CN209978138U

CN209978138U - Heat supply system for district central heat supply secondary pipe network

Info

Publication number: CN209978138U
Application number: CN201920742430.9U
Authority: CN
Inventors: 李文静; 周营营; 毕文娟
Original assignee: Qingdao Kaiyuan Thermal Design And Research Institute Co Ltd
Current assignee: Qingdao Kaiyuan Thermal Design And Research Institute Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-01-21
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a heating system for district central heating second grade pipe network, including delivery pipe and wet return, delivery pipe and wet return all adopt the PE-RT plastic tubing, and the PE-RT plastic tubing lays to before the building seat, the delivery pipe includes low district delivery pipe and high district delivery pipe, the wet return includes low district wet return and high district wet return, be equipped with the force (forcing) pump on the high district delivery pipe, even there is the check valve of waterproof attack between the inlet tube of force (forcing) pump and the outlet pipe, be equipped with electrical control valve on the high district wet return. Compared with the prior art, the utility model the advantage lie in: the problem of high and low district heat supply simultaneously by utilizing PE-RT plastic pipe is solved, the steel pipe corrosion problem has been solved to and the plastic conduit pressure-bearing is less problem, has also satisfied resident's heat supply requirement simultaneously.

Description

Heat supply system for district central heat supply secondary pipe network

Technical Field

The utility model relates to a heating system for district central heating second grade pipe network.

Background

The central heating is an important infrastructure for building modern cities, and not only can provide stable and reliable high-grade heat sources for the cities, improve the living environmental conditions, but also can save energy, reduce energy consumption, reduce urban pollution and protect the ecological environment. With the continuous development of urban central heating, some problems in the original heating system are gradually highlighted. The traditional two-stage network pipeline adopts steel pipes for direct-buried or overhead laying after heat preservation, and has the problems of serious pipeline corrosion, large pipeline network resistance and the like. In addition, the pressure bearing capacity of the plastic pipe does not meet the design pressure of a high-area heating system.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a heating system for district central heating second grade pipe network.

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a heating system for district central heating second grade pipe network, includes delivery pipe and wet return, delivery pipe and wet return all adopt the PE-RT plastic tubing, and before the PE-RT plastic tubing laid to the building seat, the delivery pipe includes low district delivery pipe and high district delivery pipe, the wet return includes low district wet return and high district wet return, be equipped with the force (forcing) pump on the high district delivery pipe, even there is the check valve of waterproof attack between the inlet tube of force (forcing) pump and the outlet pipe, be equipped with electrical control valve on the high district wet return.

As an improvement, the inlets and outlets of the water supply pipe and the water return pipe are respectively provided with a butterfly valve.

Compared with the prior art, the utility model the advantage lie in: the problem of high and low district heat supply simultaneously by utilizing PE-RT plastic pipe is solved, the steel pipe corrosion problem has been solved to and the plastic conduit pressure-bearing is less problem, has also satisfied resident's heat supply requirement simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a heating system for a district central heating secondary pipe network.

As shown in the figure: 1. the water supply pipe, 1.1 low district's water supply pipe, 1.2 high district's water supply pipe, 2, wet return, 2.1 low district wet return, 2.2 high district wet return, 3, force (forcing) pump, 4, check valve, 5, electrical control valve, 6, butterfly valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With the attached drawings, the heating system for the district central heating secondary pipe network comprises a water supply pipe 1 and a water return pipe 2, the inlet and the outlet of the water supply pipe 1 and the water return pipe 2 are respectively provided with a butterfly valve 6, the water supply pipe 1 and the water return pipe 2 are respectively provided with a PE-RT plastic pipe, the PE-RT plastic pipes are laid to the building base, the water supply pipe 1 comprises a low-region water supply pipe 1.1 and a high-region water supply pipe 1.2, the water return pipe 2 comprises a low-region water return pipe 2.1 and a high-region water return pipe 2.2, a pressure pump 3 is arranged on the high-region water supply pipe 1.2, a check valve 4 for preventing water hammer is connected between an inlet pipe and an outlet pipe of the pressure pump 3, and an electric adjusting valve 5 is.

When the utility model is implemented, the pipeline of the district secondary network is led out from the heat exchange station (the high and low areas of the pipe network part), and PE-RT plastic pipes are adopted to be laid in front of each building seat, and the pipeline of the low area is directly connected into the riser of the low area through the secondary network; the high-area pipeline is connected out by a secondary network, a pressure pump is arranged on the high-area water supply pipeline, and an electric regulating valve is arranged on the high-area water return pipeline.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a heating system for district central heating second grade pipe network, includes delivery pipe and wet return, its characterized in that: the water supply pipe and the water return pipe are made of PE-RT plastic pipes, the PE-RT plastic pipes are laid to the building base, the water supply pipe comprises a low-region water supply pipe and a high-region water supply pipe, the water return pipe comprises a low-region water return pipe and a high-region water return pipe, a pressure pump is arranged on the high-region water supply pipe, a check valve for preventing water hammer is connected between an inlet pipe and an outlet pipe of the pressure pump, and an electric adjusting valve is arranged on the high-region water return pipe.

2. The heating system for the district central heating secondary pipe network according to claim 1, characterized in that: and butterfly valves are arranged at the inlets and the outlets of the water supply pipe and the water return pipe.