Portable air volume measuring instrument

Abstract

The utility model relates to the technical field of air volume measuring instruments, in particular to a portable air volume measuring instrument which comprises a box body and a box cover, a step groove is formed in the inner side of the box body, a pitot tube fixing clamping block, a temperature collecting assembly fixing clamping block and a power module are arranged below the step groove, a testing host is embedded in the step groove, and the rear end of the testing host is connected with the box body in an overturning mode. The inner side of the box cover is provided with a hollow part, and the hollow part is matched with the test host in shape; the test host comprises a microprocessor electrically connected with the power supply module, and a display screen, a host power supply input terminal, a power supply switch, a pitot tube socket and a temperature acquisition socket which are electrically connected with the microprocessor, and the pitot tube socket is connected with a connecting hose for connecting a pitot tube in a pluggable manner; and the temperature acquisition socket is connected with a connecting cable used for connecting the temperature acquisition assembly in a pluggable manner. According to the utility model, all the components are integrated, the equipment and the power supply module are protected, and the portability is improved while various air volume data of the motor train unit can be accurately tested.

Description

Technical Field

[0001] The utility model relates to the technical field of air volume measuring instruments, in particular to a portable air volume measuring instrument. Background Art

[0002] The 160 km / h centralized power EMU is a passenger train jointly developed by CRRC Dalian, CRRC Zhuzhou Locomotive, CRRC Datong and other units under the innovation-driven strategy implemented by China Railway Corporation, aiming at the new trend of world railway technology development, combining the actual needs of China's railway construction and operation, and accelerating the development of China's standard series EMUs. This type of EMU emphasizes the overall plan and system integration technology of the power car, and the requirements for the standardization and interchangeability of parts. The 160 km / h centralized power EMU is divided into short-formation train sets and long-formation train sets. The short-formation train set is 1 power car + 7 trailers + 1 control car, and the long-formation train set is 1 power car + 18 trailers + 1 power car;

[0003] Before this type of EMU is put into use, it is necessary to collect various air volume data and complete the measurement of the fan's wind pressure, air volume, wind speed and wind temperature. The existing air volume measuring instrument has a complex structure and low detection efficiency. Utility Model Content

[0004] The utility model aims to provide a portable wind volume measuring instrument to solve the problems pointed out in the background technology.

[0005] The embodiment of the utility model is realized by the following technical scheme: a portable air volume measuring instrument, comprising a portable box, an openable box cover is arranged on the portable box, a stepped groove is opened inside the portable box, a pitot tube fixing clamp block, a temperature collection component fixing clamp block and a power module are arranged below the stepped groove, a test host is embedded in the stepped groove, the rear end of the test host is connected to the rear side of the portable box through a pivot, a hollow part is opened inside the box cover, and the hollow part is adapted to the shape of the upper surface of the test host;

[0006] The test host includes a microprocessor, a display screen, a host power input terminal, a power switch, a Pitot tube socket and a temperature acquisition socket. The power module, the Pitot tube socket, the temperature acquisition socket, the display screen, the host power input terminal and the power switch are all electrically connected to the microprocessor. The Pitot tube socket is pluggable connected to a connecting hose for connecting the Pitot tube, and the temperature acquisition socket is pluggable connected to a connecting cable for connecting a temperature acquisition component.

[0007] According to a preferred embodiment, the test host further comprises a USB port, and the USB port is electrically connected to the microprocessor.

[0008] According to a preferred embodiment, the test host further comprises a LAN port, and the LAN port is electrically connected to the microprocessor.

[0009] According to a preferred embodiment, the test host further includes a power collection module and a power display module, the power collection module is electrically connected to the power module, and the power collection module is electrically connected to the power display module.

[0010] According to a preferred embodiment, the display screen is arranged in the middle of the upper surface of the test host, the host power input terminal, USB port, LAN port, temperature acquisition socket and Pitot tube socket are arranged on the first side of the display screen, and the power switch and power display module are arranged on the second side of the display screen.

[0011] According to a preferred embodiment, the test host further comprises a printer, and the printer is electrically connected to the microprocessor.

[0012] According to a preferred embodiment, the portable box is integrally formed.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the portable air volume measuring instrument designed by the utility model is provided with a flip-top test host, equipped with a power module and a fixed clamp for fixing relevant test components, integrating various components into one, protecting the equipment and the power module, and can accurately test various air volume data of the EMU while improving portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of a test host of a portable air volume measuring instrument provided in Example 1 of the utility model;

[0015] Figure 2 A schematic diagram of a power module circuit provided in Example 1 of the utility model;

[0016] Icons: 1-box body, 2-box cover, 3-hollow part, 4-display screen, 5-host power input terminal, 6-power switch, 7-USB port, 8-LAN port, 9-power display module, 10-step groove, 11-pivot. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Example 1

[0019] See also Figure 1 As shown, Figure 1 The portable air volume measuring instrument provided by the utility model has a top view of the test host. Specifically, the portable air volume measuring instrument comprises a portable box 1 integrally formed of a high-impact polymer engineering plastic, the portable box 1 is provided with an openable box cover 2, and the box cover 2 is connected to the rear end of the portable box 1 by flipping.

[0020] The portable box 1 has a stepped groove 10 on the inner side, and a pitot tube fixing clamp and a power module are arranged below the stepped groove 10. Figure 2 As shown, the power module includes a lithium battery and a conversion module, which is used to provide a DC24V power supply for the test host, so that no external power supply is required during use, which is convenient for on-site use of the air volume meter for testing. In addition, the power module also reserves a charging interface on the side of the portable box 1 located on the handle, and when the power is insufficient, it can be charged through an external AC220V power supply. In addition, the power module is also connected to a 24V to 5V conversion module for powering LORA.

[0021] The test host is embedded in the stepped groove 10, and its rear end is connected to the rear side of the portable box 1 through a pivot 11. A hollow portion 3 is provided on the inner side of the box cover 2, and the hollow portion 3 is adapted to the shape of the upper surface of the test host so that the test host can be flipped backwards, thereby facilitating the removal of relevant test components from the fixed clamp block below.

[0022] Further specifically, the test host includes a microprocessor, a 10-inch display screen 4, a host power input terminal 5, a power switch 6 and a Pitot tube socket. The power module, the Pitot tube socket, the display screen 4, the host power input terminal 5 and the power switch 6 are all electrically connected to the microprocessor, and the Pitot tube socket is pluggably connected with a connecting hose for connecting the Pitot tube.

[0023] In addition, the test host also includes a temperature acquisition socket, and the temperature acquisition socket is pluggable and connected with a connection cable for connecting the temperature acquisition component, and a temperature acquisition component fixing clamp is also provided under the stepped groove 10. In actual use, first open the test host, take out the L-shaped pitot tube and its matching connecting hose from the bottom of the test host, connect one end of the connecting hose to the temperature acquisition socket on the test host, and the other end to the L-shaped pitot tube, then hold the L-shaped pitot tube and extend it to the middle of the target fan duct and measure the air outlet; in addition, take out the temperature acquisition component and its matching connecting cable from the bottom of the test host, connect one end of the connecting cable to the temperature acquisition socket on the test host, and the other end to the temperature acquisition component, and then use the temperature acquisition component to measure the wind temperature.

[0024] In summary, the technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the portable air volume measuring instrument designed by the utility model is provided with a flip-top test host, equipped with a power module and a fixed clamp for fixing relevant test components, integrating various components into one, protecting the equipment and the power module, and can accurately test various air volume data of the EMU while improving portability.

[0025] In addition, the test host further comprises a USB port 7 and a LAN port 8, and the USB port 7 and the LAN port 8 are both electrically connected to the microprocessor for connecting peripheral auxiliary devices.

[0026] The test host also includes a power collection module and a power display module 9, wherein the power collection module is electrically connected to the power module, and the power collection module is electrically connected to the power display module 9, so as to display the remaining power of the power module in real time through the power display module 9.

[0027] Regarding the layout of the above-mentioned components, in one implementation of this embodiment, the display screen 4 is arranged in the middle of the upper surface of the test host, the host power input terminal 5, USB port 7, LAN port 8, temperature acquisition socket and Pitot tube socket are arranged on the first side of the display screen 4, and the power switch 6 and the power display module 9 are arranged on the second side of the display screen 4.

[0028] In addition, the test host of the portable air volume measuring instrument provided in this embodiment further includes a printer, and the printer is electrically connected to the microprocessor to realize an on-site printing function.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable air volume measuring instrument, comprising a portable housing (1), wherein the portable housing (1) is provided with an openable housing cover (2), characterized in that: The portable case (1) is provided with a stepped groove (10) on the inner side, a pitot tube fixing clamp block, a temperature collection component fixing clamp block and a power module are provided below the stepped groove (10), a test host is embedded in the stepped groove (10), the rear end of the test host is connected to the rear side of the portable case (1) via a pivot (11), a hollow portion (3) is provided on the inner side of the case cover (2), and the hollow portion (3) is adapted to the outer shape of the upper surface of the test host; The test host comprises a microprocessor, a display screen (4), a host power input terminal (5), a power switch (6), a Pitot tube socket and a temperature acquisition socket. The power module, the Pitot tube socket, the temperature acquisition socket, the display screen (4), the host power input terminal (5) and the power switch (6) are all electrically connected to the microprocessor. The Pitot tube socket is pluggably connected to a connecting hose for connecting the Pitot tube, and the temperature acquisition socket is pluggably connected to a connecting cable for connecting a temperature acquisition component.

2. The portable air volume measuring instrument according to claim 1, characterized in that: The test host also includes a USB port (7), and the USB port (7) is electrically connected to the microprocessor.

3. The portable air volume measuring instrument according to claim 2, characterized in that: The test host also includes a LAN port (8), and the LAN port (8) is electrically connected to the microprocessor.

4. The portable air volume measuring instrument according to claim 3, characterized in that: The test host further comprises a power collection module and a power display module (9); the power collection module is electrically connected to the power supply module; and the power collection module is electrically connected to the power display module (9).

5. The portable air volume measuring instrument according to claim 4, characterized in that: The display screen (4) is arranged in the middle of the upper surface of the test host, the host power input terminal (5), USB port (7), LAN port (8), temperature acquisition socket and Pitot tube socket are arranged on a first side of the display screen (4), and the power switch (6) and power display module (9) are arranged on a second side of the display screen (4).

6. The portable air volume measuring instrument according to any one of claims 1 to 5, characterized in that: The test host also includes a printer, and the printer is electrically connected to the microprocessor.

7. The portable air volume measuring instrument according to claim 1, characterized in that: The portable box (1) is integrally formed.

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