Correction equipment for hydrogen peroxide probe

Abstract

The utility model relates to the field of instrument correction equipment, and discloses hydrogen peroxide probe correction equipment, an isolation cabin comprises a cabin chamber and a cabin door, a placing plate for placing a hydrogen peroxide probe is fixed on the cabin door, the placing plate is arranged in the cabin chamber in a sliding manner, and a plurality of detection positions are arranged on the placing plate; the detection position comprises a hydrogen peroxide concentration standard device placing hole and a plurality of calibrated instrument placing holes, and the circle where the axes of the calibrated instrument placing holes are located and the circle where the hydrogen peroxide concentration standard device placing hole are located share the same geometric center. The plurality of detection positions are arranged on the placement plate, and the calibrated instrument placement holes and the hydrogen peroxide concentration standard device placement holes of each detection position are distributed at equal intervals, so that the distances between all calibrated probes and the standard device are equal, the calibration conditions of the probes are consistent, the reliability of the calibration result is improved, the calibration operation is simplified, and the calibration efficiency is improved. The requirement for the correction environment is lowered, multiple probes can be corrected at the same time, and the correction efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of instrument calibration equipment, in particular to hydrogen peroxide probe calibration equipment. Background Art

[0002] Hydrogen peroxide (H2O2) is a strong oxidant widely used in the disinfection, medical, chemical, and food industries. Accurately monitoring its concentration is crucial for ensuring product quality and production safety. Currently, commercially available hydrogen peroxide probes can experience reading drift after prolonged use due to sensor aging or contamination, failing to accurately reflect the true concentration of hydrogen peroxide in the monitored solution. To restore the probe's measurement accuracy, it must be regularly calibrated. Traditional calibration methods typically utilize a hydrogen peroxide detector standard device, which primarily consists of a vapor-phase hydrogen peroxide generator, an isolation chamber, and a hydrogen peroxide concentration standard. The hydrogen peroxide concentration standard and the instrument being calibrated are placed in the isolation chamber, and the chamber door is closed. By setting the hydrogen peroxide solution addition rate, the vapor-phase hydrogen peroxide generator converts the hydrogen peroxide solution into a gaseous state and feeds it into the isolation chamber until the vapor-phase hydrogen peroxide concentration inside the chamber reaches a stable state. The probe is calibrated by comparing the difference in the two readings. However, since the probe and concentration standard need to be placed in the same sealed cabin during the calibration process, and the two are required to be at the same level and as close as possible, this limits the number of probes calibrated each time and reduces the calibration efficiency. Utility Model Content

[0003] The utility model aims to provide a hydrogen peroxide probe calibration device to increase the number of probes calibrated in a single time and improve the calibration efficiency.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: hydrogen peroxide probe calibration equipment, the isolation cabin includes a cabin and a cabin door, a placement plate for placing the hydrogen peroxide probe is fixed on the cabin door, the placement plate is slidably arranged in the cabin, and a plurality of detection positions are provided on the placement plate, the detection positions include a hydrogen peroxide concentration standard placement hole and a plurality of calibrated instrument placement holes, and the circle where the axis of the calibrated instrument placement hole is located and the circle where the hydrogen peroxide concentration standard placement hole is located share the same geometric center.

[0005] The beneficial effects of this solution are as follows: by setting up several detection positions on the placement plate, and maintaining equidistant distribution between the placement hole of the calibrated instrument and the placement hole of the hydrogen peroxide concentration standard at each detection position, it is ensured that the distances between all calibrated probes and the standard are equal, so that the calibration conditions of each probe are consistent, and the reliability of the calibration results is improved. This not only simplifies the calibration operation and reduces the requirements for the calibration environment, but also enables the simultaneous calibration of multiple probes, greatly improving the calibration efficiency.

[0006] Furthermore, the cabin is provided with an air inlet and an air outlet, the air inlet is provided above the placement plate, and the air outlet is provided below the placement plate. The gas-phase hydrogen peroxide generator includes a vent pipe, which is connected to the air inlet, and the placement plate is also provided with an air vent.

[0007] Beneficial effects: 1. Through the reasonable layout of air inlet and outlet holes and the design of the vent holes on the placement plate, the utility model ensures the uniform distribution of gaseous hydrogen peroxide in the cabin, avoids the situation where the local concentration is too high or too low, and improves the accuracy and consistency of calibration; 2. The uniform gas distribution reduces the error caused by gas concentration fluctuations during the calibration process, making it possible to calibrate multiple hydrogen peroxide probes at the same time, further improving the calibration efficiency; 3. The scientific arrangement of the air inlet and outlet holes simplifies the equipment operation process, eliminates the need for additional gas distribution devices, reduces the complexity of operation, and makes the equipment easier to use and maintain.

[0008] Furthermore, the cabin door is integrated with several input and output components, which include a cabin door input port and a cabin door output port that are interconnected. The cabin door input port is arranged on the inside of the cabin door and is connected to a hydrogen peroxide concentration standard or a calibrated instrument, and the cabin door output port is arranged on the outside of the cabin door.

[0009] Beneficial effects: 1. The design of the cabin door input port and the cabin door output port avoids the damage to the airtightness caused by frequent opening of the cabin door, ensures the stability of the gaseous hydrogen peroxide concentration in the cabin, and provides an ideal closed environment for the calibration process; 2. The external operator can access the instrument through the cabin door output port without opening the cabin door, which simplifies the operation process, improves work efficiency, and also reduces the potential contamination risk caused by frequent opening and closing of the cabin door; 3. The cabin door input port ensures the normal power supply and signal transmission of the instrument in the closed cabin, avoids the influence of the external environment on the working state of the instrument, and improves the accuracy and reliability of the calibration results; 4. The closed cabin environment combined with the design of the cabin door input port and the cabin door output port effectively isolates external interference, reduces the risk of hydrogen peroxide leakage, and enhances the safety performance of the equipment.

[0010] Furthermore, the gas-phase hydrogen peroxide generator further comprises a feed inlet, and a circulation pipe is connected between the feed inlet and the gas outlet.

[0011] Beneficial effects: 1. Through the setting of the circulation pipe, unreacted hydrogen peroxide gas can be recovered and participate in the reaction again, which greatly improves the utilization rate of hydrogen peroxide raw materials, reduces waste, and also reduces operating costs; 2. The circulation system ensures the continuous circulation of gas between the cabin and the generator, which helps to maintain the stability of the hydrogen peroxide concentration in the cabin, avoids the impact of concentration fluctuations on the correction process, and thus improves the reaction efficiency and the accuracy of the correction results; 3. The use of the circulation pipeline reduces the disorderly emission of hydrogen peroxide gas, reduces the potential pollution to the environment, and conforms to the concept of green and sustainable development; 4. The closed-loop circulation system reduces dependence on the external environment, simplifies the operating process, improves the independence of the equipment and the convenience of operation, reduces the complexity of operation and manpower requirements, and at the same time, by recycling hydrogen peroxide gas, reduces the accumulation of excess gas and reduces the pressure in the cabin, thereby improving the safety of equipment operation and reducing potential safety hazards.

[0012] Furthermore, it also includes a condensation unit, which includes a condensation tube. The condensation tube surrounds the circulation tube, and condensate flows in the condensation tube. The flow direction of the condensate is opposite to the flow direction of hydrogen peroxide in the circulation tube.

[0013] Beneficial Effects: 1. The countercurrent heat exchange design ensures full contact between the condensate and the superheated hydrogen peroxide gas, effectively improving heat exchange efficiency and ensuring rapid cooling of the hydrogen peroxide gas during circulation. 2. The cooling effect of the condenser tube condenses the atomized hydrogen peroxide gas back into a liquid state, which not only facilitates gas recycling but also reduces concentration fluctuations within the chamber, ensuring a stable calibration environment.

[0014] Furthermore, it also includes a detection system, which includes a controller, a display unit and a printer. The controller includes a controller input port, an arithmetic unit, a storage and a controller output port. The storage has a built-in calculation formula. The hatch output port is connected to the controller input port, and the controller output port is connected to the display unit and the printer.

[0015] Beneficial effects: 1. The built-in inspection program can automatically receive, process and analyze calibration data, reducing the errors and time consumption of manual data processing, and significantly improving work efficiency; 2. The storage setting can not only save historical calibration data, but also facilitate subsequent data query and analysis, providing data support for equipment maintenance and calibration parameter optimization; 3. Through number correspondence, the detection system can directly output calibration results in batches. Whether displayed on the screen or printed out, it greatly improves the speed and accuracy of data output, making it easier for operators to quickly obtain calibration information; 4. The integration of the display unit enables operators to intuitively view the calibration process and results, improves the transparency and convenience of operations, and lowers the operating threshold; 5. The connection of the printer allows users to print out the calibration report directly, which is convenient for archiving and sharing, ensuring physical backup of data, and meeting compliance and traceability requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of one perspective of an embodiment of the present utility model;

[0017] Figure 2 A three-dimensional diagram of another perspective of an embodiment of the present invention;

[0018] Figure 3 This is a connection diagram of the detection system of Example 2 of the present utility model. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The figure marks in the drawings of the specification include: cabin 11, air outlet 111, sealing ring 112, cabin door 13, placement plate 12, detection position 121, standard device placement hole 1211, calibrated device placement hole 1212, vent 122, cabin door input port 141, cabin door output port 142, clamp 151, fastener 152, ultrasonic atomizer 21, ventilation pipe 22, feed pipe 211, circulation pipe 23, liquid outlet 231, condensation unit 31, condensate inlet 312, condensate outlet 311.

[0021] Example 1

[0022] Example 1 is basically as shown in the attached Figure 1-2 As shown, Figure 1-2 The hydrogen peroxide probe calibration device shown includes an isolation cabin, a hydrogen peroxide concentration standard and a gaseous hydrogen peroxide generator. The isolation cabin includes a door 13, a placement plate 12 and a cabin 11. A buckle is provided between the door 13 and the cabin 11. The buckle includes a clamp 151 and a fastener 152. Figure 1As shown, the front end of the clamp 151 is rotatably set on the outer wall of the cabin 11, and a ring part is rotatably set on the front of the clamp 151. The fasteners 152 are welded on both sides of the cabin door 13. When closed, the fasteners 152 are fastened by the ring part, and then the cabin door 13 and the cabin 11 are tightened to complete the sealing work of the cabin door 13.

[0023] like Figure 1 、 Figure 2 As shown, nine groups of input and output components are bolted to the hatch 13, each group of input and output components includes a hydrogen peroxide concentration standard input and output component and eight calibrated instrument input and output components, the input and output components include a hatch input port 141 and a hatch output port 142 that are interconnected, the hatch input port 141 is arranged on the inside of the hatch 13 and is connected to the hydrogen peroxide concentration standard or the calibrated instrument, the hatch output port 142 is arranged on the outside of the hatch 13, and the placement plate 12 is welded to the inside of the hatch 13.

[0024] like Figure 2 As shown, the placement plate 12 is provided with nine groups of detection positions 121 and four ventilation holes 122. Each group of detection positions 121 includes a hydrogen peroxide concentration standard placement hole 1211 and eight calibrated device placement holes 1212. The circle where the axis of the calibrated device placement holes 1212 lies and the circle where the hydrogen peroxide concentration standard placement holes 1211 lie share the same geometric center, so that the distance between the calibrated instrument and the hydrogen peroxide concentration standard is equal, thereby reducing detection errors.

[0025] A sealing ring 112 is bonded to the outer edge of the opening of the cabin 11, and a slide groove, an air inlet and an air outlet 111 are provided on the inside of the cabin 11. The air inlet is provided above the slide groove, and the air outlet 111 is provided below the slide groove. The placement plate 12 is slidably provided in the slide groove. When closed, the buckle tightens the cabin door 13 and the cabin 11, so that the cabin door 13 squeezes the sealing ring 112 to complete the sealing work of the cabin door 13.

[0026] The gas phase hydrogen peroxide generator includes an ultrasonic atomizer 21, a circulation pipe 23 and a condensation unit 31. Figure 1 As shown, the ultrasonic atomizer 21 includes a feed pipe 211 and a vent pipe 22, the vent pipe 22 is connected to the air inlet, and the circulation pipe 23 includes a vertical section and an inclined section. The vertical section is connected to the air outlet 111, and the inclined section extends upward to the top of the isolation cabin. A liquid outlet 231 is provided at the lowest position of the inclined section, and a hose is connected between the liquid outlet 231 and the feed pipe 211. The gaseous hydrogen peroxide generator can select the ultrasonic atomizer 21 disclosed in Chinese Patent Publication No.: CN1087834C, which uses ultrasonic waves to convert the hydrogen peroxide solution into mist to form gaseous hydrogen peroxide. The gaseous hydrogen peroxide enters the isolation cabin through the vent pipe 22 and overflows through the circulation pipe 23.

[0027] The condensing unit 31 includes a condenser tube, which includes a condensate inlet 312 and a condensate outlet 311. The condenser tube surrounds the inclined section of the circulation tube 23, and the condensate inlet 312 is arranged on one side of the outlet 231, thereby ensuring that the flow direction of the condensate in the condenser tube is opposite to the flow direction of the hydrogen peroxide in the inclined section, ensuring that the hydrogen peroxide gas can be quickly cooled during the circulation process.

[0028] During use, first, the hydrogen peroxide concentration standard and the instrument to be calibrated are placed on the detection position 121, ensuring that the hydrogen peroxide concentration standard and the instrument to be calibrated are at the same horizontal height, and the cabin door 13 is closed; then, the hydrogen peroxide solution addition rate is set, and the ultrasonic atomizer 21 vaporizes the hydrogen peroxide solution into gaseous hydrogen peroxide and sends it into the isolation cabin. The gaseous hydrogen peroxide circulates between the gaseous hydrogen peroxide generator and the isolation cabin. Finally, the gaseous hydrogen peroxide concentration in the isolation cabin reaches a stable state, and calibration begins.

[0029] Select three concentration values near 20%, 50%, and 80% of the measurement range as calibration points. The specific steps are as follows:

[0030] a) Turn on the hydrogen peroxide concentration standard and the instrument to be calibrated.

[0031] b) Place the hydrogen peroxide concentration standard and the instrument to be calibrated on the detection position 121 in the isolation cabin, and connect the hydrogen peroxide concentration standard and the instrument to be calibrated to the cabin door input port 141 respectively, close the cabin door 13 by snapping, and complete the sealing work of the isolation cabin.

[0032] c) Setting the rate of addition of hydrogen peroxide solution in the ultrasonic atomizer 21 to generate gaseous hydrogen peroxide.

[0033] d) The hydrogen peroxide concentration standard monitors the gaseous hydrogen peroxide concentration in the isolation cabin in real time. After the indication stabilizes, record the indication of the hydrogen peroxide concentration standard Csi and the indication of the calibrated instrument Cmi. Record one set of data at an interval of 1 minute, and record a total of 6 sets (i = 1, 2, 3, 4, 5, 6). Take the average value of the indication error of the 6 sets of data as the indication error near the point. The calculation formula is: Record the indication of the hydrogen peroxide concentration standard Csi and the indication of the calibrated instrument Cmi. Record one set of data at an interval of 1 minute, and record a total of 6 sets (i = 1, 2, 3, 4, 5, 6). Take the average value of the indication error of the 6 sets of data as the indication error near the point. The calculation formula is:

[0034]

[0035]

[0036] Where ΔCri is the indication error; Cmi is the measurement indication of the calibrated instrument for the i-th measurement; Csi is the indication of the hydrogen peroxide concentration standard for the i-th measurement; is the mean error of the measured concentration.

[0037] e) The calibration of the instrument to be calibrated is achieved through the average error value.

[0038] Example 2

[0039] On the basis of Example 1, Example 2 further includes a detection system, which includes a controller, a display unit and a printer. The controller is a programmable logic controller (PLC) including a controller input port, an arithmetic unit, a storage unit and a controller output port. The connection method of the controller is as follows: Figure 3 As shown, the storage has built-in calculation formulas and output templates, the hatch output port 142 is connected to the controller input port, and the controller output port is connected to the display unit and the printer.

[0040] When in use, connect the hatch output port 142 to the controller input port, and the data measured by the hydrogen peroxide concentration standard and the calibrated instrument are directly transmitted to the controller.

[0041] When recording the hydrogen peroxide concentration standard value CSI and the calibrated instrument value CMI, the hydrogen peroxide concentration standard value CSI and the calibrated instrument value CMI are synchronously recorded in the memory. After obtaining six sets of hydrogen peroxide concentration standard value Csi and calibrated instrument value Cmi data, the calculation unit calls the calculation formula built into the memory to directly calculate And it is displayed on the display unit according to the output template. When necessary, the test results can be printed and filed through a printer. The above is only an embodiment of the present invention, and common knowledge such as the specific technical solutions and / or characteristics known in the solution are not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the present invention can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, several variations and improvements can be made without departing from the technical solution of the present invention. These should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Hydrogen peroxide probe calibration equipment, characterized by: The isolation cabin includes a cabin and a cabin door. A placement plate for placing a hydrogen peroxide probe is fixed on the cabin door. The placement plate is slidably arranged in the cabin. A number of detection positions are arranged on the placement plate. The detection positions include a placement hole for a hydrogen peroxide concentration standard and a number of placement holes for calibrated instruments. The circle where the axis of the placement hole of the calibrated instrument is located and the circle where the hole for the hydrogen peroxide concentration standard is located share the same geometric center.

2. The hydrogen peroxide probe calibration device according to claim 1, characterized in that: The cabin is provided with an air inlet and an air outlet. The air inlet is arranged above the placement plate, and the air outlet is arranged below the placement plate. The gas phase hydrogen peroxide generator includes a vent pipe, which is connected to the air inlet. The placement plate is also provided with an air vent.

3. The hydrogen peroxide probe calibration device according to claim 2, characterized in that: Several input and output components are integrated on the cabin door, which include a cabin input port and a cabin output port that are interconnected. The cabin input port is arranged on the inside of the cabin door and is connected to a hydrogen peroxide concentration standard or a calibrated instrument, and the cabin output port is arranged on the outside of the cabin door.

4. The hydrogen peroxide probe calibration device according to claim 3, characterized in that: The gas phase hydrogen peroxide generator further comprises a feed inlet, and a circulation pipe is connected between the feed inlet and the gas outlet.

5. The hydrogen peroxide probe calibration device according to claim 4, characterized in that: It also includes a condensation unit, which includes a condensation tube. The condensation tube surrounds the circulation tube, and condensate flows in the condensation tube. The flow direction of the condensate is opposite to the flow direction of hydrogen peroxide in the circulation tube.

6. The hydrogen peroxide probe calibration device according to claim 5, characterized in that: It also includes a detection system, which includes a controller, a display unit and a printer. The controller includes a controller input port, an arithmetic unit, a storage and a controller output port. The storage has a built-in calculation formula. The hatch output port is connected to the controller input port, and the controller output port is connected to the display unit and the printer.

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