CN213040019U

CN213040019U - Pipeline connecting and sealing device for conveying fluid

Info

Publication number: CN213040019U
Application number: CN202020710646.XU
Authority: CN
Inventors: 娄军辉; 石向红; 林海涛
Original assignee: Haihui Technology Taiyuan Co ltd
Current assignee: Haihui Technology Taiyuan Co ltd
Priority date: 2020-05-04
Filing date: 2020-05-04
Publication date: 2021-04-23
Anticipated expiration: 2030-05-04

Abstract

The utility model relates to a pipeline connecting and sealing device for conveying fluid; the pipe joint is composed of a seamless steel pipe, a pipe sleeve, a butt joint clamping key, a pressure response type seal, a guide lining, an O-shaped ring, a pipe sleeve limiting block, a fixing bolt and a gasket. The two butted pipelines are radially connected and simultaneously sealed to prevent internal fluid from leaking; the structure is high pressure resistant, can be used for pipeline connection of various pipe diameters, is convenient to install and connect, is convenient to replace and seal, is particularly reliable and not easy to damage for rigid connection long-distance liquid supply pipelines, is convenient to produce and process, does not damage the pipelines when being processed into connecting grooves, is high in compressive strength, and does not reduce the inner drift diameter of the pipelines.

Description

Pipeline connecting and sealing device for conveying fluid

Technical Field

The utility model relates to the fluid transportation field specifically to fluid conveying pipeline

Background

The existing fluid conveying pipeline has the following connection modes: 1. threaded connections are mainly used for low-pressure pipes. 2. The flange connection is large in size, the flange needs to be welded on the pipe head, the assembly operation is complex, and the pressure resistance is low. 3. Socket joint connects, needs the pipe to insert sealing connection, if hard pipe is inserted, is difficult for changing sealedly, needs the tube head to process primary and secondary to the jack simultaneously. 4. The clamp type groove connection needs a clamp piece, the clamp is a split clamp, and the requirement on the clamp machining precision is high; the pipe head needs to be processed with a groove, and if the groove is processed in a pressing mode, the inner drift diameter of the pipeline is influenced; if the vehicle-made groove is adopted, the wall thickness of the pipe can be influenced to weaken the pressure resistance of the pipeline, the installation requirement is high, and the seal is easy to damage or the seal position leaks. 5. The cutting sleeve type connector is firm in connection, high-pressure resistant and good in sealing performance, but only can be applied to small-diameter pipelines and cannot be used for large-diameter pipelines.

The existing connection modes of the fluid pipelines can not realize convenient installation, replacement and maintenance, and can not adapt to the connection of various pressure grade seals and various pipe diameters.

Disclosure of Invention

The invention discloses a novel pipeline connecting device which is composed of a seamless steel pipe, a pipe sleeve, a butt joint clamping key, a pressure response type seal, a guide lining, an O-shaped ring, a pipe sleeve limiting block, a fixing bolt and a gasket. The structure is high pressure resistant, can be used for connecting pipelines with various pipe diameters, and is convenient to install and connect and convenient to replace and seal. Especially for some liquid supply pipelines which are rigidly connected and have long distance, the sealing is reliable, the damage is not easy, the processing is convenient, the connecting groove does not damage the pipeline, the compression strength is high, and the inner drift diameter of the pipeline is not reduced.

Drawings

In order to more clearly illustrate the utility of the present invention using the embodiments, the following description briefly describes the embodiments or the drawings that are needed to be used in the prior art description. It is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

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

Fig. 2 is a schematic view of the seamless steel pipe of the present invention.

Fig. 3 is a schematic view of a pipe sleeve.

Fig. 4 is a schematic view of a docking key.

Reference numerals indicate the same.

1-seamless steel pipe; 2-pipe sleeve; 3-butt joint clamping key; 4-pressure responsive sealing; 5-a guide liner; 6-O-shaped ring; 7-a pipe sleeve limiting block; 8-fixing the bolt; 9-pad

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings. It is obvious that the described embodiments are some, not all embodiments of the present invention, and other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "left", "right", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element to be referred to must have a characteristic orientation, be configured to operate in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "limited" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or other connections integrally formed therewith; the two original pieces can be directly connected or indirectly connected through an intermediate medium, or the interiors of the two original pieces are communicated; the limit can be limited by a limit block or by a set screw. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The utility model provides a fluid pipeline connected mode, refer to fig. 1, and this embodiment adopts butt joint card key (3) to connect two seamless steel pipes (1) and restricts the removal of two pipes left and right directions. The pipe sleeve (2) is used for limiting the movement of the front and back upper and lower positions of the two pipes, and meanwhile, a pressure response type seal (4) is arranged in the pipe sleeve (2) and used for sealing fluid in the pipeline from being leaked. The guide bush (5) is arranged in the pipe sleeve (2) and used for limiting the gap between the pipe sleeve (2) and the seamless steel pipe (1) to reduce the phenomenon that the pressure response type sealing (4) is biased due to the action of bending moment at the connection position because the gap is too large, and the guide bush also plays a role in guiding when being installed. An O-shaped ring (6) is arranged in the pipe sleeve (2) for dust prevention. The pipe sleeve limiting block (7) is used for limiting the pipe sleeve (2) left and right, the pipe sleeve limiting block (7) is fixed by a fixing bolt (8) and a liner (9), and the pipe sleeve (2) can be limited by a set screw.

Claims

1. A fluid carrying pipe coupling and sealing apparatus comprising:

the device comprises a seamless steel pipe (1), a pipe sleeve (2), a butt joint clamping key (3), a pressure response type seal (4), a guide lining (5), an O-shaped ring (6), a pipe sleeve limiting block (7), a fixing bolt (8) and a gasket (9);

the device is mainly used for connecting two butted pipes and sealing the pipeline to prevent fluid in the pipeline from leaking outwards;

the method is characterized in that: two seamless steel pipes (1) for conveying fluid are axially aligned and clamped inside a connecting groove at the head of each seamless steel pipe (1) by two butt joint clamping keys (3) to complete connection; the pipe sleeve (2) internally provided with the pressure response type seal (4), the guide bush (5) and the O-shaped ring (6) is pushed to a connecting position, and the pressure response type seal (4) is arranged outside two sides of the connected butt joint clamping key (3); the pipe sleeve (2) and the pressure response type seal (4) in the pipe sleeve (2) play a role in sealing fluid in the pipeline and preventing the fluid from leaking, and the pipe sleeve (2) limits the butt joint clamping key (3) from escaping from a connecting groove at the head of the seamless steel pipe (1); the connection and sealing device can be connected without other auxiliary equipment so as to conveniently complete connection and sealing; the pipeline connecting and sealing device adopts devices with corresponding pipe diameters according to different pipe diameters; the pressure-responsive seal (4) can be used in various pressure-level fluid conveying pipelines.

2. The connecting and sealing device for pipelines for transporting fluids according to claim 1, wherein the seamless steel pipe (1) is structured as follows:

the two ends of the seamless steel pipe (1) are provided with grooves for installing the butt joint clamping keys (3).

3. A fluid-carrying pipe-connecting and sealing device as claimed in claim 1, wherein said sleeve (2) is structured as:

symmetrical grooves are formed in the pipe sleeve (2) and used for mounting the pressure response type seal (4), the guide bush (5) and the O-shaped ring (6).

4. A fluid-carrying pipe coupling and sealing device as claimed in claim 1, wherein said docking catch (3) is configured as:

the inner side surface of the butt joint clamping key (3) is provided with symmetrical clamping grooves for connecting two pieces of seamless steel pipes (1) aligned in an axis mode.

5. A pipe coupling and sealing device for conveying fluids according to claim 1, wherein said pressure-responsive seal (4) is characterized by:

the pressure response type seal (4) adopts pressure seal, the higher the pressure of the internal closed fluid is, the tighter the pressure is between the seamless steel pipe (1) and the pipe sleeve (2), and the better the sealing effect is; the pressure response type seal (4) is arranged inside the pipe sleeve (2), after the two pressure response type seals (4) are arranged in place, the pressure response type seals (4) are sealed together with the seamless steel pipe (1) and the pipe sleeve (2) at the positions of the two sides of the butt joint clamping key (3), and fluid inside the closed pipeline does not leak.