Ultrasonic flowmeter environment experiment equipment with adjustable environment temperature and pressure

Abstract

The utility model discloses environment temperature and pressure adjustable ultrasonic flowmeter environment experiment equipment, which comprises a test bed, a connecting flange and a test box, the test bed is provided with a data collector, a first temperature sensor and a first pressure sensor, the connecting flange is connected with the test bed and the test box, and the connecting flange is provided with an air tap and an aviation socket. The test box is provided with a second temperature sensor, a second pressure sensor, a gas storage tank, a flow meter and a gas pump, the flow meter, the gas pump, the gas storage tank, the gas nozzle, the first temperature sensor and the first pressure sensor are connected through gas pipes, and the gas pipes are provided with tee joints and valves. The gas storage tank, the pressure pump, the flow meter, the second temperature sensor and the second pressure sensor are all electrically connected with the aviation socket, the first temperature sensor, the first pressure sensor and the aviation socket are all electrically connected with the data collector, the equipment simulates that oxygen with different flows is introduced into the flow meter under different air pressure and temperature conditions, and the air tightness of the test box is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow meter testing devices, and in particular relates to an ultrasonic flow meter environmental experimental device with adjustable environmental temperature and pressure. Background Art

[0002] The current universal environmental test solution is to run the measuring device in an environmental test chamber to simulate the working conditions under different environmental parameters. If the measuring device needs to be connected to external equipment, it is necessary to use a connecting harness, pipeline, etc. to pass through the external interface of the environmental test chamber to connect the measuring device to the external equipment. The external interface of the environmental test chamber is generally sealed with plasticine to isolate the air in the chamber from the outside atmosphere and maintain the air pressure and temperature in the chamber.

[0003] The air tightness of the external interface of the existing environmental test chamber is relatively poor. It is sealed with plasticine, which cannot effectively isolate the gas in the test chamber from the outside atmosphere. The existing environmental experimental equipment cannot meet the testing requirements of ultrasonic flowmeters when introducing oxygen of different concentrations and flow rates. For tests with higher precision in temperature and air pressure control, ordinary environmental test chambers are difficult to meet the requirements. Utility Model Content

[0004] The purpose of the utility model is to solve at least one problem of the prior art and to provide an ultrasonic flowmeter environmental experiment device with adjustable ambient temperature and pressure.

[0005] To achieve the above-mentioned purpose, the utility model proposes an ultrasonic flowmeter environmental experiment equipment with adjustable ambient temperature and pressure, including a test bench, a connecting flange, and a test box. A data collector, a first temperature sensor, and a first pressure sensor are installed inside the test bench. The connecting flange is used to connect the test bench and the test box. The connecting flange is provided with an air nozzle and an aviation socket. A second temperature sensor, a second pressure sensor, an air storage tank, a flowmeter, and an air pump are provided inside the test box. The flowmeter, the air pump, the air storage tank, the air nozzle, the first temperature sensor, and the first pressure sensor are connected by an air pipe to form a closed-loop air path. The air pipe is provided with a tee and a valve. The air storage tank, the pressure pump, the flowmeter, the second temperature sensor, and the second pressure sensor are all electrically connected to the aviation socket, and the first temperature sensor, the first pressure sensor, and the aviation socket are all electrically connected to the data collector.

[0006] Preferably, the aviation socket includes a signal aviation socket and a power aviation socket.

[0007] Preferably, a computer and a power supply for supplying power to the equipment components are installed in the test bench, and the computer is electrically connected to the data acquisition device and the aviation socket.

[0008] Preferably, the number of the air nozzles is 3, which are an air inlet nozzle, an air outlet nozzle and an air vent nozzle respectively.

[0009] Preferably, the valve of the air pipe part located in the test bench is connected to the air release nozzle for releasing air, and the valve of the air pipe part located in the test box is connected to an external air source.

[0010] Preferably, the connecting flange and the test box are detachably connected.

[0011] Preferably, the connecting flange and the test box are connected with screws.

[0012] Preferably, the gas storage tank is provided with a third temperature sensor and a third pressure sensor, and the third temperature sensor and the third pressure sensor are electrically connected to the aviation socket.

[0013] The beneficial effects of the utility model are as follows: the utility model adopts a connection flange with an air nozzle and an aviation socket to be sealed and installed at the external interface of the test box. The connection flange is used to connect the components in the test box with the components of the external test bench, thereby ensuring the airtightness of the test box without affecting the environment in the box, and the gas flow and electrical signal transmission are smooth; a flow meter, a temperature sensor, a pressure sensor, a gas storage tank, and an air pump are installed in the test box and connected in sequence to form a set of environmental experimental equipment for an ultrasonic flow meter, which can simulate the test of introducing oxygen of different flow rates into the ultrasonic flow meter under different air pressure and temperature conditions; a data collector is arranged in the test bench, and information such as temperature, pressure, and flow is obtained through the data collector, and the computer controls the working condition of the air pump.

[0014] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the connecting flange structure of an embodiment of the utility model.

[0017] Figure 3 It is a top view of the connecting flange of an embodiment of the utility model.

[0018] Figure 4 It is a front view of the connecting flange of an embodiment of the utility model.

[0019] Figure 5 It is a schematic diagram of the working principle of an embodiment of the utility model.

[0020] In the figure: 1-test bench, 2-connecting flange, 3-test box, 4-tee, 5-valve, 11-data acquisition device, 12-first pressure sensor, 13-first temperature sensor, 14-power supply, 15-computer, 21-air nozzle, 22-aviation socket, 31-flow meter, 32-air tank, 33-air pump, 34-second temperature sensor, 35-second pressure sensor. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. The components of the embodiment of the present application described and shown in the drawings here can be arranged and designed in various different configurations. In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when the application product is used, which is only for the convenience of describing the present application 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 application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 5The present embodiment provides an environmental test equipment for an ultrasonic flowmeter with adjustable ambient temperature and pressure, including a test bench 1, a connecting flange 2, and a test box 3. A data collector 11, a first temperature sensor 13, and a first pressure sensor 12 are installed inside the test bench 1. The connecting flange 2 is used to connect the test bench 1 and the test box 3. The connecting flange 2 is provided with a gas nozzle 21 and an aviation socket 22. The test box 3 is provided with a second temperature sensor 34, a second pressure sensor 35, a gas storage tank 32, a flow meter 31, and an air pump 33. The flow meter 31, the air pump 33, the gas storage tank 32, the gas nozzle 21, and the aviation socket 22 are provided inside the test box 3. 21. The first temperature sensor 13, the first pressure sensor 12, the second temperature sensor 34, and the second pressure sensor 35 are connected by an air pipe to form a closed-loop air circuit. The air pipe is provided with a three-way valve 4 and a valve 5. The air storage tank 32, the pressure pump 33, the flow meter 31, the second temperature sensor 34, and the second pressure sensor 35 are all electrically connected to the aviation socket 22. The first temperature sensor 13, the first pressure sensor 12, and the aviation socket 22 are all electrically connected to the data acquisition device 11. The main body of the test box is an existing structure, and the air pressure and temperature in the test box can be adjusted.

[0025] In this embodiment, refer to Figures 2 to 4 The aviation socket 22 includes a signal aviation socket and a power aviation socket. The signal aviation socket is used for wiring to transmit electrical signals. The electrical signals include control signals and acquisition signals. The power aviation socket is used for wiring to transmit current. The number of the signal aviation socket and the power aviation socket are both 2.

[0026] In this embodiment, refer to Figure 1 A computer 15 and a power supply 14 for supplying power to the equipment components are installed in the test bench 1 . The computer 15 is electrically connected to the data acquisition device 11 and the aviation socket 22 .

[0027] In this embodiment, refer to Figure 2 and Figure 3 The number of the air nozzles 21 is 3, and they are an air inlet nozzle, an air outlet nozzle and an air venting nozzle respectively.

[0028] For specific use, see Figure 1 and Figure 5 The valve 5 of the air pipe part located in the test bench 1 is connected to the air release nozzle for releasing air, and the valve 5 of the air pipe part located in the test box 2 is connected to the external air source.

[0029] In this embodiment, the connection flange 2 and the test box 3 are detachably connected, and the detachable connection method includes but is not limited to screw and pin connection. Preferably, the connection flange 2 and the test box 3 are connected with hexagon socket screws.

[0030] In this embodiment, refer to Figure 1The air storage tank 32 is provided with a third temperature sensor and a third pressure sensor, and the third temperature sensor and the third pressure sensor are electrically connected to the aviation socket 22 .

[0031] Working process of this utility model:

[0032] During the operation of the ultrasonic flowmeter environmental experiment equipment with adjustable ambient temperature and pressure, the air pipe connects the test bench 1, the air nozzle 21 of the connecting flange 2, and the components in the test box 3 to form a loop, so that the gas in the pipeline is isolated from the outside world. The flow of gas in the pipeline is realized by the air pump 33. If it is necessary to introduce gas into the pipeline, it is necessary to open the external air source and the valve 5 of the air pipe located in the test box 3 to allow the gas to enter; if the gas in the pipeline is to be released, it is necessary to open the valve 5 of the air pipe located in the test bench 1 to discharge the gas; during normal testing, the two valves are closed to ensure the air tightness of the pipeline. This design can not only ensure that the test gas does not leak, but also recycle the gas to reduce the test cost. At the same time, the two valves can be used to easily increase or decrease the gas in the pipeline to make the test simpler.

[0033] During the test, the first temperature sensor 13, the first pressure sensor 12, the second temperature sensor 34, and the second pressure sensor 35 connected to the air pipe perform real-time detection of the gas pressure and temperature in the pipe, and the third temperature sensor and the third pressure sensor connected to the gas tank 32 perform real-time detection of the pressure and temperature in the tank. Each temperature sensor and pressure sensor transmits the detected value to the data collector 11 through the wiring harness, and the data collector 11 transmits the collected detection value to the computer 15. The flow information of the flow meter 31 is transmitted to the computer 15. The test staff can observe the data of the entire equipment through the computer 15 and control the flow of the gas in the pipeline. The computer 15 sends the set flow information to the data collector 11, and the data collector 11 sends a control signal to the air pump 33. After the air pump 33 works, the gas in the gas tank 32 flows to the flow meter 31 along the air pipe, so that the gas flow to the flow meter 31 reaches the preset value. At the same time, the data collector 11 collects the speed information of the air pump 33 and sends it to the computer. The speed and working time of the air pump 33 will affect the gas flow to the flow meter.

[0034] In order to ensure that the gas flow generated by the air pump 33 is uniform and stable in the pipeline, a gas storage tank 32 is set in the test box 3. There are 3 temperature sensors and pressure sensors in the entire pipeline to achieve multi-point monitoring and reduce measurement errors.

[0035] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. An ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure, characterized in that: It includes a test bench, a connecting flange, and a test box. A data collector, a first temperature sensor, and a first pressure sensor are installed inside the test bench. The connecting flange is used to connect the test bench and the test box. The connecting flange is provided with an air nozzle and an aviation socket. A second temperature sensor, a second pressure sensor, an air storage tank, a flow meter, and an air pump are provided inside the test box. The flow meter, the air pump, the air storage tank, the air nozzle, the first temperature sensor, and the first pressure sensor are connected by an air pipe to form a closed-loop air circuit. The air pipe is provided with a tee and a valve. The air storage tank, the pressure pump, the flow meter, the second temperature sensor, and the second pressure sensor are all electrically connected to the aviation socket. The first temperature sensor, the first pressure sensor, and the aviation socket are all electrically connected to the data collector.

2. The ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in claim 1, characterized in that: The aviation socket comprises a signal aviation socket and a power aviation socket.

3. The ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in claim 1, characterized in that: A computer and a power supply for supplying power to the equipment components are installed in the test bench. The computer is electrically connected to the data acquisition device and the aviation socket.

4. The ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in claim 1, characterized in that: The number of the air nozzles is 3, which are an air inlet nozzle, an air outlet nozzle and an air vent nozzle respectively.

5. The ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in claim 4, characterized in that: The valve of the air pipe part located in the test bench is connected to the air release nozzle for releasing air, and the valve of the air pipe part located in the test box is connected to an external air source.

6. The ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in claim 1, characterized in that: The connection flange and the test box are detachably connected.

7. The ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in claim 6, characterized in that: The connecting flange and the test box are connected with screws.

8. An ultrasonic flowmeter environmental test equipment with adjustable ambient temperature and pressure as claimed in any one of claims 1 to 7, characterized in that: The gas storage tank is provided with a third temperature sensor and a third pressure sensor, and the third temperature sensor and the third pressure sensor are electrically connected to the aviation socket.

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