CN111751644A - Device and method for detecting waterproof performance of electromagnet coil - Google Patents
Device and method for detecting waterproof performance of electromagnet coil Download PDFInfo
- Publication number
- CN111751644A CN111751644A CN202010545856.2A CN202010545856A CN111751644A CN 111751644 A CN111751644 A CN 111751644A CN 202010545856 A CN202010545856 A CN 202010545856A CN 111751644 A CN111751644 A CN 111751644A
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- electromagnet coil
- closed container
- waterproof performance
- detecting
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Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
- G01R31/003—Environmental or reliability tests
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
Abstract
The invention relates to a device and a method for detecting the waterproof performance of an electromagnet coil. Placing an electromagnet coil to be detected into a closed container; injecting clear water into the closed container, and enabling the clear water to submerge the electromagnet coil; sealing the closed container, and adjusting the initial pressure value of the pressure detection device; when the initial pressure value is at a set value, injecting compressed air into the closed container and timing, and stopping injecting the compressed air when the timing reaches the set value; after stopping injecting the compressed air, opening an exhaust valve to exhaust; after exhausting, taking out the electromagnet coil; and after drying the water mark on the surface of the electromagnetic coil, detecting the insulation resistance value and the leakage current value of the electromagnetic coil, and judging whether the insulation resistance value and the leakage current value meet the standard requirement according to the detection value. Adopt detection device to carry out electromagnet coil waterproof performance and detect the waterproof performance of judgement electromagnet coil that can be quick, can carry out first piece in the production operation of reality and detect and the process selective examination to the quality reliability and the stability of the coil of moulding plastics have been guaranteed.
Description
Technical Field
The invention relates to the technical field of electromagnet detection for hydraulic valves, in particular to a device and a method for detecting the waterproof performance of an electromagnet coil.
Background
The injection molding coil of the electromagnet achieves the protection of a copper wire winding by depending on the good filling and wrapping of injection molding materials, so the wrapping sealing performance of the injection molding coil directly determines the reliability and the service life of the electromagnet, the injection molding coil is detected and judged by adopting a Haidefus continuous immersion test method, the coil is immersed in water with the depth of 1 meter for 120 hours after being connected with a power supply with rated voltage, and the insulation resistance and the leakage current are detected to be in accordance with the standard value after the test. The method has the defects that the test period is long, the method is not suitable for normal flow production operation, only some types of test detection of sampling inspection can be carried out, and the electromagnet coils in the batch production process cannot be timely and effectively detected.
Disclosure of Invention
The invention aims to provide a device for detecting the waterproof performance of an electromagnet coil, which can solve the problem of long detection period of the existing detection method;
a second object of the present invention is to provide a method for detecting waterproof performance of an electromagnet coil, which uses the device for detecting waterproof performance of an electromagnet coil as described above to detect the electromagnet coil.
The invention provides a device for detecting the waterproof performance of an electromagnet coil, which comprises a closed container, an air injection valve, an exhaust valve, a pressure detection device and an air inlet pipe, wherein the air injection valve is arranged on the closed container;
the air injection valve and the exhaust valve are arranged at the top of the closed container and are connected with the accommodating cavity of the closed container;
the air inlet pipe is communicated with the air injection valve and is used for providing compressed air into the accommodating cavity;
the pressure detection device is used for detecting the air pressure in the accommodating cavity.
Preferably, the closed container comprises a tank body and a sealing cover arranged at the upper part of the tank body;
the tank body is connected with the sealing cover through a flange plate, and a sealing washer is arranged between the flange plate of the tank body and the flange plate of the sealing cover.
Preferably, the air injection valve and the air exhaust valve are arranged on the sealing cover.
Preferably, the pressure detection device is provided on the intake pipe or on the closed container.
Preferably, the closed container is further provided with a water injection pipe and a water drainage pipe, and the water drainage pipe is arranged at the bottom of the closed container.
The method for detecting the waterproof performance of the electromagnet coil adopts the device for detecting the waterproof performance of the electromagnet coil to detect the waterproof performance of the electromagnet coil, and comprises the following steps:
placing an electromagnet coil to be detected into a closed container;
injecting clear water into the closed container, and enabling the clear water to submerge the electromagnet coil;
sealing the closed container, and adjusting the initial pressure value of the pressure detection device;
when the initial pressure value is at a set value, injecting compressed air into the closed container and timing, and stopping injecting the compressed air when the timing reaches the set value;
after stopping injecting the compressed air, opening an exhaust valve to exhaust;
after exhausting, opening the closed container, and taking out the electromagnet coil;
and after drying the water mark on the surface of the electromagnetic coil, detecting the insulation resistance value and the leakage current value of the electromagnetic coil, and judging whether the insulation resistance value and the leakage current value meet the standard requirement according to the detection value.
Preferably, the number of the electromagnet coils to be detected placed in the closed container is 3-10.
Preferably, the initial pressure value is between 0.4 and 0.6 MPa.
Preferably, the timer setting is 4-7 min.
Preferably, compressed air is used to blow dry the water traces on the surface of the electromagnetic coil.
Has the advantages that:
the detection device and the detection method can quickly judge the waterproof performance of the electromagnet coil, and can carry out first piece detection and process spot check in actual production operation, so that the quality reliability and stability of the injection molding coil are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a device for detecting waterproof performance of an electromagnet coil according to an embodiment of the present invention;
description of reference numerals:
1: a closed container; 2: an air injection valve; 3: an exhaust valve; 4: a pressure detection device; 5: an air inlet pipe; 6: an electromagnet coil.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, in the present embodiment, there is provided an electromagnet coil waterproof performance detection apparatus, which includes a closed container 1, a gas injection valve 2, an exhaust valve 3, a pressure detection apparatus 4, and a gas inlet pipe 5.
The gas injection valve 2 and the exhaust valve 3 are arranged at the top of the closed container 1, and the gas injection valve 2 and the exhaust valve 3 are connected with the accommodating cavity of the closed container 1.
The air inlet pipe 5 is communicated with the air injection valve 2 and used for providing compressed air into the accommodating cavity, and the pressure detection device is used for detecting air pressure in the accommodating cavity.
Adopt this detection device to carry out the waterproof nature of electromagnet coil 6 and detect, the waterproof performance of judgement electromagnet coil 6 that can be quick can carry out first piece detection and process selective examination in the production operation of reality to the quality reliability and the stability of coil of moulding plastics have been guaranteed.
Specifically, the closed container 1 comprises a tank body and a sealing cover arranged on the upper portion of the tank body, the tank body is connected with the sealing cover through a flange plate, and a sealing gasket is arranged between the flange plate of the tank body and the flange plate of the sealing cover.
The closed container 1 is made of a tank body and a sealing cover, the tank body and the sealing cover are connected through a flange plate, and a sealing gasket is arranged between the flange plates. The hermetic container 1 can be made to have a good sealing property.
The gas injection valve 2 and the gas exhaust valve 3 are arranged on the sealing cover.
The pressure detection device 4 is provided on the intake pipe 5 or on the closed casing 1. Preferably, the pressure detecting device 4 is an air pressure gauge, which is arranged on the air inlet pipe 5.
The air inlet pipe 5 is communicated with a compressed air source.
The closed container 1 is also provided with a water injection pipe and a water drainage pipe, and the water drainage pipe is arranged at the bottom of the closed container 1. The arrangement of the water injection pipe and the water discharge pipe is convenient for injecting water and discharging water into the closed container.
In this embodiment, there is also provided a method for detecting waterproof performance of an electromagnet coil, which uses the above-mentioned device for detecting waterproof performance of an electromagnet coil, and includes the following steps:
placing an electromagnet coil 6 to be detected into the closed container 1;
injecting clear water into the closed container 1, and enabling the clear water to submerge the electromagnet coil 6;
sealing the closed container 1, and adjusting the initial pressure value of the pressure detection device 4;
when the initial pressure value is at a set value, injecting compressed air into the closed container 1, timing, and stopping injecting the compressed air when the timing reaches the set value;
after stopping injecting the compressed air, opening the exhaust valve 3 to exhaust;
after the exhaust is finished, opening the closed container 1 and taking out the electromagnet coil 6;
and after drying the water mark on the surface of the electromagnetic coil 6, detecting the insulation resistance value and the leakage current value of the electromagnetic coil 6, and judging whether the insulation resistance value and the leakage current value meet the standard requirement according to the detection value.
The number of the electromagnet coils 6 to be detected put into the closed container 1 is 3-10.
The initial pressure value is between 0.4 and 0.6 MPa.
The setting value of timing is 4-7min, preferably, the setting value of timing is 5min, and the time can be properly adjusted according to the specific requirements of the experiment.
The water stain on the surface of the electromagnetic coil 6 is dried by using compressed air.
In the embodiment, the detection method can quickly judge the waterproof performance of the electromagnet coil, and can carry out first piece detection and process spot check in actual production operation, so that the quality reliability and stability of the injection molding coil are ensured.
To further explain the above detection method, the present embodiment takes the switching electromagnet Z15-18YC DT coil as an example as follows:
firstly, carrying out injection molding and encapsulation on a Z15-18YC DT coil according to an injection molding process;
further, 3-10 injection molding coils are taken and placed in a closed container;
further, injecting clear water into the closed container, and submerging the coil in water;
further, sealing a sealing cover and locking the sealing cover and the tank body;
further, adjusting the pressure value of an air pressure gauge to be 0.4-0.6 MPa;
further, setting the test time to be 5 minutes, and properly adjusting the time according to the specific requirements of the experiment;
further, the gas injection valve is opened to inject gas into the tank body, and timing is started at the same time;
further, after the timing time is up (after 5 minutes), closing the gas injection valve, simultaneously opening the exhaust valve, and exhausting gas in the tank body;
further, opening the closed cover of the tank body, and taking out the coil;
further, drying the surface water stain by using compressed air;
and further, immediately using an insulation withstand voltage instrument to detect whether the insulation resistance value and the leakage current value of the coil meet the standard requirements.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The device for detecting the waterproof performance of the electromagnet coil is characterized by comprising a closed container, an air injection valve, an exhaust valve, a pressure detection device and an air inlet pipe;
the air injection valve and the exhaust valve are arranged at the top of the closed container and are connected with the accommodating cavity of the closed container;
the air inlet pipe is communicated with the air injection valve and is used for providing compressed air into the accommodating cavity;
the pressure detection device is used for detecting the air pressure in the accommodating cavity.
2. The electromagnet coil waterproof performance detection device according to claim 1, wherein the closed container includes a tank body, and a seal cover provided on an upper portion of the tank body;
the tank body is connected with the sealing cover through a flange plate, and a sealing washer is arranged between the flange plate of the tank body and the flange plate of the sealing cover.
3. The electromagnet coil waterproof performance detection device according to claim 2, wherein the air injection valve and the exhaust valve are arranged on the sealing cover.
4. The electromagnet coil waterproof performance detection device according to claim 1, wherein the pressure detection device is provided on an air inlet pipe or on a closed container.
5. The electromagnet coil waterproof performance detection device according to claim 1, wherein the closed container is further provided with a water injection pipe and a water drainage pipe, and the water drainage pipe is arranged at the bottom of the closed container.
6. A method for detecting waterproof performance of an electromagnet coil, characterized in that the detection of the waterproof performance of the electromagnet coil is carried out by using the device for detecting waterproof performance of an electromagnet coil according to any one of claims 1 to 5, and the method comprises the following steps:
placing an electromagnet coil to be detected into a closed container;
injecting clear water into the closed container, and enabling the clear water to submerge the electromagnet coil;
sealing the closed container, and adjusting the initial pressure value of the pressure detection device;
when the initial pressure value is at a set value, injecting compressed air into the closed container and timing, and stopping injecting the compressed air when the timing reaches the set value;
after stopping injecting the compressed air, opening an exhaust valve to exhaust;
after exhausting, opening the closed container, and taking out the electromagnet coil;
and after drying the water mark on the surface of the electromagnetic coil, detecting the insulation resistance value and the leakage current value of the electromagnetic coil, and judging whether the insulation resistance value and the leakage current value meet the standard requirement according to the detection value.
7. The method for detecting the waterproof performance of the electromagnet coil according to claim 6, wherein the number of the electromagnet coils to be detected placed in the closed container is 3-10.
8. The method for detecting the waterproof performance of the electromagnet coil according to claim 6, wherein the initial pressure value is set to 0.4 to 0.6 MPa.
9. The method for detecting the waterproof performance of the electromagnet coil according to claim 6, wherein the set value of the timing is 4-7 min.
10. The method for detecting the waterproof performance of the electromagnet coil according to claim 6, wherein compressed air is used for drying water traces on the surface of the electromagnet coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010545856.2A CN111751644A (en) | 2020-06-16 | 2020-06-16 | Device and method for detecting waterproof performance of electromagnet coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010545856.2A CN111751644A (en) | 2020-06-16 | 2020-06-16 | Device and method for detecting waterproof performance of electromagnet coil |
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| Publication Number | Publication Date |
|---|---|
| CN111751644A true CN111751644A (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010545856.2A Pending CN111751644A (en) | 2020-06-16 | 2020-06-16 | Device and method for detecting waterproof performance of electromagnet coil |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175400A (en) * | 2011-02-21 | 2011-09-07 | 深圳市易特照明有限公司 | Device for detecting product waterproof property |
| CN206410831U (en) * | 2017-02-10 | 2017-08-15 | 宋洁 | A kind of product hermeticity multifunctional detecting device |
| CN108627307A (en) * | 2017-03-21 | 2018-10-09 | 深圳市宏拓通达电子科技有限公司 | Waterproof detection system |
| CN109282947A (en) * | 2018-09-29 | 2019-01-29 | 芜湖赋兴光电有限公司 | Waterproofness device for fast detecting |
| CN109946633A (en) * | 2018-12-18 | 2019-06-28 | 北京航天计量测试技术研究所 | A kind of solenoid valve multifunctional tester calibration system |
| CN110736589A (en) * | 2019-12-02 | 2020-01-31 | 合威电子（苏州）有限公司 | classification type waterproof test equipment with multiple parts |
| CN110779662A (en) * | 2019-11-08 | 2020-02-11 | 立讯智造(浙江)有限公司 | Electronic product waterproof grade testing device and testing method |
| CN110837032A (en) * | 2019-11-29 | 2020-02-25 | 魏洋洋 | Waterproof insulation detection device for electric instrument |
-
2020
- 2020-06-16 CN CN202010545856.2A patent/CN111751644A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175400A (en) * | 2011-02-21 | 2011-09-07 | 深圳市易特照明有限公司 | Device for detecting product waterproof property |
| CN206410831U (en) * | 2017-02-10 | 2017-08-15 | 宋洁 | A kind of product hermeticity multifunctional detecting device |
| CN108627307A (en) * | 2017-03-21 | 2018-10-09 | 深圳市宏拓通达电子科技有限公司 | Waterproof detection system |
| CN109282947A (en) * | 2018-09-29 | 2019-01-29 | 芜湖赋兴光电有限公司 | Waterproofness device for fast detecting |
| CN109946633A (en) * | 2018-12-18 | 2019-06-28 | 北京航天计量测试技术研究所 | A kind of solenoid valve multifunctional tester calibration system |
| CN110779662A (en) * | 2019-11-08 | 2020-02-11 | 立讯智造(浙江)有限公司 | Electronic product waterproof grade testing device and testing method |
| CN110837032A (en) * | 2019-11-29 | 2020-02-25 | 魏洋洋 | Waterproof insulation detection device for electric instrument |
| CN110736589A (en) * | 2019-12-02 | 2020-01-31 | 合威电子（苏州）有限公司 | classification type waterproof test equipment with multiple parts |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211116 Address after: 455000 No. 2, north of west section of Changjiang Avenue, high tech Zone, Anyang City, Henan Province Applicant after: Anyang Kaidi Magnetic Technology Co.,Ltd. Address before: 455000 north of west section of Changjiang Avenue, high tech Zone, Anyang City, Henan Province Applicant before: ANYANG KAIDI ELECTROMAGNETIC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20201009 |
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