Split heat preservation jacket hard sealing fixed ball valve

Abstract

The utility model relates to a split heat preservation jacket hard sealing fixed ball valve which comprises a valve body, valve covers are installed on the two sides of the valve body, a ball body is arranged in the valve body, a valve body jacket is fixedly installed on the valve body, valve cover jackets are fixedly installed on the valve covers, a round through hole is formed in the valve body jacket, and a through hole is formed in the round through hole. A round through hole is formed in the valve body, a gland flange and a valve rod are plugged into the round through hole, the gland flange is fixedly connected with the valve body, and the valve rod is inserted into the valve body and connected with the ball body. According to the ball valve, the corresponding clamping sleeve is welded when the valve body and the valve cover are not assembled, and the deformed part is machined off after welding is completed, so that the influence of welding deformation is completely eliminated, the influence of high temperature on part deformation of the valve body and the valve cover during clamping sleeve welding is eliminated, the sealing performance of the valve is greatly guaranteed, and the service life of the valve is prolonged. Meanwhile, in order to enable the valve body and the valve cover welded with the clamping sleeve not to influence assembly, a groove is reserved in the clamping sleeve, so that all parts can be smoothly assembled without interference.

Description

Technical Field

[0001] The utility model relates to the field of ball valve manufacturing, in particular to a split insulation jacket hard-sealed fixed ball valve. Background Art

[0002] The insulation jacket ball valve is a ball valve with a metal jacket welded on it. A heat preservation channel is formed between the jacket and the valve body. Steam or other heat preservation media is injected into the channel to ensure that the medium in the valve can work normally. It has good heat preservation properties and can effectively reduce the heat loss of the medium in the pipeline. However, most existing insulation jacket ball valves are integral jackets. When welding the jacket, the high temperature will damage the valve seal or cause the valve welding to deform, affecting the valve function. Utility Model Content

[0003] The utility model aims to provide a split insulation jacket hard seal fixed ball valve, which eliminates the influence of welding deformation and greatly ensures the sealing performance of the valve.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a split insulation jacket hard seal fixed ball valve, including a valve body, valve covers are installed on both sides of the valve body, a ball is arranged inside the valve body, a valve body jacket is fixedly installed on the valve body, a valve cover jacket is fixedly installed on the valve cover, a circular through hole is opened on the valve body jacket, a gland flange and a valve stem are inserted in the circular through hole, the gland flange is fixedly connected to the valve body, and the valve stem is inserted into the valve body and connected to the ball.

[0005] Furthermore, a double-piston sealing valve seat is installed in the valve cover.

[0006] Furthermore, the valve body jacket is fixed to the valve body by welding.

[0007] Furthermore, the valve body jacket comprises two semicircular valve body jacket sheets.

[0008] Furthermore, the valve cover jacket comprises two semicircular valve cover jacket sheets.

[0009] Furthermore, the valve cover jacket is fixed on the valve cover by welding.

[0010] Furthermore, the valve cover and the valve body are fixedly connected by bolts.

[0011] Furthermore, the gland flange is fixedly connected to the valve body by bolts.

[0012] The utility model provides a split insulation jacket hard seal fixed ball valve, which has the advantages of:

[0013] The ball valve described in the present application is welded with the corresponding jacket before the valve body and valve cover are assembled. The deformed part is processed away after welding, thereby completely eliminating the influence of welding deformation and the influence of high temperature on the deformation of the valve body and valve cover parts during welding of the jacket, thereby greatly ensuring the sealing performance of the valve. At the same time, in order to ensure that the valve body and valve cover with the jacket welded do not affect the assembly, a groove is left on the jacket so that the various parts can be assembled smoothly without interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0015] Figure 1 It is a structural schematic diagram of the ball valve of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the valve body jacket of the utility model.

[0017] Figure 3 It is a cross-sectional view of the ball valve of the utility model.

[0018] In the figure: 1. valve body; 2. valve body jacket; 3. valve cover; 4. valve cover jacket; 5. gland flange; 6. valve stem; 7. double piston hard seal valve seat; 8. ball; 9. support plate; 10. semicircular valve body jacket piece; 11. semicircular through hole; 12. valve body locating edge; 13. valve cover locating edge. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0020] Combination Figure 1-3 The present application provides a split insulation jacket hard seal fixed ball valve, comprising a valve body 1, a valve cover 3 is installed on each side of the valve body 1, and the valve cover 3 is fixedly arranged on both sides of the valve body 1 by bolts. At the same time, a ball 8 and a support plate 9 are arranged inside the valve body 1.

[0021] In this embodiment, a valve body jacket 2 is fixedly mounted on the valve body 1, and a corresponding valve body water pipe through hole is opened on the valve body jacket 2.

[0022] A valve cover jacket 4 is fixedly mounted on each valve cover 3 , and a corresponding valve cover water pipe through hole is formed on the valve cover jacket 4 .

[0023] The valve body jacket 2 and the valve cover jacket 4 do not contact each other. Specifically, the valve body jacket 2 is fixed to the valve body 1 by welding, and the valve cover jacket 4 is fixed to the valve cover 3 by welding.

[0024] At the same time, two valve body positioning plates 12 protruding from the surface of the valve body 1 are symmetrically arranged on the surface of the valve body 1 , and the valve body jacket 2 is fixedly installed between the two valve body positioning plates 12 , thereby facilitating the installation of the valve body jacket 2 .

[0025] Similarly, two valve cover positioning plates 13 protruding from the surface of the valve cover 3 are symmetrically arranged on the surface of the valve cover 3 , and the valve cover jacket 4 is fixedly installed between the two valve cover positioning plates 13 , thereby facilitating the installation of the valve cover jacket 4 .

[0026] Among them, the valve body jacket 2 includes two semicircular valve body jacket pieces, which are firstly sleeved on the outer surface of the valve body 1 and then welded together with the valve body 1, so as to be fixedly installed on the valve body 1; at the same time, the valve cover jacket 4 includes two semicircular valve cover jacket pieces, which are firstly sleeved on the outer surface of the valve cover 3 and then welded together with the valve sleeve, so as to be fixedly installed on the valve cover 3.

[0027] In this embodiment, the two semicircular valve body jacket sheets have the same size, and the two semicircular valve cover jacket sheets also have the same size. A semicircular through hole 11 is opened on one end of the semicircular valve body jacket sheet, and a circular through hole is formed through the two semicircular through holes 11. The connecting hole on the valve body is leaked through the circular through hole, and is connected to the gland flange 5 through the connecting hole. A valve stem 6 is inserted into the gland flange 5, and the valve stem 6 extends into the valve body 1 and is connected to the ball 8.

[0028] At the same time, a sealing valve seat is installed in the valve cover 3, and the sealing valve seat is a double-piston hard sealing valve seat 7.

[0029] During the specific installation, the two semicircular valve body jacket pieces are first put on the outer surface of the valve body and then welded with the valve body, so that the valve body jacket is fixedly installed on the valve body, and the two semicircular valve cover jacket pieces are first put on the outer surface of the valve cover and then welded with the valve sleeve, so that they are fixedly installed on the valve cover. The double piston hard seal valve seat 7 is installed in the valve cover 3, and then the ball 8 and the support plate 9 are installed in the valve body 1. The valve body 1 and the two valve covers 3 are connected together by stud nuts. Finally, the gland flange 5 is connected to the valve body, and the valve stem 6 is installed in the valve body 1 to form a complete ball valve.

[0030] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A split insulation jacket hard seal fixed ball valve, characterized by: It includes a valve body, valve covers are installed on both sides of the valve body, a ball is arranged inside the valve body, a valve body jacket is fixedly installed on the valve body, a valve cover jacket is fixedly installed on the valve cover, a circular through hole is opened on the valve body jacket, a gland flange and a valve stem are inserted in the circular through hole, the gland flange is fixedly connected to the valve body, and the valve stem is inserted into the valve body and connected to the ball.

2. According to claim 1, a split insulation jacket hard seal fixed ball valve is characterized by: A double-piston sealing valve seat is installed in the valve cover.

3. A split insulation jacket hard seal fixed ball valve according to claim 1, characterized in that: The valve body jacket is fixed on the valve body by welding.

4. A split insulation jacket hard seal fixed ball valve according to claim 1, characterized in that: The valve body jacket comprises two semicircular valve body jacket sheets.

5. The split insulation jacket hard seal fixed ball valve according to claim 1, characterized in that: The valve cover jacket comprises two semicircular valve cover jacket sheets.

6. A split insulation jacket hard seal fixed ball valve according to claim 1, characterized in that: The valve cover jacket is fixed on the valve cover by welding.

7. The split insulation jacket hard seal fixed ball valve according to claim 1, characterized in that: The valve cover and the valve body are fixedly connected by bolts.

8. The split insulation jacket hard seal fixed ball valve according to claim 1, characterized in that: The gland flange is fixedly connected to the valve body by bolts.

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