Corrugated pipe capable of preventing air leakage

Abstract

The utility model provides an air leakage prevention corrugated pipe, which belongs to the technical field of air leakage of corrugated pipes and comprises a tail connecting ring fixedly connected to the rear end of the corrugated pipe, a head connecting component arranged at the front end of the corrugated pipe, and a clamping component arranged in the middle of the head connecting component. The shape memory polymer filling layer is arranged between the inner lantern ring and the outer capsule wrapping layer, and the shape memory polymer can be used for simply repairing when the outside of the corrugated pipe is damaged through the characteristics of the shape memory polymer, so that the later maintenance cost is reduced, and the service life of the corrugated pipe is prolonged. Meanwhile, a repairing agent filled between the inner capsule wrapping layer and the outer capsule wrapping layer is matched, the automatic repairing effect can be further enhanced, the inner capsule wrapping layer and the outer capsule wrapping layer are combined, the shape memory polymer filling layer can provide additional supporting and sealing, the repairing agent can fill defects and cracks, and the repairing effect and durability can be enhanced through combination of the two.

Description

Technical Field

[0001] The utility model relates to the technical field of air leakage of bellows, in particular to a bellows capable of preventing air leakage. Background Art

[0002] Bellows is a very important engineering material. It not only has the characteristics mentioned above, but also exhibits excellent performance due to its unique structure. In pipeline engineering, in addition to compensating for the thermal expansion and contraction of the pipeline and reducing vibration and noise, it can also effectively improve the stability and safety of the pipeline system and extend the service life of the pipeline. In the field of instrumentation, the high-precision measurement capability of bellows makes it an indispensable component, providing reliable guarantee for the accurate acquisition of various data. In addition, in some special environments, such as high temperature, high pressure or strong corrosion conditions, bellows can also exert their excellent performance to ensure the normal operation of the equipment.

[0003] Chinese patent authorization announcement number: CN220435790U, provides a bellows for preventing air leakage. When the gas and liquid in the bellows flow into the interior of the pipe, a vortex is generated and the water wheel is driven to start rotating, the blades are driven to start rotating, and the brush is driven by the wheel to clean the four walls inside the pipe, thereby cleaning the sediment on the four walls. When the rotating rod starts to rotate, the outer frame is driven to start rotating through the chain and the rubber balls one, two, three and four inside the frame are pressed against the inside of the pipe by the spring to achieve the effect of vibration to shake off the sediment on the brush. However, the bellows are usually limited in length during production or transportation, but the length usually required during use is longer, so multiple pieces need to be spliced ​​for use. The splicing method can ignore the length limitation, and the transportation and production are more convenient. However, the existing spliced ​​bellows are more prone to leakage at the connection, and the later maintenance is troublesome.

[0004] Therefore, it is necessary to provide a bellows that prevents air leakage to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a bellows for preventing air leakage.

[0006] The utility model provides a bellows for preventing air leakage, comprising a rear end of the bellows fixedly connected with a tail connecting ring, a front end of the bellows provided with a head connecting assembly, and a clamping assembly provided in the middle of the head connecting assembly;

[0007] The head connection assembly includes a head mounting ring connected to the front end of the corrugated tube, the outer side of the head mounting ring is fixedly connected to a waterproof layer, the inner side of the head mounting ring is fixedly connected to an inner sleeve ring, the inner side of the inner sleeve ring is fixedly connected to an outer capsule wrapping layer, and the inner side of the outer capsule wrapping layer is fixedly connected to an inner capsule wrapping layer.

[0008] Preferably, a shape memory polymer filling layer is filled between the inner sleeve ring and the outer capsule wrapping layer, and a repair agent is filled between the outer capsule wrapping layer and the inner capsule wrapping layer.

[0009] Preferably, the clamping assembly comprises a first clamping ring and a second clamping ring which are sleeved on the middle part of the head mounting ring, and the first clamping ring and the second clamping ring are fixedly connected by bolts.

[0010] Preferably, a pair of annular grooves are provided on the outer side of the tail connecting ring.

[0011] Preferably, a plurality of strip-shaped holes are provided in the middle of the head mounting ring.

[0012] Preferably, a pair of internal threaded holes for matching with bolts are provided in the middle of the first clamping ring and the second clamping ring.

[0013] Preferably, the bellows is communicated with the interior of the tail connecting ring and the head mounting ring.

[0014] Compared with the related art, the bellows for preventing air leakage provided by the utility model has the following beneficial effects:

[0015] 1. A bellows for preventing air leakage, which is provided with a shape memory polymer filling layer between an inner sleeve ring and an outer capsule wrapping layer. When the outer part of the bellows is damaged, the shape memory polymer can be used for simple repair by virtue of its characteristics, thereby reducing the subsequent maintenance cost. At the same time, the repair agent filled between the inner capsule wrapping layer and the outer capsule wrapping layer can further enhance the automatic repair effect. The combination of the two, the shape memory polymer filling layer can provide additional support and sealing, while the repair agent can fill defects and cracks. The combination of the two can enhance the repair effect and durability.

[0016] 2. A bellows for preventing air leakage, in which an inner capsule wrapping layer is directly fitted with the middle part of a tail connecting ring, and the inner capsule wrapping layer and a repair agent can be squeezed into an annular groove in the middle part of the tail connecting ring. The sealing effect can be enhanced by the fitting of the liquid repair agent with the inner capsule wrapping layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall split structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the disassembly structure of the clamping assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the head mounting ring of the utility model;

[0021] Figure 5 It is a schematic cross-sectional structure diagram of the head connection assembly of the present utility model.

[0022] Numbers in the figure: 1, bellows; 2, tail connecting ring; 3, head connecting assembly; 4, clamping assembly; 301, head mounting ring; 302, waterproof layer; 303, inner sleeve ring; 304, outer capsule wrapping layer; 305, inner capsule wrapping layer; 306, shape memory polymer filling layer; 307, repair agent; 401, first clamping ring; 402, second clamping ring; 403, bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5 The utility model provides a bellows for preventing air leakage, comprising a bellows 1 having a tail connecting ring 2 fixedly connected to the rear end thereof, a head connecting component 3 provided at the front end of the bellows 1, and a clamping component 4 provided in the middle of the head connecting component 3;

[0025] The head connection assembly 3 includes a head mounting ring 301 connected to the front end of the corrugated tube 1, the outer side of the head mounting ring 301 is fixedly connected with a waterproof layer 302, the inner side of the head mounting ring 301 is fixedly connected with an inner sleeve ring 303, the inner side of the inner sleeve ring 303 is fixedly connected with an outer capsule wrapping layer 304, and the inner side of the outer capsule wrapping layer 304 is fixedly connected with an inner capsule wrapping layer 305.

[0026] A shape memory polymer filling layer 306 is filled between the inner sleeve ring 303 and the outer capsule wrapping layer 304 , and a repair agent 307 is filled between the outer capsule wrapping layer 304 and the inner capsule wrapping layer 305 ;

[0027] In this solution, shape memory polymer is a polymer material with shape memory ability. It can change shape and fix under certain conditions, and then through external stimulation, such as heat, the internal temperature of the bellows 1 is usually high, so as to adapt to the shape memory polymer;

[0028] A repair agent is a material used to repair damage or defects in an object. It usually has good adhesion, filling and durability, and can restore the damaged part to a better condition.

[0029] The clamping assembly 4 includes a first clamping ring 401 and a second clamping ring 402 which are sleeved on the middle of the head mounting ring 301 . The first clamping ring 401 and the second clamping ring 402 are fixedly connected by bolts 403 .

[0030] A pair of annular grooves are formed on the outer side of the tail connecting ring 2 .

[0031] A plurality of strip-shaped holes are formed in the middle of the head mounting ring 301 .

[0032] A pair of internal threaded holes connected with the bolts 403 are respectively formed in the middle of the first clamping ring 401 and the second clamping ring 402 .

[0033] The bellows 1 is connected to the interior of the tail connecting ring 2 and the head mounting ring 301 .

[0034] When multiple bellows 1 need to be spliced ​​together, the connection can be completed by simply inserting the tail connection ring 2 at the tail of one bellows 1 into the head connection assembly 3 at the front end of another bellows 1 and then fixing them with the clamping assembly 4.

[0035] When the tail connecting ring 2 is first inserted into the inner capsule wrapping layer 305, since the inner capsule wrapping layer 305 and the outer repairing agent 307 are both made of soft liquid materials, and multiple grooves are provided on the outer side of the tail connecting ring 2, the inner capsule wrapping layer 305 and the repairing agent 307 are fitted to the outer side of the tail connecting ring 2 and its multiple grooves, the sealing can be improved by liquid connection and fitting. At the same time, the repairing agent 307 can also repair the tail connecting ring 2. When the tail connecting ring 2 is slightly damaged, it can be simply repaired to reduce the probability of dangerous accidents. By setting the shape memory polymer filling layer 306 filled between the inner sleeve ring 303 and the outer capsule wrapping layer 304, when the outer side of the bellows 1 is damaged, the inner sleeve ring 303 can be used for preliminary protection first. If the inner sleeve ring 303 is also damaged, the shape memory polymer filling layer 306 inside it can simply repair the inner sleeve ring 303.

[0036] The first clamping ring 401 and the second clamping ring 402 can be tightened by rotating the bolt 403 to cooperate with the multiple grooves in the middle of the head mounting ring 301, so as to achieve the purpose of tightening the head mounting ring 301, thereby achieving the effect of clamping it, and the overall structure is simple and low in cost.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bellows for preventing air leakage, characterized in that: The rear end of the bellows (1) is fixedly connected to a tail connecting ring (2), the front end of the bellows (1) is provided with a head connecting component (3), and the middle part of the head connecting component (3) is provided with a clamping component (4); The head connection assembly (3) comprises a head mounting ring (301) connected to the front end of the corrugated tube (1); the outer side of the head mounting ring (301) is fixedly connected to a waterproof layer (302); the inner side of the head mounting ring (301) is fixedly connected to an inner sleeve ring (303); the inner side of the inner sleeve ring (303) is fixedly connected to an outer capsule wrapping layer (304); and the inner side of the outer capsule wrapping layer (304) is fixedly connected to an inner capsule wrapping layer (305).

2. A bellows for preventing air leakage according to claim 1, characterized in that: A shape memory polymer filling layer (306) is filled between the inner sleeve ring (303) and the outer capsule wrapping layer (304), and a repair agent (307) is filled between the outer capsule wrapping layer (304) and the inner capsule wrapping layer (305).

3. The bellows for preventing air leakage according to claim 1, characterized in that: The clamping assembly (4) comprises a first clamping ring (401) and a second clamping ring (402) which are sleeved on the middle part of the head mounting ring (301); the first clamping ring (401) and the second clamping ring (402) are fixedly connected by bolts (403).

4. The bellows for preventing air leakage according to claim 1, characterized in that: A pair of annular grooves are provided on the outer side of the tail connecting ring (2).

5. The bellows for preventing air leakage according to claim 1, characterized in that: A plurality of strip-shaped holes are provided in the middle of the head mounting ring (301).

6. The bellows for preventing air leakage according to claim 3, characterized in that: A pair of internal threaded holes connected with matching bolts (403) are provided in the middle of each of the first clamping ring (401) and the second clamping ring (402).

7. The bellows for preventing air leakage according to claim 1, characterized in that: The bellows (1) is in communication with the interior of the tail connection ring (2) and the head mounting ring (301).

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