A wind measuring device for a wind tunnel of a full wind pressure ventilation type

Abstract

The utility model discloses a full wind pressure ventilation mode wind tube wind measuring device relates to wind tube wind measuring technical field, it includes the steel cylinder, the steel cylinder is equipped with the support framework and reinforces, the steel cylinder top end welds the fixed ring of U shape, and the steel cylinder top end inner wall is installed with the support, and the bottom of support is equipped with the wind measuring board, and is connected through the hinge between support and wind measuring board, the bottom side end of support and wind measuring board is installed respectively with the two magnets of wind tube sensor. Through the built -in lightweight wind measuring board of steel cylinder and magnetic induction structure, effectively solved the hard wind tube ventilation monitoring problem. The device adopts the non - contact magnet detection wind measuring board deflection angle, avoids the problem of the wind resistance increase and the blockage of traditional plug -in sensor, ensures the ventilation efficiency, and simultaneously, its reinforcing support framework and sealing design strengthen the structural stability, is applicable to high wind pressure environment.

Description

Technical Field

[0001] This utility model relates to the field of wind tunnel measurement technology, specifically a wind tunnel measurement device for a full-pressure ventilation system. Background Technology

[0002] In coal mine tunneling ventilation systems, traditional ventilation methods typically employ flexible ventilation ducts in conjunction with GFK18 type ventilation duct sensors for airflow monitoring. This type of sensor, based on the principle of accelerometer tilt detection, is attached to the outer circumference of the flexible duct and senses changes in the duct's diameter to determine the ventilation status. However, with the optimization and upgrading of mine ventilation methods, some tunneling roadways have been adjusted to full-pressure ventilation and have switched to rigid ventilation ducts. Due to the high rigidity of the rigid ventilation duct structure and minimal diameter change, the original GFK18 type sensor can no longer effectively monitor the ventilation status and cannot meet current requirements.

[0003] To address the ventilation monitoring challenges of rigid ducts, existing technologies have attempted to replace them with insertion-type and angle-type duct sensors. However, these solutions have significant drawbacks in practical applications: insertion-type sensors easily increase air resistance, leading to reduced airflow or even duct blockage; angle-type sensors are complex to install and inconvenient for frequent relocation and adjustment. Furthermore, these sensors are prone to falsely triggering no-wind alarms under low airflow conditions, resulting in insufficient reliability and making them unsuitable for the long-term stable monitoring requirements of rigid ducts in full-pressure ventilation environments.

[0004] Therefore, there is an urgent need to develop a new type of ventilation status monitoring device that can be adapted to rigid air ducts under full-pressure ventilation mode, and solve problems such as large air volume loss, easy blockage, false alarms and inconvenient installation and maintenance in the existing technology, so as to ensure the safe and efficient operation of the mine ventilation system. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a wind measurement device for a wind tunnel with full wind pressure ventilation mode, which solves the technical problems mentioned in the background.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a wind measurement device for a wind tunnel in a full-pressure ventilation mode, comprising a steel cylinder, the steel cylinder being reinforced by a supporting frame, a U-shaped fixing ring being welded to the top of the steel cylinder, and a bracket being installed on the inner wall of the top of the steel cylinder, a wind measurement plate being provided at the bottom of the bracket, and the bracket and the wind measurement plate being connected by a hinge, and two magnets of a wind tunnel sensor being installed on the bottom side of the bracket and on the wind measurement plate respectively.

[0009] Preferably, the support frame includes two annular steel rings with a diameter of 1.8 cm, and the two annular steel rings are fitted onto the outer wall of the steel cylinder, and the two annular steel rings are connected to the outer wall of the steel cylinder by fixing claws.

[0010] Preferably, the wind measuring plate is a lightweight acrylic plate, and the length and width dimensions of the wind measuring plate are 40cm*30cm.

[0011] Preferably, the wind measuring plate is located inside the steel cylinder near the center.

[0012] Preferably, the diameter of the steel cylinder is 100cm, and the steel cylinder is connected to the air duct, and the connection between the two ends of the steel cylinder and the air duct is reinforced and sealed.

[0013] Preferably, a horn is installed at the top of the steel cylinder, and the transmission cable of the air duct sensor passes through the horn and connects to the safety monitoring substation.

[0014] (III) Beneficial Effects

[0015] The beneficial effects of this utility model are as follows:

[0016] This all-pressure ventilation duct anemometer device effectively solves the problem of monitoring ventilation in rigid ducts by incorporating a lightweight anemometer plate and magnetic induction structure within a steel cylinder. The device uses a non-contact magnet to detect the deflection angle of the anemometer plate, avoiding the increased wind resistance and blockage problems caused by traditional insertion sensors, thus ensuring ventilation efficiency. Simultaneously, its reinforced support frame and sealed design enhance structural stability, making it suitable for high-pressure environments. The anemometer plate is made of lightweight acrylic, offering high sensitivity and low false alarm rates, and is easy to install and maintain, adapting to frequent mine relocation needs. The overall structure is simple and reliable, accurately monitoring airflow changes and ensuring safe and efficient mine ventilation operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the wind measuring plate of this utility model.

[0019] In the diagram: 1. Steel cylinder, 2. Annular steel ring, 3. Fixing claw, 4. Fixing ring, 5. Bracket, 6. Hinge, 7. Wind measuring plate, 8. Magnet. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figure 1-2 As shown, this utility model provides a technical solution: a wind measurement device for a wind tunnel in a full-pressure ventilation system, including a steel cylinder 1 with a diameter of 100cm, connected to the wind tunnel, with both ends of the steel cylinder 1 reinforced and sealed at the connection points with the wind tunnel. The steel cylinder 1 is reinforced by a supporting frame, which includes two annular steel rings 2 with a diameter of 1.8cm, fitted onto the outer wall of the steel cylinder 1 and connected to the outer wall of the steel cylinder 1 by fixing claws 3, ensuring that the steel cylinder 1 will not deform or be damaged during transportation and installation. A U-shaped fixing ring 4 is welded to the top of the steel cylinder 1, used to fix the steel cylinder 1 to a steel wire rope above the wind tunnel. A bracket 5 is installed on the inner wall of the top of the steel cylinder 1, with a length of 3cm and a width of 0.8cm. A wind measuring plate 7 is provided at the bottom of the bracket 5 for wind measurement. The plate 7 is a lightweight acrylic plate, and the length and width of the wind measuring plate 7 are 40cm*30cm. The bracket 5 and the wind measuring plate 7 are connected by a hinge 6. The wind measuring plate 7 is located in the steel cylinder 1 near the center. Two magnets 8 of the wind duct sensor are respectively installed on the bottom end of the bracket 5 and on the wind measuring plate 7. When the ventilation system is started, when there is wind in the wind duct 1, the wind measuring plate 7 will be moved by the airflow and form an angle. The magnets 8 on the wind measuring plate 7 and the magnets 8 on the bracket 5 will be displaced, and the magnetic attraction state will be changed. At this time, the wind duct sensor shows that there is wind, and the wind volume can be detected by the change in the position of the magnets. When there is no wind in the wind duct 1, the wind measuring plate 7 returns to its original position, the magnetic attraction state of the two magnets 8 does not change, and the wind duct sensor shows that there is no wind. A horn is installed at the top of the steel cylinder 1, and the transmission cable of the wind duct sensor passes through the horn and connects to the safety monitoring substation.

[0022] The operational steps for this application are as follows:

[0023] Connect both ends of the steel cylinder 1 to the rigid air duct, ensuring that the connection is reinforced and sealed to prevent air leakage. Install the lightweight acrylic wind measuring plate 7 at the bottom of the bracket 5 through the hinge 6, ensuring that the wind measuring plate 7 is located inside the steel cylinder 1 near the center. Install two magnets 8 of the air duct sensor on the bottom side of the bracket 5 and the wind measuring plate 7 respectively to form a non-contact detection structure.

[0024] Run the transmission cable of the ventilation duct sensor through the flared end of the steel cylinder 1 and connect it to the safety monitoring substation to ensure stable signal transmission.

[0025] When the ventilation system is activated, and there is airflow inside the ventilation duct 1, the wind measuring plate 7 will be moved by the airflow to form an angle. The magnet 8 on the wind measuring plate 7 and the magnet 8 on the bracket 5 will be displaced, and the magnetic attraction state will be changed. At this time, the ventilation duct sensor will show that there is airflow, and the airflow volume can be detected by the change in the position of the magnet. When there is no airflow inside the ventilation duct 1, the wind measuring plate 7 will return to its original position, the magnetic attraction state of the two magnets 8 will not change, and the ventilation duct sensor will show that there is no airflow.

[0026] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind measurement device for a wind tunnel in a full-pressure ventilation system, characterized in that: The system includes a steel cylinder (1), which is reinforced by a supporting frame. A U-shaped fixing ring (4) is welded to the top of the steel cylinder (1), and a bracket (5) is installed on the inner wall of the top of the steel cylinder (1). A wind measuring plate (7) is provided at the bottom of the bracket (5), and the bracket (5) and the wind measuring plate (7) are connected by a hinge (6). Two magnets (8) of the wind duct sensor are respectively installed on the bottom side of the bracket (5) and on the wind measuring plate (7).

2. The wind measurement device for a full-pressure ventilation duct according to claim 1, characterized in that: The support frame includes two annular steel rings (2) with a diameter of 1.8 cm, and the two annular steel rings (2) are fitted on the outer wall of the steel cylinder (1), and the two annular steel rings (2) are connected to the outer wall of the steel cylinder (1) by fixing claws (3).

3. The wind measurement device for a full-pressure ventilation duct according to claim 1, characterized in that: The wind measuring plate (7) is a lightweight acrylic plate, and the length and width of the wind measuring plate (7) are 40cm*30cm.

4. The wind measurement device for a full-pressure ventilation duct according to claim 1, characterized in that: The wind measuring plate (7) is located inside the steel cylinder (1) near the center.

5. The wind measurement device for a full-pressure ventilation duct according to claim 1, characterized in that: The diameter of the steel cylinder (1) is 100cm, and the steel cylinder (1) is connected to the air duct, and the connection between the two ends of the steel cylinder (1) and the air duct is reinforced and sealed.

6. The wind measurement device for a full-pressure ventilation duct according to claim 1, characterized in that: The top of the steel cylinder (1) is equipped with a horn, and the transmission cable of the air duct sensor passes through the horn and connects to the safety monitoring substation.

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