CN211553920U - Gas concentration test system calibrating device - Google Patents
Gas concentration test system calibrating device Download PDFInfo
- Publication number
- CN211553920U CN211553920U CN201922359719.5U CN201922359719U CN211553920U CN 211553920 U CN211553920 U CN 211553920U CN 201922359719 U CN201922359719 U CN 201922359719U CN 211553920 U CN211553920 U CN 211553920U
- Authority
- CN
- China
- Prior art keywords
- hose
- standard
- air bag
- test system
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the test field relates to a gas concentration test system calibrating device. The device comprises a hose, a valve, a standard volume air bag, a pressurizing pump, a T-shaped flow divider, a flow meter, a temperature sensor, a pressure sensor and a controller.
Description
Technical Field
The invention belongs to the field of testing, and relates to a gas concentration testing system calibration device.
Background
The gas concentration test system is a key test device for measuring gas concentration, and the device is used as an important device and must be periodically calibrated. The apparatus mainly comprises: the concentration testing device comprises a concentration testing unit, a computer acquisition system, a power supply system and a calibration device, wherein the computer acquisition system is generally used as an important core component and plays a core control role in the whole device.
In order to ensure accurate and reliable measurement value, the equipment needs to be calibrated before use, and due to the structural particularity, the flow sensor, the temperature sensor and the like can be calibrated independently, but the flow sensor, the temperature sensor and the like are difficult to reset after being disassembled, so that each separated part cannot be disassembled to carry out metering calibration, and the whole metering calibration of the equipment is needed.
The metering equipment selects the standard gas cylinder as a gas source, and can provide a measuring standard for the equipment. The gas source is directly from a vacuum cylinder. Because other output valves and interfaces of the steel cylinder cannot be directly connected, the prior art mainly adopts a simple connection mode at present, uses a medical oxygen bag as a buffer component to reduce the flow speed and flow, and the specific components are shown in figure 1.
Generally, the calibration process has a high requirement on environmental conditions, and generally, in the field calibration process, environmental condition monitoring equipment is absent due to the specificity of a test site, so that the environmental conditions of the process are absent. Secondly, all parameters of the calibration gas source are not controlled, so that the standard source is not well known in the calibration result, and the final calibration result does not meet the corresponding metering requirement.
Disclosure of Invention
The purpose of the invention is as follows: the calibration device for the gas concentration test system is provided, and the problems that environmental condition monitoring equipment is lacked and all parameters of a calibration gas source are controlled are solved.
The invention provides a gas concentration test system calibration device, which comprises a hose, a valve, a standard volume air bag, a pressurizing pump, a T-shaped flow divider, a flow meter, a temperature sensor, a pressure sensor and a controller, wherein the hose is connected with the pressure sensor;
the standard air source is communicated with the standard air bag through a first hose, and a standard air source valve is arranged on the first hose; the standard-volume air bag is communicated with the inlet end of the T-shaped diverter through a second hose, and a diverter valve is arranged on the second hose; a temperature sensor and a pressure sensor are arranged in the standard volume air bag; the standard volume air bag is used for storing gas input by the first hose or the second hose; a plurality of output ends of the T-shaped flow divider are communicated with a gas concentration testing system calibration device through hoses, and each hose is provided with a high-precision flowmeter; the controller collects and displays the collection quantity of the temperature sensor and the high-precision flowmeter; the atmosphere is communicated with the standard air bag through a third hose, and a pressurizing pump is arranged on the third hose and used for pumping air with pressure higher than atmospheric pressure into the standard volume air bag; an air valve is also arranged on the third hose.
Further, the method also comprises the following steps: clamping a hoop;
the clamp is used to connect the hose to other components of the gas concentration test system calibration apparatus.
Furthermore, the outer side of the standard volume air bag is provided with air holes connected with the hose, and the air holes are distributed on two sides of the air bag.
Further, the standard volume bladder is a thermoplastic bladder.
Further, the valve has an opening state and a closing state, and when the valve is opened, the devices at the two ends can be communicated.
Furthermore, the valve is a one-way manual valve or a one-way electromagnetic valve, and the controller controls the opening or closing of each electromagnetic valve according to the instruction of a user.
Furthermore, the temperature sensor and the pressure sensor are fixed on the inner wall of the air bag, the technical index of the temperature sensor is superior to 0.1 ℃, the technical index of the pressure sensor is 0.1%, and the temperature sensor and the pressure sensor can select a wired or wireless data transmission mode.
Further, the controller is an MSP430 single chip microcomputer.
Furthermore, the flowmeter is a high-precision flowmeter, the technical index of the high-precision flowmeter is superior to 0.1SLM, and the high-precision flowmeter selects a wired or wireless data transmission mode.
The invention has the advantages that: the temperature, the pressure and the flow rate of the standard gas in the calibration process can be detected, so that the standard gas is in a standard state in use, and the standard substance is ensured to reach corresponding accuracy; through the combined control of the one-way valves, the influence of the concentration of the standard gas in use is prevented, and the reliability of calibration is ensured; the use of the controller realizes an automatic control mode, improves the control efficiency and improves the control effect.
Drawings
Fig. 1 is a schematic structural view of a medical oxygen bag as a buffer member.
FIG. 2 is a schematic diagram of a calibration apparatus of a gas concentration test system connected by wire;
30-standard volume air bag; 80-hose and connector; 50-T-shaped shunt, 70-console, high-precision temperature sensor; 60-high-precision flow meter, 90-pressure sensor, 100-pressurizing pump, 11-air valve, 13-closing diverter valve and 12-standard air source valve.
Fig. 3 is a schematic structural diagram of a calibration apparatus of a wirelessly connected gas concentration test system.
Detailed Description
Best embodiment 1: the gas concentration test system calibration device is introduced by taking fire extinguishing agent gas as an example, and the gas concentration test system calibration device is collectively called a fire extinguishing agent concentration test system.
The fire extinguishing agent concentration test system is a key test device for fire extinguishing tests, and the device is used as an important device and must be periodically calibrated. As shown in fig. 2, the apparatus mainly comprises: the concentration testing device comprises four parts, namely a concentration testing unit, a computer acquisition system, a power supply system and a calibration device. In order to realize constant temperature treatment of the gas at 121 ℃ and reduce heat loss, the equipment comprises a gas preheating device and a laminar flow pipe heating device.
In calibration, the ambient temperature should be controlled at 20 ℃. + -. 2 ℃ and the flow indication should be 5 SLM. + -. 0.1 SLM.
The invention relates to a calibration device capable of providing standard gas meeting calibration conditions for a fire extinguishing agent concentration test system. The device comprises the following components: a standard volume air bag; a hose and a connector; a one-way valve; the T-shaped current divider, the console and the temperature sensor; high precision flow meter, etc. The device connection is shown in fig. 2.
Device composition and functions of each part:
1. standard volume balloon: calculating according to the air extraction capacity of the equipment; in order to achieve the purpose of testing; the volume of the balloon is selected according to the following formula:
fire extinguishing agent concentration test system vacuum pump air exhaust capacity L/min air exhaust time 2min ═ gasbag volume
2. Hose and connector: the hose is used for connecting the air bag and the tested equipment, the air bag and the air bottle, and the air bag and the standard atmosphere; the hose is provided with a quick connection mechanism, such as a buckle and the like, and can be quickly connected with equipment.
3. The one-way valve is used for controlling the flow direction of gas and realizing the switching of standard gas types of the test system.
T-shaped shunt: the device is used for dividing the gas in the air bag into a plurality of paths, wherein the inlet is a single channel, and the outlet is a plurality of channels. These channels allow for conversion of a single-channel standard gas multi-channel calibration gas. The efficiency is improved.
5. High-precision temperature sensor: the temperature value under the standard gas calibration state is measured and controlled, the concentration of the standard gas is corrected, and the corrected value is given. Because of the high temperature requirements in this gas measurement principle, the entire measurement environment is heated, whereas the gas concentration of the standard gas is given a value at 20 ℃ in ambient conditions. The temperature measurement performance index is not lower than 1:4 of the temperature measurement performance index of the calibrated equipment.
6. High-precision flow sensor: the flow rate of the standard gas is detected as the flow standard data of the calibrated device. The performance index of the sensor should be no less than 1:4 of the calibrated test equipment performance index.
7. High-precision pressure sensor: the pressure sensor is used for detecting the pressure values of the standard gas and the air in the standard air bag. For detecting the condition of the gas in the airbag. The performance index of the sensor is not better than 0.1%.
8. A pressurizing pump: the air pressure pump is arranged at the rear end of the one-way valve of the air inlet hose, and when air is fed, the air pressure rushing into the standard air bag is higher than the atmospheric pressure by using the pressurizing pump. The pressure in the air bladder is preferably about 1.5 times atmospheric pressure.
9. A console: the system is used for controlling and recording the whole calibration process and obtaining data of temperature and flow rate, acquiring the acquired data of the calibrated fire extinguishing agent concentration test system through signal cross-linking, and obtaining the final calibration data through a correction and data processing method. The console can be designed into a mechanism of a single PC or a mobile terminal mode, and is convenient to use in the field.
The invention is suitable for measuring the gas concentration in engineering tests, including the measurement of gases such as fire extinguishing agent concentration, CO2, nitrogen and the like.
Device component connection relationship:
1. standard volume balloon:
the standard volume air bag is provided with two ports, two air inlets and an air outlet. The two air vents are respectively designed on the opposite surfaces of the air bag; the temperature sensor is arranged in the air bag and used for monitoring the temperature of the standard gas and the air so as to reflect the gas temperature on site and correct the gas concentration; the pressure sensor is arranged inside the air bag, the pressure value entering the air bag is detected, and the pressure inside the air bag is ensured to be larger than that of the external air bag.
The standard volume gasbag adopts soft material to make, can ensure under the pumping operating condition of pump that the gas of standard volume gasbag can take out totally clean to guarantee to change the gaseous pure and clean degree behind the gas, the material can select materials such as polyethylene, silica gel, chooses to use the customization through the chooseing of multiple material and has guaranteed that gas and the material of chooseing for use do not take place chemical reaction. Calculating according to the air extraction capacity of the equipment; in order to achieve the purpose of testing; the volume of the balloon is selected according to the following formula: the fire extinguishing agent concentration test system vacuum pump pumping capacity L/min and pumping time 2min are standard air bag volume.
The standard air inlet of the standard volume air bag is connected with the air bottle through a hose. The two ends of the hose are provided with buckles and can be connected with the gas cylinder through a clamping hoop or a screwing mode. A gas one-way valve is arranged on the hose, and the connection between the standard-volume air bag and the air bottle is cut off through the locking of the valve, so that the gas purity inside the air bag is ensured. The one-way valve can control the flow direction of gas, and the test system can accurately acquire the type of the gas to be used. The choice of valve is required to enable fast gas passage control.
The high-precision temperature sensor is used for measuring and controlling the temperature value of the standard gas in a calibration state, correcting the concentration of the standard gas and giving a correction value. Because of the high temperature requirements in this gas measurement principle, the entire measurement environment is heated, whereas the gas concentration of the standard gas is given a value at 20 ℃ in ambient conditions. The temperature measurement accuracy is not lower than 1:4 of the calibrated equipment.
The reference air inlet of the standard volume air bag is connected with the atmosphere through a hose at one end, and the part of the hose far away from the standard volume air bag is provided with a single valve so as to control air to realize the communication relation between the standard volume air bag and the atmosphere according to the control purpose. To ensure the purity of the received air, the air ports are located as far as possible. According to the concentration of gas, the suitable hose length is selected to the ventilation degree of environment, and this section hose connection length that can choose for use in this device should be greater than the twice of standard volume gasbag and gas cylinder connection hose length.
The standard volume airbag vent is connected to a T-adapter. The two ends of the hose are provided with fastening buckles and can be connected with the T-shaped adapter and the air bag in a clamping or screwing mode. The part of the hose connected with the T-shaped interface is provided with a single valve, and the gas for controlling the air bag can be sent to the fire extinguishing agent concentration testing system according to the operation and use requirements by opening and closing the air bag.
The T-adapter converts the standard gas in the standard volume bladder to multiple gases through a single channel inlet and a multiple channel outlet. The gas output quantity is generally more than 10 paths. The inlet hose of the T-shaped adapter is connected through a fastener; the outlet of the T-shaped adapter is connected with a high-precision flowmeter, the outlet of the high-precision flowmeter is connected with a hose, and the hose is connected with a fire extinguishing agent concentration testing system.
The high-precision flowmeter is used for detecting the flow speed of the standard gas and taking the flow speed as the flow calibration data of the calibrated device; and adjusting the opening and closing state of the one-way valve according to the real-time observation speed of the flowmeter so as to ensure that the flow rate can meet the calibration requirement. The selected flowmeter should be better than 5SLM +/-0.1 SLM, and the installation and working environment requirements of the high-precision flowmeter should be satisfied in the environment outside the laboratory, and the flowmeter should be convenient to move and maintain the performance characteristics in moving and transportation.
A pressure sensor: the pressure value detection device is used for detecting the pressure value of gas stored in the air bag, and when standard gas or atmosphere is required to enter the air bag with the standard volume, the pressure value is required to detect the process in real time in the inflating process. And ensures that the pressure of the air bag is slightly larger than the value of the air bag with the standard volume after the air bag is inflated.
A pressurizing pump: the air bag pressure adjusting device is arranged at the front end of the air inlet pipe, and ensures that the air bag pressure is higher in the air inlet process.
The controller has the functions of control, operation, alarm, data processing and the like, and comprises a touch screen, a control core, a power supply and the like.
The controller is connected with the output ends of the high-precision temperature sensor, the high-precision flowmeter and the high-precision pressure sensor, so that real-time detection is realized, the set value of the standard gas is adjusted in an auxiliary manner, the whole calibration process is recorded, and the data of temperature and flow rate are obtained; acquiring the acquired data of the calibrated fire extinguishing agent concentration test system through signal cross-linking, and acquiring the final calibration data through a correction and data processing method. The console is designed to be a single PC or a mobile terminal, and is convenient to be matched with equipment to be used in an outfield.
The use method of the device comprises the following steps:
connecting a standard volume air bag; a hose and a connector; a one-way valve; a T-shaped shunt, a temperature sensor; a high-precision flow meter; a pressure sensor; and starting the gas concentration testing system by the pressurizing pump and the gas concentration testing system, and entering a preheating state.
And opening an air valve, closing a flow divider valve and a standard air source valve, pumping air into the standard air bag by using a pumping pump, and closing the pumping pump and the air one-way valve when the pressure of the standard air bag is 1.5 times of the atmospheric pressure.
Opening a one-way valve at the front end of the flow divider to ensure that the fire extinguishing agent concentration testing system is communicated with the standard air bag, reading the indicating values of the temperature sensor, the pressure sensor and the flowmeter on the controller when the gas concentration in the atmosphere is 0SLM, monitoring the concentration and the flow of the atmosphere at the moment to be within a preset target value range, and recording;
waiting for the fire extinguishing agent concentration test system to completely pump out the air in the standard air bag; (when the pressure sensor shows a pressure close to 0MPa, the pressure in the standard airbag is 0MPa)
Preferably, when the air in the standard air bag is completely pumped out by the gas concentration testing system, and the display value of the pressure sensor is preferably 0MPa, the one-way valve at the front end of the flow divider is closed, and the testing system stops working.
Opening a standard gas source and a standard gas source valve, and waiting for the standard gas to fill the air bag; simultaneously detecting that the display value of the temperature sensor is within the allowable range of the environmental temperature; when the pressure sensor shows stability, the standard air bag is filled with standard air.
Preferably, the standard gas valve 2 is closed when the pressure sensor display value is preferably 0.5 times the standard gas source cylinder pressure.
When the standard air bag is full of standard air, the standard air source valve 2 is closed;
opening a one-way valve at the front end of the flow divider, monitoring indicating values of the flow meters, monitoring the indicating values of the gas concentration testing system and the monitored indicating values of the pressure sensors, and recording data and indicating values of the flow meters of all channels by the fire extinguishing agent concentration testing system when the acquired data display values are stable and the pressure sensors are more than 0;
and after the calibration of one standard air source is completed, closing all the one-way valves, replacing the standard air source and carrying out the operation of the next calibration point.
And analyzing the data to obtain calibration data, and fitting the calibration data of each concentration measurement point in the measuring range by a least square method to obtain a calibration result.
Best embodiment 2: fire extinguishing agent concentration test system based on wireless transmission
The fire extinguishing agent concentration testing system is key test equipment used for engine fire extinguishing tests in scientific research institutions, and the equipment is used as important equipment and must be periodically calibrated. The apparatus mainly comprises:
the concentration testing device comprises four parts, namely a concentration testing unit, a computer acquisition system, a power supply system and a calibration device. In order to realize constant temperature treatment of the gas at 121 ℃ and reduce heat loss, the equipment comprises a gas preheating device and a laminar flow pipe heating device.
In calibration, the ambient temperature should be controlled at 20 ℃. + -. 2 ℃ and the flow indication should be 5 SLM. + -. 0.1 SLM.
The invention provides the calibration device capable of providing the standard gas meeting the calibration condition for the fire extinguishing agent concentration test system, the signal processing and the cross-linking of the device are realized in a wireless transmission mode, and the complexity of the system installation and use is reduced. The device comprises the following components: a standard volume air bag; a hose and a connector; an electromagnetic valve; the wireless temperature sensor comprises a T-shaped shunt, a wireless control platform and a wireless temperature sensor; high-precision wireless flowmeters and the like. The device connection relationship is shown in fig. 3.
The device functions are as follows:
1. standard volume balloon: calculating according to the air extraction capacity of the equipment; in order to achieve the purpose of testing; the volume of the balloon is selected according to the following formula:
fire extinguishing agent concentration test system vacuum pump air exhaust capacity L/min air exhaust time 2min ═ gasbag volume
Standard volume air bag
2. Hose and connector: the hose is used for connecting the air bag and the tested equipment, the air bag and the air bottle, and the air bag and the standard atmosphere; the hose is provided with a quick connection mechanism, such as a buckle and the like, and can be quickly connected with equipment.
3. The one-way valve is used for controlling the flow direction of gas, and the testing system can accurately obtain the type of the gas to be used. The choice of valve is required to enable fast gas passage control.
T-shaped shunt: the device is used for dividing the gas in the air bag into a plurality of channels, and the channels can realize conversion from single-channel calibration to multi-channel calibration.
5. High-precision wireless temperature sensor: the temperature value under the standard gas calibration state is measured and controlled, the concentration of the standard gas is corrected, and the corrected value is given. Because of the high temperature requirements in this gas measurement principle, the entire measurement environment is heated, whereas the gas concentration of the standard gas is given a value at 20 ℃ in ambient conditions. The temperature measurement accuracy is not lower than 1:4 of the calibrated equipment. The sensor may send data to the controller by wireless transmission.
6. High-precision wireless flowmeters: the flow rate of the standard gas is detected as the flow calibration data of the calibrated device. The sensor may send data to the controller by wireless transmission.
7. The control terminal: the system is used for controlling and recording the whole calibration process and obtaining data of temperature and flow rate, acquiring the acquired data of the calibrated fire extinguishing agent concentration test system through signal cross-linking, and obtaining the final calibration data through a correction and data processing method. The console can rapidly acquire data of the sensor and the fire extinguishing agent concentration testing system in a wireless communication mode, and simplifies the use mode of equipment and the volume of the whole device by selecting handheld equipment such as PDA and the like, so that the console is convenient to use in the field.
8. A wireless transmission module: through the additional installation of this module, expand fire extinguishing agent concentration test system's function for fire extinguishing agent concentration test system can be through wireless network transmission data, ensures that wireless control terminal can acquire entire system's data.
Device component connection relationship:
2.1. standard volume balloon:
the standard volume air bag is provided with two ports, two air inlets and an air outlet. The two air vents are respectively designed on the opposite surfaces of the air bag; the temperature sensor is arranged in the air bag and used for monitoring the temperature of the standard gas and the air so as to reflect the gas temperature on site and correct the gas concentration; the pressure sensor is arranged inside the air bag, the pressure value entering the air bag is detected, and the pressure inside the air bag is ensured to be larger than that of the external air bag.
The standard volume gasbag adopts soft material to make, can ensure under the pumping operating condition of pump that the gas of standard volume gasbag can take out totally clean to guarantee to change the gaseous pure and clean degree behind the gas, the material can select materials such as polyethylene, silica gel, chooses to use the customization through the chooseing of multiple material and has guaranteed that gas and the material of chooseing for use do not take place chemical reaction. Calculating according to the air extraction capacity of the equipment; in order to achieve the purpose of testing; the volume of the balloon is selected according to the following formula: the fire extinguishing agent concentration test system vacuum pump pumping capacity L/min and pumping time 2min are standard air bag volume.
The standard air inlet of the standard volume air bag is connected with the air bottle through a hose. The two ends of the hose are provided with buckles and can be connected with the gas cylinder through a clamping hoop or a screwing mode. A gas one-way valve is arranged on the hose, and the connection between the standard-volume air bag and the air bottle is cut off through the locking of the valve, so that the gas purity inside the air bag is ensured. The one-way valve can control the flow direction of gas, and the test system can accurately acquire the type of the gas to be used. The choice of valve is required to enable fast gas passage control.
The high-precision temperature sensor is used for measuring and controlling the temperature value of the standard gas in a calibration state, correcting the concentration of the standard gas and giving a correction value. Because of the high temperature requirements in this gas measurement principle, the entire measurement environment is heated, whereas the gas concentration of the standard gas is given a value at 20 ℃ in ambient conditions. The temperature measurement accuracy is not lower than 1:4 of the calibrated equipment. And selecting a sensor with a wireless connection mode to realize a wireless control mode.
The reference air inlet of the standard volume air bag is connected with the atmosphere through a hose at one end, and the part of the hose far away from the standard volume air bag is provided with a single valve so as to control air to realize the communication relation between the standard volume air bag and the atmosphere according to the control purpose. To ensure the purity of the received air, the air ports are located as far as possible. According to the concentration of gas, the suitable hose length is selected to the ventilation degree of environment, and this section hose connection length that can choose for use in this device should be greater than the twice of standard volume gasbag and gas cylinder connection hose length.
The standard volume airbag vent is connected to a T-adapter. The two ends of the hose are provided with fastening buckles and can be connected with the T-shaped adapter and the air bag in a clamping or screwing mode. The part of the hose connected with the T-shaped interface is provided with a single valve, and the gas for controlling the air bag can be sent to the fire extinguishing agent concentration testing system according to the operation and use requirements by opening and closing the air bag.
The T-adapter converts the standard gas in the standard volume bladder to multiple gases through a single channel inlet and a multiple channel outlet. The gas output quantity is generally more than 10 paths. The inlet hose of the T-shaped adapter is connected through a fastener; the outlet of the T-shaped adapter is connected with a high-precision flowmeter, the outlet of the high-precision flowmeter is connected with a hose, and the hose is connected with a fire extinguishing agent concentration testing system.
The high-precision flowmeter is used for detecting the flow speed of the standard gas and taking the flow speed as the flow calibration data of the calibrated device; and adjusting the opening and closing state of the one-way valve according to the real-time observation speed of the flowmeter so as to ensure that the flow rate can meet the calibration requirement. The selected flowmeter should be better than 5SLM +/-0.1 SLM, and the installation and working environment requirements of the high-precision flowmeter should be satisfied in the environment outside the laboratory, and the flowmeter should be convenient to move and maintain the performance characteristics in moving and transportation. And selecting a sensor with a wireless connection mode to realize a wireless control mode.
A pressure sensor: the pressure value detection device is used for detecting the pressure value of gas stored in the air bag, and when standard gas or atmosphere is required to enter the air bag with the standard volume, the pressure value is required to detect the process in real time in the inflating process. And ensures that the pressure of the air bag is slightly larger than the value of the air bag with the standard volume after the air bag is inflated.
A pressurizing pump: the air bag pressure adjusting device is arranged at the front end of the air inlet pipe, and ensures that the air bag pressure is higher in the air inlet process.
The controller has the functions of control, operation, alarm, data processing and the like, and comprises a touch screen, a control core, a power supply and the like. The control core can be an MSP430 series single chip microcomputer or equipment with higher control speed and higher control capability.
The device can receive the output values of the temperature sensor, the flowmeter and the pressure sensor, realize real-time detection, assist in adjusting the given value of the standard gas, record the whole calibration process and obtain the data of temperature and flow rate; the opening and closing state of the electromagnetic valve is controlled through the design of the calibration method, so that the calibration process is conveniently and quickly realized; acquiring the collected data of the calibrated fire extinguishing agent concentration test system through a signal repeater or other wireless modes, and obtaining the final calibration data through a correction and data processing method.
The control terminal has a built-in sound-light alarm function, and when the flow rate and the temperature of the collected standard air source exceed the range of a preset value, the terminal equipment can provide sound reminding or light change reminding in time so as to ensure that a user can know the state in the calibration process in time.
The terminal should have data processing capability to process the calibration data, including least square method, fitting, etc.
The design of the control console adopts the mode of handheld equipment such as a PDA and the like, and the control console is conveniently matched with the outfield of the whole calibration device for use. Meanwhile, the controller can realize the work control of a plurality of systems, can control a plurality of sets of test data through the operation of the platform, and has certain universality.
The device can realize whole calibration process through remote control's mode, can guarantee personnel and not in same space with calibration gas's emission, can be arranged in toxic gaseous test system calibration to guarantee personnel's safety.
The device using method comprises the following steps: the operation flow is the same as that of the preferred embodiment 1, except that the sensor and the controller transmit data by wireless, and the connection mode is simplified.
The adoption of the one-way solenoid valve enables the data to be reflected more quickly and efficiently in the data process, and the operation process is solidified through software, so that more accurate control is realized, and the error rate is reduced.
The technical effects of the invention comprise:
on the first hand, the structure of the device can provide a stable gas source for a gas concentration test system;
in the second aspect, the device can ensure that the environmental conditions meet the calibration requirements in the test process through the detection of the console, the temperature sensor and the flow sensor, and realize the function of alarming when the environmental conditions are out of tolerance;
in a third aspect, the console can realize data online processing, ensure that the equipment can obtain calibration result data on the using site, and complete judgment.
Claims (9)
1. A gas concentration test system calibration device is characterized by comprising a hose, a valve, a standard volume air bag, a pressurizing pump, a T-shaped flow divider, a flow meter, a temperature sensor, a pressure sensor and a controller;
the standard air source is communicated with the standard air bag through a first hose, and a standard air source valve is arranged on the first hose; the standard-volume air bag is communicated with the inlet end of the T-shaped diverter through a second hose, and a diverter valve is arranged on the second hose; a temperature sensor and a pressure sensor are arranged in the standard volume air bag; the standard volume air bag is used for storing gas input by the first hose or the second hose; a plurality of output ends of the T-shaped flow divider are communicated with a gas concentration testing system calibration device through hoses, and each hose is provided with a high-precision flowmeter; the controller collects and displays the collection quantity of the temperature sensor and the high-precision flowmeter; the atmosphere is communicated with the standard air bag through a third hose, and a pressurizing pump is arranged on the third hose and used for pumping air with pressure higher than atmospheric pressure into the standard volume air bag; an air valve is also arranged on the third hose.
2. The gas concentration test system calibration device of claim 1, further comprising: clamping a hoop;
the clamp is used to connect the hose to other components of the gas concentration test system calibration apparatus.
3. The calibration device for a gas concentration test system according to claim 1, wherein the standard volume air bag is provided with air holes connected with a hose on the outer side, and the air holes are distributed on two sides of the air bag.
4. The gas concentration test system calibration device of claim 2, wherein the standard volume bladder is a thermoplastic bladder.
5. The calibration device for the gas concentration test system according to claim 1, wherein the valve has two states of opening and closing, and the valve can communicate devices at two ends when being opened.
6. The calibration device for a gas concentration test system according to claim 5, wherein the valves are one-way manual valves or one-way solenoid valves, and the controller controls the respective solenoid valves to be opened or closed according to a user's instruction.
7. The gas concentration test system calibration device according to claim 1 or 2, wherein the temperature sensor and the pressure sensor are fixed on the inner wall of the airbag, the technical index of the temperature sensor is better than 0.1 ℃, the technical index of the pressure sensor is 0.1%, and the temperature sensor and the pressure sensor can select a wired or wireless data transmission mode.
8. The gas concentration test system calibration device of claim 6, wherein the controller is an MSP430 single chip microcomputer.
9. The gas concentration test system calibration device according to claim 1, wherein the flow meter is a high-precision flow meter, the technical index of the high-precision flow meter is better than 0.1SLM, and the high-precision flow meter selects a wired or wireless data transmission mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359719.5U CN211553920U (en) | 2019-12-24 | 2019-12-24 | Gas concentration test system calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359719.5U CN211553920U (en) | 2019-12-24 | 2019-12-24 | Gas concentration test system calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211553920U true CN211553920U (en) | 2020-09-22 |
Family
ID=72509175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922359719.5U Active CN211553920U (en) | 2019-12-24 | 2019-12-24 | Gas concentration test system calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211553920U (en) |
-
2019
- 2019-12-24 CN CN201922359719.5U patent/CN211553920U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110927346B (en) | Gas concentration test system calibration method and device | |
| CN103380374B (en) | Method for measuring breath alcohol concentration and apparatus therefor | |
| CN104792458B (en) | A kind of wireless pressure data collecting instrument calibrating installation and method thereof | |
| CN107153106A (en) | A kind of dynamic dilution gas calibration device | |
| US20030149536A1 (en) | Engine exhaust emissions measurement correction | |
| CN206788122U (en) | A kind of multichannel gas-chromatography electronics gas circuit pressure flow control device | |
| US9168407B2 (en) | Calibration module and remote test sequence unit | |
| CN107328615B (en) | Intelligent gas sample injection controller | |
| US7565846B2 (en) | Particulate sampler and dilution gas flow device arrangement for an exhaust sampling system | |
| CN108827821A (en) | A kind of fast analyser and method for density of hydrogen in nuclear power plant containment shell | |
| CN113504361A (en) | Automatic detection method and system | |
| CN104865354A (en) | Formaldehyde gas detector verification device, system and method | |
| CN211553920U (en) | Gas concentration test system calibrating device | |
| CN107238618B (en) | Reaction control and mass spectrometry device for in-situ cell combination of X-ray characterization equipment | |
| CN207380006U (en) | Minute gas online detection instrument | |
| CN214408245U (en) | Multi-channel automatic time sequence sampling system | |
| KR101717943B1 (en) | Airtight Test Apparatus for Nuclear Facility | |
| CN207866782U (en) | Gas-monitoring meter locale calibration equipment | |
| CN212255180U (en) | Rapid measurement and calibration device based on gas detection instrument | |
| CN206805196U (en) | A kind of gas remote data acquisition system | |
| CN107543666A (en) | external leak rate test device | |
| CN209432689U (en) | Carbonomonoxide concentration detection device | |
| CN210269762U (en) | Automatic detection device for gas mercury detector | |
| CN207866707U (en) | The full laser remote sensing detecting system of motor-vehicle tail-gas | |
| CN106404969A (en) | Flow regulation monitoring system for gas chromatograph and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |