A type of flow valve

Abstract

This utility model provides a one-way valve, belonging to the field of fluid control technology, including a valve body, an upper connector, a valve seat, a lower connector, a spring, and a valve core. The valve body has a valve cavity containing a first settling hole, a second settling hole, and a third settling hole. The spring is installed in the first settling hole, and the valve core is installed on the upper part of the spring and placed in the second settling hole. The valve body and the valve seat are connected and limited by the third settling hole. One end of the valve seat has a connector with a sealing groove, and the other end has a sealing gland. The valve body is connected to the upper connector, and the valve seat is connected to the lower connector. This utility model simplifies the structure of the one-way valve, reduces manufacturing difficulty and maintenance costs, and improves production efficiency. Disassembly and maintenance are convenient, improving the efficiency and reliability of the one-way valve.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and in particular to a single-flow valve. Background Technology

[0002] A water injection well is a well used to inject water into an oil reservoir. Water is injected into the reservoir through the water injection well to maintain or restore the reservoir pressure. The water injection pipeline of the water injection well needs to be connected to a check valve to control the unidirectional flow of water and prevent backflow.

[0003] In water injection well operations, check valves play a crucial role, ensuring that fluid flows in only one direction and preventing backflow in the pipeline, thereby maintaining the stability and safety of the water injection system. However, traditional check valve designs often suffer from problems such as complex structure, unstable sealing performance, susceptibility to damage, and inability to be disassembled for maintenance. This not only affects water injection efficiency but also increases maintenance costs. Therefore, developing a check valve that is simple in structure, reliable in sealing, and durable is particularly important.

[0004] A one-way valve disclosed in patent application number CN201920877543.X has a valve seat at the lower part of the valve body, a valve cavity above the valve seat, a valve ball located in the valve cavity, and the valve ball and the valve seat at the lower part of the valve body cooperate to seal. The valve body has a constraint hole inside, located above the valve cavity. A spring is placed inside the valve body, with the lower end of the spring resting on a shoulder above the constraint hole. A valve cover is installed inside the valve body, with the upper shoulder of the valve cover resting on the upper end of the spring. The lower part of the valve cover has a cylindrical boss that mates with the constraint hole. An upper connector connects to the valve body, and the lower end of the upper connector presses against the valve cover, causing the lower boss of the valve cover to be positioned within the constraint hole. The valve cover has a conical shoulder inside. The inner diameter of the valve cover above the conical shoulder is larger than the diameter of the valve ball, while the inner diameter of the valve cover below the conical shoulder is smaller than the diameter of the valve ball. A connecting groove is provided at the lower part of the valve cover, and a slot is machined on the valve cover, opening downwards. In this invention, the valve ball seals with the valve seat at the lower part of the valve body. The valve ball has corroded and scaled, resulting in poor sealing performance, short service life, and low reliability of the one-way valve.

[0005] The utility model patent with patent application number CN201620308557.6, entitled "A Detachable One-Way Valve," describes a valve seat installed inside the lower end of a valve cover, with the valve seat and valve cover connected by threads. A steel ball is placed inside the valve cover and positioned on the valve seat. A plug is connected to the upper end of the valve cover by threads. The diameter of the steel ball is larger than the inner diameter of the valve seat. The valve cover has multiple outlets, evenly distributed around the circumference of the valve cover above the steel ball. A sealing gasket is placed between the valve seat and the valve cover. This utility model provides a detachable one-way valve that, while retaining the original seat seal function, allows for easy disassembly, cleaning, and replacement of parts; however, its sealing performance is unstable and it is easily damaged. Utility Model Content

[0006] To overcome the problems of poor sealing performance and high maintenance costs of existing valves, this utility model provides a one-way valve. This utility model simplifies the structure of the one-way valve, reduces manufacturing difficulty and maintenance costs; improves the sealing performance of the one-way valve, ensuring effective prevention of fluid backflow under various working conditions; enhances the durability of the one-way valve, extends its service life, and reduces maintenance frequency.

[0007] The technical solution adopted in this utility model is as follows: A one-way valve includes a valve body, a valve seat, a spring, and a valve core. The valve body has a valve cavity with a first settling hole, a second settling hole, and a third settling hole. The spring is installed in the first settling hole, and the valve core is installed on the upper part of the spring and placed in the second settling hole. The valve body and the valve seat are connected and limited by the third settling hole. One end of the valve seat is provided with a connector with a sealing groove, and the other end of the valve seat is provided with a sealing gland. The valve body is connected to an upper connector, and the valve seat is connected to a lower connector.

[0008] The valve body has a connector with a sealing groove at one end and an internal thread at the other end.

[0009] The valve body and valve seat are connected together by external threads and limited by a third settling hole.

[0010] A sealing gasket is installed inside the sealing box.

[0011] The valve seat has an external thread and a second sealing groove on its outer wall, and a sealing ring is installed in the second sealing groove. The upper connector and the valve body are provided with an upper steel ring and connected by an upper clamp.

[0012] A lower steel ring is provided between the lower connector and the valve seat, and they are connected by a lower clamp.

[0013] The upper clamp is a split clamp, consisting of two semi-circular clamps. The two ends of the two semi-circular clamps are connected and fixed in a ring shape by corresponding nuts and screws.

[0014] The beneficial effects of this utility model are: This invention simplifies the structure of the single-flow valve, reduces manufacturing difficulty and maintenance costs, and improves production efficiency.

[0015] This invention improves the sealing performance of the check valve, ensuring that backflow of fluid can be effectively prevented under various working conditions, thereby enhancing the stability and safety of the water injection system.

[0016] This invention enhances the durability of the flow valve, extends its service life, and reduces maintenance frequency and cost.

[0017] This invention is easy to disassemble and maintain, and improves the efficiency and reliability of the flow valve. Attached Figure Description

[0018] Figure 1 This is an exploded view of the overall structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0020] In the figure, the attached reference numerals are: 1. Valve body; 2. Upper clamp; 3. Upper steel ring; 4. Upper connector; 5. Valve seat; 6. Lower steel ring; 7. Lower connector; 8. Spring; 9. Valve cavity; 10. First settling hole; 11. Second settling hole; 12. Third settling hole; 13. Sealing groove one; 14. Internal thread; 15. Valve core; 16. Sealing gland; 17. Sealing groove two; 18. Sealing gasket; 19. Sealing ring; 20. Lower clamp; 21. Nut; 22. Screw; 23. External thread. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] The accompanying drawings show various structural schematic diagrams according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged and may have been omitted for clarity. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0023] Example 1: To overcome the problems of poor sealing performance and high maintenance costs in existing systems, this utility model provides the following... Figure 1 and Figure 2 The present invention provides a one-way valve, which simplifies the structure of the one-way valve, reduces manufacturing difficulty and maintenance costs, improves the sealing performance of the one-way valve, and ensures that fluid backflow can be effectively prevented under various working conditions. It also enhances the durability of the one-way valve, extends its service life, and reduces the frequency of maintenance.

[0024] A one-way valve includes a valve body 1, a valve seat 5, a spring 8, and a valve core 15. The valve body 1 has a valve cavity 9, which has a first settling hole 10, a second settling hole 11, and a third settling hole 12. The spring 8 is installed in the first settling hole 10, and the valve core 15 is installed on the upper part of the spring 8 and placed in the second settling hole 11. The valve body 1 and the valve seat 5 are connected and limited by the third settling hole 12. One end of the valve seat 5 is provided with a connector with a sealing groove 13, and the other end of the valve seat 5 is provided with a sealing gland 16. The valve body 1 is connected to an upper connector 4, and the valve seat 5 is connected to a lower connector 7.

[0025] The working principle of this utility model is as follows: The lower connector 7 of the one-way valve provided by this utility model is welded to the inlet of the water injection pipeline, and the upper connector 4 is welded to the outlet of the water injection pipeline. When the fluid flows normally, the fluid causes the valve core 15 to compress the spring 8, and the sealing gasket 18 of the valve core 15 and the valve seat 5 separates, and the fluid flows out through the one-way valve. When the fluid flows in reverse, the valve core 15 is subjected to force, the spring 8 extends, and the sealing gasket 18 of the valve core 15 and the valve seat 5 are tightly fitted to prevent the fluid from flowing back and to perform its one-way function.

[0026] This invention simplifies the structure of the check valve, reduces manufacturing difficulty and maintenance costs, and improves production efficiency. It enhances the sealing performance of the check valve, ensuring effective prevention of backflow under various operating conditions, thus improving the stability and safety of the water injection system. It also strengthens the durability of the check valve, extending its service life and reducing maintenance frequency and costs.

[0027] This invention is easy to disassemble and maintain, and improves the efficiency and reliability of the flow valve.

[0028] Example 2: Based on Embodiment 1, in this embodiment, preferably, one end of the valve body 1 is provided with a connector with a sealing groove 13, and the other end is provided with an internal thread 14.

[0029] Preferably, the valve body 1 and the valve seat 5 are connected together by external threads 23 and limited by a third settling hole 12.

[0030] Preferably, a sealing gasket 18 is installed inside the sealing box 16.

[0031] Preferably, the outer wall of the valve seat 5 is provided with an external thread 23 and a sealing groove 17, and a sealing ring 19 is installed in the sealing groove 17. Preferably, the upper connector 4 and the valve body 1 are provided with an upper steel ring 3 and connected by an upper clamp 2.

[0032] Preferably, a lower steel ring 6 is provided between the lower connector 7 and the valve seat 5, and they are connected by a lower clamp 20.

[0033] Preferably, the upper clamp 2 is a split clamp, comprising two semi-circular clamps, the two ends of which are connected and fixed in a ring shape by corresponding nuts 21 and screws 22.

[0034] In this invention, the upper clamp 2 and the lower clamp 20 have the same structure and the same connection method. Both the upper clamp 2 and the lower clamp 20 are split clamps, which makes the installation and disassembly of the split clamps convenient.

[0035] like Figure 1 and Figure 2 As shown, in this utility model, the valve body 1 is provided with a valve cavity 9, and the valve cavity 9 has a first settling hole 10, a second settling hole 11 and a third settling hole 12. One end of the valve body 1 is provided with a connector with a sealing groove 17, and the other end is provided with an internal thread 14. The spring 8 is installed in the first settling hole 10, and the valve core 15 is installed on the upper part of the spring 8 and placed in the second settling hole 11. The valve body 1 and the valve seat 5 are connected together by an external thread 23 and limited by the third settling hole 12.

[0036] In this utility model, one end of the valve seat 5 is provided with a connector with a second sealing groove 17, one end of the valve seat 5 is provided with a sealing box 16, a sealing gasket 18 is installed in the sealing box 16, the outer wall of the valve seat 5 is provided with an external thread 23 and a second sealing groove 17, a sealing ring 19 is installed in the second sealing groove 17, the upper steel ring 3 is installed between the upper connector 4 and the valve body 1 and is connected by an upper clamp 2, and the lower steel ring 6 is installed between the lower connector 7 and the valve seat 5 and is connected by a lower clamp 20.

[0037] The one-way valve provided by this utility model is used with the lower connector 7 welded to the inlet of the water injection pipeline and the upper connector 4 welded to the outlet of the water injection pipeline. When the fluid flows normally, the fluid causes the valve core 15 to compress the spring 8, and the sealing gasket 18 of the valve core 15 and the valve seat 5 separates, and the fluid flows out through the one-way valve.

[0038] When the fluid flows in reverse, the valve core 15 is stretched by the spring 8, and the valve core 15 and the valve seat 5 seal gasket 18 fit tightly together to prevent the fluid from flowing back and perform its single-flow function.

[0039] When the check valve malfunctions, the upper clamp 2 and lower clamp 20 can be removed, the check valve can be taken off, the connection between the valve body 1 and the valve seat 5 can be disconnected, and other components can be replaced or repaired to restore normal operation. This utility model facilitates disassembly and maintenance, improving the efficiency and reliability of the check valve.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0042] The examples above are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are identical or similar to this utility model fall within the scope of protection of this utility model. Device structures and method steps not described in detail in this utility model are existing technologies and will not be further described in this utility model.

Claims

1. A uniflow valve characterized by: The valve body (1), valve seat (5), spring (8), and valve core (15) are included. The valve body (1) is provided with a valve cavity (9), which has a first settling hole (10), a second settling hole (11), and a third settling hole (12). The spring (8) is installed in the first settling hole (10), and the valve core (15) is installed on the upper part of the spring (8) and placed in the second settling hole (11). The valve body (1) and the valve seat (5) are connected and limited by the third settling hole (12). One end of the valve seat (5) is provided with a connector with a sealing groove (13), and the other end of the valve seat (5) is provided with a sealing gland (16). The valve body (1) is connected to an upper connector (4), and the valve seat (5) is connected to a lower connector (7).

2. A uniflow valve according to claim 1, wherein: The valve body (1) is provided with a connector with a sealing groove (13) at one end and an internal thread (14) at the other end.

3. A uniflow valve according to claim 1, wherein: The valve body (1) and valve seat (5) are connected together by external thread (23) and limited by a third settling hole (12).

4. A uniflow valve according to claim 1, wherein: A sealing gasket (18) is installed inside the sealing box (16).

5. A uniflow valve according to claim 1, wherein: The valve seat (5) is provided with an external thread (23) and a sealing groove (17) on its outer wall, and a sealing ring (19) is installed in the sealing groove (17).

6. A uniflow valve according to claim 1, wherein: The upper connector (4) is provided with an upper steel ring (3) and connected with an upper clamp (2) between the valve body (1).

7. A uniflow valve according to claim 1, wherein: A lower steel ring (6) is provided between the lower connector (7) and the valve seat (5), and is connected by a lower clamp (20).

8. A uniflow valve according to claim 6, wherein: The upper clamp (2) is a split clamp, including two semi-circular clamps. The two ends of the two semi-circular clamps are connected and fixed in a ring shape by corresponding nuts (21) and screws (22).

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