CN110780161B - Insulation resistance and insulation withstand voltage measuring mechanism suitable for electromagnetic relay - Google Patents
Insulation resistance and insulation withstand voltage measuring mechanism suitable for electromagnetic relay Download PDFInfo
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- CN110780161B CN110780161B CN201910884197.2A CN201910884197A CN110780161B CN 110780161 B CN110780161 B CN 110780161B CN 201910884197 A CN201910884197 A CN 201910884197A CN 110780161 B CN110780161 B CN 110780161B
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- guide rail
- insulation resistance
- contact
- withstand voltage
- electromagnetic relay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The technical scheme includes that the insulation resistance and insulation withstand voltage measuring mechanism suitable for the electromagnetic relay comprises a left guide rail (2), a right guide rail (5) and a base plate frame (4), wherein the left guide rail (2) and the right guide rail (5) are respectively installed on the left side and the right side of the base plate frame (4) through screw bases, the base plate frame (4) comprises 14 contact assemblies, moving assemblies and rotating assemblies are respectively arranged on the left guide rail (2) and the right guide rail (5), and the moving assemblies on the left guide rail (2) and the right guide rail (5) are respectively meshed with corresponding rotating assemblies and driven by the rotating assemblies to act. The invention has the advantages of solving the problem of measuring the insulation resistance and the withstand voltage of the electromagnetic relay and realizing the rapid and accurate measurement of the insulation resistance and the withstand voltage of the electromagnetic relay.
Description
Technical Field
The invention belongs to the technical field of electrical parameter testing of electromagnetic relays, and particularly relates to an insulation resistance and insulation withstand voltage measuring mechanism of an electromagnetic relay.
Background
The working reliability of the electromagnetic relay directly determines the working quality and economic and technical indexes of the control system to a great extent. As a control element, in addition to the inherent contact relay characteristics, the insulation characteristics and the voltage resistance of the relay directly affect the operational reliability of the relay. Statistics show that the insulating and voltage-resisting properties of the relay which is failed, unstable in working state or deteriorated in control performance during working process are abnormal, and have a considerable proportion. Therefore, the insulation performance test and the voltage withstanding test of the relay are important links for controlling the working reliability of the relay.
The requirements of the insulation resistance test of the electromagnetic relay are as follows:
1. the insulation resistance measurement is to be carried out on a relay which is installed in the normal operating position.
2. The insulation resistance is the resistance between the disconnected conductive portions measured using a 500V megohm meter under specified environmental conditions.
3. The measurement sites of the insulation resistance were as follows:
a) between each winding of each coil;
b) the coil winding and other parts of the relay;
c) between each contact point;
d) between the charged part and the ground;
e) and measuring the insulation resistance of the relay coil at the position under the non-electric state. The coil is in a power-on state; the insulation resistance between the coil winding and the other components of the relay is not measured.
The requirements of the insulation resistance test of the electromagnetic relay are as follows
1. The withstand voltage test should be performed on a relay installed in a normal operating position.
2. The same applies to the voltage.
3. The relay is in the non-electricity state, the withstand voltage test is carried out on the part,
4. gradually increasing the test voltage to the standard specified value of the product for 1min, and avoiding breakdown and flashover.
5. The speed of the rise and fall of the test voltage should not be more than 500V/s.
According to the national standard requirement, the insulation resistance and voltage resistance testing process of an electromagnetic relay is very complicated, and the consumed time and labor are very huge, so that the invention designs the insulation resistance voltage resistance tester which has a simple and practical structure, low cost and simple operation, greatly shortens the testing time and the consumption of labor on the premise of completing the testing requirement, and can measure different types of relays, thereby realizing the function of one machine with multiple purposes.
Disclosure of Invention
The technical scheme of the invention for realizing the purpose is that the insulation resistance and insulation withstand voltage measuring mechanism suitable for the electromagnetic relay comprises a left guide rail, a right guide rail and a base plate frame, wherein the left guide rail and the right guide rail are respectively installed on the left side and the right side of the base plate frame through screw bases, the base plate frame comprises 14 contact assemblies, moving assemblies and rotating assemblies are respectively arranged on the left guide rail and the right guide rail, and the moving assemblies on the left guide rail and the right guide rail are respectively meshed with the corresponding rotating assemblies and act under the driving of the rotating assemblies.
The contact assembly is a solenoid electromagnet arranged in a solenoid electromagnet jack of the base plate frame, and all the solenoid electromagnets of the base plate frame are connected in parallel by wires. The solenoid electromagnet consists of a movable iron core fixed on the counter force spring, a magnetic induction coil wound in a coil frame and a blocking iron connected with the counter force spring.
The moving assembly is composed of sliding grooves which are positioned on the left side and the right side of the guide rail and are connected with the guide rail wall, sliding blocks which are fixed on the sliding grooves on the two sides of the guide rail, nut rings which are fixed on the left side and the right side of the sliding blocks, a contact finger telescopic rail which is installed on the sliding blocks, a contact finger which can be stretched back and forth on the contact finger telescopic rail, and an air pump which is connected with the tail of the contact finger.
The rotating assembly is composed of a motor groove arranged on the rightmost side of the guide rail, a cage-type rotating motor fixed in the motor groove, and a rotating screw rod connected with a rotor of the cage-type rotating motor and matched with a left nut ring and a right nut ring on the sliding block.
In the solenoid electromagnet, coils on two sides are wound on a coil framework respectively in the same number of turns.
The left side and the right side of the motor groove are respectively fixed on the left side and the right side of the guide rail wall through screws.
A0.5 mm gap is formed between the guide rail sliding groove and the upper side of the sliding block, and the sliding block is tightly attached to the lower side of the sliding groove and is not contacted with the upper wall of the sliding groove in the process that the sliding block slides forwards and backwards.
The technical scheme of the invention is utilized to manufacture the automatic measuring mechanism suitable for the insulation resistance and the insulation withstand voltage of the electromagnetic relay, and the measurement of the insulation resistance and the insulation withstand voltage of the electromagnetic relay can be realized. The mechanism can enable the positive and negative contacts of the insulation resistance and the insulation withstand voltage tester to be connected with the designated contact after the solenoid type electromagnet and the rotating motor are electrified, so that the insulation resistance and withstand voltage measurement between the designated contacts can be quickly and accurately realized. Can accomplish different models electromagnetic relay's measurement through adjusting to touch the flexible distance of finger, cage type rotating electrical machines rotational speed, realize a tractor serves several purposes's function.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an insulation resistance and dielectric strength measurement mechanism suitable for an electromagnetic relay according to the present invention;
FIG. 2 is a schematic diagram of a contact assembly of an insulation resistance and dielectric breakdown voltage measuring mechanism for an electromagnetic relay according to the present invention;
FIG. 3 is a schematic diagram of a combination of moving parts in an insulation resistance and dielectric breakdown voltage measuring mechanism for an electromagnetic relay according to the present invention;
FIG. 4 is a schematic diagram of a combination of rotary components in an insulation resistance and dielectric strength measurement mechanism for an electromagnetic relay according to the present invention;
Detailed Description
The technical scheme is characterized in that a contact finger (11) of a sliding block (7) on a left guide rail (5) and a right guide rail (5) is connected with an anode of an insulation resistance and a cathode of a withstand voltage tester, a movable iron core (2-1) of any one solenoid electromagnet (3) in a base plate frame (4) is connected with the cathode of the insulation resistance and the cathode of the withstand voltage tester, the solenoid electromagnet (3) corresponding to one contact of a contact group to be measured is electrified, the movable iron core (2-1) drives the insulation resistance to be in contact with a contact of an anode relay of the withstand voltage tester, the contact finger (11) connected with the cathode of the insulation resistance and the cathode of the withstand voltage tester is connected with the other contact of the contact group to be measured at a rotating assembly and a moving assembly, the anode and the cathode of the withstand voltage tester are connected with the contact to be measured, and the insulation resistance and the withstand voltage test between designated contacts are completed.
In the technical scheme, the contact component is a solenoid electromagnet (3) arranged in the jack of the base plate frame (4) as shown in fig. 2, and all the solenoid electromagnets (3) of the base plate frame (4) are connected in parallel by a lead. The solenoid electromagnet (3) is composed of a movable iron core (2-1) fixed on the counter force spring, a magnetic induction coil (2-3) wound in a coil frame and a blocking iron connected with the counter force spring. The moving iron core (2-1) is still between the two coils under the action of the counterforce spring and is separated from the contact of the electromagnetic relay. After the solenoid electromagnet (3) is electrified, coils at two ends of the movable iron core (2-1) generate a magnetic field, the movable iron core (2-1) moves upwards under the action of the magnetic field to drive one contact of the insulation resistor and a contact group to be tested of a negative pole electromagnetic relay of the withstand voltage tester to be in contact, when the solenoid electromagnet (3) is powered off, the movable iron core (2-1) loses the action of the magnetic field and is separated from the contacts, and the movable iron core stands still between the two coils under the action of the counter force spring.
In the technical scheme, as shown in fig. 3, the moving assembly is composed of a sliding groove (1) which is positioned on the left side and the right side of the guide rail and is connected with a guide rail wall (8), a sliding block (7) which is fixed on the sliding groove (1) on the two sides of the guide rail, nut rings (9) which are fixed on the left side and the right side of the sliding block (7), a contact finger (11) telescopic rail (10) which is arranged on the sliding block (7), a contact finger (11) which can be stretched back and forth on the contact finger (11) telescopic rail (10), and an air pump which is connected with the tail of the contact finger (11). Slider (7) are located slider (7) the top and contact with motor groove (13) initially, clockwise when rotating screw rod (12), when rotating, the screw ring (9) is the level under the drive of rotating screw rod (12) and is removed down, drive slider (7) simultaneously and remove on guide rail sliding tray (1), stop when slider (7) remove another contact side of the contact group that awaits measuring, the air pump circular telegram, it is flexible forward under the drive of air pump to touch finger (11), the anodal and the contact of insulation resistance and withstand voltage tester, after the volume of awaiting measuring is finished, the air pump outage, touch finger (11) is flexible backward and is driven the anodal and the contact separation of insulation resistance and withstand voltage tester, rotate screw rod (12) anticlockwise rotation, slider (7) are static after returning to initial position under the drive of rotating screw rod (12).
In the technical scheme, as shown in fig. 4, the moving assembly is composed of a sliding groove (1) which is positioned on the left side and the right side of the guide rail and is connected with a guide rail wall (8), a sliding block (7) which is fixed on the sliding groove (1) on the two sides of the guide rail, nut rings (9) which are fixed on the left side and the right side of the sliding block (7), a contact finger (11) telescopic rail (10) which is arranged on the sliding block (7), a contact finger (11) which can be stretched back and forth on the contact finger (11) telescopic rail (10), and an air pump which is connected with the tail of the contact finger (11). The cage type motor is electrified, the motor rotor rotates clockwise, the rotating screw (12) rotates clockwise under the driving of the cage type motor rotor, the cage type motor is powered off when the sliding block (7) reaches a specified position, the rotating screw (12) stops rotating, and the sliding block (7) is static. When the measurement is finished, the cage type motor is electrified, the motor rotor rotates anticlockwise, the rotating screw rod (12) rotates anticlockwise under the driving of the cage type motor rotor, the cage type motor is powered off when the sliding block (7) reaches the initial position, the rotating screw rod (12) stops rotating, and the sliding block (7) is static.
The upper side and the lower side of the guide rail are viewed from top to bottom in the anticlockwise movement and the clockwise movement, the rotating screw (12) in the rotating assembly, the motor rotor and the sliding block (7) in the moving assembly run in the above directions, and the running states of other components can be referred to.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides an insulation resistance and withstand voltage measuring mechanism suitable for electromagnetic relay, includes left guide rail (2), right guide rail (5), base grillage (4), left guide rail (2) and right guide rail (5) are respectively through screw pedestal mounting in the left and right sides of base grillage (4), contain 14 contact assemblies in base grillage (4), be equipped with removal subassembly and rotating assembly on left guide rail (2) and right guide rail (5) respectively, removal subassembly on left guide rail (2) and right guide rail (5) meshes with its corresponding rotating assembly respectively to move under rotating assembly's drive;
the contact assembly is a solenoid electromagnet (3) arranged in a solenoid electromagnet jack (6) of the base plate frame (4), and all the solenoid electromagnets (3) of the base plate frame (4) are connected in parallel by wires; the solenoid electromagnet (3) is composed of a movable iron core (2-1) fixed on the counter force spring, a magnetic induction coil (2-3) wound in a coil frame and a blocking iron (2-4) connected with the counter force spring (2-2);
the moving assembly is composed of sliding grooves (1) which are positioned on the left side and the right side of the guide rail and connected with a guide rail wall (8), sliding blocks (7) which are fixed on the sliding grooves (1) on the two sides of the guide rail, nut rings (9) which are fixed on the left side and the right side of the sliding blocks (7), a contact finger (11) telescopic rail (10) which is arranged on the sliding blocks (7), a contact finger (11) which can be stretched back and forth on the contact finger (11) telescopic rail (10) and an air pump which is connected with the tail part of the contact finger (11);
the rotating assembly is formed by a motor groove (13) arranged at the rightmost side of the guide rail, a cage-type rotating motor fixed in the motor groove (13), and a rotating screw rod (12) which is connected with a rotor of the cage-type rotating motor and is matched with a left nut ring (9) and a right nut ring (9) on the sliding block (7);
a movable iron core (2-1) of any solenoid electromagnet (3) in a base plate frame (4) is connected with the negative electrode of an insulation resistance and voltage-withstanding tester, the solenoid electromagnet (3) corresponding to one contact of a contact group to be measured is electrified, the movable iron core (2-1) drives the insulation resistance to be contacted with a positive relay contact of the voltage-withstanding tester, a contact finger (11) connected with the negative electrode of the insulation resistance and the voltage-withstanding tester is connected with the other contact of the contact group to be measured at a rotating assembly and a moving assembly, the positive electrode and the negative electrode of the insulation resistance and the voltage-withstanding tester are connected with the contact to be measured, and the insulation resistance and the voltage-withstanding test between designated contacts are completed.
2. The insulation resistance and withstand voltage measuring mechanism suitable for an electromagnetic relay according to claim 1, characterized in that: in the solenoid electromagnet (3), coils on two sides are wound on a coil framework respectively in the same number of turns; the left side and the right side of the motor groove (13) are respectively fixedly sleeved on the left side and the right side of the guide rail wall (8) through screws.
3. The insulation resistance and withstand voltage measuring mechanism suitable for an electromagnetic relay according to claim 1, characterized in that: a gap of 0.5mm exists between the guide rail sliding groove (1) and the upper side of the sliding block (7), and in the process that the sliding block (7) slides forwards and backwards, the sliding block (7) is tightly attached to the lower side of the sliding groove (1) and is not contacted with the upper wall of the sliding groove (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884197.2A CN110780161B (en) | 2019-09-19 | 2019-09-19 | Insulation resistance and insulation withstand voltage measuring mechanism suitable for electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884197.2A CN110780161B (en) | 2019-09-19 | 2019-09-19 | Insulation resistance and insulation withstand voltage measuring mechanism suitable for electromagnetic relay |
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| Publication Number | Publication Date |
|---|---|
| CN110780161A CN110780161A (en) | 2020-02-11 |
| CN110780161B true CN110780161B (en) | 2022-02-22 |
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| CN201910884197.2A Active CN110780161B (en) | 2019-09-19 | 2019-09-19 | Insulation resistance and insulation withstand voltage measuring mechanism suitable for electromagnetic relay |
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Citations (6)
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| CN1804652A (en) * | 2006-01-25 | 2006-07-19 | 天津市百利电气有限公司 | Integrated test bench for creepage breaker |
| CN104849659A (en) * | 2015-06-08 | 2015-08-19 | 江苏森源电气股份有限公司 | Final inspection workbench of vacuum circuit breaker |
| CN204789936U (en) * | 2015-07-23 | 2015-11-18 | 南车株洲电力机车研究所有限公司 | Relay detection device |
| CN206161687U (en) * | 2016-10-31 | 2017-05-10 | 中国电力科学研究院 | Automatic take accuse circuit breaker test fixture mechanism |
| CN106680682A (en) * | 2016-12-13 | 2017-05-17 | 宁波中车时代传感技术有限公司 | Parallel testing apparatus of multichannel insulation and voltage resistance |
| CN206178104U (en) * | 2016-11-23 | 2017-05-17 | 天津航空机电有限公司 | Miniature circuit breaker life test drive arrangement |
-
2019
- 2019-09-19 CN CN201910884197.2A patent/CN110780161B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804652A (en) * | 2006-01-25 | 2006-07-19 | 天津市百利电气有限公司 | Integrated test bench for creepage breaker |
| CN104849659A (en) * | 2015-06-08 | 2015-08-19 | 江苏森源电气股份有限公司 | Final inspection workbench of vacuum circuit breaker |
| CN204789936U (en) * | 2015-07-23 | 2015-11-18 | 南车株洲电力机车研究所有限公司 | Relay detection device |
| CN206161687U (en) * | 2016-10-31 | 2017-05-10 | 中国电力科学研究院 | Automatic take accuse circuit breaker test fixture mechanism |
| CN206178104U (en) * | 2016-11-23 | 2017-05-17 | 天津航空机电有限公司 | Miniature circuit breaker life test drive arrangement |
| CN106680682A (en) * | 2016-12-13 | 2017-05-17 | 宁波中车时代传感技术有限公司 | Parallel testing apparatus of multichannel insulation and voltage resistance |
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| CN110780161A (en) | 2020-02-11 |
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