CN206020510U - A kind of DC current sensor - Google Patents
A kind of DC current sensor Download PDFInfo
- Publication number
- CN206020510U CN206020510U CN201621042869.3U CN201621042869U CN206020510U CN 206020510 U CN206020510 U CN 206020510U CN 201621042869 U CN201621042869 U CN 201621042869U CN 206020510 U CN206020510 U CN 206020510U
- Authority
- CN
- China
- Prior art keywords
- direct current
- transmitting module
- diverter
- current diverter
- heat
- 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
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of DC current sensor, it is related to electronic-metering technology field.It includes the heat-resistant fireproof housing being made up of base and upper lid, the heat abstractor being made up of radiator and thermally conductive insulating layer, direct current diverter and transmitting module.Direct current diverter, heat abstractor are between heat-resistant fireproof housing.The two ends of direct current diverter are fixed on base both sides by overload bolt and nut, and the two ends of direct current diverter are bolted on upper lid also by potential pole.Transmitting module is fixed on the top of upper lid by module installation bolt.Temperature sensor is installed in the middle part of direct current diverter.Transmitting module is connected with external power source by DC12V power supply terminals.Transmitting module is connected with late-class circuit by pick-up lead-out terminal.This utility model is easy for installation, strong interference immunity, many using function, and high precision, Linearity are high, and energy long-term work is stable, practical, it is easy to promote the use of.
Description
Technical field
This utility model is related to electronic-metering technology field, more particularly to a kind of DC current sensor.
Background technology
In electronic-metering technology field, DC current sensor can be used for complete electronic set, communication system, Automated condtrol
Power supply carry out current limliting, backflow, the sampling flowed detection.When DC current sensor is to pass through resistance according to DC current,
Resistance two ends produce voltage principle and are made, and actually DC current sensor, as direct current diverter principle, is one
Low resistance, when there is DC current to pass through, produces secondary voltage drop and shows for secondary meter.Existing DC current sensor is present
The problems such as temperature rise, big temperature drift, and there is no the conversion of signal with the connection of late-class circuit, in addition user need to add when using
Fill heat abstractor or reduce overload amount to meet precision, and install other circuits additional and be connected with late-class circuit.
Therefore, those skilled in the art is devoted to developing a kind of new DC current sensor.
Utility model content
In view of the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of unidirectional current
Flow sensor, simple structure are reasonable in design, easy for installation, and strong interference immunity is more using function, and high precision, Linearity are high, energy
Long-term work is stable, practical, it is easy to promote the use of.
For achieving the above object, this utility model provides a kind of DC current sensor, including by base and upper lid group
Into heat-resistant fireproof housing, the heat abstractor being made up of radiator and thermally conductive insulating layer, direct current diverter and transmitting module.
Direct current diverter, heat abstractor are between heat-resistant fireproof housing.The two ends of direct current diverter are by overload bolt and spiral shell
Cap is fixed on base both sides, and the two ends of direct current diverter are bolted on upper lid also by potential pole.Described transmitting module
It is made up of internal circuit, temperature sensor, DC12V power supply terminals, pick-up lead-out terminal, module installation bolt.Transmitting module leads to
Cross the top that module installation bolt is fixed on lid.Temperature sensor is installed in the middle part of direct current diverter.Transmitting module passes through
DC12V power supply terminals are connected with external power source.Transmitting module is connected with late-class circuit by pick-up lead-out terminal.
Preferably, described direct current diverter is in a rectangular structure, with preset resistive value.Direct current diverter is by centre
Manganin and two ends pyrite or red copper be welded, current potential pole bolt, overload bolt, nut are separately mounted to two ends.
Preferably, described radiator, thermally conductive insulating layer are located at direct current diverter in heat-resistant fireproof housing
Lower section.Radiator is close to the setting of direct current diverter by thermally conductive insulating layer, direct current diverter can be carried out in overcurrent
Fully radiate, reduce the temperature rise of direct current diverter, improve the precision of direct current diverter.
Preferably, the windowing for strengthening heat sinking function is provided with described base, transmitting module, coordinate heat abstractor
Direct current diverter is radiated.
Preferably, described transmitting module is carried out to direct current diverter by the hole position on upper lid using temperature sensor
Measurement.Transmitting module is by the current potential pole bolt gathered data in the hole position on upper lid and direct current diverter.DC current is sensed
Device by transmitting module can collection signal by being converted linearly into standard voltage signal DC0-5V, DC1-5V, standard current signal
DC0-20mA、DC4-20mA.DC current sensor can be directly used as direct current diverter when transmitting module is not installed additional,
Its precision controlling is within 0.5% grade；After installing transmitting module additional, its precision controlling is within 0.2%.
The beneficial effects of the utility model are：DC current sensor is sustainable to work long hours, and low-power consumption, temperature rise are low,
Vibration resistance and impact resistance is improve, is reduced external magnetic field interference, it is ensured that the precision and stability of measurement, and is installed pick-up mould additional
The precision of measurement and the variation of output signal can be further improved after block, can replace traditional direct current diverter and Hall completely
Current sensor, completely isolated with input, output, power supply tripartite, strong interference immunity, high precision, Linearity are high, long-term work
Stable advantage.
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
Bright, to be fully understood from the purpose of this utility model, feature and effect.
Description of the drawings
Fig. 1 is decomposition texture schematic diagram of the present utility model；
Fig. 2 is assembly structure diagram of the present utility model.
Specific embodiment
With reference to Fig. 1-2, this specific embodiment is employed the following technical solutions：A kind of DC current sensor, including the bottom of by
The heat-resistant fireproof housing of seat 1 and the composition of upper lid 7, the heat abstractor being made up of radiator 2 and thermally conductive insulating layer 3, direct current shunting
Device 4 and transmitting module 8.Direct current diverter 4, heat abstractor is between heat-resistant fireproof housing.The two of direct current diverter 4
End is fixed on 1 both sides of base by overload bolt 6 and nut 13, and the two ends of direct current diverter 4 are fixed also by current potential pole bolt 5
On upper lid 7.Described transmitting module 8 is by internal circuit, temperature sensor 9, DC12V power supply terminals 10, pick-up lead-out terminal
11st, module installation bolt 12 is constituted.Transmitting module 8 is fixed on the top of lid 7 by module installation bolt 12.Temperature sensor
9 installed in the middle part of direct current diverter 4.Transmitting module 8 is shunted to direct current by the hole position on upper lid 7 using temperature sensor 9
Device 4 is measured.Transmitting module 8 is by 5 gathered data of current potential pole bolt in the hole position on upper lid 7 and direct current diverter 4.Become
Module 8 is sent to be connected with external power source by DC12V power supply terminals 10.Transmitting module 8 is by pick-up lead-out terminal 11 and rear class
Circuit is connected.
It should be noted that described direct current diverter 4 is in a rectangular structure, with preset resistive value.Direct current diverter 4
It is welded by the pyrite or red copper at middle manganin and two ends, current potential pole bolt 5, overload bolt 6, nut 13 are pacified respectively
Two ends are mounted in, direct current diverter 4 are connected in tested loop by overload bolt 6 and nut 13, current potential pole bolt 5 will be secondary
Signal output is to secondary meter or transmitting module 8.
It should be noted that described radiator 2, thermally conductive insulating layer 3 are located at direct current in heat-resistant fireproof housing
The lower section of diverter 4.Radiator 2 is close to direct current diverter 4 by thermally conductive insulating layer 3 and is arranged, can be to direct current in overcurrent
Diverter 4 is fully radiated, and reduces the temperature rise of direct current diverter 4, improves the precision of direct current diverter 4.
Additionally, the windowing 14 for strengthening heat sinking function is provided with described base 1, transmitting module 8, coordinate heat abstractor
Direct current diverter 4 is radiated.
Direct current diverter 4, heat abstractor between heat-resistant fireproof housing, is not only made whole by this specific embodiment
External sight is more clean and tidy, attractive in appearance, and improves vibration resistance and the impact resistance of sensor, reduces external magnetic field interference, protects
Certainty of measurement and stability are demonstrate,proved, user not only can be with Fast Installation and can arbitrarily to many DC current sensors when using
Carry out and, be used in series.
This specific embodiment transmitting module 8 is measured to the temperature rise of direct current diverter 4 using temperature sensor 9, profit
The overload of direct current diverter 4 is measured with the current potential pole bolt 5 on direct current diverter 4, according to overcurrent virtual value with
Measurement temperature value, overcurrent virtual value and temperature value of the transmitting module 8 by internal circuit to measurement, calculates direct current shunting
The temperature rise error of device 4, enters Mobile state adjustment under different temperature conditionss, mends to the output pressure drop mV signals of direct current diverter 4
Repay, the impact for overcoming temperature to cause DC current sensor, so as to further improve the precision of DC current sensor；Pass through
DC12V power supply terminals 10 on transmitting module 8, provide DC12V external power sources to transmitting module 8, for 8 normal work of transmitting module
Make；Transmitting module 8 connect will collection signal by being converted linearly into standard voltage signal DC0-5V, DC1-5V, standard current signal
DC0-20mA, DC4-20mA, realize the Signal Matching with late-class circuit by pick-up lead-out terminal 11.
This specific embodiment can be used as direct current diverter when transmitting module 8 is not installed additional, and level accuracy exists
Within 0.5% grade, after installing transmitting module 8 additional, precision can be improved within 0.2% grade, not only exportable mV signals can be pressed
Standard signal DC1-5V, DC0-5V, DC4-20mA, DC0-20mA is converted linearly into, is entered for secondary meter or late-class circuit signal
Row coupling；This device has input, output, power supply tripartite completely isolated, and strong interference immunity, high precision, Linearity are high, work is steady
The low advantage of fixed, temperature rise, possesses wide market application foreground.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations according to design of the present utility model without the need for creative work.Therefore, all this technology necks
In domain, technical staff passes through logical analyses, reasoning or limited reality on the basis of existing technology according to design of the present utility model
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. a kind of DC current sensor, it is characterised in that：Including the heat-resistant fireproof shell being made up of base (1) and upper lid (7)
Body, the heat abstractor being made up of radiator (2) and thermally conductive insulating layer (3), direct current diverter (4) and transmitting module (8), direct current
, between heat-resistant fireproof housing, the two ends of direct current diverter (4) pass through overload bolt (6) for diverter (4), heat abstractor
And nut (13) is fixed on base (1) both sides, the two ends of direct current diverter (4) are fixed on upper lid also by current potential pole bolt (5)
(7), on, described transmitting module (8) is by internal circuit, temperature sensor (9), DC12V power supply terminals (10), pick-up outfan
Sub (11), module installation bolt (12) composition, transmitting module (8) are fixed on the upper of lid (7) by module installation bolt (12)
Portion, temperature sensor (9) installed in direct current diverter (4) middle part, transmitting module (8) by DC12V power supply terminals (10) with
External power source is connected, and transmitting module (8) is connected with late-class circuit by pick-up lead-out terminal (11).
2. a kind of DC current sensor as claimed in claim 1, it is characterised in that：Described direct current diverter (4) is in one
Rectangular structure, direct current diverter (4) are welded by the pyrite or red copper at middle manganin and two ends.
3. a kind of DC current sensor as claimed in claim 1, it is characterised in that：Described radiator (2), heat conductive insulating
Layer (3) is located at the lower section of direct current diverter (4) in heat-resistant fireproof housing, and radiator (2) passes through thermally conductive insulating layer (3)
It is close to direct current diverter (4) setting.
4. a kind of DC current sensor as claimed in claim 1, it is characterised in that：Described base (1), transmitting module
(8) windowing (14) for strengthening heat sinking function is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042869.3U CN206020510U (en) | 2016-08-31 | 2016-08-31 | A kind of DC current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042869.3U CN206020510U (en) | 2016-08-31 | 2016-08-31 | A kind of DC current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206020510U true CN206020510U (en) | 2017-03-15 |
Family
ID=58258994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621042869.3U Expired - Fee Related CN206020510U (en) | 2016-08-31 | 2016-08-31 | A kind of DC current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206020510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286258A (en) * | 2019-08-10 | 2019-09-27 | 蚌埠市正园电子科技有限公司 | A kind of potentiometric detection equipment current divider |
-
2016
- 2016-08-31 CN CN201621042869.3U patent/CN206020510U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286258A (en) * | 2019-08-10 | 2019-09-27 | 蚌埠市正园电子科技有限公司 | A kind of potentiometric detection equipment current divider |
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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: 20170315 Termination date: 20200831 |