CN206111517U - Water pump controller - Google Patents
Water pump controller Download PDFInfo
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- CN206111517U CN206111517U CN201621135100.6U CN201621135100U CN206111517U CN 206111517 U CN206111517 U CN 206111517U CN 201621135100 U CN201621135100 U CN 201621135100U CN 206111517 U CN206111517 U CN 206111517U
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Abstract
The utility model discloses a water pump controller, its technical scheme main points be including: electrical unit, detecting element, it has a pressure detection switch and a flow measurement switch to according to the action of pressure detection switch and this flow measurement switch with output control signal, the switch element, it has first input end, second input and an output, its first input end be coupled in detecting element in order to receive control signal, the second input is coupled in this electrical unit's second output, its coupled to the output end in this second wiring end, one dabs the switch, and its one end is coupled between switch element and detecting element, its other end ground connection, infrared sensing unit, whether its housing face who locates water pump controller is used for detecting its infrared light that sends and is cut off in order to export corresponding infrared detection signal, the control unit, it is coupled in infrared sensing unit in order to receive infrared detection signal to it can be started to dab the switch in response to infrared detection signal with control.
Description
Technical field
This utility model is related to water pump control field, more particularly to a kind of water pump controller.
Background technology
Water pump controller is to go to open according to data such as detected water source state, pipeline-used water amount and pipeline pressure changes
Dynamic and stopping water pump, the tradition system that it can be made up of pressurized tank, pressure switch, water-shortage protection device, check-valves, four-way etc.
System.Live part makes the controller have legacy system to be compared with the security isolation of pipeline and the control chamber of high leakproofness
The safety of plan.
At present, the Chinese patent of Application No. CN201420588006.0 discloses a kind of Simple water pump controller, and it is wrapped
Power subsystem, detector unit and switch element are included, detector unit has a pressure detection switch and a flow measuring valve,
According to the action of the pressure detection switch and flow measuring valve exporting a control signal；Switch element is with the first input
End, the second input and outfan, its first input end is coupled to the control signal, and the second input is coupled to the power supply list
The outfan of unit, its outfan is coupled to second terminals.
Also there is a touch-switch on switch element, as shown in Figure 1, water pump controller includes housing, and this is touched out
Pass is protruded from outside housing, and when the touch-switch is pressed, water pump will be forced to open, and in every day use, water pump controller
Typically place together with water pump, if staff is unfamiliar with the use of water pump controller, when water pump controller is operated not
The touch-switch is carefully pressed, touch-switch will trigger the startup of water pump, be easily caused the damage that water pump idle running causes water pump, from
And the reduction of the service life of water pump is caused, therefore there are certain improvements in this water pump controller.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of water pump controller, prevents work
Make personnel's maloperation pressing touch-switch and start water pump, improve water pump service life.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of water pump controller, including：
Power subsystem, with the first terminals and the second terminals, the first terminals are coupled to civil power and first defeated at it
Go out the first unidirectional current of end output, the second outfan and export the second unidirectional current, the second terminals are coupled to the first terminals for connecting
The power line of water pump；
Detector unit, it has a pressure detection switch and a flow measuring valve, and according to pressure detection switch and
The action of the flow measuring valve is with output control signal；
Switch element, it has first input end, the second input and outfan, and its first input end is coupled to detection
To receive control signal, the second input is coupled to the second outfan of the power subsystem to unit, its outfan be coupled to this
Two terminals；
One touch-switch, its one end is coupled between switch element and detector unit, its other end ground connection；Also include：
Infrared detection unit, it is located at the surface of shell of water pump controller, for detecting whether is infrared light that it sends
Separated to export corresponding infrared detection signal；
Control unit, it is coupled to infrared detection unit with receiving infrared-ray detection signal, and in response to infrared ray inspection
Surveying signal can be activated with controlling touch-switch.
By above-mentioned technical proposal, pressure detection switch is used to detect the pressure condition in pipeline（Whether hydropenia）, flow
Detection switch is used for detecting whether the water in pipeline flows（Whether valve is opened）, when the interior not hydropenia of pipeline and valve opening, open
Closing unit will control starting mode of pump；Wherein, a touch-switch is connected between detector unit and switch element, touch-switch
The use of emergency case water pump is disposed to, hydraulic pressure is not enough such as in pipeline, but needs water source, now touch-switch just can draw
The water of a part is using；If staff is unfamiliar with the use of water pump controller, long-time or continual pressing are touched out
Close, water pump long-time will be caused dynamic in overload in idle running or not stop and start（The moment of starting mode of pump, pump motor
Output current is very big）, easily cause the damage of water pump；By the setting of infrared detection unit, when needing to start touch-switch, use
The infrared light that finger cut-off infrared detection unit sends, controlling touch-switch by control unit can be activated, and first separate again
The mode of pressing touch-switch, in the maloperation for a certain degree preventing staff, to improve the service life of water pump.
Preferably, described control unit includes control unit and from lock section, and the control unit is in response to infrared detection signal
Can be activated for controlling touch-switch, it is described to be coupled to control unit for keeping touch-switch to be in what is be activated from lock section
State.
Preferably, the control unit includes：
Second audion, its base stage is coupled on the outfan of infrared detection unit, and its colelctor electrode is coupled to power supply list
Second outfan of unit；
First relay, one end of its coil is coupled to the emitter stage of the second audion, and the other end of its coil is grounded, its
With the first normally opened contact and the second normally opened contact, its first normally opened contact is connected on the current supply circuit of touch-switch, and it
Two normally opened contacts are connected on from the current supply circuit of lock section.
By above-mentioned technical proposal, by the setting from lock section, when staff needs to press touch-switch, it is only necessary to every
The disconnected infrared light that once infrared detection unit sends, touch-switch state just in being activated, without the need for a handss go every
Disconnected infrared light, another handss just go to operate touch-switch, so as to effectively increase the practicality of circuit.
Preferably, it is coupled with described control unit for the reset unit resetted from lock section.
Preferably, the reset unit includes time delay portion and enforcement division, and the time delay portion is coupled to control unit to receive
The control signal of control unit output simultaneously exports corresponding time delayed signal after Preset Time, and the enforcement division is coupled to time delay portion
With reception delay signal and in response to time delayed signal cutting off the current supply circuit from lock section.
Preferably, the time delay portion is 555 delay circuits.
By above-mentioned technical proposal, if the setting without reset unit, after cut-off infrared light, touch-switch will be in all the time
The state that self-locking can be activated, by way of time-delay reset, after staff is with handss cut-off infrared light, time delay portion begins to
Timing, within this time staff go operate touch-switch, to have operated touch-switch after disconnect touch-switch power supply return
Road, so as to further increase the convenience that circuit is used.
Preferably, the enforcement division includes：
24th resistance, its one end is coupled on the outfan in time delay portion；
25th resistance, its one end is coupled to the other end of the 24th resistance, its other end ground connection；
3rd audion, its base stage is coupled on the junction point between the 24th resistance and the 25th resistance, its
Emitter grounding；
3rd relay, one end of its coil is coupled to the colelctor electrode of the 3rd audion, and the other end of its coil is coupled to
Second outfan of power subsystem, its normally-closed contact is connected on from the current supply circuit of lock section；
6th diode, its two ends inverse parallel is on the coil of the 3rd relay.
By above-mentioned technical proposal, the 3rd audion is used as switching tube, is quick on the draw；3rd relay just has electrically
The characteristic of isolation, improves the safety that circuit is used；6th diode, can be in the 3rd relay power-off used as fly-wheel diode
Afterwards, the electric power remained in the 3rd relay coil is discharged, the purpose of protection circuit is played.
Preferably, the power subsystem includes：
First pressure unit, its input is coupled to civil power, to export first unidirectional current；
Second pressure unit, its input is coupled to the first pressure unit, to export second unidirectional current；
Filter circuit, it is connected in series between civil power and the first pressure unit, for filtering civil power in harmonic wave.
In sum, this utility model having the beneficial effect that in contrast to prior art：By setting for infrared detection unit
Put, when needing to start touch-switch, with finger the infrared light that infrared detection unit sends is separated, it is light by control unit control
Tactile switch can be activated, and first separate the mode for pressing touch-switch again, in the maloperation for a certain degree preventing staff, to carry
The service life of high water pump.
Description of the drawings
Fig. 1 is the structural representation of water pump controller housing；
Fig. 2 is the circuit diagram of water pump controller；
Fig. 3 is the circuit diagram of infrared detection unit；
Fig. 4 is the circuit diagram in control unit and time delay portion；
Fig. 5 is the circuit diagram of enforcement division.
Reference：1st, housing；2nd, infrared detection unit；201st, RF transmitter；202nd, infrared receiver；3、
Control unit；301st, control unit；Q2, the second audion；KM1, the first relay；KM1-1, the first normally opened contact；KM1-2,
Two normally opened contacts；302nd, from lock section；4th, time delay portion；5th, enforcement division；R24, the 24th resistance；R25, the 25th resistance；Q3、
3rd audion；D6, the 6th diode；KM3, the 3rd relay；J1, the first terminals；J2, the second terminals；T1, pressure inspection
Slowdown monitoring switch；T2, flow measuring valve；SW, touch-switch.
Specific embodiment
This utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one, with reference to shown in Fig. 1 and Fig. 2：
A kind of water pump controller, it includes a housing 1, also includes：Power subsystem, connects with the first terminals J1 and second
Line end J2, the first terminals J1 are coupled to civil power and export the first unidirectional current Vout_1, the second outfan in its first outfan
The second unidirectional current Vout_2 is exported, the second terminals J2 is coupled to the first terminals J1 for connecting the power line of water pump；Detection
Unit, it has an a pressure detection switch T1 and flow measuring valve T2, and according to pressure detection switch T1 and the flow
The action of detection switch T2 is with output control signal；Switch element, it has first input end, the second input and output
End, its first input end is coupled to detector unit to receive control signal, and the second input is coupled to the second of the power subsystem
Outfan, its outfan is coupled to second terminals J2；One touch-switch SW, its one end is coupled to switch element and detection is single
Between unit, its other end ground connection；Also include：
Infrared detection unit 2, it is located at the surface of housing 1 of water pump controller, for detecting that its infrared light for sending is
It is no to be separated to export corresponding infrared detection signal；
Control unit 3, it is coupled to infrared detection unit 2 with receiving infrared-ray detection signal, and in response to infrared ray
Detection signal can be activated with controlling touch-switch SW.
Control unit 3 includes control unit 301 and from lock section 302, and control unit 301 is used to control in response to infrared detection signal
Touch-switch SW processed can be activated, and control unit 301 is coupled to for keeping touch-switch SW to be in what is can be activated from lock section 302
State.
Power subsystem, detector unit, switch element, control unit 3 are arranged in housing 1, and touch-switch SW is protruded from
The outer surface of housing 1 makes it possible to touch pressing by staff, and infrared detection unit 2 is arranged on the lateral wall of housing 1.
As shown in Fig. 2 in the present embodiment, pressure detection switch T1 is pressure switch, and when no pressure, pressure switch is inhaled
Conducting is closed, when having pressure, is disconnected；Flow measuring valve T2 is valve detection tongue tube, when the water retention fluid stopping in pipeline is dynamic, should
The adhesive of valve detection tongue tube is turned on（That is flow measuring valve T2 is turned on）.Both the above detection switch is prior art, this
Art personnel should be understood its operation principle and specific embodiment, and the present embodiment is repeated no more.
Power subsystem includes：First pressure unit, its input is coupled to civil power, to export first unidirectional current Vout_
1；Second pressure unit, its input is coupled to the first pressure unit, to export second unidirectional current Vout_2；Filter circuit,
It is connected in series between civil power and the first pressure unit, for filtering civil power in harmonic wave.One protection element, its one end coupling
In filter circuit, its other end ground connection, in the present embodiment, protection element is varistor VR1.
The circuit diagram of the first pressure unit and the second pressure unit is as shown in Figure 2.
Filter circuit is RC parallel filtering circuits, and filter circuit includes first resistor R1 and the first electric capacity C1；The filtered electrical
Road is used to prevent the low-order harmonic in civil power from causing unnecessary impact to the circuit of whole water pump controller.
The power subsystem also includes the 4th resistance R4 and the 3rd LED 3, when the first terminals J1 is linked into city
When electric, the 3rd LED 3 must conduct luminous（Green glow）.
Detector unit also includes：First NAND gate circuit U1, with first input end, the second input and outfan,
Its first outfan is coupled to flow measuring valve T2, and its second input is coupled to power subsystem by the 7th resistance R7
Second outfan；12nd resistance R12, its one end is coupled to the first input end of first NAND gate circuit U1, other end coupling
The positive pole of the 3rd diode D3 is connected to, the negative pole of the 3rd diode D3 is coupled to the positive pole of the second LED 2, should
The negative pole of the second LED 2 is coupled to the second outfan of power subsystem by the 6th resistance R6；4th electric capacity C4,
It is coupled between second input of the negative pole of the second LED 2 and the first NAND gate circuit U1；8th resistance R8,
It is coupled between the first input end of the first NAND gate circuit U1 and earth terminal；4th diode D4, its positive pole be coupled to this
The outfan of one NAND gate circuit U1, its negative pole is coupled to the second outfan of power subsystem by the 5th electric capacity C5；Second with
Not circuit U2, couples with first input end, the second input and outfan, its first input end and the second input
In the negative pole of the 4th diode D4, its outfan is coupled to switch element by the tenth resistance R10；9th resistance R9, coupling
Between the negative pole and earth terminal of the 4th diode D4；Pressure detection switch T1, its one end is coupled to the second light emitting diode
The negative pole of LED2, its other end ground connection.
Switch element includes：3rd NAND gate circuit U3, with first input end, the second input and outfan, its
First input end and the second input are coupled to detector unit；6th electric capacity C6, its one end is coupled to the 3rd NAND gate circuit
The first input end of U3 and the second input, its other end ground connection；First audion Q1, its base stage passes through the 11st resistance R11
The outfan of the 3rd NAND gate circuit U3 is coupled to, its grounded emitter；Second relay KM2, its coil one end is coupled to electricity
First outfan of source unit, the other end is coupled to the colelctor electrode of the first audion Q1 by the 5th resistance R5, its normally opened contact
Switch S is serially connected between the second terminals J2 and first terminals J1；Second diode D2, its negative pole is coupled to power supply list
The first input end of unit, its positive pole is coupled between the coil of the 5th resistance R5 and the second relay KM2；First light emitting diode
LED1, its negative pole is coupled to the colelctor electrode of the first audion Q1, and its positive pole is coupled to the positive pole of the second diode D2.
Infrared detection unit 2 includes infrared receiver 202 and RF transmitter 201, infrared detection unit 2
Circuit diagram is as shown in figure 3, after the power supply for connecting RF transmitter 201, output duty cycle is 1 by three feet of 555 chips:5、
Frequency is the square wave of 1kHz, and for encouraging infrared transmitting tube L1 to send infrared light pulse, circuit structure is simple, and reliability is high.
17th resistance R17 and the 19th resistance R19 constitutes bleeder circuit, and the in-phase end for first comparator N1 provides base
Quasi- magnitude of voltage, reference voltage value is determined by the 19th resistance R19 shared in voltage VDD ratio, as infrared receiving tube L2
Electric current can be produced when receiving the infrared light that infrared transmitting tube L1 sends, and as infrared light becomes strong from weak, the electricity of its output
Stream can also be followed from little and become big so that the voltage of the 18th resistance R18 becomes big, and the anti-phase terminal voltage of first comparator N1 gradually rises
It is high；When the voltage of end of oppisite phase is more than the reference voltage value of in-phase end（Infrared receiver 202 receives RF transmitter
201 infrared lights for sending）, the outfan output low level signal of first comparator N1, the control touch-switch of control unit 3 SW is not
Can be activated；Conversely, when infrared receiving tube L2 does not receive infrared light（Staff separates RF transmitter with handss
201 infrared lights for sending）, close to zero, now the outfan of first comparator N1 is defeated for the anti-phase terminal voltage of first comparator N1
Go out high level signal, the control touch-switch SW of control unit 3 can be activated.
Control unit 301 includes：Second audion Q2, its base stage is coupled on the outfan of infrared detection unit 2, its collection
Electrode is coupled to the second outfan of power subsystem；First relay KM1, one end of its coil is coupled to the second audion Q2's
Emitter stage, the other end ground connection of its coil, it has the first normally opened contact KM1-1 and the second normally opened contact KM1-2, and it is first normal
Open contact KM1-1 to be connected on the current supply circuit of touch-switch SW, its second normally opened contact KM1-2 is connected on from lock section 302
On current supply circuit.
Include from lock section 302：21st resistance R21, its one end connects power subsystem by the second normally opened contact KM1-2
The second outfan；Its other end is coupled to after photo-coupler G1 and is grounded；22nd resistance R22, its one end is coupled to second
One end of 11 resistance R21, its other end is coupled to after photo-coupler G1 the one end for the coil for being coupled to the first relay KM1.
Embodiment two, based on embodiment one on the basis of, with reference to shown in Fig. 4 and Fig. 5：
It is coupled with control unit 3 for the reset unit resetted from lock section 302.
Reset unit includes time delay portion 4 and enforcement division 5, and it is defeated with reception control unit 3 that time delay portion 4 is coupled to control unit 3
The control signal that goes out simultaneously exports corresponding time delayed signal after Preset Time, and enforcement division 5 is coupled to time delay portion 4 with reception delay letter
Number and in response to time delayed signal cutting off the current supply circuit from lock section 302.
Time delay portion 4 is 555 delay circuits.The circuit diagram in time delay portion 4 is as shown in figure 4,555 delay circuit includes 555 cores
Piece, the 11st electric capacity C11, the 23rd resistance R23 and the 12nd electric capacity C12；11st electric capacity C11 passes through the first relay
Connect the second outfan of power subsystem after the 3rd normally opened contact KM1-3 of KM1；One end of 23rd resistance R23 is coupled to
2 feet of 555 chips, its other end ground connection；One end of 12nd electric capacity C12 is coupled to 5 feet of 555 chips, its other end ground connection.
Enforcement division 5 includes：24th resistance R24, its one end is coupled on the outfan in time delay portion 4；25th is electric
Resistance R25, its one end is coupled to the other end of the 24th resistance R24, its other end ground connection；3rd audion Q3, its base stage coupling
It is connected on the junction point between the 24th resistance R24 and the 25th resistance R25, its grounded emitter；3rd relay
KM3, one end of its coil is coupled to the colelctor electrode of the 3rd audion Q3, and the other end of its coil is coupled to the second of power subsystem
Outfan, its normally-closed contact is connected on from the current supply circuit of lock section 302；6th diode D6, its two ends inverse parallel is the 3rd
On the coil of relay KM3.
The course of work：
Under peacetime state, the first normally opened contact KM1-1 of the first relay KM1 disconnects the power supply time of touch-switch SW
Road so that touch-switch SW can not be activated；
Before needing to use touch-switch SW, staff needs to separate what RF transmitter 201 sent with handss in advance
Infrared light so that the base stage of the infrared detection signal to the second audion Q2 of the output high level of infrared receiver 202, second
Audion Q2 is turned on, and the light emitting diode of photo-coupler G1 obtains electric so that the base stage of the phototriode of photo-coupler G1 is received
To illumination, phototriode conducting, the coil for controlling the first relay KM1 obtains electric, inhales and the first normally opened contact KM1-1 is to turn on
The current supply circuit of touch-switch SW so that touch-switch SW can be activated；
The coil of the first relay KM1 is accordingly inhaled and its second normally opened contact KM1-2, the first relay KM1 is completed certainly
Lock；Inhale and the 3rd normally opened contact KM1-3, Time delay portion 4 starts working, and time delay portion 4 is after the scheduled time（The predetermined time by
The capacity of the 11st electric capacity C11 and the resistance of the 23rd resistance R23 are determined）, the outfan output high level in time delay portion 4 prolongs
When signal to the 3rd audion Q3 base stage, the 3rd audion Q3 conducting, control the 3rd relay KM3 obtain electric, disconnect its normally closed
Contact KM3-1, releases the self-locking state from lock section 302 so that states of the touch-switch SW in being activated.
The above is only exemplary embodiment of the present utility model, not for restriction protection model of the present utility model
Enclose, protection domain of the present utility model is determined by appended claim.
Claims (8)
1. a kind of water pump controller, including：
Power subsystem, with the first terminals (J1) and the second terminals (J2), the first terminals (J1) be coupled to civil power and
Its first outfan exports the first unidirectional current, the second outfan and exports the second unidirectional current, and the second terminals (J2) are coupled to first
Terminals (J1) are used to connect the power line of water pump；
Detector unit, it has a pressure detection switch (T1) and a flow measuring valve (T2), and according to pressure detection switch
(T1) and the flow measuring valve (T2) action with output control signal；
Switch element, it has first input end, the second input and outfan, and its first input end is coupled to detector unit
To receive control signal, the second input is coupled to the second outfan of the power subsystem, and its outfan is coupled to this and second connects
Line end (J2)；
One touch-switch (SW), its one end is coupled between switch element and detector unit, its other end ground connection；It is characterized in that,
Also include：
Infrared detection unit (2), it is located at housing (1) surface of water pump controller, for detecting that its infrared light for sending is
It is no to be separated to export corresponding infrared detection signal；
Control unit (3), it is coupled to infrared detection unit (2) with receiving infrared-ray detection signal, and in response to infrared ray
Detection signal can be activated with controlling touch-switch (SW).
2. water pump controller according to claim 1, is characterized in that, described control unit (3) including control unit (301) and
From lock section (302), the control unit (301) can be activated in response to infrared detection signal for controlling touch-switch (SW),
It is described to be coupled to control unit (301) for keeping state of the touch-switch (SW) in being activated from lock section (302).
3. water pump controller according to claim 2, is characterized in that, the control unit (301) includes：
Second audion (Q2), its base stage is coupled on the outfan of infrared detection unit (2), and its colelctor electrode is coupled to power supply
Second outfan of unit；
First relay (KM1), one end of its coil is coupled to the emitter stage of the second audion (Q2), another termination of its coil
Ground, it has the first normally opened contact (KM1-1) and the second normally opened contact (KM1-2), and its first normally opened contact (KM1-1) is connected on
On the current supply circuit of touch-switch (SW), its second normally opened contact (KM1-2) is connected on from the current supply circuit of lock section (302).
4. water pump controller according to claim 2, is characterized in that, be coupled with described control unit (3) for certainly
The reset unit that lock section (302) is resetted.
5. water pump controller according to claim 4, is characterized in that, the reset unit includes time delay portion (4) and performs
Portion (5), the control signal that the time delay portion (4) is coupled to control unit (3) and is exported with reception control unit (3) and when default
Between after the corresponding time delayed signal of output, the enforcement division (5) is coupled to time delay portion (4) with reception delay signal and in response to time delay
Signal is cutting off the current supply circuit from lock section (302).
6. water pump controller according to claim 5, is characterized in that, the time delay portion (4) is 555 delay circuits.
7. water pump controller according to claim 5, is characterized in that, the enforcement division (5) includes：
24th resistance (R24), its one end is coupled on the outfan of time delay portion (4)；
25th resistance (R25), its one end is coupled to the other end of the 24th resistance (R24), its other end ground connection；
3rd audion (Q3), its base stage is coupled to the connection between the 24th resistance (R24) and the 25th resistance (R25)
On point, its grounded emitter；
3rd relay (KM3), one end of its coil is coupled to the colelctor electrode of the 3rd audion (Q3), the other end coupling of its coil
The second outfan of power subsystem is connected to, its normally-closed contact is connected on from the current supply circuit of lock section (302)；
6th diode (D6), its two ends inverse parallel is on the coil of the 3rd relay (KM3).
8. water pump controller according to claim 1, is characterized in that, the power subsystem includes：
First pressure unit, its input is coupled to civil power, to export first unidirectional current；
Second pressure unit, its input is coupled to the first pressure unit, to export second unidirectional current；
Filter circuit, it is connected in series between civil power and the first pressure unit, for filtering civil power in harmonic wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621135100.6U CN206111517U (en) | 2016-10-19 | 2016-10-19 | Water pump controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621135100.6U CN206111517U (en) | 2016-10-19 | 2016-10-19 | Water pump controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206111517U true CN206111517U (en) | 2017-04-19 |
Family
ID=58526957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621135100.6U Expired - Fee Related CN206111517U (en) | 2016-10-19 | 2016-10-19 | Water pump controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206111517U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107918044A (en) * | 2017-12-28 | 2018-04-17 | 优利德科技(中国)有限公司 | A kind of universal meter current measurement overheat detecting and early warning device and method for early warning |
| CN110080973A (en) * | 2018-01-26 | 2019-08-02 | 中国石油天然气股份有限公司 | Unloading pump in-situ protection control device with mistake proofing and error correction |
-
2016
- 2016-10-19 CN CN201621135100.6U patent/CN206111517U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107918044A (en) * | 2017-12-28 | 2018-04-17 | 优利德科技(中国)有限公司 | A kind of universal meter current measurement overheat detecting and early warning device and method for early warning |
| CN110080973A (en) * | 2018-01-26 | 2019-08-02 | 中国石油天然气股份有限公司 | Unloading pump in-situ protection control device with mistake proofing and error correction |
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