Corrosion-resistant boiler valve sealing structure

Abstract

The utility model discloses a corrosion-resistant boiler valve sealing structure which comprises a metal sealing ring and a hollow sealing air bag ring, a heat conduction ring is arranged on the outer wall of the metal sealing ring, a connecting ring is arranged on the inner wall of the metal sealing ring, a pasting strip is arranged on the inner wall of the connecting ring, and the hollow sealing air bag ring is arranged on the inner side of the pasting strip. A connecting hole is formed in the surface of the hollow sealing air bag ring. According to the corrosion-resistant boiler valve sealing structure, heat can be conveyed into the connecting ring through the heat conduction ring, the hollow sealing air bag ring expands when heated under the heat, the diameter of the metal sealing ring can be changed, and therefore the corrosion-resistant boiler valve sealing structure can be suitable for different valve flanges; and meanwhile, gas or liquid can be injected into the hollow sealing air bag ring, so that the hollow sealing air bag ring is bulged, and the injected medium can be selected according to the use environment, so that the hollow sealing air bag ring can adapt to different working environments.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler valves, in particular to a corrosion-resistant boiler valve sealing structure. Background Art

[0002] Boilers are mechanical devices that can convert fuel energy into energy such as water vapor. There are many different types of valves in boilers, which cover many aspects of boilers. Boiler valves can control the flow direction and flow rate of fluids, and can also control parameters such as pressure and temperature of the boiler. There are many types of boiler valves. The safety valve is one of the most important valves in the boiler, mainly used to protect the boiler from explosion due to excessive internal pressure. The safety valve always remains in the open state and will only close when the internal pressure of the boiler gradually increases to the preset value. This is achieved through a spring mechanism. When the internal pressure of the boiler reaches a certain value, the spring mechanism will generate a reaction force to close the valve. The regulating valve also has many applications in boilers. For example, installing a regulating valve on the boiler water inlet pipe can control the water flow rate and the inlet water temperature of the boiler. Installing a regulating valve on the boiler steam outlet pipe can control the flow rate and temperature of steam. The regulating valve is usually composed of a regulating mechanism and an opening indicator. The opening indicator can display the opening of the valve so that the operator can adjust the valve. The valve sealing structure refers to the equipment or structure that can completely prevent the medium from passing through the valve when the valve is in the closed position. The sealing performance of the valve has an important impact on the service life, safety and operational reliability of the valve.

[0003] As shown in patent application: 202322175673.8, a valve sealing ring includes an inner ring, an outer ring and a buffer connecting strip, wherein the inner ring is arranged concentrically with the outer ring and is arranged in the same plane, the diameter of the outer ring is larger than the diameter of the inner ring, the buffer connecting strip is arranged between the inner ring and the outer ring, and is also arranged concentrically with the inner ring and the outer ring, the shape of the buffer connecting strip includes a wavy shape, and its wavy design enables it to extend perpendicularly to the inner and outer directions when it is squeezed by the connecting piece, and the upper and lower side surfaces of the buffer connecting strip are provided with a plurality of reinforcing ribs, one end of the reinforcing rib is connected to the inner side of the outer ring, and the other end is connected to the outer side of the inner end, the reinforcing rib can effectively improve the overall structural strength of the valve sealing ring, and the extension lines of the plurality of the reinforcing ribs all point to the center position of the inner ring and the outer ring, and the valve sealing ring utilizes the reinforcing ribs to enhance the overall structural strength, and utilizes the wavy buffer connecting strip to ensure its overall ductility.

[0004] Similar to the above application, there are still the following deficiencies:

[0005] When the existing device is used, it will be affected by the environment, and the medium in the seal needs to be changed.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and a corrosion-resistant boiler valve sealing structure is proposed, in order to achieve a more practical purpose. Utility Model Content

[0007] The purpose of the utility model is to provide a corrosion-resistant boiler valve sealing structure to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant boiler valve sealing structure, comprising a metal sealing ring and a hollow sealing airbag ring, the outer wall of the metal sealing ring is provided with a heat-conducting ring, and the inner wall of the metal sealing ring is provided with a connecting ring, the inner wall of the connecting ring is provided with an adhesive strip, the hollow sealing airbag ring is provided on the inner side of the adhesive strip, and a connecting hole is opened on the surface of the hollow sealing airbag ring.

[0009] Furthermore, a connecting piece is provided on the rear side of the metal sealing ring, and a mounting hole is provided inside the connecting piece.

[0010] Furthermore, an inner thread strip is arranged on the inner wall of the connecting hole, and a sealing plug is arranged inside the connecting hole.

[0011] Furthermore, an external thread strip is arranged on the outer wall of the sealing plug, and the sealing plug is threadedly connected to the connecting hole.

[0012] Furthermore, a positioning ring is inserted into the interior of the hollow sealed airbag ring, and a rubber pad is arranged on the outer wall of the positioning ring.

[0013] Furthermore, the shape and structure of the positioning ring are consistent with the shape and structure of the hollow sealing airbag ring, and the positioning ring and the rubber pad are connected by adhesive bonding.

[0014] Furthermore, the metal sealing ring and the heat conducting ring are an integrated structure, and the thickness of the connecting ring is smaller than the thickness of the metal sealing ring.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the corrosion-resistant boiler valve sealing structure adopts a disassembly and assembly structure, which is convenient for disassembling parts inside the device, thereby facilitating replacement of parts and ensuring normal use of the device.

[0016] 1. The utility model can transfer heat to the inside of the connecting ring through the heat-conducting ring. The hollow sealing airbag ring expands when exposed to heat, which can change the diameter of the metal sealing ring, so that it can be suitable for different valve flanges. The adhesive strip can limit the hollow sealing airbag ring to prevent the hollow sealing airbag ring from deviating. At the same time, gas or liquid can be injected into the inside of the hollow sealing airbag ring to make the hollow sealing airbag ring bulge. The injected medium can be selected according to the use environment, so as to adapt to different working environments. When the hollow sealing airbag ring is not injected with a medium, the positioning ring can support the hollow sealing airbag ring to prevent the hollow sealing airbag ring from deforming. The positioning ring on the surface of the rubber pad is in direct contact with the hollow sealing airbag ring, so as to reduce the wear of the hollow sealing airbag ring and ensure the integrity of the hollow sealing airbag ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of a corrosion-resistant boiler valve sealing structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a metal sealing ring of a corrosion-resistant boiler valve sealing structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of a connection hole-external threaded hole of a corrosion-resistant boiler valve sealing structure of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of a corrosion-resistant boiler valve sealing structure positioning ring and a hollow sealing airbag ring structure.

[0021] In the figure: 1. Metal sealing ring; 2. Heat-conducting ring; 3. Connecting ring; 4. Connecting piece; 5. Mounting hole; 6. Adhesive strip; 7. Hollow sealing airbag ring; 8. Connecting hole; 9. Internal thread strip; 10. Sealing plug; 11. External thread strip; 12. Positioning ring; 13. Rubber pad. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] like Figure 1-Figure 4As shown, a corrosion-resistant boiler valve sealing structure comprises a metal sealing ring 1 and a hollow sealing airbag ring 7, wherein a heat-conducting ring 2 is arranged on the outer wall of the metal sealing ring 1, and a connecting ring 3 is arranged on the inner wall of the metal sealing ring 1, and an adhesive strip 6 is arranged on the inner wall of the connecting ring 3, and the hollow sealing airbag ring 7 is arranged on the inner side of the adhesive strip 6, and a connecting hole 8 is provided on the surface of the hollow sealing airbag ring 7, a connecting piece 4 is arranged on the rear side of the metal sealing ring 1, and a mounting hole 5 is provided inside the connecting piece 4, an internal thread strip 9 is arranged on the inner wall of the connecting hole 8, and a sealing plug 10 is arranged inside the connecting hole 8, an external thread strip 11 is arranged on the outer wall of the sealing plug 10, and the sealing plug 10 is threadedly connected to the connecting hole 8, a positioning ring 12 is passed through the inside of the hollow sealing airbag ring 7, and a rubber pad 13 is arranged on the outer wall of the positioning ring 12, the shape and structure of the positioning ring 12 are consistent with the shape and structure of the hollow sealing airbag ring 7, and the positioning ring 12 and the rubber pad 13 are adhesively connected, and the metal sealing ring 1 and The heat-conducting ring 2 is an integrated structure, and the thickness of the connecting ring 3 is smaller than that of the metal sealing ring 1. The heat-conducting ring 2 can transport heat to the inside of the connecting ring 3. The hollow sealing airbag ring 7 expands when exposed to heat, which can change the diameter of the metal sealing ring 1, so that it can be suitable for different valve flanges. The adhesive strip 6 can limit the hollow sealing airbag ring 7 to prevent the hollow sealing airbag ring 7 from shifting. At the same time, gas or liquid can be injected into the inside of the hollow sealing airbag ring 7 to make the hollow sealing airbag ring 7 bulge. The injected medium can be selected according to the use environment, so that it can adapt to different working environments. When the hollow sealing airbag ring 7 is not injected with a medium, the positioning ring 12 can support the hollow sealing airbag ring 7 to prevent the hollow sealing airbag ring 7 from deforming, and the positioning ring 12 on the surface of the rubber pad 13 is in direct contact with the hollow sealing airbag ring 7, thereby reducing the wear on the hollow sealing airbag ring 7 and ensuring the integrity of the hollow sealing airbag ring 7.

[0024] Working principle: When this corrosion-resistant boiler valve sealing structure is used, first Figure 1-Figure 4 , press the hollow sealing airbag ring 7 so that the adhesive strip 6 on its outer wall contacts the connecting ring 3. After fixing it, put the metal sealing ring 1 on the flange of the boiler valve. The heat-conducting ring 2 can transfer heat to the inside of the metal sealing ring 1. The hollow sealing airbag ring 7 will automatically expand when heated, which can achieve a sealing effect. The metal sealing ring 1 has good corrosion resistance due to the material principle. In different use environments, the sealing plug 10 can be opened to inject different media, so that the hollow sealing airbag ring 7 can swell, thereby adapting to different use environments. When the medium is not needed, the positioning ring 12 is passed through the connecting hole 8 into the hollow sealing airbag ring 7 to support the hollow sealing airbag ring 7, and the positioning ring 12 on the surface of the rubber pad 13 is in direct contact with the hollow sealing airbag ring 7, thereby reducing the wear on the hollow sealing airbag ring 7 and ensuring the integrity of the hollow sealing airbag ring 7.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A corrosion-resistant boiler valve sealing structure, comprising a metal sealing ring (1) and a hollow sealing airbag ring (7), characterized in that: The outer wall of the metal sealing ring (1) is provided with a heat-conducting ring (2), and the inner wall of the metal sealing ring (1) is provided with a connecting ring (3), the inner wall of the connecting ring (3) is provided with an adhesive strip (6), the hollow sealing airbag ring (7) is arranged on the inner side of the adhesive strip (6), and a connecting hole (8) is opened on the surface of the hollow sealing airbag ring (7).

2. A corrosion-resistant boiler valve sealing structure according to claim 1, characterized in that: A connecting piece (4) is provided on the rear side of the metal sealing ring (1), and a mounting hole (5) is provided inside the connecting piece (4).

3. The corrosion-resistant boiler valve sealing structure according to claim 1, characterized in that: An inner thread strip (9) is arranged on the inner wall of the connecting hole (8), and a sealing plug (10) is arranged inside the connecting hole (8).

4. The corrosion-resistant boiler valve sealing structure according to claim 3 is characterized in that: An external thread strip (11) is arranged on the outer wall of the sealing plug (10), and the sealing plug (10) is threadedly connected to the connecting hole (8).

5. The corrosion-resistant boiler valve sealing structure according to claim 1, characterized in that: A positioning ring (12) is inserted into the interior of the hollow sealing airbag ring (7), and a rubber pad (13) is arranged on the outer wall of the positioning ring (12).

6. The corrosion-resistant boiler valve sealing structure according to claim 5, characterized in that: The shape and structure of the positioning ring (12) match the shape and structure of the hollow sealing airbag ring (7), and the positioning ring (12) and the rubber pad (13) are connected by adhesive bonding.

7. The corrosion-resistant boiler valve sealing structure according to claim 1, characterized in that: The metal sealing ring (1) and the heat conducting ring (2) are an integrated structure, and the thickness of the connecting ring (3) is smaller than the thickness of the metal sealing ring (1).

Images