CN220602580U - Wind speed and wind pressure detection device for air outlet of ventilation duct for tunnel construction - Google Patents
Wind speed and wind pressure detection device for air outlet of ventilation duct for tunnel construction Download PDFInfo
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- CN220602580U CN220602580U CN202322163733.4U CN202322163733U CN220602580U CN 220602580 U CN220602580 U CN 220602580U CN 202322163733 U CN202322163733 U CN 202322163733U CN 220602580 U CN220602580 U CN 220602580U
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000009423 ventilation Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
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- 238000010586 diagram Methods 0.000 description 6
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- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000025518 detection of mechanical stimulus involved in sensory perception of wind Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of tunnel engineering, and particularly relates to a wind speed and wind pressure detection device for an air outlet of a ventilation pipe for tunnel construction. The utility model provides a wind speed wind pressure detection device for tunnel construction ventilation tuber pipe air outlet, includes the connecting rod, connecting rod one end and the fixed ring of preliminary bracing fixedly connected with outer lane, the fixed ring of other end fixedly connected with inner circle in the fixed ring of outer lane, the fixed ring of outer lane and the fixed ring of inner circle between the air outlet end of fixed mounting dryer of air-dryer, be equipped with a plurality of wind speed wind pressure sensors in the fixed ring of inner circle, the fixed ring surface of inner circle is equipped with the data line, the data line electricity is connected with the data acquisition appearance. According to the utility model, the wind outlet section of the wind barrel is stably fixed on the tunnel lining through the outer ring fixing ring and the inner ring fixing ring, so that dust and harmful gas in a tunnel face construction area are prevented from being discharged and settled due to the turbulence of a wind flow field of the wind outlet of the wind pipe, and the wind speed and wind pressure change condition of the wind outlet can be detected in real time by installing a plurality of wind speed and wind pressure sensors on the inner side of the inner ring fixing ring.
Description
Technical Field
The utility model belongs to the technical field of tunnel engineering, and particularly relates to a wind speed and wind pressure detection device for an air outlet of a ventilation pipe for tunnel construction.
Background
The tunnel construction ventilation technology is developed rapidly along with the continuous progress of technology, the scheme of long tunnel short-cut is generally adopted for realizing rapid penetration of the ultra-long railway highway tunnel, the construction distance of some tunnels entering the tunnel through auxiliary tunnels is still long under the scheme, the difficulty is further increased for the challenge of construction ventilation, various high-performance fans are developed at home and abroad mainly for researching and breaking through the aspects of types, quantity, angles and the like of motors and fan blades, the long-distance ventilation is ensured primarily under the combination of the high-performance fans and long-section large-diameter air pipes, various trolley is required to be penetrated to reach the vicinity of the tunnel face construction area after the air pipes enter the tunnel, the distance between the air outlets of the air pipes and the tunnel face is determined to be the minimum return air speed and the good or bad air quality of the tunnel face construction area, the distance between the air outlets of the air pipes and the tunnel face is generally controlled to be 30-50 m, the broken by the broken rubble air pipes generated by blasting easily when the distance between the air pipes and the tunnel face is too close, but the ventilation effect is not ensured at the most important point.
At present, the common inside of a tunnel is to connect a hanging ring at the upper end of an air pipe with a steel wire rope, that is, only one hanging point at the position of an air outlet of the air pipe is connected with a tunnel lining, and when the ventilation condition of the air outlet of the air pipe is detected, 2 persons are usually required to cooperate with a pitot tube and a differential pressure instrument to finish the detection of wind speed and wind pressure. In the process of implementing the embodiment of the present utility model, the inventors have found that at least some of the following problems exist in the background art: (1) The air outlet of the air pipe is connected with the lining of the tunnel body only by one hanging point, and the air flow field of the air outlet is in a turbulent state during normal ventilation, so that the air flow blows along all directions of the tunnel space, and harmful gas and dust in the construction area of the tunnel face are prevented from being discharged outwards, thereby playing an opposite role; (2) The wind flow field at the wind pipe outlet is disordered, the construction environment of the face is poor, and the wind quantity is insufficient for the construction requirement; (3) The wind speed and wind pressure detection flow of the wind outlet of the wind pipe is complex, more than 2 persons are needed to complete the detection, the data of a plurality of points of the cross section of the wind pipe are needed to be measured, the measurement time is long, and the data quantity is small.
Therefore, it is necessary to provide a wind speed and pressure detection device for the air outlet of the ventilation duct in tunnel construction to solve the above problems.
Disclosure of Invention
The utility model aims to provide a wind speed and wind pressure detection device for an air outlet of a ventilation air duct for tunnel construction, which is characterized in that an air outlet section of an air duct is firmly and stably fixed on a tunnel lining through a fixing device formed by combining an outer ring fixing ring and an inner ring fixing ring, so that dust and harmful gas in a tunnel face construction area are prevented from being discharged and settled due to turbulence of an air flow field of the air outlet of the air duct, a plurality of wind speed and wind pressure sensors are arranged on the inner side of the inner ring fixing ring, the wind speed and wind pressure change condition of the air outlet can be detected in real time, the problem that the existing work of long-time multi-frequency detection by a manual instrument is solved, the ventilation effect of the tunnel face construction environment is guaranteed, and a large part of labor cost is saved.
The technical scheme of the utility model is as follows: the utility model provides a wind speed wind pressure detection device for tunnel construction ventilation tuber pipe air outlet, includes the connecting rod, connecting rod one end and preliminary bracing fixed connection, other end fixedly connected with outer lane solid fixed ring, the fixed ring of outer lane intra-annular fixedly connected with inner circle, the air outlet end that fixedly mounted has the dryer between the fixed ring of outer lane and the fixed ring of inner circle, be equipped with a plurality of wind speed wind pressure sensors in the fixed ring of inner circle, the fixed ring surface of inner circle is equipped with the data line, data line one end with wind speed wind pressure sensor electricity is connected, and the other end electricity is connected with the data acquisition appearance.
The outer ring fixed ring is close to one side of the connecting rod and is provided with a fixed steel plate, the fixed steel plate is arc-shaped, a fixed nut A is arranged in the middle of the arc-shaped fixed steel plate, two ends of the arc-shaped fixed steel plate are respectively provided with a fixed nut B, the fixed steel plate is fixedly connected with the connecting rod through the fixed nut A, and the fixed steel plate is fixedly connected with the outer ring fixed ring through the fixed nut B.
The number of the wind speed and wind pressure sensors is 4, the wind speed and wind pressure sensors are respectively a sensor A, a sensor B, a sensor C and a sensor D, the sensor A, the sensor B, the sensor C and the sensor D are uniformly distributed along the clockwise direction of the top of the inner side of the inner ring fixing ring, and the sensor A, the sensor B, the sensor C and the sensor D face the center direction of the inner ring fixing ring.
The diameter of the air duct is L, the length of the rod body of the sensor A is equal to L/8, the length of the rod body of the sensor B is equal to 2L/8, the length of the rod body of the sensor C is equal to 3L/8, the length of the rod body of the sensor D is equal to 4L/8, and the circumferential distance A between adjacent wind speed and wind pressure sensors is equal to L/8.
The data acquisition instrument is arranged on a side wall of the inner side of the primary support, which is 1.5 meters away from the bottom plate, and the connecting rod is welded with the steel arch frame of the primary support.
The outer ring fixing ring is provided with a plurality of cap-free bolts, and the air duct is fixed between the outer ring fixing ring and the inner ring fixing ring through the cap-free bolts.
The utility model has the technical effects that: 1. according to the utility model, the fixing device formed by combining the outer ring fixing ring and the inner ring fixing ring is arranged to firmly and stably fix the air outlet section of the air duct on the tunnel lining, so that dust and harmful gas in a tunnel face construction area are prevented from being discharged and settled due to the turbulence of the air flow field of the air outlet of the air duct; 2. according to the utility model, the wind speed and wind pressure change condition of the wind gap is detected in real time by installing the wind speed and wind speed sensors on the inner side of the inner ring fixing ring, so that the problem of long-time multi-frequency detection work of a traditional manual instrument is solved, the ventilation effect of the working face construction environment is ensured, and a large part of manpower is saved; 3. the utility model has the advantages of simple installation, low processing cost, flexible and convenient data acquisition and good use feedback effect.
Further description will be made below with reference to the accompanying drawings.
Drawings
Fig. 1 is a general layout diagram of a wind speed and pressure detecting device for an air outlet of a ventilation duct for tunnel construction.
Fig. 2 is a longitudinal layout diagram of a wind speed and pressure detecting device for an air outlet of a ventilation duct for tunnel construction.
FIG. 3 is a diagram showing the connection between a wind speed and pressure detection device and a lining for the air outlet of a ventilation duct for tunnel construction.
FIG. 4 is a diagram showing the connection between the wind speed and pressure detecting device and the steel arch for the air outlet of the ventilation duct for tunnel construction.
FIG. 5 is a sensor layout diagram of a wind speed and pressure detection device for an air outlet of a ventilation duct for tunnel construction.
FIG. 6 is a schematic diagram of the sensor connection of the wind speed and pressure detection device for the air outlet of the ventilation duct for tunnel construction.
Reference numerals: 1-primary support; 2-connecting rods; 3-an outer ring fixing ring; 301-fixing a steel plate; 302-fixing the nut A; 303-fixing the nut B; 4-an inner ring fixing ring; 401-data lines; 402-a data acquisition instrument; 5-a wind speed and pressure sensor; 501-sensor a; 502-sensor B; 503-sensor C; 504-sensor D; 6-an air duct; 7-cap-less bolts; 8-steel arch frame.
Description of the embodiments
Embodiment 1 is as shown in fig. 1-6, a wind speed and wind pressure detection device for an air outlet of a ventilation duct for tunnel construction comprises a connecting rod 2, one end of the connecting rod 2 is fixedly connected with an initial support 1, the other end of the connecting rod is fixedly connected with an outer ring fixing ring 3, an inner ring fixing ring 4 is fixedly connected in the outer ring fixing ring 3, an air outlet end of an air duct 6 is fixedly arranged between the outer ring fixing ring 3 and the inner ring fixing ring 4, a plurality of wind speed and wind pressure sensors 5 are arranged in the inner ring fixing ring 4, a data wire 401 is arranged on the surface of the inner ring fixing ring 4, one end of the data wire 401 is electrically connected with the wind speed and wind pressure sensors 5, and the other end of the data wire is electrically connected with a data acquisition instrument 402.
According to the utility model, the fixing device formed by combining the outer ring fixing ring 3 and the inner ring fixing ring 4 is arranged to firmly and stably fix the air outlet section of the air duct 6 on the primary support 1 of the tunnel lining, so that the dust and harmful gas in the tunnel face construction area are prevented from being discharged and settled due to the turbulence of the air flow field at the air outlet of the air duct 6; meanwhile, the wind speed and wind pressure change condition of the wind gap is detected in real time by installing a plurality of wind speed and wind speed sensors 5 on the inner side of the inner ring fixing ring 4, so that the problem of long-time multi-frequency detection work of a traditional manual instrument is solved, the ventilation effect of the face construction environment is ensured, and a large part of manpower is saved; the wind speed and wind pressure sensor 5 is connected with the data acquisition instrument 402 through the data line 401, detected data can be accessed into the intelligent ventilation control system, so that the wind speed and wind pressure data of the air outlet of the air duct 6 can be accurately transmitted to an intelligent ventilation control system platform outside the tunnel in real time, and the data transmission mode can be through wireless transmission or wired transmission, and the data can be received and processed through a PLC (programmable logic controller) outside the tunnel.
Embodiment 2 based on embodiment 1, in this embodiment, preferably, a fixing steel plate 301 is disposed on a side of the outer ring fixing ring 3 close to the connecting rod 2, the fixing steel plate 301 is in a circular arc shape, a fixing nut a302 is disposed in the middle of the circular arc fixing steel plate 301, fixing nuts B303 are respectively disposed at two ends of the circular arc fixing steel plate 301, the fixing steel plate 301 is fixedly connected with the connecting rod 2 through the fixing nuts a302, and the fixing steel plate 301 is fixedly connected with the outer ring fixing ring 3 through the fixing nuts B303.
According to the utility model, the fixed steel plate 301 is arc-shaped, the arc of the arc shape is the same as that of the outer ring fixed ring 3, the fixed nut A302 is arranged in the middle of the arc-shaped fixed steel plate 301, the fixed nuts B303 are respectively arranged at two ends of the arc-shaped fixed steel plate 301, the fixed steel plate 301 is fixedly connected with the connecting rod 2 through the fixed nuts A302, the fixed steel plate 301 is fixedly connected with the outer ring fixed ring 3 through the fixed nuts B303, and the connection and the fastening between the connecting rod 2 and the outer ring fixed ring 3 are ensured.
Embodiment 3 is based on embodiment 1 or embodiment 2, in this embodiment, preferably, the number of wind speed and wind pressure sensors 5 is 4, and the number is respectively a sensor a501, a sensor B502, a sensor C503 and a sensor D504, where the sensors a501, B502, C503 and D504 are uniformly distributed along the clockwise direction of the top inside the inner ring fixing ring 4, and the sensors a501, B502, C503 and D504 are all oriented towards the center direction of the inner ring fixing ring 4.
The number of the wind speed and pressure sensors 5 is 4, namely a sensor A501, a sensor B502, a sensor C503 and a sensor D504, wherein the sensor A501, the sensor B502, the sensor C503 and the sensor D504 are uniformly distributed along the top of the inner side of the inner ring fixing ring 4 in the clockwise direction, and the sensor A501, the sensor B502, the sensor C503 and the sensor D504 face the center direction of the inner ring fixing ring 4, so that the wind speed and pressure value of the air outlet of the air duct 6 is accurately measured.
Embodiment 4 based on embodiment 1 or embodiment 3, in this embodiment, preferably, the diameter of the wind tunnel 6 is L, the length of the shaft of the sensor a501 is equal to L/8, the length of the shaft of the sensor B502 is equal to 2L/8, the length of the shaft of the sensor C503 is equal to 3L/8, the length of the shaft of the sensor D504 is equal to 4L/8, and the circumferential distance a between adjacent wind speed and wind pressure sensors 5 is equal to L/8.
According to the utility model, the diameter of the wind cylinder 6 is L, the length of the rod body of the sensor A501 is equal to L/8, the length of the rod body of the sensor B502 is equal to 2L/8, the length of the rod body of the sensor C503 is equal to 3L/8, the length of the rod body of the sensor D504 is equal to 4L/8, and the circumferential distance A between adjacent wind speed and wind pressure sensors 5 is equal to L/8, so that four wind speed and wind pressure sensors 5 with inconsistent rod body lengths are arranged on the inner side of the inner ring fixing ring 4, and the accurate measurement of the wind speed and wind pressure value of the air outlet of the wind cylinder 6 is ensured.
Embodiment 5 on the basis of embodiment 1 or embodiment 4, in this embodiment, preferably, the data acquisition device 402 is mounted on a side wall 1.5 meters from the bottom plate inside the primary support 1, and the connecting rod 2 is welded to the steel arch 8 of the primary support 1.
According to the utility model, the connecting rod 2 is welded with the steel arch 8 of the primary support 1, and the rod body of the connecting rod 2 is kept in a vertical posture with the lining tangent line of the primary support 1 during welding, so that the connection is ensured to be fastened.
Embodiment 6 on the basis of embodiment 1 or embodiment 5, in this embodiment, preferably, the outer ring fixing ring 3 is provided with a plurality of cap-free bolts 7, and the wind barrel 6 is fixed between the outer ring fixing ring 3 and the inner ring fixing ring 4 by the cap-free bolts 7.
According to the utility model, the outer ring fixing ring 3 is provided with a plurality of cap-free bolts 7, the air duct 6 is fixed between the outer ring fixing ring 3 and the inner ring fixing ring 4 through the cap-free bolts 7, and the air duct is fixed by using the cap-free bolts 7, so that the connection and the disassembly are convenient.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (6)
1. A wind speed wind pressure detection device for tunnel construction ventilation tuber pipe air outlet, its characterized in that: including connecting rod (2), connecting rod (2) one end and preliminary bracing (1) fixed connection, other end fixedly connected with outer lane solid fixed ring (3), fixed ring (4) of fixedly connected with inner circle in outer lane solid fixed ring (3), fixed mounting has the air outlet end of dryer (6) between outer lane solid fixed ring (3) and inner circle solid fixed ring (4), be equipped with a plurality of wind speed wind pressure sensor (5) in inner circle solid fixed ring (4), inner circle solid fixed ring (4) surface is equipped with data line (401), data line (401) one end with wind speed wind pressure sensor (5) electricity is connected, and other end electricity is connected with data acquisition appearance (402).
2. The wind speed and pressure detection device for an air outlet of a ventilation duct for tunnel construction according to claim 1, wherein: the outer ring fixing ring (3) is provided with a fixing steel plate (301) close to one side of the connecting rod (2), the fixing steel plate (301) is arc-shaped, a fixing nut A (302) is arranged in the middle of the arc-shaped fixing steel plate (301), fixing nuts B (303) are respectively arranged at two ends of the arc-shaped fixing steel plate (301), the fixing steel plate (301) is fixedly connected with the connecting rod (2) through the fixing nuts A (302), and the fixing steel plate (301) is fixedly connected with the outer ring fixing ring (3) through the fixing nuts B (303).
3. The wind speed and pressure detection device for an air outlet of a ventilation duct for tunnel construction according to claim 1, wherein: the wind speed and wind pressure sensor (5) is characterized in that the number of the wind speed and wind pressure sensors (5) is 4, namely a sensor A (501), a sensor B (502), a sensor C (503) and a sensor D (504), wherein the sensor A (501), the sensor B (502), the sensor C (503) and the sensor D (504) are uniformly distributed along the clockwise direction of the inner side top of the inner ring fixing ring (4), and the sensor A (501), the sensor B (502), the sensor C (503) and the sensor D (504) are all oriented to the circle center direction of the inner ring fixing ring (4).
4. A wind speed and pressure detection device for an air outlet of a ventilation duct for tunnel construction according to claim 3, wherein: the diameter of the air duct (6) is L, the length of the rod body of the sensor A (501) is equal to L/8, the length of the rod body of the sensor B (502) is equal to 2L/8, the length of the rod body of the sensor C (503) is equal to 3L/8, the length of the rod body of the sensor D (504) is equal to 4L/8, and the circumferential distance A between adjacent wind speed and wind pressure sensors (5) is equal to L/8.
5. The wind speed and pressure detection device for an air outlet of a ventilation duct for tunnel construction according to claim 1, wherein: the data acquisition instrument (402) is arranged on a side wall, which is 1.5 meters away from the bottom plate, of the inner side of the primary support (1), and the connecting rod (2) is welded with the steel arch (8) of the primary support (1).
6. The wind speed and pressure detection device for an air outlet of a ventilation duct for tunnel construction according to claim 1, wherein: the outer ring fixing ring (3) is provided with a plurality of cap-free bolts (7), and the air duct (6) is fixed between the outer ring fixing ring (3) and the inner ring fixing ring (4) through the cap-free bolts (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322163733.4U CN220602580U (en) | 2023-08-11 | 2023-08-11 | Wind speed and wind pressure detection device for air outlet of ventilation duct for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322163733.4U CN220602580U (en) | 2023-08-11 | 2023-08-11 | Wind speed and wind pressure detection device for air outlet of ventilation duct for tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220602580U true CN220602580U (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322163733.4U Active CN220602580U (en) | 2023-08-11 | 2023-08-11 | Wind speed and wind pressure detection device for air outlet of ventilation duct for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220602580U (en) |
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2023
- 2023-08-11 CN CN202322163733.4U patent/CN220602580U/en active Active
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