CN205140729U - Series reactor - Google Patents
Series reactor Download PDFInfo
- Publication number
- CN205140729U CN205140729U CN201520972322.2U CN201520972322U CN205140729U CN 205140729 U CN205140729 U CN 205140729U CN 201520972322 U CN201520972322 U CN 201520972322U CN 205140729 U CN205140729 U CN 205140729U
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- CN
- China
- Prior art keywords
- resistance
- temperature
- coil
- copper bar
- amplifier element
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- 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
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Abstract
The utility model discloses a series reactor aims at providing the series reactor that can show the temperature variation condition, has solved the temperature can not effectively be learnt to people in the use size, and its technical scheme main points are including support, the copper bar that twines coil on the support, be connected with the coil electricity, be equipped with the temperature sensor who is used for detecting the copper bar temperature on the copper bar, being provided with the indicating units who is connected and shows temperature size with temperature sensor on the support, having reached the effect that people find out the height of temperature from the voltmeter, the iron core adopts the silicon steel sheet to punching shear through the high velocity ram machine, and it is little to have a burr, and the even lamination of rule is neat, guarantee the performance of the low temperature rise of reactor operation, low noise. The coil adopts insulated wire, and through the machine coiling, it is good to have the roughness, advantage that the appearance is pleasing to the eye. The reactor folder improves the holistic life -span through preventing corrosion treatment, the utility model is suitable for an electric power system accessory technical field.
Description
Technical field
The utility model relates to a kind of electric power system accessory, and more particularly, it relates to a kind of series reactor.
Background technology
Series reactor is in the power capacitor or Capacitor banks loop of series connection, and main rising suppresses high order harmonic component, reduces network voltage wave distortion, the surge current in restriction switching process.The normal series connection with compensation condenser of series reactor uses; what the inside was passed through is alternating current; the reactor of common reactance Rate 6-7%; his effect forms series resonance to stability harmonic wave (5,7,9,11,13 times); more than anti-3 subharmonic of reactance Rate 12%-14%() reactor; belong to the reactor of high inductance value; play the harm of harmonic inhabitation to capacitor and other electric equipments; can not burn, explode and the capacity of harmonic effects compensation by effective capacitor for voltage protection, make electricity consumption device security, work normally.
This product be divided into three-phase, single-phase two kinds, be iron core dry-type, iron core adopts high-quality cold-reduced silicon sheet, through silicon steel sheet through high velocity ram machine punching, has burr little, and regular uniform lamination is neat, guarantees that reactor runs the performance of low-temperature-rise, low noise.
In reactor assembling process, all folders are through anti-corrosion treatment, and crucial folder adopts non-magnetic material, and reactor winding and iron core firmly can form one, greatly reduce and run the temperature rise and noise that are, effectively improve the quality factor of reactor and reduce harmonic wave effects.
At present, in operation of power networks process, often there is the phenomenon that the pigtail splice of series reactor burns, i.e. external insulation, each phase outlet terminal is obviously burnt with extraction copper bar junction, so that lead terminal burns appearance and comes off, after reactor puts into operation, junction causes contact resistance bigger than normal due to vibrations, abnormal heating, thus make contact resistance improve further, vicious circle like this, temperature is made sharply to increase, people in use effectively can not know the size of temperature, thus easily cause series reactor hot operation, damage equipment, or the junction of high temperature easily irons the hand of maintenance personal in the process of maintenance.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model be to provide a kind of can the series reactor of displays temperature situation of change.
For achieving the above object, the utility model provides following technical scheme: a kind of series reactor, comprise support, the coil be wound on support, the copper bar that is electrically connected with coil, described copper bar is provided with the temperature sensor for detecting copper bar temperature, described support is provided with and is connected and the indicating member of displays temperature size with temperature sensor.
The utility model is set to further: described indicating member comprises, and is connected to temperature sensor, and converts variations in temperature the sampling unit of change in voltage to;
Connect sampling unit, and voltage signal is carried out the differential amplifier circuit that amplifies;
Connect differential amplifier circuit, and by voltmeter that voltage signal changing value shows.
The utility model is set to further: described temperature sensor is thermistor.
The utility model is set to further: described sampling unit comprises the first resistance, the second resistance, the 3rd resistance and the first potentiometer;
Be parallel to power supply and earth terminal after described first resistance and thermistor series connection, be parallel to power supply and earth terminal after described second resistance, the 3rd resistance, the first potentiometer series connection, described potentiometer is for regulating the node voltage of the second resistance and the 3rd resistance.
The utility model is set to further: described differential amplifier circuit comprises amplifier element, the 5th resistance and the second potentiometer;
The node of described first resistance and thermistor is connected the end of oppisite phase of amplifier element by the 4th resistance;
The node of the second resistance and the 3rd resistance is connected the in-phase end of amplifier element by the 6th resistance;
The end of oppisite phase of amplifier element also connects the adjustable side of the second potentiometer by the 5th resistance, the resistance two ends of second point position device connect between the output and ground of amplifier element, and the positive pole of voltmeter connects the output of amplifier element, minus earth.
The utility model is set to further: the output of described amplifier element is also connected with protected location, described in comprise unit and comprise,
In order to judge whether temperature exceedes the comparing section of threshold value,
Connect comparing section output and when temperature exceedes threshold value, coil carried out to the switch portion of tripping protection.
Compared with prior art, the beneficial effects of the utility model are: by set temperature transducer on copper bar, thus the temperature level situation of copper bar effectively can be detected, if something unexpected happened, breaking down in electrical network or shaking causes copper bar temperature to rise, therefore people find out the height temperature from voltmeter, thus can take take precautions against and safeguard treatment measures, thus improve the security performance of series reactor, can user be allowed intuitively to know temperature conditions, thus avoid scalding both hands.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the circuit diagram of indicating member;
Fig. 3 is the circuit diagram of protected location.
In figure 1, support; 2, coil; 3, copper bar; 4, temperature sensor; 5, indicating member; 51, sampling unit; R1, the first resistance; R2, the second resistance; R3, the 3rd resistance; VR1, the first potentiometer; 52, differential amplifier circuit; U1, amplifier element; R5, the 5th resistance; VR2, the second potentiometer; 53, voltmeter; 6, protected location; 61, comparing section; 62, switch portion; RT, thermistor.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model embodiment is described further.
As shown in Figure 1, a kind of series reactor, comprise support 1, be wound in the coil 2 on support 1, the copper bar 3 be electrically connected with coil 2, support 1 is used to support and allow coil 2 be wound around, coil 2 adopts copper wire winding, coil 2 also can become inductance in the present embodiment, carry out compensating electric power networks owing to needing multiple inductance coil 2 in electrical network, three inductance coils 2 groups are illustrated in lead-in wire figure, described copper bar 3 is provided with the temperature sensor 4 for detecting copper bar 3 temperature, temperature sensor 4 can adopt the Multiple Type on market to carry out detecting overall temperature conditions, under grid fault conditions, or loosening appears in junction, there is heat condition, can collecting temperature signal.Same temperature sensor 4 can also be fixed on the inside of coil 2, is preferably arranged on copper bar 3 in the present embodiment, near the place of copper bar 3, and therefore can the situation of limited detected temperatures.Described support 1 is provided with and is connected and the indicating member 5 of displays temperature size with temperature sensor 4.
Series reactor be tri-phase iron core formula, iron core adopts silicon steel sheet through high velocity ram machine punching, has burr little, and regular uniform lamination is neat, guarantees that reactor runs the performance of low-temperature-rise, low noise.Coil 2 adopts insulated conductor, by machine coiling, has evenness good, the advantage of good looking appearance.Reactor clamp, through anti-corrosion treatment, improves the overall life-span.
Temperature sensor 4 is thermistor RT.Adopt thermistor RT cheap, apply easy.
As shown in Figure 2, indicating member 5 comprises, and is connected to temperature sensor 4, and variations in temperature is converted to the sampling unit 51 of change in voltage; Sampling unit 51 comprises the first resistance R1, the second resistance R2, the 3rd resistance R3 and the first potentiometer VR1; Described first resistance R1 and thermistor RT is parallel to power supply and earth terminal after connecting, described second resistance R2, the 3rd resistance R3, the first potentiometer VR1 are parallel to power supply and earth terminal after connecting, and described potentiometer is for regulating the node voltage of the second resistance R2 and the 3rd resistance R3.
Differential amplifier circuit 52 connects sampling unit 51, and is amplified by voltage signal.Differential amplifier circuit 52 comprises amplifier element U1, the 5th resistance R5 and the second potentiometer VR2; The node of described first resistance R1 and thermistor RT is connected the end of oppisite phase of amplifier element U1 by the 4th resistance; The node of the second resistance R2 and the 3rd resistance R3 is connected the in-phase end of amplifier element U1 by the 6th resistance; The end of oppisite phase of amplifier element U1 also connects the adjustable side of the second potentiometer VR2 by the 5th resistance R5, the resistance two ends of second point position device connect between the output and ground of amplifier element U1, the positive pole of voltmeter 53 connects the output of amplifier element U1, minus earth.
Voltmeter 53 connects differential amplifier circuit 52, and is shown by voltage signal changing value.
The course of work is: when thermistor RT detects that temperature raises gradually, the form of electric resistance partial pressure is adopted to sample, the change of temperature is converted to faint change in voltage by sampling unit 51, differential amplify is being carried out by fortune side's element, voltage signal is amplified, thus D.C. voltmeter 53 can carry out the size of displays temperature, temperature rises, amplifier output voltage raises, the deflection angle of voltmeter 53 pointer increases, to indicate higher temperature value, otherwise then throw of pointer angle reduces, can adjust the sampling of sampling unit 51 by regulating the first potentiometer VR1, thus raising accuracy, and the gain of the second potentiometer VR2 with adjustment amplifier element U1.Amplifier element U1 can adopt LM358.
As shown in Figure 3; the output of amplifier element U1 is also connected with protected location 6; the described unit that comprises comprises, and in order to judge whether temperature exceedes the comparing section 61 of threshold value, connects comparing section 61 output and when temperature exceedes threshold value, coil 2 is carried out to the switch portion 62 of tripping protection.Power Vcc is by the collector electrode of connecting triode Q1 after the coil 2 of normally closed relay K, and the transmitting collection ground connection of triode Q1, the output of comparator A1 passes through the base stage of resistance R10 connecting triode Q1.The in-phase input end of comparator A1 connects the output of amplifier element U1, in order to receive analog voltage signal S.Thus can make relay K action when analog voltage signal S exceedes threshold value Vref.
Comparing section 61 is mainly comparator A1 and current-limiting resistance R8, R9, when temperature raises time, comparator is by comparing with reference voltage V ref, reference voltage V ref is threshold value, and when exceeding this magnitude of voltage, comparator exports high level, thus makes triode Q1 conducting, the coil 2 of normally closed relay obtains electric, the junction of coil 2 and coil 2 are disconnected, thus avoids electric current to continue to flow through inductance, thus make the tie point temperature of coil 2 sharply increase.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a series reactor, comprise support, the coil be wound on support, the copper bar that is electrically connected with coil, it is characterized in that: described copper bar is provided with the temperature sensor for detecting copper bar temperature, described support being provided with and being connected and the indicating member of displays temperature size with temperature sensor.
2. series reactor according to claim 1, is characterized in that: described indicating member comprises, and is connected to temperature sensor, and converts variations in temperature the sampling unit of change in voltage to;
Connect sampling unit, and voltage signal is carried out the differential amplifier circuit that amplifies;
Connect differential amplifier circuit, and by voltmeter that voltage signal changing value shows.
3. series reactor according to claim 2, is characterized in that: described temperature sensor is thermistor.
4. series reactor according to claim 3, is characterized in that: described sampling unit comprises the first resistance, the second resistance, the 3rd resistance and the first potentiometer;
Be parallel to power supply and earth terminal after described first resistance and thermistor series connection, be parallel to power supply and earth terminal after described second resistance, the 3rd resistance, the first potentiometer series connection, described potentiometer is for regulating the node voltage of the second resistance and the 3rd resistance.
5. series reactor according to claim 4, is characterized in that: described differential amplifier circuit comprises amplifier element, the 5th resistance and the second potentiometer;
The node of described first resistance and thermistor is connected the end of oppisite phase of amplifier element by the 4th resistance;
The node of the second resistance and the 3rd resistance is connected the in-phase end of amplifier element by the 6th resistance;
The end of oppisite phase of amplifier element also connects the adjustable side of the second potentiometer by the 5th resistance, the resistance two ends of second point position device connect between the output and ground of amplifier element, and the positive pole of voltmeter connects the output of amplifier element, minus earth.
6. series reactor according to claim 5, is characterized in that: the output of described amplifier element is also connected with protected location, described in comprise unit and comprise,
In order to judge whether temperature exceedes the comparing section of threshold value,
Connect comparing section output and when temperature exceedes threshold value, coil carried out to the switch portion of tripping protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972322.2U CN205140729U (en) | 2015-11-28 | 2015-11-28 | Series reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972322.2U CN205140729U (en) | 2015-11-28 | 2015-11-28 | Series reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205140729U true CN205140729U (en) | 2016-04-06 |
Family
ID=55626497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520972322.2U Expired - Fee Related CN205140729U (en) | 2015-11-28 | 2015-11-28 | Series reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205140729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593133A (en) * | 2018-05-22 | 2018-09-28 | 青岛海尔空调电子有限公司 | Detection circuit, the method, apparatus of the water temperature of handpiece Water Chilling Units in a kind of detection air-conditioning |
| CN109506802A (en) * | 2018-11-30 | 2019-03-22 | 北京科诺伟业科技股份有限公司 | A kind of reactor temperature sensing circuit |
-
2015
- 2015-11-28 CN CN201520972322.2U patent/CN205140729U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593133A (en) * | 2018-05-22 | 2018-09-28 | 青岛海尔空调电子有限公司 | Detection circuit, the method, apparatus of the water temperature of handpiece Water Chilling Units in a kind of detection air-conditioning |
| CN109506802A (en) * | 2018-11-30 | 2019-03-22 | 北京科诺伟业科技股份有限公司 | A kind of reactor temperature sensing circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20201128 |