High-temperature-resistant corrugated pipe valve seat structure

Abstract

The utility model provides a high temperature resistant bellows valve seat structure which comprises a valve body, a support assembly and a valve seat, the valve body is provided with an installation groove, the groove bottom of the installation groove is further provided with a guide hole and a through hole, the diameter of the guide hole is smaller than that of the through hole, the support assembly comprises a support cylinder and an annular support plate, the support cylinder is arranged in the guide hole, and the annular support plate is arranged on the support cylinder. The annular supporting plate is arranged at the end of the supporting cylinder, the outer ring edge of the annular supporting plate is connected with the inner wall of the supporting cylinder, a sealing ring is further arranged between the supporting assembly and the valve body, the valve seat is clamped in the supporting cylinder, a corrugated pipe is further arranged between the valve seat and the supporting assembly, one end of the corrugated pipe is welded to the annular supporting plate, and the other end of the corrugated pipe is welded to the valve seat. The utility model has the advantages that the supporting cylinder is arranged, and the sealing ring is arranged between the supporting component and the valve body, so that a medium does not leak through the outer side of the corrugated pipe under extreme conditions, and when the corrugated pipe fails or is blocked, the corrugated pipe can be directly replaced without replacing the whole valve, so that the cost is reduced, and the working efficiency is improved. And meanwhile, the phenomenon that under the high-temperature working condition, the parts are blocked due to expansion is avoided.

Description

Technical Field

[0001] The utility model relates to the field of valve body equipment, in particular to a high-temperature resistant bellows valve seat structure. Background Art

[0002] At present, graphite sealing rings are inevitably used in traditional high-temperature ball valves. However, the maximum temperature of graphite sealing rings in the presence of oxygen can only reach 450°C, and can only be barely used in 500°C under anaerobic conditions. Under long-term high-temperature conditions, graphite will undergo severe ablation, resulting in internal leakage of the valve as a whole. At the same time, due to the expansion of components under high temperature, another major failure of high-temperature ball valves is jamming. Therefore, conventional high-temperature structure ball valves cannot meet the use requirements when facing extreme conditions of ultra-high temperature (above 550°C). Under extreme pressure, the medium will leak through the outside of the bellows. Once internal leakage or jamming occurs, it will cause project shutdown and economic losses at the least, and even worse, it will cause personnel safety accidents. At the same time, during maintenance, the replacement of the bellows requires the replacement of the entire valve body, which is very inconvenient. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a high temperature resistant bellows valve seat structure for solving the technical problems in the prior art that the medium leaks through the outside of the bellows under extreme pressure conditions and the bellows is difficult to replace.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a high temperature resistant bellows valve seat structure, comprising:

[0005] A valve body, wherein a mounting groove is provided on the valve body, and a guide hole and a through hole are also provided at the bottom of the mounting groove, wherein the diameter of the guide hole is smaller than the diameter of the through hole;

[0006] A support assembly, the support assembly comprising a support tube and an annular support plate, the support tube is arranged in the guide hole, the annular support plate is arranged at the end of the support tube, the outer ring edge of the annular support plate is welded to the inner wall of the support tube, and a sealing ring is also arranged between the support assembly and the valve body;

[0007] A valve seat is installed in the support cylinder, and a bellows is provided between the valve seat and the support assembly, one end of the bellows is welded to the annular support plate, and the other end of the bellows is welded to the valve seat.

[0008] The advantages of adopting the above technical solution are as follows: by setting the support cylinder and arranging a sealing ring between the support component and the valve body, in extreme cases, the medium will not leak through the outside of the bellows. When the bellows fails or gets stuck, the bellows can be directly replaced with this structure without replacing the whole valve, and at the same time, it can avoid the phenomenon of getting stuck due to the expansion of parts under high-temperature working conditions.

[0009] Optionally, the support component further includes an installation part, the installation part is located in the installation groove, and the installation part is installed in the installation groove through bolts.

[0010] Optionally, the inner diameter of the annular support plate is equal to the diameter of the through hole.

[0011] Optionally, the support cylinder, the installation part and the annular support plate are integrally formed by welding.

[0012] Optionally, a sealing groove is further provided at the bottom of the installation groove, the sealing groove is arranged around the guiding hole, and the sealing ring is arranged in the sealing groove.

[0013] Optionally, the sealing ring is made of high-temperature resistant material.

[0014] As described above, a high-temperature resistant bellows valve seat structure of the present utility model has the following beneficial effects: by setting the support cylinder and arranging a sealing ring between the support component and the valve body, in extreme cases, the medium will not leak through the outside of the bellows. When the bellows fails or gets stuck, the bellows can be directly replaced with this structure without replacing the whole valve, and at the same time, it can avoid the phenomenon of getting stuck due to the expansion of parts under high-temperature working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It shows a schematic cross-sectional structure diagram in an embodiment of the present utility model;

[0016] Figure 2 It shows Figure 1 a partial enlarged view at X in

[0017] Figure 3 It shows a schematic cross-sectional structure diagram of the valve body in an embodiment of the present utility model.

[0018] DESCRIPTION OF REFERENCE NUMERALS

[0019] 1 Valve body

[0020] 101 Installation groove

[0021] 102 Sealing groove

[0022] 103 Guiding groove

[0023] 104 Through-hole

[0024] 201 Support cylinder

[0025] 202 Installation part

[0026] 203 Annular support plate

[0027] 3 Sealing ring

[0028] 4 Valve seat

[0029] 5 Bellows Specific implementation mode

[0030] The following illustrates the implementation mode of the present utility model through specific examples. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.

[0031] Please refer to Figures 1 to 3 . It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present utility model. The illustrations only show the components related to the present utility model, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component during implementation can be arbitrarily changed, and the component layout type may also be more complex. The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the implementation scope of the present utility model. The change or adjustment of their relative relationships, without substantial change in technical content, should also be regarded as the scope where the present utility model can be implemented.

[0032] Please see Figures 1 through 3 As shown, the present utility model provides a high-temperature resistant bellows valve seat structure, including:

[0033] Valve body 1, on which an installation groove 101 is provided. A guiding hole 103 and a through-hole 104 are also provided at the bottom of the installation groove 101, and the diameter of the guiding hole 103 is smaller than the diameter of the through-hole 104;

[0034] Support assembly, the support assembly includes a support cylinder 201 and an annular support plate 203. The support cylinder 201 is arranged in the guide hole 103, the annular support plate 203 is arranged at the end of the support cylinder 201, and the outer ring edge of the annular support plate 203 is welded to the inner wall of the support cylinder 201. A sealing ring 3 is also provided between the support assembly and the valve body 1;

[0035] Valve seat 4, the valve seat 4 is installed in the support cylinder 201. A bellows 5 is also provided between the valve seat 4 and the support assembly. One end of the bellows 5 is welded to the annular support plate 203, and the other end of the bellows 5 is welded to the valve seat 4.

[0036] It should also be noted that the bellows 5 can compensate for and absorb the axial, lateral and angular thermal deformations generated by the pipeline due to factors such as temperature changes and pressure fluctuations, so as to maintain the stability and tightness of the pipeline system. At the same time, it has certain elasticity and flexibility, and can effectively absorb equipment vibration and external impact.

[0037] It should also be noted that by providing the support cylinder 201 and setting the sealing ring 3 between the support assembly and the valve body 1, in extreme cases, the medium will not leak through the outside of the bellows. When the bellows 5 fails or jams, this structure can directly replace the bellows 5 without replacing the entire valve. At the same time, it avoids the jamming phenomenon caused by the expansion of parts under high-temperature working conditions.

[0038] Exemplarily, the support assembly further includes an installation part 202. The installation part 202 is located in the installation groove 101, and the installation part 202 is installed in the installation groove 101 by bolts.

[0039] Exemplarily, the inner diameter of the annular support plate 203 is equal to the diameter of the through hole 104.

[0040] It should also be noted that the function of setting the annular support plate 203 is to provide support and protection for the bellows 5 to prevent the medium from leaking from the outer wall of the bellows.

[0041] Exemplarily, the support cylinder 201, the installation part 202 and the annular support plate 203 are integrally formed by welding.

[0042] Exemplarily, a sealing groove 102 is further provided at the bottom of the installation groove 101. The sealing groove 102 is arranged around the guide hole 103, and the sealing ring 3 is arranged in the sealing groove 102.

[0043] Exemplarily, the sealing ring 3 is made of high-temperature resistant material.

[0044] It should also be noted that the sealing ring 3 is made of high-temperature resistant material, so that the sealing ring can still play a stable sealing effect in an extremely high-temperature environment.

[0045] During use, first weld the support cylinder 201, the mounting portion 202 and the annular support plate 203. Place the sealing ring 3 in the corresponding sealing groove 102, then place the corrugated pipe 5 in the support cylinder 201, and set the support assembly on the valve body 1 through bolts. Set the valve seat 4 to be clamped on the support cylinder 201 to complete the installation of the valve seat structure.

[0046] In summary, by adopting a high-temperature resistant corrugated pipe valve seat structure of the present invention, through the setting of the support cylinder 201 and the sealing ring 3 between the support assembly and the valve body 1, it is ensured that in extreme cases, the medium will not leak through the outside of the corrugated pipe. When the corrugated pipe 5 fails or gets stuck, the corrugated pipe 5 can be directly replaced without replacing the entire valve, and at the same time, it is avoided that the parts get stuck due to expansion under high-temperature working conditions.

[0047] The above embodiments are only used to exemplarily illustrate the principle and its effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field to which the present invention pertains without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A high temperature resistant bellows valve seat structure, characterized in that: include: A valve body (1), wherein a mounting groove (101) is provided on the valve body (1), a guide hole (103) and a through hole (104) are also provided at the bottom of the mounting groove (101), and the diameter of the guide hole (103) is smaller than the diameter of the through hole (104); A support assembly, the support assembly comprising a support cylinder (201) and an annular support plate (203), the support cylinder (201) being arranged in the guide hole (103), the annular support plate (203) being arranged at the end of the support cylinder (201), the outer ring edge of the annular support plate (203) being welded to the inner wall of the support cylinder (201), and a sealing ring (3) being further arranged between the support assembly and the valve body (1); A valve seat (4), wherein the valve seat (4) is installed in the support cylinder (201), and a bellows (5) is also provided between the valve seat (4) and the support assembly, wherein one end of the bellows (5) is welded to the annular support plate (203), and the other end of the bellows (5) is welded to the valve seat (4).

2. A high temperature resistant bellows valve seat structure according to claim 1, characterized in that: The support assembly further comprises a mounting portion (202), wherein the mounting portion (202) is located in the mounting groove (101), and the mounting portion (202) is mounted in the mounting groove (101) by means of bolts.

3. A high temperature resistant bellows valve seat structure according to claim 2, characterized in that: The inner diameter of the annular support plate (203) is equal to the diameter of the through hole (104).

4. A high temperature resistant bellows valve seat structure according to claim 3, characterized in that: The support cylinder (201), the mounting portion (202) and the annular support plate (203) are welded together to form an integral body.

5. A high temperature resistant bellows valve seat structure according to claim 4, characterized in that: The groove bottom of the installation groove (101) is also provided with a sealing groove (102), the sealing groove (102) is arranged around the guide hole (103), and the sealing ring (3) is arranged in the sealing groove (102).

6. A high temperature resistant bellows valve seat structure according to claim 5, characterized in that: The sealing ring (3) is made of high temperature resistant material.

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