CN101383499A - Water level detecting control protector of water pump for mining - Google Patents
Water level detecting control protector of water pump for mining Download PDFInfo
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- CN101383499A CN101383499A CNA200810196695XA CN200810196695A CN101383499A CN 101383499 A CN101383499 A CN 101383499A CN A200810196695X A CNA200810196695X A CN A200810196695XA CN 200810196695 A CN200810196695 A CN 200810196695A CN 101383499 A CN101383499 A CN 101383499A
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Abstract
The invention relates to a mine water pump water-level detecting and controlling protector which belongs to the technical field of the electronic control. The invention aims at providing the mine water pump water-level detecting and controlling protector which has the controlling and protecting functions of pumping with water and pump-stopping without water. The mine water pump water-level detecting and controlling protector has the technical key points that a voltage comparator (T3) in a water-level detecting and controlling circuit (3) obtains a reference voltage through a divider resistance, and an intrinsically safe comparison voltage is provided for the voltage comparator (T3) through taking water as a medium which is connected with an upper water-level probe, a lower water-level probe and a lead that is educed from the cathode of a voltage stabilizing circuit. When the water-level probes and the lead that is educed from the cathode of the voltage stabilizing circuit are contacted with water, a switch audion (T4) is communicated, a coil of a relay (J1) is electrified, a contact point (J1-1) is closed, and a water pump power supply is switched on, thereby the water pump is electrified and operated; when water is separated from the water-level probe and the lead that is educed from the cathode of the voltage stabilizing circuit, the switch audion (T4) is cut off, the coil of the relay is powered off, and the water pump power supply is cut off, thereby the water pump is broken off because of the loss of power.
Description
Technical field
The invention belongs to the special-purpose control protection of a kind of colliery down-hole water pump electrical equipment, specifically is a kind of water level detecting control protector of water pump for mining.
Background technology
At present, in the China's coal-mine down-hole, the size of mine anti-explosion water pump capacity no matter all need manually be started and stopped.It is that shortcoming is: after water was exhausted, if can not in time stop, water pump dallied for a long time, certainly will cause the temperature of water pump coil to raise, thereby caused the scaling loss of water pump.
For the temperature that solves the water pump coil that water pump causes because of lack of water idle running raises, cause the scaling loss of water pump, people have added temperature-sensitive element in the water pump coil, utilize water pump coil inside variation of temperature, protect water pump.But, since the rising of water pump coil inside temperature, the insulation of destructible coil windings, thereby can not effectively protect water pump.
The starter of the water pump for mining setting that has has: control and defencive function that water turn on pump, anhydrous termination of pumping are arranged.Because starter will carry out the pairing of electric pressure, capacity with water pump, it is inconvenient to cause it to use, and in use, occurs low load with strong power phenomenon (promptly selecting for use jumbo starter to control and protect the water pump of low capacity) mostly but in use.
Summary of the invention
The problem that the present invention need solve is: a kind of water level detecting control protector of water pump for mining is provided; it had both had control and the defencive function that water turn on pump, anhydrous termination of pumping are arranged; also can match, and not be subjected to the restriction of water pump capacity with the starter or the feeding switch of any electric pressure.
Its technical scheme is: a kind of water level detecting control protector of water pump for mining, comprise current rectifying and wave filtering circuit, voltage stabilizing circuit and water level detecting and controlling circuit, it is characterized in that: described water level detecting and controlling circuit is made of voltage comparator, switch triode and relay, the positive input terminal of voltage comparator is connected with the contact of divider resistance on being connected on voltage-stabilizing output circuit, and its negative input end is with to be connected on voltage-stabilizing output circuit anodal and place the contact of the divider resistance between the last water-level probe of water to be connected; The output of voltage comparator is connected with the base stage of switch triode, and the collector electrode of triode is connected with the positive pole of voltage-stabilizing output circuit by the coil of relay, and its emitter is connected with the negative pole of voltage-stabilizing output circuit; Two contacts in first normal opened contact of relay are serially connected in respectively in the control loop of the starter of control of pump or feeding switch, and two contacts in second normal opened contact are connected with the end of the last water-level probe that places water with following water-level probe lead-in wire respectively; The negative pole of voltage stabilizing circuit is drawn by lead as ground wire, puts into the bottom.
Its technique effect is: because two contacts in first normal opened contact of water level detecting and controlling circuit relay electrical equipment are to be serially connected in respectively in the control loop of the starter of control of pump or feeding switch, so unlatching of water pump or close by relay and control, and whether relay tip closed or disconnect is switched on by relay coil again and is decided; Simultaneously, because relay coil is to be connected on the collector circuit of switch triode, and the conducting of switch triode or by being that voltage by the voltage comparator input decides.Thereby as long as the voltage of control voltage comparator input, unlatching that can control of pump or close.Just because of this; this control protector provides a reference voltage by divider resistance to voltage comparator on the one hand; on the other hand, the medium that the lead of drawing as upper and lower water-level probe and voltage stabilizing circuit negative pole by water is connected is for voltage comparator provides a comparative voltage.Therefore, when the lead of drawing by water and voltage stabilizing circuit negative pole when last water-level probe line contacts, the switch triode conducting, be connected on the relay coil energising on the switch triode collector circuit, its first, second, third normal opened contact closure, the control loop of starting of pump station device or feeding switch is connected, and water pump gets electric operation; Instantly after the water-level probe line lead of drawing by water and voltage stabilizing circuit negative pole is separated, switch triode ends, be connected on the relay coil outage on the collector circuit of switch triode, its first, second, third normal opened contact disconnects, the control loop of starting of pump station device or feeding switch is cut off, the stall of water pump dead electricity, thus realize the purpose that water pump " has the automatic turn on pump of water, anhydrous pump trip ".And its both can with the starter or the supporting use of feeding switch of any electric pressure, be not subjected to the restriction of water pump capacity yet; In addition, its circuit structure is simple, and cost is low, and is safe and reliable.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present invention;
Fig. 2 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of water level detecting control protector of water pump for mining, the voltage stabilizing circuit 2 that have current rectifying and wave filtering circuit 1, constitutes by pressurizer T1 and T2 and constitute water level detecting and controlling protective circuit 3 by voltage comparator, switch triode and relay.The positive input terminal of voltage comparator T3 (also can be the operational amplifier OR circuit) is connected with divider resistance R3, the contact of R4 on being connected on voltage-stabilizing output circuit, its negative input end be connected on the divider resistance R5 between the anodal and last water-level probe 7 of voltage-stabilizing output circuit, the contact of R6 is connected.The output of voltage comparator is connected with the base stage of switch triode T4, and the collector electrode of triode is connected with the positive pole of voltage-stabilizing output circuit by the coil of relay J 1, and its emitter is connected with the negative pole of voltage-stabilizing output circuit; Two contacts among the first normal opened contact J1-1 of relay are serially connected in respectively in the control loop of the starter of control of pump or feeding switch, and two contacts among the second normal opened contact J1-2 are connected with the end of last water-level probe 7 with following water-level probe 8 lead-in wires respectively.The negative pole of voltage stabilizing circuit is drawn by lead 9 as ground wire, puts into the bottom.
Two contacts among the 3rd normal opened contact J1-3 of relay J 1 with have water running display lamp D1 to be serially connected on the voltage-stabilizing output circuit.
Consider that above-mentioned water level detecting control protector of water pump for mining is to use environment occasion special under coal mine; therefore; it is installed in the housing 4 with explosion-proof chamber and safe chamber; current rectifying and wave filtering circuit 1 and voltage stabilizing circuit 2 are installed in the explosion-proof chamber, water level detecting and controlling protective circuit 3 is installed in the safe chamber.Transformer B primary coil lead-in wire inserts and runs through the inside and outside communicating joint 61 of explosion-proof chamber in the current rectifying and wave filtering circuit, and communicating joint is connected with loudspeaker mouth 51 couplings of outside incoming transport power line.The output line of voltage stabilizing circuit 2 is by being incorporated into communicating joint and cooperating of loudspeaker mouth on the water level detecting and controlling circuit in the safe chamber.Safe chamber is drawn by communicating joint 62 respectively in two contacts among first normal opened contact J1-1 of the relay J 1 in the safe chamber, and the lead-in wire coupling that inserts on the control loop of the starter of control of pump of loudspeaker mouth 52 or feeding switch with the outside is connected.Safe chamber also respectively by communicating joint, is drawn in two contacts among second normal opened contact J1-2 of the relay J 1 in the safe chamber, and last water-level probe 7 lead-in wires and the following water-level probe that insert the loudspeaker mouth with the outside go between corresponding the connection.The negative pole of voltage stabilizing circuit inserts communicating joint 63 as ground wire by lead 9 and draws safe chamber, and the water-bed lead of putting into that inserts loudspeaker mouth 53 with the outside is connected.Housing is provided with handle 10, so that carry.
Its operation principle: during use, the first lead 9 that the negative pole of voltage-stabilizing output circuit is drawn is with descending water-level probe 8 to place the following water level of water, last water-level probe 7 is placed the last water level of water, again two contacts among the first contact J1-1 of relay J 1 are serially connected in respectively in the control loop of the starter of control of pump or feeding switch, connect the power supply of rectifier at last.Exchange the 36V power supply and be added on the rectifier, after rectification, filtering, export the voltage stabilizing circuit that constitutes by two-stage pressurizer T1, T2 to through rectifier transformer B output AC 15V.Output direct current 12V supplies with water level detecting and controlling circuit 3 as its working power after the voltage stabilizing.The positive input terminal of voltage comparator T3 obtains a door level signal V1=6V after passing through resistance R 3, R4 dividing potential drop.When lead 9 short circuits that last water-level probe 7 is drawn by aqueous medium and voltage-stabilizing output circuit negative pole, a level signal V2＜6V is provided for the negative input end of voltage comparator; Make to make switch triode T4 be in the saturation conduction state in level signal V3 ≈ 12V of T3 output or " 1 ", T4 output low level signal V4 ≈ 0V or " 0 ", the coil of relay J 1 has electric current to pass through, and its contact J1-1, J1-2, J1-3 are all closed.Water pump gets electric, starting operation, and last water-level probe 7 and following water-level probe 8 short circuits have water running display lamp D1 to light.
Along with pump operation draws water, water level is in continuous decline.When decline of water table when down water-level probe exposes horizontal plane; the lead that the negative pole of following water-level probe and voltage-stabilizing output circuit is drawn disconnects; connection by aqueous medium between the two disconnects; make the negative input end of voltage comparator obtain a high level signal V2 ≈ 12V; voltage comparator is output as a low level signal V3 ≈ 0V or " 0 "; make switch triode T4 be in cut-off state; the coil no current of relay J 1 passes through; its contact J1-1; J1-2; J1-3 all disconnects; the water pump stall; there is the water running display lamp to go out, thereby realized the control and the defencive function of " anhydrous pump trip ".
Claims (3)
1, water level detecting control protector of water pump for mining, comprise intrinsic safety transformer, current rectifying and wave filtering circuit, voltage stabilizing circuit and water level detecting and controlling circuit, it is characterized in that: described water level detecting and controlling circuit (3) is made of voltage comparator, switch triode and relay, the positive input terminal of voltage comparator (T3) is connected with the contact of divider resistance (R3, R4) on being connected on voltage-stabilizing output circuit, and its negative input end is with to be connected on voltage-stabilizing output circuit anodal and place the contact of the divider resistance (R5, R6) between the last water-level probe of water to be connected; The output of voltage comparator is connected with the base stage of switch triode (T4), and the collector electrode of triode is connected with the positive pole of voltage-stabilizing output circuit by the coil of relay (J1), and its emitter is connected with the negative pole of voltage-stabilizing output circuit; Two contacts in first normal opened contact (J1-1) of relay (J1) are serially connected in respectively in the control loop of the starter of control of pump or feeding switch; Two contacts in second normal opened contact (J1-2) are connected with the end of the last water-level probe (7) that places water with following water-level probe (8) lead-in wire respectively; The negative pole of voltage stabilizing circuit (2) is drawn by lead (9) as ground wire, puts into the bottom.
2, water level detecting control protector of water pump for mining according to claim 1 is characterized in that: two contacts in the 3rd normal opened contact (J1-3) of described relay (J1) with have water running display lamp (D1) to be serially connected on the voltage-stabilizing output circuit.
3, water level detecting control protector of water pump for mining according to claim 1, it is characterized in that: described water level detecting control protector of water pump for mining is installed in the housing (4) with explosion-proof chamber and safe chamber, intrinsic safety transformer, current rectifying and wave filtering circuit (1) and voltage stabilizing circuit (2) are installed in the explosion-proof chamber (41), water level detecting and controlling protective circuit (3) is installed in safe chamber (42); Transformer in the current rectifying and wave filtering circuit (B) primary coil lead-in wire inserts and runs through the inside and outside communicating joint (61) of explosion-proof chamber, and communicating joint is connected with loudspeaker mouth (51) coupling of outside incoming transport power line; The output line of voltage stabilizing circuit (2) is by being incorporated into communicating joint and cooperating of loudspeaker mouth on the water level detecting and controlling protective circuit in the safe chamber; Safe chamber is drawn by communicating joint (62) respectively in two contacts in first normal opened contact (J1-1) of relay in the safe chamber (J1), and the lead-in wire coupling that inserts on the control loop of the starter of control of pump of loudspeaker mouths (52) or feeding switch with the outside is connected; Safe chamber also respectively by communicating joint, is drawn in two contacts in second normal opened contact (J1-2) of the relay in the safe chamber, and last water-level probe (7) lead-in wire and the following water-level probe that place water that insert the loudspeaker mouth with the outside go between corresponding the connection; The negative pole of voltage stabilizing circuit inserts communicating joint (63) as ground wire by lead (9) and draws safe chamber, and the water-bed lead of putting into that inserts loudspeaker mouths (53) with the outside is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810196695XA CN101383499A (en) | 2008-09-17 | 2008-09-17 | Water level detecting control protector of water pump for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810196695XA CN101383499A (en) | 2008-09-17 | 2008-09-17 | Water level detecting control protector of water pump for mining |
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| CN101383499A true CN101383499A (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA200810196695XA Pending CN101383499A (en) | 2008-09-17 | 2008-09-17 | Water level detecting control protector of water pump for mining |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576709A (en) * | 2013-11-09 | 2014-02-12 | 安徽神剑新材料股份有限公司 | Automatic water feeding device for QUV accelerated aging instrument |
| CN104181943A (en) * | 2013-05-28 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Water-filling alarm system |
| CN104180867A (en) * | 2013-05-27 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Water level monitoring system |
| CN108678137A (en) * | 2018-04-30 | 2018-10-19 | 阜阳电力规划设计院有限公司 | It is a kind of based on solar powered cable shaft intelligent drainage system |
| CN111852835A (en) * | 2020-08-18 | 2020-10-30 | 江阴市博今环保设备有限公司 | Water pump water-break protection device and method |
-
2008
- 2008-09-17 CN CNA200810196695XA patent/CN101383499A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180867A (en) * | 2013-05-27 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Water level monitoring system |
| CN104181943A (en) * | 2013-05-28 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Water-filling alarm system |
| CN103576709A (en) * | 2013-11-09 | 2014-02-12 | 安徽神剑新材料股份有限公司 | Automatic water feeding device for QUV accelerated aging instrument |
| CN108678137A (en) * | 2018-04-30 | 2018-10-19 | 阜阳电力规划设计院有限公司 | It is a kind of based on solar powered cable shaft intelligent drainage system |
| CN111852835A (en) * | 2020-08-18 | 2020-10-30 | 江阴市博今环保设备有限公司 | Water pump water-break protection device and method |
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Open date: 20090311 |