Carbon monoxide calibration detection device
By designing a device that includes carbon monoxide standard gas cylinder, carbon dioxide gas cylinder, calibration gas box and gas recovery box, the problem of carbon monoxide gas leakage during the traditional calibration process is solved, and the effect of safety improvement and efficient gas utilization is achieved.
Patent Information
- Application Number
- CN202421852172.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-01
AI Technical Summary
In the prior art, carbon monoxide sensor calibration requires the use of a large amount of carbon monoxide gas, which leads to gas leakage and poses a life and health hazard to the experimenter.
A carbon monoxide calibration and detection device is designed, including a standard carbon monoxide gas cylinder, a carbon dioxide gas cylinder, a calibration gas box and a gas recovery box, and gas saving and use and recycling are achieved through a throttling solenoid valve and a gas recovery pipeline.
It effectively avoids leakage of carbon monoxide gas, improves the safety of the calibration and detection device, and realizes efficient gas utilization through the design of the gas recovery box.
Smart Images
Figure CN222952318U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas detection and calibration, in particular to a carbon monoxide calibration detection device. Background Art
[0002] The main methods for detecting carbon monoxide gas concentration are electrochemical method, infrared absorption method or chemical method. The chemical method mainly refers to the use of carbon monoxide specific indicators or reagents to detect carbon monoxide, such as liquid chromatography or gas chromatography. This method is simple to operate, but it is not suitable for real-time detection, so it cannot be effectively used in industrial applications. Using the infrared absorption method, an infrared beam passes through the sample gas and measures the degree of absorption of infrared light by carbon monoxide to determine the concentration. This method has good accuracy and can monitor carbon monoxide concentration in real time. However, the equipment cost is high, which is not conducive to universal use. The electrochemical method for detecting carbon monoxide gas concentration is quick and easy, and is also more suitable for field use. However, electrochemical carbon monoxide sensors are easily affected by environmental humidity and temperature during use, and react with other gases, resulting in large errors in identifying carbon monoxide gas concentrations.
[0003] Generally, when a carbon monoxide sensor is used to detect carbon monoxide gas concentration in some necessary occasions, the carbon monoxide sensor needs to be calibrated regularly at intervals.
[0004] In the prior art, a large amount of carbon monoxide gas is usually required to calibrate a carbon monoxide sensor. Once the carbon monoxide gas leaks, it will cause great harm to the life and health of the experimental calibration personnel. Utility Model Content
[0005] The utility model aims to provide a carbon monoxide calibration detection device to improve the safety of the carbon monoxide calibration detection device and avoid leakage of carbon monoxide gas.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A carbon monoxide calibration detection device, comprising a carbon monoxide standard gas cylinder, a carbon dioxide gas cylinder, a calibration gas box and a gas recovery box;
[0008] The carbon monoxide standard gas cylinder is connected to a throttling solenoid valve via a pipeline;
[0009] The calibration gas box has a first input connector, a second input connector and a first exhaust connector. The first input connector is connected to the output end of the throttle solenoid valve and is used to introduce calibration gas. The second input connector is connected to the carbon dioxide gas cylinder. A carbon monoxide sensor to be calibrated is placed in the calibration gas box.
[0010] The gas recovery box has a gas recovery joint and a first gas exhaust joint; the first exhaust joint is connected to the first gas exhaust joint, and a gas recovery pipe and a reactor connected to the gas recovery joint are provided in the gas recovery box. The other end of the gas recovery pipe rises into the reactor so that the gas in the gas recovery pipe reacts chemically with the substance in the reactor to generate carbon dioxide gas. The first gas exhaust joint is used to exhaust the carbon dioxide gas in the gas recovery box.
[0011] In one embodiment, the first gas discharge connector is connected to a gas pump to fill the carbon dioxide gas into the carbon dioxide gas cylinder.
[0012] In one embodiment, it also includes a gas storage device, which includes an air bag; the first gas discharge connector is connected to the air bag to store carbon dioxide gas in the air bag, and the gas output end of the air bag is connected to the second input connector. Squeezing the air bag can pass the carbon dioxide gas in the air bag into the calibration gas box.
[0013] In one embodiment, the gas storage device further includes a collection box and a pressing handle, the air bag is placed in the collection box, and pressing the pressing handle can discharge the carbon dioxide gas in the air bag.
[0014] In one embodiment, a guide column is further provided in the collection box, and a compression spring is sleeved on the outer periphery of the guide column. The extrusion portion of the pressing handle is slidably matched with the guide column, and the end surface of the extrusion portion abuts against the compression spring.
[0015] In one embodiment, a heating device is also included, which includes a heating plate and a gas delivery pipeline wrapped around the outer circumference of the heating plate, the gas output end of the airbag is connected to the gas delivery pipeline, and the output end of the gas delivery pipeline is connected to the second input connector to allow the heated carbon dioxide gas to enter the calibration gas box.
[0016] In one embodiment, a gas drying device is further included, wherein the gas drying device is connected between the first gas exhaust connector and the air bag.
[0017] In one embodiment, it is characterized in that it further comprises a microcontroller, wherein the microcontroller is connected to the carbon monoxide sensor signal, and the microcontroller is used to calibrate the carbon monoxide gas concentration displayed by the carbon monoxide sensor.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] Before the carbon monoxide standard gas cylinder containing the standard gas concentration of carbon monoxide is passed into the calibration gas box, the air or other gas in the calibration gas box needs to be discharged through the first exhaust joint. At this time, the main gas used to discharge the air can be an inert gas such as nitrogen or carbon dioxide. After the air in the calibration gas box is discharged, the carbon dioxide gas cylinder is closed, the carbon monoxide standard gas cylinder is opened, the carbon monoxide gas of the standard concentration is passed into the calibration box, and the display device of the carbon monoxide sensor is calibrated. After the calibration of a standard concentration of carbon monoxide gas is completed, it is necessary to pass carbon dioxide gas again to ventilate the gas in the calibration gas box. At this time, the carbon monoxide gas in the calibration gas box enters the gas recovery joint of the gas recovery box through the first exhaust joint, and the gas recovery joint is connected to the gas recovery pipe, and the carbon monoxide gas is passed into the reactor, and the carbon monoxide gas is reacted to generate carbon dioxide gas. The first gas discharge joint is set in the gas recovery box to discharge the carbon dioxide gas. Therefore, the technical solution of the utility model avoids the leakage of the calibration carbon monoxide gas and improves the safety of the carbon monoxide calibration detection device. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0021] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.
[0022] Figure 1 This is a schematic diagram of the system structure of an embodiment of the carbon monoxide calibration and detection device of the utility model;
[0023] Figure 2 This is a schematic diagram of the system structure of an embodiment of the carbon monoxide calibration and detection device of the utility model;
[0024] Figure 3 This is a schematic diagram of the system structure of an embodiment of the carbon monoxide calibration and detection device of the utility model;
[0025] Figure 4 It is a structural schematic diagram of an embodiment of a partial device of the utility model;
[0026] Figure 5 This is a schematic structural diagram of an embodiment of the heating device of the utility model;
[0027] Illustrations: 100, carbon monoxide calibration detection device; 110, carbon monoxide standard gas cylinder; 111, throttling solenoid valve; 120, carbon dioxide gas cylinder; 130, calibration gas box; 140, gas recovery box; 141, gas recovery pipe; 142, reactor; 150, air pump; 160, gas storage device; 161, air bag; 162, collection box; 163, pressing handle; 164, guide column; 165, compression spring; 170, heating device; 171, heating plate; 172, gas delivery pipeline; 180, gas drying device; 200, carbon monoxide sensor. DETAILED DESCRIPTION
[0028] In order to make the technical purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.
[0030] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.
[0031] The embodiment of the utility model provides a carbon monoxide calibration detection device 100.
[0032] See also Figure 1 In one embodiment, the carbon monoxide calibration detection device 100 includes a carbon monoxide standard gas cylinder 110, a carbon dioxide gas cylinder 120, a calibration gas box 130 and a gas recovery box 140;
[0033] The carbon monoxide standard gas cylinder 110 is connected to a throttling solenoid valve 111 through a pipeline;
[0034] The calibration gas box 130 has a first input connector, a second input connector and a first exhaust connector. The first input connector is connected to the output end of the throttle solenoid valve 111 for introducing calibration gas. The second input connector is connected to the carbon dioxide gas cylinder 120. The carbon monoxide sensor 200 to be calibrated is placed in the calibration gas box 130.
[0035] The gas recovery box 140 has a gas recovery joint and a first gas exhaust joint; the first exhaust joint is connected to the first gas exhaust joint, and a gas recovery pipe 141 and a reactor 142 connected to the gas recovery joint are provided in the gas recovery box 140. The other end of the gas recovery pipe 141 rises into the reactor 142 so that the gas in the gas recovery pipe 141 reacts chemically with the substance in the reactor 142 to generate carbon dioxide gas. The first gas exhaust joint is used to exhaust the carbon dioxide gas in the gas recovery box 140.
[0036] It is understandable that, before the carbon monoxide standard gas cylinder 110 containing the carbon monoxide standard gas concentration is introduced into the calibration gas box 130, the air or other gas in the calibration gas box 130 needs to be discharged through the first exhaust joint. At this time, the main gas used to discharge the air can be an inert gas such as nitrogen or carbon dioxide. After the air in the calibration gas box 130 is discharged, the carbon dioxide gas cylinder 120 is closed, the carbon monoxide standard gas cylinder 110 is opened, the carbon monoxide gas of the standard concentration is introduced into the calibration box, and the display device of the carbon monoxide sensor 200 is calibrated. After the calibration of a carbon monoxide gas of a standard concentration is completed, the carbon dioxide gas needs to be introduced again to ventilate the gas in the calibration gas box 130. At this time, the carbon monoxide gas in the calibration gas box 130 enters the gas recovery joint of the gas recovery box 140 through the first exhaust joint, and the gas recovery joint is connected to the gas recovery pipe 141, and the carbon monoxide gas is passed into the reactor 142, and the carbon monoxide gas reacts to generate carbon dioxide gas, and the first gas exhaust joint is set in the gas recovery box 140 to exhaust the carbon dioxide gas. Therefore, the technical solution of the utility model avoids the leakage of the calibration carbon monoxide gas and improves the safety of the carbon monoxide calibration detection device 100.
[0037] It should also be noted that the chemical substances such as hydrogen peroxide and copper oxide may react with carbon monoxide gas in the reactor 142. Preferably, in order to avoid open flames and improve reaction efficiency, the reaction substance in the reactor 142 is hydrogen peroxide.
[0038] It should also be noted that the throttling solenoid valve 111 can control the on-off of the gas pipeline in an electrically controlled manner, and can control the flow rate and flow velocity of the calibration gas, thereby reducing the waste of carbon monoxide gas of standard concentration.
[0039] It should also be noted that the above-mentioned carbon monoxide sensor 200 is an electrochemical carbon monoxide sensor 200 .
[0040] See also Figure 2 In one embodiment, the first gas discharge connector is connected to the gas pump 150 to load the carbon dioxide gas into the carbon dioxide gas cylinder 120 .
[0041] It is understandable that the air pump 150 is provided to collect the carbon dioxide gas generated by the reaction and store it in a relatively high-pressure carbon dioxide gas cylinder 120 for reuse.
[0042] See also Figure 3 In a specific embodiment of the utility model, the carbon monoxide calibration detection device 100 also includes a gas storage device 160, and the gas storage device 160 includes an air bag 161; the first gas discharge connector is connected to the air bag 161 to store carbon dioxide gas in the air bag 161, and the gas output end of the air bag 161 is connected to the second input connector, and squeezing the air bag 161 can pass the carbon dioxide gas in the air bag 161 into the calibration gas box 130.
[0043] It is understandable that the economic cost of using the airbag 161 to collect the carbon dioxide gas generated by the reaction is lower and more effective, and it is more convenient to empty the gas in the airbag 161 before collecting the carbon dioxide gas, thereby easily achieving effective collection of the carbon dioxide gas.
[0044] See also Figure 4 In a specific embodiment, the gas storage device 160 further includes a collection box 162 and a pressing handle 163 , the airbag 161 is placed in the collection box 162 , and pressing the pressing handle 163 can discharge the carbon dioxide gas in the airbag 161 .
[0045] Please continue reading Figure 4 Specifically, a guide column 164 is further provided in the collection box 162 , and a compression spring 165 is sleeved on the outer periphery of the guide column 164 . The extrusion portion of the pressing handle 163 is slidably matched with the guide column 164 , and the end surface of the extrusion portion abuts against the compression spring 165 .
[0046] It is understandable that when there is gas in the airbag 161, pressing the pressing handle 163 and overcoming the tension of the compression spring 165 can discharge the gas in the airbag 161, making the airbag 161 in a deflated state. When the pressing handle 163 is released, the compression spring 165 recovers, and the pressing handle 163 is moved away from the airbag 161, so as to prevent the gravity of the pressing handle 163 from affecting the collection of gas in the airbag 161.
[0047] Please continue reading Figure 3 and Figure 5 In a specific embodiment, the carbon monoxide calibration detection device 100 also includes a heating device 170, which includes a heating plate 171 and a gas delivery pipeline 172 wrapped around the outer periphery of the heating plate 171, and the gas output end of the airbag 161 is connected to the gas delivery pipeline 172, and the output end of the gas delivery pipeline 172 is connected to the second input connector to allow the heated carbon dioxide gas to enter the calibration gas box 130.
[0048] It is understandable that the carbon dioxide gas is heated by heat conduction using the heating sheet 171, and the heating temperature of the heating sheet 171 is controllable, thereby avoiding overheating damage to the gas delivery pipeline 172. The heated carbon dioxide gas is passed into the calibration gas box 130, so as to achieve the purpose of bath heating the calibration gas box 130. So that the standard concentration of carbon monoxide gas entering later is diffused more evenly in the calibration gas box 130, thereby improving the accuracy of the calibration data.
[0049] Optionally, the heating device 170 may also be disposed between the connecting pipeline between the carbon monoxide standard gas cylinder 110 and the calibration gas box 130 , so as to directly heat the carbon monoxide gas of standard concentration.
[0050] See also Figure 3 In a preferred embodiment, the carbon monoxide calibration detection device 100 further includes a gas drying device 180, which is connected between the first gas discharge connector and the air bag 161. It is understandable that the gas drying device contains a desiccant. When the reactant in the reactor 142 is hydrogen peroxide, a portion of water vapor will inevitably be brought out while the carbon dioxide gas is generated by the reaction. The gas drying device can absorb the moisture discharged from the first gas discharge connector. It should also be noted that if the gas moisture concentration in the calibration box is high, it will affect the sensing and identification of the carbon monoxide sensor 200, thereby affecting the accuracy of the calibration data.
[0051] Furthermore, in a specific embodiment, the carbon monoxide calibration detection device 100 also includes a microcontroller, which is signal-connected to the carbon monoxide sensor 200 , and is used to calibrate the carbon monoxide gas concentration displayed by the carbon monoxide sensor 200 .
[0052] It is understandable that the microcontroller can recalibrate the sensing display device of the carbon monoxide sensor 200 to be calibrated. Specifically, when the carbon monoxide gas of the standard concentration is detected, the carbon monoxide sensor 200 can sense a certain value of carbon monoxide gas concentration data, and compare the sensed carbon monoxide gas concentration value with the concentration value of the carbon monoxide gas of the standard gas concentration used for actual calibration. If the sensed concentration value is the same as the concentration value of the calibration gas, recalibration is not required. When the sensed concentration value is different from the concentration value of the calibration gas, the display device of the carbon monoxide sensor 200 needs to be recalibrated.
[0053] Optionally, if it is necessary to calibrate the carbon monoxide gas concentrations of different standard concentrations, it is necessary to prepare a plurality of carbon monoxide standard gas cylinders 110 of different standard concentrations.
[0054] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A carbon monoxide calibration detection device, characterized in that: Including carbon monoxide standard gas cylinder, carbon dioxide gas cylinder, calibration gas box and gas recovery box; The carbon monoxide standard gas cylinder is connected to a throttling solenoid valve via a pipeline; The calibration gas box has a first input connector, a second input connector and a first exhaust connector. The first input connector is connected to the output end of the throttle solenoid valve and is used to introduce calibration gas. The second input connector is connected to the carbon dioxide gas cylinder. A carbon monoxide sensor to be calibrated is placed in the calibration gas box. The gas recovery box has a gas recovery joint and a first gas exhaust joint; the first exhaust joint is connected to the first gas exhaust joint, and a gas recovery pipe and a reactor connected to the gas recovery joint are provided in the gas recovery box. The other end of the gas recovery pipe rises into the reactor so that the gas in the gas recovery pipe reacts chemically with the substance in the reactor to generate carbon dioxide gas. The first gas exhaust joint is used to exhaust the carbon dioxide gas in the gas recovery box.
2. The carbon monoxide calibration detection device according to claim 1, characterized in that: The first gas discharge joint is connected to a gas pump to fill the carbon dioxide gas into the carbon dioxide gas cylinder.
3. The carbon monoxide calibration detection device according to claim 1, characterized in that: It also includes a gas storage device, which includes an air bag; the first gas discharge connector is connected to the air bag to store carbon dioxide gas in the air bag, the gas output end of the air bag is connected to the second input connector, and squeezing the air bag can pass the carbon dioxide gas in the air bag into the calibration gas box.
4. The carbon monoxide calibration detection device according to claim 3, characterized in that: The gas storage device also includes a collection box and a pressing handle. The air bag is placed in the collection box. Pressing the pressing handle can discharge the carbon dioxide gas in the air bag.
5. The carbon monoxide calibration detection device according to claim 4, characterized in that: A guide column is also provided in the collection box, and a compression spring is sleeved on the outer periphery of the guide column. The extrusion portion of the pressing handle is slidably matched with the guide column, and the end surface of the extrusion portion is in contact with the compression spring.
6. The carbon monoxide calibration detection device according to claim 3, characterized in that: It also includes a heating device, which includes a heating plate and a gas delivery pipeline wrapped around the outer circumference of the heating plate. The gas output end that squeezes the airbag is connected to the gas delivery pipeline, and the output end of the gas delivery pipeline is connected to the second input connector to allow the heated carbon dioxide gas to enter the calibration gas box.
7. The carbon monoxide calibration detection device according to claim 3, characterized in that: It also includes a gas drying device, which is connected between the first gas exhaust joint and the air bag.
8. The carbon monoxide calibration detection device according to any one of claims 1 to 7, characterized in that: It also includes a microcontroller, which is connected to the carbon monoxide sensor signal and is used to calibrate the carbon monoxide gas concentration displayed by the carbon monoxide sensor.