CN1030861C

CN1030861C - Direct inserting full weather moveable joint

Info

Publication number: CN1030861C
Application number: CN 91110809
Authority: CN
Inventors: 阎金波; 王敏祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-23
Filing date: 1991-11-23
Publication date: 1996-01-31
Anticipated expiration: 2006-11-23
Also published as: CN1073249A

Abstract

The present invention relates to the moving joint of a pipeline, which is composed of a negative joint body 1, a positive joint body 2, a sealing ring 3, and a fastening sleeve 4. The present invention which can be suitable for various operating conditions and various dimensions replaces the present flange and the present screw connection type moving joint, namely that a tube can be directly inserted in the joint without being welded and being sheathed with threading, and the joint bodies are screwed.

Description

Direct inserting full weather moveable joint

The present invention relates to a kind of pipe union, it is applicable to various diameters, and nominal pressure is less than or equal to 980 * 10 ⁴Pa, the medium Maximum operating temperature is less than the pipeline of 450 ℃ the various media of conveying.

Resemble thermoelectricity plant and chemical plant at present, normally adopt forged steel or steel flange connecting structure, when mounted, earlier the two halves flange respectively is welded on the pipe, the centre adds seal ring, with bolt the two halves flange is tightened together then.And, needing at first mantle fiber on pipe during installation for the malleable iron union that stainless steel union of carrying various aggressive medium pipelines to be adopted and general working condition are adopted, seal ring is added in the joint the inside.It is low that above union exists installation efficiency, cost height, problem such as workman's working condition is poor, and joint tighness is low.

Though having about 50 in the domestic pipe fitting patented technology of having announced at present is to belong to non-threaded connection type, can solve quick connection problem.But they are basically all at general working condition design.Wherein patent 88216965.3 and 90200089.6 can just can be carried various media by changing sealing ring material because be to adopt single seal ring.But, can not bear elevated pressures because be tightly to lean on the fastening pipe of seal ring.All the other patents all can not be carried aggressive medium.Part patent is just at the minor diameter pipe, and another part then just is applicable to big-inch pipe.These patented technologies all have narrow limitation on the applicable working condition condition at present.And also be that each is different to some extent on the structural type.This causes difficulty as the standardization of Updated product for non-threaded connection type pipe fitting.

One of purpose of the present invention, be to cancel need weld when existing product is installed or pipe on overlap wire process, existing to solve with the existing the problems referred to above of product.

Another object of the present invention is to develop the so-called round-the-clock pipe union that can both be suitable for different pressures, temperature, medium and size, is beneficial to the product variety unification, standardization and seriation.To fill up the existing above-mentioned deficiency of patented technology.

In order to realize above-mentioned purpose, a kind of direct insertion round-the-clock pipe union is proposed, during installation, as long as two tubes is directly inserted in the joint, the fastening body gets final product.In order to realize " round-the-clock ", structurally two tubes respectively has an adapter sleeve to bear high pressure.Adopt a seal ring to seal two tubes simultaneously, so only change the operating mode that sealing material just can be applicable to different temperatures and medium.Adopt the fittings body of different connection forms, to adapt to the pipe of different-diameter.

The design of the utility model realizes by structure shown in the drawings.The main body of forming union by a negative joint body and one or two male connector body.These two fittings bodies, available steel forge and form, and also available malleable iron casting forms, and fittings body can have different external shape and connection form.Shown in the accompanying drawing 1,2,3, for being applicable to the fittings body shape of diameter less than the 150mm pipe.Wherein accompanying drawing 3 is two male connector body structures, is applicable to that pressure is greater than 300 * 10 ⁴The high pressure occasion of Pa.Structure shown in the accompanying drawing 4 is applicable to the pipe of diameter greater than 150mm.In two fittings bodies, respectively have the adapter sleeve of a steel, be enclosed within two velamens respectively and connect on the pipe.Adapter sleeve is the opening taper ring, and its internal surface can have annular tooth, also smooth surface.The friction between fittings body and adapter sleeve when fastening in order to reduce, the adapter sleeve outer surface also can have several annular boss.The big end end face of adapter sleeve can be the plane, also can become inner conical, and a seal ring is equipped with in the centre in fittings body.Be enclosed within the tube end that two velamens connect simultaneously.Like this, during fastening two fittings bodies, make adapter sleeve locking pipe by first conical surface, and this moment, pipe can draw tighter and tighter, in case during high pressure, pipe is thrown off joint.By adapter sleeve crush seal circle, make two tubes sealed again.Because the medium that is transferred only contacts with seal ring in the joint, so the material that only changes seal ring just can be applicable to different medium and temperature operating mode.According to operating mode, it can be from various rubber, and the rubber asbestos are chosen in the sealing material that adopts on the engineerings such as plastics.Ring inner hole both sides diameter is identical, then constitutes with the footpath union, if both sides diameter difference then constitutes isodiameter movable joint.Seal ring can be special, also can on-the-spot twine with sealing material.The seal ring both ends of the surface can be the plane, also can become outer first taper, but will match with the big end end face of two adapter sleeves.

Description of drawings:

Fig. 1-minor diameter movable joint structure schematic representation 1

Fig. 2-minor diameter movable joint structure schematic representation 2

Fig. 3-minor diameter high-pressure movable joint structural representation

Fig. 4-major diameter movable joint structure schematic representation

In the accompanying drawing:

1---negative joint body 2---male connector body 3---seal ring

4---adapter sleeves 5---are coupled pipe

Embodiment:

Thermoelectricity plant's high temperature (≤400 ℃), middle pressure (≤245 * 10 ⁴Pa), minor diameter pipeline union.

As shown in Figure 2: fittings body is to adopt the charcoal forging to make to form.The adapter sleeve internal surface has annular tooth, smooth outer surface, first taper in end face becomes greatly.Special the forming of seal ring employing * B450 rubber asbestos, outer first taper that its both ends of the surface are all at 45.

Concrete installation process is as follows: according to orientation shown in Figure 2, earlier negative joint body 1 is connected same adapter sleeve 4, male connector body 2 together with another adapter sleeve 4, be enclosed within respectively on the two tubes 5 that is coupled, then seal ring 3 is enclosed within on the pipe.After treating that pipe is in place, it is middle to shift seal ring onto two pipes, two fittings bodies of last fastening negative and positive, thus reach purpose fastening, that sealing two velamens connect pipe.

Advantage of the present utility model:

1, this pipe union is compared with articulation with used flange, during installation, Do not need welding, need to be on pipe yet mantle fiber, directly insert in the joint, fastening Fittings body can be finished. Save man-hour, improve work efficiency, reduce labor strength, In addition, improve sealing, easy to maintenance.

2, this pipe union only changes encapsulant, just can be suitable for different operating modes, Change the fittings body connection form and just can be applicable to the different-diameter pipe, be convenient to product variety Unification, standardization and seriation is convenient to organize specialized batch production.

3, this pipe union compact conformation, in light weight, low cost of manufacture.

Claims

Pipe is without the direct insertion loose joint pipe fitting of mantle fiber during a kind of the installation, it is characterized in that by a negative joint body, a male connector body, a seal ring and two adapter sleeves are formed, and seal ring is arranged in the male connector body, and both sides respectively are furnished with an adapter sleeve, during installation two tubes is inserted in the seal ring, and make the two tubes seam be in the neutral position of seal ring, and tighten the male and female connector body then, can be with two tubes sealing and fastening.