Mine water level monitoring device with adjustable measuring instrument spacing

Abstract

The utility model discloses a mine water level monitoring device with adjustable measuring instrument spacing, which comprises a mounting plate and a mounting bracket, the mounting bracket is provided with the top end of a fixed pile, the bottom end of the fixed pile is provided with a sliding track, the sliding track is provided with a measuring instrument mounting seat, and a measuring instrument is arranged in the measuring instrument mounting seat. According to the utility model, the sliding track is arranged on the mounting bracket, so that the plurality of measuring instrument mounting seats can move along the sliding track, thereby realizing flexible adjustment of the distance between the measuring instruments, and being capable of monitoring water levels at different positions and with different accuracies in a mine in a complicated and changeable mine environment; therefore, accurate monitoring of all positions can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine surveying instruments, relates to a water level monitoring device, and particularly relates to a mine water level monitoring device with adjustable distance between measuring instruments. Background Technique

[0002] Mine water level monitoring is an important link in mine safety production. It can help us master the water level situation in the mine in real time, so as to effectively prevent safety accidents caused by too high water level. However, due to the complexity and variability of the mine environment, the existing mine water level monitoring devices often cannot meet the actual needs, and mainly have the following defects:

[0003] First, the distance between the measuring instruments used in the existing mine water level monitoring devices is fixed and cannot be adjusted according to actual needs, resulting in a fixed monitoring range. In the face of the complex and changeable mine environment, accurate monitoring of all positions cannot be achieved.

[0004] Second, the measuring accuracy of the measuring instruments used in the existing mine water level monitoring devices is insufficient, and false alarms or missed alarms are likely to occur, which is a major hidden danger for the safety production of the mine.

[0005] Third, the existing mine water level monitoring devices are relatively difficult to operate and maintain, and the cost is relatively high. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a mine water level monitoring device with adjustable distance between measuring instruments, and solve the technical problem that in the existing technology, due to the fixed distance between the measuring instruments, accurate monitoring of all positions in the mine environment cannot be achieved.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions to achieve:

[0008] A mine water level monitoring device with adjustable distance between measuring instruments includes a mounting plate, and a mounting bracket is fixedly installed on the bottom surface of the mounting plate; the mounting bracket includes a bracket frame body, the bracket frame body is a hollow rectangular frame structure, and a plurality of mounting beams are fixedly installed in the bracket frame body, and the mounting beams are arranged along the horizontal direction; a plurality of fixed piles are fixedly installed on the bottom surface of the mounting beam, two fixed piles located in the same longitudinal direction are a pair, the top ends of a pair of fixed piles are fixedly installed on the mounting bracket, the bottom ends of a pair of fixed piles are fixedly installed with a sliding track, and a plurality of sliding tracks are equally spaced in the horizontal direction and the sliding track is arranged along the longitudinal direction; a measuring instrument mounting seat is movably arranged on the sliding track, and the measuring instrument mounting seat is located between the mounting beam and the sliding track.

[0009] On the transverse sides of the measuring instrument mounting base, multiple roller rotating shafts are fixedly installed respectively. Rollers are rotatably installed on the roller rotating shafts. The rollers are located between the mounting beam and the sliding track and do not contact the mounting beam. The rollers are arranged in the sliding track and can roll along the sliding track. A measuring instrument mounting hole is opened at the center of the measuring instrument mounting base. A measuring instrument is installed in the measuring instrument mounting hole. The measuring instrument is arranged vertically downward. The top of the measuring instrument is located below the mounting beam, and the probe at the bottom of the measuring instrument is located below the measuring instrument mounting base.

[0010] The present utility model further has the following technical features:

[0011] A controller and a transmitter are arranged on the longitudinal side of the mounting plate. The controller is connected to the measuring instrument.

[0012] A liquid level alarm is also arranged on the longitudinal side of the mounting plate.

[0013] Compared with the prior art, the present utility model has the following technical effects:

[0014] (Ⅰ) By arranging a sliding track on the mounting bracket in the present utility model, multiple measuring instrument mounting bases can move along the sliding track, so as to realize flexible adjustment of the distance between the measuring instruments. When facing the complex and changeable mine environment, it can monitor the water levels at different positions and with different precisions in the mine, that is, it can realize precise monitoring of all positions.

[0015] (Ⅱ) The present utility model uses an ultrasonic liquid level gauge as the measuring instrument. The ultrasonic liquid level gauge uses piezoelectric ceramics or piezoelectric crystals as the transducer elements to convert electrical energy into mechanical vibration, and then generates ultrasonic waves. The measurement accuracy is high. The receiver receives the ultrasonic wave signal reflected from the surface of the measured liquid and converts it into an electrical signal for subsequent processing. The control circuit controls the emission and reception of ultrasonic waves, records the time difference from the emission to the reception of ultrasonic waves, and calculates the liquid level height according to the sound speed and the time difference. At the same time, it also has a temperature compensation function to correct the influence of the change of sound speed with temperature. The power supply and signal processing circuit provide stable power for the sensor and perform processing such as amplification and filtering on the received electrical signal to improve the measurement accuracy and stability. Since the measurement accuracy is improved, the situations of false alarm or missed alarm can be effectively avoided, thus improving the safety of mine production.

[0016] (Ⅲ) The structure of the present utility model is simple, the installation is convenient, the maintenance is simple, the use cost is low, and the use efficiency is high, thus improving the production efficiency of the mine and reducing the production cost. In addition, due to the adoption of the liquid level alarm, when the monitored water level exceeds the preset safety threshold, the liquid level alarm will give an alarm to remind the staff to take corresponding measures in time, which also further simplifies the maintenance work and reduces the use cost.

[0017] (Ⅳ) The controller of the present utility model can receive and process the water level data collected by the measuring instrument, and display the data to the user in a visual manner. At the same time, it also has the function of adjusting the distance between the measuring instruments, greatly simplifying the operation process and reducing the usage difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a mine water level monitoring device with adjustable distance between measuring instruments.

[0019] Figure 2 It is a schematic diagram of the installation structure of the measuring instrument.

[0020] Figure 3 It is a schematic diagram of the measuring principle of the measuring instrument.

[0021] The meanings of the various reference numerals in the figure are as follows: 1 - mounting plate, 2 - mounting bracket, 3 - fixing pile, 4 - sliding track, 5 - measuring instrument mounting seat, 6 - roller rotating shaft, 7 - roller, 8 - measuring instrument, 9 - controller, 10 - wireless signal transmitter, 11 - liquid level alarm, 12 - shaft.

[0022] 201 - bracket frame body, 202 - mounting beam.

[0023] The following further elaborates on the specific content of the present utility model in conjunction with embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It should be noted that all the components and instruments in the present utility model, without special instructions, are all components and instruments known in the art. For example: the measuring instrument 8 uses a known explosion-proof ultrasonic liquid level gauge in the prior art, also known as an explosion-proof ultrasonic level gauge. The controller 9 uses a conventional controller known in the prior art. The wireless signal transmitter 10 uses a conventional transmitter known in the prior art. The liquid level alarm 11 uses a conventional liquid level alarm known in the prior art.

[0025] The following gives specific embodiments of the present utility model. It should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solution of this application fall within the protection scope of the present utility model.

[0026] Embodiment:

[0027] This embodiment provides a mine water level monitoring device with adjustable distance between measuring instruments, as Figure 1As shown, the mounting bracket 2 includes a bracket frame body 201. The bracket frame body 201 is a hollow rectangular frame structure. Inside the bracket frame body 201, a plurality of mounting beams 202 are fixedly installed. The mounting beams 202 are arranged along the transverse direction. On the bottom surface of the mounting beams 202, a plurality of fixing piles 3 are fixedly installed. Two fixing piles 3 located in the same longitudinal direction form a pair. The top ends of a pair of fixing piles 3 are fixedly installed on the mounting bracket 2, and the bottom ends of a pair of fixing piles 3 are fixedly installed with a sliding track 4. A plurality of sliding tracks 4 are equally spaced in the transverse direction. The sliding track 4 is arranged along the longitudinal direction. A measuring instrument mounting seat 5 is movably arranged on the sliding track 4. The measuring instrument mounting seat 5 is located between the mounting beam 202 and the sliding track 4.

[0028] As Figure 1 and Figure 2 shown, on the transverse sides of the measuring instrument mounting seat 5, a plurality of roller rotating shafts 6 are respectively fixedly installed. On the roller rotating shafts 6, rollers 7 are rotatably installed. The rollers 7 are located between the mounting beam 202 and the sliding track 4 and do not contact the mounting beam 202. The rollers 7 are arranged inside the sliding track 4 and can roll along the sliding track 4. At the center of the measuring instrument mounting seat 5, a measuring instrument mounting hole is provided. Inside the measuring instrument mounting hole, a measuring instrument 8 is installed. The measuring instrument 8 is arranged vertically downward. The top of the measuring instrument 8 is located below the mounting beam 202, and the probe at the bottom of the measuring instrument 8 is located below the measuring instrument mounting seat 5.

[0029] In this embodiment, the mounting bracket 2 is used to support and fix the entire device. The sliding track 4 is arranged on the mounting bracket 2 and is used to provide a moving path for the measuring instrument 8. The measuring instrument 8 is used to monitor the water level change in the mine in real time. By adjusting the position of the measuring instrument mounting seat 5 on the sliding track 4, the flexible adjustment of the spacing of the measuring instrument 8 can be realized, so as to meet the water level monitoring requirements for different positions and different precisions in the mine.

[0030] In this embodiment, the rollers 7 are installed on the roller rotating shafts 6 through conventional bearings known in the prior art.

[0031] As a specific solution of this embodiment, as Figure 1 shown, a controller 9 and a transmitter 10 are arranged on the longitudinal side of the mounting plate 1. The controller 9 is connected to the measuring instrument 8 through a data line or a wireless module.

[0032] In this embodiment, the controller 9 is used to receive and process the water level data collected by the measuring instrument 8. The controller 9 can also display the water level data collected by the measuring instrument 8 to the user in a visual way, so that the user can intuitively understand the water level situation in the mine. The controller 9 is set with a function to adjust the spacing of the measuring instrument 8. The user can conveniently adjust the spacing of the measuring instrument 8 through the controller 9 to adapt to different monitoring requirements.

[0033] As a specific solution of this embodiment, as Figure 1 shown, a liquid level alarm 11 is further provided on the longitudinal side of the mounting plate 1. In this embodiment, when the monitored water level exceeds the preset safety threshold, the liquid level alarm 11 will issue an alarm to remind the staff to take corresponding measures in time, thereby improving the safety of mine production.

[0034] The utility model utilizes an ultrasonic liquid level sensor for distance measurement, and the working principle is as follows:

[0035] The ultrasonic liquid level sensor mainly consists of two parts: a transmitter and a receiver. The transmitter is responsible for emitting ultrasonic signals, while the receiver is responsible for receiving the returned ultrasonic signals and converting them into electrical signals for processing. The working process is as follows: ① Transmitting ultrasonic waves: The transmitter emits a beam of ultrasonic pulses towards the measured object, such as the liquid surface. These ultrasonic pulses propagate in a medium such as air or liquid at a certain speed. ② Propagation and reflection of ultrasonic waves: During the propagation of ultrasonic waves, if they encounter an interface with a large difference in acoustic impedance, such as the interface between liquid and air, reflection will occur. The reflected ultrasonic signal will return to the receiver along the original path. ③ Receiving and processing signals: After the receiver receives the returned ultrasonic signal, it converts it into an electrical signal and performs corresponding processing. By measuring the time difference, that is, the time elapsed from the emission of ultrasonic waves to their reflection and then back to the reception, the distance traveled by the ultrasonic waves in the medium can be calculated. ④ Calculating the liquid level height: Since the propagation speed of ultrasonic waves in a specific medium is known or can be obtained through measurement, it can be calculated and obtained using the following formula Ⅰ:

[0036] d = C i ×△t / 2 Formula Ⅰ.

[0037] In the formula:

[0038] d represents the distance value, that is, the distance from the ultrasonic wave to the liquid surface, unit: m.

[0039] C i represents the propagation speed of ultrasonic waves in the medium, such as C 水 = 1500, C 空气 = 340, unit: m / s.

[0040] △t represents the time difference, unit: s.

[0041] As Figure 3 shown, after calculating the distance from the ultrasonic wave to the liquid surface, by subtracting the distance from the sensor installation position to the bottom of the roadway, the height of the liquid level can be obtained, and it can be specifically calculated and obtained using the following formula Ⅱ:

[0042] h = H - d Formula Ⅱ.

[0043] H represents the reference zero value, that is, the distance from the ultrasonic wave to the bottom of the roadway, unit: m.

[0044] h represents the position of the object, that is, the water level height in the roadway, unit: m.

[0045] The installation process of the present utility model is as follows:

[0046] Step 1, installation of the liquid level gauge:

[0047] Select a suitable position in the mine to ensure that the installation bracket 2 is stable and can support the entire monitoring device. Use special tools to fix the installation bracket 2 at the selected position, ensure that the bracket fits tightly against the mine wall surface without shaking. Then, along the length direction of the installation bracket 2, install the sliding track 4 on the bracket, ensure that the sliding track 4 is parallel to the bracket without inclination, so as to ensure that the measuring instrument mounting seat 5 can slide smoothly. Finally, fix the measuring instrument mounting seat 5 on the sliding track 4, keep an appropriate distance between each mounting seat, and install the water level measuring instrument 8 on each mounting seat to ensure that the sensitive part of the measuring instrument 8 is in good contact with the mine water level.

[0048] Step 2, connection of the controller 9:

[0049] Place the controller 9 in a position that is easy to observe and maintain, and use a data cable or a wireless module to connect the controller 9 to each measuring instrument 8 to ensure the stability and accuracy of data transmission.

[0050] Step 3, power connection and testing:

[0051] Connect the power supply of the device to ensure stable power supply, conduct a power-on test, and check whether each measuring instrument 8 is working properly and whether the data is accurately transmitted to the controller 9.

[0052] The maintenance method of the present utility model is as follows:

[0053] First, regular inspection:

[0054] Conduct a comprehensive inspection at least once a week, including checking the stability of the installation bracket 2, the smoothness of the sliding track, the sensitivity of the measuring instrument 8, etc. Pay special attention to checking the integrity of the cable to avoid data transmission interruption caused by cable damage.

[0055] Second, cleaning and maintenance:

[0056] Regularly clean the sensitive part of the measuring instrument 8 to ensure that the contact surface with the mine water level is clean without impurities. Regularly clean the shell and heat dissipation holes of the control unit to avoid dust accumulation affecting the heat dissipation effect.

[0057] Third, adjust the distance between the measuring instruments 8:

[0058] According to the change of the mine water level and the monitoring requirements, adjust the spacing of the measuring instrument 8 in a timely manner. During the adjustment, ensure that the measuring instrument mounting base 5 slides smoothly on the sliding track 4 to avoid damaging the sliding track 4 or the measuring instrument mounting base 5.

[0059] Fourth, fault troubleshooting and handling:

[0060] When the data of a certain measuring instrument 8 is abnormal, first check whether the wiring and power supply of the measuring instrument 8 are normal. If the problem cannot be solved, the principle analysis method can be used to analyze the cause of the fault, gradually narrow down the fault range until the fault point is found and repaired.

[0061] Fifth, backup and update:

[0062] Regularly back up the data and setting information in the control unit to prevent data loss. Pay attention to the release of new technologies and new products, and update and upgrade the device in a timely manner to improve the accuracy and reliability of monitoring.

[0063] Through the above installation and maintenance methods, the utility model can ensure the long-term stable operation of the mine water level monitoring device with adjustable spacing of the measuring instrument 8, and provide accurate and reliable water level monitoring data for mine production.

Claims

1. A mine water level monitoring device with adjustable measuring instrument spacing, comprising a mounting plate (1), a mounting bracket (2) fixedly mounted on the bottom surface of the mounting plate (1); the mounting bracket (2) comprising a bracket frame (201), the bracket frame (201) being a hollow rectangular frame structure, a plurality of mounting beams (202) fixedly mounted in the bracket frame (201), the mounting beams (202) being arranged along the transverse direction; characterized in that: A plurality of fixed piles (3) are fixedly installed on the bottom surface of the mounting beam (202), two fixed piles (3) located in the same longitudinal direction form a pair, the top ends of the pair of fixed piles (3) are fixedly installed on the mounting bracket (2), a sliding track (4) is fixedly installed on the bottom ends of the pair of fixed piles (3), the plurality of sliding tracks (4) are distributed at equal intervals in the transverse direction, and the sliding track (4) is arranged along the longitudinal direction; a measuring instrument mounting seat (5) is movably arranged on the sliding track (4), and the measuring instrument mounting seat (5) is located between the mounting beam (202) and the sliding track (4); A plurality of roller shafts (6) are fixedly mounted on both lateral sides of the measuring instrument mounting seat (5), and rollers (7) are rotatably mounted on the roller shafts (6). The rollers (7) are located between the mounting beam (202) and the sliding track (4) and do not contact the mounting beam (202). The rollers (7) are arranged in the sliding track (4) and can roll along the sliding track (4). A measuring instrument mounting hole is provided at the center of the measuring instrument mounting seat (5), and a measuring instrument (8) is installed in the measuring instrument mounting hole. The measuring instrument (8) is arranged downward in the vertical direction, and the top of the measuring instrument (8) is located below the mounting beam (202), and the probe at the bottom of the measuring instrument (8) is located below the measuring instrument mounting seat (5).

2. The mine water level monitoring device with adjustable measuring instrument spacing according to claim 1 is characterized in that: A controller (9) and a transmitter (10) are arranged on one longitudinal side of the mounting plate (1), and the controller (9) is connected to the measuring instrument (8).

3. The mine water level monitoring device with adjustable measuring instrument spacing according to claim 1, characterized in that: A liquid level alarm (11) is also provided on one longitudinal side of the mounting plate (1).

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