CN219582092U

CN219582092U - Heat supply pipeline exhaust structure

Info

Publication number: CN219582092U
Application number: CN202321181314.7U
Authority: CN
Inventors: 李剑飞; 冯阳; 郝玉军; 郭爱茹; 白刚; 李龙; 张泽良; 柔伟强; 包其格其
Original assignee: Ordos Dongsheng District Huihe Heating Co ltd
Current assignee: Ordos Dongsheng District Huihe Heating Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-08-25
Anticipated expiration: 2033-05-17

Abstract

The utility model relates to a heat supply pipeline exhaust structure, which comprises a heat supply main pipe and an exhaust pipe; the pipe wall of the heat supply main pipe is provided with an exhaust hole; the exhaust pipe comprises a seamless inner pipe and a seamless outer pipe; and one port of the seamless inner pipe is welded and communicated with the exhaust hole on the heat supply main pipe, the seamless outer pipe is sleeved outside the seamless inner pipe, and one port of the seamless outer pipe is welded and fixed with the outer pipe wall of the heat supply main pipe. According to the utility model, a layer of steel sleeve is added at the position of the traditional perforated exhaust tap fillet weld, two layers of steel sleeve steel are protected by the welding sequence, the service life of the exhaust tap root fillet weld is prolonged, and the heat potential safety hazard for a heat supply pipeline is eliminated.

Description

Heat supply pipeline exhaust structure

Technical Field

The utility model relates to the technical field of heating systems, in particular to a heating pipeline exhaust structure.

Background

The thermodynamic pipe network is also called a thermodynamic pipe, and starts from a boiler room, a direct-fired machine room, a heat supply center and the like, and is a heat supply pipe from a heat source to a thermodynamic inlet of a building. The central heating circulation system uses water as a medium for transferring heat, hot water is introduced into the heating pipeline in the heating process, but when the heating pipeline is used for heating, the phenomenon that gas is not easy to discharge or is not thoroughly discharged can occur, the conveying of the heating pipe to the hot water is not facilitated, and the conveying speed of the hot water is reduced, so that air in the heating pipeline is required to be discharged during initial operation.

The existing exhaust device of the urban heat supply pipeline is generally manufactured on site, the heat supply pipeline is directly perforated, an exhaust tap is installed, and then a valve is added on the exhaust pipeline. As disclosed in the patent publication CN215763903U, in order to solve the problem of welding firmness of dissimilar steels, the exhaust pipe and the heat supply pipe are welded by adopting a socket welding connection mode, so that a fillet weld is formed at the joint of the exhaust pipe and the heat supply pipe.

And as the phi 1220 x 16 pipeline is generally adopted in the municipal primary pipe network at present, the service life is designed to be 30 years, the phi 32 x 4 pipeline is generally adopted in the exhaust pipeline, the exhaust pipe is directly installed on a large-caliber main pipe through an opening, and then an exhaust well is arranged at the position. The external surface of the tap fillet weld is directly exposed to the atmosphere for external corrosion, the internal surface is directly contacted with hot water for internal corrosion, and the root of the exhaust pipeline is often broken within 5-10 years, thereby affecting the heat supply safety operation.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and solve the technical problems that the inside and the outside of an exhaust tap fillet weld of the existing heat supply pipeline are easy to corrode, and further the heat potential safety hazard for the heat supply pipeline is generated.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

an exhaust structure of a heat supply pipeline comprises a heat supply main pipe and an exhaust pipe; the pipe wall of the heat supply main pipe is provided with an exhaust hole; the exhaust pipe comprises a seamless inner pipe and a seamless outer pipe; and one port of the seamless inner pipe is welded and communicated with the exhaust hole on the heat supply main pipe, the seamless outer pipe is sleeved outside the seamless inner pipe, and one port of the seamless outer pipe is welded and fixed with the outer pipe wall of the heat supply main pipe.

According to the utility model, a layer of steel sleeve is added at the position of the traditional perforated exhaust tap fillet weld, two layers of steel sleeve steel are protected by the welding sequence, the service life of the exhaust tap root fillet weld is prolonged, and the heat potential safety hazard for a heat supply pipeline is eliminated.

Preferably, the length of the seamless inner tube is longer than that of the seamless outer tube, and the other end of the seamless inner tube extends out of the seamless outer tube.

Preferably, the connector is a reducing joint structure with a large head end diameter and a small tail end diameter.

Preferably, the connecting piece is sleeved at the other end of the seamless inner tube, the end face of the tail end of the connecting piece is flush with the end face of the other end of the seamless inner tube, and the inner wall of the tail end of the connecting piece is welded and fixed with the outer wall of the other end of the seamless inner tube.

Preferably, the inner diameter and the outer diameter of the head end of the connecting piece are the same as the inner diameter and the outer diameter of the seamless outer pipe; and the end face of the head end of the connecting piece is welded and fixed with the end face of the other end of the seamless outer tube.

Preferably, the device further comprises an exhaust valve, and the exhaust valve is fixedly connected with the tail end of the connecting piece through a flange plate.

Preferably, the exhaust valve is a stainless steel shut-off valve.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, a layer of steel sleeve is added at the position of the traditional perforated exhaust tap fillet weld, two layers of steel sleeve steel are protected by the welding sequence, the service life of the exhaust tap root fillet weld is prolonged, and the heat potential safety hazard for a heat supply pipeline is eliminated.

Drawings

FIG. 1 is a schematic diagram of a heat supply pipe exhaust structure according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of the structure A according to the embodiment of the utility model;

fig. 3 is an enlarged schematic view of structure B according to an embodiment of the present utility model.

The reference numerals in the figures illustrate:

1. a heat supply main pipe; 2. an exhaust pipe; 201. a seamless inner tube; 202. a seamless outer tube; 3. a connecting piece; 4. and (5) exhausting the valve.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

example 1

As shown in fig. 1, the present embodiment provides a heat supply pipe exhaust structure including a heat supply main pipe 1, an exhaust pipe 2, a connecting member 3, and an exhaust valve 4.

As shown in fig. 1, the heat supply main pipe 1 of the present embodiment is a long-distance heat supply pipe with a pipe diameter of phi 325 x 8 commonly used in the existing heat supply system, and the pipe wall of the heat supply main pipe 1 is provided with an exhaust hole, which communicates the inside with the outside of the heat supply main pipe 1.

As shown in fig. 1 and 2, the exhaust pipe 2 includes a seamless inner pipe 201 and a seamless outer pipe 202, where the seamless inner pipe 201 and the seamless outer pipe 202 in this embodiment are seamless steel pipes, the pipe diameter of the seamless inner pipe 201 in this embodiment is smaller than the pipe diameter of the seamless outer pipe 202, the pipe diameter of the seamless inner pipe 201 is phi 32×3.5, and the pipe diameter of the seamless outer pipe 202 is phi 48×4; and the length of the seamless inner tube 201 is greater than the length of the seamless outer tube 202; one port of the seamless inner pipe 201 is welded and communicated with the exhaust hole on the heat supply main pipe 1, the seamless outer pipe 202 is sleeved outside the seamless inner pipe 201, one port of the seamless outer pipe 202 is welded and fixed with the outer pipe wall of the heat supply main pipe 1, and the other end of the seamless outer pipe 202 extends out of the seamless outer pipe 202.

As shown in fig. 1 and 3, the connecting piece 3 of the embodiment is a reducing joint structure with a large head end diameter and a small tail end diameter, and adopts a large head with a model of DN40/DN32 in the prior art; the connecting piece 3 is sleeved at the other end of the seamless inner pipe 201, the end face of the tail end of the connecting piece 3 is flush with the end face of the other end of the seamless inner pipe 201, and the inner wall of the tail end of the connecting piece 3 is welded and fixed with the outer wall of the other end of the seamless inner pipe 201; the inner diameter and the outer diameter of the head end of the connecting piece 3 are the same as those of the seamless outer tube 202; the head end face of the connecting piece 3 is welded and fixed with the other end face of the seamless outer tube 202.

As shown in fig. 1, the exhaust valve 4 is fixedly connected with the tail end of the connecting piece 3 through a flange plate; the exhaust valve 4 of the present embodiment is a stainless steel shut-off valve.

Working principle: the embodiment provides a heat supply pipeline exhaust structure, firstly, a hole is formed in the pipe wall of a heat supply main pipe 1, then an exhaust hole which is internally and externally communicated is formed in the pipe wall, then a port of a seamless inner pipe 201 is in butt joint with the exhaust hole, then welding is carried out, a fillet weld formed at the joint of the seamless inner pipe 201 and the heat supply main pipe 1 is polished and derusted, and then rust-proof paint is brushed at the fillet weld; coaxially sleeving the seamless outer tube 202 outside the seamless inner tube 201, welding, polishing and derusting a fillet weld formed at the joint of the seamless outer tube 202 and the heat supply main tube 1, and brushing antirust paint at the fillet weld; the big end of the connecting piece 3 is downwards sleeved on the seamless inner pipe 201 extending out of the seamless outer pipe 202, the head end face of the connecting piece 3 is welded with the end face of the other end of the seamless outer pipe 202, then the inner wall of the tail end of the connecting piece 3 is welded with the outer wall of the other end of the seamless inner pipe 201, the welded end faces are polished and derusted after welding is finished, and then rust-proof paint is brushed; finally, the exhaust valve 4 with the flange plate is arranged at the tail end of the connecting piece 3.

The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various modifications and variations can be made without departing from the spirit of the present utility model.

Claims

1. The utility model provides a heat supply pipeline exhaust structure which characterized in that: comprises a heat supply main pipe and an exhaust pipe; the pipe wall of the heat supply main pipe is provided with an exhaust hole; the exhaust pipe comprises a seamless inner pipe and a seamless outer pipe; and one port of the seamless inner pipe is welded and communicated with the exhaust hole on the heat supply main pipe, the seamless outer pipe is sleeved outside the seamless inner pipe, and one port of the seamless outer pipe is welded and fixed with the outer pipe wall of the heat supply main pipe.

2. A heating conduit exhaust structure according to claim 1, wherein: the length of the seamless inner tube is longer than that of the seamless outer tube, and the other end of the seamless inner tube extends out of the seamless outer tube.

3. A heating conduit exhaust structure according to claim 2, wherein: the connecting piece is of a reducing joint structure with a large head end diameter and a small tail end diameter.

4. A heating conduit exhaust structure according to claim 3, wherein: the connecting piece cover is established at the other end of seamless inner tube, the terminal surface of the tail end of connecting piece flushes with the terminal surface of the other end of seamless inner tube, just the inner wall of the tail end of connecting piece and the outer wall welded fastening of the seamless inner tube other end.

5. A heating conduit exhaust structure according to claim 4, wherein: the inner diameter and the outer diameter of the head end of the connecting piece are the same as those of the seamless outer pipe; and the end face of the head end of the connecting piece is welded and fixed with the end face of the other end of the seamless outer tube.

6. A heating conduit exhaust structure according to claim 3, wherein: the air vent valve is fixedly connected with the tail end of the connecting piece through the flange plate.

7. A heating conduit exhaust structure according to claim 6, wherein: the exhaust valve is a stainless steel stop valve.