CN221301425U - Nuclear energy heating constant pressure water supply control system - Google Patents

Abstract

The utility model provides a nuclear heating constant-pressure water supply control system, which comprises a pool, a sodium ion exchanger, a main pipeline, a water supplementing pipeline, a pressure stabilizing pipeline and a water return pipeline, wherein a water outlet of the sodium ion exchanger is connected with a softening water tank through a pipeline; the water outlet of the main pipeline is connected with the water inlet of the sodium ion exchanger, and the water inlet of the main pipeline is connected with the water outlet pipeline; the water supplementing pipeline is connected with a water outlet of the water tank and a water inlet end of the water outlet pipeline, and is connected with a raw water supplementing pump, a water supplementing check valve and a water supplementing valve; the pressure stabilizing pipeline is connected with a water outlet and a water outlet pipeline of the water tank, and is connected with a pressure stabilizing pump and a pressure stabilizing check valve; the water return pipeline is connected between the water outlet end of the pressure stabilizing pipeline and the water return port of the water tank, and is connected with a water return check valve and a regulating valve. The utility model solves the problem that the raw water pump for supplementing water supplies water to the small pipe network and is frequently started and stopped by a single user, prolongs the service life of equipment and saves the power consumption of factories.

Description

Nuclear energy heating constant pressure water supply control system

Technical Field

The utility model relates to the technical field of nuclear heating, in particular to a nuclear heating constant-pressure water supply control system.

Background

At present, the cold town heating multipurpose coal in north China is used as fuel, the energy consumption required by the town winter heating is higher and higher, and serious pollution is brought to the environment. Clean energy heating becomes the most important and main task in the low-carbon environment-friendly target, nuclear energy is utilized efficiently, and pushing nuclear energy heating is an important way for reducing the dependence of heating on coal and realizing zero-carbon heating.

In the running process of nuclear heating, the pipe network can leak to different degrees along with the increase of running time, and water needs to be periodically supplemented to the pipe network. The nuclear energy heat supply project arranges a heat supply network water supplementing system at the first station to supplement water to the heat supply network periodically. The water supply source utilizes the water from the running water plant built in the plant, supplies water to the sodium ion exchanger through a water supply raw water pump (variable frequency pump), enters the softened water tank after being treated by the sodium ion exchanger, and then supplies water to the heat supply network through the water supply raw water pump.

The prior art adopts the mode control pump of the soft water tank liquid level of moisturizing raw water pump interlocking generally to open and stop, because moisturizing raw water pump is far away from soft water tank position, needs to lay longer cable, and the construction work volume is big, and is with high costs, and cable laying is longer, can have the error through liquid level control, can influence the accuracy of control. If the constant pressure mode is adopted to control the starting and stopping of the water supplementing raw water pump, because the pipe network is small, only water is intermittently supplied to a single user of the sodium ion exchanger (when the heat supply network does not need water supplementing, the sodium ion exchanger does not need water production), and the water supplementing raw water pump can be frequently started and stopped due to the fact that a valve at the downstream of the water supplementing raw water pump is not tightly sealed, internal leakage and the like.

When the softening water tank is full of liquid level, through step sequence control, the water inlet pneumatic valve of the water inlet of the sodium ion exchanger can be automatically closed, meanwhile, because the pipe network pressure exceeds the set pressure, the operation of the water supplementing raw water pump can be interlocked, and meanwhile, the water hammer problem of the pipe network can be possibly caused.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a nuclear heating constant-pressure water supply control system, which aims to solve the problem that a raw water supplementing pump supplies water to a small pipe network and a single user frequently starts and stops.

The embodiment of the utility model provides a nuclear heating constant-pressure water supply control system, which comprises: the water tank is provided with a water return port and a plurality of water outlets; the sodium ion exchanger is provided with a water inlet and a water outlet, and the water outlet of the sodium ion exchanger is connected with the softening water tank through a pipeline; the main pipeline is provided with a water inlet and a water outlet, the water outlet of the main pipeline is connected with the water inlet of the sodium ion exchanger, the water inlet of the main pipeline is connected with a water outlet pipeline, and the water outlet pipeline is connected with a flowmeter and a pressure gauge; the water supplementing pipeline is connected with a water outlet of the water tank and a water inlet end of the water outlet pipeline, and is connected with a raw water supplementing pump, a water supplementing check valve and a water supplementing valve; the pressure stabilizing pipeline is connected with a water outlet and a water outlet pipeline of the water tank, and is connected with a pressure stabilizing pump and a pressure stabilizing check valve; the water return pipeline is connected between the water outlet end of the pressure stabilizing pipeline and the water return port of the water tank, and is connected with a water return check valve and a regulating valve.

The utility model solves the problem that the raw water pump for supplementing water supplies water to the small pipe network and a single user to frequently start and stop by arranging the pressure stabilizing pump and the water return pipeline, prolongs the service life of equipment and saves station service electricity.

In some embodiments, a water inlet of the sodium ion exchanger is connected with a water inlet pneumatic valve, and a cylinder of the water inlet pneumatic valve is connected with a retarder. Through setting up the delay ware, can solve sodium ion exchanger and stop the operation suddenly, the problem of water hammer takes place for the pipe network.

In some embodiments, the water supplementing pipelines are provided with three water supplementing pipelines, namely a first water supplementing pipeline, a second water supplementing pipeline and a third water supplementing pipeline, the first water supplementing pipeline is connected with a first water supplementing raw water pump, a first water supplementing check valve and a first water supplementing electric valve, the second water supplementing pipeline is connected with a second water supplementing raw water pump, a second water supplementing check valve and a second water supplementing electric valve, and the third water supplementing pipeline is connected with a third water supplementing raw water pump, a third water supplementing check valve and a third water supplementing electric valve.

In some embodiments, the pressure stabilizing pipelines are provided with two pressure stabilizing pipelines, namely a first pressure stabilizing pipeline and a second pressure stabilizing pipeline, the first pressure stabilizing pipeline is connected with the first pressure stabilizing pump and the first pressure stabilizing check valve, and the second pressure stabilizing pipeline is connected with the second pressure stabilizing pump and the second pressure stabilizing check valve. By arranging two pressure stabilizing pipelines, one can realize one by one.

In some embodiments, the water outlet end of the pressure stabilizing pipeline is connected to a position between the water inlet end of the water outlet pipeline and the flow meter, and the flow meter is positioned between the pressure meter and the water outlet end of the pressure stabilizing pipeline.

In some embodiments, the two water outlet pipelines are respectively a first water outlet pipeline and a second water outlet pipeline, the first water outlet pipeline is connected with the first flowmeter and the first pressure gauge, the second water outlet pipeline is connected with the second flowmeter and the second pressure gauge, and the water outlet end of the pressure stabilizing pipeline is connected with the first water outlet pipeline or the second water outlet pipeline.

In some embodiments, the water outlet pipeline is connected with a butterfly valve, and the water outlet end of the pressure stabilizing pipeline is positioned between the butterfly valve and the flowmeter. The butterfly valve can be used for isolating the water outlet pipeline when the water outlet pipeline is overhauled.

In some embodiments, a water make-up shut-off valve is connected to the water make-up line. The water supplementing stop valve is arranged to isolate the water supplementing pipeline when the water supplementing pipeline is overhauled.

In some embodiments, each pressure stabilizing pipeline is connected with two pressure stabilizing stop valves, namely a front pressure stabilizing stop valve and a rear pressure stabilizing stop valve, and the pressure stabilizing pipeline is sequentially connected with the front pressure stabilizing stop valve, the pressure stabilizing pump, the pressure stabilizing check valve and the rear pressure stabilizing stop valve from upstream to downstream. The pressure stabilizing stop valve can be used for isolating the pressure stabilizing pipeline when the pressure stabilizing pipeline is overhauled.

In some embodiments, a liquid level sensor is arranged in the water tank, and the liquid level sensor is electrically connected with the raw water pump for supplementing water. The opening and closing of the raw water pump for supplementing water can be controlled by monitoring the liquid level of the water tank.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and may be better understood from the following description of embodiments with reference to the accompanying drawings,

Wherein:

FIG. 1 is a schematic diagram of a nuclear heating constant pressure water supply control system in an embodiment of the present utility model;

reference numerals:

1-a pool; 2A-a first raw water supplementing pump; 2B-a second raw water supplementing pump; 2C-a third raw water supplementing pump; 3A-a first pressure stabilizing pump; 3B-a second pressure stabilizing pump; a 4-sodium ion exchanger; 5-softening the water tank; 6A-a first water supplementing stop valve; 6B-a second water supplementing stop valve; 6C-a third water supplementing stop valve; 7A-a first water replenishment check valve; 7B-a second water replenishment check valve; 7C-a third water replenishment check valve; 8A-a first water supplementing electric valve; 8B-a second water supplementing electric valve; 8C-a third water supplementing electric valve; 9A-a first front pressure stabilizing stop valve; 9B-a second front pressure stabilizing stop valve; 10A-a first pressure stabilizing check valve; 10B-a second pressure stabilizing check valve; 11A-a first post-pressure stabilizing stop valve; 11B-a second post-pressure stabilizing stop valve; 12-an upper butterfly valve; 13-a total water outlet pipe; 14-a first shut-off valve; 15-a second shut-off valve; 16-a regulating valve; 17-a backwater check valve; 18-split piping; 19-a lower butterfly valve; 20-summarizing pipelines; 21-a water return line; 22-a first water outlet line; 23-a second water outlet pipeline; 24A-a first butterfly valve; 24B-a second butterfly valve; 25A-a first flow meter; 25B-a second flowmeter; 26A-a first pressure gauge; 26B-a second pressure gauge; 27-a main line; 28-water supplementing pump.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The following describes a nuclear heating constant pressure water supply control system according to an embodiment of the present utility model with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present utility model provides a nuclear heating constant pressure water supply control system, including: the water tank 1, the sodium ion exchanger 4, the main pipeline 27, the water supplementing pipeline, the pressure stabilizing pipeline and the water return pipeline 21, wherein the water tank 1 is provided with a water return port and a plurality of water outlets; the sodium ion exchanger 4 is provided with a water inlet and a water outlet, and the water outlet of the sodium ion exchanger 4 is connected with the softened water tank 5 through a pipeline; the main pipeline 27 is provided with a water inlet and a water outlet, the water outlet of the main pipeline 27 is connected with the water inlet of the sodium ion exchanger 4, the water inlet of the main pipeline 27 is connected with a water outlet pipeline, and the water outlet pipeline is connected with a flowmeter and a pressure gauge; the water supplementing pipeline is connected with a water outlet of the water tank 1 and a water inlet end of the water outlet pipeline, and is connected with a raw water supplementing pump, a water supplementing check valve and a water supplementing valve; the pressure stabilizing pipeline is connected with a water outlet and a water outlet pipeline of the pool 1, and is connected with a pressure stabilizing pump and a pressure stabilizing check valve; the water return pipeline 21 is connected between the water outlet end of the pressure stabilizing pipeline and the water return port of the pool 1, and the water return pipeline 21 is connected with a water return check valve 17 and a regulating valve 16.

The utility model solves the difficult problems that the raw water pump for supplementing water causes low-efficiency operation or frequent start and stop when the water supply system is in a low-flow or zero-flow working condition when the water is intermittently supplied to a small pipe network and a single user by arranging the pressure stabilizing pump and the water return pipeline 21. And meanwhile, a constant pressure control mode of starting and stopping the raw water pump for supplementing water is optimized, and the pressure of a pipe network is maintained. It should be noted that, under the condition that the valve seal is strict or the pipe network is not leaked, the starting and stopping of the pump are not problematic through constant pressure control, but if the valve seal is not strict, a small amount of leakage occurs, the pipe network pressure drops, the raw water pump for water supplementing can be started and stopped frequently, the service life of the pump can be influenced, and a large amount of power consumption for factories can be consumed. For this purpose, a pressure stabilizing pump and a water return line 21 are added to maintain the pressure of the pipe network. When the valve is not tightly sealed, and the pressure of the pipe network is reduced, the pressure of the pipe network can be maintained by starting the pressure stabilizing pump, and the pressure stabilizing pump is smaller, so that less station power is used, and meanwhile, the water return pipeline 21 is arranged to return water to the water tank 1, so that the problem of overheat of a pump motor is not caused.

Further, the electric valve, the pressure stabilizing pump, the flowmeter and the pressure gauge are all electrically connected to the control unit, the flowmeter and the pressure gauge transmit data to the control unit, and the control unit sends instructions for opening or closing the electric valve and the pressure stabilizing pump after data analysis and processing.

Further, the control of the opening and closing of the pressure stabilizing pump can be realized by an electric switch of the pressure stabilizing pump or an electric valve additionally arranged on the pressure stabilizing pipeline.

Further, a water supplementing pump 28 is connected to the connecting pipeline between the softening water tank 5 and the water supplementing point of the heat supply network.

In some embodiments, a water inlet pneumatic valve is connected to the water inlet of the sodium ion exchanger 4, and a retarder is connected to the cylinder of the water inlet pneumatic valve. By arranging the retarder, the problem that the sodium ion exchanger 4 suddenly stops running and a pipe network generates water hammer can be solved.

Specifically, the delay device adjusts the opening and closing time of the water inlet pneumatic valve from 1s to 20s. After the valve opening and closing time is adjusted to 20s, the maximum water hammer pressure is about 0.28MPa, so that the problem of pipeline water hammer caused by the fact that the sodium ion exchanger 4 is stopped can be effectively avoided. The cylinder to which the retarder is connected is a time delay cylinder, which is not shown in the figure because the water inlet air valve, the time delay cylinder, etc. are all internal components of the sodium ion exchanger 4.

In some embodiments, three water supplementing pipelines are provided, namely a first water supplementing pipeline, a second water supplementing pipeline and a third water supplementing pipeline, wherein the first water supplementing pipeline is connected with the first water supplementing raw water pump 2A, the first water supplementing check valve 7A and the first water supplementing electric valve 8A, the second water supplementing pipeline is connected with the second water supplementing raw water pump 2B, the second water supplementing check valve 7B and the second water supplementing electric valve 8B, and the third water supplementing pipeline is connected with the third water supplementing raw water pump 2C, the third water supplementing check valve 7C and the third water supplementing electric valve 8C.

In some embodiments, two pressure stabilizing pipelines are provided, namely a first pressure stabilizing pipeline and a second pressure stabilizing pipeline, the first pressure stabilizing pipeline is connected with the first pressure stabilizing pump 3A and the first pressure stabilizing check valve 10A, and the second pressure stabilizing pipeline is connected with the second pressure stabilizing pump 3B and the second pressure stabilizing check valve 10B. By arranging two pressure stabilizing pipelines, one can realize one by one.

In some embodiments, the water outlet end of the pressure stabilizing line is connected to a position on the water outlet line between the water inlet end and the flow meter, the flow meter being located between the pressure gauge and the water outlet end of the pressure stabilizing line.

In some embodiments, two water outlet pipelines are provided, namely a first water outlet pipeline 22 and a second water outlet pipeline 23, the first water outlet pipeline 22 is connected with a first flowmeter 25A and a first pressure gauge 26A, the second water outlet pipeline 23 is connected with a second flowmeter 25B and a second pressure gauge 26B, and the water outlet end of the pressure stabilizing pipeline is connected to the first water outlet pipeline 22 or the second water outlet pipeline 23.

In this embodiment, the water outlet end of the pressure stabilizing pipe is connected to the first water outlet pipe 22.

In some embodiments, a butterfly valve is connected to the water outlet line, and the water outlet end of the pressure stabilizing line is located between the butterfly valve and the flow meter. The butterfly valve can be used for isolating the water outlet pipeline when the water outlet pipeline is overhauled.

Further, a first butterfly valve 24A is connected to the first water outlet line 22, and a second butterfly valve 24B is connected to the second water outlet line 23.

In some embodiments, a make-up shut-off valve is connected to the make-up line. The water supplementing stop valve is arranged to isolate the water supplementing pipeline when the water supplementing pipeline is overhauled.

Further, the water supplementing pipeline is sequentially connected with a water supplementing stop valve, a raw water supplementing pump, a water supplementing check valve and a water supplementing valve from top to bottom.

Further, the water replenishing stop valve comprises a first water replenishing stop valve 6A, a second water replenishing stop valve 6B and a third water replenishing stop valve 6C, the first water replenishing pipeline is sequentially connected with the first water replenishing stop valve 6A, the first water replenishing raw water pump 2A, the first water replenishing check valve 7A and the first water replenishing electric valve 8A from top to bottom, the second water replenishing stop valve 6B, the second water replenishing raw water pump 2B, the second water replenishing check valve 7B and the second water replenishing electric valve 8B from top to bottom, and the third water replenishing pipeline is sequentially connected with the third water replenishing stop valve 6C, the third water replenishing raw water pump 2C, the third water replenishing check valve 7C and the third water replenishing electric valve 8C from top to bottom.

Further, the water outlet ends of the first water supplementing pipeline, the second water supplementing pipeline and the third water supplementing pipeline are connected with a summarizing pipeline 20 together, the water inlet ends of the first water outlet pipeline 22 and the second water outlet pipeline 23 are connected to the summarizing pipeline 20, the summarizing pipeline 20 is connected with a lower butterfly valve 19, and the water inlet ends of the first water outlet pipeline 22 and the second water outlet pipeline 23 are respectively located on two sides of the lower butterfly valve 19. The lower butterfly valve 19 may be normally open.

In some embodiments, two voltage-stabilizing stop valves are connected to each voltage-stabilizing pipeline, namely a front voltage-stabilizing stop valve and a rear voltage-stabilizing stop valve, and the front voltage-stabilizing stop valve, the voltage-stabilizing pump, the voltage-stabilizing check valve and the rear voltage-stabilizing stop valve are sequentially connected to the voltage-stabilizing pipeline from upstream to downstream. The pressure stabilizing stop valve can be used for isolating the pressure stabilizing pipeline when the pressure stabilizing pipeline is overhauled.

Further, the first pressure stabilizing pipeline is sequentially connected with a first front pressure stabilizing stop valve 9A, a first pressure stabilizing pump 3A, a first pressure stabilizing check valve 10A and a first rear pressure stabilizing stop valve 11A from top to bottom, and the second pressure stabilizing pipeline is sequentially connected with a second front pressure stabilizing stop valve 9B, a second pressure stabilizing pump 3B, a second pressure stabilizing check valve 10B and a second rear pressure stabilizing stop valve 11B from top to bottom.

Furthermore, two water outlets of the water tank 1 are arranged, a total water outlet pipe 13 is connected between the two water outlets, an upper butterfly valve 12 is connected to the total water outlet pipe 13, and the upper butterfly valve 12 can be in a normally open or normally closed state. A shunt pipeline 18 is connected in parallel below the total water outlet pipe 13, a first stop valve 14 and a second stop valve 15 are connected to the shunt pipeline 18, the first stop valve 14 and the second stop valve 15 are in a normally open state, and the shunt pipeline is selectively closed when the pipeline is required to be maintained. The first and second pressure-stabilizing lines are connected at a position between the first and second shut-off valves 14 and 15. The tail ends of the first pressure stabilizing pipeline and the second pressure stabilizing pipeline are combined to form a total pressure stabilizing pipeline, only one water return pipeline 21 is arranged, and the water inlet end of the water return pipeline 21 is connected to the total pressure stabilizing pipeline. And only one of the two pressure stabilizing lines has a water outlet connected to the first water outlet line 22. The water inlet ends of the first water supplementing pipeline, the second water supplementing pipeline and the third water supplementing pipeline are all connected to the diversion pipeline 18, the first water supplementing pipeline is connected to the left side of the first stop valve 14, the second water supplementing pipeline and the third water supplementing pipeline are all connected to the right side of the second stop valve 15, and water flowing down from the pool 1 is diverted in the diversion pipeline 18.

In some embodiments, a liquid level sensor is arranged in the water tank 1, and the liquid level sensor is electrically connected with the raw water pump for supplementing water. The on-off of the raw water pump can be controlled by monitoring the liquid level of the pool 1.

When in use, after the water discharged from the pool 1 of the water works is pressurized by three variable-frequency water supplementing raw water pumps, water is supplied to the downstream sodium ion exchanger 4, after being treated by the sodium ion exchanger 4, the produced softened water enters the softened water tank 5, and water is supplemented to a water supplementing point of a heat supply network through the water supplementing pump 28.

In heating season, the raw water pump for supplementing water is operated in variable frequency, and the optimized interlocking mode is as follows:

1. The water supplementing raw water pump operates in a variable frequency mode, constant pressure of a water outlet pipeline is maintained to be 0.5MPa, and when the sum of the indication number of a first flowmeter 25A of a first water outlet pipeline 22 and the indication number of a second flowmeter 25B of a second water outlet pipeline 23 is reduced to 10m ³/h, an electric valve of the water supplementing raw water pump which operates is closed in an interlocking mode after time delay for 60 seconds; after the valve closing command is sent for 10 seconds, the running water supplementing raw water pump is stopped, and when the last water supplementing raw water pump stops running, the pressure stabilizing pump is started in an interlocking mode. After the pressure stabilizing pump is started, water flowing into the pressure stabilizing pipeline from the water tank 1 flows back into the water tank 1 through the water return pipeline 21 after flowing through the pressure stabilizing pump. When the raw water pump for water supply is stopped, the water in the main pipe 27 and the water outlet pipe is in a stationary state, and the water pressure is higher than the water pressure at the upstream side, so that the water in the pressure stabilizing pipe does not flow in the direction of the sodium ion exchanger 4 at the same time during the backflow, and can only flow back to the direction of the pool 1.

2. When the average value of the indication of the first pressure gauge 26A of the first water outlet pipeline 22 and the indication of the second pressure gauge 26B of the second water outlet pipeline 23 is reduced to 0.4MPa, the sum of the indication of the first flow gauge 25A of the first water outlet pipeline 22 and the indication of the second flow gauge 25B of the second water outlet pipeline 23 is increased to 15m ³/h, and the first raw water pump for supplementing water is put into operation in an interlocking manner; or when the average value of the indication of the first pressure gauge 26A of the first water outlet pipeline 22 and the indication of the second pressure gauge 26B of the second water outlet pipeline 23 is reduced to 0.25MPa, the first raw water supplementing pump is put into operation in an interlocking mode; and after the first water supplementing raw water pump is put into operation, all the stabilized pumps are stopped in an interlocking way.

3. When the frequency of the first raw water pump rises to 50Hz and the average value of the indication of the first pressure gauge 26A of the first water outlet pipeline 22 and the indication of the second pressure gauge 26B of the second water outlet pipeline 23 is lower than 0.5MPa, the second raw water pump is put into operation in an interlocking mode.

4. When the frequency of the second raw water pump rises to 50Hz and the average value of the indication of the first pressure gauge 26A of the first water outlet pipeline 22 and the indication of the second pressure gauge 26B of the second water outlet pipeline 23 is lower than 0.5MPa, the third raw water pump is put into operation in an interlocking way.

5. The PLC automatically selects the water supplementing raw water pump with the least starting times as the water supplementing raw water pump started by the first water supplementing raw water pump, sequentially and automatically selects the water supplementing raw water pump with the second least starting times as the second water supplementing raw water pump, and automatically selects the water supplementing raw water pump with the third least starting times as the third water supplementing raw water pump. If a certain water supplementing raw water pump in the sequential starting process fails and cannot be started, sequential supplementing is performed.

6. When each raw water supplementing pump is put into operation, the electric valve on the water supplementing pipeline is opened in an interlocking way by time delay of 10 s.

7. When the liquid level of the pool 1 is reduced to 1.35 meters, all the raw water pumps for supplementing water are automatically stopped.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be 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 to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A nuclear heating constant pressure water supply control system, comprising:

The water tank is provided with a water return port and a plurality of water outlets;

The sodium ion exchanger is provided with a water inlet and a water outlet, and the water outlet of the sodium ion exchanger is connected with the softening water tank through a pipeline;

The main pipeline is provided with a water inlet and a water outlet, the water outlet of the main pipeline is connected with the water inlet of the sodium ion exchanger, the water inlet of the main pipeline is connected with a water outlet pipeline, and the water outlet pipeline is connected with a flowmeter and a pressure gauge;

The water supplementing pipeline is connected with the water outlet of the water tank and the water inlet end of the water outlet pipeline, and is connected with a raw water supplementing pump, a water supplementing check valve and a water supplementing electric valve;

the pressure stabilizing pipeline is connected with the water outlet of the water tank and the water outlet pipeline, and is connected with a pressure stabilizing pump and a pressure stabilizing check valve;

The water return pipeline is connected between the water outlet end of the pressure stabilizing pipeline and the water return port of the water tank, and the water return pipeline is connected with a water return check valve and a regulating valve.

2. The nuclear heating constant pressure water supply control system according to claim 1, wherein a water inlet of the sodium ion exchanger is connected with a water inlet pneumatic valve, and a cylinder of the water inlet pneumatic valve is connected with a retarder.

3. The nuclear heating constant pressure water supply control system according to claim 1, wherein three water supplementing pipelines are provided, namely a first water supplementing pipeline, a second water supplementing pipeline and a third water supplementing pipeline, the first water supplementing pipeline is connected with a first water supplementing raw water pump, a first water supplementing check valve and a first water supplementing electric valve, the second water supplementing pipeline is connected with a second water supplementing raw water pump, a second water supplementing check valve and a second water supplementing electric valve, and the third water supplementing pipeline is connected with a third water supplementing raw water pump, a third water supplementing check valve and a third water supplementing electric valve.

4. A nuclear heating constant pressure water supply control system according to any one of claims 1 to 3, wherein two pressure stabilizing pipelines are provided, namely a first pressure stabilizing pipeline and a second pressure stabilizing pipeline, the first pressure stabilizing pipeline is connected with a first pressure stabilizing pump and a first pressure stabilizing check valve, and the second pressure stabilizing pipeline is connected with a second pressure stabilizing pump and a second pressure stabilizing check valve.

5. The nuclear heating constant pressure water supply control system according to claim 4, wherein the water outlet end of the pressure stabilizing pipeline is connected to a position between the water inlet end of the water outlet pipeline and the flow meter, and the flow meter is located between the pressure gauge and the water outlet end of the pressure stabilizing pipeline.

6. The nuclear heating constant pressure water supply control system according to claim 5, wherein two water outlet pipelines are provided, namely a first water outlet pipeline and a second water outlet pipeline, the first water outlet pipeline is connected with a first flowmeter and a first pressure gauge, the second water outlet pipeline is connected with a second flowmeter and a second pressure gauge, and the water outlet end of the pressure stabilizing pipeline is connected with the first water outlet pipeline or the second water outlet pipeline.

7. The nuclear heating constant pressure water supply control system according to claim 5, wherein a butterfly valve is connected to the water outlet pipeline, and the water outlet end of the pressure stabilizing pipeline is located between the butterfly valve and the flowmeter.

8. The nuclear heating constant pressure water supply control system according to claim 1, wherein a water replenishing stop valve is connected to the water replenishing pipeline.

9. The nuclear heating constant pressure water supply control system according to claim 4, wherein two pressure stabilizing stop valves are connected to each pressure stabilizing pipeline, and are respectively a front pressure stabilizing stop valve and a rear pressure stabilizing stop valve, and the pressure stabilizing pipeline is sequentially connected with the front pressure stabilizing stop valve, the pressure stabilizing pump, the pressure stabilizing check valve and the rear pressure stabilizing stop valve from upstream to downstream.

10. The nuclear heating constant pressure water supply control system according to claim 1, wherein a liquid level sensor is arranged in the water tank, and the liquid level sensor is electrically connected with the raw water supplementing pump.