CN218544001U

CN218544001U - Stainless steel double-row ball rotary joint LNG liquid feeding arm

Info

Publication number: CN218544001U
Application number: CN202223166257.3U
Authority: CN
Inventors: 田超; 杨辰; 吴雪璞
Original assignee: Siruixin Tianjin Energy Technology Co ltd
Current assignee: Siruixin Tianjin Energy Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-02-28
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to a stainless steel biserial ball rotary joint LNG liquid feeding arm, including the main part, still include the liquid feeding pipe, return liquid pipe and jar body, main part and liquid feeding pipe, return liquid pipe integrated into one piece, the main part can be dismantled with the jar body and be connected, and the liquid feeding pipe is used for to jar internal filling liquefied natural gas, and return liquid pipe is used for establishing backflow pipeline in liquefied natural gas input and jar internal. The utility model discloses liquid feeding pipe and biserial ball rotary joint based on suit formula setting realize the liquid feeding to the LNG jar body, the liquid feeding in-process, liquid feeding arm displacement degree of freedom is great, can rotate, avoids because the pipeline that the long term of liquid feeding arm, connecting pipe is buckled many times and is leaded to is ageing to promote into the production cost and promote the fault rate, and be provided with the liquid return chamber, promptly, the internal liquefied natural gas capacity of automatic monitoring jar reduces staff's work load, reduces the human cost.

Description

Stainless steel double-row ball rotary joint LNG liquid feeding arm

Technical Field

The utility model belongs to the technical field of the LNG liquid feeding technique and specifically relates to a stainless steel biserial ball rotary joint LNG liquid feeding arm.

Background

LNG is an abbreviation for i.e. liquefied natural gas. The major component is methane. The LNG is colorless, odorless, nontoxic and noncorrosive, has a volume of about 1/625 of the volume of the same amount of gaseous natural gas, has a weight of about 45% of the same volume of water, and has a calorific value of 52MMBtu/t.

LNG need carry out the filling liquid feeding in transportation, and present liquid feeding portion generally adopts the hose connection, under long-time use state, causes the pipeline ageing easily to influence the security and promote and maintain use cost, and present filling volume generally adopts the mode of weighing to obtain, and it is comparatively inconvenient to use, consequently, needs an LNG liquid feeding arm of rotatable joint who uses double-row ball.

Disclosure of Invention

Technical problem to be solved by the utility model

The existing hose connecting pipeline is aged, high in maintenance cost and inconvenient to use.

Technical solution for solving technical problem

Further advantageous embodiments and further developments of the invention which are inventive in part per se are set forth in the description below.

The utility model provides a stainless steel biserial ball rotary joint LNG liquid feeding arm, includes the main part, still includes the liquid feeding pipe, returns liquid pipe and a jar body, the main part with the liquid feeding pipe return liquid pipe integrated into one piece, the main part with the connection can be dismantled to the jar body, the liquid feeding pipe be used for to the internal liquefied natural gas that fills of jar, return the liquid pipe be used for at the liquefied natural gas input with the internal backflow pipeline that sets up of jar.

Preferably, the main body is provided in a tubular shape with one end closed, and the filling pipe penetrates through the closed end of the main body.

Preferably, the inner wall of the main body and the outer wall of the liquid feeding pipe form a liquid return cavity, and a liquid return port is arranged through the outer wall of the main body and communicated with the liquid return cavity;

the liquid adding pipe is communicated with the liquid return cavity through the liquid return port.

Preferably, a ball bearing is arranged on the inner wall of the main body, which is positioned in the liquid return cavity and far away from the liquid return port;

and a ball bearing is arranged on the outer wall of the liquid adding pipe, which is positioned in the liquid return cavity and close to the liquid return port.

Preferably, an integrally formed interface is arranged at one end of the tank body.

Preferably, the ball bearing mounted on the inner wall of the main body is provided with a rotary seal assembly.

Preferably, the free end of the filling pipe extends to the bottom of the vertical direction inside the tank body.

Preferably, the liquid feeding pipe and the liquid return pipe are provided with threaded joints at the ends far away from the main body.

Effect of the utility model

According to the utility model discloses, through the liquid feeding pipe and the biserial ball rotary joint that the suit formula set up, realize the liquid feeding to the LNG jar body, the liquid feeding in-process, liquid feeding arm displacement degree of freedom is great, can rotate, avoids because the pipeline that the long term of liquid feeding arm, connecting pipe is buckled and is leaded to is ageing many times to promote into production cost and promote the fault rate, and be provided with back the liquid chamber, promptly, the internal liquefied natural gas capacity of automatic monitoring jar reduces staff's work load, reduces the human cost.

Drawings

Embodiments of the present invention are explained in detail below with reference to the drawings. In the drawings:

FIG. 1 is a view of the structure of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a view of the structure of the hidden tank body of the present invention.

Description of the reference numerals

1. A threaded joint; 101. a liquid feeding pipe; 102. a liquid return pipe; 2. a main body; 201. a liquid return cavity; 201-1, a liquid return port; 202. a ball bearing; 3. a tank body; 301. and (4) an interface.

Detailed Description

Hereinafter, an LNG refueling arm of a stainless steel double row ball swivel according to an embodiment of the present invention will be described with reference to the drawings.

Referring to fig. 1-3, an LNG liquid feeding arm with a stainless steel double-row ball swivel joint includes a main body 2, a liquid feeding pipe 101, a liquid returning pipe 102 and a tank 3, wherein the main body 2 is fixedly connected with the liquid feeding pipe 101 and the liquid returning pipe 102, and the main body 2 is detachably connected with the tank 3;

the outer walls of the liquid feeding pipe 101 and the liquid return pipe 102 far away from the main body 2 are provided with threaded joints 1;

with respect to the main body 2, the main body 2 is provided in a tubular shape and one end thereof is closed, and the output end of the filler pipe 101 passes through the closed end of the main body 2;

the inner wall of the main body 2 and the outer wall of the liquid feeding pipe 101 form a liquid returning cavity 201;

a liquid return port 201-1 is formed through the outer wall of the main body 2, and the liquid return pipe 102 is connected to the liquid return port 201-1;

a ball bearing 202 is arranged on the inner wall of the main body 2 which is positioned in the liquid return cavity 201 and is far away from the liquid return port 201-1;

a ball bearing 202 is arranged on the outer wall of the liquid feeding pipe 101 which is positioned in the liquid return cavity 201 and close to the liquid return port 201-1;

the inlet and outlet ports of the tank body 3 are arranged as a connector 301, and the connector 301 and the tank body 3 are integrally formed;

specifically, the ball bearing 202 mounted on the inner wall of the main body 2 is provided with a seal assembly, and the ball bearing 202 mounted on the filler pipe 101 is a conventional bearing;

more specifically, the inner wall of the main body 2 is in sealed rotary connection with the outer wall of the interface 301 through a ball bearing 202 with a sealing assembly, and the outer wall of the filler pipe 101 is in rotary connection with the inner wall of the interface 301 through a conventional ball bearing 202;

the free end of the filling tube 101 extends to the bottom of the tank 3 in the vertical direction.

Normal use state

When the main body 2 and the tank 3 are installed, liquefied natural gas is input into the tank 3 through the liquid feeding pipe 101, and when the liquefied natural gas in the tank 3 vertically exceeds the height of the interface 301, the liquefied natural gas enters the liquid returning cavity 201 through a gap between the interface 301 and the liquid feeding pipe 101, and then enters the liquid returning pipe 102 through the liquid returning port 201-1 formed in the outer wall of the liquid returning cavity 201, so that filling is completed.

Compared with the prior art, this application is through liquid feeding pipe 101 and the biserial ball rotary joint that the suit formula set up, realize the liquid feeding to the LNG jar body 3, the liquid feeding in-process, liquid feeding arm displacement degree of freedom is great, can rotate, avoid because the liquid feeding arm, the pipeline that the long term of connecting pipe is buckled many times and is leaded to is ageing, thereby promote the cost of production and promote the fault rate, and be provided with liquid return chamber 201, namely, the liquefied natural gas capacity in the automatic monitoring jar body 3, reduce staff's work load, reduce the human cost.

The present invention is not limited to the embodiments, and various modifications can be made without departing from the spirit thereof.

Claims

1. The utility model provides a stainless steel biserial ball rotary joint LNG liquid feeding arm, includes main part (2), its characterized in that: still include liquid feeding pipe (101), return liquid pipe (102) and jar body (3), main part (2) with liquid feeding pipe (101) return liquid pipe (102) integrated into one piece, main part (2) with can dismantle the connection of jar body (3), liquid feeding pipe (101) be used for to annotate liquefied natural gas in jar body (3), return liquid pipe (102) be used for at liquefied natural gas input with set up backflow pipeline in jar body (3).

2. The LNG filling arm with the stainless steel double-row ball rotary joint as claimed in claim 1, wherein the LNG filling arm with the stainless steel double-row ball rotary joint comprises: the main body (2) is tubular with one closed end, and the liquid feeding pipe (101) penetrates through the closed end of the main body (2).

3. The LNG liquid feeding arm of the stainless steel double-row ball rotary joint of claim 2, wherein: the inner wall of the main body (2) and the outer wall of the liquid feeding pipe (101) form a liquid return cavity (201), and a liquid return opening (201-1) penetrates through the outer wall of the main body (2) and is communicated with the liquid return cavity (201);

the liquid feeding pipe (101) is communicated with the liquid returning cavity (201) through the liquid returning port (201-1).

4. The LNG liquid feeding arm of the stainless steel double-row ball rotary joint of the claim 3, characterized in that: a ball bearing (202) is arranged on the inner wall of the main body (2) which is positioned in the liquid return cavity (201) and far away from the liquid return port (201-1);

and a ball bearing (202) is arranged on the outer wall of the liquid feeding pipe (101) which is positioned in the liquid returning cavity (201) and close to the liquid returning port (201-1).

5. The LNG liquid feeding arm of the stainless steel double-row ball rotary joint of the claim 1, characterized in that: an integrally formed interface (301) is arranged at one end of the tank body (3).

6. The LNG filling arm with the stainless steel double-row ball rotary joint as claimed in claim 4, wherein the LNG filling arm with the stainless steel double-row ball rotary joint comprises: the ball bearing (202) mounted on the inner wall of the main body (2) is provided with a rotary seal assembly.

7. The LNG liquid feeding arm of the stainless steel double-row ball rotary joint of the claim 1, characterized in that: the free end of the liquid feeding pipe (101) extends to the bottom of the vertical direction in the tank body (3).

8. The LNG liquid feeding arm of the stainless steel double-row ball rotary joint of the claim 1, characterized in that: and threaded joints (1) are arranged at one ends of the liquid adding pipe (101) and the liquid return pipe (102) far away from the main body (2).