CN219101430U - A circulating water pump energy storage standby cooling water system - Google Patents

Abstract

The utility model discloses an energy storage standby cooling water system of a circulating water pump, which comprises a pressure storage tank, an electromagnetic valve, a circulating water pump cooler and a circulating water pump self-cooling pipeline, wherein the electromagnetic valve is arranged on the pressure storage tank; the pressure storage tank is internally provided with an energy storage leather bag, an outlet of the pressure storage tank is communicated with an inlet of the electromagnetic valve, an outlet of the electromagnetic valve is communicated with an inlet of the circulating water pump cooler, an outlet of the circulating water pump cooler is communicated with an inlet of the circulating water pump self-cooling pipeline, and an outlet of the circulating water pump self-cooling pipeline is communicated with an outlet pipeline of the electromagnetic valve.

Description

A circulating water pump energy storage standby cooling water system

technical field

The utility model belongs to the technical field of energy storage and relates to a cooling water system, in particular to a circulating water pump energy storage standby cooling water system.

Background technique

As a large auxiliary equipment of the thermal power station, the circulating water pump provides circulating water to the condenser to take away the heat of the steam exhausted by the low-pressure cylinder during the operation of the unit, so that the steam condenses into water and maintains the vacuum of the condenser. The circulating water pump needs continuous and stable cooling water to take away the heat of its own bearings and coils during operation, so as to ensure the safe and stable operation of the circulating water pump. At this stage, there are two cooling water designs for the circulating water pump: one is taken from the outlet of the circulating water pump, that is, during the operation stage of the circulating water pump, the cooling water is provided to itself through the outlet of the circulating water pump; the other is taken from the industrial water pump, that is, it is used as a backup when the circulating water pump is not started In the state, the cooling water is continuously provided through the industrial water pump to ensure that the circulating water pump can be started at any time. When the circulating water pump starts normally, the cooling water provided by the industrial water pump can be switched to the cooling water at the outlet of the circulating water pump, and the industrial water pump can be stopped. The number of circulating water pumps in most thermal power plants is designed to be two to three, and the operating personnel will adjust the number of circulating water pumps according to the ambient temperature and unit load, which makes the circulating water pumps in the standby state need to continuously provide cooling water so that they can be started at any time . Long-term operation of the industrial water pump to provide cooling water to the circulating water pump will inevitably increase the power consumption of the unit, and the long-term operation of the industrial water pump will also increase the operation and maintenance cost of the unit.

Utility model content

The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art and provide a circulating water pump energy storage backup cooling water system, which can avoid the problem of high cost caused by using the circulating water pump in the standby state.

In order to achieve the above purpose, the circulating water pump energy storage backup cooling water system described in the utility model includes a pressure storage tank, a solenoid valve, a circulating water pump cooler and a circulating water pump self-cooling pipeline;

There is an energy storage bladder inside the pressure storage tank, the outlet of the pressure storage tank is connected with the inlet of the solenoid valve, the outlet of the solenoid valve is connected with the inlet of the circulating water pump cooler, the outlet of the circulating water pump cooler is connected with the self-cooling pipe of the circulating water pump The inlet is connected, and the outlet of the self-cooling pipeline of the circulating water pump is connected with the outlet pipeline of the solenoid valve.

A pressure gauge is installed on the pressure storage tank.

The outlet of the circulating water pump from the cooling pipeline is connected with the outlet pipeline of the electromagnetic valve through the check gate.

The outlet of the circulating water pump cooler communicates with the inlet of the circulating water pump self-cooling pipeline through the circulating water pump.

It also includes a pressure stabilizing pump, wherein the outlet of the stabilizing pump communicates with the pressure storage tank.

A control valve is arranged at the outlet of the pressure stabilizing pump.

The utility model has the following beneficial effects:

During specific operation of the circulating water pump energy storage standby cooling water system described in the utility model, when the circulating water pump is started, the solenoid valve is opened, and under the action of the energy storage bladder, the water stored in the pressure storage tank immediately enters the circulating water pump cooler , at this time, the outlet of the circulating water pump is gradually pressurized from the cooling pipe. When the internal pressure of the pressure storage tank drops to the outlet pressure of the circulating water pump, the solenoid valve is closed, and the circulating water pump realizes self-cooling, that is, the cycle of the standby state of the transmission is replaced by the pressure storage tank. Water pumps to reduce plant power consumption, reduce unit operation and maintenance into pumps, and improve equipment operation reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among them, 1 is the pressure stabilizing pump, 2 is the pressure storage tank, 3 is the energy storage bladder, 4 is the pressure gauge, 5 is the solenoid valve, 6 is the circulating water pump, 7 is the circulating water pump cooler, 8 is the self-cooling pipe of the circulating water pump, 9 is a backstop door.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the utility model. Obviously, the described The embodiment is only a part of the embodiment of the utility model, not all the embodiments, and is not intended to limit the disclosed scope of the utility model. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

The schematic structural diagrams according to the disclosed embodiments of the utility model are shown in the accompanying drawings. The figures are not drawn to scale, with certain details exaggerated and possibly omitted for clarity of presentation. The shapes of various regions and layers shown in the figure and their relative sizes and positional relationships are only exemplary, and may deviate due to manufacturing tolerances or technical limitations in practice, and those skilled in the art may Regions/layers with different shapes, sizes, and relative positions can be additionally designed as required.

Referring to Fig. 1, the circulating water pump energy storage backup cooling water system described in the utility model includes a pressure stabilizing pump 1, a pressure storage tank 2, an energy storage bladder 3, a pressure gauge 4, a solenoid valve 5, a circulating water pump 6, and a circulating water pump cooler 7. Circulating water pump self-cooling pipeline 8 and check door 9;

The outlet of the pressure stabilizing pump 1 is connected with the pressure storage tank 2, and the energy storage bladder 3 is arranged in the pressure storage tank 2, and the pressure gauge 4 is installed on the pressure storage tank 2, and the outlet of the pressure storage tank 2 is connected with the inlet of the solenoid valve 5. Connection, the outlet of solenoid valve 5 is connected with circulating water pump cooler 7, the outlet of circulating water pump cooler 7 is connected with the inlet of circulating water pump self-cooling pipeline 8 through circulating water pump 6, and the outlet of circulating water pump self-cooling pipeline 8 is through backstop The door 9 is connected with the outlet pipeline of the solenoid valve 5 .

The installation position of solenoid valve 5 is very close to the circulating water pump cooler 7, so that the cooling water can quickly enter the circulating water pump cooler 7 when the solenoid valve 5 is opened.

The working process of the present utility model is:

When the circulating water pump 6 is in the stand-by state, the pressure stabilizing pump 1 is started to fill the interior of the pressure storage tank 2 with water. As the water filling volume inside the pressure storage tank 2 increases, the energy storage bladder 3 is gradually compressed. When the internal pressure reaches a certain value, the stabilizer pump 1 is stopped. When the circulating water pump 6 is started, the solenoid valve 5 is automatically opened, and the water stored in the pressure storage tank 2 immediately enters the circulating water pump cooler 7. At this time, the outlet pipe of the circulating water pump 6 Fill water and gradually increase the pressure, and then send it to the circulating water pump cooler 7 through the cooling pipe 8 through the check door 9 through the circulating water pump. When the internal pressure of the pressure storage tank 2 drops to the outlet pressure of the circulating water pump 6, the solenoid valve 5 Closed, the circulating water pump 6 realizes self-cooling through the self-cooling pipeline 8 of the circulating water pump. After the solenoid valve 5 is closed, the pressure stabilizing pump 1 starts automatically, and the stabilizing pump 1 stops working after the pressure storage tank 2 is filled with water to a preset pressure value. When the circulating water pump 6 stops in the standby state at a later stage, there is no need to run the industrial water pump for a long time to provide standby cooling water to the circulating water pump 6. Through the utility model, the cooling water can be provided at the instant when the circulating water pump 6 is started, saving energy and reducing consumption, and is safe and reliable.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible Any modification or equivalent replacement made to the specific implementation of the present utility model without departing from the spirit and scope of the present utility model shall be covered within the protection scope of the claims of the present utility model.

Claims (6)

1. A circulating water pump energy storage backup cooling water system is characterized in that it comprises a pressure storage tank (2), a solenoid valve (5), a circulating water pump cooler (7) and a circulating water pump self-cooling pipeline (8); The pressure storage tank (2) is provided with an energy storage bladder (3), the outlet of the pressure storage tank (2) is connected to the inlet of the solenoid valve (5), and the outlet of the solenoid valve (5) is connected to the circulating water pump cooler (7) The inlet of the circulating water pump cooler (7) is connected with the inlet of the circulating water pump self-cooling pipeline (8), and the outlet of the circulating water pump self-cooling pipeline (8) is connected with the outlet pipeline of the solenoid valve (5). 2. The circulating water pump energy storage backup cooling water system according to claim 1, characterized in that a pressure gauge (4) is installed on the pressure storage tank (2). 3. The circulating water pump energy storage backup cooling water system according to claim 1, characterized in that the outlet of the circulating water pump self-cooling pipeline (8) is connected to the outlet pipeline of the solenoid valve (5) through the check gate (9) . 4. The circulating water pump energy storage standby cooling water system according to claim 1, characterized in that the outlet of the circulating water pump cooler (7) communicates with the inlet of the circulating water pump self-cooling pipeline (8) through the circulating water pump (6) . 5. The circulating water pump energy storage backup cooling water system according to claim 1, characterized in that it also includes a pressure stabilizing pump (1), wherein the outlet of the stabilizing pump (1) communicates with the pressure storage tank (2) . 6. The circulating water pump energy storage backup cooling water system according to claim 5, characterized in that a control valve is arranged at the outlet of the pressure stabilizing pump (1).

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