Sensor venting detection fixture

Abstract

The utility model provides a kind of sensor ventilation detection tool, including shell, shell bottom is equipped with bottom plate, the side of bottom plate away from shell is equipped with detachable gas mark cover, and a plurality of equidistance distribution detection hole sites are equipped on bottom plate, gas mark cover is equipped with the accommodating hole site corresponding with detection hole site, and detection hole site and accommodating hole site are fixed with the sensor to be detected ventilation cooperation.The tool adopts integrated design, can simultaneously batch detects multiple sensors, improves detection efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of gas sensor detection devices, specifically to a sensor ventilation detection fixture. Background Technology

[0002] Currently, hazardous gas detection is used in many fields such as petroleum, chemical industry, and metallurgy. Hazardous gas detection is used to detect the content of toxic gases in dangerous places and to trigger an alarm if the level exceeds the standard in order to prevent workers from being poisoned.

[0003] Currently available gas detection alarms all contain internal gas detection sensors. These sensors require validity testing and calibration before use, a process that is time-consuming and labor-intensive, involving cumbersome ventilation operations, signal reading, and recording. Therefore, designing a sensor ventilation detection fixture is essential to address these issues. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this utility model proposes a sensor ventilation detection fixture, which adopts an integrated design and can simultaneously batch-test multiple sensors, thereby improving detection efficiency.

[0005] To achieve the above objectives, the present invention provides a sensor ventilation detection fixture, comprising a housing, a base plate at the bottom of the housing, a detachable standard gas cover on the side of the base plate away from the housing, a plurality of equally spaced detection holes on the base plate, and receiving holes on the standard gas cover corresponding to the detection holes. The detection holes and receiving holes cooperate to fix the sensor to be tested for ventilation.

[0006] Furthermore, a solenoid valve is provided on one side of the housing. The solenoid valve is used to connect to an external gas supply device to control the opening and closing of the gas supply.

[0007] Furthermore, a gas flow meter is provided on the side of the housing away from the solenoid valve, which is used to read the ventilation flow information.

[0008] Furthermore, the housing is equipped with a switching power supply for power supply, and a main control circuit board for electrical connection with the gas flow meter and solenoid valve.

[0009] Furthermore, a support plate is provided on the side of the base plate facing the gas hood, and a receiving groove for accommodating the sensor extends from the side of the support plate away from the base plate. The receiving groove and the receiving hole fix the two ends of the sensor respectively.

[0010] Furthermore, the standard gas hood includes a hood body and a cover shell. The receiving hole is provided on the hood body, and the bottom of the receiving hole is open. The cover shell is located on the side of the hood body away from the bottom plate. The side of the hood body facing the cover shell is provided with a sealing groove surrounding the outer periphery of the opening of the receiving hole, and a sealing ring is provided in the sealing groove.

[0011] The sensor ventilation detection fixture of this invention adopts an integrated design, which can simultaneously batch test multiple sensors, thus improving the detection efficiency. Attached Figure Description

[0012] The present invention will be further described and explained below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the sensor ventilation detection fixture of the preferred embodiment of this utility model.

[0014] Figure 2 This is a cross-sectional view of the sensor ventilation detection fixture.

[0015] Figure 3 This is an exploded view of the side of the sensor ventilation detection fixture.

[0016] Figure 4 It was an explosion at the bottom of the sensor ventilation detection fixture. Figure 1 .

[0017] Figure 5 It was an explosion at the bottom of the sensor ventilation detection fixture. Figure 2 .

[0018] Reference numerals in the attached drawings: 1. Housing; 11. Base plate; 111. Detection hole; 12. Support plate; 121. Receiving groove; 2. Standard gas cover; 21. Cover body; 22. Cover shell; 23. Receiving hole; 24. Sealing groove; 25. Sealing ring; 3. Solenoid valve; 4. Gas flow meter; 5. Switching power supply; 6. Main control circuit board. Detailed Implementation

[0019] The technical solution of this utility model will be more clearly and completely explained below with reference to the accompanying drawings and through the description of the preferred embodiments of this utility model.

[0020] like Figure 1 and Figure 2 As shown, the sensor ventilation detection fixture of the preferred embodiment of this utility model includes a hollow housing 1, a bottom plate 11 at the bottom of the housing 1, and a detachable standard gas cover 2 on the side of the bottom plate 11 facing away from the housing 1. Figure 4 As shown, the base plate 11 is provided with a plurality of equally spaced detection holes 111, which in this embodiment are 20 in 4 rows and 5 columns. The standard gas cover 2 is provided with receiving holes 23 corresponding to the detection holes 111. The detection holes 111 and the receiving holes 23 cooperate to fix the sensor to be tested for airflow.

[0021] like Figure 1 and Figure 3As shown, a solenoid valve 3 is provided on one side of the housing 1. The solenoid valve 3 is used to connect to an external gas supply device to control the opening and closing of the gas supply. The solenoid valve 3 is connected to the standard gas hood 2 through a gas pipeline and supplies gas to the standard gas hood 2. A gas flow meter 4 is provided on the side of the housing 1 opposite to the solenoid valve 3. The gas flow meter 4 is used to read the ventilation flow information. Both the solenoid valve 3 and the gas flow meter 4 are mature models in the existing technology.

[0022] like Figure 1 and Figure 3 As shown, the housing 1 is equipped with a switching power supply 5 for power supply, using a 220V to 24V switching power supply 5 to power the entire system circuit. The housing 1 also houses a main control circuit board 6 for electrical connection with the gas flow meter 4 and the solenoid valve 3. This circuit board uses an NXP LPC1752 series chip, a microcontroller based on the ARM Cortex-M3 core, with abundant built-in resources sufficient to meet the functional requirements of the entire system. The circuit structure of the main control circuit board 6 includes a main control detection module, a signal output module, a gas distribution module, and a power supply module. The main control detection module converts the gas concentration signal detected by the sensor into an electrical signal and transmits it to the signal output module, which then transmits it to an external computer for calibration and detection.

[0023] like Figure 1 and Figure 4 As shown, a support plate 12 is provided on the side of the base plate 11 facing the gas hood 2. The side of the support plate 12 away from the base plate 11 extends out to accommodate a sensor in a receiving groove 121. The receiving groove 121 and the receiving hole 23 fix the two ends of the sensor respectively.

[0024] like Figure 4 and Figure 5 As shown, the calibration gas hood 2 includes a hood body 21 and a housing 22. A receiving hole 23 is provided on the hood body 21, and the bottom of the receiving hole 23 is open. The housing 22 is located on the side of the hood body 21 facing away from the base plate 11. A sealing groove 24 is provided on the side of the hood body 21 facing the housing 22, surrounding the outer periphery of the opening of the receiving hole 23. A sealing ring 25 is provided in the sealing groove 24. This allows for ventilation within the calibration gas hood 2, enabling simultaneous detection of the installed sensors.

[0025] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications, substitutions, and improvements made by those skilled in the art to the technical solutions of the present invention based on the provided description and drawings, without departing from the design concept and spirit of the present invention, should all fall within the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

Claims

1. A sensor ventilation detection fixture, characterized in that, The device includes a housing, a bottom plate at the bottom of the housing, a detachable gas calibration cover on the side of the bottom plate away from the housing, a plurality of equally spaced detection holes on the bottom plate, and receiving holes on the gas calibration cover corresponding to the detection holes. The detection holes and receiving holes cooperate to fix the sensor to be tested for ventilation.

2. The sensor ventilation detection fixture according to claim 1, characterized in that, A solenoid valve is provided on one side of the housing. The solenoid valve is used to connect to an external gas supply device and to control the opening and closing of the gas supply.

3. The sensor ventilation detection fixture according to claim 2, characterized in that, A gas flow meter is provided on the side of the housing away from the solenoid valve, and the gas flow meter is used to read the ventilation flow information.

4. The sensor ventilation detection fixture according to claim 3, characterized in that, The housing is equipped with a switching power supply for power supply, and a main control circuit board for electrical connection with the gas flow meter and solenoid valve.

5. The sensor ventilation detection fixture according to claim 1, characterized in that, The base plate has a support plate on the side facing the gas hood, and the side of the support plate away from the base plate extends into a receiving groove to accommodate the sensor. The receiving groove and the receiving hole fix the two ends of the sensor, respectively.

6. The sensor ventilation detection fixture according to claim 5, characterized in that, The standard gas hood includes a hood body and a cover shell. The receiving hole is provided on the hood body, and the bottom of the receiving hole is open. The cover shell is provided on the side of the hood body away from the bottom plate. The side of the hood body facing the cover shell is provided with a sealing groove surrounding the outer periphery of the opening of the receiving hole, and a sealing ring is provided in the sealing groove.

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