CN203797622U

CN203797622U - Sealing structure used at the position of wall penetration of boiler header

Info

Publication number: CN203797622U
Application number: CN201420144601.5U
Authority: CN
Inventors: 张春华; 唐志钢; 王丽梅
Original assignee: Wuxi Huaguang Boiler Co Ltd
Current assignee: Wuxi Huaguang Boiler Co Ltd
Priority date: 2014-03-28
Filing date: 2014-03-28
Publication date: 2014-08-27
Anticipated expiration: 2024-03-28

Abstract

The utility model provides a sealing structure used at the position of wall penetration of a boiler header. The sealing structure comprises a pipeline, a steel plate casing and an expansion joint, the inner side of the expansion joint clings to the outer side of the steel plate casing, and the pipeline penetrates the steel plate casing and the expansion joint. The sealing structure is characterized in that the expansion joint is an expansion joint of a rectangular structure specifically and is formed by splicing at least two groups of V-shaped sheets, the sections of each group of V-shaped sheets are spliced with one another to form a totally-enclosed rectangular structure, the adjacent two groups of V-shaped sheets are welded and connected to form the integral expansion joint, an end plate is welded and connected to the outer end face of the expansion joint, a through hole is formed in the center of the end plate, and an inner steel plate and an outer steel plate are disposed on two sides of the end plate respectively. Axial expansion and thermal expansion of the pipeline can be guaranteed, service life of the expansion joint is ensured, and cost of the expansion joint is lowered.

Description

A kind of hermetically-sealed construction for boiler header place through walls

Technical field

The utility model relates to the technical field of boiler structure, is specially a kind of hermetically-sealed construction for boiler header place through walls.

Background technology

Boiler adopts steel plate case to add the fixing structure of circular expander joint structure for the hermetically-sealed construction at boiler header place through walls at present, sees Fig. 1.Under boiler operatiopn state, the wall feed-through pipeline of boiler header produces and expands, comprise that pipeline axial expands and the thermal expansion amount of pipeline, the fastening location of external endplate that in Fig. 1, the exposed junction of pipeline saves by circular expander, the thermal expansion amount of pipeline makes circumferential expansion meeting that circular expander joint is torn, and existing circular expander joint is the stainless steel circular expander joint of outsourcing, and expansion joint axial dimension is large, causes the cost of whole expansion joint high.

Summary of the invention

For the problems referred to above, the utility model provides a kind of hermetically-sealed construction for boiler header place through walls, and it can guarantee that pipeline axial expands and the thermal expansion amount of pipeline, the service life that makes to guarantee expansion joint, and the cost of reduction expansion joint.

A kind of hermetically-sealed construction for boiler header place through walls, its technical scheme is such: it comprises pipeline, steel plate case, expansion joint, the outside of described steel plate case is close in the inner side of described expansion joint, described pipeline runs through described steel plate case, expansion joint, it is characterized in that: described expansion joint is specially rectangular configuration expansion joint, described expansion joint forms at least two group V-arrangement thin plate splicings, the cross section of every group of V-type thin plate is spliced to form mutually the rectangular configuration of surrounding sealing, two groups of adjacent V-arrangement plate sheet welding are connected to form the described expansion joint of entirety, the outer face of described expansion joint has been welded to connect end plate, the center of described end plate is provided with through hole, the both sides of described end plate are furnished with respectively inner side steel plate, outside steel plate, described inner side steel plate, the correspondence position of outside steel plate has connecting hole, described pipeline runs through respectively after corresponding connecting hole welding respectively and is fastenedly connected inner side steel plate, outside steel plate, described inner side steel plate, between the peripheral surface of outside steel plate, clamp the outward flange position of the profile of the described end plate that described through hole is corresponding, described pipeline runs through corresponding described through hole, between the edge wheel profile of the outer rim anchor ring of described pipeline and the corresponding end plate of described through hole, leave gap.

It is further characterized in that: the diameter of the corresponding pipeline through hole of described steel plate case is greater than the diameter of described pipeline, and the outer rim anchor ring of described pipeline leaves gap between the corresponding steel plate case of described pipeline through hole edge wheel profile;

The lateral surface of described inner side steel plate is close to the medial surface of the described end plate of correspondence position, and the medial surface of described outside steel plate is close to the lateral surface of the described end plate of correspondence position.

Adopt after structure of the present utility model, the inner side of the pipeline at the place through walls of boiler header is fixed, pipeline outer fix runs through steel plate case, expansion joint, inner side steel plate, end plate, outside steel plate successively, adopt steel plate case to add the expansion joint that simple V-arrangement thin plate splicing becomes, clamp the inside and outside slide block hermetically-sealed construction of side of end plate with inner side steel plate, outside steel plate, this hermetically-sealed construction cost is low, structure is very simple, can bear the vertical three-dimensional free wxpansion of boiler tubing case, it can guarantee that pipeline axial expands and the thermal expansion amount of pipeline, the service life that makes to guarantee expansion joint; And because the cross section of every group of V-type thin plate is spliced to form mutually the rectangular configuration that surrounding is sealed, two groups of adjacent V-arrangement plate sheet welding are connected to form the described expansion joint of entirety, and expansion joint can adopt V-type thin plate splicing, self manufacture, reduce the cost of expansion joint.

Brief description of the drawings

Fig. 1 is the schematic diagram of the hermetically-sealed construction at existing boiler header place through walls;

Fig. 2 is front view structural representation of the present utility model;

Fig. 3 is the right view structural representation of Fig. 2;

Fig. 4 is the cross section structure schematic diagram of the V-arrangement thin plate of expansion joint of the present utility model.

Detailed description of the invention

See Fig. 2～Fig. 4, it comprises pipeline 1, steel plate case 2, expansion joint 3, the outside of steel plate case 2 is close in the inner side of expansion joint 3, pipeline 1 runs through steel plate case 2, expansion joint 3, expansion joint 3 is specially rectangular configuration expansion joint, expansion joint is spliced at least two group V-arrangement thin plates 4, the cross section of every group of V-type thin plate 4 is spliced to form mutually the rectangular configuration of surrounding sealing, two groups of adjacent V-arrangement plate sheet welding are connected to form overall expansion joint, the outer face of expansion joint 3 has been welded to connect end plate 5, the center of end plate 5 is provided with through hole 6, the both sides of end plate 5 are furnished with respectively inner side steel plate 7, outside steel plate 8, inner side steel plate 7, the correspondence position of outside steel plate 8 has connecting hole, pipeline 1 runs through respectively after corresponding connecting hole welding respectively and is fastenedly connected inner side steel plate 7, outside steel plate 8, inner side steel plate 7, between the peripheral surface of outside steel plate 8, clamp the outward flange position of the profile of the end plate 5 of through hole 6 correspondences, pipeline 1 runs through corresponding through hole 6, between the edge wheel profile of the outer rim anchor ring of pipeline 1 and the corresponding end plate 5 of through hole 6, leave gap.

The diameter of the corresponding pipeline through hole 9 of steel plate case 2 is greater than the diameter of pipeline 1, and the outer rim anchor ring of pipeline 1 leaves gap between the edge wheel profile of the corresponding steel plate case 2 of pipeline through hole 9; The lateral surface of inner side steel plate 7 is close to the medial surface of the end plate 5 of correspondence position, and the medial surface of outside steel plate 8 is close to the lateral surface of the end plate 5 of correspondence position.

Claims

1. the hermetically-sealed construction for boiler header place through walls, it comprises pipeline, steel plate case, expansion joint, the outside of described steel plate case is close in the inner side of described expansion joint, described pipeline runs through described steel plate case, expansion joint, it is characterized in that: described expansion joint is specially rectangular configuration expansion joint, described expansion joint forms at least two group V-arrangement thin plate splicings, the cross section of every group of V-type thin plate is spliced to form mutually the rectangular configuration of surrounding sealing, two groups of adjacent V-arrangement plate sheet welding are connected to form the described expansion joint of entirety, the outer face of described expansion joint has been welded to connect end plate, the center of described end plate is provided with through hole, the both sides of described end plate are furnished with respectively inner side steel plate, outside steel plate, described inner side steel plate, the correspondence position of outside steel plate has connecting hole, described pipeline runs through respectively after corresponding connecting hole welding respectively and is fastenedly connected inner side steel plate, outside steel plate, described inner side steel plate, between the peripheral surface of outside steel plate, clamp the outward flange position of the profile of the described end plate that described through hole is corresponding, described pipeline runs through corresponding described through hole, between the edge wheel profile of the outer rim anchor ring of described pipeline and the corresponding end plate of described through hole, leave gap.

2. a kind of hermetically-sealed construction for boiler header place through walls according to claim 1, it is characterized in that: the diameter of the corresponding pipeline through hole of described steel plate case is greater than the diameter of described pipeline, the outer rim anchor ring of described pipeline leaves gap between the corresponding steel plate case of described pipeline through hole edge wheel profile.

3. a kind of hermetically-sealed construction for boiler header place through walls according to claim 1 and 2, it is characterized in that: the lateral surface of described inner side steel plate is close to the medial surface of the described end plate of correspondence position, the medial surface of described outside steel plate is close to the lateral surface of the described end plate of correspondence position.