Eccentric heat tracing valve

Abstract

The utility model discloses an eccentric heat tracing valve which comprises a valve body, a valve plate and a valve rod, the valve rod is arranged on the valve body in a rotating mode, the valve plate is arranged on the valve rod, the valve plate is located in the valve body, the eccentric heat tracing valve further comprises a heat preservation jacket and a jacket flange pipe, the protection jacket is matched with the valve body, and the jacket flange pipe is connected with the heat preservation jacket. A heat preservation cavity is formed between the heat preservation jacket and the valve body, the jacket flange pipe is arranged on the heat preservation jacket, and the jacket flange pipe is communicated with the heat preservation cavity. The valve has the following beneficial effects that the jacket flange pipe is adopted, so that the valve can be conveniently connected with other pipelines, and the sealing performance after connection is better.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to an eccentric heat tracing valve. Background Technology

[0002] In the petrochemical field, jacketed valves are widely used in applications where the freezing point is high or high viscosity fluids need to be maintained. In order to transport high viscosity fluids, patent publication document CN201103704Y discloses a jacketed valve. The jacketed valve shown in this structure has a circular pipe set at the edge of the jacket. When in use, steam can be introduced into the jacket through the circular pipe. Because this jacketed valve uses a circular pipe, it is not easy to connect and fix it with other pipes, and the connection is prone to leakage. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes an eccentric heat tracing valve that employs a jacketed flange pipe, which not only facilitates connection with other pipelines but also provides better sealing after connection.

[0004] The technical solution adopted by this utility model is as follows:

[0005] An eccentric heat tracing valve includes a valve body, a valve plate, and a valve stem. The valve stem is rotatably mounted on the valve body, and the valve plate is mounted on the valve stem. The valve plate is located within the valve body. The valve body also includes an insulation jacket and a jacket flange. The insulation jacket is fitted together with the valve body, and an insulation cavity is formed between the insulation jacket and the valve body. The jacket flange is mounted on the insulation jacket and is in communication with the insulation cavity.

[0006] In this type of eccentric heat tracing valve, a jacketed flange is installed on the insulation jacket. The jacketed flange can be used to connect with other pipelines that provide heat medium (including but not limited to steam or hot water). Due to the use of the jacketed flange, it is not only easy to connect with other pipelines, but also the sealing performance is better after connection.

[0007] Optionally, it may also include a valve seat, which is detachably mounted on the valve body.

[0008] The valve seat is specifically an L-shaped valve seat, and the entire valve seat has good resistance to deformation.

[0009] Optionally, a seat gasket is provided between the valve seat and the valve body.

[0010] The purpose of the seat cushion is to provide a seal.

[0011] Optionally, a metal sealing ring may also be included, which is fitted together with the valve plate via a retaining ring.

[0012] The function of a metal sealing ring is to provide a seal.

[0013] Optionally, a sealing gasket is provided between the metal sealing ring and the valve plate, and a sealing gasket is provided between the retaining ring and the metal sealing ring.

[0014] Optionally, one end of the valve body is provided with an extended valve neck.

[0015] Optionally, it also includes a thrust bearing, a graphite pad, a bushing, and a spacer. The thrust bearing is disposed at the boss of the valve body, the graphite pad is disposed between the valve body and the valve stem, the bushing is disposed between the valve body and the valve stem, the spacer is disposed between the valve body and the valve stem, the spacer abuts against the extended valve neck, the bushing is disposed between the spacer and the thrust bearing, and the graphite pad is disposed between the bushing and the thrust bearing.

[0016] The valve body and valve stem are fitted with a thrust bearing, graphite gasket, bushing, and spacer, and these components are kept in close contact to ensure a tight seal.

[0017] Optionally, a bracket is provided at one end of the extended valve neck, and an actuator is provided at the other end of the bracket. The actuator is engaged with the valve stem.

[0018] Specifically, a packing material is installed between the extended valve neck and the valve stem for sealing.

[0019] Optionally, a base plate is provided at one end of the valve body, and a drain port is provided at one end of the valve body.

[0020] The purpose of the drain outlet is to be opened and drained when needed. Under normal use, the drain outlet is sealed with fasteners such as screws.

[0021] Optionally, the valve plate and the valve body are fitted together by threaded pins.

[0022] The beneficial effects of this utility model are: the use of a jacketed flange pipe not only facilitates connection with other pipes, but also improves the sealing performance after connection. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a simplified structural diagram of an eccentric heat tracing valve;

[0025] Figure 2 This is a simplified diagram illustrating the fit between the valve plate and the valve stem.

[0026] Figure 3 This is a simplified diagram illustrating the fit between the valve stem and the valve body.

[0027] Figure 4 This is a schematic diagram showing the fit between the insulation jacket and the jacket flange pipe;

[0028] Figure 5 This is a schematic diagram showing the positional relationship between the valve seat and the retaining ring.

[0029] The figures are labeled as follows: 1. Valve body; 2. Valve plate; 3. Valve stem; 4. Valve seat; 5. Metal sealing ring; 6. Retaining ring; 7. Base plate; 8. Insulation jacket; 9. Jacket flange pipe; 10. Bushing; 11. Extended valve neck; 12. Bracket; 13. Actuator; 14. Sealing ring gasket; 15. Thrust bearing; 16. Graphite gasket; 17. Spacer; 18. Threaded pin; 19. Packing; 20. Drain port; 21. Seat gasket. Detailed Implementation

[0030] 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.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention 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 the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] As attached Figure 1 ~Appendix Figure 5As shown, an eccentric heat tracing valve includes a valve body 1, a valve plate 2, and a valve stem 3. The valve stem 3 is rotatably mounted on the valve body 1, and the valve plate 2 is mounted on the valve stem 3. The valve plate 2 is located inside the valve body 1. The valve body 1 also includes an insulation jacket 8 and a jacket flange pipe 9. The insulation jacket is fitted together with the valve body 1, and an insulation cavity is formed between the insulation jacket 8 and the valve body 1. The jacket flange pipe 9 is mounted on the insulation jacket 8, and the jacket flange pipe 9 is in communication with the insulation cavity.

[0034] In this type of eccentric heat tracing valve, a jacketed flange pipe 9 is provided on the insulation jacket 8. The jacketed flange pipe 9 can be used to connect with other pipelines that provide heat medium (including but not limited to steam or hot water). Due to the use of the jacketed flange pipe 9, it is not only easy to connect with other pipelines, but also the sealing performance is better after connection.

[0035] As attached Figure 1 ~Appendix Figure 5 As shown, it also includes a valve seat 4, which is detachably mounted on the valve body 1.

[0036] Specifically, valve seat 4 is an L-shaped valve seat 4, and the entire valve seat 4 has good resistance to deformation.

[0037] As attached Figure 1 ~Appendix Figure 5 As shown, a seat gasket 21 is provided between the valve seat 4 and the valve body 1.

[0038] The function of the seat pad 21 is to provide a seal.

[0039] As attached Figure 1 ~Appendix Figure 5 As shown, it also includes a metal sealing ring 5, which is fitted together with the valve plate 2 via a retaining ring 6.

[0040] The function of the metal sealing ring 5 is to provide a seal.

[0041] As attached Figure 1 ~Appendix Figure 5 As shown, a sealing gasket 14 is provided between the metal sealing ring 5 and the valve plate 2, and a sealing gasket 14 is provided between the retaining ring 6 and the metal sealing ring 5.

[0042] As attached Figure 1 ~Appendix Figure 5 As shown, an extended valve neck is provided at one end of the valve body 1.

[0043] As attached Figure 1 ~Appendix Figure 5As shown, it also includes a thrust bearing 15, a graphite pad 16, a bushing, and a spacer 17. The thrust bearing 15 is disposed at the boss of the valve body 1, the graphite pad 16 is disposed between the valve body 1 and the valve stem 3, the bushing is disposed between the valve body 1 and the valve stem 3, the spacer 17 is disposed between the valve body 1 and the valve stem 3, the spacer 17 abuts against the extended valve neck, the bushing is disposed between the spacer 17 and the thrust bearing 15, and the graphite pad 16 is disposed between the bushing and the thrust bearing 15.

[0044] The thrust bearing 15, graphite pad 16, bushing and spacer 17 are provided and are kept in close contact to ensure the sealing between the valve body 1 and the valve stem 3.

[0045] As attached Figure 1 ~Appendix Figure 5 As shown, a bracket 12 is provided at one end of the extended valve neck, and an actuator 13 is provided at one end of the bracket 12. The actuator is engaged with the valve stem 3.

[0046] Specifically, a packing 19 is provided between the extended valve neck and the valve stem 3, and the packing 19 is used for sealing.

[0047] As attached Figure 1 ~Appendix Figure 5 As shown, a base plate 7 is provided at one end of the valve body 1, and a drain port 20 is provided at the other end of the valve body 1.

[0048] The function of the drain port 20 is to be opened and drained when needed. Under normal use, the drain port 20 is closed with fasteners such as screws.

[0049] As attached Figure 1 ~Appendix Figure 5 As shown, the valve plate 2 and the valve body 1 are fitted together by a threaded pin 18.

[0050] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An eccentric heat tracing valve, comprising a valve body, a valve plate, and a valve stem, wherein the valve stem is rotatably mounted on the valve body, the valve plate is mounted on the valve stem, and the valve plate is located within the valve body, characterized in that, It also includes an insulation jacket and a jacket flange pipe. The insulation jacket is fitted together with the valve body, and an insulation cavity is formed between the insulation jacket and the valve body. The jacket flange pipe is disposed on the insulation jacket, and the jacket flange pipe is in communication with the insulation cavity.

2. The eccentric heat tracing valve according to claim 1, characterized in that, It also includes a valve seat, which is detachably mounted on the valve body.

3. An eccentric heat tracing valve according to claim 2, characterized in that, A seat pad is provided between the valve seat and the valve body.

4. An eccentric heat tracing valve according to claim 1, characterized in that, It also includes a metal sealing ring, which is fitted together with the valve plate via a retaining ring.

5. An eccentric heat tracing valve according to claim 4, characterized in that, A sealing gasket is provided between the metal sealing ring and the valve plate, and a sealing gasket is provided between the retaining ring and the metal sealing ring.

6. An eccentric heat tracing valve according to claim 1, characterized in that, An extended valve neck is provided at one end of the valve body.

7. An eccentric heat tracing valve according to claim 6, characterized in that, It also includes a thrust bearing, a graphite pad, a bushing, and a spacer. The thrust bearing is disposed at the boss of the valve body, the graphite pad is disposed between the valve body and the valve stem, the bushing is disposed between the valve body and the valve stem, the spacer is disposed between the valve body and the valve stem, the spacer abuts against the extended valve neck, the bushing is disposed between the spacer and the thrust bearing, and the graphite pad is disposed between the bushing and the thrust bearing.

8. An eccentric heat tracing valve according to claim 6, characterized in that, One end of the extended valve neck is provided with a bracket, and the other end of the bracket is provided with an actuator, which is engaged with the valve stem.

9. An eccentric heat tracing valve according to claim 1, characterized in that, A base plate is provided at one end of the valve body, and a drain port is provided at the other end of the valve body.

10. An eccentric heat tracing valve according to claim 1, characterized in that, The valve plate and the valve body are joined together by threaded pins.

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