阅读说明：本技术 一种煤矿泵房吸水井煤泥深度与液位高度检测装置及方法 (Coal slurry depth and liquid level height detection device and method for water suction well of coal mine pump room ) 是由 艾小锐 左东升 张也 于 2021-06-21 设计创作，主要内容包括：本发明涉及一种煤矿泵房吸水井煤泥深度与液位高度检测装置及方法,该装置包括可编程控制箱、轮辐式称重传感器、压力传感器、防水接线盒、信号变送器、滤芯、橡胶薄膜、环氧板、高头手拧螺钉；所述环氧板固定在防水接线盒内底部上,所述轮辐式称重传感器固定在环氧板上；所述滤芯置于防水接线盒内的入水口处,所述的高头手拧螺钉将轮辐式称重传感器的螺纹孔相配合,所述橡胶薄膜固定在防水接线盒顶部,所述压力传感器固定在防水接线盒侧壁上。与现有技术相比,本发明具有测量精确高效、安全性高等优点。(The invention relates to a coal slurry depth and liquid level height detection device and a method for a suction well of a coal mine pump room, wherein the device comprises a programmable control box, a spoke type weighing sensor, a pressure sensor, a waterproof junction box, a signal transmitter, a filter element, a rubber film, an epoxy plate and a high-head hand-screwed screw; the epoxy plate is fixed on the bottom in the waterproof junction box, and the spoke type weighing sensor is fixed on the epoxy plate; the filter core is arranged at a water inlet in the waterproof junction box, the high-head hand-screwed screws match with threaded holes of the spoke type weighing sensors, the rubber film is fixed at the top of the waterproof junction box, and the pressure sensor is fixed on the side wall of the waterproof junction box. Compared with the prior art, the method has the advantages of high measurement accuracy, high efficiency, high safety and the like.)

1. A coal mine pump house suction well coal slime depth and liquid level height detection device is characterized by comprising a programmable control box (1), a spoke type weighing sensor (2), a pressure sensor (3), a waterproof junction box (4), a signal transmitter (5), a filter element (6), a rubber film (7), an epoxy plate (9) and a high-head hand-screwed screw (10);

the epoxy plate (9) is fixed on the bottom in the waterproof junction box (4), and the spoke type weighing sensor (2) is fixed on the epoxy plate (9); the filter element (6) is arranged at a water inlet in the waterproof junction box (4), the high-head hand-screwed screw (10) is used for matching with a threaded hole of the spoke type weighing sensor (2), the rubber film (7) is fixed at the top of the waterproof junction box (4), and the pressure sensor (3) is fixed on the side wall of the waterproof junction box (4);

the input end of the signal transmitter (5) is respectively connected with a signal wire of the spoke type weighing sensor (2) and a signal wire of the pressure sensor (3), and the output end of the signal transmitter (5) is respectively connected with a power supply wire of the spoke type weighing sensor (2), a power supply wire of the pressure sensor (3) and an analog input terminal of the programmable control box (1).

2. The coal mine pump house suction well coal slime depth and liquid level height detection device as claimed in claim 1, wherein the side wall of the water junction box (4) is provided with an opening which is provided as a water inlet.

3. The coal mine pump house suction well coal slime depth and liquid level height detection device as claimed in claim 1, wherein a plane of one end of the high-head hand screw (10) with a straight groove is flush with the surface of the waterproof junction box (4).

4. The coal mine pump house suction well coal slime depth and liquid level height detection device as claimed in claim 1, wherein the top of the waterproof junction box (4) is provided with an opening, and the opening is larger than one end plane of the high-head hand screw (10) with a straight groove.

5. The coal mine pump house suction well coal slime depth and liquid level height detection device as claimed in claim 1, wherein the side wall of the waterproof junction box (4) is provided with an opening for fixing the pressure sensor (3).

6. The coal mine pump house suction well coal slime depth and liquid level height detection device of claim 1, characterized in that the device further comprises a rubber ring (8) for fastening the pressure sensor (3).

7. The coal mine pump house suction well coal slime depth and liquid level height detection device as claimed in claim 1, wherein said programmable control box (1) is a mining explosion-proof and intrinsic safety type programmable control box.

8. The coal mine pump house suction well coal slime depth and liquid level height detection device as claimed in claim 1, wherein said programmable control box (1) comprises a power module and a programmable controller PLC, wherein the programmable controller PLC is provided with an Ethernet interface, an RS-485 communication interface, an RS-232 communication interface, an analog quantity interface and a digital quantity interface.

9. The detection method of the coal mine pump house suction well coal slime depth and liquid level height detection device based on the claim 1 is characterized by comprising the following steps:

step S01, placing the waterproof junction box (4) at the bottom of a water suction well of the underground pump room of the coal mine, and enabling one surface of the waterproof junction box (4) with the threaded hole of the spoke type weighing sensor (2) to be parallel to the bottom of the water suction well of the underground pump room of the coal mine;

step S02, connecting a 24V power output of a programmable control box (1) with a power input end of a signal transmitter (5), connecting an analog quantity input port of the programmable control box (1) with a signal output port of the signal transmitter (5), connecting a power output end of the signal transmitter (5) with power supply lines of a pressure sensor (3) and a spoke type weighing sensor (2) respectively, and connecting a signal input end of the signal transmitter (5) with signal lines of the pressure sensor (3) and the spoke type weighing sensor (2) respectively;

s03, the programmable control box (1) calculates the coal slurry depth H2 according to the signals collected by the spoke type weighing sensor (2) processed by the signal transmitter (5);

and S04, outputting the coal slurry depth H2 to an upper computer of a mine management room through an Ethernet interface or an RS-485 or RS-232 communication interface of the programmable control box (1), and outputting a control signal through a switching value interface to send out a warning to inform a coal mine manager to carry out dredging treatment when the coal slurry depth H2 exceeds an upper limit value.

10. The detection method of the coal mine pump house suction well coal slime depth and liquid level height detection device based on the claim 1 is characterized by comprising the following steps:

step S01, placing the waterproof junction box (4) at the bottom of a water suction well of the underground pump room of the coal mine, and enabling one surface of the waterproof junction box (4) with the threaded hole of the spoke type weighing sensor (2) to be parallel to the bottom of the water suction well of the underground pump room of the coal mine;

step S02, connecting a 24V power output of a programmable control box (1) with a power input end of a signal transmitter (5), connecting an analog quantity input port of the programmable control box (1) with a signal output port of the signal transmitter (5), connecting a power output end of the signal transmitter (5) with power supply lines of a pressure sensor (3) and a spoke type weighing sensor (2) respectively, and connecting a signal input end of the signal transmitter (5) with signal lines of the pressure sensor (3) and the spoke type weighing sensor (2) respectively;

step S03, the programmable control box (1) calculates the hydraulic pressure p of the position of the waterproof junction box (4) according to the signal collected by the pressure sensor (3) processed by the signal transmitter (5)_{Water (W)}The height H1 ═ p of the liquid level of the suction well is known according to the underwater pressure formula_{Water (W)}/ρ_{Water (W)}g；

And S04, outputting the liquid level height H1 to an upper computer of a mine management room through an Ethernet interface or an RS-485 or RS-232 communication interface of the programmable control box (1), and outputting a control signal to control a water outlet of a suction well of a pump room or send an alarm to inform a coal mine manager to process when the liquid level height H1 exceeds an upper limit value.

Technical Field

The invention relates to the field of coal mine drainage detection, in particular to a coal slurry depth and liquid level height detection device and method for a water suction well of a coal mine pump room.

Background

In the prior art, the depth of water and the depth of sludge are calculated by putting down a heavy hammer and recording the length of the heavy hammer immersed in water, or the depth of water and the depth of sludge are measured by dragging the heavy hammer by a motor instead of manually putting the heavy hammer. However, the prior art measures the depth of the sludge by heavy manpower or unreliable mechanical movement, cannot avoid people to operate the equipment, adds an unsafe factor, and cannot measure the depth and the height of the liquid level of the sludge in the current state in real time due to inevitable characteristics of a mechanical structure.

Through retrieval, Chinese patent 201911375577.X discloses a device and a method for detecting the depth of sludge in a suction well of a pump room under a coal mine, wherein one end of a cable is fixed on a roller, the other end of the cable is connected with a heavy hammer, and the heavy hammer does lifting motion when a motor drives the roller to rotate; the mining explosion-proof and intrinsic safety type programmable control box is adopted to calculate the falling length of the heavy hammer and the pulling force applied to the cable according to the information collected by the encoder and the mining intrinsic safety type pulling force sensor, and the depth of the sludge is calculated according to the calculated falling length of the heavy hammer and the pulling force applied to the cable; the device has safe explosion-proof structure and succinct efficient drive mechanism, and job stabilization is reliable, and the fault rate is low. However, the mechanical structure adopted in the prior art has time delay, low safety, complex disassembly and difficult maintenance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the device and the method for detecting the depth and the liquid level height of the coal slime of the suction well of the coal mine pump room, which can automatically detect the depth and the liquid level height of the coal slime for a long time and improve the safety of a mine.

The purpose of the invention can be realized by the following technical scheme:

according to one aspect of the invention, the invention provides a coal slurry depth and liquid level height detection device for a suction well of a coal mine pump room, which comprises a programmable control box, a spoke type weighing sensor, a pressure sensor, a waterproof junction box, a signal transmitter, a filter element, a rubber film, an epoxy plate and a high-head hand screw;

the epoxy plate is fixed on the bottom in the waterproof junction box, and the spoke type weighing sensor is fixed on the epoxy plate; the filter element is arranged at a water inlet in the waterproof junction box, the high-head hand-screwed screw is used for matching with a threaded hole of the spoke type weighing sensor, the rubber film is fixed at the top of the waterproof junction box, and the pressure sensor is fixed on the side wall of the waterproof junction box;

the input end of the signal transmitter is respectively connected with a signal wire of the spoke type weighing sensor and a signal wire of the pressure sensor, and the output end of the signal transmitter is respectively connected with a power supply wire of the spoke type weighing sensor, a power supply wire of the pressure sensor and an analog quantity input terminal of the programmable control box.

Preferably, the side wall of the water junction box is provided with an opening, and the opening is provided with a water inlet.

As a preferable technical scheme, the plane of one end of the high-head hand-screwed screw with the straight groove is flush with the surface of the waterproof junction box.

Preferably, the top of the waterproof junction box is provided with an opening, and the size of the opening is larger than that of one end plane of a straight groove of a high-head hand-screwed screw.

As a preferable technical scheme, the side wall of the waterproof junction box is provided with an opening for fixing the pressure sensor.

Preferably, the device further comprises a rubber ring for fastening the pressure sensor.

As a preferred technical scheme, the programmable control box is a mining explosion-proof and intrinsic safety type programmable control box.

As a preferred technical scheme, the programmable control box comprises a power module and a programmable controller PLC, wherein the programmable controller PLC is provided with an Ethernet interface, an RS-485 communication interface, an RS-232 communication interface, an analog quantity interface and a digital quantity interface.

According to another aspect of the invention, a detection method based on the coal slurry depth and liquid level height detection device of the coal mine pump room suction well is provided, and the detection method comprises the following steps:

step S01, placing the waterproof junction box at the bottom of the water suction well of the underground pump house of the coal mine, and enabling one surface of the waterproof junction box with the threaded hole of the spoke type weighing sensor to be parallel to the bottom of the water suction well of the underground pump house of the coal mine;

step S02, connecting the 24V power output of the programmable control box with the power input end of the signal transmitter, connecting the analog input end of the programmable control box with the signal output end of the signal transmitter, connecting the power output end of the signal transmitter with the power supply lines of the pressure sensor and the spoke type weighing sensor respectively, and connecting the signal input end of the signal transmitter with the signal lines of the pressure sensor and the spoke type weighing sensor respectively;

step S03, the programmable control box calculates the coal slurry depth H2 according to the signals collected by the spoke type weighing sensor after being processed by the signal transmitter;

and S04, outputting the coal slurry depth H2 to an upper computer of a mine management room through an Ethernet interface or an RS-485 or RS-232 communication interface of a programmable control box, and outputting a control signal through a switching value interface to send out a warning to inform a coal mine manager to carry out dredging treatment when the coal slurry depth H2 exceeds an upper limit value.

According to another aspect of the invention, a detection method based on the coal slurry depth and liquid level height detection device of the coal mine pump room suction well is provided, and the detection method comprises the following steps:

step S01, placing the waterproof junction box at the bottom of the water suction well of the underground pump house of the coal mine, and enabling one surface of the waterproof junction box with the threaded hole of the spoke type weighing sensor to be parallel to the bottom of the water suction well of the underground pump house of the coal mine;

step S02, connecting the 24V power output of the programmable control box with the power input end of the signal transmitter, connecting the analog input end of the programmable control box with the signal output end of the signal transmitter, connecting the power output end of the signal transmitter with the power supply lines of the pressure sensor and the spoke type weighing sensor respectively, and connecting the signal input end of the signal transmitter with the signal lines of the pressure sensor and the spoke type weighing sensor respectively;

step S03, the programmable control box processes the signal according to the signal transmitterThe hydraulic pressure p of the position of the waterproof junction box is calculated by signals acquired by the pressure sensor_{Water (W)}The height H1 ═ p of the liquid level of the suction well is known according to the underwater pressure formula_{Water (W)}/ρ_{Water (W)}g；

And S04, outputting the liquid level height H1 to an upper computer of a mine management room through an Ethernet interface or an RS-485 or RS-232 communication interface of the programmable control box, and outputting a control signal to control a water outlet of a suction well of the pump room or send an alarm to inform a coal mine manager to process when the liquid level height H1 exceeds an upper limit value.

Compared with the prior art, the invention has the following advantages:

1) measuring the liquid level height and the sludge height through the matching of a weighing sensor and a hydraulic sensor;

1) the long-term reliability of detection can be improved by placing the electric device containing the sensor at the bottom of the sludge pool to replace the traditional mechanical structure;

2) the system has a safe explosion-proof structure and high-efficiency data measurement, can work stably and reliably for a long time, and has accurate measurement data;

3) the depth and the liquid level height of the sludge are monitored in real time, unmanned detection is realized, and the safety of the underground operation is improved;

4) the invention adopts a complete electrification device, and the energy consumption is less than that of the traditional mechanical structure.

Drawings

FIG. 1 is a front view of the apparatus of the present invention;

fig. 2 is a schematic structural diagram of the device in actual operation.

Wherein 1 is a programmable control box, 2 is a spoke type weighing sensor, 3 is a pressure sensor, 4 is a waterproof junction box, 5 is a signal transmitter, 6 is a filter element, 7 is a rubber film, 8 is a rubber ring, 9 is an epoxy plate, 10 is a high-head hand-screwed screw, 11 is a pan-head self-tapping screw, and 12 is a countersunk self-tapping screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Example 1

As shown in fig. 1, which is a front view of the device of the present invention, the device includes a spoke type weighing sensor 2, a pressure sensor 3, a waterproof junction box 4, a filter element 6, a rubber film 7, a rubber ring 8, an epoxy plate 9, and a high-head hand screw 10; epoxy board 9 passes through crew cut self tapping screw to be fixed on the bottom in waterproof terminal box 4, and spoke formula weighing sensor 2 passes through pan head self tapping screw to be fixed on epoxy board 9, and trompil on waterproof terminal box 4 lateral wall, this hole set up to the water inlet, arranges filter core 6 in waterproof terminal box 4 water inlet department, prevents in silt gets into waterproof terminal box 4. The high-head hand-screwed screw 10 is matched with a threaded hole of the spoke type weighing sensor 2, so that the plane of one end of the high-head hand-screwed screw 10 with the straight groove is flush with the surface of the waterproof junction box 4. The top of the waterproof junction box 4 is provided with a hole, the size of the hole is slightly larger than that of one end plane of the high-head hand screw 10 with a straight groove, and the threaded hole is connected with the high-head screw, so that the top of the screw is flush with the cover of the waterproof junction box 4. The rubber film 7 is fixed on the top of the waterproof junction box 4, and the rubber film 7 is fastened on the top of the waterproof junction box 4 through a rectangular pressing strip on the top. And a hole is formed in the side wall of the waterproof junction box 4, the pressure sensor 3 is fixed on the side wall of the waterproof junction box 4, and the rubber ring 8 is used for fastening the thread of the pressure sensor and a welding nut.

Fig. 2 is a schematic diagram of the structure of the device in actual operation. The input end of the signal transmitter 5 is connected with signal lines of the 24V power supply, the spoke type weighing sensor 2 and the pressure sensor 3, and the output end of the signal transmitter 5 is connected with power supply lines of the spoke type weighing sensor 2 and the pressure sensor 3 and an analog quantity input terminal of the mining explosion-proof and intrinsic safety type programmable control box 1. The mining explosion-proof and intrinsic safety type programmable control box 1 is composed of a power module and a programmable controller PLC, wherein the programmable controller PLC is provided with an Ethernet interface, an RS-485 communication interface/RS-232 communication interface, an analog quantity interface and a digital quantity interface.

Example 2

A detection method of a coal mine pump room suction well coal slime depth and liquid level height detection device comprises the following steps:

step S01, the waterproof junction box is arranged at the bottom of the water suction well of the underground pump house of the coal mine, and the surface of the waterproof junction box with the threaded hole of the spoke type weighing sensor is parallel to the bottom of the water suction well of the underground pump house of the coal mine;

step S02, connecting the 24V power output of the mining explosion-proof and intrinsic safety type programmable control box with the power input end of a signal transmitter, connecting the analog quantity input port of the mining explosion-proof and intrinsic safety type programmable control box with the signal output port of the signal transmitter, connecting the power output end of the signal transmitter with the power supply lines of a pressure sensor and a spoke type weighing sensor, and connecting the signal input end of the signal transmitter with the signal lines of the pressure sensor and the spoke type weighing sensor;

s03, the mining explosion-proof and intrinsic safety type programmable control box calculates the coal slurry depth H2 according to the 0-5V signal output by the spoke type weighing sensor

S04, outputting the coal slurry depth H2 to an upper computer of a mine management room through an Ethernet interface or an RS-485 or RS-232 communication interface of a mining explosion-proof and intrinsic safety type programmable control box, and outputting a control signal through a switching value interface to send out a warning to inform a coal mine manager to carry out desilting treatment when the coal slurry depth H2 exceeds an upper limit value;

example 3

A detection method of a device for detecting the liquid level height of a suction well of a pump house under a coal mine well comprises the following steps:

step S01, the waterproof junction box is arranged at the bottom of the water suction well of the underground pump house of the coal mine, and the surface of the waterproof junction box with the threaded hole of the spoke type weighing sensor is parallel to the bottom of the water suction well of the underground pump house of the coal mine;

step S02, connecting the 24V power output of the mining explosion-proof and intrinsic safety type programmable control box with the power input end of a signal transmitter, connecting the analog quantity input port of the mining explosion-proof and intrinsic safety type programmable control box with the signal output port of the signal transmitter, connecting the power output end of the signal transmitter with the power supply lines of a pressure sensor and a spoke type weighing sensor, and connecting the signal input end of the signal transmitter with the signal lines of the pressure sensor and the spoke type weighing sensor;

step S03, the mining explosion-proof and intrinsic safety type programmable control box calculates the hydraulic pressure p of the position of the waterproof junction box according to the signal collected by the pressure sensor processed by the signal transmitter_{Water (W)}The height H1 ═ p of the liquid level of the suction well is known according to the underwater pressure formula_{Water (W)}/ρ_{Water (W)}g；

And S04, outputting the liquid level height H1 to an upper computer of a mine management room through an Ethernet interface or an RS-485 or RS-232 communication interface of the mining explosion-proof and intrinsic safety type programmable control box, and outputting a control signal to control a water outlet of a suction well of the pump room or send an alarm to inform a coal mine manager to process when the liquid level height H1 exceeds an upper limit value.

According to the invention, the liquid level height and the sludge depth are measured by matching the weighing sensor and the hydraulic sensor, and the electric device containing the sensor is arranged at the bottom of the sludge pool to replace the traditional mechanical structure, so that the long-term reliability of detection is increased; the depth and the liquid level height of the sludge are monitored in real time, unmanned detection is realized, and the safety of the operation under the mine is improved

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.