CN212131691U

CN212131691U - Non-metal expansion joint

Info

Publication number: CN212131691U
Application number: CN202020056986.5U
Authority: CN
Inventors: 姜爱荣
Original assignee: Jiangsu Changfeng Bellows Co ltd
Current assignee: Jiangsu Changfeng Bellows Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-12-11
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a non-metal expansion joint relates to non-metal expansion joint technical field, produces great vibration easily at the in-process that uses for solving current non-metal expansion joint, leads to the cracked problem of composite fiber cloth. One side of flange pipe is provided with the draft tube, the top of draft tube is provided with the retaining ring, the top of retaining ring is provided with the insulating layer, the top of insulating layer is provided with composite fiber cloth, one side of composite fiber cloth is provided with fastening bolt, fastening bolt's outer wall is provided with the plane packing ring, the below of plane packing ring is provided with spring washer, spring washer's below is provided with fastening nut, composite fiber cloth's top is provided with the clamp plate, the inside of clamp plate is provided with the double-end pull rod, the outer wall of double-end pull rod is provided with the ring packing ring, one side of ring packing ring is provided with shock washer, one side of shock washer is provided with fixation nut.

Description

Non-metal expansion joint

Technical Field

The utility model relates to a non-metallic expansion joint technical field specifically is a non-metallic expansion joint.

Background

Expansion joints are also conventionally called compensators or expansion joints. It is composed of bellows (an elastic element) and its working body, end pipe, support, flange and guide pipe. The expansion joint is a flexible structure provided on the vessel shell or pipe in order to compensate for additional stresses due to temperature differences and mechanical vibrations. The effective telescopic deformation of the working body corrugated pipe is utilized to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion and contraction due to heat and the like or compensate the axial, transverse and angular displacement of the pipelines, the conduits, the containers and the like. The expansion joint mainly comprises a metal expansion joint and a nonmetal expansion joint, for a hot air pipeline and a smoke pipeline, most of the expansion joints are nonmetal expansion joints, mainly because the expansion joints are made of fiber fabrics, rubber, high-temperature resistant materials and the like, the deformation of a vibration instrument and a pipeline for running of a fan and an air pipe can be compensated, and meanwhile, the nonmetal expansion joint has the characteristics of axial compensation, transverse compensation, angular compensation, no thrust, simplified support design, corrosion resistance, high temperature resistance, noise elimination, vibration reduction and the like.

The existing nonmetal expansion joint is easy to generate larger vibration in the using process, so that the composite fiber cloth is broken; thus, the existing requirements are not met, and a non-metal expansion joint is provided for the purpose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nonmetal expansion joint to it produces great vibration easily at the in-process that uses to propose current nonmetal expansion joint in the above-mentioned background art to solve, leads to the cracked problem of composite fiber cloth.

In order to achieve the above object, the utility model provides a following technical scheme: a nonmetal expansion joint comprises a connecting flange pipe, a guide cylinder is arranged on one side of the connecting flange pipe, a check ring is arranged above the guide cylinder, a heat insulation layer is arranged above the check ring, composite fiber cloth is arranged above the heat insulation layer, a fastening bolt is arranged on one side of the composite fiber cloth, a flat washer is arranged on the outer wall of the fastening bolt, a spring washer is arranged below the flat washer, a fastening nut is arranged below the spring washer, a pressing plate is arranged above the composite fiber cloth, a double-headed pull rod is arranged inside the pressing plate, a ring washer is arranged on the outer wall of the double-headed pull rod, a damping washer is arranged on one side of the ring washer, a fixing nut is arranged on one side of the damping washer, a connecting plate is arranged on one side of the pressing plate, and a fixing bolt is arranged inside the connecting plate, the anti-slip shoe is characterized in that a supporting plate is arranged below the connecting plate, a round gasket is arranged below the supporting plate, an anti-slip gasket is arranged below the round gasket, a check nut is arranged below the anti-slip gasket, a base plate is arranged on one side of the supporting plate, and a fixing plate is arranged below the supporting plate.

Preferably, the double-end pull rod is provided with eight, and eight double-end pull rods evenly distributed are around the flange pipe.

Preferably, twenty fastening bolts are arranged and are uniformly distributed around the base plate.

Preferably, the number of the fixing bolts is eight, and the eight fixing bolts are uniformly distributed around the retainer ring.

Preferably, the number of the fixing nuts is four, and the four fixing nuts are symmetrical about the vertical center line of the double-headed pull rod.

Preferably, the connecting flange pipe is connected with the guide shell in a welding mode.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up double-end pull rod and spring washer structure, can improve the fastness and the stability of both sides flange pipe, the composite fiber cloth of fixing that simultaneously can firmly avoids composite fiber cloth to produce great deformation when the inside gas pressure of pipeline changes, and then avoids composite fiber cloth to drag the fracture and open.

2. Through setting up backing plate and fastening bolt structure, can make the outer wall of composite fiber cloth and flange pipe combine together firmly, avoid producing the infiltration that great gap leads to gaseous leakage or rainwater to great improvement the leakproofness of nonmetal expansion joint.

3. Through setting up retaining ring and insulating layer structure, not only can avoid producing great pressure to composite fiber cloth when pipeline internal pressure changes, can avoid in the temperature transmission in the pipeline to composite fiber cloth, avoided composite fiber cloth to take place spontaneous combustion or inside material to take place to damage to great improvement composite fiber cloth's life.

Drawings

FIG. 1 is an overall half-sectional view of the present invention;

FIG. 2 is a schematic view of a partial structure of the flange pipe of the present invention;

FIG. 3 is a schematic view of the present invention showing a part A enlarged;

fig. 4 is a schematic diagram of the local enlargement at the position B of the present invention.

In the figure: 1. connecting a flange pipe; 2. a retainer ring; 3. a draft tube; 4. a thermal insulation layer; 5. pressing a plate; 6. a double-ended pull rod; 7. fixing a nut; 8. a cushion ring; 9. a ring gasket; 10. fastening a bolt; 11. a planar washer; 12. a spring washer; 13. fastening a nut; 14. a fixing plate; 15. composite fiber cloth; 16. a connecting plate; 17. a support plate; 18. a base plate; 19. fixing the bolt; 20. a circular washer; 21. an anti-slip washer; 22. a locknut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, the present invention provides an embodiment: a nonmetal expansion joint comprises a connecting flange pipe 1 which can be firmly fixed with two sides of a pipeline, a guide cylinder 3 is arranged on one side of the connecting flange pipe 1 and can avoid gas backflow, a retainer ring 2 is arranged above the guide cylinder 3 and can improve the strength of the guide cylinder 3 and avoid sinking when gas flows, a heat insulation layer 4 is arranged above the retainer ring 2 and can avoid the temperature of the pipeline from being transmitted to composite fiber cloth 15, so that spontaneous combustion or damage of internal materials of the composite fiber cloth can be avoided, the composite fiber cloth 15 is arranged above the heat insulation layer 4 and can absorb expansion amount and prevent leakage of air and rainwater, fastening bolts 10 are arranged on one side of the composite fiber cloth 15 and can firmly fix the connecting flange pipe 1 and a backing plate 18, so that the composite fiber cloth 15 is firmly clamped and the composite fiber cloth 15 is prevented from being broken, the outer wall of the fastening bolt 10 is provided with a plane washer 11, a spring washer 12 is arranged below the plane washer 11, the fastening bolt 10 can be prevented from loosening, a fastening nut 13 is arranged below the spring washer 12, a pressing plate 5 is arranged above the composite fiber cloth 15, a double-end pull rod 6 is arranged inside the pressing plate 5, the connecting flange pipes 1 on two sides can be firmly fixed, the composite fiber cloth 15 is prevented from being pulled greatly, a ring washer 9 is arranged on the outer wall of the double-end pull rod 6, a damping washer 8 is arranged on one side of the ring washer 9, a fixing nut 7 is arranged on one side of the damping washer 8, the double-end pull rod 6 can be firmly fixed, the loosening or the breakage in long-term use can be avoided, a connecting plate 16 is arranged on one side of the pressing plate 5, a fixing bolt 19 is arranged inside the connecting plate 16, the periphery of the composite fiber cloth 15 can, avoid producing the gap and lead to gas leakage or rainwater infiltration, the below of connecting plate 16 is provided with backup pad 17, and the below of backup pad 17 is provided with round gasket 20, and the below of round gasket 20 is provided with anti-skidding packing ring 21, and the below of anti-skidding packing ring 21 is provided with lock nut 22, and one side of backup pad 17 is provided with backing plate 18, and the below of backup pad 17 is provided with fixed plate 14, can improve the intensity of flange pipe 1, avoids taking place sunken or protruding when inside pressure changes.

Further, double-end pull rod 6 is provided with eight, and eight double-end pull rod 6 evenly distributed are around flange pipe 1, and the fixed composite fiber cloth 15 that lives that can firmly to can composite fiber cloth 15 fastness and stability, avoid producing violent vibration because the change of intraductal pressure in the in-process that uses, and then lead to composite fiber cloth 15 fracture.

Furthermore, the fastening bolts 10 are arranged twenty, and the twenty fastening bolts 10 are uniformly distributed around the backing plate 18 and can firmly fix the backing plate 18 and the connecting flange pipe 1, so that the composite fiber cloth 15 can be firmly clamped and the phenomenon that the composite fiber cloth falls off from the middle of the backing plate 18 and the connecting flange pipe 1 when the pressure intensity changes is avoided.

Furthermore, the number of the fixing bolts 19 is eight, and the eight fixing bolts 19 are uniformly distributed around the retainer ring 2, so that the periphery of the composite fiber cloth 15 can be firmly fixed, and the nonmetal expansion joint can resist the change of axial pressure and radial pressure.

Further, fixation nut 7 is provided with four, and four fixation nut 7 are symmetrical about the perpendicular central line of double-end pull rod 6, can improve double-end pull rod 6's stability, avoid taking place not hard up in the reciprocal vibration of making a round trip at composite fiber cloth 15 to avoid composite fiber cloth 15 to take place bigger deformation, and then avoid composite fiber cloth 15 to drag the fracture and come.

Further, the connecting flange pipe 1 is connected with the guide shell 3 in a welding mode, so that the firmness of the guide shell 3 can be improved, and the phenomenon that the guide shell falls off or is broken in long-time use is avoided.

The working principle is as follows: when in use, the nonmetal expansion joint is respectively fixed in a pipeline through the connecting flange pipes 1 at the two sides, under the guide of the guide shell 3, the medium in the pipeline stably flows according to a certain direction, when the temperature in the pipeline changes suddenly, due to the characteristics of expansion with heat and contraction with cold, the medium starts to flow irregularly and at variable speed, at the moment, the composite fiber cloth 15 generates irregular deformation under the impact of the medium to counteract the change of the pressure in the pipeline, the double-end pull rod 6 firmly fixes the composite fiber cloth 15 to avoid the composite fiber cloth 15 from breaking due to larger vibration, meanwhile, the heat insulation layer 4 blocks heat generated when the medium flows, so that a large amount of heat is prevented from being transferred into the composite fiber cloth 15, thereby avoiding the composite fiber cloth 15 from being damaged, and finally, after the temperature is recovered, the composite fiber cloth 15 is recovered to the original state, thereby absorbing the expansion amount in the pipeline.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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

1. The utility model provides a non-metallic expansion joint, includes flange pipe (1), its characterized in that: a guide cylinder (3) is arranged on one side of the connecting flange pipe (1), a check ring (2) is arranged above the guide cylinder (3), a heat insulation layer (4) is arranged above the check ring (2), composite fiber cloth (15) is arranged above the heat insulation layer (4), a fastening bolt (10) is arranged on one side of the composite fiber cloth (15), a plane washer (11) is arranged on the outer wall of the fastening bolt (10), a spring washer (12) is arranged below the plane washer (11), a fastening nut (13) is arranged below the spring washer (12), a pressing plate (5) is arranged above the composite fiber cloth (15), a double-headed pull rod (6) is arranged inside the pressing plate (5), a ring washer (9) is arranged on the outer wall of the double-headed pull rod (6), and a damping washer (8) is arranged on one side of the ring washer (9), one side of cushion ring (8) is provided with fixation nut (7), one side of clamp plate (5) is provided with connecting plate (16), the inside of connecting plate (16) is provided with fixing bolt (19), the below of connecting plate (16) is provided with backup pad (17), the below of backup pad (17) is provided with round washer (20), the below of round washer (20) is provided with anti-skidding packing ring (21), the below of anti-skidding packing ring (21) is provided with lock nut (22), one side of backup pad (17) is provided with backing plate (18), the below of backup pad (17) is provided with fixed plate (14).

2. A non-metallic expansion joint according to claim 1, wherein: the eight double-end pull rods (6) are arranged, and the eight double-end pull rods (6) are uniformly distributed around the connecting flange pipe (1).

3. A non-metallic expansion joint according to claim 1, wherein: twenty fastening bolts (10) are arranged, and twenty fastening bolts (10) are uniformly distributed around the base plate (18).

4. A non-metallic expansion joint according to claim 1, wherein: the number of the fixing bolts (19) is eight, and the eight fixing bolts (19) are uniformly distributed around the retainer ring (2).

5. A non-metallic expansion joint according to claim 1, wherein: the number of the fixing nuts (7) is four, and the four fixing nuts (7) are symmetrical about the vertical center line of the double-end pull rod (6).

6. A non-metallic expansion joint according to claim 1, wherein: the connecting flange pipe (1) is connected with the guide shell (3) in a welding mode.