CN106996379A - Two pump control circuit of sewage pump - Google Patents
Two pump control circuit of sewage pump Download PDFInfo
- Publication number
- CN106996379A CN106996379A CN201710290184.3A CN201710290184A CN106996379A CN 106996379 A CN106996379 A CN 106996379A CN 201710290184 A CN201710290184 A CN 201710290184A CN 106996379 A CN106996379 A CN 106996379A
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- Prior art keywords
- switch
- pump
- contactor
- selecting switch
- selecting
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
Abstract
The invention provides a two-pump control circuit of a sewage pump, which controls two sets of drainage pump units, wherein liquid level switches are correspondingly arranged for each set of drainage pump unit, different control liquid levels are arranged for the liquid level switches, when the water flooding of a machine room reaches a first liquid level height, the first unit is put into operation, when the water flooding height of the machine room reaches a second higher height, the first unit and the second unit are put into operation at the same time, three sets of water pumps can be arranged, three liquid level switches are correspondingly arranged, and when the water flooding height reaches a third higher height, three water pumps are put into operation at the same time, and the rest can be done in the same way. The quantity of the water pumps needed to be started can be automatically controlled according to the flooding height of the machine room. The problem that only one set of water pump unit can be put into operation in the prior art can be effectively solved, and when a small amount of water leakage occurs in a machine room, one drainage pump is ensured to be put into operation, and under the condition that the machine room has serious water leakage, under the condition that the water flooding height is higher, a plurality of drainage pumps can be simultaneously put into operation.
Description
Technical field
The present invention relates to a kind of sewage pump control line Road, more particularly to a kind of pump control circuit of sewage pump two.
Background technology
Now, with the continuous quickening of Process of Urbanization Construction, it is contemplated that rainy day and equipment occur surprisingly to be likely to result in water logging
The problem of, in order to ensure safety, many ground machine room lower, pump house or other places etc. are required for setting drainage arrangement.Prior art
In, the drainage arrangement of usual computer room is made up of a set of draining pump and control device, when occurring water logging, and the ball float of control device is moved
Make, start draining pump and draw water, drain ponding ensures safety in time.In the prior art, also have and two sets of rows are set inside computer room
Water installations, wherein it is a set of in running order and another set of in stand-by state, but the unit of stand-by state need to manually
Start and stop.Therefore, the unit that worked when computer room soaks break down be unable to proper drainage and now staff fail and
Shi Qidong reserve pumps, then the problem of largely occurring water logging computer room.
A kind of blowdown apparatus for controlling pump of China Patent Publication No. CN104131969A and the control of CN104131970A dredge pumps
Circuit, discloses a kind of technical scheme of blowdown, the another set of machine using two sets of dredge pump units, a set of water pump assembly work
Group is standby, and when the unit of work breaks down, standby unit automatically engages operation, so as to avoid standby because of work unit failure
The problem of operation can not being automatically engaged with pump.But, the shortcoming of the technical scheme is that can only have a set of unit commitment to transport all the time
OK.In the case that computer room water inlet is in small inflow, a set of unit commitment operation can meet requirement, but has a problem in that working as machine
When room water inlet is very serious, a set of unit tends not to meet drainage requirement.
The content of the invention
In order to solve problem above, the present invention proposes a kind of pump control circuit of sewage pump two, and it controls two sets of draining pump machines
Group, is arranged in correspondence with liquid-level switch for each draining pump assembly and different control liquid levels is set for each liquid-level switch, when
When water logging height is different, the unit quantity for starting draining is different, when computer room water logging reaches the first liquid level, the first unit commitment
Operation, when computer room water logging highly reaches the second higher height, the first unit, the second unit put into operation simultaneously；Can root
The water pump quantity for needing to start according to the highly automated control of computer room water logging.Prior art can be efficiently solved can only a set of water pump
The problem of unit commitment is run, it is ensured that when a small amount of leaks occurs in computer room, there is a draining pump to put into operation, and when computer room occurs
In the case of serious leak, in the case that water logging height is higher, then there are many draining pumps can be while putting into operation.
The technical scheme that present invention solution technical problem is proposed is that the present invention proposes a kind of pump control line of sewage pump two
Road, including No. 1 pump main circuit and No. 2 pump main circuits and No. 1 pump control circuit and No. 2 pump control circuits, it is characterized in that,
No. 1 pump main circuit includes：Three phase mains is linked into 1 after circuit breaker Q F1, A.C. contactor KM1 successively
Number pump motor M1；
No. 2 pump main circuits include：Three phase mains is linked into 2 after circuit breaker Q F2, A.C. contactor KM2 successively
Number pump motor M2；
No. 1 pump control circuit includes：
Firstth, by air switch QK, control loop fuse FR, selecting switch BK1, liquid-level switch YK1, stop button
SA2, A.C. contactor KM1 starting relay No. 1 the automatic control of pump loop in series, 1, the 3 of the selecting switch BK1 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line L through A.C. contactor KM1；
Secondth, by air switch QK, control loop fuse FR, selecting switch BK1, liquid-level switch YK1, A.C. contactor
KM1 starting relay contact KM1-2, selecting switch BK2, alarm relay BJ1, DCS warning system No. 1 pump in series are certainly
Dynamic alarm circuit, 1, the 3 contacts conducting of the selecting switch BK1,1, the 3 contacts conducting of the selecting switch BK2, power firestreak
L enters from air switch QK, most accesses zero line N through DCS warning systems afterwards；Wherein, during selecting switch BK2 1,3 contacts conducting
Start alarm, selecting switch BK2 cancels alarm when going to 2,4 contact；
3rd, by air switch QK, control loop fuse FR, selecting switch BK1, start button SA1, stop button
SA2, A.C. contactor KM1 starting relay No. 1 pump manual control circuit in series, 2, the 4 of the selecting switch BK1 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM1；
4th, relay is started by air switch QK, control loop fuse FR, selecting switch BK1, A.C. contactor KM1
Device KM1-1, stop button SA2, the A.C. contactor KM1 manual self-holding circuit of starting relay No. 1 pump in series, it is described
Selecting switch BK1 2,4 contacts conducting, power firestreak L enters from air switch QK, the startup most afterwards through A.C. contactor KM1
Relay access zero line N；
5th, by air switch QK, control loop fuse FR, selecting switch BK1, A.C. contactor KM1 startup after
Appliance contact KM1-1, A.C. contactor KM1 starting relay contact KM1-2, selecting switch BK2, alarm relay BJ1,
DCS warning systems No. 1 pump ann test loop in series；Power firestreak L enters from air switch QK, most alarmed afterwards through DCS
System access zero line N, the selecting switch BK1 2,4 contacts conducting；Wherein, selecting switch BK2 1,3 contacts conducting starts
Alarm, selecting switch BK2 cancels alarm when going to 2,4 contact；
No. 2 pump control circuits include：
Firstth, by air switch QK, control loop fuse FR, selecting switch BK3, liquid-level switch YK2, stop button
SA4, A.C. contactor KM2 starting relay No. 2 the automatic control of pump loops in series, 1, the 3 of the selecting switch BK3 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM2；
Secondth, by air switch QK, control loop fuse FR, selecting switch BK3, liquid-level switch YK2, A.C. contactor
KM2 starting relay contact KM2-2, selecting switch BK4, alarm relay BJ2, DCS warning system No. 2 pumps in series are certainly
Dynamic alarm circuit, 1, the 3 contacts conducting of the selecting switch BK3,1, the 3 contacts conducting of the selecting switch BK4, power firestreak
L enters from air switch QK, most accesses zero line N through DCS warning systems afterwards；Wherein, during selecting switch BK4 1,3 contacts conducting
Start alarm, selecting switch BK4 cancels alarm when going to 2,4 contact；
3rd, by air switch QK, control loop fuse FR, selecting switch BK3, start button SA3, stop button
SA4, A.C. contactor KM2 starting relay No. 2 pump manual control circuits in series, 2, the 4 of the selecting switch BK3 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM2；
4th, relay is started by air switch QK, control loop fuse FR, selecting switch BK3, A.C. contactor KM2
Device KM2-1, stop button SA4, the A.C. contactor KM2 manual self-holding circuit of starting relay No. 1 pump in series, it is described
Selecting switch BK3 2,4 contacts conducting, power firestreak L enters from air switch QK, the startup most afterwards through A.C. contactor KM1
Relay access zero line N；
5th, by air switch QK, control loop fuse FR, selecting switch BK3, A.C. contactor KM2 startup after
Appliance contact KM2-1, A.C. contactor KM2 starting relay contact KM2-2, selecting switch BK4, alarm relay BJ1,
DCS warning systems No. 2 pump ann tests loop in series；Power firestreak L enters from air switch QK, most alarmed afterwards through DCS
System access zero line N, the selecting switch BK3 2,4 contacts conducting；Wherein, selecting switch BK4 1,3 contacts conducting starts
Alarm, selecting switch BK4 cancels alarm when going to 2,4 contact；
The control liquid level of the liquid-level switch YK2 is higher than liquid-level switch YK1 control liquid level.
Beneficial effects of the present invention：The present invention proposes a kind of pump control circuit of sewage pump two, for every set draining pump assembly
It is arranged in correspondence with liquid-level switch and different control liquid levels is set for two liquid-level switches, when water logging height is different, starts row
The water pump assembly quantity of water is different, when computer room water logging reaches the first liquid level, the first unit commitment operation, when computer room water logging is high
When degree reaches the second higher liquid level, the first unit, the second unit put into operation simultaneously, can effectively solve when leak is tight
One pumping drainage can not meet the problem of requiring during weight.
Brief description of the drawings：
Fig. 1-Fig. 3 is the electric control theory figure of one embodiment of the invention, wherein, Fig. 1 is that main circuit structure principle is shown
It is intended to, Fig. 2 is control circuit structure principle schematic, Fig. 3 is selecting switch contact mplifying structure schematic diagram.
Embodiment
Fig. 1-Fig. 3 is the electric control theory figure of one embodiment of the invention, wherein, Fig. 1 is that main circuit structure principle is shown
It is intended to, Fig. 2 is control circuit structure principle schematic, Fig. 3 is selecting switch contact mplifying structure schematic diagram.
Shown in figure, in this example, the present invention proposes a kind of pump control circuit of sewage pump two, including No. 1 pump main circuit and No. 2
Pump main circuit and No. 1 pump control circuit and No. 2 pump control circuits.
Shown in Fig. 1, No. 1 pump main circuit includes：Three phase mains is followed by through circuit breaker Q F1, A.C. contactor KM1 successively
Enter to No. 1 pump motor M1；No. 2 pump main circuits include：Three phase mains is accessed after circuit breaker Q F2, A.C. contactor KM2 successively
To No. 2 pump motor M2.
Fig. 2, Fig. 3 show that No. 1 pump control circuit includes：
Firstth, by air switch QK, control loop fuse FR, selecting switch BK1, liquid-level switch YK1, stop button
SA2, A.C. contactor KM1 starting relay No. 1 the automatic control of pump loop in series, 1, the 3 of the selecting switch BK1 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line L through A.C. contactor KM1；
Secondth, by air switch QK, control loop fuse FR, selecting switch BK1, liquid-level switch YK1, A.C. contactor
KM1 starting relay contact KM1-2, selecting switch BK2, alarm relay BJ1, DCS warning system No. 1 pump in series are certainly
Dynamic alarm circuit, 1, the 3 contacts conducting of the selecting switch BK1,1, the 3 contacts conducting of the selecting switch BK2, power firestreak
L enters from air switch QK, most accesses zero line N through DCS warning systems afterwards；Wherein, during selecting switch BK2 1,3 contacts conducting
Start alarm, selecting switch BK2 cancels alarm when going to 2,4 contact；
3rd, by air switch QK, control loop fuse FR, selecting switch BK1, start button SA1, stop button
SA2, A.C. contactor KM1 starting relay No. 1 pump manual control circuit in series, 2, the 4 of the selecting switch BK1 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM1；
4th, relay is started by air switch QK, control loop fuse FR, selecting switch BK1, A.C. contactor KM1
Device KM1-1, stop button SA2, the A.C. contactor KM1 manual self-holding circuit of starting relay No. 1 pump in series, it is described
Selecting switch BK1 2,4 contacts conducting, power firestreak L enters from air switch QK, the startup most afterwards through A.C. contactor KM1
Relay access zero line N；
5th, by air switch QK, control loop fuse FR, selecting switch BK1, A.C. contactor KM1 startup after
Appliance contact KM1-1, A.C. contactor KM1 starting relay contact KM1-2, selecting switch BK2, alarm relay BJ1,
DCS warning systems No. 1 pump ann test loop in series；Power firestreak L enters from air switch QK, most alarmed afterwards through DCS
System access zero line N, the selecting switch BK1 2,4 contacts conducting；Wherein, selecting switch BK2 1,3 contacts conducting starts
Alarm, selecting switch BK2 cancels alarm when going to 2,4 contact；
No. 2 pump control circuits include：
Firstth, by air switch QK, control loop fuse FR, selecting switch BK3, liquid-level switch YK2, stop button
SA4, A.C. contactor KM2 starting relay No. 2 the automatic control of pump loops in series, 1, the 3 of the selecting switch BK3 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM2；
Secondth, by air switch QK, control loop fuse FR, selecting switch BK3, liquid-level switch YK2, A.C. contactor
KM2 starting relay contact KM2-2, selecting switch BK4, alarm relay BJ2, DCS warning system No. 2 pumps in series are certainly
Dynamic alarm circuit, 1, the 3 contacts conducting of the selecting switch BK3,1, the 3 contacts conducting of the selecting switch BK4, power firestreak
L enters from air switch QK, most accesses zero line N through DCS warning systems afterwards；Wherein, during selecting switch BK4 1,3 contacts conducting
Start alarm, selecting switch BK4 cancels alarm when going to 2,4 contact；
3rd, by air switch QK, control loop fuse FR, selecting switch BK3, start button SA3, stop button
SA4, A.C. contactor KM2 starting relay No. 2 pump manual control circuits in series, 2, the 4 of the selecting switch BK3 touches
Point conducting, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM2；
4th, relay is started by air switch QK, control loop fuse FR, selecting switch BK3, A.C. contactor KM2
Device KM2-1, stop button SA4, the A.C. contactor KM2 manual self-holding circuit of starting relay No. 1 pump in series, it is described
Selecting switch BK3 2,4 contacts conducting, power firestreak L enters from air switch QK, the startup most afterwards through A.C. contactor KM1
Relay access zero line N；
5th, by air switch QK, control loop fuse FR, selecting switch BK3, A.C. contactor KM2 startup after
Appliance contact KM2-1, A.C. contactor KM2 starting relay contact KM2-2, selecting switch BK4, alarm relay BJ1,
DCS warning systems No. 2 pump ann tests loop in series；Power firestreak L enters from air switch QK, most alarmed afterwards through DCS
System access zero line N, the selecting switch BK3 2,4 contacts conducting；Wherein, selecting switch BK4 1,3 contacts conducting starts
Alarm, selecting switch BK4 cancels alarm when going to 2,4 contact.
The control liquid level of the liquid-level switch YK2 is higher than liquid-level switch YK1 control liquid level.
Present invention prompting, in other embodiments, can set 3 sets of draining pump assemblys and set 3 liquid levels to open accordingly
Close, the control height of each liquid-level switch is different, meanwhile, 3 sets of main circuits and 3 sets of control electricity are correspondingly set in control cabinet
Road.Then when computer room water logging reaches the first liquid level, the operation of first set unit commitment, when computer room water logging highly reach it is higher by the
During two height, the first unit, the second unit put into operation simultaneously；When computer room water logging highly reaches higher third height, the
One unit, the second unit, the 3rd unit put into operation simultaneously, by that analogy.
Claims (1)
1. a kind of pump control circuit of sewage pump two, including No. 1 pump main circuit and No. 2 pump main circuits and No. 1 pump control circuit and 2
Number pump control circuit；
No. 1 pump main circuit includes：Three phase mains is linked into No. 1 pump after circuit breaker Q F1, A.C. contactor KM1 successively
Motor M1；
No. 2 pump main circuits include：Three phase mains is linked into No. 2 pumps after circuit breaker Q F2, A.C. contactor KM2 successively
Motor M2；
No. 1 pump control circuit includes：
Firstth, by air switch QK, control loop fuse FR, selecting switch BK1, liquid-level switch YK1, stop button SA2, friendship
Contactor KM1 starting relay No. 1 the automatic control of pump loop in series is flowed, 1,3 contacts of the selecting switch BK1 are led
Logical, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line L through A.C. contactor KM1；
Secondth, by air switch QK, control loop fuse FR, selecting switch BK1, liquid-level switch YK1, A.C. contactor KM1
Starting relay contact KM1-2, selecting switch BK2, alarm relay BJ1, DCS warning system No. 1 pump in series it is automatic
Alarm circuit, 1, the 3 contacts conducting of the selecting switch BK1,1, the 3 contacts conducting of the selecting switch BK2, power firestreak L
Enter from air switch QK, most access zero line N through DCS warning systems afterwards；Wherein, opened during selecting switch BK2 1,3 contacts conducting
Dynamic alarm, selecting switch BK2 cancels alarm when going to 2,4 contact；
3rd, by air switch QK, control loop fuse FR, selecting switch BK1, start button SA1, stop button SA2, friendship
Contactor KM1 starting relay No. 1 pump manual control circuit in series is flowed, 2,4 contacts of the selecting switch BK1 are led
Logical, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM1；
4th, by air switch QK, control loop fuse FR, selecting switch BK1, A.C. contactor KM1 starting relays
KM1-1, stop button SA2, the A.C. contactor KM1 manual self-holding circuit of starting relay No. 1 pump in series, the choosing
Select switch BK1 2,4 contacts conducting, power firestreak L from air switch QK enter, the startup most afterwards through A.C. contactor KM1 after
Electrical equipment access zero line N；
5th, by air switch QK, control loop fuse FR, selecting switch BK1, A.C. contactor KM1 starting relay
Contact KM1-1, A.C. contactor KM1 starting relay contact KM1-2, selecting switch BK2, alarm relay BJ1, DCS report
Alert Cascade System constitutes No. 1 pump ann test loop；Power firestreak L enters from air switch QK, most connect afterwards through DCS warning systems
Enter zero line N, the selecting switch BK1 2,4 contacts conducting；Wherein, selecting switch BK2 1,3 contacts conducting starts alarm, choosing
Select when switch BK2 goes to 2,4 contact and cancel alarm；
No. 2 pump control circuits include：
Firstth, by air switch QK, control loop fuse FR, selecting switch BK3, liquid-level switch YK2, stop button SA4, friendship
Contactor KM2 starting relay No. 2 the automatic control of pump loops in series are flowed, 1,3 contacts of the selecting switch BK3 are led
Logical, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM2；
Secondth, by air switch QK, control loop fuse FR, selecting switch BK3, liquid-level switch YK2, A.C. contactor KM2
Starting relay contact KM2-2, selecting switch BK4, alarm relay BJ2, DCS warning system No. 2 pumps in series it is automatic
Alarm circuit, 1, the 3 contacts conducting of the selecting switch BK3,1, the 3 contacts conducting of the selecting switch BK4, power firestreak L
Enter from air switch QK, most access zero line N through DCS warning systems afterwards；Wherein, opened during selecting switch BK4 1,3 contacts conducting
Dynamic alarm, selecting switch BK4 cancels alarm when going to 2,4 contact；
3rd, by air switch QK, control loop fuse FR, selecting switch BK3, start button SA3, stop button SA4, friendship
Contactor KM2 starting relay No. 2 pump manual control circuits in series are flowed, 2,4 contacts of the selecting switch BK3 are led
Logical, power firestreak L enters from air switch QK, the most afterwards starting relay access zero line N through A.C. contactor KM2；
4th, by air switch QK, control loop fuse FR, selecting switch BK3, A.C. contactor KM2 starting relays
KM2-1, stop button SA4, the A.C. contactor KM2 manual self-holding circuit of starting relay No. 1 pump in series, the choosing
Select switch BK3 2,4 contacts conducting, power firestreak L from air switch QK enter, the startup most afterwards through A.C. contactor KM1 after
Electrical equipment access zero line N；
5th, by air switch QK, control loop fuse FR, selecting switch BK3, A.C. contactor KM2 starting relay
Contact KM2-1, A.C. contactor KM2 starting relay contact KM2-2, selecting switch BK4, alarm relay BJ1, DCS report
Alert Cascade System constitutes No. 2 pump ann test loops；Power firestreak L enters from air switch QK, most connect afterwards through DCS warning systems
Enter zero line N, the selecting switch BK3 2,4 contacts conducting；Wherein, selecting switch BK4 1,3 contacts conducting starts alarm, choosing
Select when switch BK4 goes to 2,4 contact and cancel alarm；
The control liquid level of the liquid-level switch YK2 is higher than liquid-level switch YK1 control liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290184.3A CN106996379B (en) | 2017-04-28 | 2017-04-28 | Two pump control circuit of sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290184.3A CN106996379B (en) | 2017-04-28 | 2017-04-28 | Two pump control circuit of sewage pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106996379A true CN106996379A (en) | 2017-08-01 |
| CN106996379B CN106996379B (en) | 2018-08-14 |
Family
ID=59435014
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710290184.3A Active CN106996379B (en) | 2017-04-28 | 2017-04-28 | Two pump control circuit of sewage pump |
Country Status (1)
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| CN (1) | CN106996379B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340434A (en) * | 2018-09-08 | 2019-02-15 | 深圳市能源环保有限公司 | A kind of two control valve device of power plant wet type mucking machine water compensating valve |
| CN110145460A (en) * | 2019-06-03 | 2019-08-20 | 国家电网有限公司 | A kind of double water pump rotation start-up and shut-down control circuit |
| WO2020047874A1 (en) * | 2018-09-08 | 2020-03-12 | 深圳市能源环保有限公司 | Two-valve control circuit of water replenishing valve of wet type slag extractor of power plant |
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|---|---|---|---|---|
| CN109340434A (en) * | 2018-09-08 | 2019-02-15 | 深圳市能源环保有限公司 | A kind of two control valve device of power plant wet type mucking machine water compensating valve |
| WO2020047874A1 (en) * | 2018-09-08 | 2020-03-12 | 深圳市能源环保有限公司 | Two-valve control circuit of water replenishing valve of wet type slag extractor of power plant |
| CN109340434B (en) * | 2018-09-08 | 2023-05-30 | 深圳能源环保股份有限公司 | Two valve controlling means of wet slag extractor moisturizing valve in power plant |
| CN110145460A (en) * | 2019-06-03 | 2019-08-20 | 国家电网有限公司 | A kind of double water pump rotation start-up and shut-down control circuit |
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| Publication number | Publication date |
|---|---|
| CN106996379B (en) | 2018-08-14 |
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Address after: 518046 13th Floor, Times Financial Center, 4001 Shennan Avenue, Futian District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Energy and environmental protection Co.,Ltd. Address before: 518046 13th Floor, Times Financial Center, 4001 Shennan Avenue, Futian District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ENERGY ENVIRONMENTAL ENGINEERING Co.,Ltd. |