CN203502133U - Rectifying element temperature measuring apparatus - Google Patents
Rectifying element temperature measuring apparatus Download PDFInfo
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- CN203502133U CN203502133U CN201320422245.4U CN201320422245U CN203502133U CN 203502133 U CN203502133 U CN 203502133U CN 201320422245 U CN201320422245 U CN 201320422245U CN 203502133 U CN203502133 U CN 203502133U
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Abstract
The utility model provides a rectifying element temperature measuring apparatus, comprising temperature induction units, an analog quantity power board and a controller. Each parallel branch where a rectifying element is in is in parallel connection with a temperature induction unit; the temperature induction unit can convert the temperature of the rectifying element into an electric signal and outputs the electric signal to an electric signal input channel of the analog quantity power board; the controller outputs a channel selection instruction to the analog quantity power board, receives the electric signal outputted by the channel corresponding with the channel selection instruction outputted by the analog quantity power board and converts the electric signal into a temperature value. Compared with a present infrared temperature measurement scheme, the rectifying element temperature measuring apparatus employs the temperature induction units in series connection with the branches of the rectifying elements to obtain the temperatures of the rectifying elements, keeping unchanged distances between the temperature induction units and the rectifying elements, effectively reducing the measuring deviation caused by the uncontrollable distances between thermodetectors and the rectifying elements and thereby raising the temperature measuring precision of the rectifying elements.
Description
Technical field
The utility model relates to temperature measurement technology field, more particularly, relates to a kind of rectifier cell temperature measuring equipment.
Background technology
Along with the fast development of rectification industry, user is more and more higher to the requirement of the stability of commutation system and reliability thereof.High-power rectifying equipment is because the electric current that rectifying bridge arm passes through is very large, and the rated current of single rectifier cell can not meet the demands, and therefore, conventionally needs a plurality of rectifier cell parallel runnings to reach the object of sharing electric current.Due to can be because there is mutual inductance between poor, the branch road of service time difference, forward drop and in reasons such as DC bus diverse locations, the electric current that each road is shared there are differences, and affects the current-sharing effect of commutation system between each parallel branch.Same rectifying installation adopts the rectifier cell of same model specification, and when current-sharing effect is bad, first the heavy rectifier cell of burden may damage, thereby increases the weight of the burden of other rectifier cell, makes other rectifier cell excess current cause chain damage.
The current-sharing effect of commutation system can be weighed by the temperature of test rectifier cell.The general temperature that adopts infrared thermometer to test one by one rectifier cell in prior art, the temperature by each rectifier cell of relatively recording, judges the current-sharing effect of commutation system, to maintain easily personnel, in time commutation system is carried out to current-sharing adjustment.
While measuring the temperature of rectifier cell due to infrared thermometer, directly do not contact with rectifier cell, but maintain a certain distance with rectifier cell, by rectifier cell transmitting infrared ray, obtain the temperature of rectifier cell.Because measuring distance when infrared thermometer is measured rectifier cell is uncontrollable at every turn, make each measurement result have certain deviation, therefore measuring accuracy is low.
Utility model content
In view of this, the utility model provides a kind of rectifier cell temperature measuring equipment, to improve the precision that rectifier cell is measured.
A rectifier cell temperature measuring equipment, is applied to the commutation system that comprises a plurality of rectifier cell parallel connections, comprising:
Be connected in the parallel branch at rectifier cell place, the temperature inversion of described rectifier cell become to the temperature induction unit of electric signal;
Be provided with a plurality of electric signal input channels, described in each, electric signal input channel is all connected with a described temperature induction unit, according to the channel selecting instruction that receives, control the analog quantity distribution plate of the corresponding passage output electrical signals of the channel value that comprises with described channel selecting instruction;
Be connected with described analog quantity distribution plate, to described analog quantity distribution plate, export described channel selecting instruction, receive the described electric signal of described analog quantity distribution plate output, and described electric signal is changed into the controller of temperature value.
Preferably, described temperature induction unit comprises:
The temperature inversion of described rectifier cell is become to the temperature sensor of resistance signal;
Be connected with a described temperature sensor, the described resistance signal obtaining changed into the temperature transmitter of voltage signal or current signal.
Preferably, described analog quantity distribution plate is integrated with: multi-analog input circuit, a plurality of magnifier, a plurality of on-off circuit, analogue quantity output circuit and switching value are selected circuit;
Described multi-analog input circuit is provided with a plurality of input ends and a plurality of output terminal, and described in each, input end is all connected with the signal output part of a described temperature induction unit;
Described in each, the input end of magnifier is all connected with an output terminal of described multi-analog input circuit;
Described in each, the input end of on-off circuit is all connected with the output terminal of a described magnifier;
Described switching value selects circuit to be provided with an instruction input end and a plurality of instruction output end, described instruction input end is connected with the instruction output end of described controller, described switching value selects each instruction output end of circuit to be all connected with the instruction input end of a described on-off circuit, described switching value selects circuit to receive the channel selecting instruction of described controller output, controls the corresponding on-off circuit output electrical signals of channel value comprising with described channel selecting instruction;
Described analogue quantity output circuit is provided with a plurality of signal input parts, a signal output part, described in each, signal input part is all connected with the output terminal of a described on-off circuit, the signal output part of described analogue quantity output circuit is connected with the signal input part of described controller, and described analogue quantity output circuit flows to described controller by the described electric signal of described on-off circuit output.
Preferably, described switching value selects circuit to comprise: switch quantity acquisition circuit and multi-channel analog switch circuit:
The input end of described switch quantity acquisition circuit is connected with the instruction output end of described controller, the output terminal of described switch quantity acquisition circuit is connected with the input end of described multi-channel analog switch circuit, described switch quantity acquisition circuit receives the described channel selecting instruction of described controller output, and described channel selecting instruction is flowed to described multi-channel analog switch circuit;
Described multi-channel analog switch circuit is provided with an input end and a plurality of output terminal, described in each, output terminal is all connected with a described on-off circuit, described multi-channel analog switch circuit, according to described channel selecting instruction, is controlled the corresponding described on-off circuit of channel value comprising with described channel selecting instruction and is exported described electric signal.
Preferably, described switching value selects circuit also to comprise:
Be arranged on the photoelectric coupling circuit between described switch quantity acquisition circuit and described multi-channel analog switch circuit.
Preferably, described controller is integrated with: analog to digital conversion circuit and central processing unit;
The input end of analog-digital conversion circuit as described connects the output terminal of described analog quantity distribution plate, the output terminal of analog-digital conversion circuit as described connects described central processing unit, analog-digital conversion circuit as described distributes the described electric signal of version output to be converted to digital electric signal described analog quantity, and offers described central processing unit;
Described central processing unit changes into corresponding temperature value by described digital electric signal.
Preferably, on described central processing unit, be provided with communication interface, described central processing unit is exported described temperature value by described communication interface.
Preferably, also comprise:
The display being connected with the communication interface of described controller.
Preferably, described controller is programmable logic controller (PLC).
Preferably, described programmable logic controller (PLC) is provided with: binary-coded decimal output interface.
From above-mentioned technical scheme, can find out, the utility model provides a kind of rectifier cell temperature measuring equipment, comprise: temperature induction unit, analog quantity distribution plate and controller, the temperature induction unit of all connecting in the parallel branch at each rectifier cell place, temperature induction unit can become electric signal by the temperature inversion of rectifier cell, export an electric signal input channel of analog quantity distribution plate to, controller is to analog quantity distribution plate output channel selection instruction, receive the electric signal of the passage output corresponding with described channel selecting instruction of analog quantity distribution plate output, and described electric signal is changed into temperature value.Compare with existing infrared measurement of temperature scheme, the utility model adopts the temperature induction unit being series on the branch road of rectifier cell place to obtain the temperature of rectifier cell, distance between temperature induction unit and rectifier cell is immobilized, effectively reduce due to the uncontrollable measured deviation causing of the distance between temperature measurer and rectifier cell, therefore, improved the temperature measurement accuracy of rectifier cell.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of rectifier cell temperature measuring equipment of the utility model embodiment;
Fig. 2 is the structural representation of the disclosed another kind of rectifier cell temperature measuring equipment of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model embodiment discloses a kind of structural representation of rectifier cell temperature measuring equipment, is applied to the commutation system that comprises a plurality of rectifier cell parallel connections, comprising: temperature induction unit 11, analog quantity distribution plate 12 and controller 13;
Wherein, in a plurality of rectifier cells that are connected in parallel that comprise in commutation system, each rectifier cell is all connected in series and (temperature induction unit 11 is only shown in figure with a temperature induction unit 11, other all not shown), the distance between temperature induction unit 11 and rectifier cell immobilizes.
Analog quantity distribution plate 12 is provided with a plurality of electric signal input channels, and each electric signal input channel is all connected with a temperature induction unit 11.
Analog quantity distribution plate 12 is according to the channel selecting instruction receiving, and controls the passage output electrical signals corresponding with channel value in described channel selecting instruction.
Be understandable that, the number of the electric signal input channel that analog quantity distribution plate 12 arranges is unfixing, when the number of the electric signal input channel arranging when analog quantity distribution plate 12 is not less than total number of the rectifier cell being connected in parallel, an analog quantity distribution plate 12 can satisfy the demands.When the number of the electric signal input channel arranging when analog quantity distribution plate 12 is less than total number of the rectifier cell being connected in parallel, need satisfy the demands with a plurality of analog quantity distribution plates 12.The number of the electric signal input channel that analog quantity distribution plate 12 arranges, determines according to actual needs, and the utility model does not limit at this.
Preferably, controller 13 can be programmable logic controller (PLC) (Programmable Logic Controller, PLC).
In summary it can be seen, the rectifier cell temperature measuring equipment that the utility model provides, compare with existing infrared measurement of temperature scheme, employing is series at the temperature that temperature induction unit 11 on the branch road of rectifier cell place is obtained rectifier cell, distance between temperature induction unit 11 and rectifier cell is immobilized, effectively reduce due to the uncontrollable measured deviation causing of the distance between temperature measurer and rectifier cell, therefore, improved the temperature measurement accuracy of rectifier cell.Meanwhile, the rectifier cell temperature measuring equipment that the utility model provides, without staff and rectifier cell close contact, to analog quantity distribution plate 12 output channel selection instructions, can obtain the temperature of each rectifier cell by controller 13.Therefore, compare with existing infrared measurement of temperature scheme, the utility model has ensured personal safety, has reduced the waste of manpower.The utility model obtains the required time of each rectifier cell temperature, it is mainly controller 13 sendaisle selection instructions and the time that receives electric signal, with respect to staff in prior art, need to measure one by one rectifier cell for the required time, the utility model has also been saved the time of the temperature value that obtains all rectifier cells.
For further optimizing the technical scheme in embodiment illustrated in fig. 1, as shown in Figure 2, the utility model embodiment discloses the structural representation of another kind of rectifier cell temperature measuring equipment,
Wherein, temperature sensor 111 can adopt PT100 temperature sensor.
Can find out, rectifier cell, temperature sensor 111 and temperature transmitter 112 are one to one, and each rectifier cell is connected with a temperature sensor 111, and each temperature sensor 111 is connected with a temperature transmitter 112.
For further optimizing technique scheme, analog quantity distribution plate 12 is integrated with: shown in multi-analog input circuit 121, a plurality of magnifier 122(figure one), shown in a plurality of on-off circuit 123(figure one), analogue quantity output circuit 124 and switching value select circuit 125;
The input end of each magnifier 122 is all connected with an output terminal of multi-analog input circuit 121, the output terminal of each magnifier 122 is all connected with the input end of an on-off circuit 123, magnifier 122 obtains the electric signal of multi-analog input circuit 121 outputs, and described electric signal is amplified and flows to on-off circuit 123.
Switching value selects circuit 125 to be provided with an instruction input end and a plurality of instruction output end, described instruction input end is connected with the instruction output end of controller 13, switching value selects each instruction output end of circuit 125 to be all connected (on-off circuit 123 is only shown in figure) with the instruction input end of an on-off circuit 123, switching value selects circuit 125 to receive the channel selecting instruction of controller 13 outputs, controls corresponding on-off circuit 123 output electrical signals of channel value that comprise with described channel selecting instruction.
Analogue quantity output circuit 124 is provided with a plurality of signal input parts, a signal output part, each signal input part is all connected with the output terminal of an on-off circuit 123, the signal output part of analogue quantity output circuit 124 is connected with the signal input part of controller 13, and analogue quantity output circuit 124 flows to controller 13 by the electric signal of on-off circuit 123 outputs.
For further optimizing technique scheme, switching value selects circuit 125 specifically can comprise: switch quantity acquisition circuit 1251 and multi-channel analog switch circuit 1252.
The input end of switch quantity acquisition circuit 1251 is connected with the instruction output end of controller 13, the output terminal of switch quantity acquisition circuit 1251 is connected with the input end of multi-channel analog switch circuit 1252, switch quantity acquisition circuit 1251 receives the channel selecting instruction of controller 13 outputs, and this channel selecting instruction is flowed to multi-channel analog switch circuit 1252.
Multi-channel analog switch circuit 1252 is provided with an input end and a plurality of output terminal, each output terminal is all connected with an on-off circuit 123, multi-channel analog switch circuit 1252, according to channel selecting instruction, is controlled on-off circuit 123 output electrical signals corresponding to channel value that comprise with channel selecting instruction.
For further optimizing technique scheme, switching value selects circuit 125 also to comprise: be arranged on the photoelectric coupling circuit 1253 between switch quantity acquisition circuit 1251 and multi-channel analog switch circuit 1252, photoelectric coupling circuit 1253 can be isolated other electric signal except channel value and multi-channel analog switch circuit 1252.
For further optimizing technique scheme, controller 13 is integrated with: analog to digital conversion circuit 131 and central processing unit 132(Central Processing Unit, CPU).
The input end connecting analog amount of analog to digital conversion circuit 131 is distributed the output terminal (output terminal of concrete connecting analog amount output circuit 124) of version 12, the output terminal of analog to digital conversion circuit 131 connects central processing unit 132, analog to digital conversion circuit 131 distributes the electric signal of version 12 outputs to be converted to digital signal analog quantity, and offering central processing unit 132, central processing unit 132 changes into corresponding temperature value by described digital signal.
Be understandable that, central processing unit 132 is core processors of controller 13, and channel selecting instruction is specifically produced by central processing unit 132.
Wherein, be provided with communication interface (not shown) on central processing unit 132, central processing unit 132 is by communication interface output temperature value.
For further optimizing technique scheme, the rectifier cell temperature measuring equipment that the utility model provides also comprises: be connected with communication interface, for the display of displays temperature value.
It will be understood by those skilled in the art that, when controller 13 is programmable logic controller (PLC), that programmable logic controller (PLC) is exported is binary-coded decimal (Binary-Coded Decimal, also claim BCD or binary-decimal code) the channel selecting instruction of form, therefore, on programmable logic controller (PLC), be also provided with binary-coded decimal output interface.
In summary it can be seen, the rectifier cell temperature measuring equipment that the utility model provides, compare with existing infrared measurement of temperature scheme, employing is series at the temperature that temperature induction unit 11 on the branch road of rectifier cell place is obtained rectifier cell, distance between temperature induction unit 11 and rectifier cell is immobilized, effectively reduce due to the uncontrollable measured deviation causing of the distance between temperature measurer and rectifier cell, therefore, improved the temperature measurement accuracy of rectifier cell.Meanwhile, the rectifier cell temperature measuring equipment that the utility model provides, without staff and rectifier cell close contact, to analog quantity distribution plate 12 output channel selection instructions, can obtain the temperature of each rectifier cell by controller 13.Therefore, compare with existing infrared measurement of temperature scheme, the utility model has not only ensured personal safety, has reduced the waste of manpower, has also saved the time of the temperature value that obtains all rectifier cells.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a rectifier cell temperature measuring equipment, is applied to the commutation system that comprises a plurality of rectifier cell parallel connections, it is characterized in that, comprising:
Be connected in the parallel branch at rectifier cell place, the temperature inversion of described rectifier cell become to the temperature induction unit of electric signal;
Be provided with a plurality of electric signal input channels, described in each, electric signal input channel is all connected with a described temperature induction unit, according to the channel selecting instruction that receives, control the analog quantity distribution plate of the corresponding passage output electrical signals of the channel value that comprises with described channel selecting instruction;
Be connected with described analog quantity distribution plate, to described analog quantity distribution plate, export described channel selecting instruction, receive the described electric signal of described analog quantity distribution plate output, and described electric signal is changed into the controller of temperature value;
Wherein, described analog quantity distribution plate is integrated with: multi-analog input circuit, a plurality of magnifier, a plurality of on-off circuit, analogue quantity output circuit and switching value are selected circuit;
Described multi-analog input circuit is provided with a plurality of input ends and a plurality of output terminal, and described in each, input end is all connected with the signal output part of a described temperature induction unit;
Described in each, the input end of magnifier is all connected with an output terminal of described multi-analog input circuit;
Described in each, the input end of on-off circuit is all connected with the output terminal of a described magnifier;
Described switching value selects circuit to be provided with an instruction input end and a plurality of instruction output end, described instruction input end is connected with the instruction output end of described controller, described switching value selects each instruction output end of circuit to be all connected with the instruction input end of a described on-off circuit, described switching value selects circuit to receive the channel selecting instruction of described controller output, controls the corresponding on-off circuit output electrical signals of channel value comprising with described channel selecting instruction;
Described analogue quantity output circuit is provided with a plurality of signal input parts, a signal output part, described in each, signal input part is all connected with the output terminal of a described on-off circuit, the signal output part of described analogue quantity output circuit is connected with the signal input part of described controller, and described analogue quantity output circuit flows to described controller by the described electric signal of described on-off circuit output.
2. rectifier cell temperature measuring equipment according to claim 1, is characterized in that, described temperature induction unit comprises:
The temperature inversion of described rectifier cell is become to the temperature sensor of resistance signal;
Be connected with a described temperature sensor, the described resistance signal obtaining changed into the temperature transmitter of voltage signal or current signal.
3. rectifier cell temperature measuring equipment according to claim 1, is characterized in that, described switching value selects circuit to comprise: switch quantity acquisition circuit and multi-channel analog switch circuit:
The input end of described switch quantity acquisition circuit is connected with the instruction output end of described controller, the output terminal of described switch quantity acquisition circuit is connected with the input end of described multi-channel analog switch circuit, described switch quantity acquisition circuit receives the described channel selecting instruction of described controller output, and described channel selecting instruction is flowed to described multi-channel analog switch circuit;
Described multi-channel analog switch circuit is provided with an input end and a plurality of output terminal, described in each, output terminal is all connected with a described on-off circuit, described multi-channel analog switch circuit, according to described channel selecting instruction, is controlled the corresponding described on-off circuit of channel value comprising with described channel selecting instruction and is exported described electric signal.
4. rectifier cell temperature measuring equipment according to claim 3, is characterized in that, described switching value selects circuit also to comprise:
Be arranged on the photoelectric coupling circuit between described switch quantity acquisition circuit and described multi-channel analog switch circuit.
5. according to the rectifier cell temperature measuring equipment described in claim 1-4 any one, it is characterized in that, described controller is integrated with: analog to digital conversion circuit and central processing unit;
The input end of analog-digital conversion circuit as described connects the output terminal of described analog quantity distribution plate, the output terminal of analog-digital conversion circuit as described connects described central processing unit, analog-digital conversion circuit as described distributes the described electric signal of version output to be converted to digital electric signal described analog quantity, and offers described central processing unit;
Described central processing unit changes into corresponding temperature value by described digital electric signal.
6. rectifier cell temperature measuring equipment according to claim 5, is characterized in that, on described central processing unit, is provided with communication interface, and described central processing unit is exported described temperature value by described communication interface.
7. rectifier cell temperature measuring equipment according to claim 6, is characterized in that, also comprises:
The display being connected with the communication interface of described controller.
8. rectifier cell temperature measuring equipment according to claim 5, is characterized in that, described controller is programmable logic controller (PLC).
9. rectifier cell temperature measuring equipment according to claim 8, is characterized in that, described programmable logic controller (PLC) is provided with: binary-coded decimal output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422245.4U CN203502133U (en) | 2013-07-16 | 2013-07-16 | Rectifying element temperature measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422245.4U CN203502133U (en) | 2013-07-16 | 2013-07-16 | Rectifying element temperature measuring apparatus |
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| Publication Number | Publication Date |
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| CN203502133U true CN203502133U (en) | 2014-03-26 |
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| CN201320422245.4U Expired - Fee Related CN203502133U (en) | 2013-07-16 | 2013-07-16 | Rectifying element temperature measuring apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503513A (en) * | 2014-12-11 | 2015-04-08 | 无锡市锡容电力电器有限公司 | Intelligent temperature control heating system for heating plate |
| CN112526382A (en) * | 2020-11-18 | 2021-03-19 | 上海置信电气非晶有限公司 | Testing device for rectifying module of pole-mounted circuit breaker |
-
2013
- 2013-07-16 CN CN201320422245.4U patent/CN203502133U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503513A (en) * | 2014-12-11 | 2015-04-08 | 无锡市锡容电力电器有限公司 | Intelligent temperature control heating system for heating plate |
| CN112526382A (en) * | 2020-11-18 | 2021-03-19 | 上海置信电气非晶有限公司 | Testing device for rectifying module of pole-mounted circuit breaker |
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