Novel air compression check valve structure
By designing a new air-pressure single-flow valve structure and using pressure differential to control the movement of the piston and Verball, the problem of difficulty in controlling the conduction of the single-flow valve in the prior art is solved, and the control efficiency of the water injection process is improved.
Patent Information
- Application Number
- CN202422908981.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The single-flow valve structure of the existing oilfield water injection well is difficult to control the conduction state easily and independently, which affects the efficiency of the water injection process.
A new air compressed single-flow valve structure is designed, including joints, stop rings, top rods, main body, pistons, piston chambers, Verballs, ball seats and pins. By controlling the piston sliding and Verball movements, the valve state is realized.
The piston is controlled by pressure differential during liquid injection, and conveniently switches from closed state to single flow state, improving the control efficiency of the water injection process.
Smart Images
Figure CN223269956U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to oil exploitation, in particular to a novel air-compressed check valve structure. Background Art
[0002] At present, the standardized wellhead water injection process of oilfield water injection wells is a single channel. A check valve is installed on the water injection well string to control the connection between the oil pipe at the bottom of the string and the casing. The check valve plays an important role in the water injection process. Therefore, it is of great significance to design a new type of pneumatic check valve structure that is easy to control the conduction independently. Utility Model Content
[0003] The purpose of this application is to provide a new type of air pressure check valve structure to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a new type of pneumatic one-way valve structure, including a joint, a retaining ring, a push rod, a main body, a piston, a piston chamber, a valve ball, a ball seat and a pin. A joint is installed at one end of the main body and a piston chamber is installed at the other end. The piston chamber and the joint are both connected to the main body. A piston that blocks the piston chamber is slidably sleeved on the piston chamber. A pin that is plugged into the piston is installed on the outer thread of the piston chamber near the end. A ball seat is fixedly installed inside the end where the main body and the joint are connected, a push rod is fixedly installed on the end of the piston facing the ball seat, one end of the push rod passes through the inside of the ball seat, a retaining ring is fixedly installed inside the joint, a valve ball is provided between the retaining ring and the push rod, and a water outlet is provided on the side of the main body that is connected to its inner cavity.
[0005] Preferably, the piston chamber and the joint are both detachably connected to the main body thread.
[0006] Preferably, sealing rings are provided at the connection points between the piston cavity and the joint and the main body.
[0007] In summary, the technical effects and advantages of the utility model are:
[0008] When the new type of one-way valve is injected, the piston is under pressure. When the pressure difference exceeds the shearing force of the pin, the piston slides down into the cavity of the main body, and at the same time the valve ball falls into the ball seat, completing the action. The one-flow valve is converted from a closed state to a single-flow state, and the control is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0010] Figure 1 This is a structural schematic diagram of a new type of air compression check valve structure in an embodiment of the present application.
[0011] In the figure: 1-connector; 2-retaining ring; 3-elevator; 4-main body; 5-piston; 6-piston chamber; 7-valve ball; 8-ball seat; 9-pin. DETAILED DESCRIPTION
[0012] 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.
[0013] In the description of the present disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," "bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present disclosure and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0014] It should also be noted that the standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. Unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to the specific circumstances, and, in the absence of clear limitations, machines, parts, and equipment can all adopt conventional models in the prior art.
[0015] In this document, the term "comprising" is intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.
[0016] Example: Reference Figure 1 The shown novel pneumatic one-way valve structure includes a joint 1, a retaining ring 2, a push rod 3, a main body 4, a piston 5, a piston chamber 6, a valve ball 7, a ball seat 8 and a pin 9. A joint 1 is installed at one end of the main body 4 and a piston chamber 6 is installed at the other end. The piston chamber 6 and the joint 1 are both connected to the main body 4. A piston 5 is slidably sleeved on the piston chamber 6 to block the piston chamber 6. A pin 9 is installed on the outer side of the piston chamber 6 near the end to be plugged into the piston 5. A ball seat 8 is fixedly installed inside the end where the main body 4 and the joint 1 are connected. A push rod 3 is fixedly installed on the end of the piston 5 facing the ball seat 8. One end of the push rod 3 passes through the inside of the ball seat 8. A retaining ring 2 is fixedly installed inside the joint 1. A valve ball 7 is provided between the retaining ring 2 and the push rod 3. A water outlet is provided on the side of the main body 4 to be connected with its inner cavity.
[0017] With the above structure, the piston chamber 6 and the joint 1 are both detachably connected to the main body 4 through threads.
[0018] With the above structure, sealing rings are provided at the connection points between the piston chamber 6 and the joint 1 and the main body 4 .
[0019] In this new type, the joint 1 of the pneumatic check valve is connected to the bottom of the water injection pipe string, and the main body 6 is an air cavity. During the completion construction process, there is no fluid in the pipe string and the piston 5 is not subjected to pressure. When the completion pipe string is lowered to the designed depth and liquid is injected into the pipe string, the piston 5 begins to be pressurized. When the pressure difference exceeds the shear force of the pin 9, the piston 5 slides down into the chamber of the main body 6, and at the same time the valve ball 7 falls into the ball seat 8, completing the action, and the check valve is switched from a closed state to a single-flow state.
[0020] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A new type of air pressure check valve structure, characterized by: The invention comprises a joint (1), a retaining ring (2), a push rod (3), a main body (4), a piston (5), a piston cavity (6), a valve ball (7), a ball seat (8) and a pin (9), wherein one end of the main body (4) is provided with a joint (1) and the other end thereof is provided with a piston cavity (6), the piston cavity (6) and the joint (1) are both connected to the main body (4), a piston (5) for sealing the piston cavity (6) is slidably sleeved at the piston cavity (6), and the outer side of the piston cavity (6) near the end thereof is provided with a threaded mounting. A pin (9) is provided for plugging with the piston (5); a ball seat (8) is fixedly installed inside the end of the main body (4) connected to the joint (1); a push rod (3) is fixedly installed on the end of the piston (5) facing the ball seat (8); one end of the push rod (3) passes through the interior of the ball seat (8); a retaining ring (2) is fixedly installed inside the joint (1); a valve ball (7) is provided between the retaining ring (2) and the push rod (3); and a water outlet is provided on the side of the main body (4) and is communicated with its inner cavity.
2. A novel pneumatic check valve structure according to claim 1, characterized in that: The piston chamber (6) and the joint (1) are both detachably connected to the main body (4) by thread.
3. A novel pneumatic check valve structure according to claim 1, characterized in that: The piston chamber (6) and the joint (1) are both provided with sealing rings at the connection points with the main body (4).