CN104422835A - Multifunctional tester for electrical performance of electrical heating element - Google Patents
Multifunctional tester for electrical performance of electrical heating element Download PDFInfo
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- CN104422835A CN104422835A CN201310405654.8A CN201310405654A CN104422835A CN 104422835 A CN104422835 A CN 104422835A CN 201310405654 A CN201310405654 A CN 201310405654A CN 104422835 A CN104422835 A CN 104422835A
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Abstract
The invention discloses a multifunctional tester for electrical performance of an electrical heating element, belongs to the technical field of power electronics, and aims to solve the problem that the existing multi-functional tester has small power and cannot meet the requirement on testing of the electrical performance of the electrical heating element. The multifunctional tester for the electrical performance of the electrical heating element comprises seven parts of a leakage current test display, a small-current meter display, a voltmeter, a temperature controller, a voltage adjusting part, a contactor and a switch operation interface. The tester is mainly used for thermal state leakage current testing, rated power testing, overload testing and overheating testing of the electrical heating element of a metal shell at rated power and specified temperature, and can be widely used for manufacturing enterprises for producing the electrical heating elements.
Description
Technical field
The invention belongs to electric and electronic technical field, specifically, particularly relate to a kind of heating electric property multifunctional tester.
Background technology
Because the leakage current tester power that market is sold is all smaller, general between 0.5KVA to 1KVA, real power, electric current and hot leakage current etc. the electric parameter of heating all can not carry out optimum detection, more can not detect the electric parameter of heating under destructive test, enterprise practical need of production can not be met.
Summary of the invention
The invention discloses a kind of heating electric property multifunctional tester, smaller for solving existing multifunctional tester power, the problem of heating electric performance test can not be met.
The present invention is achieved by the following technical solutions:
Heating electric property multifunctional tester, comprises leakage current testing display, small area analysis instrument display, voltage table, temperature controller, pressure regulation part, contactor and seven, switching manipulation interface part;
The leakage current numerical value that described leakage current testing display is used on display heating simulation shell; Input end and the heating of leakage current testing display are simulated shell and are connected, and show after the leakage current signal of being simulated by heating on shell processes;
Described small area analysis instrument display, is used to the power, voltage, electric current, the frequency that show the heating when the operating voltage of electric heating element both ends is at 0-250V; Input end and the heating of small area analysis instrument display are simulated shell one end and are connected, and earth terminal binding post is connected with the other end of heating shell and forms loop;
Described voltage table, is used to the magnitude of voltage showing the two ends of heating when the operating voltage of electric heating element both ends is at 0-420V; Two test pencils of voltage table are connected in parallel on electric heating element both ends on the one hand, are also connected with pressure regulation part and voltage change-over switch by A.C. contactor on the other hand;
Described temperature controller, is used to detect the temperature level needing test solution; Temperature controller input end is provided with inductive probe; Temperature controller leaks switch by A.C. contactor and temperature control and connects;
Described pressure regulation part, is made up of voltage adjuster, needs the voltage range of work when AC0-250V, is regulated by a pressure regulator; When needs overvoltage test, the range of needs, when AC0-420V, is connected by two pressure regulators and show that AC0-420V exchanges adjustable voltage by voltage change-over switch and A.C. contactor;
Described switching manipulation interface comprises AC220V and leaks automatic switch, AC220V start button, power light, AC380V leakage automatic switch, AC380V start button, AC220V hand control switch, temperature control leakage switch, power control switch, voltage change-over switch, AC380V hand control switch, and described switch is all connected with A.C. contactor with button.
Described AC220V leaks automatic switch and AC380V leakage automatic switch all has controlled shelves and continuous shelves two grades;
It is control by leakage current testing display part that AC220V leaks the controlled shelves of automatic switch, and switch normally closed contact, AC220 start the series connection of button, leakage current testing display and ac contactor coil in circuit;
It is control by leakage current testing display part that AC380V leaks the controlled shelves of automatic switch, and switch normally closed contact, AC380V start the series connection of button, leakage current testing display and ac contactor coil in circuit;
AC220V leaks the continuous shelves of automatic switch and is connected with AC220V start button two ends.
AC380V leaks the continuous shelves of automatic switch and is connected with AC380V start button two ends.
The inductive probe of described temperature controller is thermopair.
Installation insurance silk in described leakage current testing display.
Compared with prior art, the invention has the beneficial effects as follows:
1. present invention accomplishes needs of production, the electric parameters such as the hot leakage current of the heating of metal shell, heating real power and electric current can be measured accurately.
2. the present invention can carry out the destructive test such as overload test, overheat test to electric heating products.
3. the testing inspection cycle of the present invention is short, and production efficiency is high.
Accompanying drawing explanation
Fig. 1 is external structure schematic diagram of the present invention;
Fig. 2 is internal component wiring diagram of the present invention.
In figure: 1, leakage current testing display; 2, small area analysis instrument display; 3, voltage table; 4, temperature controller; 5, pressure regulation part; 6, contactor; 7, switching manipulation interface.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
Heating electric property multifunctional tester, comprises leakage current testing display 1, small area analysis instrument display 2, voltage table 3, temperature controller 4, pressure regulation part 5, contactor 6 and 7 seven, switching manipulation interface part;
The leakage current numerical value that described leakage current testing display 1 is used on display heating simulation shell; Input end and the heating of leakage current testing display 1 are simulated shell and are connected, and show after the leakage current signal of being simulated by heating on shell processes;
Described small area analysis instrument display 2, is used to the power, voltage, electric current, the frequency that show the heating when the operating voltage of electric heating element both ends is at 0-250V; Input end and the heating of small area analysis instrument display 2 are simulated shell one end and are connected, and earth terminal binding post is connected with the other end of heating shell and forms loop;
Described voltage table 3, is used to the magnitude of voltage showing the two ends of heating when the operating voltage of electric heating element both ends is at 0-420V; Two test pencils of voltage table 3 are connected in parallel on electric heating element both ends on the one hand, are also connected with pressure regulation part 5 and voltage change-over switch by A.C. contactor 6 on the other hand;
Described temperature controller 4, is used to detect the temperature level needing test solution; Temperature controller 4 input end is provided with inductive probe, and inductive probe puts into the solution needing test; Temperature controller 4 leaks switch by A.C. contactor 6 with temperature control and connects;
Described pressure regulation part 5, is made up of voltage adjuster, needs the voltage range of work when AC0-250V, is regulated by a pressure regulator; When needs overvoltage test, the range of needs, when AC0-420V, is connected by two pressure regulators and show that AC0-420V exchanges adjustable voltage by voltage change-over switch and A.C. contactor;
Described switching manipulation interface 7 comprises AC220V and leaks automatic switch, AC220V start button, power light, AC380V leakage automatic switch, AC380V start button, AC220V hand control switch, temperature control leakage switch, power control switch, voltage change-over switch, AC380V hand control switch, and described switch and button are all connected with A.C. contactor 6.
Described AC220V leaks automatic switch and AC380V leakage automatic switch all has controlled shelves and continuous shelves two grades;
It is control by leakage current testing display 1 part that AC220V leaks the controlled shelves of automatic switch, and switch normally closed contact, AC220 start button, leakage current testing display 1 and A.C. contactor 6 coils connected in series in circuit;
It is control by leakage current testing display 1 part that AC380V leaks the controlled shelves of automatic switch, and switch normally closed contact, AC380V start button, leakage current testing display 1 and A.C. contactor 6 coils connected in series in circuit;
AC220V leaks the continuous shelves of automatic switch and is connected with AC220V start button two ends.
AC380V leaks the continuous shelves of automatic switch and is connected with AC380V start button two ends.
The inductive probe of described temperature controller 4 is thermopair.
Installation insurance silk in described leakage current testing display 1.
The present invention can detect dry combustion method heating and frying device heating, the measuring process of leakage current under dry combustion method heating rated voltage:
The first step: first AC output terminal is connected to electric heating element both ends;
Second step: voltage regulator handwheel scale is placed in heating to be needed on the position scale of test voltage;
Second step: the supply voltage switch on switching manipulation interface 7 is placed in AC220V;
3rd step: AC220V hand control switch is placed in run location;
4th step: switch is leaked in the temperature control on switching manipulation interface 7 and is placed in leak position;
5th step: switching manipulation interface 7 power source gauge tap is placed in run location;
6th step: press the 220V start button on switching manipulation interface 7;
After pressing start button, heating works under rated voltage, can be observed real power and the actual current value of heating under rated voltage by small area analysis instrument display 2 simultaneously.Along with the prolongation of time, there is numerical value to occur in leakage current test display 1, when heating surface temperature reaches the dry run state of experimental enviroment, see whether displayed value meets regulation requirement of dispatching from the factory.
The measuring process of leakage current under frying device heating rated voltage:
The first step: first AC output terminal is connected to electric heating element both ends;
Second step: heating is put into oil cauldron;
3rd step: the thermopair be connected with temperature controller 5 is put into oil cauldron, is used for detecting the temperature in oil cauldron;
4th step: the supply voltage switch on switching manipulation interface 7 is placed in AC220V;
5th step: AC220V hand control switch is placed in run location;
6th step: switch is leaked in the temperature control on switching manipulation interface 7 and is placed in temperature control position, set temperature controller bound temperature range simultaneously;
7th step: switching manipulation interface 7 power source gauge tap is placed in run location;
8th step: press the 220V start button on switching manipulation interface 7.
Observe and detect the hot leakage current values of frying device heating when oil temperature reaches setting, simultaneously can monitoring voltage and power and electric current.
According to the method for testing of above-mentioned heating, improve test voltage and the destructive test such as can carry out transshipping, overheated and carry out the performance of testing product.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (4)
1. a heating electric property multifunctional tester, comprises leakage current testing display (1), small area analysis instrument display (2), voltage table (3), temperature controller (4), pressure regulation part (5), contactor (6) and (7) seven, switching manipulation interface part;
Described leakage current testing display (1), is used to show the leakage current numerical value on heating simulation shell; Input end and the heating of leakage current testing display (1) are simulated shell and are connected, and show after the leakage current signal of being simulated by heating on shell processes;
Described small area analysis instrument display (2), is used to the power, voltage, electric current, the frequency that show the heating when the operating voltage of electric heating element both ends is at 0-250V; Input end and the heating of small area analysis instrument display (2) are simulated shell one end and are connected, and earth terminal binding post is connected with the other end of heating shell and forms loop;
Described voltage table (3), is used to the magnitude of voltage showing the two ends of heating when the operating voltage of electric heating element both ends is at 0-420V; Two test pencils of voltage table (3) are connected in parallel on electric heating element both ends on the one hand, are also connected with pressure regulation part (5) and voltage change-over switch by A.C. contactor (6) on the other hand;
Described temperature controller (4), is used to detect the temperature level needing test solution; Temperature controller (4) input end is provided with inductive probe; Temperature controller (4) leaks switch by A.C. contactor (6) and temperature control and connects;
Described pressure regulation part (5), is made up of voltage adjuster, needs the voltage range of work when AC0-250V, is regulated by a pressure regulator; When needs overvoltage test, the range of needs, when AC0-420V, is connected by two pressure regulators and show that AC0-420V exchanges adjustable voltage by voltage change-over switch with A.C. contactor (6);
Described switching manipulation interface (7) comprises AC220V and leaks automatic switch, AC220V start button, power light, AC380V leakage automatic switch, AC380V start button, AC220V hand control switch, temperature control leakage switch, power control switch, voltage change-over switch, AC380V hand control switch, and described switch and button are all connected with A.C. contactor (6).
2. heating electric property multifunctional tester according to claim 1, is characterized in that: described AC220V leaks automatic switch and AC380V leakage automatic switch all has controlled shelves and continuous shelves two grades;
It is control by leakage current testing display (1) part that AC220V leaks the controlled shelves of automatic switch, and switch normally closed contact, AC220 start button, leakage current testing display (1) and A.C. contactor (6) coils connected in series in circuit;
It is control by leakage current testing display (1) part that AC380V leaks the controlled shelves of automatic switch, and switch normally closed contact, AC380V start button, leakage current testing display (1) and A.C. contactor (6) coils connected in series in circuit;
AC220V leaks the continuous shelves of automatic switch and is connected with AC220V start button two ends.
AC380V leaks the continuous shelves of automatic switch and is connected with AC380V start button two ends.
3. heating electric property multifunctional tester according to claim 1, is characterized in that: the inductive probe of described temperature controller (4) is thermopair.
4. heating electric property multifunctional tester according to claim 1, is characterized in that: the interior installation insurance silk of described leakage current testing display (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310405654.8A CN104422835A (en) | 2013-09-06 | 2013-09-06 | Multifunctional tester for electrical performance of electrical heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310405654.8A CN104422835A (en) | 2013-09-06 | 2013-09-06 | Multifunctional tester for electrical performance of electrical heating element |
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| Publication Number | Publication Date |
|---|---|
| CN104422835A true CN104422835A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310405654.8A Pending CN104422835A (en) | 2013-09-06 | 2013-09-06 | Multifunctional tester for electrical performance of electrical heating element |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771724A (en) * | 2016-12-01 | 2017-05-31 | 长春中车轨道车辆有限公司 | CRH5A type EMUs electric heater testing stands |
| CN108828371A (en) * | 2018-07-23 | 2018-11-16 | 山东省计量科学研究院 | Household electric appliance safety is test bed |
| CN111665768A (en) * | 2020-06-30 | 2020-09-15 | 浙江星控信息技术有限公司 | Control box of six-channel thermotechnical instrument |
| CN117572133A (en) * | 2024-01-11 | 2024-02-20 | 深圳市鑫鸿佳科技有限公司 | Comprehensive tester for electric heating element and testing method thereof |
-
2013
- 2013-09-06 CN CN201310405654.8A patent/CN104422835A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771724A (en) * | 2016-12-01 | 2017-05-31 | 长春中车轨道车辆有限公司 | CRH5A type EMUs electric heater testing stands |
| CN106771724B (en) * | 2016-12-01 | 2019-03-15 | 长春中车轨道车辆有限公司 | CRH5A type EMU electric heater testing stand |
| CN108828371A (en) * | 2018-07-23 | 2018-11-16 | 山东省计量科学研究院 | Household electric appliance safety is test bed |
| CN111665768A (en) * | 2020-06-30 | 2020-09-15 | 浙江星控信息技术有限公司 | Control box of six-channel thermotechnical instrument |
| CN117572133A (en) * | 2024-01-11 | 2024-02-20 | 深圳市鑫鸿佳科技有限公司 | Comprehensive tester for electric heating element and testing method thereof |
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Application publication date: 20150318 |