CN217735578U - Mine ventilation resistance monitoring devices - Google Patents
Mine ventilation resistance monitoring devices Download PDFInfo
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- CN217735578U CN217735578U CN202221960533.0U CN202221960533U CN217735578U CN 217735578 U CN217735578 U CN 217735578U CN 202221960533 U CN202221960533 U CN 202221960533U CN 217735578 U CN217735578 U CN 217735578U
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- hose
- ventilation resistance
- air door
- air
- steel pipe
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Abstract
The utility model discloses a mine ventilation resistance monitoring device, wherein a ventilation resistance measuring device is arranged on a drift section air door, a steel pipe is horizontally hoisted on the drift section air door, and two ends of the steel pipe are respectively arranged on an air inlet lane air door and an air return lane air door; the hose is sleeved in the steel pipe; the U-shaped differential pressure gauge and the pressure sensor are both arranged on the tee joint, one end of the U-shaped differential pressure gauge is communicated with the air inlet lane air door through a hose, and the other end of the U-shaped differential pressure gauge is communicated with the air return lane air door through a hose; the pressure sensor is connected with the hose; the control system is connected with the pressure sensor. The utility model arranges the hose in the horizontally arranged steel pipe, which ensures the normal ventilation of the hose; the ventilation resistance at two ends is received through the hose, the relative pressure difference at two ends of the air door in the air inlet and return tunnel is measured through the U-shaped and pressure sensors, a looped network relative pressure measuring mode is formed, and the ventilation resistance distribution conditions of a mine, a mining area and a working face can be reflected visually.
Description
Technical Field
The utility model relates to a colliery ventilation technical field specifically is a mine ventilation resistance monitoring devices.
Background
The mine ventilation resistance measurement work is one of important contents of ventilation safety technical management, and aims to know the distribution condition of mine ventilation resistance and provide a basis for goaf pressure-equalizing fire prevention and ventilation system simulation work with a through roadway. The authenticity and timeliness of the ventilation resistance measurement data directly influence the scientificity and rationality of mine ventilation safety management decisions.
The traditional ventilation resistance measuring method is divided into a differential pressure meter method and an air pressure meter method, the air pressure meter method is divided into a point-by-point measuring method and a double-measuring-point simultaneous measuring method, and no matter which method is adopted, the method can be completed by a large amount of manpower and time investment, and the method is not beneficial to daily dynamic analysis of the change of the ventilation resistance distribution of the mine.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: the mine ventilation resistance monitoring device is simple in structure and convenient to measure.
In order to solve the technical problem, the utility model provides a following technical scheme:
a mine ventilation resistance monitoring device comprises a ventilation resistance measuring device and a control system;
the ventilation resistance measuring device is arranged on an air door of a roadway section and comprises a U-shaped differential pressure meter, a pressure sensor, a tee joint, a hose and a steel pipe;
the steel pipe is horizontally hung on the air door of the roadway section, and two ends of the steel pipe are respectively arranged on the air door of the air inlet roadway and the air door of the air return roadway;
the hose is sleeved in the steel pipe; the U-shaped differential pressure gauge and the pressure sensor are both arranged on the tee joint, one end of the U-shaped differential pressure gauge is communicated with the air inlet lane air door through a hose, and the other end of the U-shaped differential pressure gauge is communicated with the air return lane air door through a hose; the pressure sensor is connected with the hose;
the control system is connected with the pressure sensor.
The advantages are that: the utility model arranges the hose in the horizontally arranged steel pipe, which ensures the normal ventilation of the hose; the ventilation resistance at two ends is received through the hose, the relative pressure difference at two ends of the air door in the air inlet and return connecting roadway is measured through the U-shaped and pressure sensors, a looped network relative pressure measuring mode is formed, and the distribution conditions of the ventilation resistance of a mine, a mining area and a working face can be reflected visually. The utility model discloses simple structure can reflect the distribution of mine ventilation resistance well.
Preferably, the heights of the two ports of the steel pipe are consistent, and the vent is perpendicular to the direction of the wind flow.
Preferably, the hose uses a polyurethane hose for compressed air.
Preferably, the pressure sensor adopts GPD200A, and the measuring range is-25 Kpa to 5Kpa.
Preferably, the measuring range of the U-shaped differential pressure gauge is +/-3000 pa.
Preferably, the control system adopts KJ218X coal mine safety monitoring system WEB software.
Preferably, the intelligent control system further comprises a display screen, and the display screen is connected with the control system.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a hose receives the ventilation resistance at both ends to measure the relative pressure difference in inlet and return air allies oneself with the interior air door both ends in lane through U type differential pressure gauge and pressure sensor, saved on-the-spot manual computation link, and other data need not measure, can monitor the ventilation resistance value that personnel can directly read out corresponding mine, district, working face on the scene, the utility model discloses simple structure, with the conventional both ends in the inlet and return phoenix lane respectively set up a pressure sensor and compare, arrange measurement station quantity also less in the pit, can measure more simply, reduced monitoring personnel's intensity of labour.
Drawings
Fig. 1 is an installation schematic of an embodiment of the present invention;
in the figure: 1. a ventilation resistance measuring device; 11. a U-shaped differential pressure gauge; 12. a pressure sensor; 13. a tee joint; 14. a hose.
Detailed Description
In order to facilitate the technical solutions of the present invention to be understood by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, the present embodiment discloses a mine ventilation resistance monitoring device, which includes a ventilation resistance measuring device 1 and a control system (not shown).
The ventilation resistance measuring device 1 is installed at the air door of the drift section, and air gravitational potential energy needs to be deducted because the air door of the inclined drift section is influenced by the height difference of the air door, so the ventilation resistance measuring device 1 of the embodiment must be selected at the air door of the drift section.
The ventilation resistance measuring device 1 comprises a U-shaped differential pressure gauge 11, a pressure sensor 12, a tee joint 13 and a hose 14; the U-shaped differential pressure gauge 11 and the pressure sensor 12 are both arranged on a tee joint 13, one end of the U-shaped differential pressure gauge 11 is communicated with an air inlet lane air door through a hose 14, and the other end of the U-shaped differential pressure gauge 11 is communicated with an air return lane air door through a hose 14; the pressure sensor 12 is connected to a hose 14.
According to the ventilation resistance network structure of the mine, the positions and the number of the air doors which accord with the actual condition of the mine are selected to install the device. In principle, 1 representative group of air doors is selected on the coal face, and 1-2 representative groups of air doors are selected in the mining area.
When the hose 14 is installed, it is protected by a through-wall tubing (not shown) inside which the hose 14 is placed. And when the device is arranged, the heights of two ports of the pipeline are consistent, and the air vents are vertical to the air flow direction of the roadway. The steel pipe of this embodiment is hung on gallery section air door horizontally.
The control system is connected to a pressure sensor 12. The control system is connected to a mine monitoring system, and the functions of on-line monitoring and intelligent analysis of mine ventilation resistance are preliminarily realized. The control system is provided with a display screen for monitoring the ventilation resistance distribution condition of the whole mine network, and the ventilation resistance of the maximum resistance route is not monitored singly. Monitoring personnel can know the resistance distribution condition of the mine ventilation system in real time, provide a basis for simulation work of the ventilation system with goaf pressure equalization and fire prevention and roadway through, and provide basic data and parameters for optimization and reasonable air distribution of the mine ventilation system.
The control system is internally provided with a standard value and a state value change floating range, and reasonably sets an alarm value of the differential pressure sensor, and if the change floating value exceeds 30% of the standard value in the embodiment, the control system gives an alarm to remind monitoring personnel to find and process in time.
Meanwhile, a monitoring department is responsible for installation and maintenance of the equipment system; and (4) comparing the ventilation multi-parameter detector with the U-shaped differential pressure gauge 11 by field measurement every fifteen days in the ventilation area, and adjusting if the monitoring value error of the pressure sensor 12 exceeds the range.
According to the embodiment, the hose 14 and the U-shaped differential pressure gauge 11 are arranged, so that mechanical errors are reduced, workers can directly read out ventilation resistance values of corresponding mines, mining areas and working surfaces on site, the site manual calculation link is omitted, and management of a ventilation system is facilitated.
The hose 14 of this embodiment is a polyurethane hose for compressed air, the measurement range of the U-shaped differential pressure gauge 11 is ± 3000pa, the pressure sensor 12 is GPD200 (a), the measurement range is-25 to 5Kpa, and the control system is KJ218X WEB software of a coal mine safety monitoring system.
Monitoring personnel can directly read out the ventilation resistance values of corresponding mines, mining areas and working faces on site, so that the link of manual calculation on site is omitted, and the ventilation system management is facilitated. The relative pressure difference of the two ends of the air door in the air inlet and return tunnel is only required to be measured, other data are not required to be measured, the mine ventilation resistance monitoring device is formed by direct conversion, and the ventilation resistance distribution conditions of a mine, a mining area and a working face are reflected more simply and intuitively.
Compared with the conventional pressure sensors arranged at two ends in the inlet and return-to-phoenix roadway, the underground measuring points are less in number, so that the underground measuring points can be measured more simply, and the labor intensity of monitoring personnel is reduced.
The working principle of the embodiment is as follows: the ventilation resistance measuring device 1 of the embodiment is arranged at the pressure difference of two ends of an air door in a representative air inlet and return joint lane, the pressure at the air inlet and return joint lane is respectively received through hoses 14 on two sides, the pressure difference at two ends is measured through a U-shaped pressure difference meter 11 and a pressure sensor 12, a measuring signal is transmitted to a control system, the control system displays the pressure difference signal on a display screen after receiving a corresponding signal, and monitoring personnel can know the distribution condition of ventilation resistance in a mine according to information on the display screen.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.
Claims (7)
1. A mine ventilation resistance monitoring device which characterized in that: comprises a ventilation resistance measuring device (1) and a control system;
the ventilation resistance measuring device (1) is arranged on an air door of a roadway section and comprises a U-shaped differential pressure meter (11), a pressure sensor (12), a tee joint (13), a hose (14) and a steel pipe;
the steel pipe is horizontally hung on the air door of the roadway section, and two ends of the steel pipe are respectively arranged on the air door of the air inlet roadway and the air door of the air return roadway;
the hose (14) is sleeved in the steel pipe; the U-shaped differential pressure gauge (11) and the pressure sensor (12) are both arranged on a tee joint (13), one end of the U-shaped differential pressure gauge (11) is communicated with an air inlet roadway air door through a hose (14), and the other end of the U-shaped differential pressure gauge is communicated with an air return roadway air door through a hose (14); the pressure sensor (12) is connected with a hose (14);
the control system is connected with a pressure sensor (12).
2. The mine ventilation resistance monitoring device of claim 1, wherein: the heights of the two ports of the steel pipe are consistent, and the vent is vertical to the direction of the wind flow.
3. The mine ventilation resistance monitoring device of claim 1, wherein: the hose (14) is a polyurethane hose for compressed air.
4. The mine ventilation resistance monitoring device of claim 1, wherein: the pressure sensor (12) adopts GPD200A, and the measuring range is-25 Kpa to 5Kpa.
5. The mine ventilation resistance monitoring device of claim 1, wherein: the measuring range of the U-shaped differential pressure meter (11) is +/-3000 pa.
6. The mine ventilation resistance monitoring device of claim 1, wherein: the control system adopts KJ218X coal mine safety monitoring system WEB software.
7. The mine ventilation resistance monitoring device of claim 1, wherein: the display screen is connected with the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221960533.0U CN217735578U (en) | 2022-07-26 | 2022-07-26 | Mine ventilation resistance monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221960533.0U CN217735578U (en) | 2022-07-26 | 2022-07-26 | Mine ventilation resistance monitoring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217735578U true CN217735578U (en) | 2022-11-04 |
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ID=83850313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221960533.0U Active CN217735578U (en) | 2022-07-26 | 2022-07-26 | Mine ventilation resistance monitoring devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217735578U (en) |
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2022
- 2022-07-26 CN CN202221960533.0U patent/CN217735578U/en active Active
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