CN215215280U

CN215215280U - Simple overpressure prevention device for liquid conveying pipeline

Info

Publication number: CN215215280U
Application number: CN202121033974.1U
Authority: CN
Inventors: 王金刚; 楚荣强; 孙延安
Original assignee: Shandong Boyuan Pharmaceutical Chemical Co Ltd
Current assignee: Shandong Boyuan Pharmaceutical Chemical Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-12-17
Anticipated expiration: 2031-05-14

Abstract

The utility model relates to the technical field of liquid conveying pipeline devices, in particular to a simple overpressure prevention device for a liquid conveying pipeline, which comprises a short pipe body and an air storage cylinder body, wherein flange plates are arranged at two ends of the short pipe body, a cuboid groove is fixedly connected at the top end of the middle part of the short pipe body, the inner cavity of the cuboid groove is communicated with the top end of the middle part of the inner cavity of the short pipe body, the bottom end of the air storage cylinder body is fixedly connected on the top surface of the cuboid groove, the bottom end of the inner cavity of the air storage cylinder body is communicated with the inner cavity of the cuboid groove, and an inflation valve is arranged on the side wall of the air storage cylinder body; the problem of liquid conveying pipeline be difficult to automatic step-down among the prior art is solved.

Description

Simple overpressure prevention device for liquid conveying pipeline

Technical Field

The utility model relates to a liquid conveying pipeline technical field specifically is a simply prevent superpressure device for liquid conveying pipeline.

Background

Pipeline transportation engineering is widely applied to the field of liquid transportation. In actual operation, the liquid in the pipeline increases in pressure with the increase of temperature in the flowing process due to the expansion of the liquid volume or the release of dissolved gas. In order to protect the pipeline, a safety valve is often installed on the pipeline, and when the pressure of liquid in the pipeline reaches the opening pressure of the safety valve, the safety valve can automatically release the pressure, so that the safety of the pipeline is ensured.

However, it is difficult to determine the opening pressure value of the safety valve in practice, and if the opening pressure value of the safety valve is set to be low, frequent actions of the safety valve are caused, so that the service life of the safety valve is reduced; if the opening pressure value of the safety valve is set to be higher, the liquid pressure can be maintained at a higher value for a long time, so that the sealing gasket at the joint of the flange plate is damaged, and the leakage problem occurs.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that solves among the prior art that liquid conveying line is difficult to automatic step-down, designed a simply prevent superpressure device for liquid conveying line.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a simple and easy superpressure prevention device for liquid conveying pipeline, includes short body and gas receiver, the both ends of short body are provided with the ring flange, the top fixedly connected with cuboid groove at short body middle part, the inner chamber in cuboid groove with the top intercommunication at short body inner chamber middle part, the bottom fixed connection of gas receiver is in on the top surface in cuboid groove, the bottom of gas receiver inner chamber with the inner chamber intercommunication in cuboid groove, the inflation valve is installed to the lateral wall of gas receiver.

Preferably, a connecting through hole is formed in the middle of the cuboid groove top face, the cuboid groove top face is located a plurality of connecting screw rods which are fixedly connected with the periphery of the connecting through hole in an even and vertical mode, the bottom end of the gas storage barrel is provided with a vertical pipe body, an annular connecting disc is fixedly connected with the bottom end of the vertical pipe body, the annular connecting disc corresponds to the positions of the connecting screw rods are respectively provided with a through hole, and nuts are respectively sleeved with the top ends of the connecting screw rods in a threaded mode after the through holes are penetrated through.

Preferably, the inflation valve is fixedly installed at the middle position of the side wall of the air cylinder body.

Preferably, the outer end of the inflation valve is sleeved with a sealing cover in a threaded manner.

Preferably, an air sealing structure is arranged between the bottom surface of the annular connecting disc and the top surface of the cuboid groove.

Compared with the prior art, the beneficial effects of the utility model are that:

the simple overpressure prevention device of the utility model takes the difference of the compression ratio of gas and liquid as the design principle, and has simple structure; can be convenient for connect the device between liquid conveying line through the ring flange, be filled with gas in the gas receiver, when liquid temperature risees gasification phenomenon appears, pressure in the pipeline can compress the gas in the gas receiver to reduce whole conveying line's pressure.

Drawings

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

FIG. 2 is a schematic perspective view of the short tube body of the present invention;

fig. 3 is the schematic view of the cross-sectional structure of the short pipe body of the present invention.

In the figure: 1-short tube body; 11-a flange plate; 12-a cuboid groove; 13-connecting vias; 2-a gas storage cylinder; 21-a vertical pipe body; 22-ring-shaped connecting disc; 3-connecting a screw rod; 4-an inflation valve; 41-sealing cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, the utility model provides a technical scheme, a simple and easy overpressure prevention device for liquid conveying pipeline, including short body 1 and gas receiver body 2, the both ends of short body 1 are provided with ring flange 11, the top fixedly connected with cuboid groove 12 at short body 1 middle part, the inner chamber of cuboid groove 12 and the top intercommunication at short body 1 inner chamber middle part, the bottom fixed connection of gas receiver body 2 is on the top surface of cuboid groove 12, the bottom of gas receiver body 2 inner chamber and the inner chamber intercommunication of cuboid groove 12, inflation valve 4 is installed to the lateral wall of gas receiver body 2.

In this embodiment, connecting hole 13 has been seted up at the middle part of cuboid groove 12 top surface, and cuboid groove 12 top surface is located a plurality of connecting screw rods 3 of the even perpendicular fixedly connected with in connecting hole 13 outlying position, and the bottom of gas storage barrel 2 is provided with perpendicular body 21, and the bottom fixedly connected with ring connection pad 22 of perpendicular body 21, the position that ring connection pad 22 corresponds connecting screw rod 3 is provided with the through-hole respectively, and has threaded sleeve connected the nut respectively behind the through-hole is run through on connecting screw rod 3's top.

In this embodiment, the inflation valve 4 is fixedly installed at the middle position of the side wall of the air storage cylinder 2.

In this embodiment, the outer end of the inflation valve 4 is screwed with the sealing cover 41.

In this embodiment, a hermetic sealing structure is provided between the bottom surface of the annular land 22 and the top surface of the rectangular parallelepiped groove 12.

The working principle is as follows: the short pipe body 1 is connected between the joints at the highest positions of the liquid conveying pipelines through the flange plate 11, liquid is difficult to enter the gas storage cylinder body 2, so that a section of gas in the gas storage cylinder body 2 is always sealed and stored, and nitrogen (generally nitrogen or other inert gases) can be filled into the inner cavity of the gas storage cylinder body 2 through the charging valve 4; in the process that liquid flows in the conveying pipeline, when volume expansion or gasification phenomenon appears because the liquid temperature risees, the pressure in the pipeline can compress the gas in the gas receiver body 2 to ensure that the pressure of whole airtight conveying pipeline can not acutely rise, thereby guarantee that the pipeline wholly can not receive the pressurized fracture.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A simple overpressure prevention device for a liquid conveying pipeline is characterized in that: including short body (1) and gas receiver body (2), the both ends of short body (1) are provided with ring flange (11), the top fixedly connected with cuboid groove (12) at short body (1) middle part, the inner chamber of cuboid groove (12) with the top intercommunication at short body (1) inner chamber middle part, the bottom fixed connection of gas receiver body (2) is in on the top surface of cuboid groove (12), the bottom of gas receiver body (2) inner chamber with the inner chamber intercommunication of cuboid groove (12), inflation valve (4) are installed to the lateral wall of gas receiver body (2).

2. A simple overpressure protection device for liquid conveying lines as claimed in claim 1, characterised in that: connecting hole (13) have been seted up at the middle part of cuboid groove (12) top surface, cuboid groove (12) top surface is located a plurality of connecting screw (3) of the even perpendicular fixedly connected with in connecting hole (13) outlying position, the bottom of gas storage barrel (2) is provided with perpendicular body (21), erect the bottom fixedly connected with ring connection pad (22) of body (21), ring connection pad (22) correspond the position of connecting screw (3) is provided with the through-hole respectively, and has cup jointed the nut after the top of connecting screw (3) runs through the through-hole respectively the screw thread.

3. A simple overpressure protection device for liquid conveying lines as claimed in claim 2, characterized in that: the inflation valve (4) is fixedly arranged in the middle of the side wall of the air storage cylinder body (2).

4. A simple overpressure protection device for liquid transfer lines as claimed in any one of claims 1 to 3, characterised by: the outer end of the inflation valve (4) is sleeved with a sealing cover (41) in a threaded manner.

5. A simple overpressure protection device for liquid conveying lines as claimed in claim 2, characterized in that: and an air-tight sealing structure is arranged between the bottom surface of the annular connecting disc (22) and the top surface of the cuboid groove (12).