CN207096826U - A kind of automatic pump drainage water installations with warning function - Google Patents
A kind of automatic pump drainage water installations with warning function Download PDFInfo
- Publication number
- CN207096826U CN207096826U CN201720801683.XU CN201720801683U CN207096826U CN 207096826 U CN207096826 U CN 207096826U CN 201720801683 U CN201720801683 U CN 201720801683U CN 207096826 U CN207096826 U CN 207096826U
- Authority
- CN
- China
- Prior art keywords
- switch
- relay
- liquid level
- level switch
- sump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model provides a kind of automatic pump drainage water installations with warning function, the pump drainage water installations solve the problems, such as because rainfall is excessive or the reason such as equipment fault caused by sump ponding can not in time discharge and pour in down a chimney back cable duct and flood cable.The automatic pump drainage water installations are arranged in sump, and sump is built in the lower of cable duct；Automatic pump drainage water installations include immersible pump, switch board, low liquid level switch, high level switch, limit liquid level switch and switch support frame；Immersible pump is arranged on the bottom of sump and incoming transport power network, and switch support frame is fixed in sump and perpendicular to the bottom of sump, and switch board is arranged on the outside of sump；Low liquid level switch, high level switch and limit liquid level switch are sequentially fixed on switch support frame from the bottom to top；The control circuit of incoming transport circuit is provided with switch board, immersible pump, low liquid level switch, high level switch and limit liquid level switch electrically connect with control circuit.
Description
Technical field
It the utility model is related to water-pumping/draining system regions, more particularly to a kind of automatic pump drainage water installations with warning function.
Background technology
The cable duct of pump drainage water system is that cable duct laid inside has cable below earth's surface at present.In plum rain season,
Ponding can be flowed into sump by cable duct, then is discharged ponding by immersible pump.The design of existing warehouse cable duct is in electricity
A sump is built in the minimum place of cable ditch, installing submersible pump in sump, by float switch automatically by ponding forced-ventilated extremely
In catch-basin, ensure that buried cable will not be flooded by ponding.But only by a float switch control when being worked due to pump drainage water system
System, the fluctuation of liquid level cause immersible pump frequent start-stop, shorten service life of equipment.And when diving failure of pump or rainfall are excessive
When, draining can cause ponding to pour in down a chimney to flood cable into cable duct not in time, and cable is immersed in water for a long time can cause electricity
, potential safety hazard be present in cable aging.
Utility model content
The utility model provides a kind of automatic pump drainage water installations with warning function, and the pump drainage water installations are solved because of rain
Ponding can not discharge in time in sump caused by measuring the reasons such as excessive or equipment fault pours in down a chimney back cable duct and floods asking for cable
Topic.
To achieve the above object, technical solutions of the utility model are：
A kind of automatic pump drainage water installations with warning function, the automatic pump drainage water installations are arranged in sump, sump
It is built in the lower of cable duct；The automatic pump drainage water installations include immersible pump, switch board, low liquid level switch, high level switch,
Limit liquid level switchs and switch support frame；The immersible pump is arranged on the bottom of the sump and incoming transport power network, institute
State switch support frame to be fixed in the sump and perpendicular to the bottom of the sump, the switch board is arranged on described catchment
The outside of well；
The low liquid level switch, the high level switch and limit liquid level switch are sequentially fixed at institute from the bottom to top
State on switch support frame；The control circuit of incoming transport circuit is provided with the switch board, the immersible pump, the low liquid level are opened
Close, the high level switch and limit liquid level switch electrically connect with the control circuit.
Further, air switch QF1 is provided between the immersible pump and the AC network；
The control circuit includes manual control unit, automatic control unit and immersible pump control unit, described manual
Control unit and the automatic control unit are switched by change-over switch SA；The manual control unit and described automatically control list
Member controls the keying of the immersible pump control unit.
Voltage conversion unit is provided between the control circuit and AC network, the voltage conversion unit includes transformer
T, electrothermal relay FR, electromotion pilot lamp HG1 and air switch QF2；The input incoming transport power network of the transformer T, institute
State air switch QF2 to be arranged between the input and AC network of the transformer T, the electromotion pilot lamp HG1 is connected on
Between the air switch QF2 and the transformer T input；The output end of the transformer T is serially connected with the hot relay
Device FR simultaneously powers for the control circuit.
Further, the immersible pump control unit includes contactor coil KM1, contactless contactor KM1-1 and operation
Indicator lamp HG2, the contactor coil KM1 are accessed in the automatic control unit and the manual control unit, the contact
Device switch KM1-1 is connected between the immersible pump and the air switch QF1, and the run indicator HG2 contacts with described
Device coil KM1 is in parallel.
Further, the manual control unit include normally closed button SB1, normally opened button SB2, relay coil KA1, after
Electric switch KA1-1 and relay switch KA1-2；It is 1,2 contacts of the change-over switch SA, the normally closed button SB1, described
The normally opened button SB2 and relay coil KA1 is connected across the output end of the transformer T, the relay after being sequentially connected in series
Device switch KA1-1 is in parallel with the normally opened button SB2 to form self-locking；The relay switch KA1-2 and the contactor coil
KM1 connects and is connected across the output end of the transformer T.
Further, the automatic control unit includes low liquid level switch K1, high level switch K2, limit liquid level switch
K3, relay coil KA2, relay switch KA2-1, relay switch KA2-2, relay coil KA3, relay switch KA3-
1 and relay switch KA3-2；
3,4 contacts, low liquid level switch K1, the high level switch K2 and the relay of the change-over switch SA
Device coil KA2 is connected across the output end of the transformer T, the relay switch KA2-1 and the high level after being sequentially connected in series
Switch K2 formation self-lockings in parallel；The relay switch KA2-2 connects with the contactor coil KM1 and is connected across the transformation
Device T output end；
3,4 contacts of the change-over switch SA, the high level switch K2, limit liquid level switch K3 and it is described after
Electric apparatus coil KA3 is connected across the output end of the transformer T, the relay switch KA3-1 and the limit after being sequentially connected in series
Liquid-level switch K3 is in parallel to form self-locking；The output of the transformer T is connected across after the relay switch KA3-2 concatenations buzzer
End forms alarm unit.
Further, the switch board is externally provided with control panel, and the control panel electrically connects with the control circuit, institute
Control panel is stated provided with electromotion pilot lamp window, hand automatic switchover knob, run indicator window, buzzer window, startup
Button and stop button；The electromotion pilot lamp HG1 is arranged in the electromotion pilot lamp window；The regulation of the change-over switch
End is connected with the hand automatic switchover knob；The run indicator HG2 is arranged in the run indicator window；The honeybee
The device Y that rings is arranged in the buzzer window；The normally opened button SB2 and the normally closed button SB1 corresponding component respectively with
The start button connects with the stop button.
From above-mentioned to description of the present utility model, compared to the prior art, the utility model has the following advantages that：
The automatic pump drainage water installations of the utility model are by analyzing existing drainage system, in the different positions of sump
Installation float switch is put, realizes that immersible pump is automatically stopped in high level automatic start, low liquid level, avoids immersible pump frequent start-stop.
The function of alarm is realized in limit liquid level installation acoustical generator simultaneously, when water level reaches herein, notifies maintenance personal's timely processing.
The automatic pump drainage water installations can voluntarily adjust low liquid level, high level, the position of limit liquid level according to different use demands,
With extensive generalization and versatility.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms one of the present utility model
Point, schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model
Improper restriction.In the accompanying drawings：
Fig. 1 be automatic pump drainage water installations of the utility model with warning function structural representation (A be sump bottom
Portion, B are low liquid level, and C is high level, and D is limit liquid level)；
Fig. 2 is structural representation of the utility model with the automatic pump drainage water installations switch board of warning function；
Fig. 3 is the structural representation of the automatic water-pumping/draining control loop of the utility model.
Embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect are clearer, clear, with
Under in conjunction with the accompanying drawings and embodiments, the utility model is further elaborated.It is it should be appreciated that described herein specific real
Example is applied only to explain the utility model, is not used to limit the utility model.
Referring to figs. 1 to Fig. 3, a kind of automatic pump drainage water installations with warning function, the automatic pump drainage water installations are arranged on collection
In well 1, sump 1 is built in the lower of cable duct；The automatic pump drainage water installations include immersible pump 2, switch board (is not schemed
Show), low liquid level switch 3, high level switch 4, limit liquid level switch 5 and switch support frame 6；The immersible pump 2 is arranged on institute
The bottom of sump 1 and incoming transport power network are stated, the switch support frame 6 is fixed in the sump 1 and perpendicular to described
The bottom of sump 1, the switch board (not shown) are arranged on the outside of the sump 1；
The low liquid level switch 3, the high level switch 4 and limit liquid level switch 5 are fixed successively from the bottom to top
On the switch support frame 6；The control circuit of incoming transport circuit, the immersible pump are provided with the switch board (not shown)
2nd, the low liquid level switch 3, the high level switch 4 and limit liquid level switch 5 electrically connect with the control circuit.
Air switch QF1 is provided between the immersible pump 2 and the AC network；
The control circuit includes manual control unit, automatic control unit and the control unit of immersible pump 2, described manual
Control unit and the automatic control unit are switched by change-over switch SA；The manual control unit and described automatically control list
Member controls the keying of the control unit of immersible pump 2.
Voltage conversion unit is provided between the control circuit and AC network, the voltage conversion unit includes transformer
T, electrothermal relay FR, electromotion pilot lamp HG1 and air switch QF2；The input incoming transport power network of the transformer T, institute
State air switch QF2 to be arranged between the input and AC network of the transformer T, the electromotion pilot lamp HG1 is connected on
Between the air switch QF2 and the transformer T input；The output end of the transformer T is serially connected with the hot relay
Device FR simultaneously powers for the control circuit.
The control unit of immersible pump 2 includes contactor coil KM1, contactless contactor KM1-1 and run indicator
HG2, the contactor coil KM1 are accessed in the automatic control unit and the manual control unit, the contactless contactor
KM1-1 is connected between the immersible pump 2 and the air switch QF1, the run indicator HG2 and the contactor coil
KM1 is in parallel.
The manual control unit includes normally closed button SB1, normally opened button SB2, relay coil KA1, relay switch
KA1-1 and relay switch KA1-2；1,2 contacts of the change-over switch SA, the normally closed button SB1, the normally opened button
The SB2 and relay coil KA1 is connected across the output end of the transformer T, the relay switch after being sequentially connected in series
KA1-1 is in parallel with the normally opened button SB2 to form self-locking；The relay switch KA1-2 connects with the contactor coil KM1
And it is connected across the output end of the transformer T.
The automatic control unit includes low liquid level switch 3K1, high level switch 4K2, limit liquid level switch 5K3, relay
Device coil KA2, relay switch KA2-1, relay switch KA2-2, relay coil KA3, relay switch KA3-1 and after
Electric switch KA3-2；
3,4 contacts of the change-over switch SA, low liquid level switch 3K1, the high level switch 4K2 and it is described after
Electric apparatus coil KA2 is connected across the output end of the transformer T, the relay switch KA2-1 and the high liquid after being sequentially connected in series
Bit switch 4K2 is in parallel to form self-locking；The relay switch KA2-2 connects with the contactor coil KM1 and is connected across described
Transformer T output end；
3,4 contacts of the change-over switch SA, the high level switch 4K2, limit liquid level switch 5K3 and described
Relay coil KA3 is connected across the output end of the transformer T, the relay switch KA3-1 and the pole after being sequentially connected in series
Limit liquid-level switch 5K3 formation self-lockings in parallel；It is connected across the transformer T's after the relay switch KA3-2 concatenations buzzer
Output end forms alarm unit.
The switch board (not shown) is externally provided with control panel 7, and the control panel 7 electrically connects with the control circuit,
The control panel 7 is provided with electromotion pilot lamp window 70, hand automatic switchover knob 71, run indicator window 72, buzzer
Window 73, start button 74 and stop button 75；The electromotion pilot lamp HG1 is arranged in the electromotion pilot lamp window 70；
The adjustable side of the change-over switch is connected with the hand automatic switchover knob 71；The run indicator HG2 is arranged on the fortune
In row indicator lamp window 72；The buzzer Y is arranged in the buzzer window 73；The normally opened button SB2 and it is described often
The corresponding component for closing button SB1 is connected with the start button 74 and the stop button 75 respectively..
The operation principle of this programme is as follows：
Air switch QF1 and air switch QF2 need closing by hand, and electric energy is provided for system operation and diving pump operation, empty
Electromotion pilot lamp HG1 is lighted after air cock QF1 closes a floodgate.
Manually during operation：
As change-over switch SA 1,2 contact closure when, system is in manual mode, and system operation is unrelated with liquid-level switch.
No matter liquid level be in where, press normally opened button SB2, relay coil KA1 coils obtain electric, and relay switch KA1-1 is normal
Open contact closure and form self-locking with normally opened button SB2, while relay switch KA1-2 normally opened contacts close and cause contactor coil
KM1 coils obtain electric, contactless contactor KM1-1 normally opened contacts closure, immersible pump 2 electric operation, water-pumping/draining operation starts, and operation refers to
Show that lamp HG2 is lighted.Normally closed button SB1 is pressed, manual operating loop disconnects, relay coil KA1 coil losing electricities, relay switch
KA1-1 and relay switch KA1-2 normally opened contacts disconnect, and release self-locking, contactor coil KM1 dead electricity, contactless contactor KM1-1
Normally opened contact disconnects, and the dead electricity of immersible pump 2 is out of service, and operation run indicator HG2 extinguishes.
During automatic running：
As change-over switch SA 3,4 contact closure when, system is in auto state, normally closed button SB1 and normally opened button SB2
Function is shielded, and system operation is controlled by liquid-level switch.Water level ascent stage, the low liquid level when water level is risen to up to low liquid level
3K1 closures are switched, are ready for system operation；Water level rises to up to high level switch 4K2 during high level and closed, relay line
Circle KA2 obtains electric, relay switch KA2-1 normally opened contacts closure and high level switch 4K2 formation self-lockings, while relay switch
It is electric that KA2-2 normally opened contacts closure make it that contactor coil KM1 is obtained, contactless contactor KM1-1 normally opened contacts closure, immersible pump 2
Electricity operation, water-pumping/draining operation start, and operation run indicator HG2 is lighted；Limit liquid when water level continuously rises to reach limit liquid level
Bit switch 5K3 is closed, and relay coil KA3 coils obtain electric, relay switch KA3-1 normally opened contacts closure and limit liquid level switch
5K3 forms self-locking, while relay switch KA3-2 normally opened contacts close, and buzzer Y opens alarm.Water level decreasing stage, water level
Limit liquid level switch 5K3 disconnects when descending below limit liquid level, but because relay switch KA3-1 is from being latched in, buzzer Y after
Continuous alarm, immersible pump 2 continue to run with；High level switch 4K2 disconnects when water level decreasing is less than high level, due to relay switch
KA2-1 is from being latched in, and relay coil KA2 continues electric, and water pump continues to run with, relay coil KA3 dead electricity, relay switch
KA3-2 normally opened contacts disconnect, buzzer Y stop alarms；Low liquid level switch 3K1 disconnects when water level continues to descend below low liquid level,
Relay coil KA2 dead electricity, relay switch KA2-2 disconnect, and contactor coil KM1 dead electricity, contactless contactor KM1-1 disconnects,
Immersible pump 2 is stopped, while runs run indicator HG2 extinguishings.
The automatic pump drainage water installations of the technical program are by analyzing existing drainage system, in the difference of sump 1
Float switch is installed in position, realizes that immersible pump 2 is automatically stopped in high level automatic start, low liquid level, avoids immersible pump 2 from frequently opening
Stop.The function of alarm is realized in limit liquid level installation acoustical generator simultaneously, when water level reaches herein, notifies maintenance personal to locate in time
Reason.The automatic pump drainage water installations can voluntarily adjust low liquid level, high level, the position of limit liquid level according to different use demands
Put, there is extensive generalization and versatility.
Preferred embodiment of the present utility model has shown and described in described above, as previously described, it should be understood that this practicality is new
Type is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and available for various other groups
Conjunction, modification and environment, and above-mentioned teaching or the technology of association area can be passed through in utility model contemplated scope described herein
Or knowledge is modified.And the change and change that those skilled in the art are carried out do not depart from spirit and scope of the present utility model, then
All should be in the protection domain of the appended claims for the utility model.
Claims (6)
1. a kind of automatic pump drainage water installations with warning function, the automatic pump drainage water installations are arranged in sump, sump is repaiied
It build the lower of cable duct in；It is characterized in that：The automatic pump drainage water installations include immersible pump, switch board, low liquid level switch, height
Liquid-level switch, limit liquid level switch and switch support frame；The immersible pump is arranged on the bottom of the sump and accesses friendship
Power network is flowed, the switch support frame is fixed in the sump and set perpendicular to the bottom of the sump, the switch board
In the outside of the sump；
The low liquid level switch, the high level switch and limit liquid level switch are sequentially fixed at described open from the bottom to top
Close on support frame；Be provided with the control circuit of incoming transport circuit in the switch board, the immersible pump, low liquid level switch,
The high level switch and limit liquid level switch electrically connect with the control circuit.
A kind of 2. automatic pump drainage water installations with warning function as claimed in claim 1, it is characterised in that：The immersible pump with
Air switch QF1 is provided between the AC network；
The control circuit includes manual control unit, automatic control unit and immersible pump control unit, the control manually
Unit and the automatic control unit are switched by change-over switch SA；The manual control unit and the automatic control unit control
Make the keying of the immersible pump control unit；
Voltage conversion unit is provided between the control circuit and AC network, the voltage conversion unit includes transformer T, heat
Relay FR, electromotion pilot lamp HG1 and air switch QF2；The input incoming transport power network of the transformer T, the sky
Air cock QF2 is arranged between the input and AC network of the transformer T, and the electromotion pilot lamp HG1 is connected on described
Between air switch QF2 and the transformer T input；The output end of the transformer T is serially connected with the electrothermal relay FR
And powered for the control circuit.
A kind of 3. automatic pump drainage water installations with warning function as claimed in claim 2, it is characterised in that：The immersible pump control
Unit processed includes contactor coil KM1, contactless contactor KM1-1 and run indicator HG2, and the contactor coil KM1 connects
Enter in the automatic control unit and the manual control unit, the contactless contactor KM1-1 be connected on the immersible pump and
Between the air switch QF1, the run indicator HG2 is in parallel with the contactor coil KM1.
A kind of 4. automatic pump drainage water installations with warning function as claimed in claim 3, it is characterised in that：The control manually
Unit includes normally closed button SB1, normally opened button SB2, relay coil KA1, relay switch KA1-1 and relay switch
KA1-2；1,2 contacts of the change-over switch SA, the normally closed button SB1, the normally opened button SB2 and the relay line
Circle KA1 is connected across the output end of the transformer T, the relay switch KA1-1 and normally opened button SB2 after being sequentially connected in series
Parallel connection forms self-locking；The relay switch KA1-2 connects with the contactor coil KM1 and is connected across the transformer T's
Output end.
A kind of 5. automatic pump drainage water installations with warning function as claimed in claim 4, it is characterised in that：It is described to automatically control
Unit includes low liquid level switch K1, high level switch K2, limit liquid level switch K3, relay coil KA2, relay switch KA2-
1st, relay switch KA2-2, relay coil KA3, relay switch KA3-1 and relay switch KA3-2；
3,4 contacts, low liquid level switch K1, the high level switch K2 and the relay line of the change-over switch SA
Circle KA2 is connected across the output end of the transformer T, the relay switch KA2-1 and the high level switch after being sequentially connected in series
K2 is in parallel to form self-locking；The relay switch KA2-2 connects with the contactor coil KM1 and is connected across the transformer T
Output end；
3,4 contacts, the high level switch K2, limit liquid level switch K3 and the relay of the change-over switch SA
Coil KA3 is connected across the output end of the transformer T, the relay switch KA3-1 and the limit liquid level after being sequentially connected in series
Switch K3 formation self-lockings in parallel；The output end shape of the transformer T is connected across after the relay switch KA3-2 concatenations buzzer
Into alarm unit.
A kind of 6. automatic pump drainage water installations with warning function as claimed in claim 5, it is characterised in that：Outside the switch board
Provided with control panel, the control panel electrically connects with the control circuit, and the control panel is provided with electromotion pilot lamp window
Mouth, hand automatic switchover knob, run indicator window, buzzer window, start button and stop button；The electromotion pilot lamp
HG1 is arranged in the electromotion pilot lamp window；The adjustable side of the change-over switch is connected with the hand automatic switchover knob；Institute
Run indicator HG2 is stated in the run indicator window；The buzzer Y is arranged in the buzzer window；
The normally opened button SB2 and the normally closed button SB1 corresponding component connect with the start button and the stop button respectively
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720801683.XU CN207096826U (en) | 2017-07-04 | 2017-07-04 | A kind of automatic pump drainage water installations with warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720801683.XU CN207096826U (en) | 2017-07-04 | 2017-07-04 | A kind of automatic pump drainage water installations with warning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207096826U true CN207096826U (en) | 2018-03-13 |
Family
ID=61555510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720801683.XU Expired - Fee Related CN207096826U (en) | 2017-07-04 | 2017-07-04 | A kind of automatic pump drainage water installations with warning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207096826U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343584A (en) * | 2018-10-12 | 2019-02-15 | 广东电网有限责任公司 | A kind of full-automatic water logging alarm of cable shaft and drain control unit |
| CN110487352A (en) * | 2019-08-07 | 2019-11-22 | 国网河北省电力有限公司 | A kind of cable duct water level automatic monitoring device |
| CN114737646A (en) * | 2022-03-23 | 2022-07-12 | 甘肃研硕电力科技有限公司 | Water storage tower and control cabinet |
-
2017
- 2017-07-04 CN CN201720801683.XU patent/CN207096826U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343584A (en) * | 2018-10-12 | 2019-02-15 | 广东电网有限责任公司 | A kind of full-automatic water logging alarm of cable shaft and drain control unit |
| CN110487352A (en) * | 2019-08-07 | 2019-11-22 | 国网河北省电力有限公司 | A kind of cable duct water level automatic monitoring device |
| CN114737646A (en) * | 2022-03-23 | 2022-07-12 | 甘肃研硕电力科技有限公司 | Water storage tower and control cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207096826U (en) | A kind of automatic pump drainage water installations with warning function | |
| CN104007771B (en) | A kind of water level controller | |
| CN201695512U (en) | Automatic water discharging device of pit type three-dimensional garage | |
| CN207228242U (en) | A kind of energy saving adjust stores up secondary water supply system | |
| CN110016945B (en) | Water inlet control device of emergency water tank | |
| CN205348289U (en) | Water tank automatic water supply device | |
| CN202390923U (en) | Automatic drainage system of substation cable trench | |
| CN207503056U (en) | A kind of cable shaft self-draining arrangement | |
| CN209083536U (en) | A kind of Accident of Transformer oil storage well drainage arrangement | |
| CN201391337Y (en) | Automatic drainage system of cable tunnel | |
| CN211007008U (en) | Automatic drainage system for shallow accumulated water in cable trench | |
| CN214427824U (en) | Automatic control device for liquid level of pit of thermal power plant | |
| CN106337802A (en) | Automatic pumping method for collecting well and pumping system based on automatic pumping method | |
| CN215987038U (en) | Sump pit liquid level control device | |
| CN115539365A (en) | Automatic drainage device for transformer accident oil pool | |
| CN203023079U (en) | Intelligent self-priming pump circuit structure | |
| CN202792389U (en) | Evaporative air cooling ventilation control system | |
| CN211009042U (en) | Waste water recovery pump automatic control device and waste water recovery system | |
| CN205243809U (en) | Suction pump automatic control device | |
| CN205503424U (en) | Solar energy water lift intelligence control system | |
| CN204940427U (en) | Power station life fire fighting supply intelligence control system | |
| CN204875934U (en) | Pumping plant of detectable water level | |
| CN209818339U (en) | Automatic drainage system of cable tunnel | |
| CN110820916A (en) | Automatic drainage system for shallow accumulated water in cable trench | |
| CN209604081U (en) | Tunnel automatic water pumping system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20200704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |