CN211853003U - Novel floating sealing structure of monitoring pressure regulating valve - Google Patents

Abstract

The utility model relates to a novel floating sealing structure of a monitoring pressure regulating valve, which comprises a valve seat and a sleeve. A first sealing groove and a second sealing groove are arranged at the joint between the valve seat and the sleeve. The No. 1 elastic seal and the No. 2 elastic seal are installed. The No. 1 elastic seal and the No. 2 elastic seal are integrated. One side of the sleeve is provided with a metal sealing surface, and the metal sealing surface is provided with a strong seal. There are mounting holes inside the No. 2 elastic seal, and floating seals are arranged in the mounting holes. By using the high temperature resistance, corrosion resistance, wear resistance and aging resistance of the sealing material, the sealing performance of the valve can be better improved. At the same time, through the installation operation of the floating seal, the No. 1 elastic seal and the No. 2 elastic seal are pushed in reverse with the pressure of the medium, which strengthens the sealing effect, and the setting of the floating seal can micro-adjust the seal size error and micro-adjust the sealing parts. coaxiality error.

Description

New type of floating seal structure for monitoring pressure regulating valve

technical field

The utility model relates to the technical field of monitoring pressure regulating valves, in particular to a novel floating sealing structure for monitoring pressure regulating valves.

Background technique

The monitoring pressure regulating valve can basically be said to be a pressure reducing valve. The working principle of the pressure reducing valve is as follows: the high pressure medium is charged into a relatively large cavity through a small hole to achieve pressure reduction. The two sides of the piston are the outlet port, and the other side is the artificial pressure, and the valve stem that controls the size of the small hole is connected to the diaphragm (piston), so that as long as a fixed pressure is given, the pressure in the outlet port will always be equal to this pressure. , This artificially given pressure can be provided by a spring or an air source or a hydraulic source. In today's technical means, in monitoring the valve seat seal of the pressure regulating valve, the common operation is to use the valve seat gasket to seal, and the valve The seat gasket is made of polyoxymethylene material. The defect of this material is that it is not resistant to acid and alkaline objects. Direct sunlight will also damage it, and it is easier to age. Long-term backlog will cause deformation, which is easy to cause valve leakage. To a certain extent , reducing the sealing effect of the valve seat connection.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, and provide a novel floating sealing structure of the monitoring pressure regulating valve, which has the advantages of better sealing performance and the ability of micro-adjustment sealing.

The technical solution to achieve the above purpose is:

The utility model provides a novel floating sealing structure for a monitoring pressure regulating valve, which comprises a valve seat and a sleeve. The connection between the valve seat and the sleeve is provided with a first sealing groove and a second sealing groove. The first sealing groove and the second sealing groove The No. 1 elastic seal and the No. 2 elastic seal are installed inside. The No. 1 elastic seal and the No. 2 elastic seal are integrated. One side of the sleeve is provided with a metal sealing surface, and the metal sealing surface is provided with a strong seal , the No. 2 elastic seal is provided with a mounting hole inside, and a floating seal is provided in the mounting hole.

Preferably, the inner dimensions of the first sealing groove and the second sealing groove match the outer dimensions of the No. 1 elastic seal and No. 2 elastic seal assembly. In order to ensure the normal and stable progress of the basic sealing process.

Preferably, the floating seal is an elastic energy storage sealing ring member. In order to ensure strong sealing performance at the joint.

Preferably, the No. 1 elastic sealing member and the No. 2 elastic sealing member are both elastic sealing gasket members. In order to ensure the durability of the seal and better sealing effect.

Preferably, the strong seal is a metal hard seal structure. In order to ensure the safety of sealing joints.

Preferably, the section of the No. 2 elastic seal is a U-shaped structure. In order to facilitate the installation of seals.

The beneficial effects of the utility model are: in the process of using the utility model, the sealing performance of the valve can be better improved by adopting the high temperature resistance, corrosion resistance, wear resistance and aging resistance of the sealing material, and at the same time through the use of the sealing material. In the installation operation of floating seal, the No. 1 elastic seal and No. 2 elastic seal are pushed in reverse with the pressure of the medium, so as to press the part of the metal sealing surface, which strengthens the sealing effect, and the setting of the floating seal can slightly adjust the seal size error As well as the coaxiality error caused by micro-adjustment of sealing parts, it can more effectively protect the sealing surface and effectively prevent the leakage of the valve. When the valve is closed, the residue will not be squeezed on the sealing surface, and the metal hard sealing structure is provided. , Once the floating seal fails, the metal face-to-face sealing can play a sealing effect. At the same time, this structure also makes the valve meet the fire protection requirements of API6D. The structure is simple, easy to install and use, and ensures a strong sealing effect at the connection of the valve seat.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the enlarged structural representation at A in Fig. 1;

FIG. 3 is a schematic structural diagram of the sealing form of the old polyoxymethylene material.

Description of reference numbers:

1. Valve seat; 2. Sleeve; 3. No. 1 elastic seal; 4. First sealing groove; 5. Floating seal; 6. Mounting hole; 7. Metal sealing surface; 8. Strong seal; 9. Second Sealing groove; 10. No. 2 elastic seal; 11. POM gasket.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIGS. 1 to 3 , the present utility model provides a novel floating sealing structure for a monitoring pressure regulating valve, including a valve seat 1 and a sleeve 2 . The connection between the valve seat 1 and the sleeve 2 is provided with a first sealing groove 4 and a second sealing groove 4 Two sealing grooves 9, the first sealing groove 4 and the second sealing groove 9 are installed with the No. 1 elastic seal 3 and the No. 2 elastic seal 10, and the No. 1 elastic seal 3 and the No. 2 elastic seal 10 are integrally formed. , one side of the sleeve 2 is provided with a metal sealing surface 7, the metal sealing surface 7 is provided with a strong seal 8, the interior of the second elastic seal 10 is provided with a mounting hole 6, and the mounting hole 6 is provided with a floating seal 5, the original Some sealing surfaces use polyoxymethylene gaskets 11 for sealing operations. In the present invention, a corresponding No. 1 elastic seal 3, No. 2 elastic seal 10 and a floating seal are installed between the sleeve 2 and the valve seat 1. 5. The sealing materials used are resistant to high temperature, corrosion, wear and aging, which can better improve the sealing performance of the valve connection. At the same time, the design of the floating seal 5 has many advantages, the structure is simple, and it is easy to install and use. , to ensure the strong sealing effect of the valve seat connection 1. The utility model further describes the device according to the accompanying drawings.

Further, as shown in FIG. 2 , the inner dimensions of the first sealing groove 4 and the second sealing groove 9 match the outer dimensions of the No. 1 elastic seal 3 and the No. 2 elastic seal 10 assembly to ensure the basic sealing. performance, so that the corresponding connection has a normal and stable sealing effect.

Further, as shown in FIG. 2, the floating seal 5 is an elastic energy storage sealing ring member, and the elastic energy storage sealing ring member is installed in the corresponding groove, and the spring is pressed to form an outward tension. , to make the sealing lip close to the sealing groove, because the spring permanently provides elastic force to the sealing lip, it can make up for the wear of the sealing shell and the eccentricity of the matching parts, thus forming a seal in the range from vacuum to low pressure. In addition, the system pressure will assist the spring to store energy. The higher the pressure, the more fully the sealing lip fits the groove, thus forming a high-pressure seal and ensuring strong sealing performance at the joint.

Further, as shown in FIG. 2 , the No. 1 elastic seal 3 and the No. 2 elastic seal 10 are elastic gasket members, and the constituent materials of the elastic gasket members have high temperature resistance, corrosion resistance, wear resistance and aging resistance. Advantages, these properties can better improve the sealing performance of the valve connection.

Further, as shown in Fig. 2, the strong seal 8 is a metal hard seal structure. With the metal hard seal structure, once the sealing effect of the floating seal 5 fails, the metal face-to-face seal can play a sealing effect. At the same time, this structure also makes the valve. It has reached the fire protection requirements of API6D.

Further, as shown in FIG. 2 , the section of the No. 2 elastic seal 10 has a U-shaped structure, which not only ensures a better matching and sealing ability to the seal, but also facilitates the installation and operation of the floating seal 5 .

The working principle of the utility model is as follows: during the use of the utility model, the corresponding No. 1 elastic seal 3, No. 2 elastic seal 10 and floating seal 5 are installed between the sleeve 2 and the valve seat 1, The sealing materials used are resistant to high temperature, corrosion, wear, and aging, which can better improve the sealing performance of the valve connection. At the same time, the design of floating seal 5 has multiple advantages. The pressure of the medium is used to push No. 1 in the opposite direction. The parts of the elastic seal 3 and the second elastic seal 10 make it press against the part of the metal sealing surface 7 to strengthen the sealing effect. The floating seal 5 is an elastic energy storage sealing ring member, and the elastic energy storage sealing ring member is installed in the corresponding In the groove, the spring is pressed to form an outward tension, which makes the sealing lip close to the sealing groove. Since the spring permanently provides elastic force to the sealing lip, it can compensate for the wear of the sealing shell and the eccentricity of the matching parts, thus forming a transition from vacuum to Sealing in the low pressure range. In addition, the system pressure will assist the spring to store energy. The higher the pressure, the more fully the sealing lip fits the groove, thus forming a high-pressure seal, which can adjust the size error of the seal and the coaxiality error caused by the sealing parts. , the installation and use of the floating seal 5 can more effectively protect the connection of the sealing surface. When the valve is closed, the residue will not be squeezed on the sealing surface. Through the installation of the strong seal 8 at the metal sealing surface 7, once the floating The sealing effect of seal 5 is invalid, and the metal face-to-face sealing can play a sealing effect. At the same time, this structure also makes the valve meet the fire protection requirements of API6D. The structure is simple, easy to install and use, and ensures a strong sealing effect at the connection of valve seat 1. .

The present invention has been described in detail above with reference to the embodiments of the accompanying drawings, and those of ordinary skill in the art can make various modifications to the present invention according to the above description. Therefore, some details in the embodiments should not be construed to limit the present invention, and the present invention will take the scope defined by the appended claims as the protection scope of the present invention.

Claims (6)

1. The novel floating sealing structure is characterized by comprising a valve seat and a sleeve, wherein a first sealing groove and a second sealing groove are formed in the joint of the valve seat and the sleeve, a first elastic sealing element and a second elastic sealing element are arranged in the first sealing groove and the second sealing groove, the first elastic sealing element and the second elastic sealing element are of an integrated structure, one side of the sleeve is provided with a metal sealing surface, a powerful seal is arranged on the metal sealing surface, a mounting hole is formed in the inside of the second elastic sealing element, and a floating seal is arranged in the mounting hole.

2. The novel floating seal structure for monitoring and controlling a pressure regulating valve according to claim 1, wherein the inner dimensions of the first seal groove and the second seal groove are matched with the outer dimensions of the combination of the first elastic seal and the second elastic seal.

3. The novel floating seal structure for monitoring and controlling a pressure regulating valve according to claim 1, wherein the floating seal is an elastic energy storage sealing ring member.

4. The novel floating seal structure for monitoring and controlling a pressure regulating valve according to claim 1, wherein both the first elastic sealing element and the second elastic sealing element are elastic sealing gasket members.

5. The novel floating seal structure for monitoring and controlling a pressure regulating valve according to claim 1, wherein said power seal is a metal hard seal structure.

6. The novel floating sealing structure for monitoring and controlling the pressure regulating valve according to claim 1, wherein the section of the second elastic sealing element is in a U-shaped structure.

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