CN111998149A - Pressure pipeline connecting and sealing device for conveying fluid - Google Patents

Abstract

The invention is a pressure pipeline connecting and sealing device for conveying fluid; the pipe sleeve, the butt joint clamping key, the pressure response type seal, the guide lining, the clamping key, the clamping sleeve limiting device and other parts are adopted to carry out radial connection on the seamless pipe with the groove machined at the head part of the two butt joints, and meanwhile, the pipeline is sealed 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, has the advantages of being safe and reliable in sealing, not easy to damage, convenient to produce and process, free from damage to the pressure-resistant strength of the pipeline when the connecting groove is machined, free from reducing the inner drift diameter of the pipeline and the like particularly for rigid connection long-distance liquid supply pipelines.

Description

Pressure pipeline connecting and sealing device for conveying fluid

Technical Field

The invention relates to the field of fluid transportation, in particular to a fluid transportation pipeline.

Background

The existing fluid conveying pipeline has the following connection modes: 1. and (3) threaded connection: the method is mainly used for low-pressure pipelines. 2. Flange connection: the volume is large, flanges need to be welded on the tube head, the assembly operation is complex, and the pressure resistance is low. 3. Socket connection: the pipes are required to be oppositely inserted and sealed, if the pipes are hard, the sealing is not suitable to be replaced, and the pipe heads are required to be processed into primary and secondary opposite insertion holes. 4. The clamp type groove connection: a clamp part is needed, the clamp is a split clamp, and the requirement on the clamp processing 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. Cutting ferrule formula connector: firm in connection, high pressure resistant, sealing performance is good, but can only use the pipeline of little pipe diameter, can not be used to big latus rectum pipeline.

The existing connection modes of the fluid pipelines can not only realize convenient installation, replacement and maintenance, but also adapt to the sealing of various pressure grades and the connection of various pipe diameters.

Disclosure of Invention

The invention discloses a novel pipeline connecting device. The device comprises a seamless pipe with a groove processed at the head, a pipe sleeve, a butt joint clamping key, a pressure response type seal, a guide lining, a clamping key for limiting the pipe sleeve, a clamping sleeve limiting device 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 for a long distance, the sealing is reliable, the damage is not easy, the processing is convenient, the pressure-resistant strength of the pipeline is not damaged by the connecting groove, and the inner drift diameter of the pipeline is not reduced.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings used in the detailed description or the prior art descriptions will be briefly described below. 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 general structure of the present invention.

FIG. 2 is a schematic view of the pipe of the present invention, and a schematic view of the connecting groove and the sealing groove formed at both ends.

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-processing a grooved seamless tube at the head; 2-pipe sleeve; 3-butt joint clamping key; 4-a backing tape; 5-pressure responsive sealing; 6-a guide bush; 7-a card key; 8-cutting the ferrule; 9-cutting ferrule stop device

Detailed Description

The invention will now be described more fully hereinafter with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and that other embodiments may be devised by those skilled in the art without the use of the inventive faculty, and the scope of the invention is accordingly to be determined by the claims that follow.

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 those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element 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 the terms "mounted", "connected", and "restrained" are to be construed broadly unless otherwise expressly specified or limited. For example, the connection may be fixed, detachable, or other connections of the same body; 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, a set screw and a spring clamp key. The clamping key can be limited by using a clamping sleeve or a throat hoop strapping tape and other limiting modes. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The invention provides a fluid pipeline connection mode, and referring to fig. 1, the embodiment adopts a butt joint clamping key (3) to connect two pieces of seamless pipes (1) with grooves on the head parts to limit the movement of the two pipes in the left and right directions. The movement of the front, back, up and down positions of the two seamless pipes (1) with grooves on the head and the butt joint clamping key (3) is limited by the pipe sleeve (2). The seamless pipe (1) with the groove processed at the head part is provided with a pressure response type seal (5) which is used together with the pipe sleeve (2) to ensure that the fluid in the sealed pipeline does not leak; the guide bush (6) is arranged on the seamless pipe (1) with the groove machined at the head part and used for limiting the gap between the pipe sleeve (2) and the seamless pipe (1) with the groove machined at the head part, reducing the phenomenon of responsive sealing (5) of bending moment or bias pressure generated by overlarge gap at the connecting position, and simultaneously playing a role of guiding and reducing the gap between the pipe sleeve (2) and the seamless pipe (1) with the groove machined at the head part during installation. The left and right limiting of the pipe sleeve is realized by a clamping key (7), and the limiting can be realized by other methods such as a set screw and the like. The limiting of the clamping key (7) is realized by the clamping sleeve (8) so as to ensure that the clamping key (7) cannot fall off from the key groove of the seamless tube (1), one part of the clamping key is clamped in the key groove of the seamless tube (1), and the other part of the clamping key is limited by the clamping sleeve (8) and cannot fall off. The outer side of the cutting sleeve (8) is limited by the cutting sleeve fixing device (9).

Claims (7)

1. A fluid carrying pressure line connection and sealing apparatus comprising:

the head part is provided with grooved seamless tubes (1), a tube sleeve (2), a butt joint clamping key (3), a pressure response type seal (5), a guide lining (6), a clamping key (7), a clamping sleeve (8), a clamping sleeve limiting device (9) and other parts.

2. Connecting the two butted pipelines in a radial direction, and simultaneously sealing the pipelines to prevent the 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 not easy to damage, is convenient to produce and process, does not damage the pressure resistance strength of the pipelines when machining connecting grooves, and does not reduce the inner drift diameter of the pipelines.

3. The grooved seamless tube (1) with a head according to claim is characterized in that:

both ends of the seamless tube are provided with grooves for installing butt clamping keys (3), grooves for installing pressure response type seals (5), grooves for installing guide linings (6), grooves with spring clamping keys for installing clamping keys (7) and installing limiting clamping keys (7) and the like.

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

the pipe sleeve is used for being matched with a seamless pipe (1) with a groove processed at the head, a butt joint clamping key (3), a pressure response type seal (5) and a guide lining (6) for use and is used for sealing high-pressure liquid inside a pipeline.

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

the semi-ring structure is internally provided with clamping grooves which can be used for clamping head grooves of the seamless pipe (1) with grooves processed at the head part respectively, and each set of butt joint clamping key (3) adopts two seamless pipes (1) with grooves processed at the head part.

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

the response type seal (5) adopts a pressure response type, the larger the pressure of the internal closed fluid is, the tighter the pressure between the seamless pipe (1) with the groove processed at the head part and the pipe sleeve (2) is, and the better the sealing effect is.

7. The present connecting structure according to claim, characterized in that:

the seamless pipe (1) with the groove processed at the head part is connected by a butt joint clamping key (3) to realize axial limiting, the pipe sleeve (2) and the sealing on the pipe are used for jointly realizing the sealing effect on the liquid in the pipe, and the axial limiting of the pipe sleeve (2) can be limited by adopting various modes such as a set screw, a clamping key and a clamping sleeve without influencing the claim of the patent.

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