CN215807081U - Metal expansion joint of boiler feed back device - Google Patents
Metal expansion joint of boiler feed back device Download PDFInfo
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- CN215807081U CN215807081U CN202121173193.2U CN202121173193U CN215807081U CN 215807081 U CN215807081 U CN 215807081U CN 202121173193 U CN202121173193 U CN 202121173193U CN 215807081 U CN215807081 U CN 215807081U
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- expansion joint
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- feed back
- boiler feed
- heat
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Abstract
The utility model relates to a metal expansion joint of a boiler feed back device, which comprises an upper pipeline, a lower pipeline and an expansion joint, wherein the top end of the expansion joint is fixedly connected with the upper pipeline through a flange, the bottom end of the expansion joint is fixedly connected with the lower pipeline through a flange, annular grooves are formed in the bottom end of the inner side of the upper pipeline and the top end of the inner side of the lower pipeline, annular plates are arranged in the annular grooves, an annular clamping groove is formed in one end face of each annular plate, the annular clamping groove in the annular plate in the inner side of the upper pipeline is arranged upwards, the annular clamping groove in the annular plate in the inner side of the lower pipeline is arranged downwards, annular clamping plates are fixedly connected to the upper pipeline and the lower pipeline, and the two annular clamping plates are respectively inserted into the corresponding annular clamping grooves. The utility model has the advantages of good sealing effect and continuous, safe and reliable operation.
Description
Technical Field
The utility model belongs to the technical field of expansion joints of boiler feed back devices, and particularly relates to a metal expansion joint of a boiler feed back device.
Background
The expansion joint is composed of a corrugated pipe and end pipes, a bracket, a flange, a conduit and other accessories which form a working main body of the expansion joint, belongs to a compensation element, utilizes the effective telescopic deformation of the corrugated pipe of the working main body to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion with heat and contraction with cold or compensate the axial, transverse and angular displacement of the pipelines, the conduits, the containers and the like, can also be used for noise reduction and vibration reduction, and has wide application in modern industry.
In the boiler feed back device pipeline, in order to prevent the pipeline from deforming or damaging due to thermal extension or temperature stress when the pipeline is heated, an expansion joint needs to be arranged on the pipeline to compensate the thermal extension of the pipeline so as to reduce the pressure of the pipe wall, but because the pipeline and the expansion joint of the feed back device work continuously under a high-temperature environment, the situations of sinking, serious deformation and the like can occur, so that the joint can not be aligned, the sealing property is reduced, dust is accumulated in the corrugated pipe, the service life is influenced, and simultaneously, greater potential safety hazards exist, therefore, the utility model provides the boiler feed back device metal expansion joint which has good sealing effect and can continuously, safely and reliably run.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides the metal expansion joint of the boiler feed back device, which has good sealing effect and can continuously, safely and reliably operate.
The technical scheme adopted by the utility model is as follows: a metal expansion joint of a boiler feed back device comprises an upper pipeline, a lower pipeline and an expansion joint, wherein the top end of the expansion joint is fixedly connected with the upper pipeline through a flange, the bottom end of the expansion joint is fixedly connected with the lower pipeline through a flange, annular grooves are formed in the inner bottom end of the upper pipeline and the inner top end of the lower pipeline respectively, annular plates are arranged in the annular grooves, one end faces of the annular plates are provided with annular clamping grooves, the annular clamping grooves in the annular plates in the upper pipeline are arranged upwards, the annular clamping grooves in the annular plates in the lower pipeline are arranged downwards, the upper pipeline and the lower pipeline are both fixedly connected with annular clamping plates, the two annular clamping plates are respectively inserted into the corresponding annular clamping grooves, heat-insulating pouring material layers are arranged at the top end of the inner wall and the bottom end of the inner wall of the expansion joint, and a heat-insulating layer is arranged in the corrugated pipe of the expansion joint, and wear-resistant layers are arranged on the inner walls of the heat-insulating pouring material layer and the heat-insulating layer.
Preferably, the inner wall of the annular plate protrudes out of the annular groove, and the protruding length of the annular plate is 1-3 cm.
Preferably, the bellows of the expansion joint is made of 0Cr18Ni10 Ti.
Preferably, the heat-insulating pouring material layer is a corundum pouring material layer, and the heat-insulating pouring material layer is fixed on the inner wall of the expansion joint through the claw nails.
Preferably, the heat-insulating layer is an aluminum silicate fiber blanket.
Preferably, the wear-resistant layer is made of 0Cr25Ni20Si 2.
The utility model has the beneficial effects that: according to the corrugated pipe joint, the annular plate, the annular clamping groove and the annular clamping plate are arranged in a matched mode, a certain fixing effect can be achieved on the upper pipeline and the lower pipeline, the deformation possibility of the joint is reduced, even if the joints are not aligned after deformation, the effect of sealing the staggered joints can be achieved due to the protruding design of the annular plate, and dust accumulation inside the corrugated pipe is prevented; through the design of the wear-resistant layer, the heat-insulating castable layer and the heat-insulating layer, the wear resistance and the high-temperature resistance of the expansion joint are improved, and high-temperature cracking and deformation are effectively prevented, so that the continuous safe operation of a boiler feed back device is kept.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the construction of the annular plate of the present invention.
In the figure: 1. the heat insulation and heat preservation device comprises an upper pipeline 2, a lower pipeline 3, an expansion joint 4, an annular groove 5, an annular plate 6, an annular clamping groove 7, an annular clamping plate 8, a heat insulation pouring material layer 9, a heat preservation layer 10, a wear-resistant layer 11 and claw nails.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention, and are specifically described below with reference to the embodiments.
Example 1
As shown in fig. 1 and 2, a metal expansion joint of a boiler feed back device comprises an upper pipeline 1, a lower pipeline 2 and an expansion joint 3, wherein the top end of the expansion joint 3 is fixedly connected with the upper pipeline 1 through a flange, the bottom end of the expansion joint 3 is fixedly connected with the lower pipeline 2 through a flange, annular grooves 4 are respectively formed in the inner bottom end of the upper pipeline 1 and the inner top end of the lower pipeline 2, annular plates 5 are arranged in the annular grooves 4, an annular clamping groove 6 is formed in one end face of each annular plate 5, the annular clamping groove 6 in the annular plate 5 in the upper pipeline 1 is arranged upwards, the annular clamping groove 6 in the annular plate 5 in the lower pipeline 2 is arranged downwards, annular clamping plates 7 are fixedly connected to the upper pipeline 1 and the lower pipeline 2, the two annular clamping plates 7 are respectively inserted into the corresponding annular clamping grooves 6, and heat insulation pouring material layers 8 are respectively arranged at the top end and the bottom end of the inner wall of the expansion joint 3, and a heat-insulating layer 9 is arranged in the corrugated pipe of the expansion joint 3, and wear-resistant layers 10 are arranged on the inner walls of the heat-insulating pouring material layer 8 and the heat-insulating layer 9.
According to the utility model, the annular plate 5 is arranged at the joints of the upper pipeline 1, the lower pipeline 2 and the expansion joint 3, so that the deformation possibility of the joints can be reduced, and even if the joints of the upper pipeline 1, the lower pipeline 2 and the expansion joint 3 are dislocated after deformation, the annular plate 5 can play a role in making up for the dislocation, the dislocated joints are sealed, and dust accumulation in the corrugated pipe is prevented, through the design of the wear-resistant layer 10, the heat-insulating pouring material layer 8 and the heat-insulating layer 9, the wear resistance and the high-temperature resistance of the expansion joint 3 are improved, and high-temperature cracking and deformation are effectively prevented, so that the continuous and safe operation of a boiler feed back device is maintained.
Example 2
As shown in fig. 1 and 2, a metal expansion joint of a boiler feed back device comprises an upper pipeline 1, a lower pipeline 2 and an expansion joint 3, wherein the top end of the expansion joint 3 is fixedly connected with the upper pipeline 1 through a flange, the bottom end of the expansion joint 3 is fixedly connected with the lower pipeline 2 through a flange, annular grooves 4 are respectively formed in the inner bottom end of the upper pipeline 1 and the inner top end of the lower pipeline 2, annular plates 5 are arranged in the annular grooves 4, an annular clamping groove 6 is formed in one end face of each annular plate 5, the annular clamping groove 6 in the annular plate 5 in the upper pipeline 1 is arranged upwards, the annular clamping groove 6 in the annular plate 5 in the lower pipeline 2 is arranged downwards, annular clamping plates 7 are fixedly connected to the upper pipeline 1 and the lower pipeline 2, the two annular clamping plates 7 are respectively inserted into the corresponding annular clamping grooves 6, and heat insulation pouring material layers 8 are respectively arranged at the top end and the bottom end of the inner wall of the expansion joint 3, and a heat-insulating layer 9 is arranged in the corrugated pipe of the expansion joint 3, and wear-resistant layers 10 are arranged on the inner walls of the heat-insulating pouring material layer 8 and the heat-insulating layer 9.
The inner wall of the annular plate 5 protrudes out of the annular groove 4, the protruding length of the annular plate is 1-3cm, and the protruding part of the annular plate 5 can still seal the interface under the condition that the interface is deformed to cause the misalignment, so that internal dust accumulation is prevented.
The corrugated pipe of the expansion joint 3 is made of 0Cr18Ni10Ti material.
The heat insulation pouring material layer 8 is a corundum pouring material layer, the heat insulation pouring material layer 8 is fixed on the inner wall of the expansion joint 3 through the claw nails 11, a good heat insulation effect is achieved, high-temperature cracking of the outer expansion joint 3 corrugated pipe is prevented, and meanwhile scalding of workers is avoided.
The heat-insulating layer 9 is an aluminum silicate fiber blanket, and has good heat-insulating effect.
The wear-resistant layer 10 is made of 0Cr25Ni20Si2 material, has good wear resistance, prevents the medium flowing inside the wear-resistant layer from wearing the inner wall of the expansion joint 3, and prolongs the service life.
According to the utility model, the annular plate 5 is arranged at the joints of the upper pipeline 1, the lower pipeline 2 and the expansion joint 3, so that the deformation possibility of the joints can be reduced, and even if the joints of the upper pipeline 1, the lower pipeline 2 and the expansion joint 3 are dislocated after deformation, the annular plate 5 can play a role in making up for the dislocation, the dislocated joints are sealed, and dust accumulation in the corrugated pipe is prevented, through the design of the wear-resistant layer 10, the heat-insulating pouring material layer 8 and the heat-insulating layer 9, the wear resistance and the high-temperature resistance of the expansion joint 3 are improved, and high-temperature cracking and deformation are effectively prevented, so that the continuous and safe operation of a boiler feed back device is maintained.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a boiler feed back ware metal expansion joint, includes upper tube way, lower pipeline and expansion joint, flange and upper tube way fixed connection are passed through on the top of expansion joint, flange and lower pipeline fixed connection are passed through to the bottom of expansion joint, its characterized in that: the inner side bottom of upper tube way, the inboard top of lower tube way have all seted up the ring channel, be provided with the annular slab in the ring channel, ring groove has been seted up to an end face of annular slab, the ring groove on the annular slab of upper tube way inboard sets up, the ring groove on the annular slab of lower tube way inboard sets up down, equal fixedly connected with annular cardboard on upper tube way, the lower tube way, two the annular cardboard is pegged graft respectively in corresponding ring groove, the inner wall top and the inner wall bottom of expansion joint all are provided with heat-insulating casting material layer, be provided with the heat preservation in the bellows of expansion joint, heat-insulating casting material layer and the inner wall of heat preservation are provided with the wearing layer.
2. The metal expansion joint of boiler feed back device of claim 1, wherein: the inner wall of the annular plate protrudes out of the annular groove, and the protruding length of the annular plate is 1-3 cm.
3. The metal expansion joint of boiler feed back device of claim 1, wherein: the corrugated pipe of the expansion joint is made of 0Cr18Ni10Ti material.
4. The metal expansion joint of boiler feed back device of claim 1, wherein: the heat-insulating pouring material layer is a corundum pouring material layer, and is fixed on the inner wall of the expansion joint through the claw nails.
5. The metal expansion joint of boiler feed back device of claim 1, wherein: the heat-insulating layer is an aluminum silicate fiber blanket.
6. The metal expansion joint of boiler feed back device of claim 1, wherein: the wear-resistant layer is made of 0Cr25Ni20Si 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121173193.2U CN215807081U (en) | 2021-05-28 | 2021-05-28 | Metal expansion joint of boiler feed back device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121173193.2U CN215807081U (en) | 2021-05-28 | 2021-05-28 | Metal expansion joint of boiler feed back device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215807081U true CN215807081U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121173193.2U Active CN215807081U (en) | 2021-05-28 | 2021-05-28 | Metal expansion joint of boiler feed back device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215807081U (en) |
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2021
- 2021-05-28 CN CN202121173193.2U patent/CN215807081U/en active Active
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