A portable ultra-high flow aerosol sampler calibration device

Abstract

The utility model relates to a portable super -large flow aerosol sampler calibration device, it includes orifice flowmeter suite and calibration device host computer, the orifice flowmeter suite includes a hollow cylindrical body, and the orifice plate of throttling that is horizontally installed in this cylindrical body inside, be equipped with pressure interface on the cylindrical body lateral wall, and the bottom of cylindrical body is connected with quick -detach flange, calibration device host computer is connected with the pressure interface of orifice flowmeter suite through connecting hose, calibration device host computer is built -in with differential pressure sensing module and control processing module, is equipped with display screen on calibration device host computer, control processing module electric connection differential pressure sensing module. This portable super -large flow aerosol sampler calibration device has portable easy to use, installation fast and so on, and it realizes light, fast in -situ calibration through the scheme of portable design and direct measurement at the air inlet.

Description

Technical Field

[0001] This utility model relates to the field of gas flow measurement technology, specifically to a portable ultra-high flow aerosol sampler calibration device. Background Technology

[0002] Ultra-high flow rate aerosol samplers are key equipment in fields such as radiation environment monitoring, and the accuracy of their sampling flow rate directly affects the reliability of monitoring data. To ensure data accuracy, these samplers require regular flow rate calibration.

[0003] Traditional calibration methods typically involve disassembling the sampler and sending it to a metrology laboratory. This process is cumbersome, time-consuming, labor-intensive, and has high maintenance costs. Furthermore, differences between the laboratory environment and field conditions can lead to inaccurate calibration results. Therefore, on-site online calibration is becoming the future trend. Currently, some on-site calibrations utilize turbine flow meters, but these devices suffer from the following problems:

[0004] (1) The equipment is large and heavy, making it inconvenient to transport and handle on site;

[0005] (2) The installation is complicated. It usually needs to be connected to the outlet of the sampler, which is inconvenient to operate and has high requirements for on-site installation conditions;

[0006] (3) The measurement position is located at the end of the sampling process. If there is a leak in the internal pipeline of the sampler, it cannot accurately reflect the true inlet sampling flow rate, which will affect the accuracy of the calibration.

[0007] (4) They usually rely on external power supply, which limits their use in outdoor scenarios. Therefore, developing a portable and easy-to-use on-site calibration device for ultra-high flow aerosol samplers is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the shortcomings of existing field calibration equipment, such as bulkiness, complex installation, and poor measurement position, and to provide a portable ultra-high flow aerosol sampler calibration device to achieve convenient and rapid on-site calibration.

[0009] This portable high-flow-rate aerosol sampler calibration device includes an orifice flowmeter kit for installation on the inlet of the aerosol sampler to be calibrated, and a calibration device main unit connected to the orifice flowmeter kit. The orifice flowmeter kit includes a hollow cylindrical body and a throttling orifice plate horizontally installed inside the cylindrical body. A pressure port for exporting differential pressure signals is provided on the side wall of the cylindrical body. A quick-release flange for forming a sealed connection with the inlet of the aerosol sampler is connected to the bottom of the cylindrical body. The calibration device main unit is connected to the pressure port of the orifice flowmeter kit via a connecting hose. The calibration device main unit has a built-in differential pressure sensing module and a control processing module, and a display screen is provided on the calibration device main unit. The control processing module is electrically connected to the differential pressure sensing module and the display screen.

[0010] Preferably, the main unit of the calibration device also has a built-in temperature sensing module and an atmospheric pressure sensing module that are connected to the control processing module.

[0011] Preferably, the main unit of the calibration device also has a built-in rechargeable power supply module.

[0012] Preferably, the calibration device host also includes a data storage unit and a communication interface.

[0013] This utility model discloses a portable ultra-high flow aerosol sampler calibration device, which has the advantages of being portable, easy to use, and quick to install. Through its portable design and direct measurement at the air inlet, it achieves convenient and rapid on-site calibration. Attached Figure Description

[0014] The following description, in conjunction with the accompanying drawings, further illustrates the portable ultra-high flow aerosol sampler calibration device of this utility model:

[0015] Figure 1 This is a schematic diagram of the overall structure of the portable ultra-high flow aerosol sampler calibration device;

[0016] Figure 2 This is a system control block diagram of the main unit of the calibration device described in this portable high-flow-rate aerosol sampler calibration device;

[0017] Figure 3 This is a schematic diagram of the in-use status of the portable ultra-high flow aerosol sampler calibration device.

[0018] In the picture:

[0019] 1-Orifice flow meter kit; 11-Cylindrical body; 12-Throttling orifice plate; 13-Pressure interface; 14-Quick-release flange;

[0020] 2-Calibration device main unit; 21-Differential pressure sensing module, 22-Control processing module, 23-Display screen, 24-Temperature sensing module, 25-Atmospheric pressure sensing module, 26-Power supply module, 27-Data storage unit, 28-Communication interface;

[0021] 3-Connecting hose;

[0022] 100 - Aerosol sampler; 101 - Air inlet; 102 - Rain cap. Detailed Implementation

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.

[0026] Implementation method 1: such as Figures 1 to 3 As shown, this portable high-flow-rate aerosol sampler calibration device includes an orifice flowmeter kit 1 for installation on the air inlet of the aerosol sampler to be calibrated, and a calibration device host 2 connected to the orifice flowmeter kit 1. The orifice flowmeter kit 1 includes a hollow cylindrical body 11 and a throttling orifice plate 12 horizontally installed inside the cylindrical body 11. The cylindrical body 11 has a pressure interface 13 for exporting differential pressure signals on its side wall, and a quick-release flange 14 for forming a sealed connection with the air inlet of the aerosol sampler is connected to the bottom of the cylindrical body 11. The calibration device host 2 is connected to the pressure interface 13 of the orifice flowmeter kit 1 via a connecting hose 3. The calibration device host 2 has a built-in differential pressure sensing module 21 and a control processing module 22. The calibration device host 2 has a display screen 23, and the control processing module 22 is electrically connected to the differential pressure sensing module 21 and the display screen 23.

[0027] The orifice flowmeter kit 1 is used to seal and connect with the air inlet 101 of the aerosol sampler 100 to be calibrated during calibration. The orifice flowmeter kit 1 achieves a reliable sealing connection through a quick-release flange 14 with a sealing ring at the bottom and a clamp seal. A throttling orifice plate 12 is horizontally fixed inside the cylindrical body 11. The throttling orifice plate 12 is the core component for flow measurement. When airflow passes through it, a pressure difference related to the flow rate is generated before and after it. The pressure port 13 on the side wall of the cylindrical body 11 is used to export the pressure difference signal before and after the throttling orifice plate 12. The calibration device host 2 serves as a portable control and display unit. It is connected to the pressure interface 13 of the orifice flowmeter kit 1 via the connecting hose 3, and performs human-machine interaction and data display through the display screen 23. The core of the calibration device host 2 is the control processing module 22. The differential pressure sensing module 21 collects the pressure difference transmitted by the pressure interface 13 and generates an analog electrical signal. The analog electrical signal is filtered and amplified by the signal conditioning circuit, and then converted into a digital signal by the analog-to-digital converter upstream of the control processing module 22 and sent to the control processing module 22.

[0028] Implementation method 2: such as Figure 2 As shown, the main unit 2 of this portable high-flow-rate aerosol sampler calibration device also includes a temperature sensing module 24 and an atmospheric pressure sensing module 25, which are signal-connected to the control processing module 22. The main unit 2 also includes a rechargeable power supply module 26. The remaining structures and components are as described in Embodiment 1 and will not be repeated.

[0029] During on-site calibration, the power supply module 26 provides a stable operating voltage for the entire host 2; the differential pressure sensing module 21, the temperature sensing module 24, and the atmospheric pressure sensing module 25 respectively collect the original analog electrical signals of differential pressure, temperature, and atmospheric pressure; these analog electrical signals are first sent to the signal conditioning circuit for filtering and amplification, and then converted into digital signals by the analog-to-digital converter and sent to the control processing module 22.

[0030] Implementation method 3: such as Figure 2 As shown, the calibration device host 2 of this portable ultra-high flow aerosol sampler calibration device also includes a data storage unit 27 and a communication interface 28.

[0031] In use: Open the rain cap 102 of the aerosol sampler 100. First, install the orifice flow meter kit 1 on the air inlet 101 of the aerosol sampler 100, and connect the main unit 2 to the orifice flow meter kit 1 using the connecting hose 3. Then, start the aerosol sampler 100 to be calibrated and set a target flow rate value. The sampler 100 starts to draw air, and the gas flows through the orifice plate 12 inside the orifice flow meter kit 1. The operator can compare the display information of the calibration device main unit 2 with the display value of the sampler 100 itself to complete the calibration work at that flow rate point.

[0032] This portable, high-flow-rate aerosol sampler calibration device boasts advantages such as portability, ease of use, and quick installation. Its portable design and direct in-situ measurement solution enable convenient and rapid on-site calibration. Specifically:

[0033] (1) The device adopts a split design of main unit and kit, which is small in size and light in weight, and is equipped with built-in battery, which solves the problem of traditional equipment being bulky and dependent on external power.

[0034] (2) The quick-release flange is used for connection. During calibration, the orifice flow meter kit can be quickly and sealedly installed at the sampler inlet without complicated pipe connections. The operation is extremely simple and efficient.

[0035] (3) By directly measuring at the air inlet of the sampler, the actual sampling flow rate of the sampler can be accurately reflected, avoiding errors caused by pipeline leakage and other problems, and the data is more reliable.

[0036] The above description illustrates the main features, basic principles, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments or examples described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments or examples should be considered exemplary and not restrictive. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A portable ultra-high flow rate aerosol sampler calibration device, characterized in that: The device includes an orifice flowmeter kit (1) for mounting on the inlet of an aerosol sampler to be calibrated, and a calibration unit main unit (2) connected to the orifice flowmeter kit (1), wherein... The orifice flow meter kit (1) includes a hollow cylindrical body (11) and a throttling orifice plate (12) horizontally installed inside the cylindrical body (11). The cylindrical body (11) has a pressure port (13) for exporting differential pressure signals on its side wall. The bottom of the cylindrical body (11) is connected to a quick-release flange (14) for forming a sealed connection with the air inlet of the aerosol sampler. The calibration device host (2) is connected to the pressure interface (13) of the orifice flow meter kit (1) via a connecting hose (3). The calibration device host (2) has a built-in differential pressure sensing module (21) and a control processing module (22). The calibration device host (2) is equipped with a display screen (23). The control processing module (22) is electrically connected to the differential pressure sensing module (21).

2. The portable ultra-high flow aerosol sampler calibration device according to claim 1, characterized in that: The calibration device host (2) also has a built-in temperature sensing module (24) and an atmospheric pressure sensing module (25) that are connected to the control processing module (22).

3. The portable ultra-high flow aerosol sampler calibration device according to claim 2, characterized in that: The calibration device host (2) also has a built-in rechargeable power supply module (26).

4. The portable ultra-high flow aerosol sampler calibration device according to claim 3, characterized in that: The calibration device host (2) also includes a data storage unit (27) and a communication interface (28).

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