High-temperature and high-pressure hard sealing ball valve

Abstract

The utility model discloses a high-temperature and high-pressure hard sealing ball valve which comprises a ball valve main valve body assembly, a ball valve auxiliary valve body assembly is fixedly arranged at one end of the ball valve main valve body assembly, a ball valve rod is rotatably arranged in the ball valve auxiliary valve body assembly in a penetrating mode, and a ball valve ball body is fixedly arranged at one end of the lower portion of the ball valve rod. The main valve body cambered surface hard sealing ring seat and the auxiliary valve body cambered surface hard sealing ring seat are attached to the outer side surface of the ball body of the ball valve, so that the foundation hard sealing effect is achieved; meanwhile, cambered surface metal sealing rings of a sealing assembly in the main valve body and a sealing assembly in the auxiliary valve body can be attached to the outer side surface of a ball body of the ball valve under extrusion of a disc-shaped metal spring to achieve a secondary elastic sealing effect, so that when the structure is used, a temporary sealing effect can be achieved when any one sealing structure is damaged, and the use safety is higher; and the pressure of the sealing surface can be automatically adjusted at high temperature through the arranged disc-shaped metal spring, and the material expansion difference is compensated.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve equipment technical field, specifically a kind of high temperature and high pressure hard sealing ball valve. BACKGROUND

[0002] High temperature and high pressure hard sealing ball valve is a kind of valve specially designed for fluid control under extreme conditions. It is usually used in high-pressure and high-temperature environment in the industrial fields such as petroleum, chemical industry, electric power, metallurgy, etc., to shut off or connect the medium in the process;

[0003] This kind of hard sealing ball valve is made of hard material, such as stainless steel, hard alloy or ceramic, to ensure good sealing performance and long service life under high temperature and high pressure working environment. However, the existing hard sealing ball valve is mostly single sealing structure, without multiple sealing effect. When the sealing structure is damaged, the sealing effect will be lost immediately, which is not safe and convenient to use. SUMMARY

[0004] The utility model aims at: in order to solve the problem that the existing hard sealing ball valve is mostly single sealing structure, without multiple sealing effect, and the sealing effect will be lost immediately when the sealing structure is damaged, which is not safe and convenient to use, provide a kind of high temperature and high pressure hard sealing ball valve.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of high temperature and high pressure hard sealing ball valve, comprising: ball valve main valve body assembly, the ball valve main valve body assembly one end is fixedly arranged with ball valve auxiliary valve body assembly, the ball valve auxiliary valve body assembly is rotationally provided with ball valve valve stem in the inside, the ball valve valve stem lower one end is fixedly arranged with ball valve ball, the ball valve main valve body assembly inside one end is embedded with main valve body inner sealing assembly, the ball valve auxiliary valve body assembly inside one end is embedded with auxiliary valve body inner sealing assembly, the ball valve ball is arranged in the inside of the ball valve main valve body assembly and ball valve auxiliary valve body assembly.

[0006] As a further scheme of the utility model: the ball valve main valve body assembly contains ball valve main valve body, the ball valve main valve body inside one end is provided with main valve body arc face hard sealing ring seat, the other end of the ball valve main valve body inside is provided with main valve body sealing element ring groove, the ball valve main valve body one end is fixedly arranged with valve body embedded ring, the ball valve main valve body side one end is fixedly arranged with main valve body connecting seat, the main valve body connecting seat is through and is provided with main valve body connecting through hole, the other end of the ball valve main valve body is through and is fixedly connected with main valve body mounting flange, the inside one end of the main valve body mounting flange is through and is provided with main valve body flange through hole.

[0007] As a further scheme of the utility model: the ball valve auxiliary valve body assembly contains a ball valve auxiliary valve body, the inside middle part of the ball valve auxiliary valve body is provided with an auxiliary valve body arc hard sealing ring seat, one end of the inside of the ball valve auxiliary valve body is provided with an auxiliary valve body sealing ring groove, the other end of the inside of the ball valve auxiliary valve body is provided with a valve body embedded ring groove, one end of the side of the ball valve auxiliary valve body is fixedly provided with an auxiliary valve body connecting seat, the inside of the auxiliary valve body connecting seat is provided with an auxiliary valve body connecting through hole, one end of the ball valve auxiliary valve body is fixedly connected with an auxiliary valve body mounting flange, and the inside one end of the auxiliary valve body mounting flange is provided with an auxiliary valve body flange through hole.

[0008] As a further scheme of the utility model: the main valve body inner sealing assembly contains an arc metal sealing ring, one end of the arc metal sealing ring is fixedly provided with a disc-shaped metal spring, the auxiliary valve body inner sealing assembly and the main valve body inner sealing assembly are the same in specification and model.

[0009] As a further scheme of the utility model: the main valve body connecting seat and the main valve body connecting through hole are provided with six groups, the main valve body flange through hole is provided with multiple groups, and the multiple main valve body flange through holes are evenly arranged in the inside of the main valve body mounting flange.

[0010] As a further scheme of the utility model: the auxiliary valve body connecting seat and the auxiliary valve body connecting through hole are provided with six groups, the auxiliary valve body flange through hole is provided with multiple groups, and the multiple auxiliary valve body flange through holes are evenly arranged in the inside of the auxiliary valve body mounting flange.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] In the utility model, the main valve body arc hard sealing ring seat and the auxiliary valve body arc hard sealing ring seat are attached to the outer side surface of the ball valve ball body, and the arc metal sealing ring of the main valve body inner sealing assembly and the auxiliary valve body inner sealing assembly is extruded by the disc-shaped metal spring and is attached to the outer side surface of the ball valve ball body, so that the structure can play a temporary sealing effect when any one of the sealing structures is damaged, and the use safety is higher. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic view of the high-temperature and high-pressure hard sealing ball valve.

[0014] Figure 2 It is the internal structure schematic view of the ball valve main valve body assembly in the high-temperature and high-pressure hard sealing ball valve.

[0015] Figure 3 is the internal structure schematic view of the ball valve auxiliary valve body assembly in the high temperature and high pressure hard sealing ball valve of the utility model;

[0016] Figure 4 is the cross section structure schematic view of the ball valve main valve body assembly in the high temperature and high pressure hard sealing ball valve of the utility model;

[0017] Figure 5 is the cross section structure schematic view of the ball valve auxiliary valve body assembly in the high temperature and high pressure hard sealing ball valve of the utility model;

[0018] Figure 6 is the structure schematic view of the main valve body inner sealing assembly in the high temperature and high pressure hard sealing ball valve of the utility model.

[0019] In the figure: 1, ball valve main valve body assembly;2, ball valve auxiliary valve body assembly;3, ball valve stem;4, ball valve ball;5, main valve body inner sealing assembly;6, auxiliary valve body inner sealing assembly;10, ball valve main valve body;11, main valve body arc surface hard sealing ring seat;12, main valve body sealing ring groove;13, valve body embedded ring;14, main valve body connecting seat;15, main valve body connecting through hole;16, main valve body mounting flange;17, main valve body flange through hole;20, ball valve auxiliary valve body;21, auxiliary valve body arc surface hard sealing ring seat;22, auxiliary valve body sealing ring groove;23, valve body embedded ring groove;24, auxiliary valve body connecting seat;25, auxiliary valve body connecting through hole;26, auxiliary valve body mounting flange;27, auxiliary valve body flange through hole;50, arc surface metal sealing ring;51, disc-shaped metal spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it is necessary to explain that, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "setting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the utility model.

[0022] Referring to Figures 1 to 3 In the utility model embodiment, a high temperature and high pressure hard sealing ball valve, comprising: ball valve main valve body assembly 1, ball valve main valve body assembly 1 one end is fixedly provided with ball valve auxiliary valve body assembly 2, ball valve auxiliary valve body assembly 2 is rotatably provided with ball valve stem 3 in the inside, ball valve stem 3 lower one end is fixedly provided with ball valve ball 4, ball valve main valve body assembly 1 inside one end is embedded with main valve body inner sealing assembly 5, ball valve auxiliary valve body assembly 2 inside one end is embedded with auxiliary valve body inner sealing assembly 6, ball valve ball 4 is located in the inside of ball valve main valve body assembly 1 and ball valve auxiliary valve body assembly 2 is provided.

[0023] Referring to Figure 4 Ball valve main valve body assembly 1 contains ball valve main valve body 10, one end of ball valve main valve body 10 is provided with main valve body arc face hard sealing ring seat 11 in the inside, the other end of ball valve main valve body 10 is provided with main valve body sealing element ring groove 12 in the inside, one end of ball valve main valve body 10 is fixedly provided with valve body embedded ring 13, one end of ball valve main valve body 10 is fixedly provided with main valve body connecting seat 14 on the side, main valve body connecting through hole 15 is formed in the inside of main valve body connecting seat 14, main valve body mounting flange 16 is fixedly connected to the other end of ball valve main valve body 10, main valve body flange through hole 17 is formed in the inside of main valve body mounting flange 16, the number of main valve body connecting through hole 15 and main valve body connecting seat 14 is six groups, the number of main valve body flange through hole 17 is multiple groups, and the multiple groups of main valve body flange through hole 17 are evenly arranged in the inside of main valve body mounting flange 16.

[0024] Referring to Figure 5The ball valve auxiliary valve body assembly 2 comprises a ball valve auxiliary valve body 20, a valve body arc hard sealing ring seat 21 is arranged in the middle of the inner side of the ball valve auxiliary valve body 20, a valve body sealing ring groove 22 is arranged at one end of the inner side of the ball valve auxiliary valve body 20, a valve body embedded ring groove 23 is arranged at the other end of the inner side of the ball valve auxiliary valve body 20, a valve body connecting seat 24 is fixedly arranged at one side of the ball valve auxiliary valve body 20, a valve body connecting through hole 25 is arranged in the valve body connecting seat 24, a valve body mounting flange 26 is fixedly connected to one end of the ball valve auxiliary valve body 20, a valve body flange through hole 27 is arranged in one end of the valve body mounting flange 26, the valve body connecting seat 24 and the valve body connecting through hole 25 are each provided with six groups, and the valve body flange through hole 27 is provided with multiple groups, and the multiple valve body flange through holes 27 are evenly arranged in the valve body mounting flange 26.

[0025] By embedding and installing the main valve body inner sealing assembly 5 and the auxiliary valve body inner sealing assembly 6 in the main valve body sealing ring groove 12 and the auxiliary valve body sealing ring groove 22 respectively, embedding the valve body embedded ring 13 into the valve body embedded ring groove 23, and locking and fixing the fixed bolts in the main valve body connecting through hole 15 and the auxiliary valve body connecting through hole 25, the ball valve main valve body assembly 1 and the ball valve auxiliary valve body assembly 2 can be fixedly installed, and at this time, the main valve body arc hard sealing ring seat 11 and the auxiliary valve body arc hard sealing ring seat 21 are attached to the outer side surface of the ball valve ball body 4 to achieve the effect of basic hard sealing.

[0026] Referring to Figure 6 The main valve body inner sealing assembly 5 comprises an arc metal sealing ring 50, and the arc metal sealing ring 50 is fixedly provided with a disc-shaped metal spring 51 at one end, and the auxiliary valve body inner sealing assembly 6 is the same in specification and model as the main valve body inner sealing assembly 5.

[0027] By adopting the above scheme, the arc metal sealing ring 50 of the main valve body inner sealing assembly 5 and the auxiliary valve body inner sealing assembly 6 is extruded by the disc-shaped metal spring 51 and is attached to the outer side surface of the ball valve ball body 4 to achieve the effect of secondary elastic sealing, so that the structure can achieve temporary sealing effect when any one of the sealing structures is damaged during use, thereby being safer to use, and the disc-shaped metal spring 51 can automatically adjust the sealing surface pressure and compensate for the expansion difference of the materials at high temperature.

[0028] The working principle of the utility model is: when using, the main valve body inner sealing assembly 5 and the auxiliary valve body inner sealing assembly 6 are respectively embedded and installed in the main valve body sealing ring groove 12 and the auxiliary valve body sealing ring groove 22, the valve body embedding ring 13 is embedded in the valve body embedding groove 23, and is locked and fixed through the fixed bolt penetrating through the main valve body connecting through hole 15 and the auxiliary valve body connecting through hole 25, the ball valve main valve body assembly 1 and the ball valve auxiliary valve body assembly 2 can be fixed and installed, at this time, the main valve body arc surface hard sealing ring seat 11 and the auxiliary valve body arc surface hard sealing ring seat 21 adhere to the outer side surface of the ball valve ball body 4, and the arc surface metal sealing ring 50 of the main valve body inner sealing assembly 5 and the auxiliary valve body inner sealing assembly 6 is extruded by the disc-shaped metal spring 51 and adheres to the outer side surface of the ball valve ball body 4, and the secondary elastic sealing effect is achieved, the structure can achieve temporary sealing effect when any one group of sealing structure is damaged, and the safety is higher, and the disc-shaped metal spring 51 can automatically adjust the sealing surface pressure and compensate the material expansion difference under high temperature.

[0029] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A high temperature and high pressure hard-seal ball valve, characterized by, Include: Ball valve main valve body assembly (1), the ball valve main valve body assembly (1) one end fixedly provided with ball valve auxiliary valve body assembly (2), the ball valve auxiliary valve body assembly (2) inside rotationally provided with ball valve stem (3), the ball valve stem (3) one end fixedly provided with ball valve ball (4), the ball valve main valve body assembly (1) inside one end embedded with main valve body inner sealing assembly (5), the ball valve auxiliary valve body assembly (2) inside one end embedded with auxiliary valve body inner sealing assembly (6), the ball valve ball (4) is located in the ball valve main valve body assembly (1) and ball valve auxiliary valve body assembly (2) inside setting.

2. A high temperature and high pressure hard-sealed ball valve according to claim 1, characterized in that, The ball valve main valve body assembly (1) includes ball valve main valve body (10), the ball valve main valve body (10) inside one end is provided with main valve body arc face hard sealing ring seat (11), the other end of the ball valve main valve body (10) is provided with main valve body sealing ring groove (12), one end of the ball valve main valve body (10) is fixedly provided with valve body embedded ring (13), one end of the ball valve main valve body (10) is fixedly provided with main valve body connecting seat (14), the main valve body connecting seat (14) is provided with main valve body connecting through hole (15) in the inside, the other end of the ball valve main valve body (10) is fixedly connected with main valve body mounting flange (16), one end of the main valve body mounting flange (16) is provided with main valve body flange through hole (17) in the inside.

3. A high temperature and high pressure hard-sealed ball valve according to claim 1, characterized in that, The ball valve auxiliary valve body assembly (2) includes ball valve auxiliary valve body (20), the ball valve auxiliary valve body (20) is provided with auxiliary valve body arc face hard sealing ring seat (21) in the inside middle part, the ball valve auxiliary valve body (20) is provided with auxiliary valve body sealing ring groove (22) in the inside one end, the ball valve auxiliary valve body (20) is provided with valve body embedded ring groove (23) in the inside other end, one end of the ball valve auxiliary valve body (20) is fixedly provided with auxiliary valve body connecting seat (24), the auxiliary valve body connecting seat (24) is provided with auxiliary valve body connecting through hole (25) in the inside, one end of the ball valve auxiliary valve body (20) is fixedly connected with auxiliary valve body mounting flange (26), one end of the auxiliary valve body mounting flange (26) is provided with auxiliary valve body flange through hole (27) in the inside.

4. The high temperature and high pressure hard-sealed ball valve according to claim 1, wherein, The main valve body inner sealing assembly (5) includes arc face metal sealing ring (50), one end of the arc face metal sealing ring (50) is fixedly provided with disc-shaped metal spring (51), the auxiliary valve body inner sealing assembly (6) is same as the main valve body inner sealing assembly (5) in specification and model.

5. A high temperature and high pressure hard-sealed ball valve according to claim 2, characterized in that, The main valve body connecting seat (14) and the main valve body connecting through hole (15) are provided with six groups, the main valve body flange through hole (17) is provided with multiple groups, multiple groups of the main valve body flange through hole (17) are evenly arranged in the inside of the main valve body mounting flange (16).

6. A high temperature and high pressure hard-sealed ball valve according to claim 3, characterized in that, The auxiliary valve body connecting seat (24) and the auxiliary valve body connecting through hole (25) are provided with six groups, the auxiliary valve body flange through hole (27) is provided with multiple groups, multiple groups of the auxiliary valve body flange through hole (27) are evenly arranged in the inside of the auxiliary valve body mounting flange (26).

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