CN201298176Y - Oil pump controlling cabinet of transformer cooling fan - Google Patents

Oil pump controlling cabinet of transformer cooling fan Download PDF

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Publication number
CN201298176Y
CN201298176Y CNU2008202244087U CN200820224408U CN201298176Y CN 201298176 Y CN201298176 Y CN 201298176Y CN U2008202244087 U CNU2008202244087 U CN U2008202244087U CN 200820224408 U CN200820224408 U CN 200820224408U CN 201298176 Y CN201298176 Y CN 201298176Y
Authority
CN
China
Prior art keywords
switch
motor
closed contact
contactor
normally closed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008202244087U
Other languages
Chinese (zh)
Inventor
咸日常
孙娜
张亮
郭方营
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG ZHONGRUI ELECTRIC CO Ltd
Original Assignee
SHANDONG ZHONGRUI ELECTRIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG ZHONGRUI ELECTRIC CO Ltd filed Critical SHANDONG ZHONGRUI ELECTRIC CO Ltd
Priority to CNU2008202244087U priority Critical patent/CN201298176Y/en
Application granted granted Critical
Publication of CN201298176Y publication Critical patent/CN201298176Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides oil pump controlling cabinet of transformer cooling fan, including circuit breakers ZK concatenated in each motor main circuit and a plurality of motor control modules, in each motor control module, contactor KM coil merge with auxiliary normally open contact and auxiliary normally-closed contact after series connecting with normally-closed contact of thermal relay FR, one end connecting power and another end connecting zero line via switch K, main contacting points of contactor KM is concatenated in each motor main circuit, which is characterized in that: adding analog-to-digital conversion module, programmable controller and touch screen connected with the same, and all adding a intermediate relay J specific to each motor control module, normally-closed contacts of each intermediate relay all corresponding concatenated between switch K and zero line, wherein input terminal of the programmable controller is connected with analog-to-digital conversion module and output terminal is connected with the joint of switch K and intermediate relay J normally-closed contact.The utility model is able to implement auto-switching and failure switching of motor controlled by temperature automatically with superior function.

Description

Transformer cooling blower oil pump switch board
Technical field
The utility model provides a kind of transformer cooling blower oil pump switch board, belongs to Programmable Logic Controller automatic monitoring control technology field.
Background technology
The purpose of transformer cooling switch board be controlled to be the transformer oil cooling the blower fan oil pump startup and stop, preventing that temperature of oil in transformer is overheated.The technical scheme of switch board was in the past: comprise the isolating switch, contactor and the corresponding electrothermal relay that is serially connected in each motor main circuit that are serially connected in the motor main circuit, wherein an end of contactor coil through normally closed contact and the isolating switch of the electrothermal relay of serial connection connect three-phase supply one mutually, other end connecting to neutral line, the main contacts of contactor is serially connected in every group of motor main circuit, one end connects three-phase supply through isolating switch, the electrothermal relay of another each motor of termination.During work, the isolating switch in arbitrary motor main circuit that closes, corresponding motor entry into service; Disconnect the isolating switch of arbitrary operated motor correspondence, corresponding motor shuts down.
The whole operation process is that manually control procedure is too simple, and is slow to the reacting condition of oil temperature, and fault handling is untimely.The height and the failure cause of judgement oil temperature that can be rough under the situation of transformer station's Attended mode are come manual switching blower fan oil pump; Just make the blower fan oil pump often be in running or the state that stops for a long time behind transformer station's unmanned, both uneconomical also dangerous, also influence serviceable life of blower fan oil pump.
The utility model content
The purpose of this utility model provides a kind of equipment and guarantees that operating transformer can improve power supply reliability in time with the heat discharge of self.Its technical scheme is:
Comprise the isolating switch ZK a plurality of motor control modules identical that are serially connected in every group of motor main circuit with structure, each motor control module includes contactor KM, K switch and the corresponding electrothermal relay FR that is serially connected in each motor main circuit, wherein an end of contactor KM coil connects power supply through the normally closed contact of the electrothermal relay FR of serial connection, the other end is through K switch connecting to neutral line, the auxiliary normally opened contact of contactor KM and auxiliary normally closed contact also connect back one termination power, the other end is through K switch connecting to neutral line, the main contacts of contactor KM is serially connected in every group of motor main circuit, one end connects three-phase supply through isolating switch ZK, the electrothermal relay FR of another each motor of termination, it is characterized in that: set up analog-to-digital conversion module, Programmable Logic Controller and connected touch-screen, wherein the input termination of analog-to-digital conversion module is installed in the temperature sensor on the transformer, output termination Programmable Logic Controller, and all set up an auxiliary reclay J at each motor control module, the equal correspondence of the normally closed contact of each auxiliary reclay J is serially connected between K switch and the zero line, the junction of the output termination K switch of Programmable Logic Controller and auxiliary reclay J normally closed contact.
Described transformer cooling blower oil pump switch board is connected to disconnecting link DZ between the end of incoming cables of two groups of three-phase supply.
Its principle of work is: the isolating switch ZK in close disconnecting link and the every group of motor main circuit, K switch in each motor control module is got to " automatically " retaining, the normally closed contact of Programmable Logic Controller output signal control auxiliary reclay J disconnects, and the switch board of Programmable Logic Controller output signal control simultaneously connects.When temperature sensor recorded the transformer temperature less than 55 ℃, the contactor KM in motor control module of Programmable Logic Controller output control signal control got electric, made this group motor entry into service; When temperature rise to surpass 55 ℃, Programmable Logic Controller output control signal was controlled contactor KM in another motor control module and is got electricly, makes another group motor entry into service, is the transformer cooling, by that analogy; When the transformer temperature dropped to 45 ℃, the anti-order that Programmable Logic Controller output control signal puts into operation according to each group motor was controlled it successively and is shut down, and realizes that motor is subjected to temperature controlled automatic switching.
When in the normally closed contact of the electrothermal relay FR of one group of blower fan oil pump the fault of at least one disconnection being arranged, the feasible contactor KM coil blackout that connects this normally closed contact, cause the main contacts of this contactor KM to disconnect, make this group motor shut down, the coil that Programmable Logic Controller output this moment control signal is controlled another winding tentaculum KM gets electric, its main contacts adhesive, the feasible motor entry into service that is connected with another winding tentaculum KM; After fault is got rid of, the coil of its contactor KM again, make this group motor entry into service, coil losing electricity, its main contacts that Programmable Logic Controller output control signal is controlled another winding tentaculum disconnect, make the motor that is connected with another winding tentaculum KM shut down, realize the fault switching of motor.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is the wiring diagram of the utility model embodiment;
Fig. 3 is the wiring diagram of another embodiment of the utility model.
Among the figure: 1, Programmable Logic Controller 2, motor 3, touch-screen 4, analog-to-digital conversion module 5, motor control module 6, temperature sensor
Embodiment
In the embodiment shown in Fig. 1-2: two groups of three-phase supply that connect through disconnecting link DZ, 2 groups of motors and 2 motor control modules 5 that structure is identical are arranged, 3 motor 2 correspondences in 2, the 1 groups in 3 motors are arranged in every group of motor through electrothermal relay 1FR 1-3Connect the back, connect 1 group of three-phase supply through contactor 1KM, isolating switch 1ZK successively again, 3 motor 2 correspondences in the 2nd group are through electrothermal relay 2FR 1-3Connect the back, connect 2 groups of three-phase supply through contactor 2KM, isolating switch 2ZK successively again; One end of the contactor 1KM coil in the 1st motor control module 5 is through the electrothermal relay 1FR of serial connection 1-3Normally closed contact connect power supply, the other end is through K switch connecting to neutral line, the auxiliary normally opened contact of contactor 1KM and auxiliary normally closed contact also connect back one termination power, the other end is through K switch connecting to neutral line, the normally closed contact of auxiliary reclay J is serially connected between K switch and the zero line; One end of the contactor 2KM coil in the 2nd motor control module 5 is through the electrothermal relay 2FR of serial connection 1-3Normally closed contact connect power supply, the other end is through K switch connecting to neutral line, the auxiliary normally opened contact of contactor 2KM and auxiliary normally closed contact also connect back one termination power, the other end is through K switch connecting to neutral line, the normally closed contact of auxiliary reclay J is serially connected between K switch and the zero line.The input end of Programmable Logic Controller 1 connects the temperature sensor 6 that is installed on the transformer through analog-to-digital conversion module 4, the junction of K switch and auxiliary reclay J normally closed contact in its each motor control module 5 of output termination.
Embodiment 3 just has 3 groups of motors and 3 motor control modules 5 that structure is identical basically with embodiment 1, and principle of work is the same.

Claims (2)

1, a kind of transformer cooling blower oil pump switch board, comprise the isolating switch ZK a plurality of motor control modules (5) identical that are serially connected in every group of motor main circuit with structure, each motor control module (5) includes contactor KM, K switch and correspondence are serially connected in the normally closed contact of the electrothermal relay FR in each motor (2) major loop, wherein an end of contactor KM coil connects power supply through the normally closed contact of the electrothermal relay FR of serial connection, the other end is through K switch connecting to neutral line, the auxiliary normally opened contact of contactor KM and auxiliary normally closed contact also connect back one termination power, the other end is through K switch connecting to neutral line, the main contacts of contactor KM is serially connected in every group of motor main circuit, one end connects three-phase supply through isolating switch ZK, the electrothermal relay FR of each motor of another termination (2), it is characterized in that: set up analog-to-digital conversion module (4), Programmable Logic Controller (1) and connected touch-screen (3), wherein the input termination of analog-to-digital conversion module (4) is installed in the temperature sensor (6) on the transformer, output termination Programmable Logic Controller (1), and all set up an auxiliary reclay J at each motor control module (5), the equal correspondence of the normally closed contact of each auxiliary reclay J is serially connected between K switch and the zero line, the junction of the output termination K switch of Programmable Logic Controller (1) and auxiliary reclay J normally closed contact.
2, transformer cooling blower oil pump switch board as claimed in claim 1 is characterized in that: be connected to disconnecting link DZ between the end of incoming cables of two groups of three-phase supply.
CNU2008202244087U 2008-11-24 2008-11-24 Oil pump controlling cabinet of transformer cooling fan Expired - Fee Related CN201298176Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202244087U CN201298176Y (en) 2008-11-24 2008-11-24 Oil pump controlling cabinet of transformer cooling fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202244087U CN201298176Y (en) 2008-11-24 2008-11-24 Oil pump controlling cabinet of transformer cooling fan

Publications (1)

Publication Number Publication Date
CN201298176Y true CN201298176Y (en) 2009-08-26

Family

ID=41044159

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008202244087U Expired - Fee Related CN201298176Y (en) 2008-11-24 2008-11-24 Oil pump controlling cabinet of transformer cooling fan

Country Status (1)

Country Link
CN (1) CN201298176Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828983A (en) * 2012-09-28 2012-12-19 江苏省电力公司常州供电公司 Fan cooling control device and working method thereof
CN102840160A (en) * 2012-09-28 2012-12-26 江苏省电力公司常州供电公司 Air cooling control device and working method thereof
CN103089669A (en) * 2012-12-13 2013-05-08 苏州新区化工节能设备厂 Titanium fan and working method thereof
CN103603814A (en) * 2013-09-07 2014-02-26 国家电网公司 Main variable-frequency oil-submerged pump with intelligent frequency conversion device
CN106598117A (en) * 2016-11-30 2017-04-26 国网山东省电力公司青州市供电公司 Air cooling system of oil-immersed transformer
CN107591687A (en) * 2017-09-04 2018-01-16 安徽智瑞电气有限公司 A kind of low-voltage distribution system power distribution cabinet

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828983A (en) * 2012-09-28 2012-12-19 江苏省电力公司常州供电公司 Fan cooling control device and working method thereof
CN102840160A (en) * 2012-09-28 2012-12-26 江苏省电力公司常州供电公司 Air cooling control device and working method thereof
CN102840160B (en) * 2012-09-28 2014-12-24 江苏省电力公司常州供电公司 Air cooling control device and working method thereof
CN102828983B (en) * 2012-09-28 2016-01-13 江苏省电力公司常州供电公司 Blower fan cooling controller and method of work thereof
CN105402151A (en) * 2012-09-28 2016-03-16 江苏省电力公司常州供电公司 Air cooling control device
CN103089669A (en) * 2012-12-13 2013-05-08 苏州新区化工节能设备厂 Titanium fan and working method thereof
CN103089669B (en) * 2012-12-13 2015-09-09 苏州赛斯德工程设备有限公司 A kind of titanium blower fan and method of work
CN103603814A (en) * 2013-09-07 2014-02-26 国家电网公司 Main variable-frequency oil-submerged pump with intelligent frequency conversion device
CN106598117A (en) * 2016-11-30 2017-04-26 国网山东省电力公司青州市供电公司 Air cooling system of oil-immersed transformer
CN107591687A (en) * 2017-09-04 2018-01-16 安徽智瑞电气有限公司 A kind of low-voltage distribution system power distribution cabinet

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090826

Termination date: 20111124