CN211176987U

CN211176987U - Multi-region temperature division control system for distributed variable-frequency two-stage pump of central heating heat exchange station

Info

Publication number: CN211176987U
Application number: CN201922188928.8U
Authority: CN
Inventors: 王海阔
Original assignee: Beijing Aotianqi Energy Technology Co ltd
Current assignee: Beijing Aotianqi Energy Technology Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-04
Anticipated expiration: 2029-12-06

Abstract

A multi-zone temperature-division control system of a distributed variable-frequency two-stage pump of a centralized heat supply and exchange station comprises a primary network heat supply pipeline system, a heat exchange system and a distributed control system; the primary side water supply pipe and the primary side water return pipe form a circulating pipeline, and the primary side distributed secondary pump is arranged on the primary side water return pipe; one end of the first water supply pipe is connected with the primary side water supply pipe, the other end of the first water supply pipe is connected with the plate type heat exchanger, and the electric regulating valve is arranged on the first water supply pipe; one end of the first water return pipe is connected with the second water supply pipe, and the other end of the first water return pipe is connected with the plate heat exchanger; one end of the second water return pipe is connected with the plate heat exchanger, and the other end of the second water return pipe is connected with the primary side water return pipe; the secondary side circulating pump is arranged on the first water return pipe; the heat exchange systems are arranged in multiple groups and connected in parallel to the primary network heat supply pipeline system; the control system is in control connection with the electric regulating valve. The utility model discloses in, through the aperture of control electrical control valve, can realize the heat supply as required of different regions, on the basis of economize on electricity, realize the effect of festival heat.

Description

Multi-region temperature division control system for distributed variable-frequency two-stage pump of central heating heat exchange station

Technical Field

The utility model relates to a central heating heat transfer system field especially relates to a central heating heat transfer station distributing type frequency conversion second grade pump multizone divides warm control system.

Background

The distributed variable-frequency secondary pump heat supply system is a heat supply system which is provided with a pressure water pump on a primary side water return pipe of a heat exchange station heat exchanger for flow regulation, a primary main circulating pump is usually arranged in a boiler room, the pump lift only bears the internal resistance of the boiler room or the internal resistance of the boiler room and the partial circulating resistance of an external network main line, and a secondary pump arranged in each single heat exchange station bears the resistance of the main line, the resistance from a branch line to the heat exchange station and the resistance of primary water in the heat exchange station. For some buildings with inconsistent heating load changes, such as commercial residential complexes, the energy-saving operation of the heating system of the buildings requires time-sharing zone control of the heating load of different buildings, and the existing primary-side distributed secondary pump is difficult to meet the requirement on the premise of not adding control measures.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to solve the technical problems existing in the background technology, the utility model provides a multi-temperature-distribution control system of a distributed variable frequency secondary pump of a central heating heat exchange station, which can realize the heating load of a regulation area system by controlling the opening degree of an electric regulating valve, supply heat as required and improve the effect of central heating; the heat supply of the regional system is adjusted, and the heat-saving effect is realized on the basis of saving electricity.

(II) technical scheme

The utility model provides a multi-region temperature-division control system of a distributed variable-frequency secondary pump of a centralized heat supply heat exchange station, which comprises a primary network heat supply pipeline system, a heat exchange system and a distributed control system;

the primary network heat supply pipeline system comprises a primary side water supply pipe, a primary side water return pipe and a primary side distributed secondary pump; the primary side water supply pipe and the primary side water return pipe form a circulating pipeline, and the primary side distributed secondary pump is arranged on the primary side water return pipe;

the heat exchange system comprises a first water supply pipe, a second water supply pipe, a first water return pipe, a second water return pipe, a plate type heat exchanger, an electric regulating valve and a secondary side circulating pump;

one end of the first water supply pipe is connected with the primary side water supply pipe, the other end of the first water supply pipe is connected with the plate type heat exchanger, and the electric regulating valve is arranged on the first water supply pipe; one end of the first water return pipe is connected with the second water supply pipe, and the other end of the first water return pipe is connected with the plate heat exchanger; one end of the second water return pipe is connected with the plate heat exchanger, and the other end of the second water return pipe is connected with the primary side water return pipe; the secondary side circulating pump is arranged on the first water return pipe; the heat exchange systems are arranged in multiple groups and connected in parallel to the primary network heat supply pipeline system;

the distributed control system is in control connection with the electric control valve.

Preferably, the electric control valve is made of stainless steel.

The above technical scheme of the utility model has following profitable technological effect: the electric regulating valve is arranged on the primary side of the plate heat exchanger, so that the control precision of primary side variable flow regulation is accurate to the area of each plate heat exchanger of the heat exchange station; by controlling the opening of the electric regulating valve, the heat supply of a regulating area system can be realized, heat is supplied according to needs, and the effect of centralized heat supply is improved; the heat supply of the regional system is adjusted, and the heat-saving effect is realized on the basis of saving electricity.

Drawings

Fig. 1 is a schematic structural view of a distributed variable frequency two-stage pump multi-zone temperature-division control system of a central heating heat exchange station.

Reference numerals: 1. a primary side distributed secondary pump; 2. an electric control valve; 3. a plate heat exchanger; 4. a secondary side circulating pump; 5. a distributed control system; 6. a primary network heat supply pipeline system; 61. a primary-side water supply pipe; 62. a primary side water return pipe; 7. a heat exchange system; 71. a first water supply pipe; 72. a second water supply pipe; 73. a first water return pipe; 74. a second water return pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, the multi-temperature-distribution control system of distributed variable frequency two-stage pump of the centralized heat-exchanging station provided by the utility model comprises a primary network heat-supplying pipeline system 6, a heat-exchanging system 7 and a distributed control system 5;

the primary network heat supply pipeline system 6 comprises a primary side water supply pipe 61, a primary side water return pipe 62 and a primary side distributed secondary pump 1; the primary side water supply pipe 61 and the primary side water return pipe 62 constitute a circulation pipeline, and the primary side distributed secondary pump 1 is arranged on the primary side water return pipe 62;

the heat exchange system 7 comprises a first water supply pipe 71, a second water supply pipe 72, a first water return pipe 73, a second water return pipe 74, the plate heat exchanger 3, the electric regulating valve 2 and the secondary side circulating pump 4;

one end of the first water supply pipe 71 is connected to the primary-side water supply pipe 61, and the other end is connected to the plate heat exchanger 3, and the electric control valve 2 is provided in the first water supply pipe 71; one end of the first water return pipe 73 is connected with the second water supply pipe 72, and the other end is connected with the plate heat exchanger 3; one end of the second water return pipe 74 is connected with the plate heat exchanger 3, and the other end is connected with the primary side water return pipe 62; the secondary side circulating pump 4 is arranged on the first water return pipe 73; the heat exchange systems 7 are arranged in multiple groups and connected in parallel to the primary network heat supply pipeline system 6;

the distributed control system 5 is in control connection with the electric control valve 2.

In the utility model, the electric control valve 2 is arranged on the primary side of the plate heat exchanger 3, so that the control precision of the primary side variable flow regulation is accurate to the area of each plate heat exchanger of the heat exchange station; by controlling the opening degree of the electric regulating valve 2, the heat supply quantity of a regulating area system can be realized, heat is supplied according to needs, and the effect of centralized heat supply is improved; the heat supply of the regional system is adjusted, and the heat-saving effect is realized on the basis of saving electricity.

In an alternative embodiment, the electric control valve 2 is made of stainless steel; the rust-proof protection prolongs the service life of the equipment.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A multi-zone temperature-division control system of a distributed variable-frequency two-stage pump of a centralized heat supply heat exchange station is characterized by comprising a primary network heat supply pipeline system (6), a heat exchange system (7) and a distributed control system (5);

the primary network heat supply pipeline system (6) comprises a primary side water supply pipe (61), a primary side water return pipe (62) and a primary side distributed secondary pump (1); a primary side water supply pipe (61) and a primary side water return pipe (62) form a circulating pipeline, and the primary side distributed secondary pump (1) is arranged on the primary side water return pipe (62);

the heat exchange system (7) comprises a first water supply pipe (71), a second water supply pipe (72), a first water return pipe (73), a second water return pipe (74), a plate type heat exchanger (3), an electric regulating valve (2) and a secondary side circulating pump (4);

one end of a first water supply pipe (71) is connected with the primary side water supply pipe (61), the other end of the first water supply pipe is connected with the plate heat exchanger (3), and the electric control valve (2) is arranged on the first water supply pipe (71); one end of the first water return pipe (73) is connected with the second water supply pipe (72), and the other end is connected with the plate heat exchanger (3); one end of the second water return pipe (74) is connected with the plate heat exchanger (3), and the other end of the second water return pipe is connected with the primary side water return pipe (62); the secondary side circulating pump (4) is arranged on the first water return pipe (73); a plurality of groups of heat exchange systems (7) are arranged and connected in parallel on the primary network heat supply pipeline system (6);

the distributed control system (5) is in control connection with the electric regulating valve (2).

2. The distributed variable-frequency two-stage pump multi-temperature-division control system for the central heating heat exchange station according to claim 1, wherein the electric regulating valve (2) is made of stainless steel.