CN208026830U - A kind of device in X -ray inspection X spark plug proof voltage energy - Google Patents

Abstract

The utility model provides a kind of device in X -ray inspection X spark plug proof voltage energy, including test chamber, for providing the closed environment for detecting spark plug to be measured, correspond to and be equipped with imaging device at the central electrode of spark plug to be measured, imaging device is used to record the discharge condition of spark plug to be measured；Compressed gas supply module, for filling compressed gas into test chamber；Power supply module, for providing stable DC high voltage in High-Voltage Testing Process or providing in low voltage experiment stable DC low-voltage；Control process module, it is supplied to test chamber for controlling compressed gas supply module, it controls power supply module and emits pulse voltage, control imaging device work to spark plug to be measured, and fire detecting flower is treated with given logical and fills in horizontal high voltage test, low voltage experiment and determining defects.The utility model identifies that the accuracy of defect is high, the ceramic volume defect in spark plug to be measured can be effectively rejected, for instructing spark plug production firm for examining in batches.

Description

A kind of device in X -ray inspection X spark plug proof voltage energy

Technical field

The utility model is related to a kind of devices in X -ray inspection X spark plug proof voltage energy, specifically, in spark plug In production process, lateral electrode bending the proof voltage energy for coming to examine spark plug.

Background technology

Spark plug is widely used for the ignition system part on internal combustion engine, and the lateral electrode of spark plug is welded on shell ends Mouthful, through bending lateral electrode, forms certain interval with central electrode and discharge via ignition coil on internal combustion engine, electric current is via fire Hua Sai punctures the air-fuel mixture gas compressed between central electrode and lateral electrode, spark is generated, to light compression fuel-air mixture Body pushes piston acting, realizes internal combustion driving, this requires spark plug must have a good performance, and ignition gap Can be two particularly important characteristics of spark plug with proof voltage.

Ignition gap at present can have been ensured by device or artificial inspection, however be directed to proof voltage energy Inspection, although both at home and abroad major part spark plug factory have spark plug proof voltage can verifying attachment, the overwhelming majority The principle of voltage drop is judged after being limited in by high-voltage pulse electric discharge, and in the case of high pressure gas environment It is tested, for example, the Chinese utility model patent of Publication No. CN201210549956.8, discloses a kind of applied to production The method and device that spark plug high pressure proof voltage on line detects automatically, feature pass through a clamping machine in processing line Structure clamps spark plug to be tested, so that the igniting end of thread is inserted into an air seal intracavitary downward, high pressure is poured into seal chamber Air；Again to high-voltage pulse string is passed through on spark plug conductive lever, according to insulation defect, voltage declines after high-voltage breakdown Principle, is acquired voltage signal by circuit detection plate and window judgement, Qualified pulse string are passed to controller according to parameter Setting judges whether examined spark plug proof voltage is qualified.The patent is to be declined using voltage after high-voltage pulse electric discharge The online proof voltage that principle carries out is examined, but since test process only has a step, and the plug ignition gap of test mode is Through being formed, this results in meeting, and there are the following problems：1, test carries out under high pressure gas environment, due to surface of ceramic body and runs through Property defect easily blocked by high pressure gas, and high pressure gas has stronger insulating properties, reduces the accuracy of identification defect；2, single Pure to be judged according to voltage value, breakdown is likely to occur in charging process, it is also possible to be happened at discharge process, simple voltage Value can not effectively reject the breakdown in discharge process, and decision rule setting can not to the voltage signal less than setting voltage value It receives, therefore each pulse can not also be judged；3, the ignition gap of test spark plug has been formed, in addition center Ceramic body thinner thickness near electrode, the ceramic body breakdown near central electrode and normal ignition, the difference that voltage declines is not Obviously, it be easy to cause erroneous judgement.

The another Chinese utility model patent for having Publication No. CN201310503595.8 discloses a kind of in spark plug The device and method for testing the spark plug after being assembled into internal combustion engine, which includes Hi-pot test probe, with machine Detect to tool the spark plug.Hi-pot test probe includes non-conductive section, the conducting ring and use blocked substantially by non-conductive section In the high voltage connector for being electrically connected to spark plug tip.The device further includes high voltage control case, with high-voltage power supply and electrical ground, And including at least one of the crack detection circuit and spark ignitor circuit of insulating.This method includes being come using described device The assembled spark plug of test.Though the patent mentions the detection of ceramics insulator crackle, the proof voltage not carried for ceramics Energy；And spark plug is the state being assembled on internal combustion engine, be not produce spark plug in X -ray inspection X, therefore for spark plug it is resistance to The problems of online inspection of voltage performance, it is also necessary to further to improve and optimize.

Utility model content

The technical problem to be solved by the present invention is to overcome defect described in the prior art, to provide a kind of use In the device in X -ray inspection X spark plug proof voltage energy, the utility model identifies that the accuracy of defect is high, can effectively reject electric discharge Breakdown in the process, the further perfect online proof voltage of spark plug can detection, spark plug production firm can be instructed to be used for Batch is examined.

In order to achieve the above objectives, the utility model adopts the following technical solution：

A kind of device in X -ray inspection X spark plug proof voltage energy, including：

Test chamber corresponds to for providing the closed environment for detecting the spark plug to be measured in the spark plug to be measured Imaging device is equipped at heart electrode, the imaging device is used to record the discharge condition of the spark plug to be measured；

Compressed gas supply module is connected to the test chamber, for filling compressed gas into the test chamber, is ensured Test pressure in test process in test chamber；

Power supply module is connected with the screw rod of the spark plug to be measured, for providing stabilization in High-Voltage Testing Process DC high voltage provides stable DC low-voltage in low voltage experiment；

Control process module, respectively with the imaging device, the compressed gas supply module and the power supply module Signal connects, and is supplied to the test chamber for controlling the compressed gas supply module, controls the power supply module to described Spark plug to be measured emits pulse voltage, controls the imaging device work, and with according to given logical to the spark plug to be measured Carry out Hi-pot test, low voltage experiment and determining defects.

Preferably：The test chamber is made of test cabinet epicoele and test cabinet cavity of resorption, and the test cabinet epicoele is used to set There is the spark plug top to be measured of screw rod to provide sealing detection environment, the test cabinet cavity of resorption is used for as equipped with the to be measured of central electrode Spark plug lower part provides sealing detection environment；The test cabinet cavity of resorption corresponds to the imaging dress of setting at the central electrode It sets, the imaging device is tightly connected with the test cabinet cavity of resorption.

Preferably：The imaging device is high speed camera.

Preferably：The imaging device capture region is annulus, and the internal diameter of the annulus is the diameter of the central electrode, Lowest calibre of the outer diameter of the annulus close to the spark plug ceramic body to be measured.

Further：The compressed gas supply module include first pressure gauge, the first PID proportioning valves, second pressure gauge, 2nd PID proportioning valves, gross pressure table, air accumulator and air compressor machine, the first pressure gauge and the first PID proportioning valves successively with The test cabinet epicoele connects to form the first branch, the second pressure gauge and the 2nd PID proportioning valves successively with the survey Examination room cavity of resorption connects to form the second branch, and the first branch is connect with after the second branch parallel connection with the gross pressure table, The gross pressure table is connect with the air accumulator and the air compressor machine signal successively, the air compressor machine, the gross pressure table, described First PID proportioning valves and the 2nd PID proportioning valves are connect with the control module signal respectively.

Preferably：The control process module includes high-frequency intelligent module, coil and control module, the high-frequency intelligent mould Block is to obtain pulse voltage, the triggering imaging device work and to control module reception, processing and feedback letter Breath, the coil are connect with the high-frequency intelligent module by signal, for amplifying the pulse voltage, and amplified pulse is electric Pressure loads on the screw rod of the spark plug to be measured；The control module is for controlling the compressed gas supply module, described The opening and closing of power supply module, the high-frequency intelligent module and the coil.

Further：The high-frequency intelligent module includes triggering and receiving module, processing module and communication module；

The triggering and receiving module are connect with the power supply module signal, and pulse signal acquisition pulse is formed for triggering Voltage triggers the imaging device and works, and the feedback of receiving voltage signal and imaging signal；

The processing module is for being calculated and being handled to the information received；

The communication module, which is used to that the result of conversion to be transferred to the control module and receives the control module, to be fed back Result information.

Further：Described device further includes alarm module, the alarm module respectively with the processing module and institute The connection of control module signal is stated, is alarmed when testing result is unqualified.

Yet further：The alarm module is audible-visual annunciator.

Yet further：The control module is PLC module.

Yet further：The processing module is CPU module.

The beneficial effects of the utility model are：

(1) the utility model is used to carry out on-line checking to the insulation defect of spark plug, in the effect of control process module Down can to the spark plug to be measured of the non-bending state of lateral electrode successively into horizontal high voltage detection, the detection of preliminary determining defects, low pressure and Determining defects can carry out figure in detection process due to being provided with imaging device to the discharge process of each pulse As record, whether discharged with spark plug to be measured described in the picture appraisal according to record when being tested, and whether centered on Electrode discharge；For traditional spark plug tester, picture appraisal is increased on the basis of voltage signal is evaluated, Picture appraisal can effectively distinguish the position of electric spark generation, and identification is that the regular picture of central electrode or defect are hit The electric spark worn and generated, the overall merit of the two substantially increase the accuracy to spark plug insulation defect.

(2) test cabinet of the utility model includes test cabinet epicoele and test cabinet cavity of resorption, and the two is independent sealing device, Test cabinet epicoele is used to provide sealing detection environment for the spark plug top to be measured equipped with screw rod, test cabinet cavity of resorption for be equipped with The spark plug lower part to be measured of central electrode provides sealing detection environment；Test cabinet epicoele and test cabinet cavity of resorption are provided separately convenient for same When the position up and down of spark plug is detected because spark plug top to be measured bore is smaller, then need the ceramics of test cabinet epicoele Body is thicker, and insulating properties is stronger, and spark plug lower part to be measured bore is larger, then needs the ceramic body of test cabinet cavity of resorption relatively thin, insulation Property it is relatively weak, in order to simultaneously treat survey spark plug different parts be detected, it is therefore desirable to for spark plug to be measured not Corresponding test cabinet epicoele and test cabinet cavity of resorption are set with position, inject the pressure of different pressures into different cavitys in test Contracting gas is to complete to test.In addition to this, test cabinet epicoele can ensure not climb electricity from spark plug top, better ensure that test The insulation of room epicoele provides sufficient guarantee to the accuracy of test cabinet cavity of resorption test, and cavity of resorption can be used for testing weak Ceramic body link.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it can also be obtained according to these attached drawings other attached drawings.

The structural schematic diagram that Fig. 1 is provided by the utility model in the device of X -ray inspection X spark plug proof voltage energy；

The structural schematic diagram for the test chamber that Fig. 2 is provided by Fig. 1 embodiments.

Reference sign：

1, external power supply；2, air compressor machine；3, air accumulator；4, gross pressure table；5, the first PID proportioning valves；6, first pressure Table；7, the 2nd PID proportioning valves；8, second pressure gauge；9, conversion module；10, transformer；11, coil；12, high-frequency intelligent module； 13, imaging device；14, test cabinet cavity of resorption；15, test cabinet epicoele；16, control module；17, alarm module；18, epicoele seals Lid；19, cavity sealing ring；20, ceramic body sealing ring；21, ceramic body sealing ring；22, ceramic body sealing ring Supported Nylon block； 23, nylon fixed pedestal；24, fixing bolt；25, fixed metal derby；26, fixed metal derby；27, main basal base；28, pedestal；29, Fixed block；30, fixing bolt；31, sealing ring.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

As shown in Figure 1, the utility model provides a kind of device in X -ray inspection X spark plug proof voltage energy, including：It surveys Chamber is tried, for providing the closed environment for detecting spark plug to be measured, corresponds at the central electrode of spark plug to be measured and is equipped with imaging dress It sets, imaging device is used to record the discharge condition of spark plug to be measured；Compressed gas supply module, is connected to test chamber, for Compressed gas is filled in test chamber, ensures the test pressure in test chamber in test process；Power supply module, with spark plug to be measured Screw rod is connected, stable straight for providing stable DC high voltage in High-Voltage Testing Process or providing in low voltage experiment Flow low-voltage；Control process module is connect with imaging device, compressed gas supply module and power supply module signal respectively, is used It is supplied to test chamber in control compressed gas supply module, control power supply module emits pulse voltage, control imaging dress to screw rod Work is set, and horizontal high voltage test, low voltage experiment and determining defects are filled in treat fire detecting flower according to given logical.

The utility model is used to carry out on-line checking to the insulation defect of spark plug, can under the action of control process module With the spark plug to be measured to the non-bending state of lateral electrode successively into horizontal high voltage detection, the detection of preliminary determining defects, low pressure and defect Judgement can carry out image note in detection process due to being provided with imaging device to the discharge process of each pulse Record, whether discharged with spark plug to be measured described in the picture appraisal according to record when being tested, and whether centered on electrode Electric discharge；For traditional spark plug tester, picture appraisal, image are increased on the basis of voltage signal is evaluated Evaluation can effectively distinguish electric spark generation position, identification be central electrode regular picture or defect it is breakdown and The electric spark of generation, the overall merit of the two substantially increase the accuracy to spark plug insulation defect.

As shown in Fig. 2, test chamber is made of test cabinet epicoele 15 and test cabinet cavity of resorption 14, test cabinet epicoele 15 is used to set There is the spark plug top to be measured of screw rod to provide sealing detection environment, is sealed by epicoele sealing cover 18, nylon fixed pedestal 23, cavity Circle 19, ceramic body sealing ring Supported Nylon block 22, fixed metal derby (25,26), fixing bolt 24 and main basal base 27 form, chamber Body sealing ring 19 prevents test cabinet epicoele gas from leaking outside, and the gas in test cabinet epicoele 15 fixes base by being evenly distributed on nylon Four holes being distributed on seat 23, into what is be made of ceramic body sealing ring (20,21) and ceramic body sealing ring Supported Nylon block 22 Space forms high pressure gas, after high-voltage electricity is loaded into the screw rod of spark plug to be measured, the insulation materials such as high pressure gas and corresponding nylon Material can effectively prevent flashover equivalent risk；Test cabinet cavity of resorption 14 is used to provide sealing for the spark plug lower part to be measured equipped with central electrode Detect environment；It is mainly made of pedestal 28, fixed block 29, fixing bolt 30, sealing ring 31 and imaging device 13, sealing ring 31 For spark plug and 28 contact area of pedestal to be sealed, prevent test cabinet cavity of resorption 14 from leaking outside, 13 face of imaging device is to be measured Central electrode is arranged, and imaging device 13 has formed sealing with pedestal 28, ensures test pressure, test process imaging dress Discharge process can directly be shot by setting 13.

The test cabinet of the utility model includes test cabinet epicoele 15 and test cabinet cavity of resorption 14, and the two is independent sealing dress It sets, test cabinet epicoele 15 is used for for providing sealing detection environment, test cabinet cavity of resorption for the spark plug top to be measured equipped with screw rod 14 for the spark plug lower part to be measured equipped with central electrode for providing sealing detection environment；Test cabinet epicoele 15 and test cabinet cavity of resorption 14 be provided separately convenient for and meanwhile treat survey spark plug position up and down be detected because spark plug top to be measured bore is smaller, Then need the ceramic body of test cabinet epicoele 15 thicker, insulating properties is stronger, and spark plug lower part to be measured bore is larger, then needs test cabinet The ceramic body of cavity of resorption 14 is relatively thin, and insulating properties is relatively weak, and the different parts in order to treat survey spark plug simultaneously are detected, therefore Need the different parts for spark plug to be measured that corresponding test cabinet epicoele 15 and test cabinet cavity of resorption 14 are set, in test to not The compressed gas of injection different pressures is to complete to test in same cavity.In addition to this, test cabinet epicoele 15 can ensure not from Electricity is climbed on spark plug top to be measured, and test cabinet cavity of resorption 14 can be used for testing weak ceramic body link, and test cabinet epicoele is arranged 15 pressure are relatively large, can better ensure that the insulation of test cabinet epicoele 15, and the accuracy tested to test cabinet cavity of resorption 14 carries Sufficient guarantee is supplied.

13 preferred high speed camera of imaging device in the present embodiment, high speed camera capture region are annulus, the internal diameter of annulus Centered on electrode diameter, the lowest calibre of the outer diameter of annulus close to spark plug ceramic body to be measured.

Wherein, compressed gas supply module includes first pressure gauge 6, the first PID proportioning valves 5, second pressure gauge 8, second PID proportioning valves 7, gross pressure table 4, air accumulator 3 and air compressor machine 2, first pressure gauge 6 and the first PID proportioning valves 5 successively with test cabinet The connection of epicoele 15 forms the first branch, and second pressure gauge 8 and the 2nd PID proportioning valves 7 connect formation with test cabinet cavity of resorption 14 successively The second branch, the first branch are connect with after the second branch parallel connection with gross pressure table 4, gross pressure table 4 successively with air accumulator 3 and pneumatics 2 signal of machine connect, air compressor machine 2, gross pressure table 4, the first PID proportioning valves 5 and the 2nd PID proportioning valves 7 respectively with control module 16 signals connect.

Being mainly used for of power supply module provides stable DC source for proof voltage test, including is electrically connected with external power supply 1 The AC-DC conversion module 9 and transformer 10 connect, AC-DC conversion module 9 are made of rectification circuit, filter circuit and regulator circuit； External power supply 1 connects AC-DC conversion module 9, and AC-DC conversion module 9 connects transformer 10, and transformer 10 connects control process mould Block；

Control process module includes high-frequency intelligent module 12, coil 11 and control module 16；High-frequency intelligent module 12 includes Triggering and receiving module, processing module and communication module；Triggering and receiving module are connect with power supply module signal, for triggering shape Pulse voltage is obtained at pulse signal, triggering imaging device 13 works, and the feedback of receiving voltage signal and imaging signal； Coil 11 is connect with triggering and receiving module signal, for amplifying pulse voltage, and amplified pulse voltage is loaded on and is waited for It surveys on the screw rod of spark plug；Processing module is for being calculated and being handled to the information received；Communication module will be for that will convert Result be transferred to control module 16 and receive control module 16 feedback result information；Control module 16 is for controlling air compressor machine 2, the opening and closing of the first PID proportioning valves 5, the 2nd PID proportioning valves 7 and high-frequency intelligent module 12.

As a kind of enforceable mode, the utility model further includes report in the device of X -ray inspection X spark plug proof voltage energy Alert module 17, alarm module 17 is connect with processing module and 16 signal of control module respectively, when preliminary determining defects or defect are sentenced It alarms when being set to unqualified, wherein alarm module can be audible-visual annunciator.

As depicted in figs. 1 and 2, the operation principle of the utility model is：By test cabinet epicoele 15, test cabinet cavity of resorption 14 and wait for It surveys spark plug to be fixed by the associated mechanical device of device, then starter, air compressor machine 2 starts to work and to air accumulator 3 Gas supply, until air accumulator 3 reaches preset pressure, gross pressure table 4 is by detecting with feedback pressure signal to control module 16, at this Control module is PLC module in embodiment, and PLC modules 16 start and stop the work of air compressor machine 2 by the variation of pressure at this time Make, make 3 all-the-time stable of air accumulator in a pressure limit, while PLC module 16 starts the first PID proportioning valves 5 and the 2nd PID Proportioning valve 7, the gas in air accumulator 3 are filled to test cabinet epicoele 15 by the first PID proportioning valves 5 and the 2nd PID proportioning valves 7 With test cabinet cavity of resorption 14, the pressure of test cabinet epicoele 15 and test cabinet cavity of resorption 14 passes through first pressure gauge 6 and second pressure gauge 8 The first PID proportioning valves 5 and the 2nd PID proportioning valves 7 are fed back to, the first PID proportioning valves 5 and the 2nd PID proportioning valves 7 flow to adjust Amount control is filled to the gas of test cabinet epicoele 15 and test cabinet cavity of resorption 14, realizes loop control, until 15 He of test cabinet epicoele Test cabinet cavity of resorption 14 reaches the steady pressure of setting, and information is fed back to PLC module 16 by PID proportioning valves 5 and proportioning valve 7 at this time, PLC module 16 controls high-frequency intelligent module 12 at this time, and high-frequency intelligent module 12 is obtained by AC-DC conversion module 9 and transformer 10 Stable DC source was obtained, after PLC module 16 receives enabling signal, high-frequency intelligent module 12 triggers single pulse voltage Start imaging device 13 with triggering, imaging device is high speed camera in the present embodiment, and the pulse voltage of triggering passes through coil 11 Amplification forms a peak value and is the pulse of 38KV, and acts on spark plug screw rod, and real-time reception comes from spark plug screw position Voltage signal and camera feedback photographic intelligence；It is calculated by processing module, processing module is CPU in the present embodiment Result is fed back to PLC modules 16 by module, and if single pulse judgement is unqualified, PLC module 16 will close high-frequency intelligent module 12, while controlling alarm module 17；Such as single pulse qualification, then PLC is again started up triggering and receiving module, starts next arteries and veins Punching, until completing 300 pulses；Then start second step low voltage experiment, PLC module 16 obtains from high-frequency intelligent module 12 After 300 qualifying signals, PLC module 16 controls the first PID proportioning valves 5 and the 2nd PID proportioning valves 7, gentle by PID proportioning valves The circuit of table is pressed, realizes the pressure for reducing test cabinet epicoele 15 and test cabinet cavity of resorption 14, until reaching stable low-pressure setting Value, at this time the first PID proportioning valves 5 and the 2nd PID proportioning valves 7 by the signal transmission after stabilization to PLC module 16, PLC module 16 Start high-frequency intelligent module 12, realizes cycle identical with first step Hi-pot test, but the voltage triggered at this time is that peak value is The pulse voltage of 20KV, second stage have arbitrary single pulse judgement unqualified, and PLC module 16 will close high-frequency intelligent module 12, while controlling alarm module 17；Single pulse judgement is qualified, then PLC is again started up high-frequency intelligent module 12, starts next Cycle, until completing 300 pulses of second stage, PLC module obtains the 300th qualifying signal of second stage, in test Only, the gas of test cabinet epicoele 15 and test cabinet cavity of resorption 14 is exhausted, part is qualified, and the associated mechanical device of device unclamps Test cabinet epicoele 15 and test cabinet cavity of resorption 14, part take out.

The specifically used method of the present apparatus is：

1, ensure that the lateral electrode of spark plug to be measured is non-bending state, by the screw rod end sealed holding of spark plug to be measured in survey Room epicoele 15 is tried, by the central electrode end sealed holding of spark plug to be measured in test cabinet cavity of resorption 14；

2, Hi-pot test：

Peak value is set as the pulse voltage of 38KV, is loaded on spark plug screw rod to be measured；It is filled in test cabinet epicoele 15 The compressed air of 16Bar, the compressed air progress Hi-pot test that 40bar is filled in test cabinet cavity of resorption 14 are carried out at the same time image note Record；

3, preliminary determining defects：

Voltage signal judges：The peak value whether voltage signal reaches the 38KV of requirement, electricity are evaluated by control process module Whether the area that pressure signal is included with time shaft is with sets requirement in ± 3%；If it is not, then voltage signal variation abnormality, depending on It is unqualified；If so, voltage signal is normal decaying, next judgement-image recording judgement is carried out；

Image recording judges：(electrode is straight centered on the internal diameter of annulus for the circle ring area captured by imaging device 13 Diameter, the outer diameter of annulus are slightly less than the outside diameter of the small end surface ceramic body of spark plug ceramic body to be measured), evaluation capture region captures To whether reach the pixel of setting as number, if pixel is up to standard, observes imaging device 13 and whether capture electric spark from center Electrode is released, if it is not, being then considered as unqualified；If so, continuing to treat fire detecting flower fills in row repeatedly cycle high pressure detection, if more In secondary loop detection process once through preliminary determining defects be it is unqualified, then stop subsequent detection, and judge the spark to be measured Plug is unqualified；Only low voltage experiment is carried out again after each cycle detection result is qualification；

4, low voltage experiment

Peak value is set as the pulse voltage of 20KV, is loaded on the spark plug screw rod to be measured through preliminary determining defects qualification； The compressed air of 10Bar is filled in test cabinet epicoele 15, the compressed air that test cabinet cavity of resorption 14 fills 1bar carries out low voltage experiment It is carried out at the same time image recording；

5, determining defects

Voltage signal judges：The peak value whether voltage signal reaches the 20KV of requirement, electricity are evaluated by control process module Whether the area that pressure signal is included with time shaft is with sets requirement in ± 3%；If it is not, then voltage signal variation abnormality, depending on To there is the substandard product of micro- flaw；If so, for the normal attenuation of voltage signal, next judgement-image recording judgement is carried out；

Image recording judges：(electrode is straight centered on the internal diameter of annulus for the circle ring area captured by imaging device 13 Diameter, the outer diameter of annulus are slightly less than the outside diameter of the small end surface ceramic body of spark plug ceramic body to be measured), evaluation capture region captures To whether reach the pixel of setting as number, if pixel is up to standard, whether therefrom observe electric spark that imaging device 13 captures Heart electrode is released, if it is not, being then considered as unqualified；If so, being finally determined as qualified products.

The foregoing is merely specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to This, any one skilled in the art within the technical scope disclosed by the utility model, the variation that can be readily occurred in Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power Subject to the protection domain that profit requires.

Claims (10)

1. a kind of device in X -ray inspection X spark plug proof voltage energy, which is characterized in that including：

Test chamber corresponds to for providing the closed environment for detecting spark plug to be measured at the central electrode of the spark plug to be measured Equipped with imaging device, the imaging device is used to record the discharge condition of the spark plug to be measured；

Compressed gas supply module is connected to the test chamber, for filling compressed gas into the test chamber, ensures test Test pressure in test chamber in the process；

Power supply module is connected with the screw rod of the spark plug to be measured, for providing stable direct current in High-Voltage Testing Process High voltage provides stable DC low-voltage in low voltage experiment；

Control process module, respectively with the imaging device, the compressed gas supply module and the power supply module signal Connection, supplies for controlling the compressed gas supply module to the test chamber, controls the power supply module to described to be measured Spark plug emits pulse voltage, controls the imaging device work, and to be carried out to the spark plug to be measured according to given logical Hi-pot test, low voltage experiment and determining defects.

2. the apparatus according to claim 1, which is characterized in that the test chamber is by test cabinet epicoele and test cabinet cavity of resorption structure It is used to provide sealing detection environment for the spark plug top to be measured equipped with screw rod at, the test cabinet epicoele, under the test cabinet Chamber is used to provide sealing detection environment for the spark plug lower part to be measured equipped with central electrode；The test cabinet cavity of resorption corresponds to described The imaging device is set at central electrode, and the imaging device is tightly connected with the test cabinet cavity of resorption.

3. the apparatus according to claim 1, which is characterized in that the imaging device is high speed camera.

4. device according to any one of claim 1-3, which is characterized in that the imaging device capture region is circle Ring, the internal diameter of the annulus are the diameter of the central electrode, and the outer diameter of the annulus is close to the spark plug ceramic body to be measured Lowest calibre.

5. the apparatus of claim 2, which is characterized in that the compressed gas supply module include first pressure gauge, First PID proportioning valves, second pressure gauge, the 2nd PID proportioning valves, gross pressure table, air accumulator and air compressor machine, the first pressure gauge It connect to form the first branch with the test cabinet epicoele successively with the first PID proportioning valves, the second pressure gauge and described 2nd PID proportioning valves connect to form the second branch with the test cabinet cavity of resorption successively, the first branch and the second branch It is connect with the gross pressure table after parallel connection, the gross pressure table is connect with the air accumulator and the air compressor machine signal successively, institute State air compressor machine, the gross pressure table, the first PID proportioning valves and the 2nd PID proportioning valves respectively at the control Manage module by signal connection.

6. the apparatus according to claim 1, which is characterized in that the control process module includes high-frequency intelligent module, line Circle and control module, the high-frequency intelligent module carry out work and to institute to trigger pulse voltage, the triggering imaging device Control module reception, processing and feedback information, the coil is stated to connect with the high-frequency intelligent module by signal, it is described for amplifying Pulse voltage, and amplified pulse voltage loaded on the screw rod of the spark plug to be measured；The control module is for controlling Make unlatching and the pass of the compressed gas supply module, the power supply module, the high-frequency intelligent module and the coil It closes.

7. device according to claim 6, which is characterized in that the high-frequency intelligent module include triggering and receiving module, Processing module and communication module；

The triggering and receiving module are connect with the power supply module signal, and pulse signal acquisition pulse electricity is formed for triggering Pressure, triggers the imaging device and works, and the feedback of receiving voltage signal and imaging signal；

The processing module is for being calculated and being handled to the information received；

The communication module is used to the result of conversion being transferred to the control module and receives the knot of the control module feedback Fruit information.

8. device according to claim 7, which is characterized in that described device further includes alarm module, the alarm module It connect with the processing module and the control module signal, alarms when testing result is unqualified respectively.

9. device according to claim 7, which is characterized in that the control module is PLC module.

10. device according to claim 7, which is characterized in that the processing module is CPU module.