Valve rod of wedge type throttle valve

Abstract

The utility model provides a wedge type throttle valve rod, which comprises a valve core and a valve rod, the valve core is provided with a wedge-shaped mounting hole, the end part of the valve rod is provided with a wedge-shaped mounting head, and the wedge-shaped mounting hole is in interference fit with the wedge-shaped mounting head; by means of the connecting mode, the valve rod and the valve element are connected into a whole, so that the overall strength of the valve rod is improved, the valve rod can be normally used under severe working conditions, the service life of the valve rod is guaranteed, and the erosion-resistant and corrosion-resistant effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil exploitation, in particular to a wedge-type throttle valve stem. Background Art

[0002] The oil production process requires rotating the throttle valve stem to control wellhead pressure, maintain underpressure balance during drilling operations, and maintain a stable underpressure value. The throttle valve consists of two distinct structures: a valve core and a valve stem, which are connected by an interference fit and a pin to form a single unit. High-speed, high-pressure fluids can cause the valve stem to vibrate and fatigue, leading to rapid fracture of the throttle stem within the valve core, resulting in loss of throttling performance. This connection method has a short service life and significantly impacts drilling operations.

[0003] Therefore, there is an urgent need for a wedge-type throttle valve stem that can solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a wedge-type throttle valve stem to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a wedge-type throttle valve stem, comprising a valve core and a valve stem, wherein the valve core is provided with a wedge-shaped mounting hole, the end of the valve stem is provided with a wedge-shaped mounting head, and the wedge-shaped mounting hole and the wedge-shaped mounting head are interference-fitted.

[0007] Preferably, the wedge-shaped mounting hole and the wedge-shaped mounting head both adopt a multi-section structure.

[0008] Preferably, the wedge-shaped mounting hole and the wedge-shaped mounting head are both four-section.

[0009] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0010] The utility model provides a wedge-type throttle valve stem, including a valve core and a valve stem, the valve core is provided with a wedge-shaped mounting hole, the end of the valve stem is provided with a wedge-shaped mounting head, and the wedge-shaped mounting hole is interference fit with the wedge-shaped mounting head; through the above-mentioned connection method, the valve stem and the valve core are connected as a whole, thereby improving the overall strength of the valve stem, enabling normal use under harsh working conditions, and ensuring its service life, achieving the effect of anti-erosion and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 The utility model provides a schematic diagram of the structure of a wedge-type throttle valve stem. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] The purpose of the utility model is to provide a wedge-type throttle valve stem to solve the problems existing in the prior art.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Example 1:

[0017] This embodiment provides a wedge-type throttle valve stem, such as Figure 1 As shown, it includes a valve core 1 and a valve stem 2. The valve core 1 is provided with a wedge-shaped mounting hole 3. The end of the valve stem 2 is provided with a wedge-shaped mounting head 4. The wedge-shaped mounting hole 3 and the wedge-shaped mounting head 4 are interference fit.

[0018] As a preferred embodiment, the wedge-shaped mounting hole 3 and the wedge-shaped mounting head 4 both adopt a multi-stage structure.

[0019] As a more preferred embodiment, the wedge-shaped mounting hole 3 and the wedge-shaped mounting head 4 are both four-section.

[0020] The utility model provides a wedge-type throttle valve stem, which connects the valve stem and the valve core into a whole through a wedge-shaped connection, thereby improving the overall strength of the valve stem, enabling normal use under harsh working conditions, and ensuring its service life, achieving the effects of anti-erosion and corrosion resistance.

[0021] This utility model uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only used to help understand the method and core concept of this utility model. At the same time, for those skilled in the art, according to the concept of this utility model, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A wedge-type throttle valve stem, comprising a valve core and a valve stem, characterized in that: The valve core is provided with a wedge-shaped mounting hole, and the end of the valve stem is provided with a wedge-shaped mounting head, and the wedge-shaped mounting hole and the wedge-shaped mounting head are interference-fitted.

2. The wedge-type throttle valve stem according to claim 1, characterized in that: The wedge-shaped mounting hole and the wedge-shaped mounting head both adopt a multi-section structure.

3. The wedge-type throttle valve stem according to claim 1, characterized in that: The wedge-shaped mounting hole and the wedge-shaped mounting head both have four sections.

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