Heat preservation jacket ball valve

Abstract

The utility model discloses a heat preservation jacket ball valve which comprises a valve body. The ball body is rotatably arranged in the valve body; the valve rod is arranged on the upper portion of the valve body, one end of the valve rod is connected with the ball, the other end of the valve rod extends out of the valve body, and the valve rod rotates to drive the ball to rotate. The heat preservation jacket is arranged outside the valve body in a sleeving manner and is used for preserving heat of the valve body; an annular groove is formed in the position, close to the joint of the valve rod and the ball, of the valve body, a carbon ring is arranged in the annular groove, the upper end and the lower end of the carbon ring abut against the valve body and the valve rod respectively, padding is further arranged between the valve body and the valve rod, and the carbon ring and the padding position and guide the valve rod. The valve torque stability can be guaranteed, meanwhile, it is guaranteed that a medium in the valve is not affected by the external environment temperature of the valve, and the heat preservation effect is good; the valve rod can be prevented from being blown out under medium pressure, and the safety of the valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a heat-insulating jacketed ball valve. Background Art

[0002] With the rapid development of industries such as petroleum and chemical industry, the demand for valves has gradually increased. In these industries, it is often necessary to transport some easy-to-solidify and easy-to-crystallize media through pipelines. In order to ensure the fluidity of the media during the transportation process, the media is required to maintain a certain temperature field during the transportation process. In order to meet this situation in the future, all valves are required to have good thermal insulation effects and long service life.

[0003] In the prior art, the valve stem is positioned and guided only by packing. If the packing height is too low, the valve stem will not be stable enough when rotating, and the valve stem will contact the valve body, pulling the valve stem, causing the valve torque to increase abnormally and shortening the valve service life; if the packing height is too high, although the valve stem stability is improved, the friction torque generated by the packing will increase, thereby increasing the valve torque, and at the same time the valve medium will be affected by the external ambient temperature, resulting in unsatisfactory valve insulation effect. Summary of the invention

[0004] According to an embodiment of the utility model, a heat-insulating jacketed ball valve is provided, comprising:

[0005] Valve body;

[0006] A ball, the ball being rotatably disposed in the valve body;

[0007] The valve stem is arranged on the upper part of the valve body, one end of the valve stem is connected to the ball, and the other end extends out of the valve body. The rotation of the valve stem drives the ball to rotate;

[0008] A heat-insulating jacket, which is arranged outside the valve body to insulate the valve body;

[0009] An annular groove is provided at the connection between the valve stem and the ball of the valve body, and a carbon ring is provided in the annular groove. The upper and lower ends of the carbon ring are respectively in contact with the valve body and the valve stem. A packing is also provided between the valve body and the valve stem. The carbon ring and the packing position and guide the valve stem.

[0010] Further, the filler and the insulation jacket are located at the same height.

[0011] Furthermore, it also includes: a compression sleeve, which is arranged on the valve stem, one end of the compression sleeve is in contact with the packing, and the other end of the compression sleeve extends out of the valve body, and a pressure plate is provided, which is fixedly connected to the outer surface of the valve body.

[0012] Furthermore, a valve seat is arranged between the ball and the valve body, and a disc spring, a valve seat pressure ring and a valve seat graphite ring are arranged in sequence from the inside to the outside between the valve seat and the valve body.

[0013] Furthermore, it also includes: a disassembly interface, which is arranged on one side of the valve body and is threadedly connected to the valve body.

[0014] Furthermore, a winding gasket and a sealing gasket are provided between the disassembly and assembly interface and the valve body. The winding gasket and the sealing gasket are relatively arranged at two ends of the disassembly and assembly interface, and the sealing gasket is close to the outer side of the valve body.

[0015] Furthermore, a hexagonal groove is provided on the disassembly and assembly interface, and the hexagonal groove is adapted to the external nut.

[0016] The insulation jacketed ball valve according to the embodiment of the utility model can ensure the stability of the valve torque while ensuring that the medium inside the valve will not be affected by the external ambient temperature of the valve, and has a good insulation effect; it can prevent the valve stem from being blown out under the medium pressure, thereby ensuring the safety of the valve.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of a heat-insulating jacketed ball valve according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0021] Figure 4 It is a schematic diagram of the disassembly and assembly interface of the insulation jacketed ball valve according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0023] First, combine Figures 1 to 4 The insulation jacketed ball valve according to the embodiment of the utility model is described, which is used to improve the insulation effect of the valve and has a wide range of application scenarios.

[0024] like Figures 1 to 4 As shown, the insulation jacket ball valve of the embodiment of the utility model comprises: a valve body 1; a ball 2, a valve stem 3 and an insulation jacket 4.

[0025] Specifically, Figures 1 to 4As shown, in this embodiment, the ball 2 is rotatably arranged in the valve body 1; the valve stem 3 is arranged on the upper part of the valve body 1, one end of the valve stem 3 is connected to the ball 2, and the other end extends out of the valve body 1, and the rotation of the valve stem 3 drives the ball 2 to rotate; the insulation jacket 4 is sleeved on the outside of the valve body 1, and the insulation valve body 1 effectively reduces the heat loss and ensures the temperature stability of the medium when it flows inside the valve; the valve body 1 is provided with an annular groove near the connection between the valve stem 3 and the ball 2, and a carbon ring 31 is arranged in the annular groove, and the carbon ring 31 has good wear resistance and corrosion resistance, and the upper and lower ends of the carbon ring 31 They are respectively in contact with the valve body 1 and the valve stem 3. A packing 32 is also provided between the valve body 1 and the valve stem 3. The carbon ring 31 and the packing 32 position and guide the valve stem 3. In this embodiment, by setting the annular groove and the carbon ring 31, since the lower end of the carbon ring 31 is in contact with the valve stem 3, while positioning the valve stem 3, the valve stem 3 is ensured not to be blown out under the medium pressure, thereby ensuring the safety of the valve; through the two-point positioning and guiding of the carbon ring 31 and the packing 32, it is ensured that the valve stem 3 will not be excessively tilted, so that the valve stem 3 rotates more smoothly, the valve torque is stable, and the service life of the valve is extended. Furthermore, the packing 32 and the insulation jacket 4 are located at the same height, ensuring that the packing 32 is within the protection range of the insulation jacket 4, thereby effectively reducing heat loss, maintaining the temperature of the medium inside the valve stable, avoiding changes in the medium properties or fluid flow characteristics caused by temperature changes, and ensuring that the valve works for a long time.

[0026] Further, if Figures 1 to 3 As shown, in this embodiment, it also includes: a pressing sleeve 5, which is sleeved on the valve stem 3, one end of the pressing sleeve 5 is in contact with the packing 32, and the other end of the pressing sleeve 5 extends out of the valve body 1, and is provided with a pressing plate 51, and the pressing plate 51 is fixedly connected to the outer surface of the valve body 1 by bolts. Through the setting of the pressing sleeve 5, the packing 32 can be tightly clamped between the valve stem 3 and the valve body 1, ensuring that the packing 32 is in a stable position, making the structure between the valve stem 3 and the valve body 1 more stable, and preventing the intrusion of external media.

[0027] Further, if Figures 1 to 3 As shown, in this embodiment, a valve seat 6 is provided between the ball 2 and the valve body 1, and a disc spring 61, a valve seat pressure ring 62 and a valve seat graphite ring 63 are provided between the valve seat 6 and the valve body 1 from the inside to the outside. The valve seat graphite ring 63 can provide a good sealing effect and maintain a stable sealing performance even under high temperature or high pressure. The arrangement of the disc spring 61 and the valve seat pressure ring 62 can ensure that the valve seat graphite ring 63 is tightly clamped between the valve seat 6 and the valve body 1, thereby effectively preventing medium leakage and improving the sealing performance of the valve; the arrangement of the disc spring 61 and the valve seat pressure ring 62 can reduce the friction and wear of the valve seat 6 during the operation of the valve and extend the service life of the valve seat 6.

[0028] Further, if Figures 1 to 4As shown, in this embodiment, it also includes: a disassembly interface 7, which is arranged on one side of the valve body 1 and is threadedly connected to the valve body 1. The disassembly interface 7 is detachable and separable, which is convenient for the installation, disassembly and maintenance of structures such as the ball 2 and the valve seat 6. In this embodiment, a winding gasket 71 and a sealing gasket 72 are arranged between the disassembly interface 7 and the valve body 1, and double sealing ensures that the valve will not leak. The winding gasket 71 and the sealing gasket 72 are relatively arranged at the two ends of the disassembly interface 7. The sealing gasket 72 is close to the outside of the valve body 1, that is, the winding gasket 71 is arranged at the front end of the threaded connection between the disassembly interface 7 and the valve body 1, and the sealing gasket 72 is arranged at the rear end to block the medium from contacting the thread, effectively protect the thread, facilitate the later disassembly and maintenance of the valve, extend the service life of the valve, and reduce the maintenance cost.

[0029] Further, if Figure 4 As shown, in this embodiment, a hexagonal groove 73 is provided on the disassembly and assembly interface 7, and the hexagonal groove 73 is adapted to the external nut. When the disassembly and assembly interface 7 needs to be threadedly connected with the valve body 1, no specific screwing tool is required, and only an ordinary nut is needed to achieve the installation of the disassembly and assembly interface 7, which is convenient and quick.

[0030] Above, refer to Figures 1 to 4 The invention describes an insulated jacketed ball valve according to an embodiment of the utility model, which can ensure the stability of the valve torque while ensuring that the medium inside the valve will not be affected by the external ambient temperature of the valve, and has a good insulation effect; it can prevent the valve stem from being blown out under the medium pressure, thereby ensuring the safety of the valve.

[0031] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A thermal insulation jacketed ball valve, characterized in that: Include: Valve body; a ball, the ball being rotatably disposed in the valve body; A valve stem, wherein the valve stem is arranged on the upper part of the valve body, one end of the valve stem is connected to the ball, and the other end of the valve stem extends out of the valve body, and the rotation of the valve stem drives the ball to rotate; A heat-insulating jacket, the heat-insulating jacket is arranged outside the valve body to insulate the valve body; The valve body is provided with an annular groove near the connection between the valve stem and the sphere, a carbon ring is provided in the annular groove, the upper and lower ends of the carbon ring are respectively in contact with the valve body and the valve stem, a packing is also provided between the valve body and the valve stem, and the carbon ring and the packing position and guide the valve stem.

2. The insulation jacketed ball valve according to claim 1, characterized in that: The filler and the insulation jacket are located at the same height.

3. The insulation jacketed ball valve according to claim 1, characterized in that: It also includes: a compression sleeve, which is sleeved on the valve stem, one end of the compression sleeve abuts against the packing, the other end of the compression sleeve extends out of the valve body, and is provided with a compression plate, which is fixedly connected to the outer surface of the valve body.

4. The insulation jacketed ball valve according to claim 1, characterized in that: A valve seat is arranged between the ball and the valve body, and a disc spring, a valve seat pressure ring and a valve seat graphite ring are arranged in sequence from the inside to the outside between the valve seat and the valve body.

5. The insulation jacketed ball valve according to claim 1, characterized in that: It also includes: a disassembly interface, which is arranged on one side of the valve body and is threadedly connected to the valve body.

6. The insulation jacketed ball valve according to claim 5, characterized in that: A winding gasket and a sealing gasket are provided between the disassembly and assembly interface and the valve body. The winding gasket and the sealing gasket are relatively arranged at two ends of the disassembly and assembly interface, and the sealing gasket is close to the outer side of the valve body.

7. The insulating jacketed ball valve according to claim 5 or 6, characterized in that: The disassembly and assembly interface is provided with a hexagonal groove, and the hexagonal groove is matched with the external nut.

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