CN201247396Y

CN201247396Y - Wattless detection power supply energy-saving device for mine and mine car

Info

Publication number: CN201247396Y
Application number: CNU2008200131243U
Authority: CN
Inventors: 刘杰; 吴鹏; 赵志刚; 王晨
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-23
Filing date: 2008-05-23
Publication date: 2009-05-27
Anticipated expiration: 2018-05-23

Abstract

The utility model provides a mine tramcar reactive detection power supply energy saving device, which relates to a mining equipment power supply system, and comprises a PLC main control module, an actuator, a request power supply current detection module and a practical power supply current detection module, wherein safe voltage which is added in a power supply circuit of a tramcar is used to detect whether the tramcar needs to be supplied power by using the current detection technology. When the tramcar is connected with a circuit to prepare to work and needs to be supplied power, safe voltage U and a tramcar resistance R are formed into a closed loop, feeble current exists in the circuit, the current is captured by a feeble current sensor, different current threshold values are arranged according to production working condition, and control signals are sent out by the current threshold values. The other problem is that power supply needs to be cut, the current detection technology which is called practical power supply current detection is also used, the current which is sent to power supply circuits of the tramcar is detected by a strong current sensor, and the operation of the tramcar is judged to supply power according to the size of the current. The mining equipment power supply system has the advantages of saving a lot of energy source, and achieves safe electricity utilization.

Description

The mine mine car is idle detection power supply energy-saving device

Technical field

The utility model relates to a kind of mining equiment electric power system, is suitable for the energy-conservation power supply of the idle detection of mine mine car and uses.

Technical background

At present, transporting the main means of transport of ore at each big metal mine is mine car, the electric power system of mine car seems relatively backward, the main transformer-supplied that adopts, transformer is after pressure regulation, export direct current supply after utilizing silicon controlled rectifier, this kind electric supply installation advantage is simple in structure, easy to install, but its deficiency is: its electric power system of whether working of the mine car in the mine all is in supply condition, just exist the reactive loss of electric energy and circuit electric energy to reveal in idle most of the time at mine car like this, bring hidden danger electric energy loss simultaneously serious not only for workman's safety.

Summary of the invention

For overcoming the deficiency of above-mentioned electric supply installation, the purpose of this utility model is carried the idle detection power supply energy-saving device of arch a kind of mine mine car, utilization is when mine car is non-electric, the power supply supply is broken automatically, automatic power when mine car preliminary work need be powered, to reach energy savings, bring reliable assurance for the downhole safety operation.

Structural design of the present utility model is achieved in that the scheme of this technology of solution is the control outage and send, when detect mine car needs, also to detect mine car and when not need electricity consumption, so just may carry out the supply and the shutoff of power supply as required, technical matters in fact to be solved is exactly how to detect mine car whether to need electricity consumption.

For solving the detection that the transportation mine car need be powered, adopt current detection technology, here being called the request supply current detects, specifically having added a safe voltage at the feed circuit of mine car is used to detect mine truck and whether needs power supply, when mine car place in circuit preliminary work need be powered, by safe voltage U, the car resistance R has constituted a closed-loop path, according to Ohm law, just there has been a weak current to exist in the circuit, adopt weak current sensor to pounce on and catch this electric current, this sensor can be provided with pounces on the threshold values of catching electric current, according to the actual production operating mode different current threshold is set, and has so just solved this technical matters; The another one problem; be exactly when mine truck has not been worked; need to turn-off power supply; the same current detection technology that adopts; be called the actual power current detecting here; employing heavy current sensor detects the electric current to mine car supply line; can judge when whether mine car operation and mine car operation are arranged in the mine whether be unloaded or fully loaded according to the size of electric current; continued power is provided; can decision circuitry whether transship or short circuit by the actual power current detecting simultaneously, so in time power-off protection power-supply unit and realization safety utilization of electric power.

The utility model circuit structure includes PLC main control module, topworks, request supply current detection module and actual power current detection module, these four modules organically combine and realize allomeric function, its structure is: with PLC main control module is the center, its voltage output interface is connected with the topworks input end, PLC main control module one input end is connected with the heavy current sensor voltage output terminal of actual power current detection module, another input end is connected with another voltage output end of heavy current sensor of actual power current detection module, and a PLC main control module input end again is connected with the low current sensor voltage output end of request supply current detection module; The heavy current sensor reversal input end of actual power current detection module is connected with mine truck line current transformer current output terminal; The low current sensor electric current positive input terminal of request supply current detection module is connected with actual power current detecting part current output terminal, and another negative current input end of low current sensor is connected with the mine car circuit through diode; PLC main control module voltage output terminal directly connects the mine car switching circuit of power supply by topworks, the control circuit switch.(as shown in Figure 2)

Advantage of the present utility model: this device beneficial effect is saved a large amount of energy, has realized safety utilization of electric power, helps bargh and develops to automatized energy-saving.

Description of drawings

Fig. 1 is the idle detection power supply energy-saving device of a mine mine car circuit block diagram;

Fig. 2 is the idle detection power supply energy-saving device of a mine mine car electrical schematic diagram.

Embodiment

The utility model circuit working principle, detailed structure in conjunction with the accompanying drawings, embodiment is illustrated.

Its structure as shown in drawings, the mine is made up of four modules with the idle detection energy saver of mine truck, they are respectively PLC main control module, topworks, request supply current detection module and actual power current detection module, these four modules organically combine and realize allomeric function, pass between each module is: the real-time detection line electric current of request supply current detection module, when occurring mine truck in the circuit and want electric current, 24 volts of high level digital signals of this module output, this signal is given PLC main control module, and the PLC control executing mechanism makes electric supply installation to line powering.Line current is detected in real time in line powering, utilizing the actual current test section, when actual current during less than the work on the spot current threshold, this module is sent 24 volts of high level digital signals to the PLC main control module, the PLC control executing mechanism is cut off the electricity supply, when actual current during greater than supply current upper limit threshold values this module send another 24 volts of high level digital signals to the PLC main control module, the PLC control executing mechanism is cut off the electricity supply and is realized the protection outage;

The concrete intermodule annexation of this device as shown in Figure 2, in the request supply current detection module, detecting required safe voltage is shown by the transforming circuit in the module, promptly 380 volts of on-the-spot line voltages are added on the circuit by diode D3 through rectification and capacitance-resistance voltage stabilizing, low current sensor is WBK4V3DU01, be serially connected in this circuit by I+ and I-, be used for detecting the request supply current, it detects output

Voltage signal is exported to the Input3 of PLC by Vout.The heavy current sensor is WB1222F21, it is inductosyn, it comes the actual use of detection line electric current by inductive coil, when actual current during less than the work on the spot current threshold, give the Input1 of PLC by the Vout1 output voltage signal, when actual current during greater than supply current upper limit threshold values, finish the signal transmission for the Input2 of PLC by the Vout2 output voltage signal, the PLC main control module drives the contactless contactor power supply by the Vout pilot relay K1 of this module, and the power supply of mine car power supply is provided.

Claims

1. the idle detection power supply energy-saving device of a mine mine car, it is characterized in that: this device includes PLC main control module, topworks, request supply current detection module and actual power current detection module, its structure is: with PLC main control module is the center, its voltage output interface is connected with the topworks input end, PLC main control module one input end is connected with the heavy current sensor voltage output terminal of actual power current detection module, another input end is connected with another voltage output end of heavy current sensor of actual power current detection module, and a PLC main control module input end again is connected with the low current sensor voltage output end of request supply current detection module; The heavy current sensor reversal input end of actual power current detection module is connected with mine truck line current transformer current output terminal; The low current sensor electric current positive input terminal of request supply current detection module is connected with actual power current detecting part current output terminal, and another negative current input end of low current sensor is connected with the mine car circuit through diode; PLC main control module voltage output terminal directly connects the mine car switching circuit of power supply by topworks.

2. by the idle detection power supply energy-saving device of the described mine of claim 1 mine car, it is characterized in that the PLC main control module connects the contactless contactor power supply by the Vout pilot relay K1 of this module.