CN109404042A - A kind of mining automatic drainage device - Google Patents
A kind of mining automatic drainage device Download PDFInfo
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- CN109404042A CN109404042A CN201811379756.6A CN201811379756A CN109404042A CN 109404042 A CN109404042 A CN 109404042A CN 201811379756 A CN201811379756 A CN 201811379756A CN 109404042 A CN109404042 A CN 109404042A
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- 238000005065 mining Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 193
- 239000007858 starting material Substances 0.000 claims abstract description 14
- 230000001012 protector Effects 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of mining automatic drainage devices, including automatic drain system and the Auto-drainage control circuit being connect with automatic drain system, the drainage system includes QBZ-80 electromagnetic starter, water level controller and the interior plash equipped with high water level sensor, low water level sensor and electric pump, QBZ-80 electromagnetic starter one end and one end of electric pump connect, the other end of the electric pump connects drainpipe by non-return valve, and the other end of QBZ-80 electromagnetic start is connect with high water level sensor and low water level sensor respectively by water level controller；The Auto-drainage control circuit includes electric pump main control loop and water level control circuit.It is small that the present invention solves existing drainage arrangement capacity, drainability deficiency problem.Monitoring water level and automatic control circuit are separated and are fabricated to essential safe type water level controller by the present invention, which can automatically control electromagnetic starter according to plash water level height, realize the mining automatic drainage device of automatic drainage function.
Description
Technical field
The present invention relates to a kind of drainage arrangements, and in particular to a kind of mining automatic drainage device.
Background technique
Existing self-draining arrangement can detect automatically according to water level height in plash and control electric pump starting, stop,
To realize Auto-drainage.Because special equipment investment is big, standby redundancy is inconvenient, and the reasons such as difficult in maintenance are promoted not open.Consider
It is underground common electric equipment to QBZ-80 electromagnetic starter, the advantages such as versatility is good, and working service facilitates are widely used.
Make QBZ-80 electromagnetic starter that there is automatic drainage function by technological transformation.
Summary of the invention
To solve existing self-draining arrangement poor universality, make QBZ-80 electromagnetic starter that there is automatic drainage function, originally
Monitoring water level and automatic control circuit are separated on the basis of existing drainage arrangement and are fabricated to essential safe type water by invention
Level controller, the water level controller can automatically control electromagnetic starter according to plash water level height, open to control water pump
Dynamic, stopping, being cooperatively connected in the non-return valve on pipeline, it can be achieved that the mining automatic drainage device of automatic drainage function.
Used technical solution is the present invention to achieve the goals above:
A kind of mining automatic drainage device, including automatic drain system and the Auto-drainage being connect with automatic drain system control electricity
Road, the drainage system include QBZ-80 electromagnetic starter, water level controller and it is interior be equipped with high water level sensor, low water level sense
One end of the plash of device and electric pump, QBZ-80 electromagnetic starter one end and electric pump connects, and the other end of the electric pump is logical
Cross non-return valve connection drainpipe, the other end of QBZ-80 electromagnetic start by water level controller respectively with high water level sensor and low
Water level sensor connection；The Auto-drainage control circuit includes electric pump main control loop and water level control circuit.The present invention is logical
It crosses and water level controller is separated and are fabricated to water level detecting and automatic control circuit, which reaches high in water level
When water level sensor, water level controller triggering, switch, which is attracted, to be started to drain；When water level is lower than low water level sensor, water level control
Device processed is triggered again, and is switched automatic disconnection, is stopped draining.The present invention is cooperatively connected in the non-return valve on pipeline, it can be achieved that certainly
Dynamic drain function.
Further, the electric pump main control loop includes input terminal x1, x2, x3, conversion separation switch HGK, vacuum
Contactor CKJ, motor protecter JDB, resistance-capacitance device RC, leading-out terminal D1, D2, D3, described input terminal X1, X2, X3 pass through commutation
It is connect after disconnecting switch HGK, vacuum contactor CKJ, motor protector JDB with leading-out terminal D1, D2, D3, the motor is protected
33 ends of shield device JDB and the normally-closed contact CKJ4 connection of vacuum contactor, the electronic protector JDB and outlet terminal D1, D2,
Be additionally provided with resistance capaciting absorpting circuit RC between D3,9 ends of the motor protector JDB, 4 ends, 3 ends respectively with water level control circuit
Connection.
Further, the water level control circuit includes 36V power supply, water level controller, high water level sensor, low water level biography
Sensor, intermediate relay ZJ, nearly control stop button TA, nearly control start button QA, remote control switch terminals NK1, proximity switch end NK2,
Suction coil Q1, Q2, Q3, Q4 of vacuum contactor CKJ, 36V power supply one end by resistance, intermediate contactor ZJ it is normally opened
Connect after the ZJ1 of contact with the first end of rectifier bridge, the 36V power supply other end pass through intermediate relay ZJ 2 after with rectifier bridge second
End connection, the third end of rectifier bridge connect with suction coil Q1, Q2, Q3, Q4 of vacuum contactor CKJ after with rectifier bridge the 4th
End connection, one end and the vacuum contactor CKJ for connecing capacitor between the suction coil Q1 and Q2 of the vacuum contactor CKJ respectively are normal
One end of closed contact CKJ2 connects the other end of capacitor and true respectively between the suction coil Q3 and Q4 of the vacuum contactor CKJ
The other end of empty contactor CKJ normally-closed contact CKJ2,9 ends of the motor protector JDB connect intermediate relay ZJ respectively
One end of normally opened contact ZJ2,9 ends of water level controller, water level controller the end L2,4 ends of motor protector JDB connect respectively
One end of intermediate relay ZJ, water level controller the end L1, the other end of intermediate relay ZJ and nearly control stop button TA, nearly control
Start button QA, remote control switch terminals NK1, proximity switch end NK2,2# terminals are sequentially connected, the proximity switch end NK2 and true
One end of empty contactor CKJ normally opened contact CKJ1 connects, the other end and 1# terminals of vacuum contactor CKJ normally opened contact CKJ1
Connection, the 1# terminals are also connect with one end of nearly control start button QA, and the nearly other end for controlling start button QA meets 2# respectively
Closely control another termination 9# line terminals of stop button TA, the water level controller in one end of terminals and nearly control stop button TA
The end L connect with low water level sensor by 13# terminals, the end H of water level controller passes through 8# terminals and high water level sensing
Device connection, 1 end one end of water level controller are connected between 1# terminals and nearly control start button QA, 1 end of water level controller
The other end is connect by water level controller contact K1 with 9 end of water level controller, the one end D1 ground connection of water level controller, water level control
The other end of device D1 is connect with 9 ends of water level controller and the end D2 respectively by mode selection switch, the end D2 of water level controller
It is connect with 9# terminals, the 36v power supply is connect by input terminal x3 with the end 660V of transformer KB, input terminal X2 and resistance
It is connect after RD connection with the primary coil other end of transformer KB, the primary coil of transformer KB is 36V through transformer KB decompression
Composition.
Preferably, the top of the plash to bottom is successively arranged high water level sensor and low water level sensor.Water level
Controller is mainly by two water level sensors come work, and the specific height of low water level sensor and high water level sensor is according to institute
Depending on the depth for needing to drain.
Such as: low water level sensor is apart from grounding sensor 20cm, and high water level sensor is apart from grounding sensor 1.5m.Tool
Body running process is: when the water in puddle is lower than 20cm, motor does not work；It (more than 20cm, is still controlled when water gradually rises
Motor does not work, and otherwise leads to motor frequent starting), when water reaches 1.5m, high water level probe enter water at this moment motor open
Beginning work draining, water level are begun to decline, but as long as water level is higher than 20cm, motor works on, until water level is lower than 20cm, low water
Position probe is detached from the water surface, and motor stops working.
Preferably, the water level controller is intrinsic safety type water level controller.
The present invention when plash ponding reaches high water level sensor can Auto-drainage, ponding be detached from low water level sensing
After device, draining stops.Core of the invention component is intrinsic safety type water level controller, when mode selection switch K2 is pushed " automatic "
When position, water-level control circuit is thus started, the starting and stopping of starter can be automatically controlled by water level controller；
When mode selection switch K2 is pushed " manual " position, it is thus not necessarily to water-level control circuit, by manually being manually controlled.
The present invention oneself production does not need to buy expensive self-draining arrangement, while original QBZ-80 electromagnetic starter is under-voltage, overload, breaks
Each defencive functions such as phase, short circuit, main circuit earth leakage search/lockout, main circuit switching overvoltage absorption apparatus, effectively energy saving, drop
Low operating cost extends service life of equipment, subtracts the purpose that people proposes effect, economic benefits.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is circuit diagram of the invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Fig. 1 and 2, the mining automatic drainage device of the present embodiment, including automatic drain system and and Auto-drainage
The Auto-drainage control circuit of system connection, the drainage system includes QBZ-80 electromagnetic starter, water level controller (KXJ36)
And the interior plash equipped with high water level sensor (GUCS10), low water level sensor (GUCS10) and electric pump, the QBZ-80 electricity
Magnetic actuator one end and one end of electric pump connect, and the other end of the electric pump connects drainpipe, QBZ-80 electromagnetism by non-return valve
The other end of starting by water level controller (KXJ36) respectively with high water level sensor (GUCS10) and low water level sensor
(GUCS10) it connects；The Auto-drainage control circuit includes electric pump main control loop and water level control circuit.The present invention passes through
Water level detecting and automatic control circuit are separated and are fabricated to water level controller (KXJ36), the water level controller (KXJ36)
When water level reaches high water level sensor (GUCS10), water level controller (KXJ36) triggering, switch, which is attracted, to be started to drain；In water
When position is lower than low water level sensor (GUCS10), water level controller (KXJ36) is triggered again, and is switched automatic disconnection, is stopped row
Water.The present invention is cooperatively connected in the non-return valve on pipeline, it can be achieved that automatic drainage function.
Further, the electric pump main control loop includes input terminal x1, x2, x3, conversion separation switch HGK, vacuum
Contactor CKJ, motor protecter JDB, resistance-capacitance device RC, leading-out terminal D1, D2, D3, described input terminal X1, X2, X3 pass through commutation
It is connect after disconnecting switch HGK, vacuum contactor CKJ, motor protector JDB with leading-out terminal D1, D2, D3, the motor is protected
33 ends of shield device JDB and the normally-closed contact CKJ4 connection of vacuum contactor, the electronic protector JDB and outlet terminal D1, D2,
Be additionally provided with resistance capaciting absorpting circuit RC between D3,9 ends of the motor protector JDB, 4 ends, 3 ends respectively with water level control circuit
Connection.
Further, the water level control circuit includes 36V power supply, water level controller (KXJ36), high water level sensor
(GUCS10), low water level sensor (GUCS10), intermediate relay ZJ, nearly control stop button TA, nearly control start button QA, remote control
Suction coil Q1, Q2, Q3, Q4 of switch terminals NK1, proximity switch end NK2, vacuum contactor CKJ, 36V power supply one end are logical
It is connect after crossing the normally opened contact ZJ1 of resistance, intermediate contactor ZJ with the first end of rectifier bridge, the 36V power supply other end passes through centre
It is connect after relay ZJ2 with the second end of rectifier bridge, suction coil Q1, Q2 of the third end of rectifier bridge and vacuum contactor CKJ,
It is connect after Q3, Q4 series connection with the 4th end of rectifier bridge, connects electricity respectively between the suction coil Q1 and Q2 of the vacuum contactor CKJ
One end of appearance and one end of vacuum contactor CKJ normally-closed contact CKJ2, the suction coil Q3 and Q4 of the vacuum contactor CKJ it
Between connect the other end of capacitor and the other end of vacuum contactor CKJ normally-closed contact CKJ2 respectively, the motor protector JDB's
9 ends connect one end of the normally opened contact ZJ2 of intermediate relay ZJ, 9 ends of water level controller (KXJ36), water level controller respectively
(KXJ36) the end L2,4 ends of motor protector JDB connect one end of intermediate relay ZJ, water level controller (KXJ36) respectively
The end L1, the other end of intermediate relay ZJ and nearly control stop button TA, nearly control start button QA, remote control switch terminals NK1, nearly control
Switch terminals NK2,2# terminals are sequentially connected, one end of the proximity switch end NK2 and vacuum contactor CKJ normally opened contact CKJ1
Connection, the other end of vacuum contactor CKJ normally opened contact CKJ1 are connect with 1# terminals, and the 1# terminals also start with nearly control
One end of button QA connects, and the nearly other end for controlling start button QA connects 2# terminals respectively and one end of nearly control stop button TA is close
Control another termination 9# line terminals of stop button TA, the end L of the water level controller (KXJ36) by 13# terminals with it is low
The end H of water level sensor (GUCS10) connection, water level controller (KXJ36) passes through 8# terminals and high water level sensor
(GUCS10) it connects, 1 end one end of water level controller (KXJ36) is connected between 1# terminals and nearly control start button QA, water
The 1 end other end of level controller (KXJ36) is connected by water level controller (KXJ36) contact K1 and 9 end water level controller (KXJ36)
It connects, the one end D1 ground connection of water level controller (KXJ36), the other end of water level controller (KXJ36) D1 passes through mode selection switch
It being connect respectively with 9 ends of water level controller (KXJ36) and the end D2, the end D2 of water level controller (KXJ36) is connect with 9# terminals,
The 36v power supply is connect by input terminal x3 with the end 660V of transformer KB, input terminal X2 connect with resistance RD after with transformation
The primary coil other end of device KB connects, and the primary coil of transformer KB is that 36V is formed through transformer KB decompression.
Preferably, the top of the plash to bottom is successively arranged high water level sensor (GUCS10) and low water level sensing
Device (GUCS10).Water level controller (KXJ36) is mainly by two water level sensors (GUCS10) come work, low water level sensor
(GUCS10) and the specific height of high water level sensor (GUCS10) is depending on the depth of required draining.
Such as: low water level sensor (GUCS10) is apart from grounding sensor 20cm, high water level sensor (GUCS10) distance
Grounding sensor 1.5m.Specific workflow is: when the water in puddle is lower than 20cm, motor does not work；When water gradually rises
(more than 20cm, still control motor does not work, and otherwise leads to motor frequent starting), when water reaches 1.5m, high water level probe
It is begun to decline at this moment motor start-up operation draining, water level in water, but as long as water level is higher than 20cm, motor works on, directly
It is lower than 20cm to water level, low water level probe is detached from the water surface, and motor stops working.
Preferably, the water level controller (KXJ36) is intrinsic safety type water level controller (KXJ36).
As shown in Figure 1, being manual mode when mode selection switch K2 is in manual position, principle is to work as disconnecting switch
When HGK is beaten to power transmission position, JDB comprehensive protection device obtains electric, detects to electric pump insulation against ground resistance value, after without exception 3#,
The normally opened electric shock closure of 4#, pressing remote control start button SB1,2# line and 9# line at this time, (switch is adjusted to closely control and open by the earth conducting
When closing NK2, the contact 5#, 2# has been closed, and 2# line and 9# line are grounded by D1), switch secondary control loop closure, intermediate relay
ZJ obtains electric actuation, normally opened contact ZJ1 closure, and vacuum contactor CKJ obtains electric actuation, switchs primary circuit at this time and is connected electric,
Water pump starting is drawn water, when being attracted due to vacuum contactor CKJ, auxiliary normally opened contact (self holding contact) CKJ2 closure, so this
Water pump is still run after Shi Songkai start button, and only after pressing remote control stop button SB2, secondary control loop is disconnected, water pump
Power loss is stopped transport.
When mode selection switch K2 is in automatic mode, 2# line and 9# line are earth-free, increase by one between 1# and 9#
The normally opened output contact K1 of water level controller.When the rising of plash water level reaches low water level L, water level sensor is not triggered, often
Contact K1 disconnection is opened, secondary circuit disconnects, and contactor CKJ is disconnected, water air pump inoperative.High water level is reached when plash water level rises
When, water level controller triggering, output contact K1 is closed, and 1# line is connected with 9# line, and switch secondary control loop forms closed circuit,
Water pump starts and starts to draw water, water level decreasing.With the continuous decline of water level, high water level sensor is detached from the water surface, but low water
For level sensor still in water, water level sensor output contact K1 is still within closed state, switchs at this time still in power transmission shape
State, water pump continue to draw water, and water level continues to decline, when low water level sensor leaves the water surface, intrinsic safety type water level sensor again by
Triggering, output contact K1 are disconnected, and secondary control loop disconnects, and contactor CKJ is disconnected, and switch stops power transmission at this time, and water pump stops taking out,
To realize the purpose according to the automatic pump drainage of SEA LEVEL VARIATION.
The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.It should be appreciated that
Above description is intended to illustrative and not limiting.For example, above-described embodiment (and/or its aspect) can be in combination with one another.
In addition, enlightenment according to the present invention, which can make many remodeling, is suitable for specific situation or material without departing from of the invention
Range.By reading foregoing description, many other embodiments and remodeling in scope and spirit of the claims are to this field
Technical staff is obvious.
Claims (5)
1. a kind of mining automatic drainage device, which is characterized in that connect including automatic drain system and with automatic drain system
Auto-drainage control circuit, the drainage system include that QBZ-80 electromagnetic starter, water level controller and the interior high water level that is equipped with pass
One end of the plash of sensor, low water level sensor and electric pump, QBZ-80 electromagnetic starter one end and electric pump connects, described
The other end of electric pump connects drainpipe by non-return valve, the other end of QBZ-80 electromagnetic start by water level controller respectively with height
Water level sensor and low water level sensor connection；The Auto-drainage control circuit includes electric pump main control loop and water level control
Circuit.
2. mining automatic drainage device according to claim 1, which is characterized in that the electric pump main control loop include into
Line terminals x1, x2, x3, conversion separation switch HGK, vacuum contactor CKJ, motor protecter JDB, resistance-capacitance device RC, leading-out terminal D1,
D2, D3, after described input terminal X1, X2, X3 are by conversion separation switch HGK, vacuum contactor CKJ, motor protector JDB
It is connect with leading-out terminal D1, D2, D3,33 ends of the motor protector JDB and the normally-closed contact CKJ4 connection of vacuum contactor,
Resistance capaciting absorpting circuit RC, the motor protector are additionally provided between the electronic protector JDB and outlet terminal D1, D2, D3
9 ends, 4 ends, 3 ends of JDB are connect with water level control circuit respectively.
3. mining automatic drainage device according to any one of claim 1 to 2, which is characterized in that the water level control
Circuit include 36V power supply, water level controller, high water level sensor, low water level sensor, intermediate relay ZJ, stop button TA,
Suction coil Q1, Q2, Q3, Q4 of start button QA, remote control switch terminals NK1, proximity switch end NK2, vacuum contactor CKJ, institute
State 36V power supply one end by resistance, intermediate contactor ZJ normally opened contact ZJ1 after connect with the first end of rectifier bridge, 36V power supply
The other end is connect after passing through intermediate relay ZJ 2 with the second end of rectifier bridge, and the third end of rectifier bridge is with vacuum contactor CKJ's
Suction coil Q1, Q2, Q3, Q4 series connection after connect with the 4th end of rectifier bridge, the suction coil Q1 of the vacuum contactor CKJ and
One end of capacitor and one end of vacuum contactor CKJ normally-closed contact CKJ2, the suction of the vacuum contactor CKJ are connect between Q2 respectively
The other end of capacitor and the other end of vacuum contactor CKJ normally-closed contact CKJ2, the electricity are connect between the line of force circle Q3 and Q4 respectively
9 ends of motivation protector JDB connect one end of the normally opened contact ZJ2 of intermediate relay ZJ, 9 ends of water level controller, water level respectively
The end L2 of controller, 4 ends of motor protector JDB connect the end L1 of one end of intermediate relay ZJ, water level controller respectively, in
Between relay ZJ the other end and stop button TA, start button QA, remote control switch terminals NK1, proximity switch end NK2,2# wiring
End is sequentially connected, and the proximity switch end NK2 is connect with one end of vacuum contactor CKJ normally opened contact CKJ1, vacuum contactor
The other end of CKJ normally opened contact CKJ1 is connect with 1# terminals, and the 1# terminals are also connect with one end of start button QA, is opened
The other end of dynamic button QA connects 2# terminals and another termination 9# line wiring of one end stop button TA of stop button TA respectively
The end L at end, the water level controller is connect by 13# terminals with low water level sensor, and the end H of water level controller is connect by 8#
Line end is connect with high water level sensor, and 1 end one end of water level controller is connected between 1# terminals and start button QA, water level
The 1 end other end of controller is connect by water level controller contact K1 with 9 end of water level controller, and the D1 mono- of water level controller is terminated
The other end on ground, water level controller D1 is connect with 9 ends of water level controller and the end D2 respectively by mode selection switch, water level control
The end D2 of device processed is connect with 9# terminals, and the 36v power supply is connect by input terminal x3 with the end 660V of transformer KB, end of incoming cables
Sub- X2 is connect after connecting with resistance RD with the primary coil other end of transformer KB, and the primary coil of transformer KB is through transformer KB
Decompression is that 36V is formed.
4. mining automatic drainage device according to claim 1, which is characterized in that the top of the plash to bottom according to
It is secondary to be equipped with high water level sensor and low water level sensor.
5. mining automatic drainage device according to claim 1, which is characterized in that the water level controller is intrinsic safety type water
Level controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379756.6A CN109404042A (en) | 2018-11-20 | 2018-11-20 | A kind of mining automatic drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379756.6A CN109404042A (en) | 2018-11-20 | 2018-11-20 | A kind of mining automatic drainage device |
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| CN109404042A true CN109404042A (en) | 2019-03-01 |
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| CN201811379756.6A Withdrawn CN109404042A (en) | 2018-11-20 | 2018-11-20 | A kind of mining automatic drainage device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110162108A (en) * | 2019-05-29 | 2019-08-23 | 国家能源投资集团有限责任公司 | Drain circuit and control method |
| CN110500133A (en) * | 2019-07-12 | 2019-11-26 | 淮北矿业股份有限公司 | Novel down-hole exploiting field drain control unit |
| CN113467526A (en) * | 2021-06-07 | 2021-10-01 | 淮南万泰电子股份有限公司 | Double-loop water level control system |
| CN115539365A (en) * | 2022-11-09 | 2022-12-30 | 国网福建省电力有限公司 | Automatic drainage device for transformer accident oil pool |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110162108A (en) * | 2019-05-29 | 2019-08-23 | 国家能源投资集团有限责任公司 | Drain circuit and control method |
| CN110500133A (en) * | 2019-07-12 | 2019-11-26 | 淮北矿业股份有限公司 | Novel down-hole exploiting field drain control unit |
| CN113467526A (en) * | 2021-06-07 | 2021-10-01 | 淮南万泰电子股份有限公司 | Double-loop water level control system |
| CN115539365A (en) * | 2022-11-09 | 2022-12-30 | 国网福建省电力有限公司 | Automatic drainage device for transformer accident oil pool |
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