CN107366633B - A kind of pressurized tank pump control unit based on motor speed - Google Patents
A kind of pressurized tank pump control unit based on motor speed Download PDFInfo
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- CN107366633B CN107366633B CN201710699640.XA CN201710699640A CN107366633B CN 107366633 B CN107366633 B CN 107366633B CN 201710699640 A CN201710699640 A CN 201710699640A CN 107366633 B CN107366633 B CN 107366633B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000007257 malfunction Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of pressurized tank pump control unit based on motor speed, by 2 water pumps of mutual backup, standby pump can be automatically switched to when except motor overload, when the motor reasons such as there was a mechanical failure, cause motor speed to decline, automatically switches to standby pump using revolving speed as voltage input.2 pump of starting can be operated under manual mode simultaneously.The present invention passes through on the basis of conventional control device current temperature controls, increase pump rotary speed control circuit, to promote speed relay normally opened contact to be closed when pump rotary speed declines, control water pump switches and is warned, and increases the ability of the control device reply various failures of motor in this way.
Description
Technical field
The present invention relates to a kind of pump control unit, especially a kind of pressurized tank water pump based on motor speed controls dress
It sets.
Background technique
Pressurized tank is for playing the role of equilibrium water amount and pressure, avoiding safety valve frequent in closed-loop water system
It opens and the frequent moisturizing of automatic water compensating valve.Expansion drum plays the role of accommodating outside swelling water, moreover it is possible to play the role of water supply tank, it is swollen
Swell is filled with nitrogen, can obtain large volume to accommodate additional water, high and low pressure expansion drum using pressure parallel connection itself to
Voltage-stabilizing system moisturizing.The control of present apparatus each point is chain reaction, and automatic running, range of pressure fluctuations is small, securely and reliably, section
Can, good economical benefit.It is not required to build water tower, invests that small, land occupation is few, using aqueous vapor automatic adjustment, automatic operating, energy conservation and originally
Water auto-parallel is still available for water after power failure, the several years is not required to keep an eye on after debugging.Than building water tower investment reduction 70%, than an alive high position
Water tank investment reduction 60%, greatlys save construction investment.
As shown in Fig. 2, traditional pressurized tank configures 2 water pumps, one main one is led for mutual backup when 1 motor overload
It sends a telegraph stream to rise, reaches the setting valve of the setting of thermal overload relay, overload water pump will be automatically cut off, start standby pump, guarantee is set
Standby continuous and effective operation.Specific control are as follows: when 1#, which is pumped, to be operated normally, because electrical fault causes electric current to rise, reach hot mistake
Carrying setting valve set by relay, RJ1(5,14) normally-closed contact disconnects, make contactor KM1(12,14) coil losing electricity, 1# pump
Out of service, while RJ1(6,18) normally opened contact closure, makes KA(5,18) relay coil obtains electric, KA obtain it is electric after, KA obtains normally opened
Contact (12,13) closure, obtains contactor KM2 coil electric, and 2# pumps the work that brings into operation.That is conventional pressure tank water pump control is main
Control thermal overload relay is carried out by temperature to control pump working, this judgment mode is only applicable to cause on electric current
The electrical fault risen such as short circuit, and the failure in the case of other then can not be carried out automatically controlling and be excluded, and influence making for pressurized tank
With.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of the pressurized tank pump control unit based on motor speed, solution
The certainly incomplete problem of conventional control device Fault Control.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of pressurized tank pump control unit based on motor speed, it is characterised in that: pump M2,1# comprising 1# pump M1 and 2#
Pump M1 is connect with the one end thermal overload relay RJ1, and the thermal overload relay RJ1 other end connects the one end contactor KM1, contactor
The KM1 other end connects the one end main switch Q, and the main switch Q other end connects three phase mains, and 2# pumps M2 and thermal overload relay RJ2 mono-
End connection, the thermal overload relay RJ2 other end connect the one end contactor KM2, and the contactor KM2 other end connects the one end main switch Q,
Transformer T input terminal both ends are separately connected 2 firewires of the one end main switch Q, and two input terminals of hand automatic button SW1, which connect, to be become
One end of depressor T output end one end, the output end of hand automatic button SW1 is connect with the one end high pressure cutout switch SP1, high pressure cut-off
The switch SP1 other end connects the one end low-voltage starting switch SP2 and contactor KM1, KM2 normally opened contact one end, low-voltage starting switch
The SP2 other end connects the two-way input terminal of water pump switching switch SW2 with contactor KM1, KM2 normally opened contact other end, and water pump is cut
Change the Connection Time relay KT normally opened contact of output all the way one end, relay KA1 normally opened contact one end and the relay of switch SW2
The one end K1, the another output Connection Time relay KT normally opened contact other end, the relay KA1 that water pump switches switch SW2 are normal
The contact other end and the one end relay K2 are opened, relay K1 connects the transformer T output end other end with the K2 other end, and hand is pressed automatically
Other end connection 1# pump shutdown switch SB1 and the 2# pump of the output end of button SW1 stops one end of SB3, and it is another that 1# pumps shutdown switch SB1
One end connects 1# pump startup one end switch SB2 and relay K3 normally opened contact one end, and 2# pump stops the other end connection 2# pump of SB3
The one end SB4 and relay K4 normally opened contact one end are started switch, the 1# pump startup switch SB2 other end and the relay K3 other end connect
The one end contact relay KA1, time relay KT normally opened contact one end and the one end relay K3, the 2# pump startup switch SB4 other end
The relay KA1 other end, the time relay KT normally opened contact other end and the one end relay K4 are connected with the relay K4 other end,
Relay K3 connects the transformer T output end other end with the K4 other end, and relay K1 connects transformer T with K3 normally opened contact one end
Output end one end, relay K1 and the K3 normally opened contact other end connect the one end contactor KM1, contactor KM1 other end connection heat
Overload relay RJ1 normally-closed contact one end, relay K2 and K4 normally opened contact one end connect transformer T output end one end, relay
Device K2 connects the one end contactor KM2 with the K4 normally opened contact other end, and it is normal that the contactor KM2 other end connects thermal overload relay RJ2
Closed contact one end, the thermal overload relay RJ1 normally-closed contact other end connect change with the thermal overload relay RJ2 normally-closed contact other end
The depressor T output end other end, thermal overload relay RJ1 normally opened contact one end and thermal overload relay RJ2 normally opened contact one end connect
Transformer T output end one end is connect, the thermal overload relay RJ1 normally opened contact other end and thermal overload relay RJ2 normally opened contact are another
One end connects the one end relay KA1, and contactor KM2 normally-closed contact one end connects transformer T with contactor KM1 normally-closed contact one end
Output end one end, contactor KM2 normally-closed contact other end connection speed relay KS1 normally opened contact one end, contactor KM1 are normally closed
Contact other end connection speed relay KS2 normally opened contact one end, the speed relay KS1 normally opened contact other end and speed relay
The device KS2 normally opened contact other end connects the one end relay KA2, and the relay KA1 other end connects transformation with the relay KA2 other end
The device T output end other end, output end one end of normally opened contact one end connection transformer T of relay KA2, relay KA2's is normal
The one end contact other end Connection Time relay KT is opened, the time relay KT other end connects the transformer T output end other end.
Further, connecting line arranges U1, V1, W1 between the 1# pump M1 and thermal overload relay RJ1, and 2# pumps M2 and relay
Connecting line arranges U2, V2, W2 between device thermal overload RJ2.
Further, the input terminal both ends of the transformer T are respectively arranged with fuse F1 and F2, the output of transformer T
The both ends at end are respectively arranged with fuse F3 and F4.
Further, output end one end of the transformer T connects the one end power supply indicator H1, and power supply indicator H1 is another
The other end of end connection transformer T output end.
Further, output end one end connection contactor KM1 normally opened contact one end of the transformer T and contactor KM2
Normally opened contact one end, the contactor KM1 normally opened contact other end connect 1# and pump the one end indicator light H2, and contactor KM2 normally opened contact is another
It is defeated that one end connection 2# pump one end indicator light H3, the 1# pump indicator light H2 other end and the 2# pump indicator light H3 other end connect transformer T
The other end of outlet.
Further, output end one end connection relay KA1 normal open switch one end of the transformer T and relay KA2
Normal open switch one end, the relay KA1 normal open switch other end and relay KA2 normal open switch other end connecting fault indicator light H4
One end, the malfunction indicator lamp H4 other end connect the transformer T output end other end.
Compared with prior art, the present invention having the following advantages that and effect: the present invention passes through in conventional control device electric current
On the basis of temperature controlled, increase pump rotary speed control circuit, to promote speed relay normally opened when pump rotary speed decline
Contact closure, control water pump switch and are warned, and increase the ability of the control device reply various failures of motor in this way.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of pressurized tank pump control unit based on motor speed of the invention.
Fig. 2 is the schematic diagram of the prior art.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
As shown in Figure 1, a kind of pressurized tank pump control unit based on motor speed of the invention, pumps M1 and 2# comprising 1#
M2 is pumped, 1# pump M1 is connect with the one end thermal overload relay RJ1, and the thermal overload relay RJ1 other end connects the one end contactor KM1,
The contactor KM1 other end connects the one end main switch Q, and the main switch Q other end connects three phase mains, and 2# pumps M2 and thermal overload relay
The connection of the one end RJ2, the thermal overload relay RJ2 other end connect the one end contactor KM2, and the contactor KM2 other end connects main switch Q
One end, transformer T input terminal both ends are separately connected 2 firewires of the one end main switch Q, two input terminals of hand automatic button SW1
Transformer T output end one end is connected, one end of the output end of hand automatic button SW1 is connect with the one end high pressure cutout switch SP1, high
Pressure cut-out switch SP1 other end connection one end low-voltage starting switch SP2 and contactor KM1, KM2 normally opened contact one end, low pressure open
The dynamic switch SP2 other end connects the two-way input terminal of water pump switching switch SW2 with contactor KM1, KM2 normally opened contact other end,
Water pump switch the Connection Time relay KT normally opened contact of output all the way one end of switch SW2, relay KA1 normally opened contact one end and
The one end relay K1, water pump switch the another output Connection Time relay KT normally opened contact other end, the relay of switch SW2
The KA1 normally opened contact other end and the one end relay K2, relay K1 connect the transformer T output end other end, hand with the K2 other end
Other end connection 1# pump shutdown switch SB1 and the 2# pump of the output end of automatic button SW1 stops one end of SB3, and 1# pump stops opening
SB1 other end connection 1# pump startup one end switch SB2 and relay K3 normally opened contact one end are closed, 2# pump stops the other end of SB3
Connect 2# pump startup one end switch SB4 and relay K4 normally opened contact one end, the 1# pump startup switch SB2 other end and relay K3
The other end connects the one end relay KA1, time relay KT normally opened contact one end and the one end relay K3,2# pump startup switch
The SB4 other end connects the relay KA1 other end, the time relay KT normally opened contact other end and relay with the relay K4 other end
The one end device K4, relay K3 and the K4 other end connect the transformer T output end other end, and relay K1 and K3 normally opened contact one end connects
Transformer T output end one end is connect, relay K1 connects the one end contactor KM1 with the K3 normally opened contact other end, and contactor KM1 is another
End connection thermal overload relay RJ1 normally-closed contact one end, relay K2 connect transformer T output end one with K4 normally opened contact one end
End, relay K2 connect the one end contactor KM2 with the K4 normally opened contact other end, and it is normal that the contactor KM2 other end connects relay RJ2
Closed contact one end, the thermal overload relay RJ1 normally-closed contact other end connect change with the thermal overload relay RJ2 normally-closed contact other end
The depressor T output end other end, thermal overload relay RJ1 normally opened contact one end and thermal overload relay RJ2 normally opened contact one end connect
Transformer T output end one end is connect, the thermal overload relay RJ1 normally opened contact other end and thermal overload relay RJ2 normally opened contact are another
One end connects the one end relay KA1, and contactor KM2 normally-closed contact one end connects transformer T with contactor KM1 normally-closed contact one end
Output end one end, contactor KM2 normally-closed contact other end connection speed relay KS1 normally opened contact one end, contactor KM1 are normally closed
Contact other end connection speed relay KS2 normally opened contact one end, the speed relay KS1 normally opened contact other end and speed relay
The device KS2 normally opened contact other end connects the one end relay KA2, and the relay KA1 other end connects transformation with the relay KA2 other end
The device T output end other end, output end one end of normally opened contact one end connection transformer T of relay KA2, relay KA2's is normal
The one end contact other end Connection Time relay KT is opened, the time relay KT other end connects the transformer T output end other end.
1# pumps connecting line between M1 and thermal overload relay RJ1 and arranges U1, V1, W1,2# pump M2 and thermal overload relay RJ2 it
Between connecting line arrange U2, V2, W2.The input terminal both ends of transformer T are respectively arranged with fuse F1 and F2, the output end of transformer T
Both ends be respectively arranged with fuse F3 and F4.Output end one end of transformer T connects the one end power supply indicator H1, power supply instruction
The other end of lamp H1 other end connection transformer T output end.
Output end one end connection contactor KM1 normally opened contact one end of transformer T and contactor KM2 normally opened contact one end,
The contactor KM1 normally opened contact other end connects 1# and pumps the one end indicator light H2, and contactor KM2 normally opened contact other end connection 2# pump refers to
Show the one end lamp H3,1# pumps the other end that the indicator light H2 other end connects transformer T output end with the 2# pump indicator light H3 other end.Become
Output end one end connection relay KA1 normal open switch one end of depressor T and relay KA2 normal open switch one end, relay KA1 are normal
Switch the other end and the one end relay KA2 normal open switch other end connecting fault indicator light H4, the malfunction indicator lamp H4 other end
Connect the transformer T output end other end.
A kind of pressurized tank pump control unit based on motor speed of the invention passes through 2 water pumps of mutual backup, removes
Standby pump can be automatically switched to when motor overload, when the motor reasons such as there was a mechanical failure, motor speed is caused to decline, using turning
Speed automatically switches to standby pump as voltage input.2 pump of starting can be operated under manual mode simultaneously.Specific control are as follows: when 1# pump is normal
When operation, revolving speed decline promotes speed relay KS1(24,26) normally opened contact closure, relay coil KA2(5 at this time, 26)
Electric, KA2(6,27) it is normally opened touch to obtain electric actuation, allow time relay coil KT(5,27) it is electric, while providing local and remote
The low alarm signal of the revolving speed of biography automatically switches to the standby setting for pumping KT when motor speed decline after crossing 45S, and revolving speed may
Rise, play the role of buffering using time delays, in addition when initial equipment is powered but unstart equipment, KS1 and KS2 can inhale
It closes, avoids this problem, the warning lamp of H4 will do it prompt.
The present invention by conventional control device current temperature control on the basis of, increase pump rotary speed control circuit, from
And promoting speed relay normally opened contact to be closed when pump rotary speed decline, control water pump switches and is warned, and increases in this way
The ability of control device reply motor various failures.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, only
It should belong to guarantor of the invention without departing from the content or beyond the scope defined by this claim of description of the invention
Protect range.
Claims (6)
1. a kind of pressurized tank pump control unit based on motor speed, it is characterised in that: pump M2,1# pump comprising 1# pump M1 and 2#
M1 is connect with the one end thermal overload relay RJ1, and the thermal overload relay RJ1 other end connects the one end contactor KM1, contactor KM1
The other end connects the one end main switch Q, and the main switch Q other end connects three phase mains, and 2# pumps M2 and the one end thermal overload relay RJ2 connects
It connects, the thermal overload relay RJ2 other end connects the one end contactor KM2, and the contactor KM2 other end connects the one end main switch Q, transformation
Device T input terminal both ends are separately connected 2 firewires of the one end main switch Q, and two input terminals of hand automatic button SW1 connect transformer
One end of T output end one end, the output end of hand automatic button SW1 is connect with the one end high pressure cutout switch SP1, high pressure cutout switch
The SP1 other end connects the one end low-voltage starting switch SP2 and relay K1, K2 normally opened contact one end, low-voltage starting switch SP2 are another
End connects the two-way input terminal of water pump switching switch SW2 with relay K1, K2 normally opened contact other end, and water pump switches switch SW2
The Connection Time relay KT normally opened contact of output all the way one end, relay KA1 normally opened contact one end and the one end relay K1, water
The another output Connection Time relay KT normally opened contact other end, the relay KA1 normally opened contact of pump switching switch SW2 is another
End and the one end relay K2, relay K1 connect the transformer T output end other end with the K2 other end, and hand automatic button SW1's is defeated
Other end connection 1# pump shutdown switch SB1 and the 2# pump of outlet stops one end of SB3, and 1# pumps the connection of the shutdown switch SB1 other end
1# pump startup one end switch SB2 and relay K3 normally opened contact one end, 2# pump stop the other end connection 2# pump startup switch of SB3
The one end SB4 and relay K4 normally opened contact one end, the 1# pump startup switch SB2 other end connect relay with the relay K3 other end
The one end KA1, time relay KT normally opened contact one end and the one end relay K3, the 2# pump startup switch SB4 other end and relay
The K4 other end connects the relay KA1 other end, the time relay KT normally opened contact other end and the one end relay K4, relay K3
The transformer T output end other end is connected with the K4 other end, relay K1 connects transformer T output end one with K3 normally opened contact one end
End, relay K1 connect the one end contactor KM1 with the K3 normally opened contact other end, and the contactor KM1 other end connects thermal overload relay
Device RJ1 normally-closed contact one end, relay K2 and K4 normally opened contact one end connect transformer T output end one end, relay K2 and K4
The normally opened contact other end connects the one end contactor KM2, and the contactor KM2 other end connects thermal overload relay RJ2 normally-closed contact one
End, it is defeated that the thermal overload relay RJ1 normally-closed contact other end with the thermal overload relay RJ2 normally-closed contact other end connects transformer T
The outlet other end, thermal overload relay RJ1 normally opened contact one end connect transformer with thermal overload relay RJ2 normally opened contact one end
T output end one end, the thermal overload relay RJ1 normally opened contact other end are connected with the thermal overload relay RJ2 normally opened contact other end
The one end relay KA1, contactor KM2 normally-closed contact one end connect transformer T output end one with contactor KM1 normally-closed contact one end
End, contactor KM2 normally-closed contact other end connection speed relay KS1 normally opened contact one end, contactor KM1 normally-closed contact are another
Connection speed relay KS2 normally opened contact one end is held, the speed relay KS1 normally opened contact other end and speed relay KS2 are normal
Contact other end connection one end relay KA2 is opened, the relay KA1 other end connects transformer T output with the relay KA2 other end
The other end is held, normally opened contact one end of relay KA2 connects output end one end of transformer T, and the normally opened contact of relay KA2 is another
One end Connection Time relay KT one end, the time relay KT other end connect the transformer T output end other end.
2. a kind of pressurized tank pump control unit based on motor speed described in accordance with the claim 1, it is characterised in that: described
1# pumps connecting line between M1 and thermal overload relay RJ1 and arranges U1, V1, W1, and 2# pumps connecting line between M2 and thermal overload relay RJ2
Arrange U2, V2, W2.
3. a kind of pressurized tank pump control unit based on motor speed described in accordance with the claim 1, it is characterised in that: described
The input terminal both ends of transformer T are respectively arranged with fuse F1 and F2, and the both ends of the output end of transformer T are respectively arranged with fusing
Device F3 and F4.
4. a kind of pressurized tank pump control unit based on motor speed described in accordance with the claim 1, it is characterised in that: described
Output end one end of transformer T connects the one end power supply indicator H1, and the power supply indicator H1 other end connects transformer T output end
The other end.
5. a kind of pressurized tank pump control unit based on motor speed described in accordance with the claim 1, it is characterised in that: described
Output end one end connection contactor KM1 normally opened contact one end of transformer T and contactor KM2 normally opened contact one end, contactor KM1
The normally opened contact other end connects 1# and pumps the one end indicator light H2, and the contactor KM2 normally opened contact other end connects 2# and pumps indicator light H3 mono-
End, 1# pump the other end that the indicator light H2 other end connects transformer T output end with the 2# pump indicator light H3 other end.
6. a kind of pressurized tank pump control unit based on motor speed described in accordance with the claim 1, it is characterised in that: described
Output end one end connection relay KA1 normal open switch one end of transformer T and relay KA2 normal open switch one end, relay KA1
The normal open switch other end and the one end relay KA2 normal open switch other end connecting fault indicator light H4, malfunction indicator lamp H4 are another
The end connection transformer T output end other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699640.XA CN107366633B (en) | 2017-08-16 | 2017-08-16 | A kind of pressurized tank pump control unit based on motor speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699640.XA CN107366633B (en) | 2017-08-16 | 2017-08-16 | A kind of pressurized tank pump control unit based on motor speed |
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| Publication Number | Publication Date |
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| CN107366633A CN107366633A (en) | 2017-11-21 |
| CN107366633B true CN107366633B (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710699640.XA Active CN107366633B (en) | 2017-08-16 | 2017-08-16 | A kind of pressurized tank pump control unit based on motor speed |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124301A (en) * | 1978-03-20 | 1979-09-27 | Sanyo Electric Co Ltd | Sequential change gear of fan speed |
| CN202042882U (en) * | 2011-05-19 | 2011-11-16 | 李跃勇 | Circuit capable of realizing variable-frequency speed regulation and temperature protection circuit to fan |
| CN203742946U (en) * | 2014-03-24 | 2014-07-30 | 襄阳西顿自动化仪表有限公司 | Water-cooled air compressor energy saving device |
| CN204476826U (en) * | 2015-03-20 | 2015-07-15 | 浙江聚英风机工业有限公司 | A kind of fire-fighting Double Speed Fan control system |
| CN207278556U (en) * | 2017-08-16 | 2018-04-27 | 南通中船机械制造有限公司 | A kind of pressurized tank pump control unit based on motor speed |
-
2017
- 2017-08-16 CN CN201710699640.XA patent/CN107366633B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124301A (en) * | 1978-03-20 | 1979-09-27 | Sanyo Electric Co Ltd | Sequential change gear of fan speed |
| CN202042882U (en) * | 2011-05-19 | 2011-11-16 | 李跃勇 | Circuit capable of realizing variable-frequency speed regulation and temperature protection circuit to fan |
| CN203742946U (en) * | 2014-03-24 | 2014-07-30 | 襄阳西顿自动化仪表有限公司 | Water-cooled air compressor energy saving device |
| CN204476826U (en) * | 2015-03-20 | 2015-07-15 | 浙江聚英风机工业有限公司 | A kind of fire-fighting Double Speed Fan control system |
| CN207278556U (en) * | 2017-08-16 | 2018-04-27 | 南通中船机械制造有限公司 | A kind of pressurized tank pump control unit based on motor speed |
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| Publication number | Publication date |
|---|---|
| CN107366633A (en) | 2017-11-21 |
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