Quick connector for high-temperature pipeline

Abstract

The utility model relates to a quick connector for a high-temperature pipeline, which comprises a small threaded connector, a large threaded connector and a double-thread nut, one end of the double-thread nut is in threaded connection with the small threaded connector, the other end of the double-thread nut is in threaded connection with the large threaded connector, and a high-temperature gasket is arranged between the small threaded connector and the large threaded connector. The small screwed joint and the large screwed joint mutually extrude the high-temperature gasket to achieve the sealing effect, pipelines of an SOFC system are quickly connected through the small screwed joint, the large screwed joint and the double-thread nut, the small screwed joint and the large screwed joint mutually extrude the high-temperature gasket to achieve the sealing effect, operation is convenient, the requirement for detachability is met, and the sealing effect is achieved. And meanwhile, the occupied space is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline joint technical field, concretely relates to a quick coupling for high temperature pipeline. BACKGROUND

[0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC for short) SOFC system has highly integrated inside, and the inside contains electric pile, heat exchanger, combustor, desulfurizer, evaporator and other components, wherein the electric pile and the like are as vulnerable parts, and the pipeline connection needs to have detachability, and simultaneously due to the high system integration, the available space inside is small, and the traditional pipeline flange will lead to space limitation when being used, and the flange fastener is very inconvenient to operate. SUMMARY

[0003] The utility model discloses a quick coupling for high temperature pipeline to solve the technical problem in the background art.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a quick coupling for high temperature pipeline, including small thread joint, big thread joint and double thread nut, one end of double thread nut is connected with small thread joint threadedly, the other end of double thread nut is connected with big thread joint threadedly, small thread joint and big thread joint are equipped with high temperature gasket between, and small thread joint and big thread joint extrude high temperature gasket to reach the effect of sealing.

[0005] Further, the double thread nut includes a big thread section and a small thread section, the pitch of the big thread section is greater than the pitch of the small thread section, and the basic minor diameter of the big thread section is greater than the basic major diameter of the small thread section.

[0006] Further, the small thread joint includes a first connecting section, a first stop block and a first thread section arranged from bottom to top, and the first thread section is threadedly matched with the small thread section; the big thread joint includes a second thread section, a second stop block and a second connecting section arranged from bottom to top, and the second thread section is threadedly matched with the big thread section.

[0007] Further, the first connecting section is connected with the pipeline on the SOFC system through welding.

[0008] Compared with the prior art, the utility model has the beneficial effects that: the utility model connects the pipeline of SOFC system through small thread joint, big thread joint and double thread nut, small thread joint and big thread joint extrude high temperature gasket to reach the effect of sealing, which is convenient to operate, meets detachability, and occupies small space. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the whole structure schematic view of the utility model;

[0010] Figure 2 It is the explosion drawing of the utility model;

[0011] Figure 3 It is the before tightening schematic view of the utility model;

[0012] Figure 4 It is the after tightening schematic view of the utility model;

[0013] The names of the components marked in the drawing are as follows: 1, small thread joint;11, first connecting section;12, first stop block;13, first threaded section;2, large thread joint;21, second threaded section;22, second stop block;23, second connecting section;3, double thread nut;31, large threaded section;32, small threaded section;4, high temperature gasket. DETAILED DESCRIPTION

[0014] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0015] Embodiment: please refer to Figures 1-4 A kind of high temperature pipeline quick coupling, including small thread joint 1, large thread joint 2 and double thread nut 3, one end of double thread nut 3 is connected in screw thread with small thread joint 1, the other end of double thread nut 3 is connected in screw thread with large thread joint 2, the quick connection of small thread joint 1, large thread joint 2 and double thread nut 3 is realized, simultaneously meet detachability;Small thread joint 1, large thread joint 2 and double thread nut 3 can be tightened quickly using spanner, it is easy to operate, and the space occupied after tightening is also relatively small;In addition, double thread nut 3 relative to single thread nut, its stress is more uniform, effectively weakens high temperature sintering situation, facilitates disassembly after cooling down;Small thread joint 1 and large thread joint 2 are equipped with high temperature gasket 4, high temperature gasket 4 adopts high temperature resistant material, generally refers to the gasket for resisting 1000 degrees above sealing, including high temperature cladding pad and ceramic fiber lining, small thread joint 1 and large thread joint 2 extrude high temperature gasket 4 to reach the effect of sealing.

[0016] The double-threaded nut 3 comprises a large-threaded section 31 and a small-threaded section 32, the pitch of the large-threaded section 31 is larger than that of the small-threaded section 32, the basic small diameter of the large-threaded section 31 is larger than that of the small-threaded section 32, and the high-temperature gasket 4 is clamped at the joint of the large-threaded section 31 and the small-threaded section 32; the small-threaded connector 1 comprises a first connecting section 11, a first stop block 12 and a first threaded section 13 arranged from bottom to top, and the first threaded section 13 is threadedly matched with the small-threaded section 32; the large-threaded connector 2 comprises a second threaded section 21, a second stop block 22 and a second connecting section 23 arranged from bottom to top, and the second threaded section 21 is threadedly matched with the large-threaded section 31, the small-threaded connector 1 can only be screwed into the double-threaded nut 3 from the small-threaded section 32, and the large-threaded connector 2 can only be screwed into the double-threaded nut 3 from the large-threaded section 31, so that effective cooperation is realized and the small-threaded connector 1 and the large-threaded connector 2 are prevented from being installed reversely; the first stop block 12 and the second stop block 22 are arranged, so that the first stop block 12 or the second stop block 22 can be fixed by using a wrench, and the small-threaded connector 1 or the large-threaded connector 2 can be quickly tightened, and due to the pitch difference between the large-threaded section 31 and the small-threaded section 32, the small-threaded connector 1 and the large-threaded connector 2 are close to each other and press the high-temperature gasket 4 by relying on the force provided by the threads during the tightening process; the first connecting section 11 is connected with a pipeline on the SOFC system by welding, and the sealing at the connection with the pipeline is ensured.

[0017] The working principle of the embodiment is as follows: during installation, the first connecting section 11 of the small-threaded connector 1 is welded with a pipeline on the SOFC system, the small-threaded section 32 of the double-threaded nut 3 is screwed onto the small-threaded connector 1, the high-temperature gasket 4 is put into the double-threaded nut 3 from the large-threaded section 31, the large-threaded connector 2 is screwed into the large-threaded section 31 of the double-threaded nut 3, the distance between the large-threaded connector 2 and the small-threaded connector 1 is controlled, the first stop block 12 and the second stop block 22 are clamped by using a wrench, the large-threaded connector 2 is tightened with the double-threaded nut 3, the large-threaded connector 2 and the small-threaded connector 1 press the high-temperature gasket 4, and the sealing effect is achieved, the above installation process is convenient to operate, and the detachability of the pipeline is met; after the large-threaded connector 2, the small-threaded connector 1 and the double-threaded nut 3 are tightened, the occupied space is small, and the space of the SOFC system is more compact.

[0018] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, although the present application has been disclosed as above with a preferred embodiment, however, it is not intended to limit the present application, any person skilled in the art, without departing from the technical scheme of the present application, can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical scheme of the present application, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present application, all still belong to the scope of the technical scheme of the present application.

Claims

1. A high-temperature pipe quick coupling, characterized by: The application relates to a high-temperature sealing joint, which comprises a small-thread joint (1), a large-thread joint (2) and a double-thread nut (3), one end of the double-thread nut (3) is threadedly connected with the small-thread joint (1), the other end of the double-thread nut (3) is threadedly connected with the large-thread joint (2), a high-temperature gasket (4) is arranged between the small-thread joint (1) and the large-thread joint (2), and the small-thread joint (1) and the large-thread joint (2) extrude the high-temperature gasket (4) to achieve a sealing effect.

2. The high-temperature pipe quick coupling according to claim 1, characterized by: The double-thread nut (3) comprises a large-thread section (31) and a small-thread section (32), the pitch of the large-thread section (31) is larger than that of the small-thread section (32), and the basic small diameter of the large-thread section (31) is larger than the basic large diameter of the small-thread section (32).

3. The high-temperature pipe quick coupling according to claim 2, characterized by: The small-thread joint (1) comprises a first connecting section (11), a first stop block (12) and a first thread section (13) arranged from bottom to top, and the first thread section (13) is threadedly matched with the small-thread section (32); the large-thread joint (2) comprises a second thread section (21), a second stop block (22) and a second connecting section (23) arranged from bottom to top, and the second thread section (21) is threadedly matched with the large-thread section (31).

4. The high-temperature pipe quick coupling according to claim 3, characterized by: The first connecting section (11) is connected with a pipeline on a SOFC system through welding.

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