CN219737362U

CN219737362U - Novel residual chlorine measurement device

Info

Publication number: CN219737362U
Application number: CN202122714794.6U
Authority: CN
Inventors: 苏宇刚; 苗永旦; 赵鑫; 樊华; 崔荣荣
Original assignee: Tengine Innovation (beijing) Instrument Inc
Current assignee: Tengine Innovation (beijing) Instrument Inc
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2023-09-22
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a novel residual chlorine measuring device which comprises a flow cell, a PH composite electrode and a residual chlorine electrode, wherein a fluid cavity is arranged at the upper part of the interior of the flow cell, an assembly cavity is arranged at the lower part of the interior of the flow cell, a drain pipe is arranged at the side end of the assembly cavity, a first water outlet pipe and a second water outlet pipe are arranged in the fluid cavity, an electrode installation pipe cavity and a flow pipe cavity are arranged in the assembly cavity, the side end of the electrode installation pipe cavity is connected with the lower end of the first water outlet pipe, the residual chlorine electrode is in sealed connection with the lower end of the electrode installation pipe cavity, the PH composite electrode is in sealed connection with the upper end of the flow pipe cavity, the side end of the electrode installation pipe cavity is connected with the flow pipe cavity, the lower end of the second water outlet pipe extends to the interior of the assembly cavity, and the lower end of the second water outlet pipe is connected with the middle section of the flow pipe cavity and the drain pipe. The advantages are that: the PH composite electrode can be used as a reference electrode for measuring PH and residual chlorine, solves the problem that the residual chlorine measurement needs to be independently provided with the reference electrode or the PH electrode is independently provided for compensation, and can reduce the purchase and maintenance cost of the instrument.

Description

Novel residual chlorine measurement device

Technical Field

The utility model relates to a technology for detecting residual chlorine in a water body, in particular to a novel residual chlorine measuring device.

Background

Residual chlorine refers to effective chlorine reserved in water after the water is subjected to chlorination and disinfection for a certain time, disinfectant is added in the water purification treatment process to deactivate harmful microorganisms in the water, and detection of the residual chlorine has very important significance and value for guaranteeing water safety.

The residual chlorine sensor based on the electrochemical detection method can meet the requirements of rapid, instant and accurate detection on water quality, and has become the main direction of a residual chlorine detection system, and the three-electrode system, namely the working electrode, the counter electrode and the reference electrode, has the characteristics of high real-time performance, high precision, good stability, simple maintenance and the like, and can be widely applied to places needing to measure the residual chlorine concentration, such as drinking water, secondary water supply, agricultural drinking water, swimming pools and the like.

Currently, two devices for detecting residual chlorine based on a three-electrode system are mainly available in the market, wherein a flow cell is used as a carrier, and each electrode is arranged in the flow cell for measurement. The main difference is that platinum or gold is used as a working electrode and a counter electrode, an independent reference electrode is used as a pH test and residual chlorine measurement compensation, the pH electrode and the reference electrode are required to be independently replaced in later maintenance, and the cost is high. And the other is to use platinum or gold as a working electrode and a counter electrode, integrate the working electrode and the counter electrode on a reference electrode for measurement, independently install a pH electrode for measuring pH and compensating for residual chlorine measurement, and replace the whole reference electrode and the pH electrode for later maintenance, so that the maintenance and purchase cost is high.

Disclosure of Invention

The utility model aims to provide a novel residual chlorine measuring device, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a novel residual chlorine measuring device, including the flow cell, PH combined electrode and residual chlorine electrode, the inside upper portion of above-mentioned flow cell is equipped with the fluid chamber, its inside lower part is equipped with the assembly chamber, the drain pipe is installed to above-mentioned assembly chamber side, the first outlet pipe and the second outlet pipe that all open in upper end are equipped with vertically in the above-mentioned fluid chamber, electrode installation tube chamber and flow lumen are equipped with to the bottom in the above-mentioned assembly chamber, the vertical through-going of above-mentioned flow cell diapire of above-mentioned electrode installation tube chamber, its side is connected and is linked together with the lower extreme of above-mentioned first outlet pipe through the pipeline, the sealed grafting of above-mentioned residual chlorine electrode is inside the above-mentioned electrode installation tube chamber lower extreme, above-mentioned flow lumen upper end extends to above-mentioned flow cell surface, the sealed grafting of above-mentioned PH combined electrode is inside the upper end of above-mentioned flow lumen, above-mentioned electrode installation tube side end is connected and is linked together with above-mentioned flow lumen, the lower extreme of above-mentioned second outlet pipe extends to above-mentioned assembly intracavity, and its lower extreme is connected and is linked together through pipeline and above-mentioned drain pipe.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, a step-shaped notch is arranged at a position of the upper part of the flow cell corresponding to the side of the fluid cavity, the flow tube cavity is arranged at a position of the assembly cavity corresponding to the step-shaped notch, and the upper end of the flow tube cavity penetrates through the bottom surface of the step-shaped notch.

Further, a PH adaptor is mounted on the bottom surface of the step-shaped notch and is connected with the upper end of the flow tube cavity in a sealing way, and the PH composite electrode sealing device is inserted into the PH adaptor in a sealing way.

Further, a branch pipeline is arranged at the lower part of the drain pipe close to the second water outlet pipe, vertically penetrates through the bottom wall of the flow cell, and is provided with a temperature sensor in a sealing mode.

Further, the residual chlorine electrode comprises a base, a working electrode vertically assembled at the upper end of the base and a counter electrode embedded at the end part of the upper end of the base, an electrode cleaning rotor is rotatably arranged outside the working electrode, the lower end of the electrode cleaning rotor is in contact with the counter electrode, a liquid inlet which is in tangential communication with the inner cavity of the electrode cleaning rotor is arranged at the position of the side end of the electrode installation pipe cavity corresponding to the electrode cleaning rotor, the liquid inlet is connected and communicated with the lower end of the first water outlet pipe through the pipeline, liquid outlets which are distributed at intervals are arranged at the side end of the electrode installation pipe cavity, and the liquid outlet is connected and communicated with the flowing pipe cavity.

Further, a flow regulating valve connected and communicated with the flow tube cavity is arranged at the side end of the flow cell.

Further, the height of the upper end pipe orifice of the second water outlet pipe is higher than that of the upper end pipe orifice of the first water outlet pipe.

Further, the top of the fluid chamber is opened and is provided with a cover plate.

Further, at least one water inlet opening communicated with the inner cavity of the first water outlet pipe is formed at the position, close to the pipe orifice, of the upper end side of the first water outlet pipe, and an exhaust port is formed at the upper end of the electrode mounting pipe cavity in an extending mode.

The beneficial effects of the utility model are as follows: the PH composite electrode is used as the reference electrode, and the PH composite electrode can be used as the reference electrode for measuring PH and residual chlorine, so that the problem that the residual chlorine measurement needs to be independently provided with the reference electrode or the PH electrode is independently provided for compensation is solved, and the purchase and maintenance cost of the instrument can be reduced; the device can effectively release bubbles in the measured liquid, can ensure that the measured liquid in the reaction tank is exchanged stably, and realizes real-time accurate measurement.

Drawings

FIG. 1 is a schematic structural diagram of a novel residual chlorine measuring device of the utility model;

FIG. 2 is a schematic structural view of the internal piping arrangement of the novel residual chlorine measuring device of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a flow cell; 2. a PH composite electrode; 3. residual chlorine electrodes; 4. a first water outlet pipe; 5. a second water outlet pipe; 6. an electrode mounting tube cavity; 7. a flow lumen; 8. a drain pipe; 9. a PH adaptor; 10. a temperature sensor; 11. a fluid chamber; 31. cleaning a rotor by an electrode; 71. a flow regulating valve; 81. a branch pipeline; 111. and a cover plate.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Examples: as shown in fig. 1 and 2, the novel residual chlorine measuring device of this embodiment includes a flow cell 1, a PH composite electrode 2 and a residual chlorine electrode 3, wherein a fluid chamber 11 is provided at an upper portion of an inside of the flow cell 1, an assembly chamber is provided at a lower portion of an inside of the flow cell 1, a drain pipe 8 is installed at a side end of the assembly chamber, a first water outlet pipe 4 and a second water outlet pipe 5 each having an opened upper end are vertically installed in the fluid chamber 11, an electrode installation chamber 6 and a flow pipe chamber 7 are provided at an inner bottom of the assembly chamber, the electrode installation chamber 6 vertically penetrates through a bottom wall of the flow cell 1, a side end thereof is connected and communicated with a lower end of the first water outlet pipe 4 through a pipe, the residual chlorine electrode 3 is inserted and sealed inside a lower end of the electrode installation chamber 6, an upper end of the flow pipe chamber 7 extends to an outer surface of the flow cell 1, the PH composite electrode 2 is inserted and sealed inside an upper end of the flow pipe chamber 7, a side end of the electrode installation chamber 6 is connected and communicated with the flow pipe 7, and a lower end of the second water outlet pipe 5 is inserted and connected to an upper end of the flow pipe chamber 7 through a pipe 8 through the pipe.

The measurement process is as follows:

the water enters the fluid cavity 11 firstly, and the water body is divided into two paths of water to flow out along with the continuous rising of the liquid level in the fluid cavity 11, and the first path of water enters the second water outlet pipe 5 and is discharged through the lower end of the second water outlet pipe 5 and the water outlet pipe 8; the second route is got into by the upper end mouth of pipe of first outlet pipe 4, then flow through electrode installation lumen 6, then flow through flow lumen 7, and get into second outlet pipe 5, with first water confluence, finally flow out flow cell 1, guaranteed the stability of whole cavity (pipeline) inside water velocity of flow like this, simultaneously, the device adopts PH combined electrode 2 as the reference electrode (PH combined electrode is 2 can survey PH and the reference electrode that the residual chlorine measured), this just solves the residual chlorine measurement and need install the reference electrode alone or install the PH electrode alone and compensate the problem, can reduce instrument purchase and maintenance cost.

What needs to be stated is: after the residual chlorine electrode 3 is inserted upwards from the bottom wall of the flow cell 1 into the lower end of the electrode installation tube 6, the residual chlorine electrode is fixed by a set screw (denoted by a in the figure and also can be a fastener in other forms) arranged on the side wall of the flow cell 1.

In this embodiment, the residual chlorine electrode 3 is sealed by an O-ring when being placed in the flow cell 1, and the side set screw is limited, so that the electrode can be detached without any tool.

In a preferred embodiment, a stepped notch is provided at a portion of the upper portion of the flow cell 1 corresponding to a side of the fluid chamber 11, the flow tube chamber 7 is provided at a position corresponding to the stepped notch in the assembly chamber, and an upper end of the flow tube chamber passes through a bottom surface of the stepped notch.

In this embodiment, the arrangement of the step-shaped notch facilitates the good assembly of the flow lumen 7 and the PH composite electrode 2, and the space design is more reasonable.

In a preferred embodiment, a PH adaptor 9 is mounted on the bottom surface of the stepped recess and is sealed to the upper end of the flow lumen 7, and the PH composite electrode 2 is sealed in the PH adaptor 9 and is inserted into the upper end of the flow lumen 7 in a sealed manner.

In the scheme, the PH adapter 9 is favorable for the stable assembly of the PH composite electrode 2 at the pipe orifice at the upper end of the flow pipe cavity 7, the tightness of the joint is better, and the PH composite electrode 2 is simple and convenient to assemble.

In a preferred embodiment, a branch pipe 81 is provided at a lower portion of the drain pipe 8 near the second water outlet pipe 5, and the branch pipe 81 penetrates the bottom wall of the flow cell 1 vertically and is hermetically provided with a temperature sensor 10.

In this embodiment, the temperature sensor 10 is designed to measure a temperature parameter of the body of water, which can be used to compensate for the effect of residual chlorine measurement, thereby improving the accuracy of the measurement results.

As a preferred embodiment, the residual chlorine electrode 3 includes a base, a working electrode vertically assembled at an upper end of the base, and a counter electrode fitted at an upper end of the base, an electrode cleaning rotor 31 is rotatably installed outside the working electrode, a lower end of the electrode cleaning rotor 31 contacts with the counter electrode, a liquid inlet tangentially communicating with an inner cavity of the electrode cleaning rotor 31 is provided at a portion of a side end of the electrode installation tube 6 corresponding to the electrode cleaning rotor 31, the liquid inlet is connected and communicated with a lower end of the first water outlet pipe 4 through the pipeline, a liquid outlet spaced apart from the liquid inlet is provided at a side end of the electrode installation tube 6, and the liquid outlet is connected and communicated with the flow tube 7.

In this embodiment, increase electrode cleaning rotor 31, because the water is tangent line entering when getting into electrode installation lumen 6, consequently, form the vortex at electrode installation lumen 6, can impel this electrode cleaning rotor 31 rotatory, in the rotatory process, electrode cleaning rotor 31 rotates and all realizes the friction to working electrode and counter electrode for the electrode is used for a long time and is not contaminated, and, can stir the interior water of electrode installation lumen 6 in the rotatory in-process, make water and residual chlorine electrode 3 abundant even contact reaction, the accuracy of residual chlorine measurement has been improved in whole design, increase customer maintenance cycle, the residual chlorine measured value is more accurate.

In the above embodiment, the liquid inlet and the liquid outlet may be designed in a vertical direction, which is more beneficial to the flow of water.

In a preferred embodiment, a flow rate control valve 71 is provided at the side end of the flow cell 1, which is connected to and communicates with the fluid chamber 11.

In this embodiment, the design of the flow regulating valve 71 can regulate the inflow velocity and flow rate of the fluid chamber 11 and the flow velocity and flow rate of the outflow water, so as to ensure the relative balance of inflow and outflow water, so that the flow rate (decrease) of the second water outlet pipe 5 can be properly regulated on the premise of ensuring the stable inflow water flow rate in the first water outlet pipe 4 (i.e. ensuring the stable action on the electrode cleaning rotor in the first water outlet pipe 4), thereby realizing the saving of the flow velocity and flow rate of the water body in the regulating device on the premise of not affecting the detection accuracy and sensitivity, and having a lower requirement on the flow rate of the whole machine of about 300-400 ml/min, and saving water.

As a preferred embodiment, the upper end nozzle height of the second water outlet pipe 5 is higher than the upper end nozzle height of the first water outlet pipe 4.

In an embodiment, the height difference design between the second water outlet pipe 5 and the first water outlet pipe 4 can ensure that the liquid level in the fluid cavity 11 is stable, the water flow of the first water outlet pipe 4 can drive the electrode cleaning rotor 31 to rotate by means of water gravity, the electrode cleaning rotor 31 has a certain weight, the electrode cleaning rotor polishes the electrode by means of rotor gravity while rotating, and the working electrode is polished by means of contact between rotor rotation and the working electrode. The electrode can be ensured not to be polluted by impurities in water during long-time measurement, the surface of the electrode is kept clean, the maintenance period is prolonged, and the electrode is beneficial to measurement stability.

In this embodiment, the top of the fluid chamber 11 is opened, and a cover 111 is provided to facilitate cleaning and water injection inside the fluid chamber 11.

As a preferred embodiment, at least one water inlet opening communicating with the inner cavity of the first water outlet pipe 4 is formed at a position near the pipe orifice on the side of the upper end of the first water outlet pipe, and an air outlet is formed at the upper end of the electrode mounting pipe cavity 6 in an extending manner.

In this embodiment, when water in the flow cell 1 enters the first water outlet pipe 4, the water can enter from the water inlet opening lower than the pipe orifice of the first water outlet pipe 4, then enters from the pipe orifice of the first water outlet pipe 4, and when the water enters from the water inlet opening, the water cannot completely fill the first water outlet pipe 4 at once, therefore, after the water enters from the water inlet opening, the air bubbles in the liquid overflow from the pipe orifice at the upper end of the first water outlet pipe 4, so as to effectively reduce the water bubbles in the water body, meanwhile, the upper exhaust port of the electrode mounting pipe cavity 6 can also exhaust, when the liquid level in the electrode mounting pipe cavity 6 rises, the air in the electrode mounting pipe cavity 6 can be extruded into the flowing pipe cavity 7 through the exhaust port, and the air in the electrode mounting pipe cavity 6 cannot be exhausted to form the air bubbles, so that the measurement is influenced.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. Novel residual chlorine measurement device is characterized in that: including flow cell (1), PH combined electrode (2) and residual chlorine electrode (3), the inside upper portion of flow cell (1) is equipped with fluid chamber (11), and its inside lower part is equipped with the assembly chamber, drain pipe (8) are installed to assembly chamber side, vertical first outlet pipe (4) and second outlet pipe (5) that are equipped with the upper end all uncovered in fluid chamber (11), be equipped with electrode installation tube chamber (6) and flow lumen (7) in the assembly chamber, electrode installation tube chamber (6) vertically run through flow cell (1) diapire, its side end through the pipeline with the lower extreme of first outlet pipe (4) is connected and is linked together, residual chlorine electrode (3) are sealed to be pegged graft inside electrode installation tube chamber (6) lower extreme, flow lumen (7) upper end extends to flow cell (1) surface, PH combined electrode (2) are sealed to be pegged graft inside the upper end of flow lumen (7), electrode installation tube chamber (6) side end with flow lumen (7) and flow lumen (7) are connected and are connected to drain pipe (8) and are connected to the lower end through the pipe (7) and are connected to the drain pipe inside (8).

2. The novel residual chlorine measuring device according to claim 1, wherein: the upper part of the flow cell (1) is provided with a step-shaped notch corresponding to the lateral part of the fluid cavity (11), the flow tube cavity (7) is arranged at the position corresponding to the step-shaped notch in the assembly cavity, and the upper end of the flow tube cavity passes through the bottom surface of the step-shaped notch.

3. The novel residual chlorine measuring device according to claim 2, wherein: the bottom surface of the step-shaped notch is provided with a PH adapter (9) which is in sealing connection with the upper end of the flow lumen (7), and the PH composite electrode (2) sealing device is arranged in the PH adapter (9) and is inserted into the upper end of the flow lumen (7) in a sealing way.

4. The novel residual chlorine measuring device according to claim 1, wherein: the lower part of the drain pipe (8) close to the second water outlet pipe (5) is provided with a branch pipeline (81), and the branch pipeline (81) vertically penetrates through the bottom wall of the flow cell (1) and is provided with a temperature sensor (10) in a sealing mode.

5. A novel residual chlorine measuring device according to any of claims 1 to 4, characterized in that: the residual chlorine electrode (3) comprises a base body, a working electrode vertically assembled at the upper end of the base body and a counter electrode embedded at the end part of the upper end of the base body, an electrode cleaning rotor (31) is rotatably arranged outside the working electrode, the lower end of the electrode cleaning rotor (31) is in contact with the counter electrode, a liquid inlet which is in tangential communication with the inner cavity of the electrode cleaning rotor (31) is arranged at the side end of the electrode installation tube cavity (6) corresponding to the position of the electrode cleaning rotor (31), the liquid inlet is connected and communicated with the lower end of the first water outlet pipe (4) through a pipeline, a liquid outlet which is distributed at intervals is arranged at the side end of the electrode installation tube cavity (6), and the liquid outlet is connected and communicated with the flow tube cavity (7).

6. The novel residual chlorine measuring device according to claim 5, wherein: the side end of the flow cell (1) is provided with a flow regulating valve (71) which is connected and communicated with the fluid cavity (11).

7. The novel residual chlorine measuring device according to claim 5, wherein: the upper end pipe orifice of the second water outlet pipe (5) is higher than the upper end pipe orifice of the first water outlet pipe (4).

8. A novel residual chlorine measuring device according to any of claims 1 to 4, characterized in that: the top of the fluid cavity (11) is open and is provided with a cover plate (111).

9. A novel residual chlorine measuring device according to any of claims 1 to 4, characterized in that: at least one water inlet opening communicated with the inner cavity of the first water outlet pipe (4) is formed in the position, close to the pipe orifice, of the upper end side of the first water outlet pipe, and an exhaust port is formed in the upper end of the electrode mounting pipe cavity (6) in an extending mode.