Mining air duct air volume sensor

Abstract

The utility model discloses a mining air duct air volume sensor which comprises a sensor assembly, a pipeline assembly and an air duct probe rod assembly, the sensor assembly is connected with the air duct probe rod assembly through the pipeline assembly, and the air duct probe rod assembly is fixed on an air duct. The pipeline assembly comprises a corrugated pipe, a first hose and a second hose, wherein the first hose and the second hose are arranged in the corrugated pipe. The air duct feeler lever assembly comprises a mounting plate, a first feeler lever, a second feeler lever and an adapter, the adapter is fixed on the mounting plate, and the top of the first feeler lever and the top of the second feeler lever are both fixed in the adapter; one end of the corrugated pipe is connected with the sensor assembly, and the other end of the corrugated pipe is connected with the adapter. The utility model provides a mining air duct air volume sensor which is simple to install and maintain and accurate in measurement result.

Description

Technical Field

[0001] The utility model relates to an air volume sensor for a mine air duct, belonging to the technical field of coal mine safety monitoring. Background Art

[0002] At present, in coal mine production and environmental control, accurate measurement of the air volume inside the wind duct is crucial to ensure the stability and efficiency of the process. However, traditional air volume measurement methods often have problems such as inconvenient installation, low detection accuracy, and susceptibility to wind duct vibration. In the prior art, the sensor and the wind duct are mostly connected by rigid pipes, which is inconvenient to install and construct. The rigid connection is affected by factors such as wind duct vibration during use, which will lead to inaccurate measurements, and the rigid pipe connection structure is more cumbersome when the wind duct is moved or disassembled. In the prior art, the connecting pipe between the sensor and the wind duct also adopts a single-tube connection structure, but when measuring wind speed, especially in the application scenario of soft wind ducts, the end wind pressure is low, making it difficult to accurately measure the wind speed. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a mine air duct air volume sensor which is simple to install and maintain and has accurate measurement results.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A mine wind tube air volume sensor comprises a sensor assembly, a pipeline assembly and a wind tube probe assembly, wherein the sensor assembly is connected to the wind tube probe assembly through the pipeline assembly, and the wind tube probe assembly is fixed on the wind tube;

[0006] The pipeline assembly includes a bellows and a first hose and a second hose arranged in the bellows;

[0007] The wind tube probe rod assembly comprises a mounting plate, a first probe rod, a second probe rod and an adapter, wherein the adapter is fixed on the mounting plate, and the tops of the first probe rod and the second probe rod are both fixed in the adapter;

[0008] One end of the bellows is connected to the sensor assembly, and the other end of the bellows is connected to the adapter;

[0009] One end of the first hose is connected to the sensor assembly, and the other end of the first hose is fixed in the adapter and communicated with the first probe rod;

[0010] One end of the second hose is connected to the sensor assembly, and the other end of the second hose is fixed in the adapter and communicated with the second probe rod.

[0011] Further, the adapter is provided with a first inner vent nozzle hose clamp and a second inner vent nozzle hose clamp;

[0012] The bottom of the first inner vent nozzle hose clamp is connected to the top of the first probe rod, and the top of the first inner vent nozzle hose clamp is connected to the other end of the first hose;

[0013] The bottom of the second inner vent nozzle hose clamp is communicated with the top of the second probe rod, and the top of the second inner vent nozzle hose clamp is connected to the other end of the second hose.

[0014] Furthermore, lifting ears are provided at both ends of the mounting plate.

[0015] Furthermore, a mounting groove is provided on the mounting plate.

[0016] Furthermore, the sensor assembly includes a shell, a cover plate, a circuit board and a wind cylinder probe, the circuit board is fixed in the shell, the cover plate is fixed on the shell, the top of the wind cylinder probe is fixed to the bottom of the shell, one end of the bellows is connected to the bottom of the wind cylinder probe, and a first ventilation nozzle and a second ventilation nozzle are arranged in the wind cylinder probe, the bottom of the first ventilation nozzle is connected to one end of a first hose, the top of the first ventilation nozzle is connected to a pressure difference sensor, the bottom of the second ventilation nozzle is connected to one end of a second hose, and the top of the second ventilation nozzle is connected to the pressure difference sensor.

[0017] Furthermore, a buzzer is arranged in the shell, and the buzzer is electrically connected to the circuit board.

[0018] Furthermore, an alarm light is arranged at the bottom of the shell, and two alarm lights are arranged on both sides of the wind cylinder probe respectively.

[0019] Furthermore, a handle is provided on the top of the shell.

[0020] Furthermore, an aviation plug is provided on the side wall of the shell.

[0021] By adopting the above technical solution, the sensor assembly and the wind duct probe assembly of the utility model are flexibly connected to reduce vibration and facilitate installation and maintenance. The wind duct probe assembly adopts a double-tube structure, which is inserted into the wind duct to directly measure the differential pressure value generated by the air volume for detection. The technical solution of the utility model can effectively solve the problems of low wind pressure at the end of the soft wind duct and wind duct vibration, with high detection accuracy, easy disassembly and assembly, and strong applicability. The double suspension options of using double hanging ears to fix the suspension on the wind duct wire rope and using flexible rings such as cable ties to surround the wind duct suspension can be fixed for use and convenient to move, which can reduce labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the structure of the mine air volume sensor of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the pipeline assembly and the wind tube probe rod assembly of the utility model;

[0024] Figure 3 It is a top view of the wind tube probe rod assembly of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the sensor assembly of the utility model;

[0026] Figure 5 This is a schematic diagram of the internal structure of the sensor assembly of the utility model;

[0027] Figure 6 This is a schematic diagram of the differential pressure measurement principle of the Pitot tube of the utility model. DETAILED DESCRIPTION

[0028] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0029] like Figure 1 As shown, this embodiment provides a mine wind duct air volume sensor, which includes a sensor component 1, a pipeline component 2 and a wind duct probe assembly 3. The sensor component 1 is connected to the wind duct probe assembly 3 through the pipeline component 2, and the wind duct probe assembly 3 is fixed on the wind duct 4.

[0030] like Figure 2 As shown, the pipeline assembly 2 of this embodiment is a flexible structure, and the pipeline assembly 2 includes a bellows 21 and a first hose 22 and a second hose 23 arranged in the bellows 21. The bellows 21 is made of stainless steel, which can protect the first hose 22 and the second hose 23 inside it. At the same time, the bellows 21 is a flexible structure and can be bent at will. Figure 1 As shown, the wind tube probe rod assembly 3 of this embodiment includes a mounting plate 31, a first probe rod 32, a second probe rod 33 and an adapter 34. The adapter 34 is fixed on the mounting plate 31. The adapter 34 is composed of a base and a cover shell. The base is fixed on the mounting plate 31, and the cover shell is threadedly connected to the base. The tops of the first probe rod 32 and the second probe rod 33 are fixed on the base of the adapter 34 and extend into the cover shell, and the bottoms of the first probe rod 32 and the second probe rod 33 are inserted into the wind tube.

[0031] like Figure 2As shown, one end of the bellows 21 of this embodiment is connected to the sensor assembly 1 through the bellows 21 joint, and the other end of the bellows 21 is connected to the housing of the adapter 34 through the bellows 21 joint. A first inner vent nozzle hose clamp 341 and a second inner vent nozzle hose clamp 342 are arranged in the housing of the adapter 34. The bottom of the first inner vent nozzle hose clamp 341 is connected to the top of the first probe rod 32, and the top of the first inner vent nozzle hose clamp 341 is connected to the other end of the first hose 22; the bottom of the second inner vent nozzle hose clamp 342 is connected to the top of the second probe rod 33, and the top of the second inner vent nozzle hose clamp 342 is connected to the other end of the second hose 23. One end of the first hose 22 is connected to the sensor assembly 1, and the other end of the first hose 22 is plugged into the top of the first inner vent nozzle hose clamp 341 to be connected to the first probe rod 32. One end of the second hose 23 is connected to the sensor assembly 1 , and the other end of the second hose 23 is plugged into the second inner ventilation nozzle hose clamp 342 to communicate with the second probe rod 33 .

[0032] like Figure 4 , 5 As shown, the sensor assembly 1 of the present embodiment includes a shell 11, a cover plate 12, a circuit board 13 and a wind cylinder probe 14, the circuit board 13 is fixed in the shell 11, the cover plate 12 is fixed on the shell 11, the top of the wind cylinder probe 14 is fixed to the bottom of the shell 11, one end of the bellows 21 is connected to the bottom of the wind cylinder probe 14 through the bellows 21 joint, a first ventilation nozzle 15 and a second ventilation nozzle 16 are arranged in the wind cylinder probe 14, the bottom of the first ventilation nozzle 15 is connected to one end of the first hose 22, the top of the first ventilation nozzle 15 is connected to the differential pressure sensor through the hose, the bottom of the second ventilation nozzle 16 is connected to one end of the second hose 23, and the top of the second ventilation nozzle 16 is connected to the differential pressure sensor through the hose.

[0033] When in use, the gas in the air duct enters from the bottom of the first probe rod 32, passes through the first hose 22, and enters one end of the differential pressure sensor from the first ventilation nozzle 15. The other end of the differential pressure sensor is connected to the top of the second ventilation nozzle 16, and the bottom of the second ventilation nozzle 16 is connected to the second probe rod 33 through the second hose 23.

[0034] The first probe rod 32 and the second probe rod 33 are Pitot tubes. The differential pressure measurement principle of the Pitot tubes is as follows: Figure 6 As shown, the first probe rod 32 and the second probe rod 33 are placed in a flow environment with a flow rate of S, and the A port of the first probe rod 32 generates P A Pressure, the B port of the second probe 33 produces P B pressure, the corresponding relationship between flow rate and differential pressure is:

[0035] S=K*(2*(P A -P B) / ρ)1 / 2

[0036] Where K is the Pitot tube structural coefficient; ρ is the fluid density;

[0037] In sensor measurement, the tunnel wind speed can be detected by simply detecting the differential pressure between port A and port B.

[0038] like Figure 3 As shown, the mounting plate 31 of this embodiment is provided with hanging ears 311 at both ends, and is suspended on the steel wire on the wind tube 4 through the hanging ears 311. The mounting plate 31 of this embodiment is provided with a mounting groove 312, which is used for the cable tie to pass through and bind and fix, so that the mounting plate 31 is suspended around the wind tube 4.

[0039] like Figure 5 As shown, a buzzer 17 is disposed in the housing 11 of this embodiment. The buzzer 17 is electrically connected to the circuit board 13 and generates a sound alarm when the wind speed is abnormal.

[0040] like Figure 4 As shown, an alarm light 18 is disposed at the bottom of the housing 11 of this embodiment. Two alarm lights 18 are disposed on both sides of the wind tube probe 14 respectively, and light alarm is performed when the wind speed is abnormal.

[0041] like Figure 4 , 5 As shown, a handle 19 is provided on the top of the housing 11 of this embodiment for easy carrying.

[0042] like Figure 4 , 5 As shown, an aviation plug 100 is provided on the side wall of the housing 11 of this embodiment for connecting power and signal lines.

[0043] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mine air duct air volume sensor, characterized in that: It comprises a sensor assembly (1), a pipeline assembly (2) and a wind tube probe assembly (3); the sensor assembly (1) is connected to the wind tube probe assembly (3) via the pipeline assembly (2); and the wind tube probe assembly (3) is fixed on the wind tube (4); The pipeline assembly (2) comprises a bellows (21) and a first hose (22) and a second hose (23) arranged in the bellows (21); The wind tube probe rod assembly (3) comprises a mounting plate (31), a first probe rod (32), a second probe rod (33) and an adapter (34); the adapter (34) is fixed on the mounting plate (31); the tops of the first probe rod (32) and the second probe rod (33) are both fixed in the adapter (34); One end of the bellows (21) is connected to the sensor assembly (1), and the other end of the bellows (21) is connected to the adapter (34); One end of the first hose (22) is connected to the sensor assembly (1), and the other end of the first hose (22) is fixed in the adapter (34) and communicated with the first probe rod (32); One end of the second hose (23) is connected to the sensor assembly (1), and the other end of the second hose (23) is fixed in the adapter (34) and communicated with the second probe rod (33).

2. The mine air volume sensor according to claim 1, characterized in that: The adapter (34) is provided with a first inner vent nozzle hose clamp (341) and a second inner vent nozzle hose clamp (342); The bottom of the first inner vent nozzle hose clamp (341) is connected to the top of the first probe rod (32), and the top of the first inner vent nozzle hose clamp (341) is connected to the other end of the first hose (22); The bottom of the second inner vent nozzle hose clamp (342) is communicated with the top of the second probe rod (33), and the top of the second inner vent nozzle hose clamp (342) is connected to the other end of the second hose (23).

3. The mine air volume sensor according to claim 1, characterized in that: Lifting ears (311) are provided at both ends of the mounting plate (31).

4. The mine air volume sensor according to claim 1, characterized in that: The mounting plate (31) is provided with a mounting groove (312).

5. The mine air volume sensor according to claim 1, characterized in that: The sensor assembly (1) comprises a housing (11), a cover plate (12), a circuit board (13) and a wind cylinder probe (14); the circuit board (13) is fixed in the housing (11); a differential pressure sensor is arranged on the circuit board (13); the cover plate (12) is fixed on the housing (11); the top of the wind cylinder probe (14) is fixed to the bottom of the housing (11); one end of the bellows (21) is connected to the bottom of the wind cylinder probe (14); a first ventilation nozzle (15) and a second ventilation nozzle (16) are arranged in the wind cylinder probe (14); the bottom of the first ventilation nozzle (15) is connected to one end of a first hose (22); the top of the first ventilation nozzle (15) is connected to the differential pressure sensor; the bottom of the second ventilation nozzle (16) is connected to one end of a second hose (23); and the top of the second ventilation nozzle (16) is connected to the differential pressure sensor.

6. The mine air volume sensor according to claim 5, characterized in that: A buzzer (17) is arranged in the housing (11), and the buzzer (17) is electrically connected to the circuit board (13).

7. The mine air volume sensor according to claim 5, characterized in that: An alarm light (18) is arranged at the bottom of the housing (11), and two alarm lights (18) are arranged on both sides of the wind cylinder probe (14) respectively.

8. The mine air volume sensor according to claim 5, characterized in that: A handle (19) is provided on the top of the housing (11).

9. The mine air volume sensor according to claim 5, characterized in that: An aviation plug (100) is arranged on the side wall of the housing (11).

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