves are often used as on-off valves.

[0003] Due to the high temperature of the medium in petroleum and chemical industry, if the ball valve is in a full closed state for a long time, the ball valve core in the ball valve is easy to expand due to high temperature, and then the ball valve core is stuck in the valve cavity, which is not convenient for opening again, so the sealing seat is usually used in cooperation with the spring, and the sealing seat is pushed against the side wall of the ball valve core by the spring to form a seal, thereby avoiding the ball valve core from being stuck in the valve cavity due to thermal expansion caused by high temperature. However, the sealing effect formed by the elastic action of the spring on the sealing seat is poor, and the high-pressure medium is easy to leak between the contact surface of the sealing seat and the ball valve core.

[0004] In the Chinese invention patent with publication number CN114992355B, a high-temperature and high-pressure resistant ball valve and its control mechanism are disclosed, which includes a valve body, a ball core rotating in the valve body, a valve seat fixedly installed in the valve body, and a valve stem fixed with the ball core. An elastic member is arranged between the valve seat and the valve body to elastically act on the valve seat. The ball core includes a ball shell and a pipe body fixedly installed in the ball shell. The present application has a simple structure, and the valve seat is clamped into the sealing groove, which effectively prevents the valve seat from being pushed out of the sealing groove by high-pressure medium, i.e. effectively prevents high-pressure medium from leaking between the contact surface of the valve seat and the ball core, thereby improving the sealing performance of the ball valve under medium pressure. A liquid cavity for cooling is arranged in the ball core to prevent the ball core from expanding and being stuck due to high-temperature medium. At the same time, by controlling the hydraulic pressure in the liquid cavity, the top rod of the ejector mechanism pushes the valve seat out of the sealing groove, thereby releasing the clamping and sealing of the valve seat and the ball core, and the ball core can be rotated to open the ball valve.

[0005] But in the actual application process, the ejector rod can only slide along the inner wall of the guide pipe, and in order to ensure the sealing between the valve seat and the ball core, the elastic member exerts a larger pressure on the valve seat, so that the contact pressure between the ejector rod and the valve seat is larger when the ejector rod ejects the valve seat, and the contact friction resistance between the two is also larger. At this time, although the valve seat is separated from the ball core, the valve seat and the ball core are easy to deform under the long-term high temperature and high pressure environment, and the wear of the sealing surface of the valve seat in the long-term work will make the friction resistance between the contact surface of the ejector rod and the valve seat larger. Therefore, even if the valve seat is separated from the ball core, the relative movement friction resistance between the ejector rod and the valve seat will hinder the rotation of the ball core, so that the ball core still exists the situation of being stuck to cause the inconvenience of adjustment. SUMMARY

[0006] The purpose of the present application is to provide a compact high-pressure ball valve to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a compact high-pressure ball valve, comprising a valve body, a ball body rotating in the valve body, and a through groove penetrating the valve body and the ball body, the inner wall of the valve body is symmetrically provided with a containing ring groove on both sides of the ball body, the inner wall of the containing ring groove is circularly and equidistantly provided with a plurality of supporting springs, and the end of each supporting spring is fixedly provided with a same sealing valve seat.

[0008] The upper and lower ends of the outer side surface of the ball body are both provided with an installation ring groove corresponding to the sealing valve seat, the inner side surface of the installation ring groove is provided with two groups of top plates, the two groups of top plates are arranged in a circular array, the outer surface of the top plate is slidably connected with a staggered plate, and the outer surface of the top plate is provided with a driving unit.

[0009] Further, the shape of the top plate and the staggered plate is circular arc, and the combined width value of the staggered plate and the top plate is less than the depth value of the installation ring groove.

[0010] Further, the driving unit comprises two groups of driving grooves arranged in a circular array in the ball body, each group of driving grooves is two, and is symmetrically distributed on both sides of the top plate, the inner surface of the driving groove is slidably connected with a driving rod, and the surface of the top plate is symmetrically provided with a fault containing groove.

[0011] Further, the bottom of the valve body is provided with an adjusting pipe, the adjusting pipe comprises an internal thread segment and a sealing segment, the inner side surface of the internal thread segment is threadedly connected with an adjusting stud, the end of the adjusting stud is rotatably connected with a sealing piston, the surface of the ball body is provided with an embedding groove, and the driving groove is communicated with the embedding groove.

[0012] Further, the end of the adjusting pipe is inserted into the inner part of the insertion slot, and the sealing section is arranged on the side of the adjusting pipe close to the ball, and the sealing piston is in sliding connection with the inner side of the sealing section.

[0013] Further, a T-shaped guide strip is arranged on the outer side of the top plate, a guide groove is arranged on the surface of the misalignment plate, an inner groove is arranged on the surface of the T-shaped guide strip, one end of the inner groove is throughly arranged, a translation block is in sliding connection with the inner groove and is arranged on the inner wall of the guide groove, and a return spring is arranged between the translation block and the inner wall of the inner groove.

[0014] Further, an inner thread groove is arranged on the bottom of the valve body, a connecting sleeve is in thread connection with the inner side of the inner thread groove, the connecting sleeve is fixedly connected to the outer part of the adjusting pipe, an adaptive groove extending into the inner part of the valve body is arranged on the inner wall of the inner thread groove, and a sealing ring is arranged on the end of the connecting sleeve and is sleeved on the outer part of the adjusting pipe.

[0015] Further, the adaptive groove is matched with the adjusting pipe.

[0016] Compared with the prior art, the compact high-pressure ball valve has the following beneficial effects:

[0017] 1. The compact high-pressure ball valve can separate the ball from the sealing valve seat when the ball is stuck, so that the rotation of the ball is no longer limited, and the state of the ball can be adjusted in time according to the needs.

[0018] 2. The compact high-pressure ball valve can effectively ensure the sliding stability and smoothness between the misalignment plate and the top plate during the rotation of the ball, so that the rotation resistance of the ball is greatly reduced, the misalignment movement stability between the misalignment plate and the top plate is better, and the misalignment plate can be automatically reset subsequently.

[0019] 3. The compact high-pressure ball valve can be taken out or installed as a whole unit by rotating the connecting sleeve 51 to make it exit or rotate into the inner thread groove 5, so that the installation and subsequent maintenance of the adjusting pipe 34 are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 The overall structural schematic diagram provided for the embodiment of the present application;

[0022] Figure 2 The internal structural schematic diagram of the valve body provided for the embodiment of the present application;

[0023] Figure 3 The internal structural schematic diagram of the valve body provided for the embodiment of the present application; Figure 2 The enlarged structural schematic diagram of A in the middle;

[0024] Figure 4 The spherical structural schematic diagram provided for the embodiment of the present application;

[0025] Figure 5 The lateral cross-sectional structural schematic diagram of the sphere provided for the embodiment of the present application;

[0026] Figure 6 The structural schematic diagram of the top plate and the staggered plate provided for the embodiment of the present application;

[0027] Figure 7 The lateral cross-sectional structural schematic diagram of the staggered plate provided for the embodiment of the present application;

[0028] Figure 8 The structural schematic diagram of the connection sleeve and the valve body in the separated state provided for the embodiment of the present application.

[0029] Explanation of reference signs:

[0030] 1, valve body; 101, sphere; 102, through groove; 103, accommodating ring groove; 104, supporting spring; 105, sealing valve seat; 2, mounting ring groove; 21, top plate; 22, staggered plate; 3, driving groove; 31, driving rod; 32, fault accommodating groove; 33, guide head; 34, adjusting pipe; 341, internal thread section; 342, sealing section; 35, adjusting stud; 36, sealing piston; 37, embedding groove; 4, T-shaped guide strip; 41, guide groove; 42, inner groove; 43, translation block; 44, return spring; 5, internal thread groove; 51, connection sleeve; 52, matching groove; 53, sealing ring. DETAILED DESCRIPTION

[0031] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0032] Example 1:

[0033] Please refer to Figures 1-6The utility model provides a compact high pressure ball valve, including valve body 1, the ball 101 of rotation in the inside of valve body 1 and the through groove 102 of through valve body 1 with the ball 101, the inside wall of valve body 1 is opened in the accommodation ring groove 103 of both sides of ball 101 symmetry, and the inside wall of accommodation ring groove 103 is equidistantly installed with a plurality of support springs 104, and the same sealing valve seat 105 is fixedly installed at the end of a plurality of support springs 104;

[0034] The upper and lower ends of the outer side surface of the ball 101 are provided with installation ring grooves 2 corresponding to the sealing valve seat 105, and the inner side surface of the installation ring grooves 2 is provided with two groups of top plates 21, which are arranged in a circular array. The outer part of the top plate 21 is slidably connected with a staggered plate 22. The outer part of the top plate 21 is provided with a driving unit for driving the staggered plate 22 to move and separate the sealing valve seat 105 from the ball 101.

[0035] It should be noted that the top plate 21 and the staggered plate 22 are both arc-shaped, and the combined width of the staggered plate 22 and the top plate 21 is less than the depth of the installation ring groove 2, so that in the non-ejection state, it can be completely accommodated inside the installation ring groove 2, so that the arrangement of the staggered plate 22 and the top plate 21 will not affect the sealing performance of the sealing valve seat 105.

[0036] The specific structure of the driving unit will be described below. The driving unit includes two groups of driving grooves 3 arranged in a circular array inside the ball 101. Each group of driving grooves 3 is two, and is symmetrically distributed on both sides of the top plate 21. A driving rod 31 is slidably connected inside the driving groove 3. Two sides of the surface of the top plate 21 are symmetrically provided with fault tolerance grooves 32. The end of the driving rod 31 is fixedly connected with a guide head 33 slidably connected inside the fault tolerance groove 32.

[0037] Furthermore, the bottom of the valve body 1 is provided with an adjusting pipe 34. The adjusting pipe 34 includes an internally threaded section 341 and a sealing section 342. The inner side surface of the internally threaded section 341 is threadedly connected with an adjusting stud 35. The end of the adjusting stud 35 is rotatably connected with a sealing piston 36. The surface of the ball 101 is provided with an embedding groove 37. The driving groove 3 is in communication with the embedding groove 37.

[0038] In addition, the end of the adjusting pipe 34 is embedded inside the embedding groove 37, and the sealing section 342 is arranged on the side of the adjusting pipe 34 close to the ball 101. The sealing piston 36 is slidably connected with the inner side surface of the sealing section 342.

[0039] When the sealing valve seat 105 and the valve body 1 are stuck and cannot be adjusted, the operator manually rotates the adjusting stud 35 to push the sealing piston 36 to move to the inside of the sealing section 342, and extrudes the gas inside into the driving groove 3, so that the gas pressure in the driving groove 3 increases, and the driving rod 31 moves outward, the driving rod 31 moves the top plate 21 and the staggered plate 22 outward, and pushes the sealing valve seat 105 to move away from the ball 101, at this time, the sealing valve seat 105 no longer limits the rotation of the ball 101, at this time, the operator can adjust the state of the ball 101 to make it close or open.

[0040] Embodiment 2:

[0041] Please refer to Figures 5-7 In order to ensure the smooth stagger between the staggered plate 22 and the top plate 21, the outer side of the top plate 21 is provided with a T-shaped guide strip 4, the surface of the staggered plate 22 is provided with a guide groove 41 matched with the T-shaped guide strip 4, the surface of the T-shaped guide strip 4 is provided with an inner groove 42, one end of the inner groove 42 is throughly arranged, the inner wall of the guide groove 41 is provided with a translation block 43 slidingly connected with the inner groove 42, and the translation block 43 and the inner wall of the inner groove 42 are provided with a reset spring 44.

[0042] After the top plate 21 and the staggered plate 22 move outward and abut against the surface of the sealing valve seat 105, and push the sealing valve seat 105 away, when the top plate 21 rotates with the ball 101, the staggered plate 22 will slide relative to the top plate 21 under the friction resistance between the sealing valve seat 105, at this time, under the cooperation and guidance of the T-shaped guide strip 4 and the guide groove 41, the stability of the relative sliding of the two is better, and when the relative sliding is performed, the translation block 43 moves to compress the reset spring 44, so that after the staggered plate 22 reversely moves into the installation ring groove 2, it is separated from the sealing valve seat 105, and is automatically reset under the elastic force of the reset spring 44.

[0043] It should be noted that when normally ejected to the limit position, the centers of the two top plates 21 coincide, so that when the top plate 21 and the staggered plate 22 slide relative to each other, the staggered plate 22 on one top plate 21 can move to be slidingly connected with the other top plate 21, so that the two groups of top plates 21 can simultaneously provide support force for the two groups of staggered plates 22, so that the stability of the staggered plate 22 in the working process is better.

[0044] Embodiment 3:

[0045] Please refer to Figure 8The bottom of the valve body 1 is provided with an inner threaded groove 5, the inner side surface of the inner threaded groove 5 is threadedly connected with a connecting sleeve 51, the connecting sleeve 51 is fixedly connected to the outside of the adjusting pipe 34, the inner wall of the inner threaded groove 5 is provided with an adapting groove 52 extending to the inside of the valve body 1, and the outside of the adjusting pipe 34 is sleeved with a sealing ring 53 located at the end of the connecting sleeve 51.

[0046] It should be noted that the specification of the adapting groove 52 is matched with the adjusting pipe 34, so that the adjusting pipe 34 can be tightly combined with the inner wall of the adapting groove 52 after being embedded into the inside of the adapting groove 52.

[0047] By unitizing the connecting sleeve 51 and the adjusting pipe 34 and the like, when installing or subsequently taking down, only the connecting sleeve 51 needs to be rotated to be taken out of or rotated into the inner threaded groove 5, so that the whole unit can be taken out or installed, thereby facilitating the installation and subsequent maintenance of the adjusting pipe 34.

[0048] The above only describes some exemplary embodiments of the present application in a descriptive manner, and it is needless to say that those skilled in the art can modify the described embodiments in various manners without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A compact high-pressure ball valve, comprising a valve body (1), a ball (101) rotating inside the valve body (1), and a through groove (102) penetrating the valve body (1) and the ball (101), characterized in that, The valve body (1) has symmetrically opened receiving annular grooves (103) on both sides of the ball (101) on the inner wall. The inner wall of the receiving annular groove (103) is equidistantly installed with a number of support springs (104) in a circular shape. The ends of the support springs (104) are fixedly installed with the same sealing valve seat (105). The upper and lower ends of the outer side of the ball (101) are provided with mounting annular grooves (2) corresponding to the sealing valve seat (105). Two sets of top plates (21) are installed on the inner side of the mounting annular grooves (2). The two sets of top plates (21) are arranged in a circumferential array. A misalignment plate (22) is slidably connected to the outside of the top plate (21). A driving unit is provided on the outside of the top plate (21). The driving unit is used to drive the misalignment plate (22) to move and push the sealing valve seat (105) away from the ball (101). The drive unit includes two sets of drive slots (3) arranged in a circular array inside the sphere (101). Each set of drive slots (3) consists of two slots, which are symmetrically distributed on both sides of the top plate (21). A drive rod (31) is slidably connected inside the drive slot (3). Fault tolerance slots (32) are symmetrically opened on both sides of the surface of the top plate (21). A guide head (33) is fixedly connected to the end of the drive rod (31) and slidably connected inside the fault tolerance slot (32). The top plate (21) is equipped with a T-shaped guide strip (4) on its outer side. The misaligned plate (22) has a guide groove (41) adapted to the T-shaped guide strip (4) on its surface. The T-shaped guide strip (4) has an inner groove (42) on its surface. One end of the inner groove (42) is through. The inner wall of the guide groove (41) is equipped with a translation block (43) that is slidably connected to the inner groove (42). A reset spring (44) is installed between the translation block (43) and the inner wall of the inner groove (42).

2. A compact high-pressure ball valve according to claim 1, characterized in that, The top plate (21) and the misaligned plate (22) are both arc-shaped, and the combined width of the misaligned plate (22) and the top plate (21) is less than the depth of the mounting ring groove (2).

3. A compact high-pressure ball valve according to claim 2, characterized in that, The bottom of the valve body (1) is equipped with an adjusting tube (34), which includes an internal thread section (341) and a sealing section (342). The inner side of the internal thread section (341) is threaded with an adjusting stud (35), and the end of the adjusting stud (35) is rotatably connected to a sealing piston (36). The surface of the ball (101) is provided with a slot (37), and the drive groove (3) is connected to the slot (37).

4. A compact high-pressure ball valve according to claim 3, characterized in that, The end of the regulating tube (34) is inserted into the slot (37), and the sealing section (342) is located on the side of the regulating tube (34) near the ball (101). The sealing piston (36) is slidably connected to the inner side of the sealing section (342).

5. A compact high-pressure ball valve according to claim 4, characterized in that, The bottom of the valve body (1) is provided with an internal thread groove (5), and the inner side of the internal thread groove (5) is threaded with a connecting sleeve (51). The connecting sleeve (51) is fixedly connected to the outside of the regulating pipe (34). The inner wall of the internal thread groove (5) is provided with an adapter groove (52) extending into the inside of the valve body (1). The outside of the regulating pipe (34) is fitted with a sealing ring (53) located at the end of the connecting sleeve (51).

6. A compact high-pressure ball valve according to claim 5, characterized in that, The specifications of the adapter groove (52) are compatible with those of the regulating tube (34).

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