Power steam pipe valve with bidirectional sealing performance

Abstract

The utility model discloses a kind of electric power steam pipeline valves with bidirectional sealing performance, it is related to electric power steam pipeline valve technical field, including, valve assembly, including valve body, the inside rotation of the valve body is connected with valve plate, the one side of the valve plate is fixed with valve rod, the top of the valve rod is fixed with electric control ware, the inside one side of the valve body is slidably connected with floating valve seat, sealing assembly, it is set to the inside of valve plate, including the first sliding cavity of being opened in the outer ring of valve plate.The utility model can realize bidirectional pressure bearing, and have compensation function, still can keep sealing after wearing, under the condition of guaranteeing bidirectional sealing, prolong service life, especially suitable for large pipe diameter pipeline, adopt metal hard sealing, utilize valve plate eccentricity setting, reduce operating torque, open and close more portable, simultaneously, in medium flow process, utilize water flow thrust to push first sealing ring to stick to floating valve seat, realize further sealing, greatly improve the sealing performance of valve.

Description

Technical Field

[0001] This utility model relates to the field of electric steam and water pipeline valve technology, and in particular to an electric steam and water pipeline valve with bidirectional sealing performance. Background Technology

[0002] In the operation of power systems, steam and water pipelines undertake the task of transporting high-temperature and high-pressure steam and water media. The stability of their transport directly affects the efficiency and safety of the unit. As a key control component of the pipeline, valves must meet core requirements such as reliable bidirectional sealing, adaptability to pressure fluctuations, and long-term durability. The valves commonly used in power steam and water pipelines already have basic control and sealing functions, such as blocking the medium through fixed valve seats and sealing rings. Some valves also integrate electric control drive structures to adapt to the needs of power automation operation and maintenance.

[0003] Currently, valves in power and water pipelines are typically one-way sealing structures. When reverse pressure, backflow demand, or system switching occurs, the one-way seal may cause the medium to backflow and leak, which can directly lead to safety hazards. Even in valves with a two-way sealing structure, prolonged contact and separation at the connection between the valve plate and the valve seat may cause wear on the seals, and long-term use will affect the sealing performance of the valve. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of this utility model and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the specification abstract and utility names, to avoid obscuring the purpose of this section, specification abstract, and utility names; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or existing electric steam and water pipeline valves with bidirectional sealing performance, this utility model is proposed.

[0006] Therefore, the problem that this utility model aims to solve is that one-way sealing may cause backflow of the medium and leakage, which will directly lead to safety hazards. Two-way sealing may cause wear of the sealing components, and long-term use will affect the sealing performance of the valve.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a power steam-water pipeline valve with bidirectional sealing performance, comprising a valve assembly including a valve body, a valve plate rotatably connected inside the valve body, a valve stem fixed to one side of the valve plate, an electric controller fixed to the top of the valve stem, a floating valve seat slidably connected to one side of the valve body, and a sealing assembly disposed inside the valve plate, including a first sliding cavity opened on the outer ring of the valve plate, a first water hole opened on one side of the first sliding cavity, a second water hole opened on the other side of the first sliding cavity, a second sealing ring slidably connected to the inner cavity of the first sliding cavity, a first sealing ring disposed on the outer ring of the valve plate, and a rubber tension spring fixed to one side of the first sealing ring.

[0008] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, wherein: an end cap is fixed to the bottom of the valve body, and a positioning ring is provided inside the end cap.

[0009] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the outer ring of the floating valve seat is provided with a sealing rubber ring, and the outer ring of the floating valve seat is slidably connected to the inner ring of the valve body.

[0010] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the outer ring of the valve plate has an arc-shaped surface structure, the inner ring of the floating valve seat has a conical surface structure, and the outer ring of the valve plate and the inner ring of the floating valve seat are slidably connected.

[0011] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the number of the first water hole and the second water hole are both sixteen, and they are evenly distributed around both sides of the valve plate.

[0012] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, a rubber spring is fixed on both sides of the second sealing ring, and one end of the rubber spring is fixed to the inner wall of the first sliding cavity.

[0013] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the outer ring of the valve plate is provided with a second sliding cavity, the second sliding cavity is connected to the first sliding cavity, a protrusion is provided on one side inside the second sliding cavity, and the rubber tension spring is fixed to the surface of the protrusion.

[0014] In a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the first sealing ring is slidably connected to the inside of the second sliding cavity, and the outer ring of the first sealing ring is in contact with the outer ring of the valve plate.

[0015] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the valve body is fixed with connecting seats at both the top and bottom, the valve stem is located inside the connecting seats, and a sealing ring is provided between the outer ring of the valve stem and the inside of the connecting seats.

[0016] As a preferred embodiment of the electric steam and water pipeline valve with bidirectional sealing performance described in this utility model, the rotation center of the valve plate is offset from the center of the valve body, and the rotation center of the valve plate is offset from its geometric center.

[0017] The beneficial effects of this utility model are as follows: By setting valve components and sealing components, and utilizing the sliding design of the floating valve seat, it can slide left and right under hydraulic propulsion, achieving bidirectional pressure bearing and having a compensation function. It can still maintain sealing performance after wear, extending service life while ensuring bidirectional sealing. It is especially suitable for large-diameter pipelines. The use of metal hard seal provides better sealing effect. The eccentric setting of the valve plate reduces the operating torque, making opening and closing easier. At the same time, during the medium flow process, the water flow thrust pushes the first sealing ring to press against the floating valve seat, achieving further sealing and greatly improving the valve's sealing performance. Attached Figure Description

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

[0019] Figure 1 This is a structural diagram of a valve for a power steam-water pipeline with bidirectional sealing performance.

[0020] Figure 2 This is a bottom view of a valve for a power steam-water pipeline with bidirectional sealing performance.

[0021] Figure 3 This is a top sectional view of a valve for a power steam-water pipeline with bidirectional sealing performance.

[0022] Figure 4 For electric steam and water pipeline valves with bidirectional sealing performance Figure 3 A magnified view of A in the middle.

[0023] Figure 5 This is an exploded view of a valve for a power steam-water pipeline with bidirectional sealing performance.

[0024] Figure 6 This is an exploded bottom view of a valve for a power steam-water pipeline with bidirectional sealing performance.

[0025] In the diagram: 1. Valve assembly; 11. Valve body; 12. Electronic controller; 13. End cap; 14. Valve stem; 15. Valve plate; 16. Floating valve seat; 17. Sealing ring; 18. Positioning ring; 2. Sealing assembly; 21. First sliding chamber; 22. First water hole; 23. Second water hole; 24. Second sealing ring; 25. Rubber spring; 26. Rubber tension spring; 27. First sealing ring; 28. Second sliding chamber. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a power-powered steam-water pipeline valve with bidirectional sealing performance. The power-powered steam-water pipeline valve with bidirectional sealing performance includes a valve assembly 1 and a sealing assembly 2. By setting the valve assembly 1 and the sealing assembly 2, bidirectional sealing can be achieved, so that the medium can be effectively sealed in both forward and reverse flow. The use of metal hard seal provides better sealing effect. The valve plate 15 is eccentrically set to reduce the operating torque. The water flow thrust pushes the first sealing ring 27 to stick to the floating valve seat 16 to achieve further sealing and greatly improve the sealing performance of the valve.

[0030] Specifically, valve assembly 1 includes valve body 11, valve plate 15 is rotatably connected inside valve body 11, valve stem 14 is fixed to one side of valve plate 15, electric controller 12 is fixed to the top of valve stem 14, and floating valve seat 16 is slidably connected to one side inside valve body 11.

[0031] By setting valve assembly 1, the advantages of eccentric butterfly valve and fixed ball valve are combined. It adopts floating valve seat 16 and soft and hard combination dual sealing design, which has bidirectional pressure bearing capacity, good sealing performance and can maintain bidirectional zero leakage for a long time.

[0032] Specifically, the sealing assembly 2 is disposed inside the valve plate 15, including a first sliding cavity 21 opened on the outer ring of the valve plate 15, a first water hole 22 opened on one side of the first sliding cavity 21, a second water hole 23 opened on the other side of the first sliding cavity 21, a second sealing ring 24 slidably connected to the inner cavity of the first sliding cavity 21, a first sealing ring 27 disposed on the outer ring of the valve plate 15, and a rubber tension spring 26 fixed on one side of the first sealing ring 27.

[0033] Example 2, refer to Figures 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0034] Specifically, it also includes an end cap 13 fixed to the bottom of the valve body 11, and a positioning ring 18 is provided inside the end cap 13.

[0035] By setting the end cap 13, the bottom of the valve body 11 can be sealed, and the valve stem 14 can be supported, so that it can be stably supported during rotation, thereby improving the stability of opening and closing the valve. At the same time, in conjunction with the positioning ring 18, the valve stem 14 can be positioned so that it will not shift during rotation.

[0036] Specifically, the outer ring of the floating valve seat 16 is fitted with a sealing ring 17, and the outer ring of the floating valve seat 16 is slidably connected to the inner ring of the valve body 11.

[0037] By setting a floating valve seat 16, the sliding design of the floating valve seat 16 allows it to slide left and right under hydraulic propulsion, enabling bidirectional pressure bearing and providing a compensation function. It can maintain sealing even after wear, thus extending service life while ensuring bidirectional sealing.

[0038] Specifically, the outer ring of the valve plate 15 has an arc-shaped surface structure, the inner ring of the floating valve seat 16 has a conical surface structure, and the outer ring of the valve plate 15 and the inner ring of the floating valve seat 16 are slidably connected.

[0039] The different sealing surface designs of the floating valve seat 16 and the valve plate 15 have automatic centering and automatic compensation functions, which make the contact stress distribution of the sealing surface uniform, resulting in good sealing performance and significantly extending the service life of the first sealing ring 27.

[0040] Specifically, there are sixteen first water holes 22 and sixteen second water holes 23, which are evenly distributed around both sides of the valve plate 15.

[0041] Specifically, rubber springs 25 are fixed on both sides of the second sealing ring 24, and one end of the rubber spring 25 is fixed to the inner wall of the first sliding cavity 21.

[0042] By setting a rubber spring 25, the second sealing ring 24 can be positioned so that it can remain in a central position without being pushed by the medium pressure, and can be automatically reset after the second sealing ring 24 moves.

[0043] Specifically, the outer ring of the valve plate 15 has a second sliding cavity 28, which is connected to the first sliding cavity 21. A protrusion is provided on one side inside the second sliding cavity 28, and a rubber spring 26 is fixed to the surface of the protrusion.

[0044] By setting protrusions, the rubber tension spring 26 can be supported, enabling it to provide traction force to the first sealing ring 27, so that it can automatically reset after the medium is no longer pushed.

[0045] Specifically, the first sealing ring 27 is slidably connected to the inside of the second sliding cavity 28, and the outer ring of the first sealing ring 27 is in contact with the outer ring of the valve plate 15.

[0046] Specifically, the valve body 11 has connecting seats fixed at the top and bottom, the valve stem 14 is located inside the connecting seats, and a sealing ring is provided between the outer ring of the valve stem 14 and the inside of the connecting seats.

[0047] By setting a sealing ring, the valve stem 14 and the valve body 11 can be sealed, improving the valve's sealing performance and preventing the medium from leaking from the valve body 11.

[0048] Specifically, the rotation center of the valve plate 15 is offset from the center of the valve body 11, and the rotation center of the valve plate 15 is offset from its geometric center. Through the eccentric setting of the valve plate 15, when the valve is opened, the sealing surface of the valve plate 15 can quickly disengage from the sealing surface of the floating valve seat 16, greatly reducing the friction of the sealing surface. At the same time, the valve torque is small, making opening and closing easier.

[0049] The valve plate 15 and the floating valve seat 16 are made of metal alloy, which can achieve hard-to-hard sealing.

[0050] When in use, start the electronic controller 12 to drive the valve stem 14 to rotate the valve plate 15. Because the rotation center of the valve plate 15 is off from its own geometric center and the center of the valve body 11, the valve plate 15 will first separate from the conical surface of the floating valve seat 16, and then rotate along the arc trajectory to open, so as to avoid friction on the sealing surface when opening and closing.

[0051] When the medium flows under positive pressure, the sealing principle is similar to that of an ordinary valve. At the same time, the medium enters the first sliding chamber 21 through the first water hole 22, which pushes the second sealing ring 24 to the right, causing it to disengage from the second sliding chamber 28. Subsequently, the medium flows into the second sliding chamber 28, and its thrust pushes the first sealing ring 27 to expand outward, so that the first sealing ring 27 is tightly attached to the conical surface of the floating valve seat 16, thereby achieving a further sealing effect.

[0052] When the medium pressure flows in the opposite direction, the medium pressure pushes the valve plate 15 and valve stem 14 to move backward in elastic deformation. The medium pressure also acts on the floating valve seat 16, pushing the floating valve seat 16 to move with the valve plate 15. The floating valve seat 16 is always kept in close contact with the valve plate 15 to maintain continuous sealing. During the movement of the floating valve seat 16, the sealing ring 17 on its surface is in close contact with the inner wall of the valve body 11 to achieve a sealing effect.

[0053] Simultaneously, the medium enters the first sliding cavity 21 through the second water hole 23, causing it to push the second sealing ring 24 to move to the left, disengaging it from the second sliding cavity 28. Subsequently, the medium flows into the second sliding cavity 28, and its thrust pushes the first sealing ring 27 outward, thereby causing the first sealing ring 27 to tightly adhere to the conical surface of the floating valve seat 16, achieving a further sealing effect and thus realizing bidirectional sealing.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A valve for a power steam-water pipeline with bidirectional sealing performance, characterized in that: include, The valve assembly (1) includes a valve body (11), a valve plate (15) is rotatably connected inside the valve body (11), a valve stem (14) is fixed on one side of the valve plate (15), an electric controller (12) is fixed on the top of the valve stem (14), and a floating valve seat (16) is slidably connected to one side inside the valve body (11). The sealing assembly (2) is disposed inside the valve plate (15) and includes a first sliding cavity (21) opened on the outer ring of the valve plate (15). A first water hole (22) is opened on one side of the first sliding cavity (21) and a second water hole (23) is opened on the other side of the first sliding cavity (21). A second sealing ring (24) is slidably connected to the inner cavity of the first sliding cavity (21). A first sealing ring (27) is provided on the outer ring of the valve plate (15). A rubber tension spring (26) is fixed on one side of the first sealing ring (27).

2. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 1, characterized in that: The bottom of the valve body (11) is fixed with an end cap (13), and a positioning ring (18) is provided inside the end cap (13).

3. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 2, characterized in that: The outer ring of the floating valve seat (16) is fitted with a sealing ring (17), and the outer ring of the floating valve seat (16) is slidably connected to the inner ring of the valve body (11).

4. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 3, characterized in that: The outer ring of the valve plate (15) has an arc-shaped surface structure, and the inner ring of the floating valve seat (16) has a conical surface structure. The outer ring of the valve plate (15) and the inner ring of the floating valve seat (16) are slidably connected.

5. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 4, characterized in that: The number of the first water hole (22) and the second water hole (23) are both sixteen, and they are evenly distributed around both sides of the valve plate (15).

6. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 5, characterized in that: Rubber springs (25) are fixed on both sides of the second sealing ring (24), and one end of the rubber springs (25) is fixed to the inner wall of the first sliding cavity (21).

7. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 6, characterized in that: The outer ring of the valve plate (15) is provided with a second sliding cavity (28), which is connected to the first sliding cavity (21). A protrusion is provided on one side inside the second sliding cavity (28), and the rubber tension spring (26) is fixed to the surface of the protrusion.

8. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 7, characterized in that: The first sealing ring (27) is slidably connected to the inside of the second sliding cavity (28), and the outer ring of the first sealing ring (27) is in contact with the outer ring of the valve plate (15).

9. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 8, characterized in that: The valve body (11) is fixed with connecting seats at the top and bottom. The valve stem (14) is located inside the connecting seat. A sealing ring is provided between the outer ring of the valve stem (14) and the inside of the connecting seat.

10. The electric steam-water pipeline valve with bidirectional sealing performance as described in claim 9, characterized in that: The rotation center of the valve plate (15) is offset from the center of the valve body (11), and the rotation center of the valve plate (15) is offset from its geometric center.

Images