CN209764920U - Mining explosion-proof type electric energy quality monitoring device - Google Patents

Mining explosion-proof type electric energy quality monitoring device Download PDF

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Publication number
CN209764920U
CN209764920U CN201920391631.9U CN201920391631U CN209764920U CN 209764920 U CN209764920 U CN 209764920U CN 201920391631 U CN201920391631 U CN 201920391631U CN 209764920 U CN209764920 U CN 209764920U
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module
quality monitoring
storage battery
isolating switch
electric energy
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CN201920391631.9U
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Chinese (zh)
Inventor
李静雅
郭波
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Changzhi University
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Changzhi University
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Abstract

the utility model relates to a mining flame-proof type electric energy quality monitoring device, which belongs to the technical field of mining flame-proof type electric energy quality monitoring devices; the technical problem to be solved is as follows: providing a mining explosion-proof type electric energy quality monitoring device; the technical scheme for solving the technical problem is as follows: the cable quick connector comprises a body and a junction box, wherein a cable lead-in device is arranged on one side of the junction box, and a cable quick plug is arranged on the other side of the junction box; the body is of a box body structure, and a fork type wiring terminal is arranged at the front end of the body; an isolating switch and a storage battery are arranged on one side in the body box; the other side in the body box is provided with a contactor, a transformer, a rectifying module, a lithium ion storage battery monitoring module, an electric energy quality monitoring module and a power supply protection module; the inlet end of the isolating switch is connected with the fork type wiring terminal, the outlet end of the isolating switch is connected with the contactor, the action end of the isolating switch is linked with the shell locking device, and the shell locking device is linked with the front cover of the body; the utility model discloses be applied to mine power supply and detect the place.

Description

mining explosion-proof type electric energy quality monitoring device
Technical Field
The utility model relates to a mining flame-proof type electric energy quality monitoring devices belongs to mining flame-proof type electric energy quality monitoring devices technical field.
background
at present, the underground coal mine is energy-saving, a hoister, a fan and a conveyor are guaranteed to have good speed regulation performance, variable frequency speed regulation is adopted, a large amount of harmonic waves can be generated by using a high-power frequency converter, the harmonic waves are extremely harmful, when the harmonic waves pass through the mining transformer, vortex flow can be generated on a transformer iron core lamination by harmonic current, the transformer generates heat and loss, the service life is reduced, the malfunction probability of underground power supply equipment can be increased by the interference of the harmonic waves, the underground control system is caused to break down, unplanned power failure and wind stopping operation are caused, and the safe production of the mine is influenced.
The explosion-proof frequency converter is the main electrical equipment that the mine power supply produced the harmonic, for satisfying national electric energy quality requirement when ground is tested, can increase components such as reactor at frequency converter front end and rear end usually and reduce the harmonic pollution, and do not use the reactor when the actual installation in pit is used, thereby cause the harmonic content in the power supply system in the pit to increase, front end low pressure feed switch can be with the harmonic mistake as leakage current and carry out earth leakage protection, often unplanned separating brake, artifical combined floodgate inefficacy in the pit can cause unplanned power failure.
Whether the power quality of the underground power supply system meets the national standard or not is judged, and because an explosion-proof power quality monitoring device capable of directly descending the well is not available, the underground harmonic condition cannot be accurately monitored and fed back, and the underground power supply system is easy to have potential safety hazards.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: providing a mining explosion-proof type electric energy quality monitoring device; in order to solve the technical problem, the utility model discloses a technical scheme be: a mining explosion-proof type electric energy quality monitoring device comprises a body and a junction box, wherein a cable leading-in device is arranged on one side of the junction box, and a cable quick plug is arranged on the other side of the junction box;
The body is of a box body structure, and a fork type wiring terminal is arranged at the front end of the body;
an isolating switch and a storage battery are arranged on one side in the body box;
The other side in the body box is provided with a contactor, a transformer, a rectifying module, a lithium ion storage battery monitoring module, an electric energy quality monitoring module and a power supply protection module;
the inlet end of the isolating switch is connected with the fork type wiring terminal, the outlet end of the isolating switch is connected with the contactor, the action end of the isolating switch is linked with the shell locking device, and the shell locking device is linked with the front cover of the body;
The signal input end of the contactor is connected with the power supply protection module, and the output end of the contactor is connected to the primary side of the transformer;
the secondary side of the transformer respectively supplies power to a coil of the contactor, a power supply protection module, a rectification module and a lithium ion storage battery monitoring module;
The output end of the rectifying module is connected with the input end of a storage battery, the power supply input end of the power quality monitoring module is connected with the storage battery, and the signal input end of the lithium ion storage battery monitoring module is connected with the storage battery;
The signal input end of the power quality monitoring module is connected with a fork type wiring terminal, and the fork type wiring terminal is connected with a cable quick plug;
The signal output end of the power quality monitoring module is connected with the data communication module, the data communication module is connected with the cable quick plug, the cable quick plug is connected with the underground monitoring terminal through the RS485 field communication bus, and the underground monitoring terminal is connected with the ground scheduling server.
Two anti-locks are arranged at the front cover locking part of the body; the side wall of the body is also provided with an emergency stop button and an isolating switch handle.
the utility model discloses beneficial effect for prior art possesses does: the utility model provides an electric energy quality monitoring device, which uses a special explosion-proof box body to enable the device to have an explosion-proof function and can monitor and feed back the electric energy quality of a mine power supply line underground; through be provided with corresponding electric energy harmonic collection processing module in the box, can carry out real-time supervision to power supply system in the pit, especially the electric energy data of explosion-proof converter output, and can carry out the trouble through setting up corresponding isolator and contactor and cut off power supply circuit, the box is provided with quick-operation joint on external communication, support in the scene monitoring power supply electric energy data in the pit and unified upload to ground centralized dispatch center, make things convenient for technical staff's analysis and diagnosis, get rid of the operation hidden danger, reduce power supply system's fault incidence in the pit.
drawings
the invention will be further explained with reference to the drawings:
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic diagram of the circuit structure of the present invention;
FIG. 4 is a schematic view of the utility model;
in the figure: the system comprises a body 1, a junction box 2, a cable leading-in device 3, a cable quick plug 4, a fork type wiring terminal 5, a disconnecting switch 6, a storage battery 7, a contactor 8, a transformer 9, a rectifier module 10, a lithium ion storage battery monitoring module 11, an electric energy quality monitoring module 12, a power supply protection module 13, a data communication module 14, an underground monitoring terminal 15, a ground dispatching server 16, a double-prevention lock 17, an emergency stop button 18 and a disconnecting switch handle 19.
Detailed Description
as shown in fig. 1 to 4, the utility model relates to a mining flame-proof type electric energy quality monitoring device, which comprises a body 1 and a junction box 2, wherein one side of the junction box 2 is provided with a cable leading-in device 3, and the other side of the junction box 2 is provided with a cable quick plug 4;
the body 1 is of a box body structure, and a fork type wiring terminal 5 is arranged at the front end of the body 1;
An isolating switch 6 and a storage battery 7 are arranged on one side in the box of the body 1;
the other side in the box of the body 1 is provided with a contactor 8, a transformer 9, a rectifying module 10, a lithium ion storage battery monitoring module 11, an electric energy quality monitoring module 12 and a power supply protection module 13;
The inlet end of the isolating switch 6 is connected with the fork type wiring terminal 5, the outlet end of the isolating switch 6 is connected with the contactor 8, the action end of the isolating switch 6 is linked with the shell locking device, and the shell locking device is linked with the front cover of the body 1;
The signal input end of the contactor 8 is connected with a power supply protection module 13, and the output end of the contactor 8 is connected to the primary side of the transformer 9;
the secondary side of the transformer 9 supplies power to a coil of the contactor 8, a power supply protection module 13, a rectification module 10 and a lithium ion storage battery monitoring module 11 respectively;
The output end of the rectifying module 10 is connected with the input end of the storage battery 7, the power supply input end of the power quality monitoring module 12 is connected with the storage battery 7, and the signal input end of the lithium ion storage battery monitoring module 11 is connected with the storage battery 7;
The signal input end of the power quality monitoring module 12 is connected with a fork type wiring terminal 5, and the fork type wiring terminal 5 is connected with a cable quick plug 4;
The signal output end of the power quality monitoring module 12 is connected with the data communication module 14, the data communication module 14 is connected with the cable quick plug 4, the cable quick plug 4 is connected with the underground monitoring terminal 15 through an RS485 field communication bus, and the underground monitoring terminal 15 is connected with the ground scheduling server 16.
two anti-locks 17 are arranged at the front cover locking part of the body 1; the side wall of the body 1 is also provided with an emergency stop button 18 and an isolating switch handle 19.
Before the utility model is powered on, the contactor and the isolating switch and the door cover are required to satisfy the locking relationship, and then the corresponding protection function can be realized; the utility model discloses be different from ordinary power quality control feedback device, possess explosion-proof function, can monitor the power quality data of feedback power supply line in the pit.
the utility model provides a box body is internally provided with two explosion-proof cavities, namely a body and a junction box, a lithium ion storage battery monitoring module, an electric energy quality monitoring module and a power supply protection module are three data acquisition and processing modules arranged in the explosion-proof cavity of the body;
an inlet wire connecting terminal and a nine-core connecting terminal are mainly arranged in the inlet wire cavity of the body, 1140V or 660V voltage which is commonly used in the pit is connected to a fork type connecting terminal through a mine cable by a cable leading-in device, and the voltage is led into the body cavity to be connected with an isolating switch; the wire outlet cavity of the body is mainly provided with a nine-core wiring terminal, and all data exchange is realized by connecting a cable quick plug; the contactor and the isolating switch, the isolating switch and the shell locking device which are arranged in the body are respectively connected with an electric locking and a mechanical locking, the front cover can be opened after the power of the whole device is cut off, power can be supplied only after the front cover is closed, and the requirements of coal mine safety regulations and explosion-proof regulations are met safely.
The utility model discloses the contactor function that sets up is with isolator, make things convenient for the maintenance of all electrical components in the body intracavity to play the effect of breaking electric current, connect isolator contactor, contactor mainly accepts the command of power supply protection the control unit and carries out the separating brake combined floodgate operation, contactor connection transformer, the transformer has 1140V and 660V to take a percentage to make things convenient for the workman to carry out the wiring according to voltage in the pit on the primary side, there are three kinds of voltages of 110V, 90V and 36V on the secondary side for the relay, the contactor coil, power supply protection the control unit and rectifier module power supply, rectifier module accepts transformer secondary voltage to rectify and keep in the direct current input battery, the direct current power supply of battery supplies power to the power quality monitoring module; the lithium ion storage battery monitoring module is mainly used for monitoring the electric energy storage condition of the battery and charging the battery in due time, and the power supply protection module is mainly used for monitoring the voltage and the current of a primary loop to ensure that the primary loop meets the underground power supply protection requirement.
When the cable is used, the power quality monitoring module is led out of the power quality analysis test probe and enters the quick cable plug through the outgoing fork type terminal of the wiring cavity, the communication cable is connected into the incoming line cavity and is connected through the quick cable plug, the communication cable is uploaded to a terminal of the underground monitoring substation through the RS485 bus, and finally the communication cable is uploaded to a server of a ground centralized dispatching center.
The device can meet the underground explosion-proof requirement, realizes the electric energy quality monitoring of all underground power supply lines, particularly lines provided with frequency converters, can measure the harmonic distortion rate of three-phase voltage 2-63, the harmonic distortion rate of three-phase current 2-63, the inter-harmonic distortion rate of three-phase voltage, the inter-harmonic distortion rate of three-phase current, the total harmonic distortion rate of three-phase voltage, the total harmonic distortion rate of three-phase current, and can measure the unbalance of voltage and current, the amplitude values of zero sequence, positive sequence and negative sequence and the voltage deviation, and the data are uniformly displayed on a monitoring display screen of a background server, and simultaneously, a phase diagram of the voltage and the current is generated.
the utility model can meet the monitoring of the power quality of the underground power supply system, especially the monitoring of the harmonic content; the wiring chamber mainly includes: the cable lead-in device introduces 1140V or 660V voltage and enters the cavity of the body through the fork type wiring terminal to provide power supply, the quick cable plug is mainly connected with a probe and a communication line, and the fork type wiring terminal, the cable lead-in device and the quick cable plug must meet the mine explosion-proof requirement; the isolating switch handle, the emergency stop button and the two anti-locking electric locks and mechanical locks meet the requirement of opening the cover in the underground outage.
finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (2)

1. A mining flame-proof type electric energy quality monitoring device is characterized in that: the cable quick connector comprises a body (1) and a junction box (2), wherein a cable lead-in device (3) is arranged on one side of the junction box (2), and a cable quick plug (4) is arranged on the other side of the junction box (2);
The body (1) is of a box body structure, and a fork type wiring terminal (5) is arranged at the front end of the body (1);
An isolating switch (6) and a storage battery (7) are arranged on one side in the box of the body (1);
a contactor (8), a transformer (9), a rectification module (10), a lithium ion storage battery monitoring module (11), an electric energy quality monitoring module (12) and a power supply protection module (13) are arranged on the other side in the box of the body (1);
The inlet end of the isolating switch (6) is connected with the fork type wiring terminal (5), the outlet end of the isolating switch (6) is connected with the contactor (8), the action end of the isolating switch (6) is linked with the shell locking device, and the shell locking device is linked with the front cover of the body (1);
the signal input end of the contactor (8) is connected with a power supply protection module (13), and the output end of the contactor (8) is connected to the primary side of a transformer (9);
the secondary side of the transformer (9) supplies power to a coil of the contactor (8), a power supply protection module (13), a rectification module (10) and a lithium ion storage battery monitoring module (11) respectively;
The output end of the rectifying module (10) is connected with the input end of a storage battery (7), the power supply input end of the power quality monitoring module (12) is connected with the storage battery (7), and the signal input end of the lithium ion storage battery monitoring module (11) is connected with the storage battery (7);
The signal input end of the power quality monitoring module (12) is connected with a fork type wiring terminal (5), and the fork type wiring terminal (5) is connected with a cable quick plug (4);
The signal output end of the power quality monitoring module (12) is connected with the data communication module (14), the data communication module (14) is connected with the cable quick plug (4), the cable quick plug (4) is connected with the underground monitoring terminal (15) through an RS485 field communication bus, and the underground monitoring terminal (15) is connected with the ground scheduling server (16).
2. the mining explosion-proof type power quality monitoring device according to claim 1, characterized in that: two anti-locks (17) are arranged at the front cover locking position of the body (1); the side wall of the body (1) is also provided with an emergency stop button (18) and an isolating switch handle (19).
CN201920391631.9U 2019-03-26 2019-03-26 Mining explosion-proof type electric energy quality monitoring device Active CN209764920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920391631.9U CN209764920U (en) 2019-03-26 2019-03-26 Mining explosion-proof type electric energy quality monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920391631.9U CN209764920U (en) 2019-03-26 2019-03-26 Mining explosion-proof type electric energy quality monitoring device

Publications (1)

Publication Number Publication Date
CN209764920U true CN209764920U (en) 2019-12-10

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Application Number Title Priority Date Filing Date
CN201920391631.9U Active CN209764920U (en) 2019-03-26 2019-03-26 Mining explosion-proof type electric energy quality monitoring device

Country Status (1)

Country Link
CN (1) CN209764920U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111289821A (en) * 2020-02-28 2020-06-16 兖州东方机电有限公司 Coal mine underground power supply system electric energy quality monitoring device
CN111707894A (en) * 2020-06-19 2020-09-25 中国煤炭科工集团太原研究院有限公司 Mining electric energy quality on-line measuring system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111289821A (en) * 2020-02-28 2020-06-16 兖州东方机电有限公司 Coal mine underground power supply system electric energy quality monitoring device
CN111707894A (en) * 2020-06-19 2020-09-25 中国煤炭科工集团太原研究院有限公司 Mining electric energy quality on-line measuring system

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