Automatic water quality treatment device for cooling system of ORC (organic Rankine cycle) equipment

Abstract

The utility model discloses an automatic water quality treatment device for a cooling system of ORC (organic Rankine cycle) equipment, which comprises at least one medicament adding module, and the medicament adding module comprises a medicament dispensing metering pump, a medicament storage tank, a liquid level meter, a stirrer, a medicament adding pump and a demineralized water switch valve; the stirring end of the stirrer extends into the medicine storage tank from top to bottom; the medicine storage tank is connected with a medicine supply pipeline, and the medicine dispensing metering pump is arranged on the medicine supply pipeline; the chemical storage tank is connected with a water tank of a cooling system of the ORC equipment through a chemical adding pipeline, and the chemical adding pump is arranged on the chemical adding pipeline; a demineralized water supply pipeline is arranged on the medicine storage tank, and the demineralized water switch valve is arranged on the demineralized water supply pipeline. The device has the advantages of automatically adding the diluting agent into the water tank of the cooling system according to the water quality detection result to improve the water quality, ensuring the performance stability of the cooling system and prolonging the service life.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to an automatic water treatment device for an ORC equipment cooling system. Background Technology

[0002] The cooling system of an Organic Rankine Cycle (ORC) waste heat power generation system typically employs evaporative condensers, cooling towers, or circulating cooling water. When the ORC is running and the cooling system is operating, the consumption of cooling water or prolonged closed-loop circulation leads to the accumulation of impurities and ions in the water. Impurities, such as calcium carbonate, accumulate on the heat exchanger surface, easily forming scale and reducing cooling efficiency. Simultaneously, the increased concentration of corrosive ions causes corrosion to the cooling system equipment, shortening its service life. Utility Model Content

[0003] The purpose of this invention is to provide an automatic water treatment device for the cooling system of ORC equipment, thereby solving the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An automatic water treatment device for an ORC equipment cooling system includes at least one reagent addition module. The reagent addition module includes a metering pump, a storage tank, a level gauge, a stirrer, a dosing pump, and a demineralized water supply valve. The stirring end of the stirrer extends downwards into the storage tank. A reagent supply pipeline is connected to the storage tank, and the metering pump is installed on the reagent supply pipeline. The storage tank is connected to the water tank of the ORC equipment cooling system via the reagent addition pipeline, and the dosing pump is installed on the reagent addition pipeline. A demineralized water supply pipeline is provided on the storage tank, and the demineralized water supply valve is installed on the demineralized water supply pipeline.

[0006] Preferably, the medicine storage tank is equipped with a level gauge.

[0007] Preferably, the automatic water treatment device further includes a water quality detection module, which includes a sampler, a sampling valve, and a water quality detection instrument. The sampler is installed in the water tank of the ORC equipment cooling system and is connected to a sampling and detection pipeline. The other end of the sampling and detection pipeline is connected to the water tank of the ORC equipment cooling system. The sampling valve and the water quality detection instrument are sequentially and spaced apart on the sampling and detection pipeline along the water flow direction inside the pipeline.

[0008] Preferably, the water quality testing module further includes a pre-filter, which is disposed on the sampling and testing pipeline between the sampler and the sampling valve.

[0009] Preferably, the water quality testing instrument includes a pH sensor and / or an ion detector and / or a turbidity meter and / or a residual chlorine detector.

[0010] Preferably, multiple samplers are arranged at intervals along both the vertical and horizontal directions in the water tank of the ORC equipment cooling system.

[0011] Preferably, the automatic water treatment device further includes a PLC module, and the dosing pump, the dosing pump, the demineralized water switch valve, the sampling valve, and the water quality testing instrument are all connected to the PLC module.

[0012] The beneficial effects of this utility model are: 1. It can automatically add chemicals in real time based on the detection values ​​of sensors and detectors, achieving automatic control. 2. It can detect the water quality of cooling water in the cooling system in real time. 3. The PLC module records and stores water quality changes in real time, facilitating the analysis of the impact of water quality on the performance of the cooling system. 4. It can automatically detect water quality and calculate the corresponding dosage based on the detection values, achieving precise control and optimal cost control. 5. It can change the water quality maintenance settings according to actual needs. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the automatic water treatment device in an embodiment of this utility model.

[0014] In the diagram: 1-Sampler; 2-Pre-filter; 3-Sampling valve; 4-pH sensor; 5-Ion detector; 6-Turbidity meter; 7-Residual chlorine detector; 8-Dosage metering pump; 9-Storage tank; 10-Level gauge; 11-Agitator; 12-Dosage pump; 13-Demineralized water switch valve; 14-PLC module. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0016] like Figure 1As shown, this embodiment provides an automatic water treatment device for an ORC equipment cooling system, including a water quality detection module, a PLC module 14, and at least one reagent addition module. The water quality detection module is used to sample and detect the water in the ORC equipment cooling system's water tank in real time. The reagent addition module is used to add reagents to the water tank to improve water quality when the water quality detection module detects an abnormality in the water. Both the water quality detection module and the reagent addition module are connected to the PLC module 14, which controls the corresponding modules to operate, thereby achieving automated water treatment. The number of reagent addition modules can be set according to actual needs, such as... Figure 1 As shown, four can be set.

[0017] In this embodiment, the reagent addition module includes a metering pump 8, a storage tank 9, a level gauge 10, a stirrer 11, a dosing pump 12, and a demineralized water switch valve 13. The stirring end of the stirrer 11 extends downward into the storage tank 9. A reagent supply pipeline is connected to the storage tank 9, and the metering pump 8 is installed on the reagent supply pipeline. The storage tank 9 is connected to the water tank of the ORC equipment cooling system via a reagent addition pipeline, and the dosing pump 12 is installed on the reagent addition pipeline. A demineralized water supply pipeline is provided on the storage tank 9, and the demineralized water switch valve 13 is installed on the demineralized water supply pipeline. A level gauge 10 is installed on the storage tank 9.

[0018] In this embodiment, the water quality testing module includes a pre-filter 2, a sampler 1, a sampling valve 3, and a water quality testing instrument. The sampler 1 is installed in the water tank of the ORC equipment cooling system and is connected to a sampling and testing pipeline. The other end of the sampling and testing pipeline is connected to the water tank of the ORC equipment cooling system. The pre-filter 2, the sampling valve 3, and the water quality testing instrument are arranged sequentially and at intervals on the sampling and testing pipeline along the water flow direction inside the sampling and testing pipeline.

[0019] Water quality testing instruments include a pH sensor 4 and / or an ion detector 5 and / or a turbidity meter 6 and / or a residual chlorine detector 7. One or more of these instruments can be selected and installed depending on the actual situation.

[0020] Multiple samplers 1 are arranged at intervals along both the vertical and horizontal directions in the water tank of the ORC equipment cooling system. The multiple samplers 1 sample the water at different locations in the water tank, realizing multi-point sampling to improve the accuracy of water quality test results.

[0021] In this embodiment, the dosing pump 8, the dosing pump 12, and the demineralized water switch valve 13 in the dosing module, as well as the sampling valve 3 and water quality testing instruments in the water quality testing module, are all connected to the PLC module 14. The PLC module 14 controls the operation of the corresponding valves and testing instruments, thereby realizing automated water quality treatment.

[0022] In this embodiment, the automatic water treatment device operates as follows: During ORC operation, multiple samplers 1 collect water samples from different locations in the cooling system's water tank. The samples are then tested by a pH sensor 4, an ion detector 5, a turbidity meter 6, and a residual chlorine detector 7, and returned to the cooling system's water tank. The sensors and detectors upload the measured values ​​to the PLC control module. When one or more indicators, such as Fe, are detected... 2+ If the concentration or pH level is too high, exceeding the water quality setting value of the PLC control module (the setting value can be set according to equipment cost or maintenance difficulty; for high-cost or difficult-to-maintain cooling systems, the setting value can be set more stringent), the corresponding dosing pump 8 will be activated to deliver the agent to the storage tank 9. The amount of agent injected is calculated by the PLC control module based on the detection value. Then, the demineralized water valve 13 is opened to inject demineralized water into the storage tank 9, diluting the agent to the usage concentration. The amount of demineralized water is controlled by the level gauge 10 on the storage tank 9. Once the required level is reached, the corresponding valve is closed. Then, the stirrer 11 is activated to dissolve the agent evenly. Subsequently, the dosing pump 12 is activated to add the diluted agent to the cooling system's water tank, improving water quality and thus ensuring the stable performance of the cooling system and extending its service life.

[0023] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0024] This invention provides an automatic water treatment device for the cooling system of ORC equipment. It can automatically add chemicals in real time based on the detection values ​​of sensors and detectors, achieving automatic control. It can monitor the water quality of the cooling water in the cooling system in real time. A PLC module records and stores water quality changes in real time, facilitating analysis of the impact of water quality on the cooling system performance. It can automatically detect water quality and calculate the corresponding dosage based on the detection values, achieving precise control and optimal cost control. The water quality maintenance settings can be changed according to actual needs.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automatic water treatment device for an ORC equipment cooling system, characterized in that: The device includes at least one reagent addition module, which comprises a metering pump, a storage tank, a level gauge, a stirrer, a dosing pump, and a demineralized water supply valve. The stirring end of the stirrer extends downward into the storage tank. A reagent supply pipeline is connected to the storage tank, and the metering pump is installed on the reagent supply pipeline. The storage tank is connected to the water tank of the ORC equipment cooling system via the reagent addition pipeline, and the dosing pump is installed on the reagent addition pipeline. A demineralized water supply pipeline is provided on the storage tank, and the demineralized water supply valve is installed on the demineralized water supply pipeline.

2. The automatic water treatment device for the ORC equipment cooling system according to claim 1, characterized in that: The medicine storage tank is equipped with a level gauge.

3. The automatic water treatment device for the ORC equipment cooling system according to claim 1, characterized in that: The automatic water treatment device also includes a water quality testing module, which includes a sampler, a sampling valve, and a water quality testing instrument. The sampler is installed in the water tank of the ORC equipment cooling system and is connected to a sampling and testing pipeline. The other end of the sampling and testing pipeline is connected to the water tank of the ORC equipment cooling system. The sampling valve and the water quality testing instrument are arranged sequentially and at intervals on the sampling and testing pipeline along the water flow direction inside the sampling and testing pipeline.

4. The automatic water treatment device for the ORC equipment cooling system according to claim 3, characterized in that: The water quality testing module also includes a pre-filter, which is installed on the sampling and testing pipeline between the sampler and the sampling valve.

5. The automatic water treatment device for the cooling system of ORC equipment according to claim 3, characterized in that: The water quality testing instruments include pH sensors and / or ion detectors and / or turbidity meters and / or residual chlorine detectors.

6. The automatic water treatment device for an ORC equipment cooling system according to claim 3, characterized in that: Multiple samplers are sequentially spaced along both the vertical and horizontal directions in the water tank of the ORC equipment cooling system.

7. The automatic water treatment device for an ORC equipment cooling system according to any one of claims 3 to 6, characterized in that: The automatic water treatment device also includes a PLC module, and the dosing pump, the dosing pump, the demineralized water switch valve, the sampling valve, and the water quality testing instrument are all connected to the PLC module.

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