Jacket heat preservation butterfly valve

Abstract

The utility model provides a jacket heat preservation butterfly valve, relates to valve equipment technical field, the jacket heat preservation butterfly valve comprises a valve body and a heat preservation structure, the middle portion of the valve body is provided with a flow channel in a penetrating mode, a butterfly plate is rotatably arranged in the flow channel, the heat preservation structure comprises a jacket and a ring pipe, the jacket is sleeved on the periphery side of the valve body, a heat preservation cavity is formed between the jacket and the valve body, and the ring pipe is arranged in the heat preservation cavity. The heat preservation cavity comprises an upper half cavity body and a lower half cavity body which are communicated with each other; the annular pipe comprises an upper half annular pipe and a lower half annular pipe, and a plurality of flow holes are formed in the sides, facing the flow channel, of the upper half annular pipe and the lower half annular pipe and communicate with the heat preservation cavity. The heat preservation medium in the upper semi-ring pipe and the heat preservation medium in the lower semi-ring pipe can flow to the heat preservation cavity through the corresponding flow holes, circulation of the heat preservation medium in the heat preservation cavity is achieved, heat can be continuously provided for the medium in the flow channel, the medium is kept within a certain temperature range, and the medium is prevented from being solidified or crystallized due to temperature reduction; and normal operation of a pipeline system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, and in particular to a jacketed insulated butterfly valve. Background Technology

[0002] A butterfly valve is a simple regulating valve that can also be used for on / off control of low-pressure pipeline media. The opening and closing element of a butterfly valve is a disc-shaped plate that rotates around its own axis within the valve body, thereby achieving the purpose of opening, closing, or regulation.

[0003] For example, patent CN202501020U discloses a four-bar linkage butterfly valve, comprising a valve body, valve shaft, butterfly plate, and valve seat. The valve stem is connected to one side of the butterfly plate via a four-bar linkage mechanism, the edge of which is fixedly connected to the inner wall of the valve body. When the valve is open, the butterfly plate first moves away from the valve seat and then gradually rotates, so there is no relative friction on the sealing surface, greatly improving the valve's service life. However, in actual use, this butterfly valve cannot keep the controlled medium warm. Due to its physical properties, some controlled media may solidify or crystallize when flowing through the valve, affecting the butterfly valve's performance. In severe cases, it can even cause the bushing and valve stem to seize, resulting in valve jamming or malfunction, affecting production. Utility Model Content

[0004] In view of this, this utility model proposes a jacketed insulated butterfly valve, which can solve the problem of solidification or crystallization that may occur during the use of butterfly valves.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a jacketed insulated butterfly valve, including a valve body and an insulation structure. A flow channel is formed through the middle of the valve body, and a butterfly plate is rotatably disposed within the flow channel. The insulation structure includes:

[0007] A jacket is fitted around the outer periphery of the valve body, and a heat-insulating cavity is formed between the jacket and the valve body. The heat-insulating cavity includes an upper half and a lower half that are connected to each other.

[0008] The ring pipe includes an upper ring pipe and a lower ring pipe. The upper ring pipe is located in the upper cavity, and the lower ring pipe is located in the lower cavity. Both the upper and lower ring pipes have flow holes on the side facing the flow channel. Multiple flow holes are arranged at intervals around the circumference of the ring pipe, and the flow holes are connected to the insulation cavity.

[0009] More preferably, the flow hole is provided with a flared part.

[0010] Based on the above technical solutions, preferably, the insulation structure further includes an insulation inlet pipe and an insulation outlet pipe disposed on the jacket, wherein the insulation inlet pipe connects the upper half-ring pipe and the lower half-ring pipe, and the insulation outlet pipe connects the upper half-ring pipe and the lower half-ring pipe.

[0011] More preferably, the heat-insulating inlet pipe includes an inlet pipe body, an inlet pipe channel is provided through the inlet pipe body, an inlet pipe baffle is provided in the inlet pipe channel, the inlet pipe baffle divides the inlet pipe channel into a first channel and a second channel, the first channel is connected to the upper half ring pipe, and the second channel is connected to the lower half ring pipe.

[0012] More preferably, the heat-insulating outlet pipe includes an outlet pipe body, and an outlet pipe channel is provided through the outlet pipe body. The outlet pipe channel is connected to the upper half-ring pipe, the lower half-ring pipe, and the heat-insulating cavity.

[0013] More preferably, the upper half-ring pipe and the lower half-ring pipe have a first connection position and a second connection position, the inlet pipe channel is aligned with the first connection position, and the outlet pipe channel is aligned with the second connection position.

[0014] More preferably, the heat-insulating inlet pipe and the heat-insulating outlet pipe are located on opposite sides of a first direction, which is one of the radial directions of the flow channel.

[0015] Based on the above technical solutions, preferably, it also includes a rotating structure, which is disposed on the valve body. The rotating end of the rotating structure is connected to a valve stem, which is connected to the butterfly plate. The rotation axis of the valve stem is perpendicular to the first direction.

[0016] More preferably, the butterfly plate is provided with a protective cover, which covers the outer periphery of the valve stem.

[0017] Based on the above technical solutions, preferably, the valve body is provided with a first mounting component and a second mounting component at both ends.

[0018] The jacketed insulated butterfly valve of this invention has the following advantages over the prior art:

[0019] (1) The insulation medium flows through the ring pipe. The upper half ring pipe is located in the upper cavity and the lower half ring pipe is located in the lower cavity. The insulation medium in the upper half ring pipe and the insulation medium in the lower half ring pipe can flow to the insulation cavity through the corresponding flow holes, thereby realizing the flow of the insulation medium in the insulation cavity. While ensuring the insulation of the butterfly plate, the uniformity of the insulation can also be achieved. This can continuously provide heat to the medium inside the flow channel, maintain the medium within a certain temperature range, and prevent the medium from solidifying or crystallizing due to temperature drop, thus ensuring the normal operation of the pipeline system.

[0020] (2) The flared part can increase the opening area of ​​the flow hole, making it easier for the insulation medium to enter the insulation cavity, improving the flow efficiency of the insulation medium, and further enhancing the insulation effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of the jacketed insulated butterfly valve of this utility model.

[0023] Figure 2 For this Figure 1 Side view;

[0024] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0025] Figure 4 As in one embodiment Figure 3 Enlarged view of part B;

[0026] Figure 5 In another embodiment Figure 3 Enlarged view of part B.

[0027] Figure label:

[0028] 1. Valve body; 11. Flow channel; 2. Insulation structure; 21. Jacket; 22. Insulation cavity; 221. Upper cavity; 222. Lower cavity; 23. Ring pipe; 231. Upper ring pipe; 232. Lower ring pipe; 24. Flow hole; 25. Flared part; 26. Insulated inlet pipe; 261. Inlet pipe body; 262. Inlet pipe channel; 2621. First channel; 2622. Second channel; 263. Inlet pipe baffle; 27. Insulated outlet pipe; 271. Outlet pipe body; 272. Outlet pipe channel; 28. First connection position; 29. ​​Second connection position; 3. Butterfly plate; 4. Rotating structure; 5. Valve stem; 6. Protective cover; 7. First mounting part; 8. Second mounting part; 9. Third mounting part; 10. Fourth mounting part. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] like Figures 1 to 5 As shown, this utility model provides a jacketed insulated butterfly valve, which includes a valve body 1 and an insulation structure 2. A flow channel 11 is provided through the middle of the valve body 1, and a butterfly plate 3 is rotatably arranged in the flow channel 11. The insulation structure 2 includes a jacket 21 and an annular pipe 23. The jacket 21 is sleeved on the outer periphery of the valve body 1, and an insulation cavity 22 is formed between the jacket 21 and the valve body 1. The insulation cavity 22 includes an upper half cavity 221 and a lower half cavity 222 that are connected to each other. The annular pipe 23 includes an upper half annular pipe 231 and a lower half annular pipe 232. The upper half annular pipe 231 is located in the upper half cavity 221, and the lower half annular pipe 232 is located in the lower half cavity 222. Flow holes 24 are provided on the side of the upper half annular pipe 231 and the lower half annular pipe 232 facing the flow channel 11. Multiple flow holes 24 are arranged at intervals around the annular pipe 23, and the flow holes 24 are connected to the insulation cavity 22.

[0031] The rotation of the butterfly plate 3 enables the butterfly valve to control the flow on and off. By adjusting the rotation angle of the butterfly plate 3, the opening and closing degree of the flow channel 11 can be adjusted to meet the flow regulation requirements under different operating conditions. The ring pipe 23 is used for the flow of the insulation medium. The upper half ring pipe 231 is located in the upper half cavity 221, and the lower half ring pipe 232 is located in the lower half cavity 222. The insulation medium in the upper half ring pipe 231 and the lower half ring pipe 232 can flow to the insulation cavity 22 through the corresponding flow holes 24, thereby realizing the flow of the insulation medium in the insulation cavity 22. While ensuring the insulation of the butterfly plate 3, it can also achieve the uniformity of insulation. This can continuously provide heat to the medium inside the flow channel 11, maintain the medium within a certain temperature range, and prevent the medium from solidifying or crystallizing due to temperature drop, thus ensuring the normal operation of the pipeline system.

[0032] Specifically, the insulation medium inside the jacket 21 can be selected from various materials with good insulation properties. For example, the insulation medium can be hot water or steam. Hot water and steam have high specific heat capacity and good thermal conductivity, which can effectively transfer heat to the insulation cavity 22 inside the jacket 21, thereby insulating the flow channel 11 inside the valve body 1 and preventing the fluid from condensing or freezing due to temperature drop.

[0033] In addition, the insulation medium can also be heat transfer oil. Heat transfer oil has high thermal stability and good fluidity, allowing it to remain liquid over a wide temperature range, facilitating circulation within the insulation cavity 22 and achieving a uniform insulation effect. Heat transfer oil has a wide operating temperature range and is suitable for various industrial scenarios, especially those requiring high-temperature insulation. In some applications, the insulation medium can also be air or other inert gases.

[0034] For example, when the insulation medium is heat transfer oil, the heat transfer oil flows downward under the influence of gravity. Therefore, the heat transfer oil can be connected to the upper half-ring pipe 231 and guided to the upper half of the insulation cavity 22. The bottom of the upper half-ring pipe 231 has a flow hole 24 communicating with the insulation cavity 22. The heat transfer oil in the upper half-ring pipe 231 can flow downward through the flow hole 24, thereby dispersing within the insulation cavity 22 and achieving a uniform insulation effect. Similarly, when the insulation medium is hot steam, the hot steam flows upward. Therefore, the hot steam can be connected to the lower half-ring pipe 232 and guided to the lower half of the insulation cavity 22. The top of the lower half-ring pipe 232 has a flow hole 24 communicating with the insulation cavity 22. The hot steam in the lower half-ring pipe 232 can flow upward through the flow hole 24, thereby dispersing within the insulation cavity 22 and achieving a uniform insulation effect.

[0035] The jacket 21 is made of a material with low thermal conductivity to reduce heat transfer and achieve insulation. Optionally, the jacket 21 is made of at least one of stainless steel, aluminum alloy, carbon steel, or composite materials. The material of the jacket 21 can be selected from materials with good insulation performance and corrosion resistance. For example, the jacket 21 can be made of stainless steel, which has high strength and corrosion resistance, enabling long-term use in complex industrial environments. Simultaneously, stainless steel has a low thermal conductivity, effectively reducing heat transfer and thus achieving good insulation. Furthermore, stainless steel has good processing properties, facilitating the manufacture and forming of the jacket 21.

[0036] In some applications, other materials, such as carbon steel, aluminum alloys, or composite materials, can be selected based on actual needs. Carbon steel is suitable for low-temperature and cost-sensitive applications, aluminum alloys are suitable for applications requiring lightweighting, and composite materials, such as glass fiber reinforced plastics, are suitable for specific chemically resistant environments.

[0037] Optionally, the flow hole 24 is provided with a flared part 25. The flared part 25 can increase the opening area of ​​the flow hole 24, making it easier for the insulation medium to enter the insulation cavity 22, improving the flow efficiency of the insulation medium, and further enhancing the insulation effect.

[0038] like Figures 1 to 5As shown, in some embodiments, the insulation structure 2 further includes an insulation inlet pipe 26 and an insulation outlet pipe 27 disposed on the jacket 21. The insulation inlet pipe 26 connects the upper half-ring pipe 231 and the lower half-ring pipe 232, and the insulation outlet pipe 27 connects the upper half-ring pipe 231 and the lower half-ring pipe 232. The insulation medium can enter the ring pipe 23 through the insulation inlet pipe 26, circulate in the insulation cavity 22, and then be discharged through the insulation outlet pipe 27. The insulation medium forms a circulation within the insulation cavity 22, ensuring the continuity and stability of the insulation effect.

[0039] Optionally, the insulation inlet pipe 26 includes an inlet pipe body 261, through which an inlet pipe channel 262 is formed. An inlet pipe partition 263 is provided within the inlet pipe channel 262, dividing the inlet pipe channel 262 into a first channel 2621 and a second channel 2622. The first channel 2621 communicates with the upper half-ring pipe 231, and the second channel 2622 communicates with the lower half-ring pipe 232. The partition 263 divides the inlet pipe channel 262 into the first channel 2621 and the second channel 2622, allowing the insulation medium to enter the upper half-ring pipe 231 and the lower half-ring pipe 232 according to a guide, ensuring uniform distribution of the insulation medium within the insulation cavity 22 and improving the uniformity of the insulation effect.

[0040] Optionally, the insulation outlet pipe 27 includes an outlet pipe body 271, with an outlet channel 272 extending through the outlet pipe body 271. The outlet channel 272 is connected to the upper half-ring pipe 231, the lower half-ring pipe 232, and the insulation cavity 22. This connection allows the insulation medium to smoothly enter the insulation cavity 22 from the ring pipe 23 and flow from the insulation cavity 22 to the outlet channel 272 for discharge, ensuring stable flow of the insulation medium and preventing excessive accumulation of the insulation medium in the insulation cavity 22, which would affect the insulation effect.

[0041] In some embodiments, the upper half-ring pipe 231 and the lower half-ring pipe 232 have a first connection position 28 and a second connection position 29. The inlet pipe channel 262 is aligned with the first connection position 28, and the outlet pipe channel 272 is aligned with the second connection position 29. The arrangement of the first connection position 28 and the second connection position 29 can ensure the accurate connection of the insulation inlet pipe 26 and the insulation outlet pipe 27 with the ring pipe 23, and at the same time facilitate the connection of the insulation inlet pipe 26 and the insulation outlet pipe 27, reducing connection costs.

[0042] In some embodiments, the insulation inlet pipe 26 and the insulation outlet pipe 27 are located on opposite sides of a first direction, which is one of the radial directions of the flow channel 11. The insulation inlet pipe 26 and the insulation outlet pipe 27 are located on opposite sides of the jacket 21, which facilitates the delivery and recovery of the insulation medium, while avoiding mutual interference between the insulation inlet pipe 26 and the insulation outlet pipe 27, thereby improving the operating efficiency of the insulation system.

[0043] It is known that the upper half-ring pipe 231 and the lower half-ring pipe 232 can have the same size. That is to say, the upper half-ring pipe 231 and the lower half-ring pipe 232 are symmetrically arranged. Their axis of symmetry can be any radial direction of the flow channel 11. In this embodiment, for ease of understanding and description, the axis of symmetry of the upper half-ring pipe 231 and the lower half-ring pipe 232 in the attached figure of this embodiment is in the horizontal direction. In some application scenarios, the axis of symmetry can also be inclined upward or inclined downward, etc.

[0044] Of course, the dimensions of the upper half-ring tube 231 and the lower half-ring tube 232 can also be different. That is to say, the included angle formed between the two ends of the upper half-ring tube 231 and the included angle formed between the two ends of the lower half-ring tube 232 are different, so as to meet the usage requirements in different scenarios.

[0045] In this embodiment, the upper half-ring tube 231 and the lower half-ring tube 232 are of the same size, and the axis of symmetry of the half-ring tube 231 and the lower half-ring tube 232 is horizontal, which is used as an example for demonstration.

[0046] like Figures 1 to 5 As shown, in some embodiments, a rotating structure 4 is also included. The rotating structure 4 is disposed on the valve body 1, and a valve stem 5 is connected to the rotating end of the rotating structure 4. The valve stem 5 is connected to the butterfly plate 3, and the rotation axis of the valve stem 5 is perpendicular to the first direction. The rotating structure 4 drives the valve stem 5 to rotate. The butterfly plate 3 is connected to the valve stem 5, and the rotation of the valve stem 5 drives the butterfly plate 3 to rotate synchronously. This enables the flexible rotation of the butterfly plate 3, thereby realizing the normal opening and closing operation of the butterfly valve and meeting the requirements of fluid on / off control. The rotating structure 4 can be any component that can drive the valve stem 5 to rotate, such as a rotary cylinder, a motor, etc., or it can adopt the corresponding structure in existing butterfly valves. This embodiment will not be described in detail here.

[0047] Optionally, a protective cover 6 is provided on the butterfly plate 3, which covers the outer periphery of the valve stem 5. The protective cover 6 can protect the valve stem 5 from the influence of the external environment, such as dust and impurities, extend the service life of the valve stem 5, and at the same time prevent unnecessary friction between the valve stem 5 and the butterfly plate 3 during rotation, ensuring the normal operation of the butterfly valve.

[0048] In some embodiments, a first mounting component 7 and a second mounting component 8 are respectively provided at both ends of the valve body 1. The first mounting component 7 and the second mounting component 8 facilitate the connection of the butterfly valve with other pipelines or equipment, improving the installation convenience and applicability of the butterfly valve, enabling it to better integrate into various pipeline systems and achieve fluid control functions. The first mounting component 7 and the second mounting component 8 can be any of the following: flange connection, welded connection, threaded connection, clamp connection, or quick-connect fitting. Of course, the first mounting component 7 and the second mounting component 8 can have the same structure or different structures. In this embodiment, both the first mounting component 7 and the second mounting component 8 are flange connections, which have high strength and good sealing performance. By providing flanges at both ends of the valve body 1, the butterfly valve can be easily connected to other flanges in the pipeline system, achieving quick installation and reliable connection. The flange connection can further enhance the sealing effect with bolts and gaskets to prevent fluid leakage.

[0049] In some embodiments, a third mounting member 9 is provided at the end of the insulated inlet pipe 26, and a fourth mounting member 10 is provided at the end of the insulated outlet pipe 27. The third mounting member 9 and the fourth mounting member 10 ensure that the insulation medium can safely and reliably enter and exit the insulation cavity 22, while facilitating connection to external piping systems. The third mounting member 9 and the fourth mounting member 10 can be any of the following: flange connection, welded connection, threaded connection, clamp connection, or quick-connect fitting. Of course, the third mounting member 9 and the fourth mounting member 10 can have the same structure or different structures. In this embodiment, both the third mounting member 9 and the fourth mounting member 10 are flange connections, which have high strength and good sealing performance. By providing flanges at both ends of the valve body 1, the butterfly valve can be easily connected to other flanges in the piping system, achieving quick installation and reliable connection. The flange connection can further enhance the sealing effect with bolts and gaskets to prevent fluid leakage.

[0050] In summary, this application provides a jacketed insulated butterfly valve. The insulated medium flows through the ring pipe 23 of the jacketed insulated butterfly valve. The upper ring pipe 231 is located within the upper cavity 221, and the lower ring pipe 232 is located within the lower cavity 222. The insulated medium in both the upper and lower ring pipes 231 and 232 can flow through the corresponding flow holes 24 to the insulation cavity 22, thus enabling the flow of the insulated medium within the insulation cavity 22. This ensures both insulation of the butterfly plate 3 and uniformity of insulation, thereby continuously providing heat to the medium inside the flow channel 11, maintaining the medium within a certain temperature range, preventing the medium from solidifying or crystallizing due to temperature drop, and ensuring the normal operation of the pipeline system.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A jacketed insulated butterfly valve, characterized in that, The valve body (1) includes a valve body (1) and a heat insulation structure (2). A flow channel (11) is provided through the middle of the valve body (1). A butterfly plate (3) is rotatably arranged in the flow channel (11). The heat insulation structure (2) includes: A jacket (21) is fitted around the outer periphery of the valve body (1), and a heat-insulating cavity (22) is formed between the jacket (21) and the valve body (1). The heat-insulating cavity (22) includes an upper half-cavity (221) and a lower half-cavity (222) that are connected to each other. The ring pipe (23) includes an upper ring pipe (231) and a lower ring pipe (232). The upper ring pipe (231) is located in the upper cavity (221), and the lower ring pipe (232) is located in the lower cavity (222). Both the upper ring pipe (231) and the lower ring pipe (232) have flow holes (24) on the side facing the flow channel (11). Multiple flow holes (24) are arranged circumferentially in the ring pipe (23), and the flow holes (24) are connected to the heat preservation cavity (22).

2. The jacketed insulated butterfly valve as described in claim 1, characterized in that: A flared part (25) is provided on the flow hole (24).

3. The jacketed insulated butterfly valve as described in claim 1, characterized in that: The insulation structure (2) further includes an insulation inlet pipe (26) and an insulation outlet pipe (27) disposed on the jacket (21). The insulation inlet pipe (26) connects the upper half ring pipe (231) and the lower half ring pipe (232), and the insulation outlet pipe (27) connects the upper half ring pipe (231) and the lower half ring pipe (232).

4. The jacketed insulated butterfly valve as described in claim 3, characterized in that: The heat-insulating inlet pipe (26) includes an inlet pipe body (261), an inlet pipe channel (262) is provided through the inlet pipe body (261), an inlet pipe partition (263) is provided in the inlet pipe channel (262), and the inlet pipe partition (263) divides the inlet pipe channel (262) into a first channel (2621) and a second channel (2622). The first channel (2621) is connected to the upper half ring pipe (231), and the second channel (2622) is connected to the lower half ring pipe (232).

5. The jacketed insulated butterfly valve as described in claim 4, characterized in that: The heat-insulating outlet pipe (27) includes an outlet pipe body (271), and an outlet pipe channel (272) is provided through the outlet pipe body (271). The outlet pipe channel (272) is connected to the upper half ring pipe (231), the lower half ring pipe (232) and the heat-insulating cavity (22).

6. The jacketed insulated butterfly valve as described in claim 5, characterized in that: The upper half-ring pipe (231) and the lower half-ring pipe (232) have a first connection position (28) and a second connection position (29), the inlet pipe channel (262) is aligned with the first connection position (28), and the outlet pipe channel (272) is aligned with the second connection position (29).

7. The jacketed insulated butterfly valve as described in claim 3, characterized in that: The heat-insulating inlet pipe (26) and the heat-insulating outlet pipe (27) are located on both sides of a first direction, which is one of the radial directions of the flow channel (11).

8. The jacketed insulated butterfly valve as described in claim 7, characterized in that: It also includes a rotating structure (4), which is disposed on the valve body (1). The rotating end of the rotating structure (4) is connected to a valve stem (5), which is connected to the butterfly plate (3). The rotation axis of the valve stem (5) is perpendicular to the first direction.

9. The jacketed insulated butterfly valve as described in claim 8, characterized in that: A protective cover (6) is provided on the butterfly plate (3), and the protective cover (6) covers the outer periphery of the valve stem (5).

10. The jacketed insulated butterfly valve as described in claim 1, characterized in that: The valve body (1) is provided with a first mounting component (7) and a second mounting component (8) at both ends.

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