CN110745401A - Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof - Google Patents
Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof Download PDFInfo
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- CN110745401A CN110745401A CN201911200243.9A CN201911200243A CN110745401A CN 110745401 A CN110745401 A CN 110745401A CN 201911200243 A CN201911200243 A CN 201911200243A CN 110745401 A CN110745401 A CN 110745401A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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Abstract
The invention relates to a coal bunker coal level automatic detection alarm device based on a pressure sensor and a using method thereof, the coal bunker coal level automatic detection alarm device comprises a coal bunker, an upper platform, a connecting rod and a pressure sensor protection piece, wherein the upper end and the lower end of the pressure sensor protection piece are respectively provided with a connector, the upper end of the pressure sensor protection piece is provided with a connector provided with an internal thread A, the lower end of the pressure sensor protection piece is provided with a connector provided with an external thread A, the two ends of the connecting rod are respectively provided with an external thread B and an internal thread B which are matched with the internal thread A and the external thread A arranged at the two ends of the pressure sensor protection piece, the upper side of the upper platform is provided with a lifting fixed pressure sensor device, the lifting fixed pressure sensor device comprises a hydraulic driving clamping, A screw and a nut; the invention has the advantages of accurate measurement, high safety and real-time monitoring.
Description
Technical Field
The invention belongs to the field of coal bunker coal level monitoring, and particularly relates to a coal bunker coal level automatic detection alarm device based on a pressure sensor and a use method thereof.
Background
The coal bunker is used as a key node for coal flow transportation in a coal mine, the overtaking and emptying (emptying) of the coal bunker can generate great threat to the safety of the mine, the real-time accurate control of the coal level of the coal bunker is an important guarantee for ensuring the safety production and improving the efficiency, the control key is the accurate measurement of the coal level of the coal bunker, and various methods for measuring the coal level exist in the current stage of China, but the methods have various problems due to the poor environment in the mine; for example: the heavy hammer in the heavy hammer type coal level detection system is in danger of being buried when being contacted with materials, and a steel wire rope with the suspended heavy hammer is easy to be damaged by falling coal; the capacitance type coal level detection system has strict requirements on the dielectric constant of the measured material; the rays of the nuclear radiation type coal level detection system are harmful, and the whole device has high protection requirements, high cost and other factors; the ultrasonic level meter is only suitable for measuring lump materials with larger granularity, the measuring range is limited, and the radar level meter is greatly influenced by the dust concentration, the temperature of a coal bunker and other factors; in order to avoid potential safety hazards of coal bunkers caused by errors of instrument measurement, many coal mines can only rely on the oldest method to measure through manual experience and simple machinery; therefore, it is very necessary to provide the automatic coal level detection and alarm device based on the pressure sensor and the use method thereof, which has the advantages of reasonable structure, convenience in use, accurate measurement and high safety.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the automatic coal level detection and alarm device based on the pressure sensor and based on the coal bunker, which has the advantages of reasonable structure, convenience in use, accurate measurement and high safety, and the use method thereof.
The purpose of the invention is realized as follows: a coal bunker coal level automatic detection alarm device based on a pressure sensor comprises a coal bunker, an upper platform, a connecting rod and a pressure sensor protection piece, wherein the upper end and the lower end of the pressure sensor protection piece are respectively provided with a connector, the connector arranged at the upper end of the pressure sensor protection piece is provided with an internal thread A, the connector arranged at the lower end of the pressure sensor protection piece is provided with an external thread A, the connecting rod is a hollow cylindrical connecting rod, the two ends of the connecting rod are respectively provided with an external thread B and an internal thread B which are matched with the internal thread A and the external thread A arranged at the two ends of the pressure sensor protection piece, the inner side of the pressure sensor protection piece is provided with a pressure sensor, the pressure sensor comprises a pressure plate, a signal processor and a shell, the shell is cylindrical, and the pressure plate is arranged on the upper bottom surface and the lower, the signal processor is used for converting the force signal into an electric signal; the upper side of the upper platform is provided with a lifting fixed pressure sensor device, the lifting fixed pressure sensor device comprises a hydraulic driving clamping device, a hydraulic driving rotating chuck, a supporting frame and a lifting connecting piece, the hydraulic driving clamping device comprises a hydraulic cylinder, a fixed plate, a screw rod and a nut, four corners of the fixed plate are respectively provided with four screw holes, the hydraulic cylinder is fixed through the mutual matching of the fixed plate, the screw rod and the nut, the inner side of the hydraulic cylinder is provided with a telescopic pillar, and the pillar is connected with a clamping block; the support frame comprises a support platform, slide bars and a lifting hydraulic cylinder, wherein the support platform is fixedly arranged on the upper side of the upper platform and is used for placing and fixing the hydraulic drive clamping device, a circular hole which is convenient for a connecting bar to pass through is formed in the middle of the lower side of the support platform, the slide bars are vertically arranged on one side of the support platform, the two slide bars are arranged and parallel to each other, the lifting hydraulic cylinder is arranged between the two slide bars, the bottom of the lifting connecting piece is connected with the end head of the lifting hydraulic cylinder, the lifting connecting piece is connected with a hydraulic drive rotating chuck, and sliding grooves matched with the slide bars are respectively formed in two sides of the end part of the lifting connecting piece; the upper side of the upper platform is also provided with a belt conveyor and an operating platform, the operating platform comprises a control system, a receiving system and a display screen, the receiving system is connected with a transmission system, and the transmission system is connected with a signal processor of the pressure sensor; the upper wall of the coal bunker is provided with a sensor inlet, and the lower side of the coal bunker is provided with a coal discharging machine.
The two connectors arranged on the pressure sensor protection piece are penetrated by a circle with the same diameter, the penetrated hollow part is used for placing a power line and a signal line of the pressure sensor, the signal line of the pressure sensor is connected with a transmission system, the number of the pressure sensor protection pieces is at least two, and two pressure sensors are arranged on the inner side of each pressure sensor protection piece.
The height of the coal bunker is 20-50m, and a coal discharger arranged on the lower side of the coal bunker is a vibration coal discharger; the upper side of the coal bunker is provided with a full bunker preventing line, and the lower part of the coal bunker is provided with an empty bunker preventing line.
And pressure sensor protecting pieces are respectively arranged on the lower sides of the plane positions of the empty bin preventing line and the full bin preventing line.
The connecting rods are at least three in number, external threads B arranged on the connecting rods are matched with internal threads A arranged on a connecting head of the pressure sensor protection piece, and internal threads B arranged on the connecting rods are matched with external threads A arranged on the connecting head of the pressure sensor protection piece.
The clamping block realizes the clamping or the loosening of the connecting rod through the extension and the retraction of a strut arranged on the inner side of the hydraulic cylinder.
The support frame is approximately L-shaped.
A use method of a pressure sensor-based automatic coal bunker coal level detection alarm device comprises the following steps:
step 1): designing the number and the positions of the pressure sensor protection pieces and the connecting rods according to the height of the coal bunker, wherein two pressure sensors are arranged in each pressure sensor protection piece;
step 2): according to the design sequence, a first pressure sensor protection piece is fixed at the lower end of a first connecting rod in a threaded fit mode, a lifting hydraulic cylinder is driven to ascend, so that a hydraulic drive rotating chuck ascends to the topmost part of a sliding rod, one end, close to the pressure sensor protection piece, of the connecting rod is inserted into the hollow part of the hydraulic drive rotating chuck, the hydraulic drive rotating chuck clamps the connecting rod tightly, a hydraulic drive clamping device is loosened to enable the pressure sensor protection piece and the connecting rod to pass through, the end head of the lifting hydraulic cylinder retracts to drive the connecting rod clamped by the hydraulic drive rotating chuck, and therefore the first connecting rod enters a coal bunker;
step 3): when the hydraulically driven rotating chuck 14 descends to the lowest position, the hydraulically driven clamping device clamps the first connecting rod, then the hydraulically driven rotating chuck loosens the connecting rod and ascends to the highest position again, then the first connecting rod is clamped, then the hydraulically driven clamping device loosens the first connecting rod, and then the hydraulically driven rotating chuck descends again, so that the first connecting rod continues to descend;
step 4): when the upper end of the first connecting rod reaches the position of the hydraulically-driven rotating chuck, installing a pressure sensor protection piece or connecting a second connecting rod at the upper end of the first connecting rod according to requirements, and then repeating the step 2) and the step 3), so that the connecting rods and the pressure sensor protection piece enter the coal bunker.
The invention has the beneficial effects that: when the coal bunker is used, after the connecting rod and the pressure sensor are installed, the belt conveyor arranged on the upper platform conveys coal into the coal bunker, and with the increase of the coal feeding amount, splashing can be generated in the coal dropping process, so that the pressure sensor generates weak and unstable signals, and the weak and unstable signals can be automatically deleted after being transmitted to the receiving system; when the coal level in the coal bunker rises to a position near a non-empty bunker preventing line, the coal falling can measure the pressure of a pressure plate of a pressure sensor arranged on the lower side of the plane of the non-empty bunker preventing line, a receiving system can transmit the pressure signal to a control system, the control system displays the corresponding coal level on a display screen of an operation table in a dynamic picture mode after processing, and meanwhile, information can be transmitted to a dispatching room on the ground, and similarly, along with the continuous rising of the coal level, the pressure signals of a plurality of pressure sensors arranged in the coal bunker are different, and according to the pressure signals transmitted by the plurality of pressure sensors, the control system continuously processes the coal bunker and can monitor the coal bunker in real time; when the coal level reaches the pressure sensor arranged on the lower side of the plane of the full bunker filling prevention line, the coal level can send a signal to the control system, the control system can give a red warning on a display screen of the operation table, send out a voice alarm and simultaneously reduce the speed of the belt conveyor or stop the pre-rotation of the belt conveyor; when the coal bunker is subjected to coal discharging operation, the coal level is continuously lowered, the pressure value of a pressure sensor near the coal level is continuously lowered, the pressure sensor can transmit a pressure signal to a control system, the pressure signal is processed by the control system, real-time information of the coal level lowering is displayed on a display screen of an operation table, meanwhile, the information can also be transmitted to a ground dispatching room, when the coal level is lowered to the position of the pressure sensor arranged on the lower side of the plane of the empty bunker preventing line, the pressure sensor sends a signal to the control system, the control system carries out red warning on the display screen of the operation table, sends out voice alarm, and simultaneously closes a coal discharger arranged on the lower side of the coal bunker, so that the coal bunker is closed to stop coal discharging; the invention has the advantages of reasonable structure, convenient use, accurate measurement, high safety and real-time monitoring.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial structural schematic diagram of the present invention.
Fig. 3 is a schematic structural view of a fixing plate according to the present invention.
Fig. 4 is a schematic structural view of a protector for a pressure sensor according to the present invention.
Fig. 5 is a schematic structural view of the pressure sensor of the present invention.
Fig. 6 is a schematic view of the structure of the hydraulically driven clamping device of the present invention.
Fig. 7 is a schematic structural view of the support frame of the present invention.
Fig. 8 is a schematic structural view of the connecting rod of the present invention.
FIG. 9 is a schematic view of the structure of the operation table of the present invention.
In the figure: 1. coal bunker 2, pressure sensor 3, pressure sensor protector 4, connecting rod 5, pressure plate 6, signal processor 7, housing 8, connector 9, internal thread A10, external thread A11, internal thread B12, external thread B13, hydraulic drive clamping device 14, hydraulic drive rotary chuck 15, support frame 16, lifting connector 17, hydraulic cylinder 18, fixing plate 19, screw 20, nut 21, pillar 22, screw hole 23, support platform 24, slide rod 25, lifting hydraulic cylinder 26, circular hole 27, slide way 28, end 29, receiving system 30, control system 31, transmission system 32, operation platform 33, display screen 34, belt conveyor 35, coal discharger 36, sensor inlet 37, empty bin preventing line 38, full bin preventing line 39, upper platform 40, And (5) clamping the blocks.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-9, an automatic coal level detection and alarm device for a coal bunker based on a pressure sensor comprises a coal bunker 1, an upper platform 39, a connecting rod 4 and a pressure sensor protection member 3, wherein the upper end and the lower end of the pressure sensor protection member 3 are respectively provided with a connector 8, the connector arranged at the upper end of the pressure sensor protection member 3 is provided with an internal thread a9, the connector arranged at the lower end of the pressure sensor protection member 3 is provided with an external thread a10, the connecting rod 4 is a hollow cylindrical connecting rod, two ends of the connecting rod 4 are respectively provided with an external thread B12 and an internal thread B11 which are matched with the internal thread a9 and the external thread a10 arranged at two ends of the pressure sensor protection member 3, the pressure sensor 2 is arranged at the inner side of the pressure sensor protection member 3, and the pressure sensor 2 comprises, A signal processor 6 and a housing 7, wherein the housing 7 is cylindrical, the pressure plate 5 is arranged on the upper bottom surface and the lower bottom surface of the housing 7, and the signal processor 6 is used for converting a force signal into an electric signal; a lifting fixing pressure sensor device is arranged on the upper side of the upper platform 39, the lifting fixing pressure sensor device comprises a hydraulic driving clamping device 13, a hydraulic driving rotating chuck 14, a supporting frame 15 and a lifting connecting piece 16, the hydraulic driving clamping device 13 comprises a hydraulic cylinder 17, a fixing plate 18, a screw rod 19 and a nut 20, four corners of the fixing plate 18 are respectively provided with four screw holes 22, the hydraulic cylinder 17 is fixed by the mutual matching of the fixing plate 18, the screw rod 19 and the nut 20, a telescopic support column 21 is arranged on the inner side of the hydraulic cylinder 17, and the support column 21 is connected with a clamping block 40; the support frame 15 comprises a support platform 23, two sliding rods 24 and a lifting hydraulic cylinder 25, wherein the support platform 23 is fixedly arranged on the upper side of an upper platform 39, the support platform 23 is used for placing and fixing the hydraulic drive clamping device 13, a circular hole 26 convenient for a connecting rod 4 to pass through is formed in the middle of the lower side of the support platform 23, the two sliding rods 24 are vertically arranged on one side of the support platform, the two sliding rods 24 are parallel to each other, the lifting hydraulic cylinder 25 is arranged between the two sliding rods 24, the bottom of the lifting connecting piece 16 is connected with the end of the lifting hydraulic cylinder 25, the lifting connecting piece 16 is connected with a hydraulic drive rotating chuck 14, and sliding grooves matched with the sliding rods 24 are respectively formed in two sides of the end part of the lifting connecting piece 16; the upper side of the upper platform 39 is also provided with a belt conveyor 34 and an operation table 32, the operation table 32 comprises a control system 30, a receiving system 29 and a display screen 33, the receiving system 29 is connected with a transmission system 31, and the transmission system 31 is connected with the signal processor 6 of the pressure sensor 2; the upper wall of the coal bunker 1 is provided with a sensor inlet 36, and the lower side of the coal bunker 1 is provided with a coal discharger 35.
The height of the coal bunker 1 is 20-50m, and a coal discharger 35 arranged at the lower side of the coal bunker 1 is a vibration coal discharger; the upper side of the coal bunker 1 is provided with a full bunker preventing line 38, and the lower part of the coal bunker is provided with an empty bunker preventing line 37.
The pressure sensor protection parts are respectively arranged on the lower sides of the plane positions of the empty bin preventing line 37 and the full bin preventing line 38.
A use method of a pressure sensor-based automatic coal bunker coal level detection alarm device comprises the following steps:
step 1): the number and the positions of the pressure sensor protection pieces 3 and the connecting rods 4 are designed according to the height of the coal bunker 1, and two pressure sensors 2 are arranged in each pressure sensor protection piece 3;
step 2): according to the design sequence, a first pressure sensor protection piece 3 is fixed at the lower end of a first connecting rod 4 through thread fit, a lifting hydraulic cylinder 25 is driven to ascend, so that a hydraulic drive rotating chuck 14 ascends to the topmost part of a sliding rod 24, one end, close to the pressure sensor protection piece 3, of the connecting rod 4 is inserted from the hollow part of the hydraulic drive rotating chuck 14, the hydraulic drive rotating chuck 14 clamps the connecting rod 4, a hydraulic drive clamping device 13 is loosened to enable the pressure sensor protection piece 3 and the connecting rod 4 to pass through, and the end head of the lifting hydraulic cylinder 25 retracts to drive the connecting rod 4 clamped by the hydraulic drive rotating chuck 14, so that the first connecting rod 4 enters a coal bunker;
step 3): when the hydraulically driven rotating chuck 14 descends to the lowest position, the hydraulically driven clamping device 13 clamps the first connecting rod, then the hydraulically driven rotating chuck 14 loosens the connecting rod 4 and ascends to the highest position again, then the first connecting rod 4 is clamped, then the hydraulically driven clamping device 13 loosens the first connecting rod, and then the hydraulically driven rotating chuck 14 descends again, so that the first connecting rod 4 descends continuously;
step 4): when the upper end of the first connecting rod 4 reaches the position of the hydraulically driven spin chuck 14, the pressure sensor protector 3 is installed or a second connecting rod is connected to the upper end of the first connecting rod 4 as required, and then the steps 2) and 3) are repeated, so that the plurality of connecting rods and the pressure sensor protector 3 enter the coal bunker 1.
When the coal feeding device is used, after the connecting rod 4 and the pressure sensor 2 are installed, the belt conveyor 34 arranged on the upper platform 39 conveys coal into the coal bunker 1, along with the increase of the coal feeding amount, splashing can be generated in the coal dropping process, so that the pressure sensor 2 generates weak and unstable signals, and the weak and unstable signals can be automatically deleted after being transmitted to the receiving system 29; when the coal level in the coal 1 bin rises to the position near the empty bin preventing line 37, the coal falling can measure the pressure of the pressure plate 5 of the pressure sensor 2 arranged on the lower side of the plane of the empty bin preventing line 37, the receiving system 29 can transmit the pressure signal to the control system 30, the control system 30 displays the corresponding coal level on the display screen 33 of the operation table 32 in the form of a dynamic picture after processing, and simultaneously can transmit information to a dispatching room on the ground, and similarly, along with the continuous rise of the coal level, the pressure signals of the plurality of pressure sensors 2 arranged in the coal bin are different, and the control system 30 continuously processes the coal level according to the pressure signals transmitted by the plurality of pressure sensors 2, so that the coal bin 1 can be monitored in real time; when the coal level reaches the pressure sensor 2 arranged on the lower side of the plane of the full-bin-full-preventing line 38, a signal is sent to the control system, the control system can carry out red warning on the display screen of the operation table 32, send out voice alarm, and simultaneously reduce the speed of the belt conveyor 34 or stop the pre-rotation of the belt conveyor; when the coal bunker 1 carries out coal discharging operation, the coal level is continuously lowered, the pressure value of the pressure sensor 2 near the coal level is continuously lowered, the transmission system 31 can transmit the pressure signal to the control system 30, the pressure signal is processed by the control system 30, real-time information of the lowered coal level is displayed on the display screen 33 of the operation platform 32, meanwhile, the information can also be transmitted to the ground dispatching room, when the coal level is lowered to the position of the pressure sensor 2 arranged on the lower side of the plane of the empty bunker preventing line 37, the pressure sensor 2 sends a signal to the control system, the control system 30 carries out red warning on the display screen of the operation platform, a voice alarm is sent, and the coal discharger 35 arranged on the lower side of the coal bunker is closed, so that the coal bunker 1 is closed and stops coal discharging; the invention has the advantages of reasonable structure, convenient use, accurate measurement, high safety and real-time monitoring.
Example 2
As shown in fig. 1-9, an automatic coal level detection and alarm device for a coal bunker based on a pressure sensor comprises a coal bunker 1, an upper platform 39, a connecting rod 4 and a pressure sensor protection member 3, wherein the upper end and the lower end of the pressure sensor protection member 3 are respectively provided with a connector 8, the connector arranged at the upper end of the pressure sensor protection member 3 is provided with an internal thread a9, the connector arranged at the lower end of the pressure sensor protection member 3 is provided with an external thread a10, the connecting rod 4 is a hollow cylindrical connecting rod, two ends of the connecting rod 4 are respectively provided with an external thread B12 and an internal thread B11 which are matched with the internal thread a9 and the external thread a10 arranged at two ends of the pressure sensor protection member 3, the pressure sensor 2 is arranged at the inner side of the pressure sensor protection member 3, and the pressure sensor 2 comprises, A signal processor 6 and a housing 7, wherein the housing 7 is cylindrical, the pressure plate 5 is arranged on the upper bottom surface and the lower bottom surface of the housing 7, and the signal processor 6 is used for converting a force signal into an electric signal; a lifting fixing pressure sensor device is arranged on the upper side of the upper platform 39, the lifting fixing pressure sensor device comprises a hydraulic driving clamping device 13, a hydraulic driving rotating chuck 14, a supporting frame 15 and a lifting connecting piece 16, the hydraulic driving clamping device 13 comprises a hydraulic cylinder 17, a fixing plate 18, a screw rod 19 and a nut 20, four corners of the fixing plate 18 are respectively provided with four screw holes 22, the hydraulic cylinder 17 is fixed by the mutual matching of the fixing plate 18, the screw rod 19 and the nut 20, a telescopic support column 21 is arranged on the inner side of the hydraulic cylinder 17, and the support column 21 is connected with a clamping block 40; the support frame 15 comprises a support platform 23, two sliding rods 24 and a lifting hydraulic cylinder 25, wherein the support platform 23 is fixedly arranged on the upper side of an upper platform 39, the support platform 23 is used for placing and fixing the hydraulic drive clamping device 13, a circular hole 26 convenient for a connecting rod 4 to pass through is formed in the middle of the lower side of the support platform 23, the two sliding rods 24 are vertically arranged on one side of the support platform, the two sliding rods 24 are parallel to each other, the lifting hydraulic cylinder 25 is arranged between the two sliding rods 24, the bottom of the lifting connecting piece 16 is connected with the end of the lifting hydraulic cylinder 25, the lifting connecting piece 16 is connected with a hydraulic drive rotating chuck 14, and sliding grooves matched with the sliding rods 24 are respectively formed in two sides of the end part of the lifting connecting piece 16; the upper side of the upper platform 39 is also provided with a belt conveyor 34 and an operation table 32, the operation table 32 comprises a control system 30, a receiving system 29 and a display screen 33, the receiving system 29 is connected with a transmission system 31, and the transmission system 31 is connected with the signal processor 6 of the pressure sensor 2; the upper wall of the coal bunker 1 is provided with a sensor inlet 36, and the lower side of the coal bunker 1 is provided with a coal discharger 35.
For better effect, the pressure sensor protection member 3 is similar to an ellipsoid, two connecting heads arranged on the pressure sensor protection member 3 are penetrated by a circle with the same diameter, the penetrated hollow part is used for placing a power line and a signal line of the pressure sensor 2, the signal line of the pressure sensor is connected with the transmission system 31, the number of the pressure sensor protection members 3 is at least two, and two pressure sensors 2 are arranged on the inner side of each pressure sensor protection member 3; two pressure sensors are arranged in each pressure sensor protection piece 3, so that the monitoring of the coal level can be more accurate.
For better effect, the height of the coal bunker 1 is 20-50m, and the coal discharger 35 arranged at the lower side of the coal bunker 1 is a vibration coal discharger; the upper side of the coal bunker 1 is provided with a full bunker preventing line 38, and the lower part of the coal bunker is provided with an empty bunker preventing line 37.
For better effect, the pressure sensor protecting parts are respectively arranged at the lower sides of the plane positions of the empty bin preventing line 37 and the full bin preventing line 38, the sensors are arranged at the positions near the empty bin preventing line 37 and the full bin preventing line 38, when the coal level in the coal bin is high, the pressure sensor 2 near the full bin preventing line 38 can timely obtain a pressure signal so as to transmit the signal to the control system 30, and when the pressure sensor 2 near the empty bin preventing line 37 is used for discharging coal in the coal bin, the pressure signal can be timely transmitted to the control system 30 when the coal level is low and reaches the position of the empty bin preventing line 37.
For better effect, the number of the connecting rods 4 is at least three, the external thread B12 arranged on the connecting rod 4 is matched with the internal thread a9 arranged on the connecting head of the pressure sensor protecting piece 3, and the internal thread B11 arranged on the connecting rod 4 is matched with the external thread a10 arranged on the connecting head of the pressure sensor protecting piece 3.
For better effect, the clamping block 40 clamps or releases the connecting rod 4 by extending and retracting the strut 21 arranged inside the hydraulic cylinder 17, and the inner surface of the side of the clamping block 40 contacting the connecting rod 4 is an arc-shaped inner surface which is arranged to be an arc-shaped inner surface, so that the clamping of the connecting rod 4 is facilitated.
The support frame 15 is an approximate L-shaped support frame.
For better effect, the vertical central line of the hydraulic drive rotating chuck 14, the vertical central line of the hydraulic drive clamping device 13, the vertical central line of the connecting rod 4 and the vertical central lines of the connectors 8 at the two ends of the pressure sensor protecting piece 3 are in a straight line.
A use method of a pressure sensor-based automatic coal bunker coal level detection alarm device comprises the following steps:
step 1): the number and the positions of the pressure sensor protection pieces 3 and the connecting rods 4 are designed according to the height of the coal bunker 1, and two pressure sensors 2 are arranged in each pressure sensor protection piece 3;
step 2): according to the design sequence, a first pressure sensor protection piece 3 is fixed at the lower end of a first connecting rod 4 through thread fit, a lifting hydraulic cylinder 25 is driven to ascend, so that a hydraulic drive rotating chuck 14 ascends to the topmost part of a sliding rod 24, one end, close to the pressure sensor protection piece 3, of the connecting rod 4 is inserted from the hollow part of the hydraulic drive rotating chuck 14, the hydraulic drive rotating chuck 14 clamps the connecting rod 4, a hydraulic drive clamping device 13 is loosened to enable the pressure sensor protection piece 3 and the connecting rod 4 to pass through, and the end head of the lifting hydraulic cylinder 25 retracts to drive the connecting rod 4 clamped by the hydraulic drive rotating chuck 14, so that the first connecting rod 4 enters a coal bunker;
step 3): when the hydraulically driven rotating chuck 14 descends to the lowest position, the hydraulically driven clamping device 13 clamps the first connecting rod, then the hydraulically driven rotating chuck 14 loosens the connecting rod 4 and ascends to the highest position again, then the first connecting rod 4 is clamped, then the hydraulically driven clamping device 13 loosens the first connecting rod, and then the hydraulically driven rotating chuck 14 descends again, so that the first connecting rod 4 descends continuously;
step 4): when the upper end of the first connecting rod 4 reaches the position of the hydraulically driven spin chuck 14, the pressure sensor protector 3 is installed or a second connecting rod is connected to the upper end of the first connecting rod 4 as required, and then the steps 2) and 3) are repeated, so that the plurality of connecting rods and the pressure sensor protector 3 enter the coal bunker 1.
When the coal feeding device is used, after the connecting rod 4 and the pressure sensor 2 are installed, the belt conveyor 34 arranged on the upper platform 39 conveys coal into the coal bunker 1, along with the increase of the coal feeding amount, splashing can be generated in the coal dropping process, so that the pressure sensor 2 generates weak and unstable signals, and the weak and unstable signals can be automatically deleted after being transmitted to the receiving system 29; when the coal level in the coal 1 bin rises to the position near the empty bin preventing line 37, the coal falling can measure the pressure of the pressure plate 5 of the pressure sensor 2 arranged on the lower side of the plane of the empty bin preventing line 37, the receiving system 29 can transmit the pressure signal to the control system 30, the control system 30 displays the corresponding coal level on the display screen 33 of the operation table 32 in the form of a dynamic picture after processing, and simultaneously can transmit information to a dispatching room on the ground, and similarly, along with the continuous rise of the coal level, the pressure signals of the plurality of pressure sensors 2 arranged in the coal bin are different, and the control system 30 continuously processes the coal level according to the pressure signals transmitted by the plurality of pressure sensors 2, so that the coal bin 1 can be monitored in real time; when the coal level reaches the pressure sensor 2 arranged on the lower side of the plane of the full-bin-full-preventing line 38, a signal is sent to the control system, the control system can carry out red warning on the display screen of the operation table 32, send out voice alarm, and simultaneously reduce the speed of the belt conveyor 34 or stop the pre-rotation of the belt conveyor; when the coal bunker 1 carries out coal discharging operation, the coal level is continuously lowered, the pressure value of the pressure sensor 2 near the coal level is continuously lowered, the transmission system 31 can transmit the pressure signal to the control system 30, the pressure signal is processed by the control system 30, real-time information of the lowered coal level is displayed on the display screen 33 of the operation platform 32, meanwhile, the information can also be transmitted to the ground dispatching room, when the coal level is lowered to the position of the pressure sensor 2 arranged on the lower side of the plane of the empty bunker preventing line 37, the pressure sensor 2 sends a signal to the control system, the control system 30 carries out red warning on the display screen of the operation platform, a voice alarm is sent, and the coal discharger 35 arranged on the lower side of the coal bunker is closed, so that the coal bunker 1 is closed and stops coal discharging; the invention has the advantages of reasonable structure, convenient use, accurate measurement, high safety and real-time monitoring.
Claims (8)
1. The utility model provides a based on pressure sensor coal bunker coal position automated inspection alarm device, it includes coal bunker, upper portion platform, connecting rod, pressure sensor protection piece, its characterized in that: the pressure sensor protection piece comprises a pressure sensor protection piece, a connecting rod and a signal processor, wherein the upper end and the lower end of the pressure sensor protection piece are respectively provided with a connector, the connector arranged at the upper end of the pressure sensor protection piece is provided with an internal thread A, the connector arranged at the lower end of the pressure sensor protection piece is provided with an external thread A, the connecting rod is a hollow cylindrical connecting rod, two ends of the connecting rod are respectively provided with an external thread B and an internal thread B which are matched with the internal thread A and the external thread A arranged at two ends of the pressure sensor protection piece, the inner side of the pressure sensor protection piece is provided with a pressure sensor, the pressure sensor comprises a pressure plate, a signal processor and a shell, the shell is cylindrical, the pressure plate is arranged on the upper bottom; the upper side of the upper platform is provided with a lifting fixed pressure sensor device, the lifting fixed pressure sensor device comprises a hydraulic driving clamping device, a hydraulic driving rotating chuck, a supporting frame and a lifting connecting piece, the hydraulic driving clamping device comprises a hydraulic cylinder, a fixed plate, a screw rod and a nut, four corners of the fixed plate are respectively provided with four screw holes, the hydraulic cylinder is fixed through the mutual matching of the fixed plate, the screw rod and the nut, the inner side of the hydraulic cylinder is provided with a telescopic pillar, and the pillar is connected with a clamping block; the support frame comprises a support platform, slide bars and a lifting hydraulic cylinder, wherein the support platform is fixedly arranged on the upper side of the upper platform and is used for placing and fixing the hydraulic drive clamping device, a circular hole which is convenient for a connecting bar to pass through is formed in the middle of the lower side of the support platform, the slide bars are vertically arranged on one side of the support platform, the two slide bars are arranged and parallel to each other, the lifting hydraulic cylinder is arranged between the two slide bars, the bottom of the lifting connecting piece is connected with the end head of the lifting hydraulic cylinder, the lifting connecting piece is connected with a hydraulic drive rotating chuck, and sliding grooves matched with the slide bars are respectively formed in two sides of the end part of the lifting connecting piece; the upper side of the upper platform is also provided with a belt conveyor and an operating platform, the operating platform comprises a control system, a receiving system and a display screen, the receiving system is connected with a transmission system, and the transmission system is connected with a signal processor of the pressure sensor; the upper wall of the coal bunker is provided with a sensor inlet, and the lower side of the coal bunker is provided with a coal discharging machine.
2. The automatic coal bunker level detection and alarm device based on the pressure sensor as claimed in claim 1, wherein: the two connectors arranged on the pressure sensor protection piece are penetrated by a circle with the same diameter, the penetrated hollow part is used for placing a power line and a signal line of the pressure sensor, the signal line of the pressure sensor is connected with a transmission system, the number of the pressure sensor protection pieces is at least two, and two pressure sensors are arranged on the inner side of each pressure sensor protection piece.
3. The automatic coal bunker level detection and alarm device based on the pressure sensor as claimed in claim 2, wherein: the height of the coal bunker is 20-50m, and a coal discharger arranged on the lower side of the coal bunker is a vibration coal discharger; the upper side of the coal bunker is provided with a full bunker preventing line, and the lower part of the coal bunker is provided with an empty bunker preventing line.
4. The automatic coal bunker level detection and alarm device based on the pressure sensor as claimed in claim 3, wherein: and pressure sensor protecting pieces are respectively arranged on the lower sides of the plane positions of the empty bin preventing line and the full bin preventing line.
5. The automatic coal bunker level detection and alarm device based on the pressure sensor as claimed in claim 1, wherein: the connecting rods are at least three in number, external threads B arranged on the connecting rods are matched with internal threads A arranged on a connecting head of the pressure sensor protection piece, and internal threads B arranged on the connecting rods are matched with external threads A arranged on the connecting head of the pressure sensor protection piece.
6. The automatic coal bunker level detection and alarm device based on the pressure sensor as claimed in claim 1, wherein: the clamping block realizes the clamping or the loosening of the connecting rod through the extension and the retraction of a strut arranged on the inner side of the hydraulic cylinder.
7. The automatic coal bunker level detection and alarm device based on the pressure sensor as claimed in claim 1, wherein: the support frame is approximately L-shaped.
8. The use method of the automatic coal bunker level detection alarm device based on the pressure sensor as claimed in claim 1, characterized in that: it comprises the following steps:
step 1): designing the number and the positions of the pressure sensor protection pieces and the connecting rods according to the height of the coal bunker, wherein two pressure sensors are arranged in each pressure sensor protection piece;
step 2): according to the design sequence, a first pressure sensor protection piece is fixed at the lower end of a first connecting rod in a threaded fit mode, a lifting hydraulic cylinder is driven to ascend, so that a hydraulic drive rotating chuck ascends to the topmost part of a sliding rod, one end, close to the pressure sensor protection piece, of the connecting rod is inserted into the hollow part of the hydraulic drive rotating chuck, the hydraulic drive rotating chuck clamps the connecting rod tightly, a hydraulic drive clamping device is loosened to enable the pressure sensor protection piece and the connecting rod to pass through, the end head of the lifting hydraulic cylinder retracts to drive the connecting rod clamped by the hydraulic drive rotating chuck, and therefore the first connecting rod enters a coal bunker;
step 3): when the hydraulically driven rotating chuck 14 descends to the lowest position, the hydraulically driven clamping device clamps the first connecting rod, then the hydraulically driven chuck loosens the connecting rod and ascends to the highest position again, then the first connecting rod is clamped, then the hydraulically driven clamping device loosens the first connecting rod, then the hydraulically driven rotating chuck descends again, and the first connecting rod continues to descend;
step 4): when the upper end of the first connecting rod reaches the position of the hydraulically-driven rotating chuck, installing a pressure sensor protection piece or connecting a second connecting rod at the upper end of the first connecting rod according to requirements, and then repeating the step 2) and the step 3), so that the connecting rods and the pressure sensor protection piece enter the coal bunker.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200243.9A CN110745401A (en) | 2019-11-29 | 2019-11-29 | Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911200243.9A CN110745401A (en) | 2019-11-29 | 2019-11-29 | Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof |
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| CN110745401A true CN110745401A (en) | 2020-02-04 |
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| CN201911200243.9A Pending CN110745401A (en) | 2019-11-29 | 2019-11-29 | Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof |
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