CN206517040U - High speed large-size machine bearing overtemperature protection device - Google Patents
High speed large-size machine bearing overtemperature protection device Download PDFInfo
- Publication number
- CN206517040U CN206517040U CN201720123650.4U CN201720123650U CN206517040U CN 206517040 U CN206517040 U CN 206517040U CN 201720123650 U CN201720123650 U CN 201720123650U CN 206517040 U CN206517040 U CN 206517040U
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- China
- Prior art keywords
- normal open
- open switch
- relay
- high speed
- temperature control
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Abstract
The utility model discloses a kind of high speed large-size machine bearing overtemperature protection device, wherein, release one end connection live wire of the normally closed button of alarm, one end of the main contactor normal open switch of controlled motor on/off is connected with releasing one end of the other end of the normally closed button of alarm and the first normal open switch of relay respectively, the one end of the other end of main contactor normal open switch respectively with one end of temperature control normal open switch and the second normal open switch of relay is connected, the other end of first normal open switch of relay and the other end of temperature control normal open switch are connected with one end of relay, the other end of second normal open switch of relay and the other end of relay are connected with zero line, the normally closed switch of relay is connected in series on the power control loop of motor.The utility model disconnects in very short time by detecting motor bearings temperature in real time and present apparatus closing of circuit being triggered in its overtemperature and motor power and sends alarm signal, effectively protect motor, it is to avoid because of accident of the bearing overtemperature because of it.
Description
Technical field
The utility model is related to a kind of motor bearings overtemperature protection device, more particularly to a kind of high speed large-size machine bearing surpasses
Temperature protection device.
Background technology
High speed large-size machine is out of doors using more, because some use environment reasons may cause its bearing overtemperature and cause
Stator is damaged.Such as, because of rain-proof requirement when large-scale threephase asynchronous machine is used out of doors, it is common to use rain cover so that electricity
Picking up for machine bearing looks into quite inconvenient because of the stop such as rain cover, fan guard.If bearing is because oil starvation, defective mounting, bearing
The factors such as quality cause friction produce overheating problem, then bearing may be caused to damage in itself, and also result in rotor sweep thorax so as to
Stator is burnt, either maintenance or replacing can all bring larger cost price, can also delay miscellaneous equipment because of motor damage
Normal operation, and fault spread may be made, cause more economic losses.Because there is overtemperature to burning this in high-speed electric expreess locomotive bearing
Between the time it is very short, so being often difficult to solve this problem by labor management mode.
Bearing can occur the process of thermo-field thoery for some time before overtemperature damage, if it is possible to using bearing overtemperature but
Time timely automated stopping motor operation before not damaging also, then can solve the above problems, this base exactly of the present utility model
This thinking.
Utility model content
The purpose of this utility model is that provides a kind of high speed large-size machine bearing overtemperature to solve the above problems
Protection device.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of high speed large-size machine bearing overtemperature protection device, the high speed large-size machine passes through main contactor normal open switch
Its on/off is controlled, the high speed large-size machine bearing overtemperature protection device is normally opened including the normally closed button of releasing alarm, temperature control
Switch, relay and alarm, the first end that the releasing alerts normally closed button are connected with live wire, and described release alerts normally closed press
Second end of button respectively with the first end of the main contactor normal open switch and the first normal open switch of the relay first
End connection, the first end of the second end of the main contactor normal open switch and the temperature control normal open switch with the relay
The first end connection of second normal open switch, the second end of the first normal open switch of the relay and the temperature control normal open switch
Second end is connected with the first power input of the relay, the second end of the second normal open switch of the relay and institute
State the first power input connection of alarm, the second source input of the alarm and the second source of the relay
Input is connected with zero line, and the normally closed switch of the relay is connected in series in the power supply time of the high speed large-size machine
Lu Shang；The temperature control normal open switch is arranged on the high speed large-size machine bearing and can be in the high speed large-size machine bearing
Closed during overtemperature.
In said structure, releasing the normally closed button of alarm is used to be pressed by administrative staff after alarm and cut off other parts
Power supply, contact alarm；Temperature control normal open switch be used for detect bearing temperature and the closure switch in overtemperature so that connect relay and
Power source of alarm simultaneously forms it into self-locking, reaches and keeps alarm condition before administrative staff press and release the normally closed button of alarm
Purpose；Relay is used for the loop where it is made after switching on power by temperature control normal open switch and forms closure self-locking state and connect
Power source of alarm, while making high speed large-size machine out of service by way of its normally closed switch disconnects, realizes protection motor institute
There is part, and reach the purpose that alarm condition is kept before administrative staff press and release the normally closed button of alarm；Alarm
Device is used to send alarm signal, reminds administrative staff to note overhauling corresponding failure.
In order to improve protection reliability, the temperature control normal open switch includes the first temperature control normal open switch being connected in parallel with each other
With the second temperature control normal open switch, the first temperature control normal open switch and the second temperature control normal open switch are separately mounted to the height
Before and after the rotating shaft of fast large-size machine on the bearing of side.
The alarm is alarm lamp, or voice guard, or alarm indicator parallel with one another and
Voice guard.
Further, also it is connected in series rear fuse between the first end and the live wire for releasing the normally closed button of alarm.
The beneficial effects of the utility model are：
The utility model by detecting motor bearings temperature and present apparatus closing of circuit being triggered in its overtemperature in real time, in pole
Motor power is disconnected in short time and alarm signal is sent, it is therefore prevented that accident further expands and guides technical staff to carry out correlation
Pick up and repair, it is to avoid because of the security incident that motor damage is brought, saved the cost brought by motor damage and wasted, and be applied to
Bearing overtemperature failure caused by any reason.
Brief description of the drawings
Fig. 1 is the circuit diagram of high speed large-size machine bearing overtemperature protection device described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in figure 1, high speed large-size machine (not shown) described in the utility model is controlled by main contactor normal open switch C
Its on/off is made, high speed large-size machine bearing overtemperature protection device described in the utility model includes fuse RT, releases alarm
Normally closed button SB, the first temperature control normal open switch K1, the second temperature control normal open switch K2, relay KA and alarm lamp HD, insurance
Silk RT first end is connected with live wire L, and fuse RT the second end is connected with releasing the normally closed button SB of alarm first end, is released
Alert the first end and relay KA the first normal open switch of normally closed button SB the second end respectively with main contactor normal open switch C
KA-1 first end connection, main contactor normal open switch C the second end, the first temperature control normal open switch K1 first end, the second temperature
First end of the control normal open switch K2 first end with relay KA the second normal open switch KA-2 is connected, and the first of relay KA
Normal open switch KA-1 the second end, the first temperature control normal open switch K1 the second end, the second temperature control normal open switch K2 the second end it is equal
It is connected with relay KA the first power input, relay KA the second normal open switch KA-2 the second end and alarm lamp
HD the first power input connection, alarm lamp HD second source input and relay KA second source input
It is connected with zero line N, relay KA normally closed switch (not shown) is connected in series in the power supply time of high speed large-size machine
Lu Shang；The the first temperature control normal open switch K1 and the second temperature control normal open switch K2 being connected in parallel with each other are separately mounted to the large-scale electricity of high speed
(do not show mechanical structure in figure on the bearing of side before and after the rotating shaft of machine but should be readily appreciated that) and can be in the high speed large-scale motor shaft
Closed when holding overtemperature.
Explanation：The specific attachment structure of the power supply of above-mentioned relay KA normally closed switch control high speed large-size machine, according to
It is actually needed, can is the concrete structure for the on/off that can arbitrarily control high speed large-size machine, it is general as follows：Relay KA
Normally closed switch be connected in series in control high speed large-size machine main contactor power input, after relay KA is powered,
Its normally closed switch disconnects, and makes main contactor deenergization, so that the normal open switch of main contactor disconnects, makes high speed large-size machine
Power supply disconnect, it is out of service.
As shown in figure 1, in use, after main contactor normal open switch C is closed, high speed large-size machine is to bring into operation, this
When, release the normally closed button SB of alarm and be in closure state, the first temperature control normal open switch K1, the second temperature control normal open switch K2, relay
Device KA the first normal open switch KA-1 and relay KA the second normal open switch KA-2 are in off-state, relay KA and report
The alert equal access failures of indicator lamp HD, relay KA normally closed switch closure, high speed large-size machine is normally run, the present apparatus do not alarm but
It is in running order.
When high speed large-size machine bearing overtemperature for any reason (such as 150 degrees Celsius), the first temperature control normal open switch K1
Or/and the second temperature control normal open switch K2 closure, relay KA power on, relay KA the first normal open switch KA-1 and the
Two normal open switch KA-2 are closed, and relay KA normally closed switch disconnects, and relay KA the first normal open switch KA-1 closures are real
Existing self-locking, relay KA the second normal open switch KA-2 closures make alarm lamp HD power on realize alarm, remind pipe
Personnel placement maintenance corresponding failure is managed, relay KA normally closed switch disconnection makes main contactor deenergization and makes the large-scale electricity of high speed
Machine power failure is out of service, realizes defencive function.
After failture evacuation, it is equal that administrative staff press releasing alarm normally closed button SB, relay KA and alarm lamp HD
Deenergization, releases alarm, meanwhile, relay KA the first normal open switch KA-1 and relay KA the second normal open switch KA-2
Disconnect, relay KA normally closed switch closure, high speed large-size machine is normally run, the present apparatus is not alarmed but recovered work
Make state.
Above-described embodiment is preferred embodiment of the present utility model, is not the limit to technical solutions of the utility model
System, as long as the technical scheme that can be realized without creative work on the basis of above-described embodiment, is regarded as falling into
In the rights protection scope of the utility model patent.
Claims (4)
1. a kind of high speed large-size machine bearing overtemperature protection device, the high speed large-size machine passes through main contactor normal open switch control
Make its on/off, it is characterised in that：The high speed large-size machine bearing overtemperature protection device include releasing the normally closed button of alarm,
Temperature control normal open switch, relay and alarm, the first end that the releasing alerts normally closed button are connected with live wire, and described release is accused
Normally opened opened with the first of the first end of the main contactor normal open switch and the relay respectively at second end of alert normally closed button
The first end connection of pass, the first end of the second end of the main contactor normal open switch and the temperature control normal open switch with it is described
The first end connection of second normal open switch of relay, the second end of the first normal open switch of the relay and the temperature control are normal
Second end of switch is connected with the first power input of the relay, and the of the second normal open switch of the relay
Two ends are connected with the first power input of the alarm, the second source input of the alarm and the relay
Second source input is connected with zero line, and the normally closed switch of the relay is connected in series in the electricity of the high speed large-size machine
In the control loop of source；The temperature control normal open switch is arranged on the high speed large-size machine bearing and can be large-scale in the high speed
Closed during motor bearings overtemperature.
2. high speed large-size machine bearing overtemperature protection device according to claim 1, it is characterised in that：The temperature control is normally opened
Switch includes the first temperature control normal open switch and the second temperature control normal open switch being connected in parallel with each other, the first temperature control normal open switch
It is separately mounted to the second temperature control normal open switch before and after the rotating shaft of the high speed large-size machine on the bearing of side.
3. high speed large-size machine bearing overtemperature protection device according to claim 1 or 2, it is characterised in that：The alarm
Device is alarm lamp.
4. high speed large-size machine bearing overtemperature protection device according to claim 1 or 2, it is characterised in that：It is described to release
Alert and rear fuse is also connected in series between the first end of normally closed button and the live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123650.4U CN206517040U (en) | 2017-02-10 | 2017-02-10 | High speed large-size machine bearing overtemperature protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123650.4U CN206517040U (en) | 2017-02-10 | 2017-02-10 | High speed large-size machine bearing overtemperature protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517040U true CN206517040U (en) | 2017-09-22 |
Family
ID=59866279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720123650.4U Active CN206517040U (en) | 2017-02-10 | 2017-02-10 | High speed large-size machine bearing overtemperature protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517040U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863854A (en) * | 2017-12-19 | 2018-03-30 | 泰豪科技股份有限公司 | A kind of motor winding temperature protects control circuit |
| CN110639631A (en) * | 2019-10-18 | 2020-01-03 | 迈普通信技术股份有限公司 | Temperature and humidity test box high temperature protection device |
-
2017
- 2017-02-10 CN CN201720123650.4U patent/CN206517040U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863854A (en) * | 2017-12-19 | 2018-03-30 | 泰豪科技股份有限公司 | A kind of motor winding temperature protects control circuit |
| CN107863854B (en) * | 2017-12-19 | 2024-01-30 | 泰豪科技股份有限公司 | Motor winding temperature protection control circuit |
| CN110639631A (en) * | 2019-10-18 | 2020-01-03 | 迈普通信技术股份有限公司 | Temperature and humidity test box high temperature protection device |
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