CN220101349U - Negative pressure monitoring alarm device for main fan of vertical shaft - Google Patents
Negative pressure monitoring alarm device for main fan of vertical shaft Download PDFInfo
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- CN220101349U CN220101349U CN202321609355.1U CN202321609355U CN220101349U CN 220101349 U CN220101349 U CN 220101349U CN 202321609355 U CN202321609355 U CN 202321609355U CN 220101349 U CN220101349 U CN 220101349U
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- main fan
- proximity switch
- pressure gauge
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 15
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 230000000007 visual effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
The utility model relates to the technical field of negative pressure monitoring of a main fan of a vertical shaft, in particular to a negative pressure monitoring alarm device of the main fan of the vertical shaft. In order to solve the problems that the traditional vertical main fan negative pressure monitoring method is easy to cause large workload of monitoring personnel and lower in safety level, the novel vertical main fan negative pressure monitoring alarm device is provided, and comprises a first U-shaped pressure gauge, two proximity switch sensors, an alarm and a metal buoy sensing piece, wherein one side pipe orifice of the first U-shaped pressure gauge is open, the other side pipe orifice is used for being communicated with a negative pressure pipe orifice of a corresponding main fan, the two proximity switch sensors are respectively arranged horizontally up and down, the sensing heads of the two proximity switch sensors are respectively propped against two end value positions of a negative pressure allowing area of a side glass pipe with the open pipe orifice of the first U-shaped pressure gauge, and the two proximity switch sensors are electrically connected with the alarm. The device reduces the workload of monitoring personnel and realizes negative pressure automatic alarm.
Description
Technical Field
The utility model relates to the technical field of negative pressure monitoring of a main fan of a vertical shaft, in particular to a negative pressure monitoring alarm device of the main fan of the vertical shaft.
Background
The main vertical fan mainly plays a role in main ventilation tasks of the mine, and has the main function of supplying enough fresh air underground to meet the requirement of personnel on oxygen; toxic and harmful gas and dust in the well are diluted, so that safe production is ensured; and the underground climate is regulated, and a good working environment is created. The change of the negative pressure of the main fan of the vertical shaft during operation can directly influence the air quantity of all working surfaces and roadways in the pit, and the change of the air pressure in the pit such as finger palm is needed to create a good and safe working environment in the pit. The negative pressure is a gas pressure state lower than normal pressure, the absolute pressure of wind flow is smaller than the absolute pressure of the same elevation outside the well or the wind cylinder, the relative pressure is negative, the negative pressure is called, and whether the underground ventilation system works normally can be known by monitoring the underground negative pressure change, so that the accurate monitoring of the change of the negative pressure of the main fan of the vertical well is particularly important.
The existing device for monitoring the negative pressure of the main fan of the vertical shaft is a U-shaped pressure gauge suspended in a machine room, when the negative pressure is normal, two liquid levels of the U-shaped pressure gauge are generally stable or slightly fluctuant, if the negative pressure value of the U-shaped pressure gauge is suddenly increased, roof falling or other blocking accidents can occur in a main ventilation roadway, ventilation resistance is increased, and if the negative pressure value of the U-shaped pressure gauge is suddenly reduced, a main air door for controlling a ventilation system can be opened, or other wind flow short-circuit accidents and main fan abnormality can occur, so that the ventilation resistance is reduced. The traditional vertical main fan negative pressure monitoring method mainly relies on monitoring staff to frequently observe negative pressure values on a U-shaped pressure gauge in a machine room, the working amount of the monitoring staff is large, and when the change of the vertical main fan negative pressure is abnormal, if the monitoring staff does not find out at the first time, serious mine safety accidents can be possibly caused, and the safety level is low.
Disclosure of Invention
The utility model aims to solve the problems that the traditional method for monitoring the negative pressure of the main fan of the vertical shaft is easy to cause large workload of monitoring personnel and lower safety level, and provides a novel device for monitoring and alarming the negative pressure of the main fan of the vertical shaft.
The utility model is realized by adopting the following technical scheme:
the main fan negative pressure monitoring alarm device comprises at least one main fan, each main fan is matched with a set of negative pressure monitoring alarm component, each set of negative pressure monitoring alarm component comprises a first U-shaped pressure gauge, two proximity switch sensors and an alarm, a metal float sensing piece which can be sensed by the corresponding proximity switch sensor when passing through any one of the proximity switch sensors and can float on the liquid level when liquid is injected into a glass tube of the first U-shaped pressure gauge, a tube orifice on one side of the first U-shaped pressure gauge is opened, a tube orifice on the other side of the first U-shaped pressure gauge is used for being communicated with a negative pressure tube orifice of the corresponding main fan, two proximity switch sensors are respectively arranged horizontally up and down, sensing heads of the two proximity switch sensors respectively abut against two end value positions of a negative pressure allowed region of the glass tube on one side of the opening of the first U-shaped pressure gauge (as known by a person skilled in the art, the negative pressure allowed region is a negative pressure normal value up and down floating by 100Pa, if the negative pressure normal value is Pa, the two end values of the negative pressure allowed region are 2100Pa and 2300 Pa), and the two proximity switch sensors are electrically connected with the alarm sensor 2200.
When the device is used, liquid (generally injected liquid is water) is injected into a pipe orifice at one side of the first U-shaped pressure gauge until the liquid level is 0 scale mark, a metal float sensing piece is also lifted to the 0 scale mark, the pipe orifice at the other side of the first U-shaped pressure gauge is communicated with a negative pressure pipe orifice of a corresponding main fan, when negative pressure is generated and the negative pressure is normal, the liquid level moves downwards from the 0 scale mark to a negative pressure normal scale mark under the action of the negative pressure, at the moment, two proximity switch sensors are respectively positioned at positions of 2100Pa and 2300Pa which are respectively positioned above and below a negative pressure normal value, and the metal float sensing piece is positioned between the two proximity switch sensors; when a high negative pressure state occurs, the metal float sensing piece moves downwards to pass through the proximity switch sensor positioned at the lower part, and the alarm gives out an alarm signal to indicate that roof fall or other blocking accidents possibly occur in the ventilation roadway, so that an operator on duty should make corresponding emergency check and report the situation to the ore deposit dispatching room rapidly, and serious accidents are prevented; when the low negative pressure state occurs, the metal float sensing piece moves upwards to pass through the proximity switch sensor positioned at the upper part, and the alarm gives out an alarm signal, so that the situation that the underground air quantity is in an air leakage position or the main fan is abnormal is indicated, and on duty personnel should make emergency check of the corresponding ventilation system and report the situation to the ore deposit dispatching room rapidly, so that serious accidents are prevented.
The beneficial effects of the utility model are as follows: the main fan negative pressure monitoring alarm device for the vertical shaft has good effect since the main fan negative pressure monitoring alarm device is tested in the vertical shaft, and can immediately alarm and remind the attention as long as any main fan negative pressure value is abnormally changed, so that the working amount of monitoring staff is reduced, and the negative pressure automatic alarm is realized, and mine safety accidents caused by the fact that the monitoring staff does not observe the negative pressure value abnormality in the first time are avoided; meanwhile, the device can give an alarm for abnormal shutdown in the operation of the main fan, and the main fan is stopped and finally reacts on the change of the negative pressure value, so that the device can be used as an alarm for abnormal shutdown of the main fan.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
In the figure: 1-a first U-shaped pressure gauge, 2-a proximity switch sensor, 3-a metal buoy sensing piece, 4-a second U-shaped pressure gauge, 5-a three-way pipe, 6-an alarm display controller and 7-a main fan.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be made. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the description, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the utility model.
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the main fans 7 are at least one, each main fan 7 is matched with a set of negative pressure monitoring alarm assembly, each set of negative pressure monitoring alarm assembly comprises a first U-shaped pressure gauge 1, two proximity switch sensors 2, an alarm, a metal float sensor 3 which can be sensed by the corresponding proximity switch sensor 2 when passing through any one of the proximity switch sensors 2 and can float on the liquid level when liquid is injected into the glass tube of the first U-shaped pressure gauge 1, one side tube orifice of the first U-shaped pressure gauge 1 is open, the other side tube orifice is used for communicating with the negative pressure tube orifice of the corresponding main fan 7, the two proximity switch sensors 2 are respectively arranged horizontally up and down, the sensing heads of the two proximity switch sensors are respectively propped against two end value positions of the negative pressure allowing region of the side glass tube of the first U-shaped pressure gauge 1 (as known by a person skilled in the art, the negative pressure allowing region is a normal value up and down floating 100Pa, if the negative pressure value is Pa, the two end values of the negative pressure allowing region are Pa, and the two end values of the negative pressure allowing region are Pa, 2200Pa and the two end values are connected with the alarm 2100 and electrically connected with the alarm 2100.
When the device is used, liquid (generally injected liquid is water) is injected into a pipe orifice at one side of the first U-shaped pressure gauge 1 until the liquid level is 0 scale mark, the metal float sensing piece 3 also rises to the 0 scale mark, the pipe orifice at the other side of the first U-shaped pressure gauge 1 is communicated with a negative pressure pipe orifice corresponding to the main fan 7, when negative pressure is applied and the negative pressure is normal, the liquid level moves downwards from the 0 scale mark to the negative pressure normal scale mark under the action of the negative pressure, at the moment, the two proximity switch sensors 2 are respectively positioned at positions of 2100Pa and 2300Pa above and below the negative pressure normal value, and the metal float sensing piece 3 is positioned between the two proximity switch sensors 2; when a high negative pressure state occurs, the metal float sensing piece 3 moves downwards to pass through the proximity switch sensor 2 positioned at the lower part, and the alarm gives out an alarm signal to indicate that roof fall or other blocking accidents possibly occur in the ventilation roadway, so that an operator on duty should make corresponding emergency check and report the situation to the ore deposit dispatching room rapidly, and serious accidents are prevented; when the low negative pressure state occurs, the metal float sensing piece 3 moves upwards to pass through the proximity switch sensor 2 positioned at the upper part, and the alarm sends out an alarm signal, so that the situation that the underground air quantity is in an air leakage position or the main fan 7 is abnormal is indicated, and on duty personnel should make emergency check of a corresponding ventilation system and report the situation to the ore deposit dispatching room rapidly, so that major accidents are prevented.
In specific implementation, each set of negative pressure monitoring alarm assembly further comprises a second U-shaped pressure gauge 4, wherein a pipe orifice at one side of the second U-shaped pressure gauge 4 is opened, and a pipe orifice at the other side is used for being communicated with a negative pressure pipe orifice of the main fan 7 (the pipe orifice at the other side of the first U-shaped pressure gauge 1 and the pipe orifice at the other side of the second U-shaped pressure gauge 4 are communicated with the negative pressure pipe orifice of the main fan 7). The second U-shaped pressure gauge 4 is a standby U-shaped pressure gauge, so that the mine negative pressure can be conveniently monitored by a traditional negative pressure monitoring method when the first U-shaped pressure gauge 1 and the proximity switch sensor 2 fail, and the safety coefficient is improved.
In the concrete implementation, the pipe orifice at the other side of the second U-shaped pressure gauge 4, the pipe orifice at the other side of the first U-shaped pressure gauge 1 and the negative pressure pipe orifice of the main fan 7 of each set of negative pressure monitoring alarm assembly are mutually communicated through the three-way pipe 5, and the connecting structure is concrete and standardized.
In the specific implementation, the alarm is two audible and visual alarms and is respectively electrically connected with the two proximity switch sensors 2, so that an operator on duty can rapidly distinguish whether the alarm is low negative pressure alarm or high negative pressure alarm.
When the alarm device is used for specific implementation, when two alarm devices give an alarm, one alarm device flashes as a yellow light and gives out alarm sound and corresponding negative pressure abnormal display, and the other alarm device flashes as a red light and gives out alarm sound and corresponding negative pressure abnormal display, so that a person on duty can more quickly distinguish whether the alarm device gives out low negative pressure alarm or high negative pressure alarm, and countermeasures can be timely made. In actual use, both alarms may also be integrated in one general alarm display controller 6.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Although described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and they should be construed as covering the scope of the appended claims.
Claims (5)
1. The vertical main fan negative pressure monitoring alarm device is characterized in that each main fan (7) is provided with a set of negative pressure monitoring alarm component in a matched mode, each set of negative pressure monitoring alarm component comprises a first U-shaped pressure gauge (1), two proximity switch sensors (2), an alarm, a metal float sensing piece (3) which can be sensed by the corresponding proximity switch sensor (2) when the alarm passes through any one of the proximity switch sensors (2) and can float on the liquid level when liquid is injected into a glass tube of the first U-shaped pressure gauge (1), one side tube orifice of the first U-shaped pressure gauge (1) is opened, the other side tube orifice is communicated with a negative pressure tube orifice of the corresponding main fan (7), the two proximity switch sensors (2) are respectively arranged up and down horizontally, sensing heads of the two proximity switch sensors are respectively propped against two end value positions of a negative pressure allowed region of one side glass tube of the opening of the first U-shaped pressure gauge (1), and the two proximity switch sensors (2) are electrically connected with the alarm.
2. The negative pressure monitoring and alarming device of the vertical main fan according to claim 1, wherein each set of negative pressure monitoring and alarming assembly further comprises a second U-shaped pressure gauge (4), one side pipe orifice of the second U-shaped pressure gauge (4) is open, and the other side pipe orifice is used for communicating with the negative pressure pipe orifice of the main fan (7).
3. The negative pressure monitoring and alarming device of the main fan of the vertical shaft according to claim 2, wherein the pipe orifice on the other side of the second U-shaped pressure gauge (4) of each set of negative pressure monitoring and alarming assembly, the pipe orifice on the other side of the first U-shaped pressure gauge (1) and the negative pressure pipe orifice of the main fan (7) are mutually communicated through a three-way pipe (5).
4. A main vertical fan negative pressure monitoring alarm device according to claim 1, 2 or 3, characterized in that the alarm is two audible and visual alarms and is electrically connected with two proximity switch sensors (2) respectively.
5. The negative pressure monitoring alarm device of the vertical main fan according to claim 4, wherein when two alarms give an alarm, one alarm is a yellow lamp flashing and giving an alarm sound and corresponding negative pressure abnormal display, and the other alarm is a red lamp flashing and giving an alarm sound and corresponding negative pressure abnormal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321609355.1U CN220101349U (en) | 2023-06-25 | 2023-06-25 | Negative pressure monitoring alarm device for main fan of vertical shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321609355.1U CN220101349U (en) | 2023-06-25 | 2023-06-25 | Negative pressure monitoring alarm device for main fan of vertical shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220101349U true CN220101349U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321609355.1U Active CN220101349U (en) | 2023-06-25 | 2023-06-25 | Negative pressure monitoring alarm device for main fan of vertical shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220101349U (en) |
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2023
- 2023-06-25 CN CN202321609355.1U patent/CN220101349U/en active Active
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