CN210424068U

CN210424068U - Main steam drain pipe connecting structure

Info

Publication number: CN210424068U
Application number: CN201921484002.7U
Authority: CN
Inventors: 于丰云
Original assignee: Weifang Special Steel Group Co ltd
Current assignee: Weifang Special Steel Group Co ltd
Priority date: 2019-09-08
Filing date: 2019-09-08
Publication date: 2020-04-28
Anticipated expiration: 2029-09-08

Abstract

The utility model discloses a main steam drain pipe connection structure, including main steam drain pipe and outdoor drain pipe, demountable installation has U type pipe between main steam drain pipe and the outdoor drain pipe, the one end that U type pipe is close to main steam drain pipe and outdoor drain pipe all is equipped with connecting device, the inboard of U type pipe middle-end is equipped with anti-return device. The utility model discloses in can dismantle between main steam drain pipe and outdoor drain pipe and be connected with U type pipe, avoid directly welding main steam drain pipe on outdoor drain pipe to can prevent that main steam drain pipe and outdoor drain pipe connection weld joint from breaking, not only improve the security of unit production, can also prevent steam scald operation workman, reasonable in design.

Description

Main steam drain pipe connecting structure

Technical Field

The utility model relates to a sintering fan workshop technical field especially relates to a main steam drain pipe connection structure.

Background

Among the prior art, the steam turbine in sintering fan workshop main steam pipeline before the electronic main steam valve drain pipe is mostly direct welding to outdoor drainage pipe, and main steam pipeline is in long-time work, and the pipeline can receive cold and hot inflation and vibrations and thermal stress's change, easily causes main steam drain pipe and outdoor drainage pipe to be connected the weld joint and breaks, not only influences unit safety in production, probably leads to steam scald operation workman in addition, consequently needs make the improvement to this.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the unreasonable problem of main steam drain pipe connection in the prior art and providing a main steam drain pipe connection structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a main steam drain pipe connection structure, includes main steam drain pipe and outdoor drain pipe, demountable installation has U type pipe between main steam drain pipe and the outdoor drain pipe, the one end that U type pipe is close to main steam drain pipe and outdoor drain pipe all is equipped with connecting device, the inboard of U type pipe middle-end is equipped with anti-return device.

Preferably, the connecting device comprises an annular connecting plate fixedly installed on the outer side wall of the main steam drain pipe, a plurality of fastening bolts are uniformly inserted on the outer side wall of one side of the annular connecting plate, and the fastening bolts penetrate through the annular connecting plate and are in threaded connection with the main steam drain pipe or the outdoor drain pipe.

Preferably, two equal fixed mounting has the annular connecting block on the lateral wall of the opposite one side of annular connecting plate, and the annular connecting block keeps away from the one end of annular connecting plate and inserts respectively and establish on main steam drain pipe or outdoor drain pipe, all set up the annular spread groove of mutually supporting with the annular connecting block on the lateral wall of main steam drain pipe and outdoor drain pipe, two equal fixed mounting has seal ring on the inside wall of annular spread groove, and seal ring all contacts with annular connecting block each other.

Preferably, the backflow prevention device comprises flow grooves which are respectively formed in two ends of the U-shaped pipe, a communication groove is formed between the two flow grooves, the two flow grooves are communicated with the communication groove, a large inner diameter end and a small inner diameter end are respectively formed in two ends of the communication groove, a sealing ball body is arranged in the communication groove, the diameter of the sealing ball body is larger than the inner diameter of the small inner diameter end, and the diameter of the sealing ball body is smaller than the inner diameter of the large inner diameter end.

Preferably, the inner side wall of the large inner diameter end is fixedly provided with a limiting rod matched with the sealing ball body.

Preferably, the sealing ball is made of high-temperature-resistant stainless steel materials.

Compared with the prior art, the utility model discloses there is following beneficial effect:

1. the U-shaped pipe is detachably connected between the main steam drain pipeline and the outdoor drain pipe, so that the main steam drain pipe is prevented from being directly welded on the outdoor drain pipe, the connection welded junction of the main steam drain pipe and the outdoor drain pipe can be prevented from being broken, the production safety of a unit is improved, operating workers can be prevented from being scalded by steam, and the design is reasonable;

2. simple structure is equipped with anti-return device in U type intraductal, can prevent liquid or gaseous refluence in U type pipe to can avoid cold and hot liquid or gaseous incessantly collide the life that leads to U type pipe at U type pipe and shorten, practical function is good.

Drawings

Fig. 1 is a schematic front structural view of a main steam drain pipe connection structure provided by the present invention;

FIG. 2 is an enlarged view of the structure of part A of a main steam trap connection structure according to the present invention;

fig. 3 is an enlarged view of a portion B of the main steam trap connecting structure according to the present invention.

In the figure: the device comprises a main steam drain pipe 1, an outdoor drain pipe 2, a U-shaped pipe 3, an annular connecting plate 4, a fastening bolt 5, an annular connecting block 6, an annular connecting groove 7, a sealing gasket 8, a flow groove 9, a communicating groove 10, a large inner diameter end 11, a small inner diameter end 12, a sealing ball 13 and a limiting rod 14.

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.

Referring to fig. 1-3, a main steam drain pipe connection structure, including main steam drain pipe 1 and outdoor drain pipe 2, demountable installation has U type pipe 3 between main steam drain pipe 1 and the outdoor drain pipe 2, avoids directly welding main steam drain pipe 1 on outdoor drain pipe 2 to can prevent that main steam drain pipe 1 and outdoor drain pipe 2 from being connected the weld joint and breaking, not only improve the security of unit production, can also prevent that steam from scalding the operation workman, reasonable in design.

One end that U type pipe 3 is close to main steam drain pipe 1 and outdoor drain pipe 2 all is equipped with connecting device, connecting device includes annular connecting plate 4 of fixed mounting on main steam drain pipe 1 lateral wall, evenly insert on the lateral wall of annular connecting plate 4 one side and be equipped with a plurality of fastening bolt 5, and fastening bolt 5 all runs through annular connecting plate 4 and threaded connection on main steam drain pipe 1 or outdoor drain pipe 2, can be convenient install the dismantlement to U type pipe 3, thereby can be convenient overhaul or change U type pipe 3.

Equal fixed mounting has annular connecting block 6 on the lateral wall of two opposite sides of annular connecting plate 4, and annular connecting block 6 keeps away from the one end of annular connecting plate 4 and inserts respectively and establish on main steam drain pipe 1 or outdoor drain pipe 2, all set up the annular spread groove 7 of mutually supporting with annular connecting block 6 on main steam drain pipe 1 and outdoor drain pipe 2's the lateral wall, equal fixed mounting has seal ring 8 on two annular spread groove 7's the inside wall, and seal ring 8 all contacts each other with annular connecting block 6, can promote the leakproofness that U type pipe 3 and main steam drain pipe 1 and outdoor drain pipe 2 are connected.

The inner side of the middle end of the U-shaped pipe 3 is provided with a backflow prevention device, the backflow prevention device comprises flow grooves 9 respectively arranged at two ends of the U-shaped pipe 3, a communication groove 10 is arranged between the two flow grooves 9, the two flow grooves 9 are communicated with the communication groove 10, two ends of the communication groove 10 are respectively provided with a large inner diameter end 11 and a small inner diameter end 12, a sealing ball 13 is arranged in the communication groove 10, the diameter of the sealing ball 13 is larger than the inner diameter of the small inner diameter end 12, the diameter of the sealing ball 13 is smaller than the inner diameter of the large inner diameter end 11, liquid or gas can only flow from the small inner diameter end 12 to the large inner diameter end 11 of the U-shaped pipe 3, the sealing ball 13 can be driven to seal the small inner diameter end 12 and the U-shaped pipe 3 when the liquid or gas can only flow from the large inner diameter end 11 to the small inner diameter end 12 of the U-shaped pipe 3, the liquid or gas can be prevented from flowing back in the U-shaped pipe 3, and the service life, the practical effect is good, and sealed spheroid 13 adopts high temperature resistant stainless steel material to make, long service life.

The limiting rod 14 matched with the sealing ball 13 is fixedly arranged on the inner side wall of the large inner diameter end 11, and the sealing ball 13 can be prevented from falling off from the communicating groove 10.

The utility model discloses in, insert main steam drain pipe 1 and outdoor drain pipe 2 respectively with U type pipe 3's both ends in and make two annular connecting plates 4 respectively with main steam drain pipe 1 and outdoor drain pipe 2 each other in close contact with, then run through annular connecting plate 4 and threaded connection respectively on main steam drain pipe 1 or outdoor drain pipe 2 with fastening bolt 5, just can be with U type pipe 3 fixed seal connection between main steam drain pipe 1 and outdoor drain pipe 2.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a main steam drain pipe connection structure, includes main steam drain pipe (1) and outdoor drain pipe (2), its characterized in that: u type pipe (3) of demountable installation between main steam drain pipe (1) and outdoor drain pipe (2), the one end that U type pipe (3) are close to main steam drain pipe (1) and outdoor drain pipe (2) all is equipped with connecting device, the inboard of U type pipe (3) middle-end is equipped with anti-reflux device.

2. A main steam trap connecting structure according to claim 1, wherein: the connecting device comprises an annular connecting plate (4) fixedly installed on the outer side wall of the main steam drain pipe (1), a plurality of fastening bolts (5) are evenly inserted into the outer side wall of one side of the annular connecting plate (4), and the fastening bolts (5) penetrate through the annular connecting plate (4) and are connected to the main steam drain pipe (1) or the outdoor drain pipe (2) in a threaded mode.

3. A main steam trap connecting structure according to claim 2, wherein: two equal fixed mounting has annular connecting block (6) on the lateral wall of the opposite one side of annular connecting plate (4), and annular connecting block (6) keep away from the one end of annular connecting plate (4) and insert respectively and establish on main steam drain pipe (1) or outdoor drain pipe (2), all offer annular spread groove (7) of mutually supporting with annular connecting block (6) on the lateral wall of main steam drain pipe (1) and outdoor drain pipe (2), two equal fixed mounting has seal ring (8) on the inside wall of annular spread groove (7), and seal ring (8) all with annular connecting block (6) mutual contact.

4. A main steam trap connecting structure according to claim 1, wherein: the backflow prevention device comprises flow grooves (9) which are respectively formed in two ends of a U-shaped pipe (3), a communication groove (10) is formed between the flow grooves (9), the two flow grooves (9) are communicated with the communication groove (10), a large inner diameter end (11) and a small inner diameter end (12) are respectively arranged at two ends of the communication groove (10), a sealing ball body (13) is arranged in the communication groove (10), the diameter of the sealing ball body (13) is larger than the inner diameter of the small inner diameter end (12), and the diameter of the sealing ball body (13) is smaller than the inner diameter of the large inner diameter end (11).

5. A main steam trap connecting structure according to claim 4, wherein: and a limiting rod (14) matched with the sealing ball body (13) is fixedly arranged on the inner side wall of the large inner diameter end (11).

6. A main steam trap connecting structure according to claim 4, wherein: the sealing ball body (13) is made of high-temperature-resistant stainless steel materials.