CN213871542U

CN213871542U - A high temperature pipeline socket type compensation seal assembly with lining

Info

Publication number: CN213871542U
Application number: CN202022403811.XU
Authority: CN
Inventors: 吴传国; 周建国; 马广斌
Original assignee: Gansu Zhuding Construction Co ltd
Current assignee: Jiugang Group Gansu Engineering Technology Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-08-03
Anticipated expiration: 2030-10-26

Abstract

The utility model relates to a device for connecting high-temperature pipelines, in particular to a high-temperature pipeline socket-type compensation sealing assembly with an inner lining. A high-temperature refractory fiber felt is sandwiched between the flange connection end faces, the two flanges are fixedly connected by bolts and nuts, and also includes a socket and socket short pipe. The end face of the refractory insulation layer is lower than the flange connection end face, and the socket and socket short pipe clamps It is installed between the refractory insulation layers of the two pipes, and a refractory fiber felt gasket is sandwiched between the two ends of the socket short pipe and the refractory insulation layer. The inner wall of the refractory insulation layer and the inner wall of the socket short pipe form a gas passage. Simple, good sealing effect, can effectively compensate the thermal expansion of the pipeline, prevent the leakage of flue gas, and improve the service life.

Description

Socket type compensation sealing assembly with lining for high-temperature pipeline

Technical Field

The utility model relates to a device is used in the connection of high temperature pipeline, concretely relates to take high temperature pipeline socket joint formula compensation seal assembly of inside lining.

Background

The existing connection mode of the high-temperature flue gas pipeline with the lining is flange connection generally, asbestos or high-aluminum refractory fiber felt is adopted as sealing filler between flanges, the problem of frequent leakage exists in the simple connection, and therefore a special compensator for absorbing thermal expansion of the pipeline must be arranged on the pipeline, but the problem of leakage caused by frequent breakage of the compensator is caused, and the problems of environmental pollution and resource waste are caused.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists among the above-mentioned prior art, the utility model aims at providing a take high temperature pipeline socket joint formula compensation seal assembly of inside lining, simple structure, it is sealed effectual, receive the thermal energy to the pipeline and effectively compensate, prevent that the flue gas from revealing, promote life, solved the problem that exists among the prior art.

The utility model adopts the technical proposal that: the utility model provides a take high temperature pipeline socket joint formula compensation seal assembly of inside lining, includes the pipeline, and pipeline inner wall is equipped with fire-resistant heat preservation, and two pipe connection departments are equipped with the flange, press from both sides between two flange joint terminal surfaces and be equipped with high temperature fire-resistant fibre felt, and two flanges pass through bolt and nut fixed connection, still include the socket stub pipe, fire-resistant heat preservation terminal surface be less than the flange joint terminal surface, the socket stub pipe is pressed from both sides and is equipped with fire-resistant fibre felt packing ring between the fire-resistant heat preservation of two pipelines, fire-resistant heat preservation inner wall and socket stub pipe inner wall formation gas passage.

Furthermore, fire-resistant fiber cloth is clamped between the outer wall of the socket short pipe and the inner wall of the pipeline.

Further, the thickness of the high-temperature refractory fiber felt is twice of that of the refractory fiber felt gasket.

Furthermore, the diameter of the inner ring of the socket short pipe is the same as that of the inner ring of the fireproof heat-insulating layer, and the socket short pipe and the fireproof heat-insulating layer are on the same central axis.

And furthermore, the diameter of the inner ring of the refractory fiber felt gasket is not more than that of the inner ring of the socket short pipe, and the outer wall of the refractory fiber felt gasket is attached to the inner wall of the pipeline.

Furthermore, the material of the socket short pipe is the same as that of the fireproof heat-insulating layer.

The utility model has the advantages that:

1. the traditional single-plane sealing mode is changed, a plurality of combined seals are formed, the sealing capacity is improved, and smoke leakage is prevented;

2. the method of using a compensator in the traditional technology is changed for compensation, and the compensation after the pipeline is heated and expanded is formed by using the refractory fiber felt gasket and the high-temperature refractory fiber felt, so that the pipeline is prevented from being deformed;

3. the structure is simple, the installation and the disassembly are facilitated, the replacement of the refractory fiber felt gasket, the high-temperature refractory fiber felt and the refractory fiber cloth is facilitated, and the service life of the whole body is prolonged;

4. low material cost, easy processing and good economic benefit.

Drawings

Fig. 1 is a schematic view of the semi-section structure of the utility model.

In the figure: 1. the heat-insulating pipe comprises a pipeline, 2, a fire-resistant heat-insulating layer, 3, a flange, 4, a high-temperature fire-resistant fiber felt, 5, a short receiving pipe, 6, a fire-resistant fiber felt gasket and 7, fire-resistant fiber cloth.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:

a socket type compensation sealing assembly for a high-temperature pipeline with a lining comprises pipelines 1, wherein a fire-resistant heat-insulation layer 2 is arranged on the inner wall of each pipeline 1, flanges 3 are arranged at the joint of the two pipelines 1, a high-temperature fire-resistant fiber felt 4 is clamped between the connecting end faces of the two flanges 3, the two flanges 3 are fixedly connected through bolts and nuts, the socket short pipe 5 is further included, the end face of the fire-resistant heat-insulation layer 2 is lower than the connecting end face of the flanges 3, the socket short pipe 5 is clamped between the fire-resistant heat-insulation layers 2 of the two pipelines 1, fire-resistant fiber felt gaskets 6 are clamped between the two ends of the socket short pipe 5 and the fire-resistant heat-insulation layer 2, a gas passage is formed by the inner wall of the fire-resistant heat-insulation layer 2 and the inner wall of the socket short pipe 5, the traditional single-layer sealing mode is changed into a multi-layer sealing mode, the fire-resistant fiber felt gaskets 6 between the socket short pipe 5 and the fire-insulation layer 2 form a first seal, and the high-temperature fire-resistant fiber felt 4 between the two flanges 3 form a second seal, the multilayer is sealed to have guaranteed sealed effect, simultaneously owing to increased two refractory fiber felt gaskets 6, refractory fiber felt gasket 6 is softer than other spare parts materials, can form the compensation to the deformation volume when other spare parts are heated and expand, has increased the compensation volume, can more effectually prevent whole deformation inefficacy to prevent that the flue gas from revealing.

Further between 5 outer walls of socket joint nozzle stub and the 1 inner wall of pipeline press from both sides and be equipped with fire-resistant fiber cloth 7, increase fire-resistant fiber cloth 7 and increase one sealed promptly again, convert the multilayer sealing mode into labyrinth seal, can more effectual promotion sealed effect.

Further the thickness of the high temperature fire-resistant fiber felt 4 is one time of the thickness of the fire-resistant fiber felt gasket 6, and the limitation on the thickness is increased, so that the thickness of the compensation interval at the inner part and the outer part of the pipeline is consistent, the deformation failure of the parts caused by the nonuniform acceptance of the parts inside and outside the parts during the deformation is prevented, meanwhile, the thicknesses of the high temperature fire-resistant fiber felt 4 and the fire-resistant fiber felt gasket 6 can be adjusted according to the actual conditions (such as the pipeline working environment, the thickness degree of the pipeline and the like), the compensation amount of the parts during the high temperature deformation is adjusted, and the adaptability is stronger.

Further, the diameter of the inner ring of the socket short pipe 5 is the same as that of the inner ring of the fireproof heat-insulating layer 2, and the diameter of the inner ring of the socket short pipe 5 is limited on the same central axis of the socket short pipe 5 and the fireproof heat-insulating layer 2 so as to ensure that the flue gas can smoothly circulate and prevent local overheating caused by the stagnation of the flue gas.

Further the diameter of the inner ring of the refractory fiber felt gasket 6 is not more than that of the inner ring of the socket short pipe 5, the outer wall of the refractory fiber felt gasket 6 is attached to the inner wall of the pipeline 1, sealing is guaranteed, and meanwhile the refractory fiber felt gasket 6 is guaranteed not to influence the liquidity of the flue.

Further the material of socket pipe 5 is the same with the material of fire-resistant heat preservation 2, utilizes the characteristic of same material, guarantees that the deflection of socket pipe 5's material and fire-resistant heat preservation 2 under the condition of being heated is always, avoids under the different materials deflection different and lead to sealed inefficacy.

The use method of the socket type compensation sealing assembly of the high-temperature pipeline with the lining comprises the following steps:

A. putting the refractory fiber felt gasket 6 into a pipeline 1, and attaching the refractory fiber felt gasket 6 to the inner wall of the pipeline 1 and the end face of the refractory insulating layer 2;

B. winding the refractory fiber cloth 7 on the outer wall of the socket short pipe 5, ensuring that the socket short pipe 5 can be smoothly inserted into the pipeline 1 to the bottom due to the thickness of the refractory fiber cloth 7, and ensuring that the refractory fiber cloth 7 is tightly attached to the inner wall of the pipeline 1;

C. sleeving a high-temperature refractory fiber felt 4 on a socket short pipe 5, then placing a refractory fiber felt gasket 6 into another pipeline 1, enabling the refractory fiber felt gasket 6 to be attached to the inner wall of the pipeline 1 and the end face of a refractory heat-insulating layer 2, sleeving another pipeline 1 on the socket short pipe 5, and finally fixedly connecting two flanges 3 by using bolts and nuts.

Claims

1. A socket type compensation sealing assembly for a high-temperature pipeline with a lining comprises pipelines (1), wherein a fire-resistant heat-insulating layer (2) is arranged on the inner wall of each pipeline (1), a flange (3) is arranged at the joint of the two pipelines (1), a high-temperature fire-resistant fiber felt (4) is clamped between the connecting end faces of the two flanges (3), and the two flanges (3) are fixedly connected through bolts and nuts;

the method is characterized in that: still include socket stub pipe (5), fire-resistant heat preservation (2) terminal surface be less than flange (3) connection terminal surface, socket stub pipe (5) press from both sides and are adorned between fire-resistant heat preservation (2) of two pipelines (1), socket stub pipe (5) both ends and fire-resistant heat preservation (2) between press from both sides and be equipped with fire-resistant fiber felt packing (6), fire-resistant heat preservation (2) inner wall and socket stub pipe (5) inner wall form the gas passage.

2. The lined socket compensation seal assembly for high temperature pipes of claim 1, wherein: and a refractory fiber cloth (7) is clamped between the outer wall of the socket short pipe (5) and the inner wall of the pipeline (1).

3. The lined socket compensation seal assembly for high temperature pipes of claim 1, wherein: the thickness of the high-temperature refractory fiber felt (4) is twice of that of the refractory fiber felt gasket (6).

4. The lined socket compensation seal assembly for high temperature pipes of claim 1, wherein: the diameter of the inner ring of the socket short pipe (5) is the same as that of the inner ring of the fireproof heat-insulating layer (2), and the socket short pipe (5) and the fireproof heat-insulating layer (2) are on the same central axis.

5. The lined socket compensation seal assembly for high temperature pipes of claim 1, wherein: the diameter of the inner ring of the refractory fiber felt gasket (6) is not more than that of the inner ring of the socket short pipe (5), and the outer wall of the refractory fiber felt gasket (6) is attached to the inner wall of the pipeline (1).

6. The lined, high temperature pipe socket compensation seal assembly of any one of claims 1-5, wherein: the socket short pipe (5) is made of the same material as the fireproof heat-insulating layer (2).