CN204386640U

CN204386640U - A kind of gas suction pump underrun alarm and power-failure protection device

Info

Publication number: CN204386640U
Application number: CN201420797586.4U
Authority: CN
Inventors: 张跃; 成洪江; 贾孝平
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-12-17
Filing date: 2014-12-17
Publication date: 2015-06-10
Anticipated expiration: 2024-12-17

Abstract

A kind of gas suction pump underrun of the utility model alarm and power-failure protection device, belongs to the technical field of gas suction pump monitoring; The technical problem solved is: provide a kind of and can carry out Real-Time Monitoring to the running status of gas suction pump and can carry out the protective device of underrun warning power-off to gas suction pump; The technical scheme adopted is: a kind of gas suction pump underrun alarm and power-failure protection device, comprise: motor M 1, it is characterized in that: the power circuit of described motor M 1 is provided with current transformer L1, the output of described current transformer L1 is connected with the sampling end of current transducer D1, the described output of current transducer D1 is connected with the sampling end of PLC, the power end of described PLC is all connected with the output of power module with the power end of described current transducer D1, and the input of described power module is connected with 220V civil power; Be applicable to gas suction pump field.

Description

A kind of gas suction pump underrun alarm and power-failure protection device

Technical field

A kind of gas suction pump underrun of the utility model alarm and power-failure protection device, belongs to the technical field of gas suction pump monitoring.

Background technology

When mining in colliery, all can exist a large amount of in adsorbed state with the gas of free state in mine, these gas result from the process of coal coal-forming, belong to inflammable, explosive, poisonous asphyxiant gas, personnel can be caused during excessive concentration to suffocate even dead, and likely cause the accident such as mine fire, gas explosion, huge threat is brought to the life security of underground operators, also serious economic loss can be caused, therefore, Gas Disaster has become the key factor threatening mine safety, restriction Mine development.

Want to solve Gas Disaster problem, the gas density in mine must be reduced, the mode generally adopted at present is: utilize the gas that gas suction pump comes in extraction mine, to reduce its concentration, but find in actual moving process: the phenomenons such as the Buddhist nun's human relations rod between the motor of gas suction pump and reducer cuts off, feed pump fault, water level in the gas drainage under suction pump housing is easily caused to reduce, make gas suction pump occur underload phenomenon, cause gas drainage under suction pump shutdown or negative pressure deficiency, and then cause mining face under mine gas density to transfinite, directly threaten mine safety production; For eliminating this potential safety hazard, a kind of gas drainage under suction pump operation alarm and power-failure protection device possessing underload defencive function just seem have particularly important.

Utility model content

The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: provide a kind of and can carry out Real-Time Monitoring to the running status of gas suction pump and can carry out the protective device of underrun warning power-off to gas suction pump.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of gas suction pump underrun of the utility model alarm and power-failure protection device, comprise: motor M 1, the power circuit of described motor M 1 is provided with current transformer L1, the output of described current transformer L1 is connected with the sampling end of current transducer D1, the described output of current transducer D1 is connected with the sampling end of PLC, the power end of described PLC is all connected with the output of power module with the power end of described current transducer D1, the input of described power module is connected with 220V civil power,

First output of described PLC is provided with and controls the first K switch 1 that is closed and that open by the low and high level of the first output, second output of described PLC is provided with and controls second switch K2 that is closed and that open by the low and high level of the second output, described first K switch 1, the coil J1.1 of relay J 1 and electric forming loop, described 220V city, described second switch K2, the coil J2.1 of relay J 2 and electric forming loop, described 220V city, the constant open contact J1.2 of described relay J 1, signal lamp HD1 and described power module form loop, the constant open contact J2.2 of described relay J 2 is attempted by the two ends of the constant open contact J1.2 of described relay J 1, the two ends of described signal lamp HD1 are also connected to roars of laughter ring device DL1, the constant open contact J2.3 of described relay J 2 is attempted by the two ends for controlling motor M 1 gauge tap K3 out of service.

Gauge tap K3 described in the utility model is arranged in the supply line of described motor M 1; Described current transformer L1 is 200/5 current transformer.

The utility model compared with prior art has following beneficial effect:

The utility model comprises: motor M 1, the power circuit of described motor M 1 is provided with current transformer L1, the output of described current transformer L1 is connected with the sampling end of current transducer D1, and the described output of current transducer D1 is connected with the sampling end of PLC; The running current signal of heavy-duty motor M1 can be reduced into the voltage signal that PLC can be accessed by scope by the utility model on year-on-year basis, can Real-Time Monitoring motor operating current state by PLC, and different threshold values can be set according to motor practical operation situation, achieve the real-time detection of motor operating state; When detecting current value lower than 70A, the first output of PLC is closed by control first K switch 1, the coil J1.1 of relay J 1 and constant open contact J1.2 is closed, signal lamp HD1 lights, fools ring device DL1 alarm sounds; When detecting current value lower than 40A, second output of PLC closes by controlling second switch K2, the coil J2.1 of relay J 2 and constant open contact J2.2 is closed, signal lamp HD1 lights, fool ring device DL1 alarm sounds, simultaneously, the constant open contact of relay J 2 also J2.3 closes, and the supply line making to be arranged at described motor M 1 closes for controlling motor M 1 gauge tap K3 out of service, and motor M 1 is out of service; This apparatus structure is simple, effectively can prevent the mining face under mine gas density overrun issues because gas suction pump underrun causes, ensure the safety in production of mine.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in more detail;

Fig. 1 is circuit theory diagrams of the present utility model;

In figure: 1 is PLC, and 2 is power module.

Detailed description of the invention

As shown in Figure 1, a kind of gas suction pump underrun of the utility model alarm and power-failure protection device, comprise: motor M 1, the power circuit of described motor M 1 is provided with current transformer L1, the output of described current transformer L1 is connected with the sampling end of current transducer D1, the output of described current transducer D1 is connected with the sampling end of PLC 1, the power end of described PLC 1 is all connected with the output of power module 2 with the power end of described current transducer D1, and the input of described power module 2 is connected with 220V civil power; Described current transformer L1 is 200/5 current transformer;

First output of described PLC 1 is provided with and controls the first K switch 1 that is closed and that open by the low and high level of the first output, second output of described PLC 1 is provided with and controls second switch K2 that is closed and that open by the low and high level of the second output, described first K switch 1, the coil J1.1 of relay J 1 and electric forming loop, described 220V city, described second switch K2, the coil J2.1 of relay J 2 and electric forming loop, described 220V city, the constant open contact J1.2 of described relay J 1, signal lamp HD1 and described power module 2 form loop, the constant open contact J2.2 of described relay J 2 is attempted by the two ends of the constant open contact J1.2 of described relay J 1, the two ends of described signal lamp HD1 are also connected to roars of laughter ring device DL1, the constant open contact J2.3 of described relay J 2 is attempted by the two ends for controlling motor M 1 gauge tap K3 out of service.

In the present embodiment, described current transformer L1 is 200/5 current transformer, can be arranged on the arbitrary phase power line of motor M 1 explosion-proof gauge tap load side, the running current of motor in real time M1, and be transported on current transducer D1, the analog signal of 0 ~ 5A is converted to 0 ~ 3V voltage signal that PLC 1 can be accessed by scope by current transducer D1, makes described PLC 1 can judge the size of the running current of motor M 1 according to the voltage signal of input;

Particularly, electric current when described motor M 1 is normally run is 85A, when motor M 1 running current is less than 70A, first output of PLC 1 is closed by control first K switch 1, the coil J1.1 of relay J 1 and constant open contact J1.2 is closed, signal lamp HD1 lights, fool ring device DL1 alarm sounds, can operating personnel be reminded in time to check reason and process, further, when motor M 1 electric current is lower than 40A, second output of PLC closes by controlling second switch K2, the coil J2.1 of relay J 2 and constant open contact J2.2 is closed, signal lamp HD1 lights, roars of laughter ring device DL1 alarm sounds, simultaneously, also J2.3 is closed for the constant open contact of relay J 2, the supply line making to be arranged at described motor M 1 closes for controlling motor M 1 gauge tap K3 out of service, motor M 1 is out of service, the mining face under mine gas density that can effectively prevent Yin Wasi pump shutdown or negative pressure deficiency from causing transfinites, ensure the safety in production of mine.

The utility model provides a kind of gas suction pump underrun alarm and power-failure protection device, this device can carry out power-off protection to multiple gas drainage under suction pump motor simultaneously, solve traditional gas suction pump warning device can not carry out underrun warning power-off problem to gas suction pump, there is outstanding substantive distinguishing features and significant progress; By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.

Claims

1. a gas suction pump underrun alarm and power-failure protection device, comprise: motor M 1, it is characterized in that: the power circuit of described motor M 1 is provided with current transformer L1, the output of described current transformer L1 is connected with the sampling end of current transducer D1, the output of described current transducer D1 is connected with the sampling end of PLC (1), the power end of described PLC (1) is all connected with the output of power module (2) with the power end of described current transducer D1, and the input of described power module (2) is connected with 220V civil power;

First output of described PLC (1) is provided with and controls the first K switch 1 that is closed and that open by the low and high level of the first output, second output of described PLC (1) is provided with and controls second switch K2 that is closed and that open by the low and high level of the second output, described first K switch 1, the coil J1.1 of relay J 1 and electric forming loop, described 220V city, described second switch K2, the coil J2.1 of relay J 2 and electric forming loop, described 220V city, the constant open contact J1.2 of described relay J 1, signal lamp HD1 and described power module (2) form loop, the constant open contact J2.2 of described relay J 2 is attempted by the two ends of the constant open contact J1.2 of described relay J 1, the two ends of described signal lamp HD1 are also connected to roars of laughter ring device DL1, the constant open contact J2.3 of described relay J 2 is attempted by the two ends for controlling motor M 1 gauge tap K3 out of service.

2. a kind of gas suction pump underrun alarm and power-failure protection device according to claim 1, is characterized in that: described gauge tap K3 is arranged in the supply line of described motor M 1.

3. a kind of gas suction pump underrun alarm and power-failure protection device according to claim 1, is characterized in that: described current transformer L1 is 200/5 current transformer.