Large high-pressure ball valve convenient to fix

Abstract

The large high-pressure ball valve overcomes the defects in the prior art, the large high-pressure ball valve convenient to fix is provided, the stress of the valve body is dispersed, stress concentration is not prone to occurring, and the service life is effectively prolonged; in order to solve the technical problem, according to the technical scheme, the large high-pressure ball valve convenient to fix comprises a valve body, a valve rod and a valve element, the valve element is arranged in the valve body in a matched mode, the valve element is connected with the valve rod located on the outer side of the valve body, and the valve element is driven by the valve rod to rotate in the valve body. The valve body is of a polygonal cylinder structure, the valve rod is arranged on the side face of the valve body, a plurality of installation through holes perpendicular to the axial direction of the valve body are formed in the positions, on the two sides of the valve rod, of the side face of the valve body, and the installation through holes and the valve element belong to different cavities in the valve body. The end faces of the two ends of the valve body are each provided with a plurality of connecting blind holes used for being connected with a flange. The high-pressure ball valve can be widely applied to the field of high-pressure ball valves.

Description

Technical Field

[0001] The utility model relates to a large high-pressure ball valve which is convenient to fix and belongs to the technical field of high-pressure ball valves. Background Art

[0002] A high-pressure ball valve is a valve in which the opening and closing member (ball) is driven by the valve stem and rotates around the axis of the valve stem.

[0003] High-pressure ball valves should be installed on stable, vibration-free, and impact-free pipelines. Avoid installation in locations with severe vibration or impact to reduce damage to the ball valve. At the same time, ensure that the ball valve is installed in a location that is easy to operate and maintain, facilitating future inspection and replacement.

[0004] During use, it was found that under the action of medium load, serious stress concentration will occur around the root of the valve stem and gland mounting hole of the high-pressure ball valve, resulting in excessive macro-through leakage flow and seriously insufficient sealing pressure ratio, causing medium leakage. Utility Model Content

[0005] The utility model overcomes the deficiencies in the prior art and provides a large high-pressure ball valve that is easy to fix. The force on the valve body is dispersed, stress concentration is not likely to occur, and the service life is effectively extended.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a large-scale high-pressure ball valve that is easy to fix, including a valve body, a valve stem and a valve core, the valve core is matched and arranged in the valve body, the valve core is connected to the valve stem located outside the valve body, and the valve core is driven to rotate in the valve body by the valve stem. The valve body has a polygonal cylindrical structure, the valve stem is arranged on the side of the valve body, and a plurality of mounting holes perpendicular to the axial direction of the valve body are arranged on the side of the valve body on both sides of the valve stem. The mounting through holes and the valve core belong to different chambers in the valve body, and a plurality of connecting blind holes for connecting to flanges are arranged on the end faces of both ends of the valve body.

[0007] Furthermore, the mounting through hole is a countersunk hole design.

[0008] Furthermore, the mounting through hole and the valve stem belong to different planes on the outside of the valve body.

[0009] Furthermore, two blind holes are provided on the side surface of the valve body which belongs to the same plane as the valve stem. The two blind holes are on the same straight line as the valve stem and are distributed parallel to the axis of the valve body.

[0010] Furthermore, the number of the mounting through holes is four, and two are symmetrically arranged on both sides of the valve stem.

[0011] Furthermore, one of the blind holes is a positioning pin hole, and the other blind hole is a lifting hole.

[0012] Furthermore, the lifting hole is a blind hole away from the valve stem.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a mounting through hole for connection and fixation on the side of the valve body, and fixes the valve body from the side by bolts, which reduces the radial vibration of the valve body, avoids stress concentration, and effectively extends the service life of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model Figure 1 .

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model Figure 2 .

[0018] In the figure: 1 is the valve body, 2 is the valve stem, 3 is the valve core, 4 is the installation through hole, 5 is the connecting blind hole, and 6 is the blind hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model is a large-scale high-pressure ball valve that is easy to fix, comprising a valve body 1, a valve stem 2 and a valve core 3. The valve core 3 is matched and arranged in the valve body 1, and the valve core 3 is connected to the valve stem 2 located on the outside of the valve body 1. The valve core 3 is driven to rotate in the valve body 1 by the valve stem 2. The valve body 1 is a polygonal cylindrical structure, and the valve stem 2 is arranged on the side of the valve body 1. A plurality of mounting through holes 4 perpendicular to the axial direction of the valve body 1 are provided on the side of the valve body 1 on both sides of the valve stem 2. The mounting through holes 4 are countersunk. The mounting through holes 4 and the valve stem 2 belong to different planes on the outside of the valve body 1. The mounting through holes 4 and the valve core 3 belong to different chambers in the valve body 1. A plurality of connecting blind holes 5 for connecting to flanges are provided on both end faces of the valve body 1, one of the blind holes 6 is a positioning pin hole, and the other blind hole 6 is a lifting hole. The lifting hole is a blind hole 6 away from the valve stem 2.

[0021] Two blind holes 6 are provided on the side of the valve body 1 which belongs to the same plane as the valve stem 2. The two blind holes 6 are on the same straight line as the valve stem 2 and are distributed parallel to the axis of the valve body 1. The blind holes 6 are used to fix and connect related components such as calibration or indication. There are four mounting through holes 4, and two are symmetrically arranged on both sides of the valve stem 2.

[0022] The utility model provides a mounting through hole 4 for connection and fixing on the side of the valve body 1, and fixes the valve body 1 from the side by bolts, which reduces radial vibration of the valve body 1, avoids stress concentration, and effectively extends the service life of the ball valve.

[0023] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A large high-pressure ball valve that is easy to fix, comprising a valve body (1), a valve stem (2) and a valve core (3), wherein the valve core (3) is matched and arranged in the valve body (1), and the valve core (3) is connected to the valve stem (2) located outside the valve body (1), and the valve core (3) is driven to rotate in the valve body (1) by the valve stem (2), characterized in that: The valve body (1) is a polygonal column structure, the valve stem (2) is arranged on the side of the valve body (1), and a plurality of mounting holes (4) perpendicular to the axial direction of the valve body (1) are arranged on the side of the valve body (1) on both sides of the valve stem (2). The mounting holes (4) and the valve core (3) belong to different chambers in the valve body (1), and a plurality of connecting blind holes (5) for connecting with flanges are arranged on the end faces of both ends of the valve body (1).

2. A large high-pressure ball valve that is easy to fix according to claim 1, characterized in that: The mounting through hole (4) is a countersunk hole design.

3. A large high-pressure ball valve that is easy to fix according to claim 1, characterized in that: The mounting through hole (4) and the valve stem (2) belong to different planes on the outside of the valve body (1).

4. A large high-pressure ball valve that is easy to fix according to claim 1, characterized in that: Two blind holes (6) are provided on the side surface of the valve body (1) which is in the same plane as the valve stem (2). The two blind holes (6) are in the same straight line as the valve stem (2) and are distributed parallel to the axis of the valve body (1).

5. A large high-pressure ball valve that is easy to fix according to claim 1, characterized in that: The number of the mounting through holes (4) is four, and two are symmetrically arranged on both sides of the valve stem (2).

6. A large high-pressure ball valve that is easy to fix according to claim 4, characterized in that: One of the blind holes (6) is a positioning pin hole, and the other blind hole (6) is a hoisting hole.

7. A large high-pressure ball valve that is easy to fix according to claim 6, characterized in that: The lifting hole is a blind hole (6) away from the valve stem (2).

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