CN212804754U - Sealing structure for braided fabric expansion joint - Google Patents
Sealing structure for braided fabric expansion joint Download PDFInfo
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- CN212804754U CN212804754U CN202021229671.2U CN202021229671U CN212804754U CN 212804754 U CN212804754 U CN 212804754U CN 202021229671 U CN202021229671 U CN 202021229671U CN 212804754 U CN212804754 U CN 212804754U
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Abstract
The utility model discloses a seal structure for knitting expansion joint, including knitting expansion joint body, the top and the bottom of knitting expansion joint body are provided with turn-ups flange and turn-ups flange down respectively, go up turn-ups flange and turn-ups flange down and be used for being connected with the pipe opening part, go up the turn-ups flange with the turn-ups flange passes through bolt fixed connection with two relative flanges of pipe connection department respectively down, go up the turn-ups flange with the bolt hole department of turn-ups flange is provided with seal structure down, and seal structure is used for preventing that gas from leaking from the bolt connection department. The sealing structure is an I-shaped ring, the sealing structure in the utility model is an I-shaped ring, and the gas at the joint of the expansion joint of the sealing structure and the flange does not leak outwards, thus solving the problem of gas leakage of the existing sealing ring; the outer heat-insulating layer, the inner heat-insulating layer and the flange are adsorbed by magnets, so that heat is prevented from being dissipated, and the braided fabric expansion joint body is not blocked when the outer heat-insulating layer and the inner heat-insulating layer deform.
Description
Technical Field
The utility model relates to a sealed field, especially a seal structure for knitting expansion joint.
Background
An expansion joint refers to a flexible element that effectively functions to compensate for axial deformation. For example, the expansion joint welded on the shell of the fixed tube-plate heat exchanger has large axial flexibility and easy deformation, can compensate the thermal expansion difference generated by the tube and the shell due to different wall temperatures, and reduces the axial load of the tube and the shell, thereby reducing the temperature difference stress of the tube, the tube plate and the shell and avoiding causing strength damage, instability damage and tube pull-out damage. The expansion joints are of various types and commonly have structures such as wave shapes, ring plate welding, clamping shells and the like.
The fabric expansion joint is also called as a fiber fabric expansion joint and a fabric compensator and mainly comprises fiber fabrics, rubber and other high-temperature resistant materials. Can compensate the vibration of the running of the fan and the air pipe and the deformation of the pipeline. The fiber fabric expansion joint can compensate products such as axial, transverse and angular products, has the characteristics of no thrust, simplified support design, corrosion resistance, high temperature resistance, noise elimination and vibration reduction and the like, and is particularly suitable for hot air pipelines and smoke dust pipelines of power plants. The fiber fabric and the heat insulation cotton in the knitted fabric expansion joint have the functions of sound absorption and vibration isolation, and can effectively reduce the noise and vibration of systems such as a boiler, a fan and the like.
The knitted fabric expansion joint has the advantages of high-temperature gas and large offset. The sealing washer is set up to through-hole both sides on the expansion joint when the flange of current knitting expansion joint and pipeline opening part is connected, as shown in the latter half of figure 4, in the use, often can appear leaking gas phenomenon, can appear after long live time even that the sealing washer is extruded and breaks away from the bolt, does not play sealed effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem, a seal structure for braided fabric expansion joint has been designed.
Realize above-mentioned purpose the technical scheme of the utility model be, a seal structure for braided fabric expansion joint, including the braided fabric expansion joint body, the top and the bottom of braided fabric expansion joint body are provided with turn-ups flange and turn-ups flange down respectively, go up turn-ups flange and turn-ups flange down and be used for being connected with the pipe opening part, go up the turn-ups flange with turn-ups flange passes through bolt fixed connection with two relative flanges of pipe connection department respectively down, go up the turn-ups flange with the bolt hole department of turn-ups flange is provided with seal structure down, and seal structure is used for preventing that gas from leaking from the bolt connection department, seal structure's shape is the I-shaped circle.
The sealing structure comprises an upper sealing ring, a lower sealing ring and a sealing ring, wherein the upper sealing ring and the lower sealing ring are respectively arranged at the top end and the bottom end of the sealing ring, and the upper sealing ring, the lower sealing ring and the sealing ring are integrally arranged.
The centers of the upper sealing ring, the lower sealing ring and the sealing ring are provided with through holes.
The sealing structure is arranged in the bolt hole of the upper flanging flange or the lower flanging flange in a penetrating mode, the upper sealing ring and the lower sealing ring are respectively contacted with the upper surface and the lower surface of the upper flanging flange or the lower flanging flange, and the sealing ring is contacted with the inner wall of the bolt hole of the upper flanging flange or the lower flanging flange.
The knitted fabric expansion joint body comprises a knitted fabric layer and a covering layer, wherein the covering layer is arranged outside the knitted fabric layer.
An outer heat-insulating layer and an inner heat-insulating layer are sequentially arranged on the inner wall of the braided fabric expansion joint body.
The outer heat-insulating layer and the inner heat-insulating layer are composed of heat-insulating materials and wire meshes wrapping the heat-insulating materials, the top and the bottom of the outer heat-insulating layer and the top and the bottom of the inner heat-insulating layer are respectively in contact with the two opposite flanges at the joint of the pipeline, the top and the bottom of the outer heat-insulating layer and the top and the bottom of the inner heat-insulating layer are provided with magnets, and the flanges are provided with magnets which are adsorbed by the magnets.
Pressing strips are arranged below the upper flanging flange and above the lower flanging flange.
The bolt sequentially penetrates through the pressing strip, the upper flanging flange and the flange.
The bolt penetrates through the pressing strip, the lower flanging flange and the flange in sequence.
Utilize the utility model discloses a seal structure for knitting expansion joint of technical scheme preparation, its advantage lies in: 1. the sealing structure is an I-shaped ring, and as shown in fig. 4, gas at the joint of the upper flange or the lower flange of the sealing structure and the flange of the pipeline cannot leak outwards. The problem of the gas leakage that the sealing washer that current expansion joint used appears is solved. 2. The outer heat preservation with the top and the bottom of interior heat preservation pass through magnet phase with two relative flanges of pipeline and adsorb, and outer heat preservation and interior heat preservation can prevent that the heat from giving off from the flange, and outer heat preservation with interior heat preservation can not block up the inside passageway of braided fabric expansion joint body when producing deformation such as skew.
Drawings
Fig. 1 is a schematic structural view of a sealing structure for a braid expansion joint according to the present invention;
FIG. 2 is a plan view of A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a braid expansion joint body and seal structure of a seal structure for a braid expansion joint of the present invention;
FIG. 4 is a view showing a sealing structure of a conventional braid expansion joint and a sealing structure for a braid expansion joint according to the present invention in use;
FIG. 5 is a schematic view of a seal configuration of the seal configuration for a braid expansion joint in accordance with the present invention;
in the figure, 1, a braided fabric expansion joint body; 2. an upper flanging flange; 3. a lower flanging flange; 4. a flange; 5. a bolt; 6. a sealing structure; 7. an upper sealing ring; 8. a lower seal ring; 9. a seal ring; 10. A through hole; 11. weaving a fabric layer; 12. a covering layer; 13. an outer insulating layer; 14. an inner insulating layer; 15. A magnet; 16. a magnet II; 17. and (7) pressing strips.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings, and as shown in fig. 1 to 5, a sealing structure for a knitted fabric expansion joint includes a knitted fabric expansion joint body 1, the knitted fabric expansion joint body 1 includes a knitted fabric layer 11 and a covering layer 12, and the covering layer 12 is disposed outside the knitted fabric layer 11. The covering layer 12 is made of a high-strength sealing composite material. The covering layer is made of high-strength sealing composite materials and prevents gas leakage. The woven fabric layer is a high-temperature-resistant fabric and has the advantages of high temperature resistance, corrosion resistance and large offset.
The fabric expansion joint comprises a fabric expansion joint body 1 and is characterized in that an upper flanging flange 2 and a lower flanging flange 3 are respectively arranged at the top and the bottom of the fabric expansion joint body 1, the upper flanging flange 2 and the lower flanging flange 3 are respectively and fixedly connected with two opposite flanges 4 at the joint of a pipeline through bolts 5, a sealing structure 6 is arranged at the bolt hole positions of the upper flanging flange 2 and the lower flanging flange 3, and the sealing structure 6 is in an I-shaped ring shape.
The centers of the upper sealing ring 7, the lower sealing ring 8 and the sealing ring 9 are provided with through holes 10. The bolt 5 passes through the through hole 10.
The sealing structure 6 is arranged in the bolt hole of the upper flange 2 or the lower flange 3 in a penetrating manner, the upper sealing ring 7 and the lower sealing ring 8 are respectively contacted with the upper surface and the lower surface of the upper flange 2 or the lower flange 3, and the sealing ring 9 is contacted with the inner wall of the bolt hole of the upper flange 2 or the lower flange 3.
An outer heat-insulating layer 13 and an inner heat-insulating layer 14 are sequentially arranged on the inner wall of the body of the knitted fabric expansion joint body 1. The fabric expansion joint body 1 is generally used in a high-temperature environment, and the arrangement of the outer insulating layer 13 and the inner insulating layer 14 can prevent heat from being dissipated from the side wall of the fabric expansion joint body 1, and prevent the performance of the fabric expansion joint body 1 from being reduced and the service life of the fabric expansion joint body from being reduced when the fabric expansion joint body is in a high-temperature state for a long time. In addition, the outer insulating layer 13 and the inner insulating layer 14 are in contact with the flange 4, so that heat can be prevented from being radiated from the flange 4 connected to the upper flange 2 or the lower flange 3.
The outer insulating layer 13 and the inner insulating layer 14 are made of insulating materials and wire meshes wrapping the insulating materials, the insulating materials are materials with strong plasticity and good insulating effect, such as insulating cotton, and the wire meshes are high-temperature resistant materials. The top and bottom of the outer insulation layer 13 and the inner insulation layer 14 are respectively in contact with the two opposite flanges 4 at the joint of the pipeline, but the outer insulation layer 13 and the inner insulation layer 14 are inclined if the braid expansion joint body 1 is inclined. In order to prevent the passage inside the fabric expansion joint body 1 from being blocked when the outer insulating layer 13 and the inner insulating layer 14 are inclined, magnets 15 are arranged at the top and the bottom of the outer insulating layer 13 and the inner insulating layer 14, and a second magnet 16 adsorbed with the magnets 15 is arranged on the flange 4. Magnet 15 and No. two magnet 16 adsorb mutually, and the outer heat preservation 13 with the deformation degree of interior heat preservation 14 is less, fine avoided outer heat preservation 13 with interior heat preservation 14 blocks up the inside passageway of fabric expansion joint body 1.
And pressing strips 17 are arranged below the upper flanging flange 2 and above the lower flanging flange 3. The bolt 5 sequentially penetrates through the pressing strip 17, the upper flanging flange 2 and the flange 4. The pressing strip 17 is used for preventing a gap from being formed between the upper flanging flange 2 and the flange 4 when the upper flanging flange and the flange are fixed, and further preventing air leakage.
The bolt 5 sequentially penetrates through the pressing strip 17, the lower flanging flange 3 and the flange 4. The hold-down strip 17 is used for preventing a gap from being formed between the flange 3 and the flange 4 when the flange is fixed, and further preventing air leakage.
In fig. 4, the upper half is a diagram showing a state of use of the braid expansion joint using the seal structure 6, and the lower half is a diagram showing a state of use of the braid expansion joint using a general packing, and arrows indicate a moving direction of gas.
The advantages of this embodiment are: 1. the sealing structure 6 is an I-shaped ring and comprises an upper sealing ring 7, a lower sealing ring 8 and a sealing ring 9, the upper sealing ring 7, the lower sealing ring 8 and the sealing ring 9 are integrally arranged, the sealing structure 6 penetrates through bolt holes of the upper flanging flange 2 and the lower flanging flange 3, the upper sealing ring 7 and the lower sealing ring 8 are respectively contacted with the upper side surface and the lower side surface of the upper flanging flange 2 or the lower flanging flange 3, and the sealing ring 9 is contacted with the bolt holes of the upper flanging flange 2 and the lower flanging flange 3. As shown in FIG. 4, the gas does not leak out at the connection position of the upper flange 2 or the lower flange 3 of the sealing structure 6 and the flange 4 of the pipeline. And place traditional sealing washer respectively in the both sides of last turn-ups flange 2 or turn-ups flange 3 down, the condition that can appear leaking gas, and under high temperature high pressure environment, traditional sealing washer can break away from bolt 5 to do not play sealed effect.
2. Outer heat preservation 13 with the top and the bottom of interior heat preservation 14 are provided with magnet 15, and magnet 15 adsorbs mutually with No. two magnets 16 on two relative flanges 4 of pipeline to guarantee outer heat preservation 13 with interior heat preservation 14 and flange 4 in close contact with, the heat preservation effect is better, and can also guarantee outer heat preservation 13 with interior heat preservation 14 can not plug up the inside passageway of knitting expansion joint body when producing deformation.
Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.
Claims (9)
1. The utility model provides a seal structure for braided fabric expansion joint, includes braided fabric expansion joint body (1), the top and the bottom of braided fabric expansion joint body (1) are provided with turn-ups flange (2) and turn-ups flange (3) down respectively, turn-ups flange (2) with turn-ups flange (3) down pass through bolt (5) fixed connection with two relative flanges (4) of pipe connection department respectively, its characterized in that, go up turn-ups flange (2) with the bolt hole department of turn-ups flange (3) down is provided with seal structure (6), the shape of seal structure (6) is the I-shaped circle.
2. The sealing structure for the knitted fabric expansion joint according to claim 1, wherein the sealing structure (6) comprises an upper sealing ring (7), a lower sealing ring (8) and a sealing ring (9), the upper sealing ring (7) and the lower sealing ring (8) are respectively arranged at the top end and the bottom end of the sealing ring (9), the upper sealing ring (7), the lower sealing ring (8) and the sealing ring (9) are integrally arranged, and a through hole (10) is formed in the centers of the upper sealing ring (7), the lower sealing ring (8) and the sealing ring (9).
3. The sealing structure for the fabric expansion joint according to claim 2, wherein the sealing structure (6) is arranged in bolt holes of the upper flange (2) or the lower flange (3) in a penetrating manner, the upper sealing ring (7) and the lower sealing ring (8) are respectively in contact with the upper surface and the lower surface of the upper flange (2) or the lower flange (3), and the sealing ring (9) is in contact with the inner walls of the bolt holes of the upper flange (2) or the lower flange (3).
4. A sealing structure for a braid expansion joint according to claim 1, wherein the body of the braid expansion joint body (1) comprises a braid layer (11), a cover layer (12), the cover layer (12) is arranged outside the braid layer (11), and the cover layer (12) is a high strength sealing composite material.
5. The sealing structure for the knitted fabric expansion joint is characterized in that an outer insulating layer (13) and an inner insulating layer (14) are sequentially arranged on the inner wall of the knitted fabric expansion joint body (1), and the outer insulating layer (13) and the inner insulating layer (14) are made of insulating materials and metal wire meshes wrapping the insulating materials.
6. A sealing structure for a braid expansion joint according to claim 5, wherein the top and bottom of the outer insulation layer (13) and the inner insulation layer (14) are respectively in contact with two opposite flanges (4) at the joint of the pipe, magnets (15) are arranged at the top and bottom of the outer insulation layer (13) and the inner insulation layer (14), and a second magnet (16) adsorbed with the magnets (15) is arranged on the flanges (4).
7. A sealing structure for a braid expansion joint according to claim 1, wherein beads (17) are provided below the turn-up flange (2) and above the turn-down flange (3).
8. A sealing structure for a braid expansion joint according to claim 7, wherein the bolt (5) passes through the bead (17), the upper flanged flange (2), the flange (4) in sequence.
9. A sealing structure for a braid expansion joint according to claim 7, wherein the bolt (5) passes through the bead (17), the turn-down flange (3) and the flange (4) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229671.2U CN212804754U (en) | 2020-06-29 | 2020-06-29 | Sealing structure for braided fabric expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229671.2U CN212804754U (en) | 2020-06-29 | 2020-06-29 | Sealing structure for braided fabric expansion joint |
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| Publication Number | Publication Date |
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| CN212804754U true CN212804754U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021229671.2U Active CN212804754U (en) | 2020-06-29 | 2020-06-29 | Sealing structure for braided fabric expansion joint |
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| CN (1) | CN212804754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734911A (en) * | 2020-06-29 | 2020-10-02 | 天津西泰斯机械制造有限公司 | Sealing structure for braided fabric expansion joint |
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2020
- 2020-06-29 CN CN202021229671.2U patent/CN212804754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734911A (en) * | 2020-06-29 | 2020-10-02 | 天津西泰斯机械制造有限公司 | Sealing structure for braided fabric expansion joint |
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