CN210865076U - Oil-break protection device of screw air compressor for coal mine - Google Patents
Oil-break protection device of screw air compressor for coal mine Download PDFInfo
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- CN210865076U CN210865076U CN202020193733.2U CN202020193733U CN210865076U CN 210865076 U CN210865076 U CN 210865076U CN 202020193733 U CN202020193733 U CN 202020193733U CN 210865076 U CN210865076 U CN 210865076U
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Abstract
The utility model relates to a screw air compressor machine fuel cut-off protection technique for the colliery specifically is a screw air compressor machine fuel cut-off protection device for the colliery. The utility model provides a current screw air compressor machine fuel cut-off protection device for coal mine lack reasonable network topology and swift efficient transmission medium's problem. A coal mine screw air compressor oil-break protection device comprises a terminal part and a transmission medium part; the terminal part comprises a plurality of oil pressure sensors, a plurality of liquid level sensors, a plurality of temperature sensors, a plurality of air pressure sensors, first to sixth signal isolators, a first PLC, a second PLC, an emergency stop switch, an audible and visual alarm and a plurality of PCs; the transmission medium part comprises a first LonWorks bus, a second LonWorks bus, a twisted pair and a coaxial cable. The utility model is suitable for a screw air compressor machine fuel cut-off protection for the colliery.
Description
Technical Field
The utility model relates to a screw air compressor machine fuel cut-off protection technique for the colliery specifically is a screw air compressor machine fuel cut-off protection device for the colliery.
Background
At present, the oil-cut protection of the screw air compressor for the coal mine is mainly realized by the oil-cut protection device of the screw air compressor for the coal mine. However, under the prior art, the oil-cut protection device for the screw air compressor for the coal mine is limited by the structure of the device, and generally lacks a reasonable network topology structure and a quick and efficient transmission medium, so that the problems of unstable operation and poor reliability are generally caused, and the stability, reliability and instantaneity of the oil-cut protection of the screw air compressor for the coal mine are directly influenced. Based on the situation, a brand-new oil-cut protection device for the screw air compressor for the coal mine needs to be invented, so that the problem that the existing oil-cut protection device for the screw air compressor for the coal mine lacks a reasonable network topology structure and a quick and efficient transmission medium is solved.
Disclosure of Invention
The utility model discloses a solve the problem that current screw air compressor machine fuel cut-off protection device for coal mine lacks reasonable network topology and swift efficient transmission medium, provide a screw air compressor machine fuel cut-off protection device for coal mine.
The utility model discloses an adopt following technical scheme to realize:
a coal mine screw air compressor oil-break protection device comprises a terminal part and a transmission medium part;
the terminal part comprises a plurality of oil pressure sensors, a plurality of liquid level sensors, a plurality of temperature sensors, a plurality of air pressure sensors, first to sixth signal isolators, a first PLC, a second PLC, an emergency stop switch, an audible and visual alarm and a plurality of PCs;
the transmission medium part comprises a first LonWorks bus, a second LonWorks bus, a twisted pair and a coaxial cable;
each oil pressure sensor, the first signal isolator and the second signal isolator are connected with the first LonWorks bus, and each oil pressure sensor, the first signal isolator, the second signal isolator and the first LonWorks bus form a bus type topological structure together;
each liquid level sensor is connected with a third signal isolator through a twisted pair, and each liquid level sensor and the third signal isolator jointly form a star-shaped topological structure; each liquid level sensor is connected with the fourth signal isolator through a twisted pair, and each liquid level sensor and the fourth signal isolator jointly form a star-shaped topological structure;
each temperature sensor is connected with a fifth signal isolator through a twisted pair, each air pressure sensor is connected with a sixth signal isolator through a twisted pair, and the sixth signal isolator is connected with the fifth signal isolator through a twisted pair; each temperature sensor and each air pressure sensor jointly form a branch of the tree-shaped topological structure, and the fifth signal isolator and the sixth signal isolator jointly form a trunk of the tree-shaped topological structure;
the first to fifth signal isolators, the first PLC and the second PLC are all connected with a second LonWorks bus, and the first to fifth signal isolators, the first PLC, the second PLC and the second LonWorks bus form a bus type topological structure together;
the first PLC and the second PLC are both connected with the emergency stop switch through coaxial cables; the first PLC and the second PLC are both connected with the audible and visual alarm through coaxial cables; the first PLC, the PC machines and the second PLC are sequentially connected in series through coaxial cables to form a daisy chain topological structure.
During operation, each oil pressure sensor is all installed on the main engine oil inlet pipeline of screw air compressor for the coal mine, each liquid level sensor is all installed on the oil gas bucket of screw air compressor for the coal mine, each temperature sensor and each pressure sensor are all installed on the wind bag of screw air compressor for the coal mine, and the scram switch is connected in series in the power supply circuit of screw air compressor for the coal mine.
The specific working process is as follows: each oil pressure sensor collects oil pressure data of an oil inlet pipeline of the host in real time and sends the collected oil pressure data to a first LonWorks bus in real time. The first signal isolator acquires oil pressure data in real time by accessing the first LonWorks bus, and transmits the acquired oil pressure data to the second LonWorks bus in real time after isolation and transformation are carried out on the acquired oil pressure data. Each liquid level sensor collects liquid level data of the oil gas barrel in real time and sends the collected liquid level data to the third signal isolator in real time through the twisted pair. And the third signal isolator carries out isolation transformation on the received liquid level data and then sends the liquid level data to a second LonWorks bus in real time. Each temperature sensor collects temperature data of the wind packet in real time, and sends the collected temperature data to the fifth signal isolator in real time through the twisted pair. Each air pressure sensor collects air pressure data of the air bag in real time and sends the collected air pressure data to the sixth signal isolator in real time through the twisted pair. And the sixth signal isolator transmits the received air pressure data to the fifth signal isolator in real time through the twisted pair. And the fifth signal isolator transmits the received temperature data and the received air pressure data to a second LonWorks bus in real time. The first PLC acquires data (oil pressure data, liquid level data, temperature data and air pressure data) in real time by accessing the second LonWorks bus, and then transmits the acquired data to each PC for display in real time through the coaxial cable on one hand, and compares the acquired data with a set value in real time on the other hand. When the acquired oil pressure data is lower than a set value, the first PLC controls the audible and visual alarm in real time to give an audible and visual alarm to remind an operator that an oil-break fault occurs in a main engine oil inlet pipeline, and controls the emergency stop switch to be disconnected in real time to enable the screw air compressor for the coal mine to be stopped emergently, so that the oil-break protection of the screw air compressor for the coal mine is realized. When the acquired liquid level data is lower than a set value, the first PLC controls the audible and visual alarm to perform audible and visual alarm on one hand, so that an operator is reminded of supplementing oil to the oil and gas barrel, and controls the emergency stop switch to be disconnected on the other hand, so that the screw air compressor for the coal mine is stopped emergently. When the acquired temperature data and the acquired air pressure data are higher than set values, the first PLC controls the audible and visual alarm to give an audible and visual alarm in real time on one hand to remind an operator that the air bag has over-temperature and over-pressure faults, and controls the emergency stop switch to be switched off in real time on the other hand to enable the screw air compressor for the coal mine to be stopped emergently. In the process, if the first signal isolator has a fault, the second signal isolator acquires oil pressure data in real time by accessing the first LonWorks bus, and sends the acquired oil pressure data to the second LonWorks bus in real time after isolation and transformation. And if the third signal isolator has faults, the liquid level sensors transmit the acquired liquid level data to the fourth signal isolator in real time through the twisted pair. And the fourth signal isolator carries out isolation transformation on the received liquid level data and then sends the liquid level data to a second LonWorks bus in real time. If the first PLC fails, the second PLC acquires data (oil pressure data, liquid level data, temperature data and air pressure data) in real time by accessing the second LonWorks bus, and then on one hand, the acquired data are sent to each PC in real time through the coaxial cable to be displayed, and on the other hand, the acquired data are compared with set values in real time. When the acquired oil pressure data is lower than a set value, or the acquired liquid level data is lower than the set value, or the acquired temperature data and air pressure data are higher than the set value, the second PLC controls the audible and visual alarm to give an audible and visual alarm in real time on one hand, and controls the emergency stop switch to be switched off in real time on the other hand.
Based on above-mentioned process, compare with current screw air compressor machine fuel cut-off protection device for the colliery, a screw air compressor machine fuel cut-off protection device for the colliery through adopting brand-new structure, possessed following advantage: firstly, the utility model comprehensively adopts a bus type topological structure, a star type topological structure, a tree type topological structure and a daisy chain topological structure, wherein, on one hand, the bus type topological structure has the advantages of simple structure, less required transmission medium, no central node, no failure of any node, high reliability and easy expansion, on the other hand, the star type topological structure has the advantages of simple structure, simple control, easy failure diagnosis and isolation, convenient service and good expansibility, on the third hand, the tree type topological structure has the advantages of easy expansion and easy failure isolation, on the fourth hand, the daisy chain topological structure can utilize the advantages of limited signal transmission lines to connect a plurality of nodes without bus competition and blockage, thereby having reasonable network topological structure, more stable operation and better reliability, therefore, the stability, reliability and instantaneity of the oil-cut protection of the screw air compressor for the coal mine are effectively ensured. And secondly, the utility model discloses a twisted pair line, coaxial cable are as transmission medium, on the one hand through utilizing twisted pair line transmission quality high, the wiring is convenient, the cable utilization ratio is high, the interference killing feature is strong, the reliability is high, high durability and convenient use, low price, convenient for material collection's advantage, on the other hand is good through utilizing coaxial cable shielding, transmission distance is far away, the bandwidth is high, the advantage that the noise suppression characteristic is good, swift efficient transmission medium has been possessed, therefore its operation is more stable, the reliability is better, thereby the stability of screw air compressor machine fuel cut-off protection for the colliery has effectively been guaranteed, reliability, real-time.
The utility model discloses rational in infrastructure, design benefit have effectively solved current screw air compressor machine fuel cut-off protection device for the colliery and have lacked the problem of reasonable network topology and swift efficient transmission medium, are applicable to the screw air compressor machine fuel cut-off protection for the colliery.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
A coal mine screw air compressor oil-break protection device comprises a terminal part and a transmission medium part;
the terminal part comprises a plurality of oil pressure sensors, a plurality of liquid level sensors, a plurality of temperature sensors, a plurality of air pressure sensors, first to sixth signal isolators, a first PLC, a second PLC, an emergency stop switch, an audible and visual alarm and a plurality of PCs;
the transmission medium part comprises a first LonWorks bus, a second LonWorks bus, a twisted pair and a coaxial cable;
each oil pressure sensor, the first signal isolator and the second signal isolator are connected with the first LonWorks bus, and each oil pressure sensor, the first signal isolator, the second signal isolator and the first LonWorks bus form a bus type topological structure together;
each liquid level sensor is connected with a third signal isolator through a twisted pair, and each liquid level sensor and the third signal isolator jointly form a star-shaped topological structure; each liquid level sensor is connected with the fourth signal isolator through a twisted pair, and each liquid level sensor and the fourth signal isolator jointly form a star-shaped topological structure;
each temperature sensor is connected with a fifth signal isolator through a twisted pair, each air pressure sensor is connected with a sixth signal isolator through a twisted pair, and the sixth signal isolator is connected with the fifth signal isolator through a twisted pair; each temperature sensor and each air pressure sensor jointly form a branch of the tree-shaped topological structure, and the fifth signal isolator and the sixth signal isolator jointly form a trunk of the tree-shaped topological structure;
the first to fifth signal isolators, the first PLC and the second PLC are all connected with a second LonWorks bus, and the first to fifth signal isolators, the first PLC, the second PLC and the second LonWorks bus form a bus type topological structure together;
the first PLC and the second PLC are both connected with the emergency stop switch through coaxial cables; the first PLC and the second PLC are both connected with the audible and visual alarm through coaxial cables; the first PLC, the PC machines and the second PLC are sequentially connected in series through coaxial cables to form a daisy chain topological structure.
In specific implementation, the oil pressure sensor is a QBE9001-P16 type oil pressure sensor; the liquid level sensor is an EE-SPX613 type liquid level sensor; the temperature sensor is an FGT-PT1000 type temperature sensor; the air pressure sensor is a QBE9000-P25 type air pressure sensor; the first to sixth signal isolators are all SFG-1114 type signal isolators; the first PLC and the second PLC are both S7-200 type PLCs; the audible and visual alarm is a YS-01H type audible and visual alarm; the twisted pair is a shielded twisted pair; the coaxial cable is a baseband coaxial cable.
Claims (2)
1. The utility model provides a screw air compressor machine fuel cut-off protection device for coal mine which characterized in that: comprising a terminal portion and a transmission medium portion;
the terminal part comprises a plurality of oil pressure sensors, a plurality of liquid level sensors, a plurality of temperature sensors, a plurality of air pressure sensors, first to sixth signal isolators, a first PLC, a second PLC, an emergency stop switch, an audible and visual alarm and a plurality of PCs;
the transmission medium part comprises a first LonWorks bus, a second LonWorks bus, a twisted pair and a coaxial cable;
each oil pressure sensor, the first signal isolator and the second signal isolator are connected with the first LonWorks bus, and each oil pressure sensor, the first signal isolator, the second signal isolator and the first LonWorks bus form a bus type topological structure together;
each liquid level sensor is connected with a third signal isolator through a twisted pair, and each liquid level sensor and the third signal isolator jointly form a star-shaped topological structure; each liquid level sensor is connected with the fourth signal isolator through a twisted pair, and each liquid level sensor and the fourth signal isolator jointly form a star-shaped topological structure;
each temperature sensor is connected with a fifth signal isolator through a twisted pair, each air pressure sensor is connected with a sixth signal isolator through a twisted pair, and the sixth signal isolator is connected with the fifth signal isolator through a twisted pair; each temperature sensor and each air pressure sensor jointly form a branch of the tree-shaped topological structure, and the fifth signal isolator and the sixth signal isolator jointly form a trunk of the tree-shaped topological structure;
the first to fifth signal isolators, the first PLC and the second PLC are all connected with a second LonWorks bus, and the first to fifth signal isolators, the first PLC, the second PLC and the second LonWorks bus form a bus type topological structure together;
the first PLC and the second PLC are both connected with the emergency stop switch through coaxial cables; the first PLC and the second PLC are both connected with the audible and visual alarm through coaxial cables; the first PLC, the PC machines and the second PLC are sequentially connected in series through coaxial cables to form a daisy chain topological structure.
2. The oil-break protection device for the screw air compressor for the coal mine according to claim 1, is characterized in that: the oil pressure sensor is a QBE9001-P16 type oil pressure sensor; the liquid level sensor is an EE-SPX613 type liquid level sensor; the temperature sensor is an FGT-PT1000 type temperature sensor; the air pressure sensor is a QBE9000-P25 type air pressure sensor; the first to sixth signal isolators are all SFG-1114 type signal isolators; the first PLC and the second PLC are both S7-200 type PLCs; the audible and visual alarm is a YS-01H type audible and visual alarm; the twisted pair is a shielded twisted pair; the coaxial cable is a baseband coaxial cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020193733.2U CN210865076U (en) | 2020-02-21 | 2020-02-21 | Oil-break protection device of screw air compressor for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020193733.2U CN210865076U (en) | 2020-02-21 | 2020-02-21 | Oil-break protection device of screw air compressor for coal mine |
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| Publication Number | Publication Date |
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| CN210865076U true CN210865076U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020193733.2U Expired - Fee Related CN210865076U (en) | 2020-02-21 | 2020-02-21 | Oil-break protection device of screw air compressor for coal mine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112114165A (en) * | 2020-10-17 | 2020-12-22 | 武汉城市职业学院 | Accelerometer calibration system based on hybrid topological structure |
| CN112114166A (en) * | 2020-10-17 | 2020-12-22 | 武汉城市职业学院 | Hybrid topology type accelerometer calibration system |
| CN112484782A (en) * | 2020-12-04 | 2021-03-12 | 武汉城市职业学院 | Hybrid topology type lake water quality monitoring system based on multi-rotor unmanned aerial vehicle |
-
2020
- 2020-02-21 CN CN202020193733.2U patent/CN210865076U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112114165A (en) * | 2020-10-17 | 2020-12-22 | 武汉城市职业学院 | Accelerometer calibration system based on hybrid topological structure |
| CN112114166A (en) * | 2020-10-17 | 2020-12-22 | 武汉城市职业学院 | Hybrid topology type accelerometer calibration system |
| CN112484782A (en) * | 2020-12-04 | 2021-03-12 | 武汉城市职业学院 | Hybrid topology type lake water quality monitoring system based on multi-rotor unmanned aerial vehicle |
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Granted publication date: 20200626 |