Fusion type comprehensive gas flow calibration device

Abstract

The utility model relates to the technical field of flow monitoring, and discloses a fusion type comprehensive gas flow calibration device which comprises a shell, a gas inlet, a gas outlet and a gas outlet, a cavity is formed in the inner side of the shell, and a positive pressure opening, a negative pressure opening, a gas inlet and a gas outlet are formed in the top end of the shell; the liquid soap storage mechanism is arranged in the cavity of the shell; the screen controller is fixedly mounted on the outer side of the outer wall of the shell; the testing mechanism is arranged in the cavity of the shell and is connected with the liquid soap storage mechanism; the pore plate group is respectively connected to the air outlet, the positive pressure port and the negative pressure port, the device is small in size and convenient to carry, a rechargeable lithium battery is arranged in the device, an external power supply is not needed, and the burden of a worker during equipment flow checking in a field severe environment is greatly reduced. By matching with different flow interfaces, the device can test various sampling devices, and the function of one machine with multiple purposes is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of flow monitoring, in particular to a fusion-type comprehensive gas flow calibration device. Background Technique

[0002] In the field of radiation monitoring, gas sample collection devices such as gas iodine samplers, tritium carbon samplers, large-flow aerosol samplers, and ultra-large-flow aerosol samplers all need to be periodically calibrated. At present, the flow calibration technology commonly used in the market is a scheme based on vortex flow meters. These devices are usually large in size and heavy in weight, and are suitable for fixed laboratory environments. When in use, the sampler needs to be connected to the vortex flow meter, and the flow rate is calculated by measuring the fluid vibration to calibrate and verify the flow accuracy of the sampler. This technology is mainly applied indoors or in relatively stable places, and there are certain limitations in portability and adaptability for radiation monitoring devices that need to be frequently moved or used in the field.

[0003] However, the existing vortex flow meter calibration scheme has exposed some deficiencies when dealing with radiation monitoring devices in the field. The volume and weight make it extremely inconvenient to carry and operate under harsh field conditions, increasing the burden on staff. Since different types of sampling devices may require different flow calibration devices, it may be necessary to carry multiple dedicated calibration devices in actual applications, further increasing the complexity and cost of field operations. In addition, traditional devices usually require an external power supply, and in the field environment, the power supply may be unstable or unavailable, restricting the practicality of the devices. Therefore, for the field of radiation monitoring, there is an urgent need for a more portable, multifunctional, and field-environment-adaptable flow calibration device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fusion-type comprehensive gas flow calibration device to solve the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A fusion-type comprehensive gas flow calibration device, comprising:

[0006] A housing, a cavity is arranged inside the housing, an air inlet and an air outlet are opened at the top of the housing, and the air inlet and the air outlet can be respectively connected to small-flow devices, medium-flow devices, and large-flow devices;

[0007] A soap solution storage mechanism, which is arranged inside the cavity of the housing and is used to test small-flow devices;

[0008] A screen controller, which is fixedly installed on the outer wall of the housing;

[0009] A testing mechanism, which is arranged in the cavity of the housing; used for testing medium-flow devices or large-flow devices;

[0010] At least one pressure sensor, which is arranged inside the housing and connected to the testing mechanism.

[0011] In a feasible implementation manner, the soap solution storage mechanism includes: a storage chamber, which is arranged in the inner cavity of the housing; a soap film tube, which is fixed at the top of the storage chamber; a soap film flowmeter, which is arranged on one side of the storage chamber and can be connected to the air inlet on the housing; a data acquisition component, which is installed above the soap film tube.

[0012] In a feasible implementation manner, a bubble control device is further arranged on the storage chamber, and the bubble control device is connected to the soap film tube for controlling the generation of bubbles in the soap film tube.

[0013] In a feasible implementation manner, the data acquisition component includes: a lower optoelectronic sensor, which is installed at the bottom end of the soap film tube; a middle optoelectronic sensor, which is arranged in the middle of the soap film tube and directly above the lower optoelectronic sensor; an upper optoelectronic sensor, which is arranged at the top end of the soap film tube and directly above the middle optoelectronic sensor.

[0014] In a feasible implementation manner, the testing mechanism includes: two three-way valves, one of the three-way valves is connected to the air inlet, and the other three-way valve is connected to the air outlet; a medium-flow orifice plate, which is connected between the first channels of the two three-way valves; a large-flow orifice plate, which is connected between the second channels of the two three-way valves.

[0015] In a feasible implementation manner, a movable power source is further arranged in the calibration device, and the movable power source is used to supply power to the data acquisition component and the pressure sensor.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: the device is small in size and convenient to carry, with a built-in rechargeable lithium battery and no need for an external power source, which greatly reduces the burden on staff when conducting equipment flow verification in harsh outdoor environments; by matching different flow interfaces, the device can test sampling devices with various flows, realizing the function of multi-purpose in one machine; compared with the original dedicated measurement device, the device not only reduces the use cost, but also reduces the input of manpower and material resources, improving the resource utilization efficiency; it can be seen that the design of the device provides an efficient and convenient flow calibration solution for radiation monitoring equipment in outdoor environments. Description of the Drawings

[0017] Figure 1Explosion structure schematic diagram of the present utility model;

[0018] Figure 2 Medium flow orifice plate structure schematic diagram of the present utility model;

[0019] Figure 3 Large flow orifice plate structure schematic diagram of the present utility model;

[0020] Figure 4 Test flow chart of the small flow device in the air extraction state of the present utility model;

[0021] Figure 5 Test flow chart of the small flow device in the air blowing state of the present utility model;

[0022] Figure 6 Test flow chart of the medium flow device or large flow device in the air extraction state of the present utility model;

[0023] Figure 7 Test flow chart of the medium flow device or large flow device in the air blowing state of the present utility model.

[0024] In the figure: 1. Housing, 2. Positive pressure port, 3. Negative pressure port, 4. Air inlet, 5. Air outlet, 6. Screen controller, 7. Storage chamber, 8. Soap film tube, 9. Soap film flowmeter, 10. Bubble control device, 11. Medium flow orifice plate, 12. Large flow orifice plate, 13. Upper photoelectric sensor, 14. Lower photoelectric sensor, 15. Middle photoelectric sensor. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 7As shown in the figure, the utility model provides a technical solution: a fusion type comprehensive gas flow calibration device, including: a housing 1, a soap solution storage mechanism, a screen controller 6, a testing mechanism and at least one pressure sensor; the housing 1, with a cavity inside the housing 1, and an air inlet 4 and an air outlet 5 are opened at the top of the housing 1, and the air inlet 4 and the air outlet 5 can be respectively connected to small flow devices, medium flow devices and large flow devices; the soap solution storage mechanism, arranged inside the cavity of the housing 1, is used to test small flow devices; the screen controller 6, which is fixedly installed on the outer side of the outer wall of the housing 1; the testing mechanism, which is arranged inside the cavity of the housing 1 and is used to test medium flow devices or large flow devices; at least one pressure sensor, arranged inside the housing 1 and connected to the testing mechanism.

[0027] In the specific implementation process, it should be noted that there is a cavity inside the housing 1 to accommodate the soap solution storage mechanism and the testing mechanism, and a positive pressure port 2, a negative pressure port 3, an air inlet 4 and an air outlet 5 are opened at the top of the housing 1 for connecting different measuring components and the device under test. The soap solution storage mechanism is used to store soap solution, and the small flow is measured by observing the bubble passing time through the soap solution storage mechanism. The screen controller 6 is fixed on the outer wall of the housing 1, allowing the user to select the measurement gear and start the measurement process, and at the same time, the measurement results are displayed in real time. The medium flow and large flow devices are connected to the testing mechanism and combined with the pressure sensor to automatically complete the real-time measurement of the gas pressure, ensuring that the device can meet the requirements of different flow ranges and achieve accurate calibration and display.

[0028] The pressure sensor is arranged inside the housing 1 and connected to the positive pressure port 2 and the negative pressure port 3, and is used for reading the pressure during the measurement of medium flow and large flow devices; specifically, when the testing mechanism is connected to the pressure sensor, the gas pressure of the current device is measured by the pressure sensor and the result is output to the screen controller 6.

[0029] In some examples, furthermore, the soap solution storage mechanism includes: a storage chamber 7, a soap film tube 8, a soap film flowmeter 9 and a data acquisition component. The storage chamber 7 is arranged in the inner cavity of the housing 1; the soap film tube 8 is fixed at the top of the storage chamber 7; the soap film flowmeter 9 is arranged on one side of the storage chamber 7 and can be connected to the air inlet 4 on the housing 1; the data acquisition component is installed above the soap film tube 8. The gas volume of the small flow device can be obtained through the data acquisition component, and the gas flow of the small flow device can be accurately calculated and displayed (it should be noted that the current atmospheric pressure and environmental temperature need to be considered during the test process); therefore, this device ensures efficient and accurate calibration within different measurement ranges; this device realizes the integrated gas flow measurement of multiple test components through the soap film flowmeter 9 and the pressure sensor, and the user can complete the accurate calibration and real-time display of the flow through simple operations.

[0030] In some examples, furthermore, a bubble control device 10 is also provided on the storage chamber 7. The bubble control device is connected to the soap film tube 8 and is used to control the generation of bubbles in the soap film tube 8. The data acquisition component includes: an upper photoelectric sensor 13, a lower photoelectric sensor 14, and a middle photoelectric sensor 15; the lower photoelectric sensor 14 is installed at the bottom end of the soap film tube 8; the middle photoelectric sensor 15 is arranged in the middle of the soap film tube 8 and is directly above the lower photoelectric sensor 14; the upper photoelectric sensor 13 is arranged at the top end of the soap film tube 8 and is directly above the middle photoelectric sensor 15.

[0031] In the specific implementation process, it should be noted that the soap liquid storage mechanism includes a storage chamber 7 located at the bottom end inside the cavity of the housing 1 and is used to store soap liquid. The soap film tube 8 is connected to the soap film flowmeter 9, and the soap film flowmeter 9 is connected to the air inlet 4 on the housing 1 so as to access small process equipment to complete the measurement of small-flow air. The data acquisition component is installed on the soap film tube 8 and includes a lower photoelectric sensor 14, a middle photoelectric sensor 15, and an upper photoelectric sensor 13, which are respectively located at the bottom end, the middle part, and the top end of the soap film tube 8 and are used to detect the rising speed of the bubbles passing through the soap film tube 8, thereby calculating the flow rate. The bubble control device 10 provided on the storage chamber 7 is used to manually generate bubbles. When the button in the bubble control device 10 is pressed, the soap liquid rises in the soap film tube 8 to form bubbles, and the bubbles pass through the three photoelectric sensors in sequence. The time when each sensor detects the passing of the bubbles, combined with the known size of the soap film tube 8 and the current atmospheric pressure and temperature, can calculate the actual flow rate of the gas.

[0032] In some examples, furthermore, the test mechanism includes: two three-way valves, a medium flow orifice plate 11, and a large flow orifice plate 12. For the two three-way valves, one three-way valve is connected to the air inlet 4, and the other three-way valve is connected to the air outlet 5; the medium flow orifice plate 11 is connected between the first channels of the two three-way valves; the large flow orifice plate 12 is connected between the second channels of the two three-way valves.

[0033] In the specific implementation process, it should be noted that the test mechanism includes two three-way valves. One of the three-way valves has its passage connected to the air outlet 5 of the housing 1, one end of the medium flow orifice plate 11, and one end of the large flow orifice plate 12. The passage of the other three-way valve is connected to the air outlet 5 of the housing 1, the other end of the medium flow orifice plate 11, and the other end of the large flow orifice plate 12. So as to select a suitable orifice plate for measurement according to the flow range of the device under test. When in the air extraction state for medium flow measurement, the three-way valve switches to the medium flow orifice plate 11, and the gas sequentially passes through the air inlet 4, the three-way valve, the medium flow orifice plate 11, and the air outlet 5. When in the air blowing state for medium flow measurement, the gas sequentially passes through the air outlet 5, the three-way valve, the medium flow orifice plate 11, and the air inlet 4; The medium flow orifice plate 11 and the large flow are connected to their respective pressure sensors to measure the pressure difference generated by the medium flow device and the large flow device. The measurement process of the large flow device is the same in principle.

[0034] In some examples, furthermore, a movable power source is also provided in the calibration device. The movable power source is used to supply power to the data acquisition component and the pressure sensor. The movable power source is a lithium battery. The lithium battery provides energy for all the electrical components in the device. The setting of the lithium battery enables the device to be suitable for on-site calibration and verification of sampling equipment in the wild.

[0035] The overall working principle is as follows:

[0036] This integrated comprehensive gas flow calibration device realizes flexible measurement of different flow devices through the switching of two three-way valves, combined with the medium flow orifice plate 11 and the large flow orifice plate 12, including flow measurement in two states of the air extraction state and the air blowing state of the device. When the user selects the corresponding measurement gear on the screen controller 6, the three-way valve switches to the corresponding orifice plate manually or automatically. The positive pressure port 2 or the negative pressure port 3 passed by the two orifice plates is connected to the corresponding pressure sensor to measure the pressure difference generated by the device under test. Ensure that the device can adapt to different flow ranges, collect data in real time through the pressure sensor, and automatically complete the calculation and display of the flow through the screen controller 6, improving the measurement accuracy and efficiency.

[0037] Among them, the calibration in this solution is a process of determining and adjusting the measurement deviation by comparing the device under test with a standard device of known accuracy. The gear switching may be realized through a three-way valve or other mechanical / electronic switches to enable rapid switching between measurements in different flow ranges. In this solution, the integration in the screen controller 6 can achieve both calibration and switching functions; The solution of this application covers from basic physical measurement principles to advanced electronic calibration methods. Since these technologies and methods have been applied in industry devices, the specific calculation methods are not elaborated too much in this solution.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "above", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front part", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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; at the same time, unless otherwise clearly specified and defined, terms such as "set", "installed", "connected", "fixedly installed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fusion type integrated gas flow calibration device, characterized in that: include: A shell, wherein a cavity is disposed on the inner side of the shell, and an air inlet and an air outlet are provided on the top of the shell, wherein the air inlet and the air outlet can be connected to a small flow device, a medium flow device, and a large flow device respectively; a soap storage mechanism, disposed inside the cavity of the housing, for testing low-flow devices; A screen controller, the screen controller is fixedly mounted on the outer side of the outer wall of the shell; A testing mechanism, which is disposed in the cavity of the housing and is used to test a medium flow device or a large flow device; At least one pressure sensor is arranged inside the housing and is connected to the testing mechanism.

2. The fusion type integrated gas flow calibration device according to claim 1, characterized in that: The soap liquid storage mechanism comprises: a storage chamber, disposed in the inner cavity of the housing; a soap film tube, the soap film tube being fixed to the top of the storage chamber; A soap film flow meter is arranged at one side of the storage chamber and can be connected to the air inlet on the housing; A data acquisition component is installed above the soap film tube.

3. The fusion type integrated gas flow calibration device according to claim 2, characterized in that: The storage chamber is also provided with a bubble control device, which is connected to the soap film tube and is used to control the soap film tube to generate bubbles.

4. The fusion type integrated gas flow calibration device according to claim 2, characterized in that: The data acquisition component includes: A lower photoelectric sensor, wherein the lower photoelectric sensor is installed at the bottom end of the soap film tube; A middle photoelectric sensor, which is arranged in the middle of the soap film tube and is located directly above the lower photoelectric sensor; The upper photoelectric sensor is arranged at the top of the soap film tube and is located directly above the middle photoelectric sensor.

5. The fusion type integrated gas flow calibration device according to claim 4, characterized in that: The testing organization includes: Two three-way valves, one of which is connected to the air inlet and the other is connected to the air outlet; A medium flow orifice plate, wherein the medium flow orifice plate is connected between the first channels of the two three-way valves; A large flow orifice plate is connected between the second channels of the two three-way valves.

6. The fusion type integrated gas flow calibration device according to claim 5, characterized in that: The calibration device is also provided with a movable power supply, which is used to supply power to the data acquisition component and the pressure sensor.

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