CN111457176A

CN111457176A - Pipeline connecting and sealing device for conveying fluid

Info

Publication number: CN111457176A
Application number: CN202010369290.2A
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: 2020-07-28

Abstract

The patent relates to a pipeline connecting and sealing device for conveying fluid; the method comprises the following steps of adopting parts such as 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, a gasket and the like to radially connect two butted pipelines and seal the pipelines to prevent 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

This patent relates to the field of fluid transport, in particular to fluid transport pipes

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 and the like. 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 use of the detailed description of the patent, reference will now be made to the detailed description or to the accompanying drawings, which are required in the description of the prior art. It is obvious that the drawings in the following description are some embodiments of the patent, and that for a person skilled in the art, other drawings can be derived from these drawings without inventive effort.

Fig. 1 is a schematic diagram of the overall structure of the patent.

Fig. 2 is a schematic view of the pipe of the connecting pipeline and the connecting groove and the sealing groove machined at two ends of the connecting pipeline.

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 pipes; 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 following is a clear and complete description of this patent with reference to the drawings. It is understood that the embodiments described are only a few embodiments of the present patent, and that other embodiments obtained by those skilled in the art without the use of inventive faculty are within the scope of the patent.

In the description of this patent, it is noted that the terms "center", "left", "right", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the patent and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be configured to operate in a particular orientation, and thus should not be construed as limiting the patent. 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 this patent, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "restrained" are to be construed broadly, e.g., as a fixed connection, a removable connection, or other connection integrally 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 meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

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

Examples

This patent provides a fluid pipeline connection mode, refer to fig. 1, and this embodiment is to use butt joint card key (3) to connect two seamless steel pipes (1) and restrict the movement of two pipes in the left and right direction. 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 be reduced, so that the phenomenon of biasing pressure response type sealing (4) due to the action of bending moment is generated at the connection position due to overlarge gap, 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), a gasket (9) and other parts, wherein the pipe is sealed while the two butted pipes are radially connected to prevent 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 convenient for rigid connection long-distance liquid supply pipelines, is reliable in sealing and difficult to damage, is convenient to produce and process, does not damage pipelines when being processed into connecting grooves, is high in compressive strength, and does not reduce the inner drift diameter of the pipelines.

2. The seamless steel pipe (1) according to claim characterized in that:

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

3. Pipe sleeve (2) according to the preceding claim, characterized in that:

the pipe sleeve is internally provided with a groove for installing a pressure response type seal (4), a guide liner (5) and an O-shaped ring (6).

4. The docking catch (3) according to claim, characterized in that:

the semi-ring structure, every is inside to have 2 draw-in grooves, can be used for blocking seamless steel pipe (1) head slot respectively, and every set of butt joint card key (3) adopts two to embrace seamless steel pipe (1) to.

5. The pressure-responsive seal (4) of claim wherein:

the pressure response type seal (4) adopts a pressure response type, and the sealing effect is better when the pressure of the internal closed fluid is higher and the pressure between the seamless steel pipe (1) and the pipe sleeve (2) is higher.