CN105207175A - Multifunctional protector for submersible pump - Google Patents
Multifunctional protector for submersible pump Download PDFInfo
- Publication number
- CN105207175A CN105207175A CN201510730146.6A CN201510730146A CN105207175A CN 105207175 A CN105207175 A CN 105207175A CN 201510730146 A CN201510730146 A CN 201510730146A CN 105207175 A CN105207175 A CN 105207175A
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- China
- Prior art keywords
- contactor
- phase
- input
- input end
- thermal relay
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- Control Of Ac Motors In General (AREA)
- Control Of Electric Motors In General (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a multifunctional protector for a submersible pump, and relates to the technical field of submersible pumps. The multifunctional protector adopts the structure that each of the input ends (L1, L2 and L3) of a three-phase power source is connected with a corresponding current transformer TA through a corresponding normally open contact of a first contractor KM1; the output end of each current transformer TA is connected with a corresponding power input end of a three-phase motor M; the input end of a second contactor KM1 is connected with the phase line of the input end L3; the output end of the second contactor KM1 is connected with one end of a thermal relay KH through a normally open contact of a first contractor KM2; the other end of the thermal relay KH is connected with the phase line of the input end L1; the three current transformers TA are separately connected with the thermal relay KH; the input end of a second contactor KM2 is connected with the phase line of the input end L2 through a control switch SB; the output of the second contactor KM2 is connected with the input end of the second contactor KM1. The multifunctional protector is simple in structure and high in practicability, can be utilized for avoiding the phenomenon that a motor is burned up due to overloading, phase failure and the like, and has a function of effectively protecting a single pumping well; therefore, the cost, time consumption and labor consumption are reduced, and the work efficiency is improved.
Description
Technical field
The present invention relates to immersible pump technical field, particularly relate to a kind of immersible pump multi-function protector.
Background technology
Immersible pump is the visual plant of deep-well water lift, and during use, whole unit pulls the plug work.Immersible pump unit by: water pump, submersible motor, water-supply-pipe and control switch form.Peak times of power consumption, power consumption is comparatively large, and cause agriculture to arrange user when using immersible pump, immersible pump is burnt, and affects the carrying out of work.
Further investigation reveals that main cause is agriculture row's circuit overload or phase shortage, and motor for submerged pump lacks supporting safeguard measure, the earth leakage protective device in transformer JP cabinet and circuit breaker cannot play available protecting to single motor-pumped well.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art; a kind of immersible pump multi-function protector is provided; structure is simple; practical; the phenomenon avoiding motor to burn because of reasons such as overload and phase shortages, plays available protecting effect to single motor-pumped well, cost-saving; time saving and energy saving, increase work efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is: input L1, L2 and L3 of three phase mains pass through the normally opened contact of contactor KM1, every electricity mutually connects 1 current transformer TA respectively, and current transformer TA output is connected with the power input of three phase electric machine M; Contactor KM1 input is connected with input phase line L3, and contactor KM1 output is connected with thermal relay KH one end by the normally opened contact of contactor KM2; Another termination input of thermal relay KH phase line L1; 3 current transformer TA are connected with thermal relay KH respectively; The input of contactor KM2 connects the input of the output connection contactor KM1 of phase line L2, contactor KM2 by control switch SB.
As preferably, contactor KM1 is 380V contactor.
As preferably, contactor KM2 is 380V contactor.
The beneficial effect adopting technique scheme to produce is: structure of the present invention is simple; by arranging the disconnection of current transformer and thermal relay control contactor; the phenomenon that motor for submerged pump burns because of overload or phase shortage can be avoided; avoid frequently changing motor, saved cost, practicality is stronger; time saving and energy saving; improve operating efficiency, the present invention is installed to each motor simultaneously, can protect single motor-pumped well.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1, be an embodiment of a kind of immersible pump multi-function protector of the present invention, input L1, L2 and L3 of three phase mains, by the normally opened contact of contactor KM1, control the break-make of three-phase electricity by contactor KM1; Every electricity mutually connects 1 current transformer TA respectively, and current transformer TA output is connected with the power input of three phase electric machine M; Contactor KM1 input is connected with input phase line L3, and when phase line L3 phase shortage, the normally opened contact of contactor KM1 disconnects, and motor is out of service; Contactor KM1 output is connected with thermal relay KH one end by the normally opened contact of contactor KM2; Another termination input of thermal relay KH phase line L1, during phase line L1 phase shortage, the normally opened contact of contactor KM2 disconnects, and then the normally opened contact of contactor KM1 disconnects, and motor is out of service; 3 current transformer TA are connected with thermal relay KH respectively, thermal relay KH be to during circuit overloads to the protection of motor, the bimetal leaf generation deformation of the different coefficient of expansion is made during overload, when reaching certain distance, just promote connecting rod action, control circuit is disconnected, thus makes contactor dead electricity, main circuit disconnects, and realizes the overload protection of motor; The input of contactor KM2 connects the input of the output connection contactor KM1 of phase line L2, contactor KM2 by control switch SB; A contactor can protect wherein two-phase automatically to disconnect when phase shortage, three-phase electricity circuit when phase shortage can be protected to disconnect, play a protective role to motor with two contactors.
Contactor KM1 and contactor KM2 is 380V contactor.
Operation principle:
Press control switch SB, contactor KM2 obtains electric, the normally opened contact of contactor KM2 is closed, the normally opened contact of contactor KM1 is closed, whole device starts, motor entry into service, when electric current is excessive cause motor overload time, thermal relay KH power-off can be triggered by the big current of current transformer TA, the normally opened contact of contactor KM2 be disconnected, contactor KM1 dead electricity, the normally opened contact of contactor KM1 disconnects, whole control circuit is in off state, motor stalls, and protection motor is not burnt or damages; When have in circuit have one phase point disappearance time, by the design of two contactors, any phase line phase shortage, control circuit all can disconnect, and motor is out of service.
Adopt after technique scheme, the three phase electric machine in immersible pump has had supporting safeguard measure, and to three phase electric machine overload, phase shortage is under-voltage plays a protective role, and prevents burn-down of electric motor from damaging, arranges bring convenience to agriculture.
Structure of the present invention is simple, and cost is lower, in operational use, only need by shift knob, there is not electric arc hidden danger in its equipment, simple and safe, is easy to promote the use of.
Claims (3)
1. an immersible pump multi-function protector, it is characterized in that: input L1, L2 and L3 of three phase mains pass through the normally opened contact of contactor KM1, every electricity mutually connects 1 current transformer TA respectively, and current transformer TA output is connected with the power input of three phase electric machine M; Contactor KM1 input is connected with input phase line L3, and contactor KM1 output is connected with thermal relay KH one end by the normally opened contact of contactor KM2; Another termination input of thermal relay KH phase line L1; 3 current transformer TA are connected with thermal relay KH respectively; The input of contactor KM2 connects the input of the output connection contactor KM1 of phase line L2, contactor KM2 by control switch SB.
2. a kind of immersible pump multi-function protector according to claim 1, is characterized in that described contactor KM1 is 380V contactor.
3. a kind of immersible pump multi-function protector according to claim 1, is characterized in that described contactor KM2 is 380V contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730146.6A CN105207175A (en) | 2015-11-02 | 2015-11-02 | Multifunctional protector for submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730146.6A CN105207175A (en) | 2015-11-02 | 2015-11-02 | Multifunctional protector for submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105207175A true CN105207175A (en) | 2015-12-30 |
Family
ID=54954687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510730146.6A Pending CN105207175A (en) | 2015-11-02 | 2015-11-02 | Multifunctional protector for submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105207175A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165559Y (en) * | 1993-09-24 | 1994-05-18 | 李德常 | Motor protector |
| CN2725421Y (en) * | 2004-08-21 | 2005-09-14 | 杨小建 | Starting device of concrete vibrator |
| CN102035180A (en) * | 2010-12-07 | 2011-04-27 | 河南省电力公司许昌供电公司 | Comprehensive protection device for three-phase alternating current asynchronous motor |
| US20120075754A1 (en) * | 2010-09-27 | 2012-03-29 | Emerson Climate Technologies, Inc. | Systems and methods for protecting three-phase motors |
| CN203406599U (en) * | 2013-06-18 | 2014-01-22 | 宝钢不锈钢有限公司 | Impact-proof motor thermorelay protector |
| CN205141636U (en) * | 2015-11-02 | 2016-04-06 | 国家电网公司 | Multi -functional protector of immersible pump |
-
2015
- 2015-11-02 CN CN201510730146.6A patent/CN105207175A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165559Y (en) * | 1993-09-24 | 1994-05-18 | 李德常 | Motor protector |
| CN2725421Y (en) * | 2004-08-21 | 2005-09-14 | 杨小建 | Starting device of concrete vibrator |
| US20120075754A1 (en) * | 2010-09-27 | 2012-03-29 | Emerson Climate Technologies, Inc. | Systems and methods for protecting three-phase motors |
| CN102035180A (en) * | 2010-12-07 | 2011-04-27 | 河南省电力公司许昌供电公司 | Comprehensive protection device for three-phase alternating current asynchronous motor |
| CN203406599U (en) * | 2013-06-18 | 2014-01-22 | 宝钢不锈钢有限公司 | Impact-proof motor thermorelay protector |
| CN205141636U (en) * | 2015-11-02 | 2016-04-06 | 国家电网公司 | Multi -functional protector of immersible pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
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| RJ01 | Rejection of invention patent application after publication |