CN211716005U

CN211716005U - Special L-shaped bent pipe for changing coal into gas

Info

Publication number: CN211716005U
Application number: CN201922376306.8U
Authority: CN
Inventors: 刘金禄; 刘勇
Original assignee: Tianjin Renhe Gas Equipment Co ltd
Current assignee: Tianjin Renhe Gas Equipment Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-20
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a special L shape return bend of coal gas, including coupling nut and connecting pipe, coupling nut installs the port department in connecting pipe one end, the crooked 90 degrees of connecting pipe, both ends mutually perpendicular after the connecting pipe is crooked, and the shape of intermediate junction section is the circular arc. The beneficial effects of the utility model are that, the effectual gas leak source that has reduced has improved the security performance that the gas return bend is connected, has reduced the potential safety hazard.

Description

Special L-shaped bent pipe for changing coal into gas

Technical Field

The utility model relates to a coal changes gas engineering with return bend structure's technical field, especially a special L shape return bend of coal changes gas.

Background

In coal-to-gas engineering, an elbow for connecting a gas meter is an indispensable part, particularly an L-shaped elbow, which is formed by connecting straight pipes through elbows, as shown in fig. 2, at least one elbow is adopted to connect two straight pipes according to the shape requirement of the elbow, which means that two connection points exist in the elbow structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a special L-shaped bent pipe for changing coal into gas is designed.

Realize above-mentioned purpose the technical scheme of the utility model be, a special L shape return bend of coal-to-gas, including coupling nut and connecting pipe, coupling nut installs the port department in connecting pipe one end, the crooked 90 degrees of connecting pipe, both ends mutually perpendicular after the connecting pipe is crooked, the shape of intermediate junction section is the circular arc.

The connecting pipe is a galvanized steel pipe.

And the other end of the connecting pipe is provided with a connecting thread.

And the connecting nut is used for connecting the gas inlet or the gas outlet of the gas meter.

Advantageous effects

Utilize the technical scheme of the utility model the special L shape return bend of coal gas change of preparation only has a tie point, and the centre does not adopt the elbow to connect, and the effectual tie point of avoiding elbow and straight tube to be connected has then reduced two leak sources of gas return bend, has reduced the risk that the gas leaked, has improved the security that the coal changed the gas construction and equipment use in the future.

Drawings

FIG. 1 is a schematic structural view of an L-shaped elbow pipe dedicated for reforming coal into gas;

fig. 2 is a schematic structural view of the original L-shaped elbow pipe of the present invention;

in the figure, 1, a nut is connected; 2. a connecting pipe; 3. a connecting section; 4. a straight pipe; 5. and (4) bending the pipe.

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.

Referring to fig. 1-2, the invention of the present application is characterized in that the connecting tube is bent by 90 degrees, the two bent ends of the connecting tube are perpendicular to each other, and the middle connecting section 3 is in the shape of a circular arc.

In the prior art, the gas elbow is formed by connecting two straight pipes 4 and an elbow 5 as shown in fig. 2, which leads to two connection points in the whole elbow, and the two connection points are the positions where the straight pipes are connected with the elbow respectively, so that when the existing gas elbow is connected with a gas meter, two possible leakage points exist, which can greatly increase the gas leakage probability and leave great potential safety hazards for people.

Compared with the prior art, the gas leakage protection device has the advantages that only one connecting point of the connecting nut exists, the whole connecting pipe does not have any redundant connecting point, the possible gas leakage point exists only in the bent pipe structure, the gas leakage probability is effectively reduced, and the potential safety hazard is further reduced.

As a preferable scheme, further, the connecting pipe is a galvanized steel pipe, the original bent pipe is made of a cast iron material, and an anti-corrosion coating is coated on the surface of the original bent pipe, and the original cast iron pipe cannot achieve the bending effect required in the application, so that the technical scheme of the application cannot be achieved.

Preferably, the other end of the connecting pipe is provided with a connecting thread for connecting a gas delivery pipe.

As a preferred scheme, furthermore, the connecting nut is used for connecting an air inlet or an air outlet of the gas meter.

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. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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. The utility model provides a special L shape return bend of coal gas, includes coupling nut (1) and connecting pipe (2), coupling nut installs the port department at connecting pipe one end, its characterized in that, the connecting pipe is crooked 90 degrees, both ends mutually perpendicular after the connecting pipe is crooked, the shape of intermediate junction section (3) is the circular arc.

2. The L-shaped elbow special for coal-to-gas conversion according to claim 1, wherein the connecting pipe is a galvanized steel pipe.

3. The L-shaped bent pipe special for coal-to-gas conversion according to claim 1, wherein the other end of the connecting pipe is provided with a connecting thread.

4. The L-shaped bent pipe special for changing coal into gas according to claim 1, wherein the connecting nut is used for connecting a gas inlet or a gas outlet of a gas meter.