CN213655955U

CN213655955U - A new type of pipeline transfer structure

Info

Publication number: CN213655955U
Application number: CN202022021633.4U
Authority: CN
Inventors: 尹传娟
Original assignee: Yunnan University of Finance and Economics
Current assignee: Yunnan University of Finance and Economics
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-07-09
Anticipated expiration: 2030-09-16

Abstract

The utility model proposes a novel pipeline transfer structure, which comprises a transfer pipe, a locking end cover and a bidirectional seal. The outer circles of the two ends of the transfer pipe are provided with external threads, and the inner circumference of the two ends of the transfer pipe is provided with external threads. There is a sealing groove, the inner ring surface of the locking end cap is provided with an inner thread, and the two locking end caps are respectively adapted to the two ends of the transfer tube and connected by threads; the inner holes at both ends of the transfer tube and the The inner hole of the locking end cap is adapted to the pipe, and the two-way seal is press-fitted between the locking end cap and the end face of the adapter tube, and the two-way seal realizes radial sealing with the pipe and locking with the The end caps are face sealed. The utility model has the advantages of simple structure, reliable sealing, convenient installation, no need for pipe cutting and thread processing on the maintenance site, quick maintenance of the pipe, and strong applicability; and the connecting thread is not in contact with the liquid in the pipe, which is convenient for the maintenance of the pipe joint thread maintainance.

Description

Novel pipeline switching structure

Technical Field

The utility model relates to a civilian and industrial pipeline connection technique especially relates to a novel pipeline switching structure.

Background

At present, most of civil and industrial pipelines are formed by connecting pipelines with certain lengths through pipe joints, the pipelines are usually in threaded connection with the pipe joints, and an anticorrosive coating on the outer surface of a thread is easy to damage during assembly, so that the thread is easy to corrode in water after being soaked for a long time, and phenomena such as perforation and leakage are generated. If the pipe joint to the seepage maintains, need professional maintenance workman to pull down the pipe joint to the rust position of the former screw thread of excision pipeline, then the special threading die processing new connecting thread of reuse pipeline, the pipe joint of standard this moment is shorter, needs two standard pipe joints to connect both ends pipeline, and increases the pipeline of a corresponding length between the pipe joint and connect. The disadvantages of such maintenance are: 1. require specialized maintenance workers; 2. a large operating space is required; 3. and a threaded connection link is added, and the sealing performance of the pipeline is reduced.

SUMMERY OF THE UTILITY MODEL

The weak point to prior art, the utility model provides a novel pipeline switching structure, its simple structure, simple to operate need not carry out the pipeline excision and carry out screw thread processing through the special die of pipeline at the maintenance scene, pipeline easy maintenance, swift.

In order to achieve the above purpose, the utility model provides a technical scheme is: a novel pipeline switching structure comprises a switching pipe, locking end covers and two-way sealing pieces, wherein external threads are arranged on the excircles of two end parts of the switching pipe, sealing grooves are arranged on the inner circumference opening parts of two ends of the switching pipe, internal threads are arranged on the inner ring surfaces of the locking end covers, and the two locking end covers are respectively matched with two ends of the switching pipe and are connected through threads; the two-way sealing piece is arranged between the end faces of the locking end cover and the adapter tube in a pressing mode, and the two-way sealing piece is sealed with the pipeline in a radial direction and the end face of the locking end cover.

The utility model discloses a novel pipeline switching structure convenient to dismouting, this switching structure adopt general sealed mode, realize the radial seal and the end face seal of switching device and pipeline through two way seal spare, and the frictional force restriction switching device that produces with the pipeline surface when utilizing two way seal spare to compress tightly simultaneously is not hard up on the pipeline. After the locking end cover is screwed in place, the end faces of the two sides of the bidirectional sealing element respectively form end face sealing with the adapter tube and the end face of the locking end cover, the inner surface of the bidirectional sealing element forms radial sealing with the outer surface of the pipeline, and the sealing structure is reliable. Like this when the pipeline maintenance, need not get rid of the pipeline corrosion position and repair the pipeline terminal surface at the maintenance scene, the special die of rethread pipeline carries out screw thread processing, direct mount the utility model discloses can, pipeline easy maintenance, swift.

Further, the axial depth of the seal groove is greater than the thickness of the bidirectional seal. The thickness of the bidirectional sealing element is slightly larger than the depth of the sealing groove, so that the bidirectional sealing element is extruded and deformed by the pressure of the end face of the locking end cover in the screwing process of the locking end cover, and radial sealing and end face sealing are formed after the locking end cover is screwed in place.

Further, as an embodiment, the cross-sectional shapes of the sealing groove and the bidirectional sealing member are right trapezoid, and the inclined surface and the large end of the right trapezoid face outward. An inclined surface component force can be generated between the trapezoidal bidirectional sealing element and the sealing groove, the bidirectional sealing effect is better, and the bidirectional sealing device is suitable for pipelines in larger pressure environments.

Further, as another embodiment of the low-pressure use environment, the bidirectional sealing element is an O-ring.

Further, as an optimized embodiment, the inner diameter of the bidirectional sealing element is smaller than the outer diameter of the pipeline, the two are in tight fit, and the inner diameter of the locking end cover is in small clearance fit with the outer diameter of the pipeline.

Furthermore, in order to facilitate the assembly and disassembly operation, the outer circumferential surface of the locking end cover is provided with knurls and wrench flat openings.

To sum up, the beneficial effects of the utility model are that: the pipeline cutting device has the advantages of simple structure, reliable sealing, convenient installation, no need of pipeline cutting in a maintenance site and thread machining through the special threading die for the pipeline, quick pipeline maintenance and strong applicability; and the connecting thread is not contacted with the liquid in the pipeline, so that the maintenance of the adapter joint thread is convenient.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the embodiment of the bi-directional seal of fig. 1.

Fig. 3 is a usage state diagram of the present invention.

Fig. 4 is a schematic view of the assembly process of the present invention.

Fig. 5 is a schematic structural view of the minimum limit position of the present invention installed in place.

Detailed Description

As shown in fig. 1 to 3, a novel pipeline switching structure includes a switching tube 1, a locking end cover 2 and a bidirectional sealing member 3, wherein outer threads 1 are arranged on the outer circles of two ends of the switching tube 1, sealing grooves 11 are arranged on the inner circumference openings of two ends of the switching tube 1, the sealing grooves 11 are cone-ring shaped, and the large end of the cone ring surface of the sealing groove 11 is located in the end surface direction of the switching tube 1; the locking end covers 2 are provided with bottom surfaces and circumferential surfaces, internal threads are arranged on inner ring surfaces of the circumferential surfaces, and the two locking end covers 2 are respectively matched with two ends of the adapter tube 1 and are connected through the threads. The inner holes at the two ends of the adapter tube 1 and the inner holes on the bottom surface of the locking end cover 2 are matched with the pipeline 4, and the inner diameter of the inner hole of the locking end cover 2 is in small clearance fit with the outer diameter of the pipeline. And a bidirectional sealing element 3 is arranged between the locking end cover 2 and the end face of the adapter tube 1 in a pressing mode, and the bidirectional sealing element 3 realizes radial sealing with the pipeline 4 and end face sealing of the locking end cover 2.

The cross section of the bidirectional sealing element 3 is matched with the sealing groove 11 and is in a right trapezoid shape, the inclined plane and the large end of the right trapezoid face the outer side, inclined plane component force can be generated between the trapezoidal bidirectional sealing element 3 and the sealing groove 11, the bidirectional sealing effect is better, and the bidirectional sealing device is suitable for pipelines with larger pressure environments. The axial depth of the seal groove 11 is greater than the thickness of the bidirectional seal 3. The thickness of the bidirectional sealing element 3 is slightly larger than the depth of the sealing groove 11, so that the bidirectional sealing element 3 is extruded and deformed by the pressure of the end face of the locking end cover 2 in the screwing process of the locking end cover 2, and radial sealing and end face sealing are formed after the locking end cover 2 is screwed in place. The internal diameter of two-way sealing member 3 is less than the external diameter of pipeline 4, both form the tight fit, the frictional force restriction that two-

way sealing member

3 and 4 surface productions of pipeline the utility model discloses switching device produces not hard up on the pipeline.

In order to facilitate the assembly and disassembly operation, the outer circumferential surface of the locking end cover 2 is provided with knurls and wrench flat openings, and if the pressure in the water pipe is small, the water pipe can be directly screwed by hands; if the pressure in the water pipe is larger, the water pipe can be screwed by a conventional wrench, and the water pipe is easy and convenient to assemble and disassemble.

For the use condition of small pressure in the pipe, the bidirectional sealing element 3 can adopt a common O-shaped sealing ring, and the sealing groove 11 is also a matched annular groove.

As shown in fig. 4 and 5, the assembly process of the present invention is: the outer surface of the installation of the pipeline 4 is cleaned, the separated locking end covers 2 and the two-way sealing elements 3 are sequentially arranged in the pipelines 4 at two ends, the distance L1 between the two-way sealing element 3 at one end and the port of the pipeline 4 is greater than the length L2 of the adapter tube 1, then the adapter tube 1 is sequentially arranged towards one end of the pipeline 4, after the gap L3 exists between the tail end of the adapter tube 1 and the port of the other pipeline 4, the tail end of the adapter tube 1 is reversely arranged in the other pipeline 4, and the length L4 that the end of the adapter tube 1 extends into the port of the other pipeline 4 is not less than 5mm (shown in figure 5). And finally, moving the two-way sealing elements 3 at the two ends of the pipeline 4 into the corresponding sealing grooves 11 of the adapter tube 1, and screwing the locking end cover 2 in place. Otherwise, the disassembly process is as follows: when the pipe adaptor is detached, the locking end cover 2 is detached firstly, then the pipe adaptor 1 is moved towards one end of the pipeline 4, and after a gap is reserved between the tail end of the pipe adaptor 1 and the port of the other pipeline 4, the pipe adaptor 1 is detached from the pipeline 4.

The utility model discloses a two-way sealing member 3 realizes switching device and pipeline 4's radial seal and end face seal, and seal structure is reliable, need not carry out thread machining at the maintenance scene, direct mount, pipeline easy maintenance, swift.

The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A novel pipeline transfer structure is characterized in that: it comprises a transfer pipe, a locking end cap and a bidirectional seal, the outer circle of both ends of the transfer pipe is provided with external threads, and the inner circumference of the two ends of the transfer pipe is provided with an outer thread. A sealing groove is provided, the inner ring surface of the locking end cap is provided with an inner thread, and the two locking end caps are respectively adapted to the two ends of the transfer tube and connected by threads; the inner holes at both ends of the transfer tube are It is matched with the inner hole of the locking end cover and the pipe, and the two-way seal is press-fitted between the locking end cover and the end face of the adapter pipe, and the two-way seal realizes the radial sealing with the pipe and the End face seal with tight end cap.

2 . The novel pipe transfer structure according to claim 1 , wherein the axial depth of the sealing groove is greater than the thickness of the bidirectional seal. 3 .

3 . The novel pipeline transfer structure according to claim 1 , wherein the cross-sectional shape of the sealing groove and the bidirectional seal is a right-angled trapezoid, and the inclined surface and the large end of the right-angled trapezoid face outward. 4 .

4. The novel pipeline transfer structure according to claim 1, wherein the two-way seal is an O-ring.

5 . The new type of pipeline transfer structure according to claim 1 , wherein the inner diameter of the two-way seal is smaller than the outer diameter of the pipeline, and the two form a tight fit, and the inner diameter of the locking end cap and the outer diameter of the pipeline are formed. 6 . Small clearance fit between diameters.

6 . The novel pipe transfer structure according to claim 1 , wherein the outer circumferential surface of the locking end cap is provided with knurling and a flat wrench. 7 .