TWM447448U - Joint device - Google Patents

Description

Joint device

The present invention relates to a joint device, and more particularly to a joint device for piping and equipment installation.

The pipeline is arranged to provide a path for the transmission of various fluids (for example, liquids, gases), and the various joint devices provided in the pipelines mainly prevent the pipeline from being thermally expanded and contracted due to temperature changes, resulting in bending or breaking, In the case of fluid leakage, such as liquefied petroleum gas, toxic chemical liquid, high-pressure gas and other dangerous fluids, the leakage will cause environmental pollution, gas explosion or toxic gas diffusion. . In addition, if the joint device is installed in an environment such as an engine or a compressor, the pipe may be stretched and shaken due to long-term mechanical vibration. Therefore, the joint device must also have the ability to absorb vibration to compensate for vibration or deformation. Displacement changes. Furthermore, the degree of adhesion of the joint device to the pipe is also important. If the degree of tightness is not good, the gap may also cause fluid leakage. Therefore, the joint device installed in the pipeline plays an important role in the setting of the overall pipeline.

Referring to Figure 1, a conventional joint device for piping and equipment installation includes a bellows 11 having a hollow tubular shape, two flanges 12, and two limit bars 13. Each of the flanges 12 has a top abutting portion 121 and a through hole 122. The top abutting portion 121 has a first top surface 123, a second top surface 124 opposite to each other, and two perforations in opposite positions. 125; The through hole 122 extends through the first and second top surfaces 123 and 124. The through holes 122 of the flanges 12 respectively pass through opposite end portions of the bellows 11, and the opposite ends of the bellows 11 are respectively bent and fixed to the first top surfaces 123; each of the roots The opposite ends of the limiting rod 13 pass through the perforations 125 and are screwed to the first and second top surfaces 123, 124, respectively.

It can be seen from the above description that the joint device restricts the amount of expansion and contraction of the bellows 11 by the limiting rod 13, so that the amount of expansion and contraction of the bellows 11 is kept within a limited range to avoid damage, however, if long-term In the vibrating environment, the screwed portion of the limiting rod 13 may loosen and fall off due to long-term vibration, and the damage of the bellows 11 also reduces the anti-vibration effect and service life of the joint device. Moreover, the joint between the joint device and the pipeline cannot be completely adhered, and fluid leakage is likely to occur, and the leakproof function is poor. If the fluid is dangerously transported such as an acidic liquid or a chemical, the use is still safe. concern.

Therefore, the object of the present invention is to provide a joint device which can simultaneously have a leakproof and shockproof effect and is easy to process.

Therefore, the novel joint device comprises a hollow tubular limit network tube, a hollow tubular bellows, two flanges, and two seal rings.

The bellows is disposed in the limit network tube, and the length of the bellows is greater than the limit network tube.

Each of the flanges has a top abutting portion and a through hole having a first top surface opposite to each other and a second top surface extending through the first and second top surfaces.

The through holes of the flanges are respectively sleeved at opposite ends of the bellows, and the second top surfaces are respectively connected to opposite end portions of the limiting mesh tube, and the opposite ends of the bellows are respectively fixed Provided on the first top surfaces, the sealing rings are respectively disposed on the first top surfaces.

The foregoing and other technical aspects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 2, a preferred embodiment of the joint device of the present invention comprises a hollow tubular limit network tube 2, two collars 3, a hollow tubular bellows 4, two flanges 5, and two sealing rings. 6.

The collars 3 are respectively sleeved at opposite ends of the limiting network tube 2. Preferably, the limiting network tube 2 has an elastic force for telescopic bending to cover and protect the corrugation located inside. The tube 4 is not damaged by external force. In the preferred embodiment, the limiting network tube 2 is woven from metal wires and has a retractable bending and elastic mesh structure, and the collars 3 are made of metal, and the welding method and the limitation are used. The bit network tube 2 is fixedly connected.

The bellows 4 is disposed in the limiting network tube 2, and includes a telescopic section 41 and two bent portions 42 respectively connected to the two ends of the telescopic section 41 and bent outward, and the telescopic section 41 is correspondingly disposed. Within the limit network tube 2. The telescopic section 41 has a plurality of bellows 411 which are connected to each other and have a wrinkle shape and are stretchable. The bellows 4 has an excellent vibration absorbing effect by utilizing the stretchability of the bellows 411. Yes, the bellows 411 can also be made of a multi-layer stainless steel plate, which not only has a long service life, but also has a long service life. It has high temperature resistance, radiation resistance, corrosion resistance, etc. It also maintains high fluid cleanliness and is more suitable for use in drinking water pipelines.

Each of the flanges 5 includes a top abutting portion 51 and a through hole 52. The top abutting portion 51 has a first top surface 511, a second top surface 512, and a plurality of engaging holes 513 opposite to each other. The through hole 52 extends through the first and second top surfaces 511 and 512 for passing and fixing the end of the bellows 4 to the first top surface 511. The engaging holes 513 extend through the first and second top surfaces. 511, 512, the joint device can be fixedly connected to other pipelines by using the joint holes 513.

The sealing rings 6 are respectively disposed on the first top surfaces 511. When the joint device is connected with other pipes, the first top surface 511 of the flange 5 tightly clamps the sealing ring 6 with the pipe. The joint device can be completely in close contact with the pipeline.

Specifically, the assembly of the joint device is performed by first sleeves the collars 3 on opposite ends of the limit network tube 2, and then inserting a straight tubular bellows 4 into the limit network tube. 2, then, the through holes 52 of the flanges 5 are respectively sleeved at opposite ends of the bellows 4, so that the opposite ends of the bellows 4 are exposed to the flanges 5, and the corrugations are The exposed portion of the tube 4 is outwardly bent to form the bent portions 42 , and the bent portions 42 are respectively fixedly fixed to the first top surfaces 511 , and the second top surfaces 512 are respectively The collars 3 are fixedly connected, and finally the sealing rings 6 are respectively sleeved on the bent portions 42, that is, the combination of the joint devices is completed.

Referring to FIG. 3, each of the flanges 5 further includes a fixing groove 53 formed on the second top surface 512 to surround the through hole 52. And communicating with the through hole 52, having a resisting surface 531 extending downward from the second top surface 512 and extending in the direction of the through hole 52, and a recessed area 532 defined by the abutting surface 531; The telescopic section 41 can be abutted against the abutment surface 531, and the end of the limiting network tube 2 and the collar 3 can further extend to the recessed area 532 and be fixed to the second top surface 512. Can provide better fixing effect.

More preferably, the collar 3 is fixed to the second top surface 512 by means of welding. Since the welding point is mainly located at the periphery of the pipeline, the pipeline is not affected, and the fixing groove 53 is simultaneously utilized. Having the limit network tube 2, the collar 3 and the telescopic section 41 ensure that the bellows 4 is not displaced, and the structure is more stable.

In summary, in the joint device provided by the present invention, the bellows 4 is used for absorbing the expansion or contraction of the pipeline due to temperature changes, and the displacement change caused by the buffer vibration, and the limit network tube 2 is for limiting the ripple. The amount of expansion and contraction of the tube 4 is such that the amount of expansion and contraction of the bellows 4 is kept within a limited range to avoid damage; the sealing ring 6 is used to ensure that the joint between the joint device and the pipeline can be completely closed without generating fluid. The leakage problem can efficiently transport the fluid and meet the safety requirements; the bellows 4 can be fixed on the flanges 5 by means of no welding, the processing combination is easy, and the manufacturing cost can be effectively reduced. Therefore, it is indeed possible to achieve the purpose of this new type.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent.

2‧‧‧Limited network management

3‧‧‧ collar

4‧‧‧ Bellows

41‧‧‧Flexible section

411‧‧‧ telescopic bladder

42‧‧‧Bends

5‧‧‧Flange

51‧‧‧Abutment

511‧‧‧ first top surface

512‧‧‧second top surface

513‧‧‧Join hole

52‧‧‧through hole

53‧‧‧fixed slot

531‧‧‧ by face

532‧‧‧ Groove area

6‧‧‧Seal ring

1 is a side cross-sectional view of a conventional joint device; FIG. 2 is a side cross-sectional view of the preferred embodiment; and FIG. 3 is a partial enlarged view of the preferred embodiment.

2‧‧‧Limited network management

3‧‧‧ collar

4‧‧‧ Bellows

41‧‧‧Flexible section

411‧‧‧ telescopic bladder

42‧‧‧Bends

5‧‧‧Flange

51‧‧‧Abutment

511‧‧‧ first top surface

512‧‧‧second top surface

513‧‧‧Join hole

52‧‧‧through hole

6‧‧‧Seal ring

Claims (7)

A joint device comprising: a hollow tubular limit network tube; a hollow tubular bellows disposed in the limit network tube, wherein the length of the bellows is greater than the limit network tube; Each of the flanges includes a top abutting portion and a through hole having a first top surface opposite to each other and a second top surface penetrating the first and second top surfaces, the through hole The through holes of the flanges are respectively sleeved at opposite ends of the bellows, and the second top surfaces are respectively connected to opposite end portions of the limiting mesh tube, and the opposite ends of the bellows are respectively fixed And the first top surfaces; and the two sealing rings are respectively disposed on the first top surfaces. The connector device of claim 1, further comprising two collars respectively connected to opposite ends of the limiting network tube, and the other ends of the collars away from the limiting network tube and the second of the flanges respectively Top connection. The joint device of claim 2, wherein the limit network tube is woven from a metal wire. The joint device of claim 3, wherein each of the flanges further includes a fixing groove formed on the second top surface and surrounding the through hole and communicating with the through hole. The joint device of claim 4, wherein the limit network tube and the end of the collar extend to the fixing groove and are fixed to the second top surface. The joint device of claim 1, wherein the abutting portion has a plurality of engaging holes penetrating the first and second top faces. The joint device according to claim 1, wherein the bellows has a plurality of bellows which are connected to each other and which are wrinkled and stretchable.