Nonmetal expansion joint

Abstract

The utility model discloses a nonmetal expansion joint which comprises a first flange, a second flange and a skin located between the first flange and the second flange, and the second flange comprises a second bottom plate, a first connecting plate, a transition plate, a second connecting plate and a second top plate. A first connecting plate is connected between the second bottom plate and the transition plate, and a second connecting plate is connected between the transition plate and the second top plate; the second top plate is further connected with a skin. According to the non-metal expansion joint, the structural strength of the second flange can be enhanced through the first connecting plate, the transition plate and the second connecting plate, so that when the non-metal expansion joint is in a long-term high-temperature working condition, the second flange is not prone to deformation, cracking and the like, and the service life of the second flange and the service life of the non-metal expansion joint are further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering components, in particular to a non-metallic expansion joint. Background Art

[0002] Non-metallic expansion joints have a wide range of applications, covering almost all industries that require temperature control and equipment protection. Through their unique material and structural designs, they effectively solve the problem of equipment protection in extreme environments such as high temperature and high pressure. At the same time, they also improve energy utilization efficiency and reduce energy waste.

[0003] The non-metallic expansion joint is equivalent to a compensation connection structure between two adjacent flue ducts or other pipeline systems. Both sides of the existing non-metallic expansion joints include flanges corresponding to the connection with the flue duct or other pipeline systems. Therefore, the design parameters such as the size and shape of the flanges need to match the corresponding flue duct or other pipeline systems. And there is often a special situation where the size of one side of the flue duct or other pipeline systems on both sides of the non-metallic expansion joint is much larger (higher) than that of the other side.

[0004] Therefore, the flanges also need to be set accordingly according to the above special situation, that is, the flange size on one side of the non-metallic expansion joint is much higher than that on the other side. However, such a setting will cause the flange on one side to be too high. Under the long-term high-temperature working conditions, the too-high flange is very likely to deform, crack, etc., thereby affecting the service life of the non-metallic expansion joint. Summary of the Utility Model

[0005] In view of this, the utility model provides a non-metallic expansion joint to solve the problem that when the flange on one side of the non-metallic expansion joint in the prior art is too high, it is easy to deform, crack, etc., thereby affecting the service life of the non-metallic expansion joint.

[0006] The technical solution of the utility model is a non-metallic expansion joint, which includes a first flange, a second flange and a skin located between the two. The second flange includes a second bottom plate, a first connecting plate, a transition plate, a second connecting plate and a second top plate;

[0007] A first connecting plate is connected between the second bottom plate and the transition plate, and a second connecting plate is connected between the transition plate and the second top plate; the second top plate is also connected with the skin.

[0008] Further, the second bottom plate, the first connecting plate and the transition plate can be connected to form a first "C"-shaped plate, and the opening of the first "C"-shaped plate faces away from the first flange.

[0009] Further, the second connecting plate is located in the middle of the side of the transition plate facing away from the second bottom plate.

[0010] Further, the transition plate, the second connecting plate, and the second top plate can be connected to form a second "C"-shaped plate, and the opening of the second "C"-shaped plate faces away from the first flange.

[0011] Further, the non-metallic expansion joint further includes a skin fixing pressing plate and a plurality of skin fasteners. The skin fixing pressing plate is located on the top of the second top plate, and one side of the skin is provided between the second top plate and the skin fixing pressing plate. A plurality of the skin fasteners sequentially pass through the skin fixing pressing plate, the skin, and the second top plate in the circumferential direction, so that the skin fixing pressing plate cooperates with the second top plate to press one side of the skin.

[0012] Further, a gap is formed between the end of each skin fastener and the corresponding transition plate.

[0013] Further, the skin fixing pressing plate, the second bottom plate, the first connecting plate, the transition plate, the second connecting plate, and the second top plate can respectively enclose to form an annular structure.

[0014] Further, the first flange includes a first bottom plate, a third connecting plate, and a first top plate;

[0015] The first bottom plate, the third connecting plate, and the first top plate can be connected to form a third "C"-shaped plate, and the opening of the third "C"-shaped plate faces away from the second flange;

[0016] And the other side of the skin is provided between the top of the first top plate and the skin fixing pressing plate. A plurality of the skin fasteners sequentially pass through the skin fixing pressing plate, the skin, and the first top plate in the circumferential direction, so that the skin fixing pressing plate cooperates with the first top plate to press the other side of the skin.

[0017] Further, a gap is formed between the end of each skin fastener and the corresponding first bottom plate.

[0018] Further, the first bottom plate, the third connecting plate, and the first top plate can respectively enclose to form an annular structure.

[0019] Compared with the prior art, the utility model has at least the following beneficial effects:

[0020] The utility model can strengthen the structural strength of the second flange through the first connecting plate, the transition plate and the second connecting plate. In this way, when the non-metallic expansion joint is in a long-term high-temperature working condition, even if the size of the second flange is larger than that of the first flange, the second flange is not likely to deform, crack, etc., thereby extending the service life of the second flange and the non-metallic expansion joint. Moreover, the first connecting plate, the transition plate and the second connecting plate can also increase the heat transfer path of the second flange, so that the temperature will decrease when it reaches the position of the skin surface, thereby improving the working conditions and service life of the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The terms "including" and "having" and any variations thereof in the description and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present utility model or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a partial cross-sectional view of the non-metallic expansion joint of the present utility model;

[0024] Figure 2 It is a partial structural schematic diagram of the non-metallic expansion joint of the present utility model;

[0025] Figure 3 For Figure 2 an enlarged schematic diagram of the reference numeral A in

[0026] Reference numerals:

[0027] 10. First flange; 101. First bottom plate; 102. Third connecting plate; 103. First top plate; 104. Third "C"-shaped plate;

[0028] 20. Second flange; 201. Second bottom plate; 202. First connecting plate; 203. Transition plate; 204. Second connecting plate; 205. Second top plate; 206. First "C"-shaped plate; 207. Second "C"-shaped plate;

[0029] 30, Skin;

[0030] 40, Skin fixing pressing plate;

[0031] 50, Skin fastener;

[0032] 60, Thermal insulation space. Specific implementation mode

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Thus, a feature pointed out in this specification will be used to illustrate one feature of one embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the feature described. In addition, it should be noted that this specification describes many features. Although some features may be combined to show possible system designs, these features may also be used in other combinations not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0034] The principle and structure of the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0035] The non-metallic expansion joint is equivalent to a compensation connection structure between two adjacent flues or other pipeline systems, and both sides of the existing non-metallic expansion joint include flanges correspondingly connected to the flue or other pipeline systems. Therefore, the design parameters such as the size and shape of the flanges need to match the corresponding flue or other pipeline systems, and there is often a special case where the size of one side of the flue or other pipeline systems on both sides of the non-metallic expansion joint is much larger (higher) than that of the other side.

[0036] Therefore, the flanges also need to be set accordingly according to the above special situation, that is, the flange size on one side of the non-metallic expansion joint is much higher than the flange size on the other side of the non-metallic expansion joint. However, such a setting will cause the flange on one side to be too high, and the too-high flange is likely to deform, crack, etc. under the long-term high-temperature working conditions, thereby affecting the service life of the flange and the non-metallic expansion joint.

[0037] Therefore, in view of the above problems, in one embodiment, referring to the attached Figure 1-2 , the present utility model provides a non-metallic expansion joint, which includes a first flange 10, a second flange 20 and a skin 30 located between the two. The second flange 20 includes a second bottom plate 201, a first connecting plate 202, a transition plate 203, a second connecting plate 204 and a second top plate 205;

[0038] A first connecting plate 202 is connected between the top of the second bottom plate 201 and the bottom of the transition plate 203, and a second connecting plate 204 is connected between the top of the transition plate 203 and the bottom of the second top plate 205; a skin 30 is further connected to the top of the second top plate 205.

[0039] In this way, through the transition plate 203, the original vertically arranged integral connecting plate is divided into multiple sections, namely the first connecting plate 202 and the second connecting plate 204. In the special case where the size of one side of the flue or other pipeline systems on both sides of the non-metallic expansion joint is higher than that of the other side, the second flange 20 of the non-metallic expansion joint is correspondingly connected to the flue or other pipeline system with a higher size. In this way, the structural strength of the second flange 20 can be enhanced through the first connecting plate 202, the transition plate 203 and the second connecting plate 204. When the non-metallic expansion joint is in a long-term high-temperature working condition, even if the size of the second flange 20 is higher than that of the first flange 10, the second flange 20 is not likely to deform, crack, etc., that is, the probability of the second flange 20 deforming, cracking, etc. is reduced, thereby extending the service life of the second flange 20 and the non-metallic expansion joint; moreover, the first connecting plate 202, the transition plate 203 and the second connecting plate 204 can also increase the heat transfer path of the second flange 20, so that the temperature will decrease when it reaches the surface position of the skin 30, thereby improving the working condition and service life of the skin 30.

[0040] Among them, to improve the stability of the second flange 20 and make the second flange 20 not likely to deform, crack, etc., referring to the attached Figure 1 and 3 , the second bottom plate 201, the first connecting plate 202 and the transition plate 203 can be connected to form a first "C"-shaped plate 206, and the opening of the first "C"-shaped plate 206 faces away from the first flange 10.

[0041] And to further improve the stability of the second flange 20 and make the second flange 20 not likely to deform, crack, etc., referring to the attached Figure 1 and 3 , the transition plate 203, the second connecting plate 204 and the second top plate 205 can be connected to form a second "C"-shaped plate 207, and the opening of the second "C"-shaped plate 207 faces away from the first flange 10.

[0042] Among them, referring to the attached Figure 1 and 3 , the second connecting plate 204 is located in the middle of the side of the transition plate 203 facing away from the second bottom plate 201.

[0043] This can increase the width of the skin 30 between the first flange 10 and the second flange 20, thereby enabling the non-metallic expansion joint to have a greater displacement compensation capacity. Because the wider the skin 30, the larger the skin area, and the larger skin area provides more telescopic space, thus being able to absorb greater axial, lateral or angular displacements; the wider skin 30 can better resist the influence of external forces, improve the overall strength and durability of the non-metallic expansion joint, and the wider skin 30 can also withstand greater pressure and temperature changes, extending the service life of the non-metallic expansion joint.

[0044] And the second connecting plate 204 is located in the middle of the side of the transition plate 203 facing away from the second bottom plate 201. In this way, compared with setting the second connecting plate 204 on the side of the transition plate 203 facing away from the second bottom plate 201 and towards the edge of the first flange 10, the structural strength of the second flange 20 can be enhanced.

[0045] Among them, referring to the attached Figure 1 , the present utility model proposes a specific structure of the first flange 10:

[0046] The first flange 10 includes a first bottom plate 101, a third connecting plate 102 and a first top plate 103;

[0047] The first bottom plate 101, the third connecting plate 102 and the first top plate 103 can be connected to form a third "C"-shaped plate 104, and the opening of the third "C"-shaped plate 104 faces away from the second flange 20;

[0048] Among them, to ensure the tight connection between the skin 30 and the first flange 10 and the second flange 20 respectively and avoid leakage, referring to the attached Figure 1 and 3 , the non-metallic expansion joint further includes a skin fixing pressing plate 40 and a plurality of skin fasteners 50. The skin fixing pressing plate 40 is located on the top of the second top plate 205, and one side of the skin 30 is provided between the second top plate 205 and the skin fixing pressing plate 40. And a plurality of the skin fasteners 50 sequentially pass through the skin fixing pressing plate 40, the skin 30 and the second top plate 205 in the circumferential direction, so that the skin fixing pressing plate 40 cooperates with the second top plate 205 to press one side of the skin 30.

[0049] And the other side of the skin 30 is provided between the top of the first top plate 103 and the skin fixing pressing plate 40. And a plurality of the skin fasteners 50 sequentially pass through the skin fixing pressing plate 40, the skin 30 and the first top plate 103 in the circumferential direction, so that the skin fixing pressing plate 40 cooperates with the first top plate 103 to press the other side of the skin 30.

[0050] Moreover, to ensure that the skin 30 is at the same horizontal height, the top of the first top plate 103 and the top of the second top plate 205 are at the same horizontal height.

[0051] Moreover, a heat insulation material is filled in the heat insulation space 60 formed by the first flange 10, the second flange 20 and the skin 30. This heat insulation material can prevent the heat in the flue or the rest of the pipeline system from dissipating into the environment, thereby reducing energy waste and improving the overall energy efficiency.

[0052] It should be noted that the skin fastener 50 proposed in this embodiment is preferably a self-locking bolt to prevent the skin fastener 50 from loosening by itself under vibration or dynamic load. Since the self-locking bolt is a prior art, no further description will be given here.

[0053] Among them, with reference to the attached Figure 2 The skin fixing pressing plate 40, the second bottom plate 201, the first connecting plate 202, the transition plate 203, the second connecting plate 204 and the second top plate 205 can respectively enclose a square annular structure or a circular annular structure.

[0054] The first bottom plate 101, the third connecting plate 102 and the first top plate 103 can enclose a square annular structure or a circular annular structure.

[0055] It should be noted that the shape of the non-metallic expansion joint proposed by the present utility model is exemplified by a cylindrical shape.

[0056] Among them, a plurality of skin fasteners 50 are uniformly arranged along the circumferential direction of each skin fixing pressing plate 40 to make the connection between the skin 30 and the first flange 10 and the second flange 20 closer.

[0057] Moreover, a gap (not shown, the same throughout the text) is formed between the end of each skin fastener 50 and the corresponding transition plate 203; a gap is formed between the end of each skin fastener 50 and the corresponding first bottom plate 101.

[0058] In this way, the gap can help the skin fastener 50 absorb the displacement caused by reasons such as thermal expansion and contraction, so as to reduce the pressure on the skin fastener 50 and extend its service life; the gap can also help reduce vibration, noise and vibration transmission; and in a high-temperature environment, the gap can also leave space for thermal expansion to avoid stress concentration caused by expansion.

[0059] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all embodiments. The accompanying drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the content of the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, is similarly within the scope of the patent protection of the present utility model.

Claims

1. A non-metallic expansion joint, comprising a first flange (10), a second flange (20) and a skin (30) located therebetween, characterized in that: The second flange (20) includes a second bottom plate (201), a first connecting plate (202), a transition plate (203), a second connecting plate (204), and a second top plate (205); A first connecting plate (202) is connected between the second bottom plate (201) and the transition plate (203), and a second connecting plate (204) is connected between the transition plate (203) and the second top plate (205); The second top plate (205) is further connected to a skin (30).

2. The non-metallic expansion joint according to claim 1, characterized in that: The second bottom plate (201), the first connecting plate (202), and the transition plate (203) can be connected to form a first "C"-shaped plate (206), and the opening of the first "C"-shaped plate (206) faces away from the first flange (10).

3. The non-metallic expansion joint according to claim 1, characterized in that: The second connecting plate (204) is located in the middle of the side of the transition plate (203) facing away from the second bottom plate (201).

4. The non-metallic expansion joint according to claim 1, characterized in that: The transition plate (203), the second connecting plate (204), and the second top plate (205) can be connected to form a second "C"-shaped plate (207), and the opening of the second "C"-shaped plate (207) faces away from the first flange (10).

5. The non-metallic expansion joint according to claim 1, characterized in that: The non-metallic expansion joint further includes a skin fixing pressing plate (40) and a plurality of skin fasteners (50). The skin fixing pressing plate (40) is located on the top of the second top plate (205), and one side of the skin (30) is provided between the second top plate (205) and the skin fixing pressing plate (40). A plurality of the skin fasteners (50) sequentially pass through the skin fixing pressing plate (40), the skin (30), and the second top plate (205) in the circumferential direction, so that the skin fixing pressing plate (40) cooperates with the second top plate (205) to press one side of the skin (30).

6. The non-metallic expansion joint according to claim 5, characterized in that: A gap is formed between the end of each skin fastener (50) and the corresponding transition plate (203).

7. The non-metallic expansion joint according to claim 5, characterized in that: The skin fixing pressing plate (40), the second bottom plate (201), the first connecting plate (202), the transition plate (203), the second connecting plate (204), and the second top plate (205) can each enclose a ring structure.

8. The non-metallic expansion joint according to claim 5, characterized in that: The first flange (10) includes a first bottom plate (101), a third connecting plate (102), and a first top plate (103); The first bottom plate (101), the third connecting plate (102), and the first top plate (103) can be connected to form a third "C"-shaped plate (104), and the opening of the third "C"-shaped plate (104) faces away from the second flange (20); The other side of the skin (30) is provided between the top of the first top plate (103) and the skin fixing pressing plate (40). A plurality of the skin fasteners (50) sequentially pass through the skin fixing pressing plate (40), the skin (30), and the first top plate (103) in the circumferential direction, so that the skin fixing pressing plate (40) cooperates with the first top plate (103) to press the other side of the skin (30).

9. The non-metallic expansion joint according to claim 8, characterized in that: A gap is formed between the end of each skin fastener (50) and the corresponding first bottom plate (101).

10. The non-metallic expansion joint according to claim 8, characterized in that: The first bottom plate (101), the third connecting plate (102) and the first top plate (103) can all be enclosed to form an annular structure.

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