CN213236421U

CN213236421U - Pipeline connecting structure

Info

Publication number: CN213236421U
Application number: CN202021804396.2U
Authority: CN
Inventors: 张勇
Original assignee: Jiangsu Chnv Instrument Control Engineering Co ltd
Current assignee: Jiangsu Chnv Instrument Control Engineering Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-05-18
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a pipeline connecting structure, which comprises a screwed pipe, a double-through body, a screw thread pressing sleeve, a pressing sleeve bolt and an elastic backing ring, wherein the screwed pipe is provided with a connecting end, and the end part of the connecting end is a conical surface end; a liquid channel is formed in the double-way body along the length direction of the double-way body, a threaded hole is formed in the side part, corresponding to the liquid channel, of the double-way body, and the tapered hole is communicated with the liquid channel; the outer end of the thread pressing sleeve is also sleeved with a pressing sleeve bolt through threads, an elastic cushion ring is arranged between the inner cavity wall of the pressing sleeve bolt and the thread pressing sleeve, and when the pressing sleeve bolt and the thread pressing sleeve are assembled and matched, the elastic cushion ring is extruded, and the generated elastic action acts on the thread pressing sleeve, so that the inner thread and the outer thread of the thread pressing sleeve are tensioned, and the firmness of the pressing sleeve is greatly improved; the end part of the threaded pipe connecting end is a conical surface end which can be pressed and abutted in the conical hole of the double-way body under the action of the threaded pressing sleeve, and a conical sealing surface with a larger area is formed between the conical surface end and the conical hole, so that the sealing performance of the threaded pipe connecting end is improved.

Description

Pipeline connecting structure

Technical Field

The utility model relates to a coupling field, concretely relates to pipeline connection structure.

Background

The existing ultrahigh pressure pipe joint in the market comprises the following components: the device comprises a double-way body, a pressing sleeve bolt, a high-pressure joint and a seamless steel pipe; when in connection, the seamless steel pipe and the high-pressure joint are welded, and the high-pressure joint is tightly pressed and connected to the two connecting channels by using bolts;

however, as the pressure of the equipment operation requirements is continuously increased, the use environment is more and more complicated, and the connection mode cannot meet all the use requirements; in particular, the pressure sleeve bolt is easy to loosen during the long-time operation of the equipment, so that leakage is caused.

Therefore, how to solve the defects of the prior art is a subject of the present invention.

Disclosure of Invention

In order to solve the above problem, the utility model discloses a pipeline connecting structure.

In order to achieve the above purpose, the utility model provides a following technical scheme: a pipeline connecting structure comprises a threaded pipe, a double-through body, a threaded pressing sleeve, a pressing sleeve bolt and an elastic backing ring, wherein the threaded pipe is provided with a connecting end, and the end of the connecting end is a conical end;

a liquid channel is arranged in the double-way body along the length direction of the double-way body, a threaded hole is arranged on the side part of the double-way body corresponding to the liquid channel, a conical hole matched with the end of the conical surface is arranged on the bottom surface of the threaded hole, and the conical hole is communicated with the liquid channel;

the threaded pressing sleeve is sleeved on the connecting end of the threaded pipe through threads;

a thread perforation is formed in the pressing sleeve bolt along the length direction of the pressing sleeve bolt, and a circle of pressing ring is convexly arranged at one end of the thread perforation;

the utility model discloses a screw thread, including threaded pipe, screw thread, elastic cushion ring, supporting ring, set, screw thread, set, elastic cushion ring, screw thread, set.

As an improvement of the utility model, the one end of cushion ring is equipped with the round to the evagination and supports and press the inclined plane, the other end of cushion ring is equipped with round effect inclined plane to the indent, support on the clamping ring to the indent be equipped with the round with support and press the first cooperation inclined plane of inclined plane complex, the screw thread is pressed and is overlapped and is gone up to correspond the effect inclined plane is evaginated and is equipped with round second cooperation inclined plane, first cooperation inclined plane is supported and is pressed on supporting and pressing the inclined plane, the effect inclined plane is supported and is pressed on second cooperation inclined plane.

As an improvement of the present invention, the inclination of the pressing inclined plane and the acting inclined plane relative to the horizontal plane is equal to the inclination of the horizontal plane.

As an improvement of the utility model, the set bolt epirelief is equipped with the round spacing ring, the spacing ring supports and leans on the bipartite body.

Compared with the prior art, the utility model has the advantages of as follows: the utility model discloses pipeline connection structure's screw thread pressure cover is established on the connecting end of screwed pipe through the screw thread cover, and the outer end of screw thread pressure cover is also established through the screw thread cover and is pressed the cover bolt, is provided with the elastic backing ring between the inner chamber wall of pressing the cover bolt and the screw thread pressure cover, and the inside and outside of screw thread pressure cover all has the threaded connection structure promptly, and during the assembly cooperation, the elastic backing ring receives the extrusion, and the elastic action that produces acts on the screw thread pressure cover, makes the inside and outside twice screw thread tensioning of screw thread pressure cover, has improved its fastness greatly; the end part of the threaded pipe connecting end is a conical surface end which can be pressed and abutted in the conical hole of the double-way body under the action of the threaded pressing sleeve, and a conical sealing surface with a larger area is formed between the conical surface end and the conical hole, so that the sealing performance of the threaded pipe connecting end is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a threaded pipe;

FIG. 3 is a schematic structural view of a twin body;

FIG. 4 is a schematic structural view of a threaded press sleeve;

FIG. 5 is a schematic structural view of a press stud;

fig. 6 is a schematic structural view of the elastic backing ring.

List of reference numerals: 100 threaded pipes, 101 connecting ends, 102 conical ends, 200 double-through bodies, 201 liquid channels, 202 threaded holes, 203 conical holes, 300 threaded pressing sleeves, 301 second matching inclined planes, 400 pressing sleeve bolts, 401 threaded through holes, 402 pressing rings, 403 first matching inclined planes, 404 limiting rings, 500 elastic cushion rings, 501 pressing inclined planes and 502 acting inclined planes.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b): referring to fig. 1 to 6, a pipe connection structure includes a threaded pipe 100, a double-body 200, a threaded press sleeve 300, a press sleeve bolt 400 and an elastic backing ring 500, the threaded pipe 100 having a connection end 101, the end of the connection end 101 being a tapered end 102;

a liquid channel 201 is arranged in the double-through body 200 along the length direction, a threaded hole 202 is arranged in the double-through body 200 corresponding to the side part of the liquid channel 201, a tapered hole 203 matched with the conical end 102 is arranged on the bottom surface of the threaded hole 202, and the tapered hole 203 is communicated with the liquid channel 201;

the threaded pressing sleeve 300 is sleeved on the connecting end 101 of the threaded pipe 100 through threads;

a thread through hole 401 is formed in the pressing sleeve bolt 400 along the length direction of the pressing sleeve bolt, and a circle of pressing ring 402 is convexly arranged at one end of the thread through hole 401;

the elastic cushion ring 500 is sleeved on the connecting end 101 of the threaded pipe 100, the connecting end 101 of the threaded pipe 100 penetrates through the threaded through hole 401, the conical end 102 extends out of the threaded through hole 401, the threaded pressing sleeve 300 and the elastic cushion ring 500 are both positioned in the threaded through hole 401, one end of the elastic cushion ring 500 abuts against the pressing ring 402, the other end of the elastic cushion ring abuts against the threaded pressing sleeve 300, the outer wall of the threaded pressing sleeve 300 is in threaded sealing fit with the threaded through hole 401, the pressing sleeve bolt 400 is screwed into the threaded hole 202 of the double-pass body 200 through threads, and the conical end 102 is inserted into the conical hole 203 and is in sealing fit with the hole wall of the conical hole 203;

the outer end of the thread pressing sleeve 300 is also sleeved with a pressing sleeve bolt 400 through a thread, an elastic cushion ring 500 is arranged between the inner cavity wall of the pressing sleeve bolt 400 and the thread pressing sleeve 300, namely, the inner surface and the outer surface of the thread pressing sleeve 300 are both provided with a thread connecting structure, when the assembly and the assembly are carried out, the elastic cushion ring 500 is extruded, the generated elastic action force acts on the thread pressing sleeve 300, so that the inner thread and the outer thread of the thread pressing sleeve 300 are tensioned, and the firmness of the thread pressing sleeve is greatly improved; the end part of the connecting end 101 of the threaded pipe 100 is a conical end 102 which can be pressed and abutted against the conical hole 203 of the double-way body 200 under the action of the threaded pressing sleeve 300, and a conical sealing surface with a larger area is formed between the two, so that the sealing performance of the threaded pipe is improved;

one end of the elastic cushion ring 500 is provided with a circle of pressing inclined plane 501 outwards in a protruding manner, the other end of the elastic cushion ring 500 is provided with a circle of acting inclined plane 502 inwards in a recessed manner, the pressing ring 402 is provided with a circle of first matching inclined plane 403 matched with the pressing inclined plane 501 inwards in a recessed manner, the thread pressing sleeve 300 is provided with a circle of second matching inclined plane 301 outwards in a protruding manner corresponding to the acting inclined plane 502, the first matching inclined plane 403 is pressed on the pressing inclined plane 501 in a pressing manner, and the acting inclined plane 502 is pressed on the second matching inclined plane 301 in a pressing manner; the inclination of the pressing inclined plane 501 and the action inclined plane 502 relative to the horizontal plane is 45 degrees; the arrangement of the plurality of inclined planes enables the elastic backing ring 500 to form a larger sealing surface in the pressing fit process of the first fit inclined plane 403, so that the whole sealing performance of the elastic backing ring is improved, meanwhile, the arrangement of the 45-degree inclined planes can form horizontal and vertical component forces in the stress process, the elastic backing ring 500 can generate acting forces in two directions, and the connection fit of the elastic backing ring is firmer.

The pressing sleeve bolt 400 is convexly provided with a circle of limiting ring 404, the limiting ring 404 is abutted against the double-way body 200, the limiting effect can be achieved, and the quick positioning in the connection matching process is facilitated.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A pipe connection structure characterized in that: the threaded pipe comprises a threaded pipe (100), a double-pass body (200), a threaded pressing sleeve (300), a pressing sleeve bolt (400) and an elastic backing ring (500), wherein the threaded pipe (100) is provided with a connecting end (101), and the end of the connecting end (101) is a conical end (102);

a liquid channel (201) is formed in the double-through body (200) along the length direction of the double-through body, a threaded hole (202) is formed in the double-through body (200) corresponding to the side portion of the liquid channel (201), a tapered hole (203) matched with the tapered end (102) is formed in the bottom surface of the threaded hole (202), and the tapered hole (203) is communicated with the liquid channel (201);

the threaded pressing sleeve (300) is sleeved on the connecting end (101) of the threaded pipe (100) through threads;

a threaded through hole (401) is formed in the pressing sleeve bolt (400) along the length direction of the pressing sleeve bolt, and a circle of pressing ring (402) is convexly arranged at one end of the threaded through hole (401);

elastic cushion ring (500) cover is established on link (101) of screwed pipe (100), link (101) of screwed pipe (100) are passed the screw thread is perforated (401), conical surface end (102) stretch out to the outside that the screw thread was perforated (401), screw thread pressure cover (300) and elastic cushion ring (500) all are located in screw thread is perforated (401), the one end of elastic cushion ring (500) is supported and is leaned on and support ring (402), and its other end supports and support on screw thread pressure cover (300), the outer wall of screw thread pressure cover (300) with screw thread perforation (401) pass through the screw thread sealing cooperation, the screw thread screw in of passing through of pressure cover bolt (400) is in screw hole (202) of bi-pass body (200), conical surface end (102) insert in conical hole (203) to with the sealed laminating of pore wall of conical hole (203).

2. A pipe connecting structure according to claim 1, wherein: the one end of elasticity backing ring (500) is equipped with the round outwards protrudingly and supports and press inclined plane (501), the other end of elasticity backing ring (500) is equipped with round effect inclined plane (502) to the indent, support on clamping ring (402) to the indent be equipped with the round with support and press inclined plane (501) complex first cooperation inclined plane (403), the screw thread is pressed and is overlapped (300) and is gone up to correspond effect inclined plane (502) are equipped with round second cooperation inclined plane (301) to the evagination, first cooperation inclined plane (403) are supported and are pressed on pressing inclined plane (501), effect inclined plane (502) are supported and are pressed on second cooperation inclined plane (301).

3. A pipe connecting structure according to claim 2, wherein: the inclination of the pressing inclined plane (501) and the inclination of the acting inclined plane (502) relative to the horizontal plane are both 45 degrees.

4. A pipe connecting structure according to claim 1, wherein: the pressing sleeve bolt (400) is convexly provided with a circle of limiting ring (404), and the limiting ring (404) abuts against the double-through body (200).