Multi-channel cation bed sodium ion constant current system

Abstract

The utility model discloses a multichannel cation bed sodium ion constant current system, and belongs to the technical field of water treatment. Comprising a sample injection module, a pressure control module, an overflow module, a constant current module and a PID control module, the sample introduction module comprises a plurality of sample introduction channels, and the sample introduction channels are converged through an electric multi-way valve and then are connected to the sodium ion detection unit through a main channel; the pressure control module is used for adjusting the inlet pressure of the sample introduction channels and comprises a pressure sensor and a pressure reducing valve which are arranged on each sample introduction channel; the overflow module comprises an overflow valve arranged on each sample introduction channel and a reflux water collecting device connected with the overflow valve through a reflux pipeline; the constant flow module comprises a peristaltic pump and a flow meter which are arranged on the main channel; the PID control module is electrically connected with the sample injection module, the pressure control module, the overflow module and the constant current module. According to the utility model, sodium ion detection of the multi-channel cation bed can be realized, and data accuracy under different pressure environments is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a multi-channel cation bed sodium ion constant current system. Background Technology

[0002] In the water treatment process of the power industry, ion exchange resin beds (such as cation exchange beds) are the core equipment for removing impurity ions (such as sodium ions) from water. Real-time monitoring of sodium ion concentration in the effluent from the cation exchange bed is directly related to determining the resin regeneration cycle, controlling water quality compliance, and ensuring the safe operation of the unit. Traditional detection systems mostly use offline laboratory analysis or single-channel online electrode monitoring. However, with the widespread use of mobile water treatment equipment such as water treatment trucks, there is an urgent need for a technical solution that can achieve multi-channel switching and high-precision online measurement under complex operating conditions. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model aims to provide a constant current system that can realize multi-channel switching and accurately measure sodium ions under different pressure environments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multi-channel cation exchange sodium ion constant current system includes an injection module, a pressure control module, an overflow module, a constant current module, and a PID control module. The injection module includes several injection channels; in this embodiment, there are four injection channels. Each injection channel is connected to a sodium ion detection unit via a main channel after being merged by an electric multi-port valve. The pressure control module is used to regulate the inlet pressure of the injection channels and includes a pressure sensor and a pressure reducing valve installed on each injection channel. The overflow module includes an overflow valve installed on each injection channel and a return water collection device connected to the overflow valve via a return pipeline. The constant current module includes a peristaltic pump and a flow meter installed on the main channel. The PID control module is electrically connected to the injection module, the pressure control module, the overflow module, and the constant current module.

[0006] Preferably, each injection channel of the injection module is equipped with an independent filter.

[0007] Preferably, the overflow module is equipped with a check valve and a flow monitor on its return pipeline.

[0008] Preferably, the constant current module further includes a pressure relief bypass disposed on the main channel.

[0009] Preferably, the constant flow module further includes a flow regulation mechanism, which includes a regulating pipeline connected in parallel with the main channel and a flow regulation valve located on the regulating pipeline.

[0010] Preferably, it also includes an alarm module electrically connected to the PID control module.

[0011] Compared with existing technologies, this invention enables normal measurement of sodium ions in the effluent of multiple cation exchange systems through pipeline switching. A system comprising sample introduction, pressure control, overflow, and constant flow control is used to control the water in different channels, achieving constant pressure control of the water entering the sodium ion detection unit. This ensures that unstable water pressure does not interfere with sodium ion measurement in multiple channels, thus achieving accurate measurement and monitoring of sodium ions in the water. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure;

[0013] Figure 2 This is a control block diagram.

[0014] In the diagram: 1. Sample inlet channel; 101. Electric multi-way valve; 102. Pressure sensor; 103. Pressure reducing valve; 104. Overflow valve; 2. Main channel; 21. Regulating pipeline; 211. Flow regulating valve; 201. Peristaltic pump; 202. Flow meter; 3. Sodium ion detection unit; 4. Return pipeline; 401. Check valve; 402. Flow monitor; 5. Return water collection device; 6. Filter; 7. Pressure relief bypass. Detailed Implementation

[0015] The structure and principle of this utility model will now be fully explained with reference to specific embodiments, so that those skilled in the art can fully understand and implement it.

[0016] like Figure 1 , Figure 2 As shown, the multi-channel cation bed sodium ion constant current system includes an injection module, a pressure control module, an overflow module, a constant current module, and a PID control module.

[0017] The sampling module includes several sampling channels 1, which are connected to the sodium ion detection unit 3 via a main channel 2 after being merged by an electric multi-way valve 101. Each sampling channel 1 of the sampling module is equipped with an independent filter 6 to filter impurities and prevent particulate matter from clogging the pipeline. The electric multi-way valve 101 can be used to switch the sampling of effluent from different pipelines.

[0018] The pressure control module is used to regulate the inlet pressure of the sample injection channel 1, and includes a pressure sensor 102 and a pressure reducing valve 103 installed on each sample injection channel 1. The overflow module includes an overflow valve 104 installed on each sample injection channel 1 and a return water collection device 5 connected to the overflow valve 104 through a return pipe 4 for overflow discharge in case of overpressure. The return water collection device 5 can be replaced to the system inlet for recycling. In a preferred embodiment, the overflow module adopts a bipolar overflow, wherein the primary overflow is used for rapid pressure relief, and the secondary overflow is equipped with a diaphragm pressure balancer. The overflow threshold is controlled by both a mechanical spring and a solenoid valve, and the overflow is automatically diverted to the return pipe in case of overpressure.

[0019] The constant flow module includes a peristaltic pump 201 and a flow meter 202 installed on the main channel 2; the PID control module is electrically connected to the injection module, pressure control module, overflow module and constant flow module.

[0020] Preferably, the return pipe 4 of the overflow module is equipped with a check valve 401 and a flow monitor 402. The check valve 401 prevents backflow of water, and the flow monitor 402 can record the frequency of overflow events and the overflow volume for system health diagnosis.

[0021] Preferably, the constant flow module further includes a pressure relief bypass 7 disposed on the main channel 2. The constant flow module also includes a flow regulation mechanism, which includes a regulating pipe 21 connected in parallel with the main channel 2 and a flow regulating valve 211 located on the regulating pipe 21, serving as an auxiliary actuator for flow control.

[0022] Preferably, it also includes an alarm module electrically connected to the PID control module. When the flow exceeds the limit, the pipeline is blocked, or the system is abnormal, the alarm system is triggered and the system switches to a safe mode (such as shutting down the pump, opening the pressure relief or overflow bypass, etc.).

[0023] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the technical principles and scope of this utility model. Therefore, any combination, modification, or substitution made to the disclosed technical features of this utility model based on its technical essence, without departing from the principles or solution of this utility model, should fall within the protection scope of this utility model.

Claims

1. A multi-channel cation-bed sodium ion constant current system, characterized in that, The system includes an injection module, a pressure control module, an overflow module, a constant flow module, and a PID control module. The injection module includes several injection channels (1), which are connected to a sodium ion detection unit (3) via a main channel (2) after being merged by an electric multi-port valve (101). The pressure control module is used to adjust the inlet pressure of the injection channels (1) and includes a pressure sensor (102) and a pressure reducing valve (103) installed on each injection channel (1). The overflow module includes an overflow valve (104) installed on each injection channel (1) and a return water collection device (5) connected to the overflow valve (104) via a return pipeline (4). The constant flow module includes a peristaltic pump (201) and a flow meter (202) installed on the main channel (2). The PID control module is electrically connected to the injection module, the pressure control module, the overflow module, and the constant flow module.

2. The multi-channel cation bed sodium ion constant current system as described in claim 1, characterized in that, Each injection channel (1) of the injection module is equipped with an independent filter (6).

3. The multi-channel cation bed sodium ion constant current system as described in claim 2, characterized in that, The overflow module's return pipeline (4) is equipped with a check valve (401) and a flow monitor (402).

4. The multi-channel cation bed sodium ion constant current system as described in claim 3, characterized in that, The constant current module also includes a pressure relief bypass (7) installed on the main channel (2).

5. The multi-channel cation bed sodium ion constant current system as described in claim 4, characterized in that, The constant flow module also includes a flow regulation mechanism, which includes a regulating pipe (21) connected in parallel with the main channel (2) and a flow regulation valve (211) located on the regulating pipe (21).

6. The multi-channel cation bed sodium ion constant current system according to any one of claims 1 to 5, characterized in that, It also includes an alarm module that is electrically connected to the PID control module.

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