CN209893979U - Spike Cooling System for Indirect Air Cooling Units - Google Patents

Abstract

The utility model relates to a peak cooling system of an indirect air cooling unit, which comprises an air cooling unit condenser, an air cooling unit cooling tower and a water cooling unit condenser; the condenser of the air cooling unit is connected with the cooling tower of the air cooling unit through a circulating water pipeline, the circulating water pipeline comprises a first pipeline and a second pipeline, cooling circulating water in the first pipeline flows to the condenser of the air cooling unit from the cooling tower of the air cooling unit, and cooling circulating water in the second pipeline flows to the cooling tower of the air cooling unit from the condenser of the air cooling unit; the circulating water pipeline is connected with at least one heat exchange branch, the heat exchange branch is provided with a heat exchanger, an inlet of the heat exchanger is connected with a second pipeline and a condenser of the water-cooling unit, an outlet of the heat exchanger is connected with a first pipeline, and the heat exchange branch is used for cooling circulating water of the indirect air-cooling unit through condensed water of the water-cooling unit and heating the condensed water through the cooling circulating water. The utility model discloses can effectual recovery indirect air cooling unit's waste heat, reduce the exhaust pressure of air cooling unit simultaneously, reach energy saving and consumption reduction's purpose.

Description

Spike Cooling System for Indirect Air Cooling Units

technical field

The utility model relates to the technical field of waste heat recovery of thermal power plants, in particular to a peak cooling system of an indirect air cooling unit.

Background technique

Under the general trend of energy conservation and emission reduction, the waste heat recovery of thermal power plants and the cooling of air-cooled steam turbine exhaust steam are imperative. There are more and more projects for waste heat recovery and air-cooled steam turbine exhaust cooling in power plants. high.

In view of the above-mentioned defects, the designer actively researches and innovates, and hopes to create a waste heat utilization system for air-cooled power plants for power plants with air-cooled units and water-cooled units, so as to achieve the purpose of energy saving and consumption reduction.

Utility model content

The purpose of this utility model is to provide a peak cooling system for an indirect air-cooling unit. For a power plant having both an indirect air-cooling unit and a water-cooling unit, the system can effectively recover the waste heat of the indirect air-cooling unit and reduce the exhaust pressure of the air-cooling unit at the same time. To achieve the purpose of energy saving and consumption reduction.

The utility model provides a peak cooling system of an indirect air-cooling unit, which comprises an indirect air-cooling unit and a water-cooling unit, the indirect air-cooling unit includes a condenser of the air-cooling unit and a cooling tower of the air-cooling unit, and the water-cooling unit includes a condenser of the water-cooling unit;

The condenser of the air-cooling unit is connected to the cooling tower of the air-cooling unit through a circulating water pipeline. The circulating water pipeline includes a first pipeline and a second pipeline. The cooling circulating water in the first pipeline flows from the cooling tower of the air-cooling unit to the condenser of the air-cooling unit. The cooling circulating water in the pipeline flows from the condenser of the air-cooling unit to the cooling tower of the air-cooling unit;

The circulating water pipeline is connected with at least one heat exchange branch, and the heat exchange branch is provided with a heat exchanger. The inlet of the heat exchanger is connected to the second pipeline and the condenser of the water cooling unit, and the outlet is connected to the first pipeline. The cooling circulating water of the indirect air-cooling unit is cooled by the condensed water of the water-cooled unit, and the condensed water is heated by the cooling circulating water.

Further, the first pipeline is provided with a circulating water pump and a valve for the air cooling unit.

Further, the inlet and outlet pipes of the heat exchanger are provided with valves.

Further, the condenser of the water-cooled unit is connected to the inlet of the heat exchanger through the condensed water pipeline of the water-cooled unit.

Further, the water-cooling unit condensate water pipeline is provided with a valve and a water-cooling unit condensing pump.

Further, the outlet of the heat exchanger is also connected with the low pressure heater of the water cooling unit.

Further, the cooling tower of the air-cooling unit is an indirect circulating water cooling tower.

Further, the condenser is a water-cooled condenser or an air-cooled condenser.

Further, the condenser is a dividing wall condenser or a contact condenser.

Further, the heat exchanger is one of a partition heat exchanger, a fluid-connected indirect heat exchanger, a direct contact heat exchanger, and a compound heat exchanger.

With the above solution, through the peak cooling system of the indirect air-cooling unit, the waste heat of the indirect air-cooling unit can be effectively recovered, and the exhaust pressure of the air-cooling unit can be reduced at the same time, so as to achieve the purpose of energy saving and consumption reduction.

The above description is only an overview of the technical solution of the present utility model. In order to understand the technical means of the present utility model more clearly, and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the present utility model and the accompanying drawings as follows: back.

Description of drawings

FIG. 1 is a schematic structural diagram of the peak cooling system of the indirect air cooling unit of the present invention.

Labels in the figure:

1- Air-cooled unit steam turbine low pressure cylinder; 2- Air-cooled unit low-pressure heater; 3- Air-cooled unit condenser; 4- Air-cooled unit condensate pump; 5-- Air-cooled unit cooling tower; 6- The first pipeline; 7- The second pipeline ; 8- Air-cooled unit circulating water pump; 9- Water-cooled unit steam turbine low-pressure cylinder; 10- Water-cooled unit low-pressure heater; 11- Water-cooled unit condenser; 12- Water-cooled unit Condensate water pipeline; 13- Heat exchanger; Condensate pump; 15-valve.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

1, this embodiment provides a peak cooling system for an indirect air-cooled unit, including an indirect air-cooled unit and a water-cooled unit, the indirect air-cooled unit includes an air-cooled unit condenser 3 and an air-cooled unit cooling tower 5, and the water-cooled unit includes a water-cooled unit. The condenser 11 of the unit; the condenser 3 of the air-cooled unit is connected to the cooling tower 5 of the air-cooled unit through a circulating water pipeline. The circulating water pipeline includes a first pipeline 6 and a second pipeline 7, and the cooling circulating water in the first pipeline 6 is cooled by the air-cooled unit. The cooling tower 5 flows to the condenser 3 of the air-cooling unit, and the cooling circulating water in the second pipeline 7 flows from the condenser 3 of the air-cooling unit to the cooling tower 5 of the air-cooling unit; the circulating water pipeline is connected with at least one heat exchange branch, and the heat exchange branch A heat exchanger 13 is provided, the inlet of the heat exchanger 13 is connected to the second pipe 7 and the condenser 11 of the water cooling unit, and the outlet is connected to the first pipe 6, and the heat exchange branch is used for cooling the indirect air cooling unit through the condensed water of the water cooling unit. The circulating water is cooled, and the condensed water is heated by the cooling circulating water. The water cooling unit can be two or more units.

The peak cooling system of the indirect air-cooled unit cools the circulating water of the air-cooled unit by introducing the cooling circulating water of the air-cooled unit into the condensed water of the water (wet) cooling unit, and then heats the circulating water of the air-cooled unit through the heat exchanger and the condensed water of the water-cooled unit. The condensed water of the water-cooled unit is cooled, which not only cools the exhaust steam of the air-cooled unit, but also heats the condensed water of the water-cooled unit, so as to realize the exhaust cooling of the air-cooled unit and the condensed water heating of the water-cooled unit at the same time, and realize the waste heat of the air-cooled power plant. The purpose of energy saving and consumption reduction is achieved.

In this embodiment, the first pipeline 6 is provided with a circulating water pump 8 and a valve 15 for the air cooling unit.

In this embodiment, the inlet and outlet pipes of the heat exchanger 13 are provided with valves 15 .

In this embodiment, the condenser 11 of the water-cooled unit is connected to the inlet of the heat exchanger 13 through the condensed water pipeline 12 of the water-cooled unit.

In this embodiment, the condensate pipeline 12 of the water-cooling unit is provided with a valve 15 and a condensing pump 14 of the water-cooling unit.

In this embodiment, the outlet of the heat exchanger 13 is also connected to the low-pressure heater 10 of the water-cooled unit.

In this embodiment, the cooling tower 5 of the air-cooling unit is an indirect circulating water cooling tower.

In this embodiment, the condensers (air-cooled unit condenser 3 and water-cooled unit condenser 11 ) are water-cooled condensers or air-cooled condensers.

In this embodiment, the condenser is a dividing wall condenser or a contact condenser.

In this embodiment, the heat exchanger 13 is one of a partition heat exchanger, a fluid-connected indirect heat exchanger, a direct contact heat exchanger, and a compound heat exchanger.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, they can also do Several improvements and modifications are made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. The peak cooling system of the indirect air cooling unit is characterized by comprising the indirect air cooling unit and a water cooling unit, wherein the indirect air cooling unit comprises an air cooling unit condenser and an air cooling unit cooling tower, and the water cooling unit comprises a water cooling unit condenser;

the condenser of the air cooling unit is connected with the cooling tower of the air cooling unit through a circulating water pipeline, the circulating water pipeline comprises a first pipeline and a second pipeline, cooling circulating water in the first pipeline flows to the condenser of the air cooling unit from the cooling tower of the air cooling unit, and cooling circulating water in the second pipeline flows to the cooling tower of the air cooling unit from the condenser of the air cooling unit;

circulating water pipeline is connected with at least heat transfer branch road all the way, the heat transfer branch road is equipped with the heat exchanger, the access connection of heat exchanger second pipeline and water chiller condenser, exit linkage first pipeline, the heat transfer branch road is used for passing through the condensate water cooling of water chiller the refrigeration cycle water of indirect air chiller, and pass through the refrigeration cycle water heating the condensate water.

2. The spike cooling system of an indirect air cooling unit of claim 1, wherein the first pipeline is provided with a circulating water pump and a valve of the air cooling unit.

3. The spike cooling system of the indirect air cooling unit of claim 2, wherein the inlet and outlet pipes of the heat exchanger are valved.

4. The spike cooling system of an indirect air cooling unit of claim 1, wherein the water chiller condenser is connected to the inlet of the heat exchanger through a water chiller condensate line.

5. The spike cooling system of the indirect air cooling unit of claim 4, wherein the condensate water pipe of the water cooling unit is provided with a valve and a condensate pump of the water cooling unit.

6. The spike cooling system of an indirect air cooling train of claim 1, wherein the heat exchanger outlet is further connected to a low pressure heater of the water cooling train.

7. The spike cooling system of an indirect air cooling unit of claim 1, wherein the cooling tower of the air cooling unit is an indirect circulating water cooling tower.

8. The peak cooling system of an indirect air-cooling unit according to claim 1, wherein the condenser is a water-cooled condenser or an air-cooled condenser.

9. The spike cooling system of an indirect air-cooling unit of claim 1, wherein the condenser is a dividing wall condenser or a contact condenser.

10. The spike cooling system of an indirect air cooling train of claim 1, wherein the heat exchanger is one of a dividing wall heat exchanger, a fluid-coupled indirect heat exchanger, a direct contact heat exchanger, and a multiple heat exchanger.

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