High-pressure ball valve with self-sealing function

Abstract

The utility model relates to a high-pressure ball valve with a self-sealing function, and belongs to the technical field of high-pressure ball valve sealing. The high-pressure ball valve with the self-sealing function comprises a valve body, a valve ball, a fixing valve rod, a water outlet pipe, a water inlet pipe and a sealing lantern ring, a fixing disc is attached to one end of a second plug, water passing grooves are formed in the valve ball, the sealing lantern ring, a first plug, the second plug and the fixing disc, and when the water passing grooves of the valve ball and a pipeline are located on the same axis of the valve body, the water passing grooves are communicated with the fixing disc. A channel allowing liquid or gas to flow is formed in the valve body, the liquid or gas can pass through the valve ball, when the valve ball rotates, the side face of the valve ball can block the channel in the valve body, the two sides of the valve ball are sealed through the sealing lantern rings, water flow is intercepted by the outer wall of the valve ball, and through the integrated structure of the valve body, the splicing gaps of the valve body are reduced; and after the fixed disc is detached, a plurality of parts in the fixed disc can be poured out, subsequent maintenance and management are facilitated, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure ball valve sealing technology, and in particular to a high-pressure ball valve with self-sealing function. Background Technology

[0002] A high-pressure ball valve is a key control element that uses a rotating ball to control fluid flow or regulate flow. Its core structure consists of a valve body, ball, stem, and seals. The valve opens and closes by rotating the ball 90 degrees around the stem axis, offering significant advantages such as low fluid resistance, reliable sealing, and flexible operation. This valve can withstand pressure ratings up to Class 2500 (approximately 172 bar), making it suitable for high-pressure pipeline systems. Through a bidirectional sealing design, metal / elastic sealing structure, and automatic pressure relief function, it ensures zero-leakage sealing even under high pressure differentials, high temperatures, or corrosive media. The high-pressure ball valve supports multiple actuation methods, including manual, pneumatic, and electric operation, and offers rapid opening and closing while easily enabling remote automated control. Its valve body is made of various materials (such as stainless steel and alloy steel), and the seals are made of corrosion-resistant materials such as PTFE, capable of handling harsh media such as acids, alkalis, and oxygen. The top-entry design allows for online maintenance, reducing downtime; the seals are replaceable, lowering maintenance costs.

[0003] In existing high-pressure ball valve designs, to facilitate ball valve replacement, the entire valve body is generally designed in two or more pieces, with each piece enclosing the ball valve. Sealing rings need to be installed at the joint. Because the valve body interface is very close to the ball valve, the connection between the two valve bodies is prone to loosening in high-pressure environments, leading to liquid or gas leakage. Furthermore, the bolts at the connection between the two valve bodies are exposed to the outside and are easily corroded, making it difficult to open during maintenance and causing inconvenience in use. Utility Model Content

[0004] Therefore, it is necessary to provide a high-pressure ball valve with a self-sealing function, which addresses the issue that the connection between the two valve bodies is prone to loosening in high-pressure environments due to the proximity of the valve body interface to the ball valve location, leading to liquid or gas leakage. Furthermore, the exposed bolts at the connection between the two valve bodies are susceptible to corrosion, making it difficult to open during maintenance and causing inconvenience during use.

[0005] A high-pressure ball valve with self-sealing function includes: a valve body, wherein an outlet pipe and an inlet pipe are provided inside the valve body, the inlet pipe is located on one side of the outlet pipe, and the outlet pipe and the inlet pipe are interconnected.

[0006] A valve ball is movably disposed inside the water inlet pipe. Sealing rings are attached to both sides of the valve ball. A first plug is attached to one side of one of the sealing rings, and a second plug is attached to one side of the other sealing ring. A fixing plate is attached to one end of the second plug.

[0007] A fixed valve stem is mounted on the valve body and positioned above the valve ball.

[0008] In one embodiment, the inner diameter of the outlet pipe is smaller than the inner diameter of the inlet pipe, one end of the first plug is located inside the inlet pipe, and the other end of the first plug is inserted into the outlet pipe.

[0009] In one embodiment, the interior of the two sealing rings is semi-circular, and the side of the two sealing rings that are close to each other is in contact with the outer wall of the valve ball.

[0010] In one embodiment, both sealing rings slide inside the water inlet pipe, and both sealing rings have annular grooves on their surfaces.

[0011] In one embodiment, one end of the fixing plate is fixedly connected to the valve body by bolts, and one end of the fixing plate extends into the interior of the water inlet pipe and fits against one end of the second plug.

[0012] In one embodiment, one end of the fixed plate is at the same horizontal line as the outer wall of one side of the valve body, and a sealing ring is embedded on the surface of one end of the valve body and one end of the fixed plate.

[0013] In one embodiment, a limiting post is fixedly connected to the inner wall of the valve body, and one end of the limiting post is inserted into the valve ball.

[0014] In one embodiment, a sealing gasket is provided below the fixed valve stem, and a sealing sleeve is attached below the sealing gasket. Both the sealing gasket and the sealing sleeve are fitted onto the surface of the valve stem.

[0015] Beneficial effects

[0016] 1. The valve ball, sealing ring, first plug, second plug, and fixed plate are all equipped with water passage grooves. When the fixed valve stem is rotated, the valve ball rotates inside the water inlet pipe. When the water passage groove of the valve ball and the pipe are on the same axis as the valve body, a channel for liquid or gas to flow is formed inside the valve body. Liquid or gas will pass through the valve ball. When the valve ball rotates, the side of the valve ball will block the channel inside the valve body. The two sides of the valve ball are sealed by the sealing ring, so that the water flow is intercepted by the outer wall of the valve ball. The integrated structure of the valve body reduces the gaps in the valve body assembly and reduces the risk of leakage. After the fixed plate is disassembled, multiple internal parts can be emptied out, which facilitates subsequent maintenance and management and increases work efficiency.

[0017] 2. The inlet pipe is mainly used for limiting the movement of multiple components. The stepped grooves of the outlet and inlet pipes limit the movement of the first plug. The axis of the first plug gradually extends outward, and the inner diameter of the first plug gradually increases, which can guide liquids and gases. The sealing ring is tightly attached to the outer wall of the valve ball. Multiple grooves on the surface of the sealing ring increase the deformation capacity, making the fit between the outer wall of the valve ball and the sealing ring higher. When the surface of the fixing plate is flush with the valve body, the valve body is connected to the external pipeline through a flange. The flange of the connected pipeline will cover the fixing plate and bolts. The fixing plate will be located inside the valve body to reduce contact with external air and corrosion. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall side cross-sectional structure of this utility model;

[0022] Figure 4 For the present utility model Figure 3 A schematic diagram of the structure at point A.

[0023] Figure label:

[0024] 100. Valve body; 101. Outlet pipe; 102. Inlet pipe; 103. Limiting post; 200. Valve ball; 300. Sealing ring; 400. First plug; 500. Second plug; 600. Fixing disc; 700. Sealing ring; 800. Fixing valve stem; 801. Sealing gasket; 802. Sealing sleeve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0030] The following is combined with Figures 1-4 This invention describes a high-pressure ball valve with a self-sealing function.

[0031] In one embodiment, a high-pressure ball valve with a self-sealing function includes: a valve body 100, a valve ball 200, and a fixed valve stem 800. The valve body 100 has an outlet pipe 101 and an inlet pipe 102 inside. The inlet pipe 102 is located on one side of the outlet pipe 101, and the outlet pipe 101 and the inlet pipe 102 are interconnected. The valve ball 200 is movably disposed inside the inlet pipe 102. Sealing rings 300 are attached to both sides of the valve ball 200. A first plug 400 is attached to one side of one sealing ring 300, and a second plug 500 is attached to one side of the other sealing ring 300. A fixed disc 600 is attached to one end of the second plug 500. The fixed valve stem 800 is disposed on the valve body 100 and located above the valve ball 200.

[0032] In this embodiment, it should be noted that the fixed valve stem 800 is a relatively mature product on the market. It is mainly composed of a bracket, valve stem, bolt, packing and handle. Its core is to rotate the valve ball 200 through the valve stem. The connection between the fixed valve stem 800 and the valve body 100 needs to be sealed. A suitable fixed valve stem 800 can be selected for use according to actual needs, which will not be elaborated here.

[0033] An outlet pipe 101 and an inlet pipe 102 are made inside the valve body 100 and are connected to each other. The connection between the outlet pipe 101 and the inlet pipe 102 is a stepped groove. First, the inlet pipe 102 is inserted into the first plug 400, one of the sealing rings 300, the valve ball 200, the other sealing ring 300, the second plug 500, and the fixing plate 600 in sequence. When installing the valve ball 200, the cross opening needs to face upward. Then, the fixing valve stem 800 is inserted into the valve ball 200 so that the valve ball 200 and the valve stem of the fixing valve stem 800 rotate coaxially. The fixing plate 600 is fixed by bolts to ensure the tightness of the contact between the valve ball 200 and the two sealing rings 300.

[0034] The valve ball 200, sealing ring 300, first plug 400, second plug 500, and fixed plate 600 are placed along the inner wall of the water inlet pipe 102. Each of these components has a water passage groove. Rotating the fixed valve stem 800 causes the valve ball 200 to rotate. When the water passage groove of the valve ball 200 and the pipe are coaxial with the valve body 100, the liquid inside the valve body 100 can flow. When the valve ball 200 rotates, its side blocks the internal passage of the valve body 100. The two sides of the valve ball 200 are sealed by the sealing ring 300, causing the water flow to be intercepted by the outer wall of the valve ball 200. The integrated structure of the valve body 100 reduces assembly gaps and the risk of leakage. After disassembling the fixed plate 600, multiple internal parts can be emptied, facilitating subsequent maintenance and management and increasing work efficiency.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the inner diameter of the outlet pipe 101 is smaller than the inner diameter of the inlet pipe 102. One end of the first plug 400 is located inside the inlet pipe 102, and the other end of the first plug 400 is inserted into the outlet pipe 101. The interior of the two sealing rings 300 is semi-arc. The side of the two sealing rings 300 that is close to each other is in contact with the outer wall of the valve ball 200. Both sealing rings 300 slide inside the inlet pipe 102. Both sealing rings 300 have annular grooves on their surfaces.

[0036] In this embodiment, the inlet pipe 102 is mainly used for limiting multiple components. The stepped grooves of the outlet pipe 101 and the inlet pipe 102 limit the first plug 400. The axis of the first plug 400 gradually extends outward, and the inner diameter of the first plug 400 gradually increases, which can guide liquids and gases. The sealing ring 300 is in close contact with the outer wall of the valve ball 200. Multiple grooves on the surface of the sealing ring 300 increase the deformation capacity, making the fit between the outer wall of the valve ball 200 and the sealing ring 300 higher.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, one end of the fixing plate 600 is fixedly connected to the valve body 100 by bolts, and one end of the fixing plate 600 extends into the interior of the water inlet pipe 102 and fits against one end of the second plug 500;

[0038] In this embodiment, when the surface of the fixed plate 600 is flush with the valve body 100, the valve body 100 is connected to an external pipeline through a flange. The flange of the pipeline after docking will cover the fixed plate 600 and the bolts. The fixed plate 600 will be located inside the valve body 100, reducing contact with external air and corrosion.

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, one end of the fixed plate 600 is at the same horizontal line as the outer wall of one side of the valve body 100. A sealing ring 700 is embedded on the surface of one end of the valve body 100 and one end of the fixed plate 600. A limiting post 103 is fixedly connected to the inner wall of the valve body 100. One end of the limiting post 103 is inserted into the valve ball 200. A sealing gasket 801 is provided below the fixed valve stem 800. A sealing sleeve 802 is attached to the bottom of the sealing gasket 801. Both the sealing gasket 801 and the sealing sleeve 802 are fitted on the surface of the valve stem.

[0040] In this embodiment, when the valve body 100 is connected to the outside, the two sealing rings 700 are located at the inner and outer rings of the fixed plate 600, respectively, which can increase the sealing performance of the valve body 100 connected to the outside. The two sealing rings 700 protect the inner and outer sides of the fixed plate 600, reducing external environmental pollution. The limiting post 103 is integrally connected to the valve body 100. When the valve ball 200 is installed, the bottom needs to be inserted into the water inlet pipe 102. When the valve ball 200 contacts the limiting post 103, the valve ball 200 will rise inside the water inlet pipe 102. There is a gap at the inlet of the fixed valve rod 800 above the water inlet pipe 102, which can support the upward movement of the valve ball 200. The limiting post 103 is embedded in the groove below the valve ball 200, so that the valve ball 200 rotates around the limiting post 103 as the axis. Then the fixed valve rod 800 is pressed down to increase the stability of the valve ball 200 when rotating.

[0041] The upper part of the sealing sleeve 802 contacts the fixed valve stem 800 through the support of the sealing gasket 801. The groove inside the sealing sleeve 802 increases the deformation capacity of the body and improves the sealing effect of the sealing sleeve 802. The sealing sleeve 802 is embedded in the inner wall of the valve body 100, reducing the leakage of liquid or gas inside the valve body 100 and increasing safety.

[0042] Working principle:

[0043] The valve ball 200, sealing ring 300, first plug 400, second plug 500 and fixed plate 600 are all provided with water passage grooves. Rotating the fixed valve stem 800 will cause the valve ball 200 to rotate inside the water inlet pipe 102.

[0044] When the water passage groove of the valve ball 200 and the pipeline are on the same axis as the valve body 100, a channel is formed inside the valve body 100 that allows liquid or gas to flow, and the liquid or gas will pass through the valve ball 200.

[0045] When the valve ball 200 rotates, the side of the valve ball 200 blocks the internal channel of the valve body 100. The two sides of the valve ball 200 are sealed by the sealing collar 300, so that the water flow is intercepted by the outer wall of the valve ball 200. The one-piece structure of the valve body 100 reduces the gaps in the assembly of the valve body 100 and reduces the risk of leakage. After the fixed plate 600 is disassembled, multiple internal parts can be emptied out, which facilitates subsequent maintenance and management and increases work efficiency.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A high-pressure ball valve with self-sealing function, characterized in that, include: A valve body (100) is provided with an outlet pipe (101) and an inlet pipe (102) inside the valve body (100). The inlet pipe (102) is located on one side of the outlet pipe (101), and the outlet pipe (101) and the inlet pipe (102) are interconnected. A valve ball (200) is movably disposed inside the water inlet pipe (102). Sealing rings (300) are attached to both sides of the valve ball (200). A first plug (400) is attached to one side of one of the sealing rings (300), and a second plug (500) is attached to one side of the other sealing ring (300). A fixing plate (600) is attached to one end of the second plug (500). A fixed valve stem (800) is disposed on the valve body (100) and located above the valve ball (200).

2. The high-pressure ball valve with self-sealing function according to claim 1, characterized in that, The inner diameter of the outlet pipe (101) is smaller than the inner diameter of the inlet pipe (102). One end of the first plug (400) is located inside the inlet pipe (102), and the other end of the first plug (400) is inserted into the outlet pipe (101).

3. The high-pressure ball valve with self-sealing function according to claim 1, characterized in that, The interior of the two sealing rings (300) is semi-circular, and the side of the two sealing rings (300) that are close to each other is in contact with the outer wall of the valve ball (200).

4. The high-pressure ball valve with self-sealing function according to claim 3, characterized in that, Both sealing rings (300) slide inside the water inlet pipe (102), and annular grooves are provided on the surface of both sealing rings (300).

5. The high-pressure ball valve with self-sealing function according to claim 1, characterized in that, One end of the fixing plate (600) is fixedly connected to the valve body (100) by bolts. One end of the fixing plate (600) extends into the interior of the water inlet pipe (102) and fits against one end of the second plug (500).

6. The high-pressure ball valve with self-sealing function according to claim 5, characterized in that, One end of the fixed plate (600) is on the same horizontal line as the outer wall of one side of the valve body (100), and a sealing ring (700) is embedded on the surface of one end of the valve body (100) and one end of the fixed plate (600).

7. The high-pressure ball valve with self-sealing function according to claim 1, characterized in that, A limiting post (103) is fixedly connected to the inner wall of the valve body (100), and one end of the limiting post (103) is inserted into the valve ball (200).

8. The high-pressure ball valve with self-sealing function according to claim 1, characterized in that, A sealing gasket (801) is provided below the fixed valve stem (800), and a sealing sleeve (802) is attached to the bottom of the sealing gasket (801). Both the sealing gasket (801) and the sealing sleeve (802) are fitted onto the surface of the valve stem.

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