CN219083293U

CN219083293U - Regional cold supply system utilizing pipe network for cold accumulation

Info

Publication number: CN219083293U
Application number: CN202223593033.0U
Authority: CN
Inventors: 吴明训; 侯震林; 李海波; 黄飞强; 田超
Original assignee: Guodian Investment Lingshui Smart Energy Co ltd
Current assignee: Guodian Investment Lingshui Smart Energy Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-26
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a regional cold supply system utilizing pipe network cold accumulation, which comprises a water chilling unit, wherein the water chilling unit is connected with a water supply pipe network through a pipeline, the water chilling unit is connected with a water return pipe network through a water pump, and the water chilling unit is connected with a user cold supply plate through the water supply pipe network; the utility model can improve the running economy of the whole system through the first electric valve, the second electric valve, the water supply network, the water return network and the user cooling plate exchange, can fully utilize peak-valley electricity price by utilizing the network cold accumulation, reduce the occupied area of the energy station, reduce the initial investment and have higher economic and social benefits.

Description

Regional cold supply system utilizing pipe network for cold accumulation

Technical Field

The utility model belongs to the field of regional cooling, and particularly relates to a regional cooling system utilizing pipe network cold accumulation.

Background

The regional cooling system is a system for intensively producing chilled water from a specific energy station and delivering the chilled water to each cold building through a chilled water pipe network so as to provide a cooling air conditioning service in order to meet the cooling load demands of a plurality of buildings in a specific region. The regional cooling system is large in general scale, and after being combined with a water cold accumulation technology, the regional cooling system can fully utilize peak-valley electricity price difference, accumulate cold in a valley electricity period, release cold and adjust peak in a peak cold period in daytime, so that the installed capacity of a main machine can be reduced, the power load is balanced, and the energy consumption cost can be reduced.

However, because the energy storage density of water is low, only sensible heat of water can be stored, so the occupied area of the cold storage water tank is large, and particularly for a large-scale regional cold supply system, the area of an energy station is overlarge, and the initial investment is increased.

In summary, the present utility model provides a regional cooling system using pipe network to store cold, so as to solve the above problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a regional cold supply system utilizing pipe network cold accumulation, which solves the problems of large occupied area of a cold accumulation water tank, increased initial investment and the like because the energy storage density of water is low and only the sensible heat of the water can be stored in the prior art.

The utility model provides an utilize regional cooling system of pipe network cold-storage, includes the cooling water set, the cooling water set has the water supply pipe network through the pipe connection, the cooling water set is connected with the return water pipe network through the water pump, the cooling water set is connected with the user through the water supply pipe network and supplies the cold plate to trade.

As a technical scheme of the utility model, the water supply pipe network is connected with the water return pipe network through the user cooling plate exchange.

As a technical scheme of the utility model, a first electric valve is arranged between the water chilling unit and the water supply network and between the water chilling unit and the water pump.

As a technical scheme of the utility model, second electric valves are arranged between the water supply network and the user cooling plate exchange and between the user cooling plate exchange and the backwater network.

As a technical scheme of the utility model, the user cooling plate exchanger is connected to the tail end of the user air conditioner through a pipeline.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model can improve the running economy of the whole system through the first electric valve, the second electric valve, the water supply network, the water return network and the user cooling plate exchange, can fully utilize peak-valley electricity price by utilizing the network cold accumulation, reduce the occupied area of the energy station, reduce the initial investment and have higher economic and social benefits.

Drawings

FIG. 1 is a schematic flow chart of the present utility model.

In the figure:

1. a water chiller; 2. a water supply network; 3. a backwater pipe network; 4. the user supplies cold plate exchange; 5. a first electrically operated valve; 6. a second electrically operated valve; 7. and (3) a water pump.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1, the utility model provides a regional cold supply system utilizing pipe network cold accumulation, which comprises a water chilling unit 1, wherein the water chilling unit 1 is connected with a water supply pipe network 2 through a pipeline, the water chilling unit 1 is connected with a water return pipe network 3 through a water pump 7, the water chilling unit 1 is connected with a user cold supply plate 4 through the water supply pipe network 2, the pipe network cold accumulation is performed during low-valley electricity prices at night, and cold energy is stored by utilizing water capacity in the water supply pipe network 2 by low-temperature chilled water provided by the water chilling unit 1 in an energy station. When a user starts to use energy in daytime, the pipe network releases cold energy to perform cold supply; when the cold energy stored by the water capacity in the water supply network 2 is insufficient or used up, the water chilling unit 1 is started to provide chilled water.

As an embodiment of the present utility model, the water supply network 2 is connected to the water return network 3 through the user cooling plate exchanger 4.

As an embodiment of the present utility model, a first electrically operated valve 5 is provided between the water chiller 1 and the water supply network 2 and the water pump 7, and the communication between the water chiller 1 and the water supply network 2 is controlled by the first electrically operated valve 5.

As an embodiment of the present utility model, a second electric valve 6 is disposed between the water supply network 2 and the user cooling plate exchanger 4 and between the user cooling plate exchanger 4 and the water return network 3, so as to control the communication between the user cooling plate exchanger 4 and the water supply network 2 and the water return network 3.

As an embodiment of the present utility model, the user cooling plate exchanger 4 is connected to the user air conditioning terminal through a pipe.

The specific working principle is as follows:

the pipe network cold accumulation is carried out at night in low electricity prices, the first electric valve 5 is closed, and the second electric valve 6 is opened; the low-temperature chilled water provided by the water chilling unit 1 in the energy station passes through the water supply network 2, stores cold energy by utilizing the water capacity in the water supply network 2, passes through a bypass pipe where the second electric valve 6 is positioned, and returns to the water chilling unit 1 from the water return network 3;

when the pipe network releases cold, the second electric valve 6 is opened, the first electric valve 5 is closed, and the water chilling unit 1 does not operate; the low-temperature chilled water in the water supply network 2 is cooled to the tail end of a user air conditioner after heat exchange by a user cooling plate 4, and the low-temperature chilled water continuously circulates between the water supply network 2 and the backwater network 3 through a bypass pipe where the first electric valve 5 is positioned;

when the water capacity in the water supply network 2 is insufficient or the water is used, the first electric valve 5 and the second electric valve 6 are closed, the water chilling unit 1 is started to provide chilled water, and after heat exchange is performed through the user cooling plate 4, the chilled water is cooled to the tail end of the user air conditioner.

The embodiments of the present utility model have been shown and described for the purpose of illustration and description, it being understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made therein by one of ordinary skill in the art without departing from the scope of the utility model.

Claims

1. The utility model provides an utilize regional cold supply system of pipe network cold-storage, includes cooling water set (1), its characterized in that: the water chiller (1) is connected with a water supply pipe network (2) through a pipeline, the water chiller (1) is connected with a water return pipe network (3) through a water pump (7), and the water chiller (1) is connected with a user cooling plate exchanger (4) through the water supply pipe network (2);

the water supply network (2) is connected with the water return network (3) through the user cooling plate exchanger (4);

a first electric valve (5) is arranged between the water chilling unit (1) and the water supply network (2) as well as between the water pump (7);

and a second electric valve (6) is arranged between the water supply pipe network (2) and the user cooling plate exchanger (4) and between the user cooling plate exchanger (4) and the backwater pipe network (3).

2. The regional cooling system utilizing pipe network for cold accumulation as claimed in claim 1, wherein: the user cooling plate exchanger (4) is connected to the tail end of the user air conditioner through a pipeline.