CN203968379U - Direct press type airtight detecting apparatus - Google Patents
Direct press type airtight detecting apparatus Download PDFInfo
- Publication number
- CN203968379U CN203968379U CN201420430955.6U CN201420430955U CN203968379U CN 203968379 U CN203968379 U CN 203968379U CN 201420430955 U CN201420430955 U CN 201420430955U CN 203968379 U CN203968379 U CN 203968379U
- Authority
- CN
- China
- Prior art keywords
- gas tank
- embedded system
- baroceptor
- pressure
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a kind of direct press type airtight detecting apparatus, comprising: high pressure filter; The pressure regulating valve being connected with described high pressure filter gas circuit; The charge valve being connected with described pressure regulating valve gas circuit; With the gas tank that described charge valve gas circuit is connected, described gas tank inside is provided with baroceptor, and described gas tank can gas circuit be connected to tested product; Embedded system, is electrically connected to described charge valve and described baroceptor respectively; Wherein, described baroceptor sends the force value collecting to described embedded system; And described embedded system comprises in aeration phase, when force value that described baroceptor collects being detected and reach the blowing pressure threshold value of setting, control the ventilating control module of turn-offing described charge valve.Direct press type airtight detecting apparatus of the present utility model is simple in structure, easy to operate and airtight detection accuracy is high.
Description
Technical field
The utility model relates to air-tightness detection technique field, more specifically, relates to a kind of detection such as microphone and with sound film or loudspeaker, uses the direct press type airtight detecting apparatus of the products such as sound film.
Background technology
Existing air tightness detection equipment generally includes differential pressure type airtight detecting apparatus and direct press type airtight detecting apparatus.Differential pressure type airtight detecting apparatus general structure is complicated.And direct press type airtight detecting apparatus, as the disclosed technical scheme of application number 201120338784.0 patent documentation, it comprises high pressure filter, precise pressure regulating valve is connected with high pressure filter, and electronic pressure gage is connected with precise pressure regulating valve, external pilot 3 position-5 way electromagnetically operated valve is connected with electronic pressure gage with precise pressure regulating valve respectively, electromagnetically operated valve and high-precision pressure sensor are connected to tested product.In work, precise pressure regulating valve is to charge air conditioning pressure regulation according to the tested product the blowing pressure of setting, electronic pressure gage is measured the gas pressure after accurate voltage regulating valve regulation, this precise pressure regulating valve is combined to provide the mode complex structure of the blowing pressure with electronic pressure gage, and while needing to change test pressure when tested product replacing, need manual adjustments precise pressure regulating valve.In addition, precise pressure regulating valve is long-term to be used as deviation occurs and cannot automatically repair, and can only manually recover according to electronic pressure gage.
In prior art, gas leakage detects and gas permeability detection adopts respectively independent equipment to carry out.Existing gas leakage checkout equipment, because range is little, can only detect the gas leakage of tested product, cannot detect the gas permeability of tested product; And the equipment that detects of gas permeability has also been difficult to take the gas leakage that small pressure change is index and has detected.
And existing air tightness detection equipment requires Measurement accuracy gas tank air pressure inside, and gas tank internal volume is had to requirement, while causing design gas tank and installation of sensors, gas tank is often designed to two lid formulas, together with two lids being screwed in screw by encapsulant.This mode cost is high, has the risk from leaking gas between Liang Gai, and requires high to process materials; And transducer puts into gas tank inside, when maintenance maintenance, need to take apart gas tank, workload is large, technical difficulty is high.But installation of sensors is outside and while being connected with gas tank by gas circuit at gas tank, owing to having increased gas circuit, make transducer and gas tank inside have thin channel, cause air pressure inside long stabilization time.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of simple in structure, easy to operate and direct press type airtight detecting apparatus that airtight detection accuracy is high.
According to a kind of direct press type airtight detecting apparatus of the present utility model, comprising:
High pressure filter;
The pressure regulating valve being connected with described high pressure filter gas circuit;
The charge valve being connected with described pressure regulating valve gas circuit;
With the gas tank that described charge valve gas circuit is connected, described gas tank inside is provided with baroceptor, and described gas tank can gas circuit be connected to tested product;
Embedded system, is electrically connected to described charge valve and described baroceptor respectively;
Wherein, described baroceptor sends the force value collecting to described embedded system; And, described embedded system comprises in aeration phase, when force value that described baroceptor collects being detected and reach the blowing pressure threshold value of setting, control and turn-off described charge valve, thereby make described embedded system can carry out the ventilating control module of corresponding airtight detection at follow-up equilibrium stage and/or detection-phase.
Alternatively, described checkout equipment also comprises: be arranged on the first speed regulator between described pressure regulating valve and described charge valve, described the first speed regulator is connected with described charge valve gas circuit with described pressure regulating valve respectively.
Alternatively, described checkout equipment also comprises: the vent valve being connected with described gas tank gas circuit; Be arranged on the second speed regulator between described gas tank and described vent valve, described the second speed regulator is connected with described vent valve gas circuit with described gas tank respectively; And described embedded system is electrically connected to described vent valve.
Alternatively, described embedded system at detection-phase according to the detection of can leaking gas of the gas leakage detecting pattern arranging and gas leakage detected parameters.Alternatively, described embedded system at detection-phase according to the detection of can also breathing freely of the ventilative detecting pattern arranging and ventilative detected parameters.For example, embedded system can realize above-mentioned functions by gas leakage detection module and ventilative detection module.
Alternatively, described gas tank comprises:
The hollow housing of one end opening, on the inwall side face of described opening, be provided with the first threaded area, described hollow housing is provided with the inflation inlet that is connected use with described charge valve gas circuit, is connected the exhaust outlet of use with described vent valve gas circuit, and connects the air-path interface that described tested product are used;
The seal nipple with groove, on at least a portion outer peripheral face of described seal nipple, be provided with the second threaded area, described seal nipple is arranged in described opening and described the second threaded area and described the first threaded area engagement, in the groove of described seal nipple, embedding has epoxide resin material, and in described epoxide resin material, is furnished with mutually insulated and through described groove and extend to the wire of described hollow housing inside; And,
The printing board PCB of described baroceptor is installed, and it is inner that described PCB is arranged on described hollow housing, and be welded on described wire.
Alternatively, the inflation inlet of described gas tank and described exhaust outlet are same air-path interface.
Alternatively, described checkout equipment is for detecting the bubble-tight equipment of sound film for microphone sound film or loudspeaker.
Alternatively, described embedded system also comprises: keyboard; LCD MODULE; And in order to access the external interface of automation or equipment or PC.
Airtight detecting apparatus of the present utility model, than prior art, has omitted the electronic pressure gage of measuring the bleed pressure value after pressure regulating valve, simple in structure; And use embedded system and the baroceptor that gas tank inside is set can control more accurately the gas replenishment process of gas tank.In addition, adopt embedded system, pressure threshold can be set easily, therefore, when tested product are changed, reset pressure threshold, simple to operation, need not manual adjustments pressure regulating valve.In addition, for tested product, be the products such as sound film for microphone sound film or loudspeaker, owing to detecting in the bubble-tight airtight detecting apparatus of this series products, use the internal volume of gas tank minimum, be filled with accurately pressure and be not easy, and it is very responsive to the error of air pressure.Therefore the gas replenishment process of, accurately controlling gas tank can improve the airtight detection performance of this checkout equipment greatly.
Accompanying drawing explanation
Fig. 1 is according to the principle schematic of the airtight detecting apparatus of an execution mode.
Fig. 2 is the structural representation of the gas tank in airtight detecting apparatus.
Fig. 3 is the structural representation block diagram of an embodiment of the embedded system in airtight detecting apparatus.
Fig. 4 is the structural representation block diagram of another embodiment of the embedded system in airtight detecting apparatus.
Fig. 5 carries out the method flow schematic diagram of airtight detection according to the airtight detecting apparatus of use Fig. 1 of an execution mode.
Fig. 6 carries out the method flow schematic diagram of airtight detection according to the airtight detecting apparatus of use Fig. 1 of another execution mode.
Embodiment
Below in conjunction with accompanying drawing, the utility model execution mode is further described.
Fig. 1 is according to the principle schematic of the airtight detecting apparatus of the utility model one execution mode.As shown in Figure 1, filter 1 gas circuit is connected to pressure regulating valve 2, and pressure regulating valve 2 gas circuits are connected to the first speed regulator 3, the first speed regulator 3 gas circuits and are connected to charge valve 4, and charge valve 4 gas circuits are connected to gas tank 7, and gas tank 7 gas circuits are connected to tested product.Baroceptor 8 is arranged on gas tank 7 inside, to gather the air pressure of gas tank inside.Gas tank 8 is also connected with the second speed regulator 5 gas circuits, and the second speed regulator 5 is connected with vent valve 6 gas circuits, and vent valve 6 is connected with the exhaust outlet gas circuit of airtight detecting apparatus.Baroceptor 8 is electrically connected to embedded system, and alternatively, baroceptor 8 can be to be electrically connected to embedded system 9 by wire, and embedded system 9 is also electrically connected to charge valve 4 and vent valve 6.Embedded system can be provided with external interface, to access automation equipment and PC.Embedded system can comprise keyboard, LCD MODULE and control circuit.
After tested product access, in aeration phase, vent valve 6 is closed, and charge valve is opened and started inflation.Particularly, pneumatic supply, after high pressure filter 1, enters into pressure regulating valve 2 pneumatic supply is transferred to suitable force value.Source of the gas after pressure regulation to charge valve 4, then arrives gas tank 7 through charge valve 4 through the first speed regulator 3.Embedded system 9 constantly reads the force value of gas tank 7 inside by baroceptor, when the air pressure of gas tank 7 inside reaches the pressure threshold of setting, control and turn-off charge valve, stops inflation.Like this, thus embedded system can carry out at follow-up equilibrium stage and/or detection-phase the air-tightness that corresponding airtight detection detects tested product.For example, at equilibrium stage, according to the air pressure change of gas tank and the parameter setting in advance, determine whether tested product exist leakage; Or, at detection-phase, according to the air pressure change of gas tank and the parameter setting in advance, determine whether tested product exist leakage.
As shown in Figure 3, embedded system comprises ventilating control module 92, in aeration phase, when force value that described baroceptor collects being detected and reach the blowing pressure threshold value of setting, controls and turn-offs described charge valve.
Airtight detecting apparatus of the present utility model is than prior art, omit the electronic pressure gage of measuring the bleed pressure value after pressure regulating valve, and used embedded system and the baroceptor that gas tank inside is set can control more accurately the gas replenishment process of gas tank.Because tested product are the products such as sound film for microphone sound film or loudspeaker, for detection of using the internal volume of gas tank minimum in the bubble-tight airtight detecting apparatus of this series products, be filled with accurately pressure and be not easy, and it is very responsive to the error of air pressure.Therefore the gas replenishment process of, accurately controlling gas tank can improve the detection performance of airtight detecting apparatus greatly.In addition, for embedded system, pressure threshold can be set easily, therefore, when tested product are changed, reset pressure threshold, need not manual adjustments pressure regulating valve.
The first speed regulator 3 and the gas circuit that gas circuit is connected between pressure regulating valve 2 and charge valve 4 has been shown in Fig. 1 and has been connected to the second speed regulator 5 between gas tank 7 and vent valve 6.Yet those skilled in the art can understand in execution modes more of the present utility model, the first speed regulator 3 and/or the second speed regulator 5 can omit.The object that connected the first speed regulator 3 before charge valve 4 is to reduce aeration speed, thereby extends inflationtime.This is because the internal volume of gas tank is very little, and proper extension inflationtime can allow the control of embedded system make the air pressure of gas tank inside reach more accurately predetermined force value.Due to the contradiction between inflation accuracy and aeration speed, existing technology adopts first fast aeration, in the time of will reaching required pressure, closes fast aeration, the mode of inflating to be at a slow speed to improve inflation accuracy, yet existing this mode complex structure, cost are high.For exhaust, due to gas fast discharge meeting tested product are had to certain percussion, cause tested product easily to damage, the second speed regulator 5 was set before vent valve 6 and can reduces exhaust velocity, thereby tested product are played a protective role.
In the present embodiment, after aeration phase finishes, enter equilibrium stage, embedded system 9 comprises balance detection module 94.Balance detection module 94 is when equilibrium stage starts, and the force value that when aeration phase is finished, baroceptor 8 collects is got and made first reference value.Balance detection module 94 also when equilibrium stage finishes, is calculated force value that baroceptor collects when equilibrium stage finishes and the pressure difference value between first reference value; And detect the balance detection threshold value whether this pressure difference value surpasses setting, and if detected, be yes, judge the large gas leakage of tested product, control is opened vent valve 6 and is entered exhaust phase.If balance detection module 93 detects pressure difference value, do not surpass the balance detection threshold value of setting, automatically enter detection-phase.
According to product, detect demand (for example some product detects gas leakage property, and some product detects gas permeability), air pressure checkout equipment enters corresponding detecting pattern.
Alternatively, embedded system 9 comprises gas leakage detection module 96.Gas leakage detection module 96 is under gas leakage detecting pattern, the force value that baroceptor 8 collects when equilibrium stage finishes is as the second fiducial value, the force value that calculating predetermined time section internal gas pressure transducer collects and the pressure difference value of the second fiducial value, and detect described pressure difference value and whether surpass the gas leakage detection threshold of setting, if it is yes detecting, judge tested product gas leakage, control is opened vent valve and is entered exhaust phase; If it is no detecting, judge that tested product are qualified.
Alternatively, described embedded system comprises ventilative detection module 98.Ventilative detection module 98 is under ventilative detecting pattern, the force value that baroceptor 8 collects when equilibrium stage finishes is as the second fiducial value, the force value that calculating predetermined time section internal gas pressure transducer collects and the pressure difference value of the second fiducial value, and detect described pressure difference value and whether in second of the first ventilative detection threshold A setting and setting, breathe freely between detection threshold B.Wherein, the second ventilative detection threshold is greater than the first ventilative detection threshold, and the first ventilative detection threshold is lower limit, and the second ventilative detection threshold is higher limit.If ventilative detection module 98 detects as change value of pressure is less than the first ventilative detection threshold, judge that described tested product do not leak extremely, and control and open vent valve 6, enter exhaust phase.If ventilative detection module 98 detects as change value of pressure is greater than the second ventilative detection threshold, judge that tested product superleak is abnormal, and control and open vent valve 6, enter exhaust phase.If ventilative detection module 98 detects as change value of pressure is between the first ventilative detection threshold and the second ventilative detection threshold, judge that tested product are qualified.
Fig. 2 shows the structural representation of an embodiment of the gas tank using in the airtight detecting apparatus in Fig. 1.As shown in Figure 2, gas tank 7 is integral type gas tank, comprises hollow housing 10, and one end of hollow housing 10 has opening, and relative one end is provided with the interface 12 that gas circuit connects tested product.Hollow housing 10 is also provided with inflation inlet 14 and exhaust outlet 16.The inner circumferential side wall of the opening of hollow housing 10 is provided with the first threaded area.
This gas tank also comprises seal nipple 28, on at least a portion outer peripheral face of sealing joint 28, be provided with the second threaded area, so that at least a portion of seal nipple 28 can be installed to open interior (threaded area going out as shown in the reference numeral 24) by screwing, wherein the first threaded area and the engagement of the second threaded area.As shown in Figure 1, on the outer peripheral face of seal nipple 28 one end, be provided with screw thread.Alternatively, can be to be also provided with screw thread on whole outer peripheral faces of seal nipple 28.
Seal nipple 28 is provided with a groove, can filling epoxy resin material 26 in groove, in order to guarantee the sealing of seal nipple, can adopt the mode filling epoxy resin material of embedding.During embedding, put into the some wires 34 that extend through groove.Wire 34 can be the required wire of transducer 32, and it can be selected simple metal line and avoid contacting with each other or using enamelled wire.
Baroceptor 32 is arranged on small-sized or micro-printed circuit board PCB30 upper, and PCB30 can directly be welded on wire 34.If what wire was selected is metal or the enamelled wire with sufficient intensity, can directly transducer be played a supportive role, without extra fixing.
Particularly, in seal nipple 28, after encapsulated epoxy resin material, the PCB30 that baroceptor 32 is installed is welded on the wire 34 being arranged in epoxide resin material 26.Then, the seal nipple with baroceptor 32 is directly screwed on gas tank, completes installation, simple in structure, easy to operate.And, when carrying out maintenance maintenance, also just from the gas tank seal nipple of outwarding winding, just can.
Alternatively, seal nipple can be to adopt commercially available standard pipe seal nipple.As long as the sealing ring of seal nipple inside is taken down, just can carry out epoxy resin encapsulated.Owing to adopting standard component, so gas tank gas leakage risk diminishes, technological requirement reduced, and cost has also reduced.With common epoxide resin material, carrying out embedding also can further reduce costs.
It should be noted that, the position of the interface 12 shown in Fig. 2, inflation inlet 14 and exhaust outlet 16 is only that schematically those skilled in the art can understand other positions that interface 12, inflation inlet 14 and exhaust outlet 16 also can be arranged on housing 10.Alternatively, inflation inlet and exhaust outlet can be identical interfaces, must not arrange separately.
Inventor also finds, the electromagnetically operated valve (such as charge valve and vent valve etc.) in application airtight detecting apparatus can be in closing motion moment, and the variation of life period and valve internal structure, causes gas tank internal pressure to change.By baroceptor, be read as setting pressure P
thtime, though control and close charge valve rapidly, after stable, air pressure P can depart from the force value of setting, and bias is Δ P.
For the problems referred to above, inventor has proposed another execution mode of airtight detecting apparatus.In this embodiment, as shown in Figure 4, embedded system, except comprising ventilating control module 92, balance detection module 94, gas leakage detection module 96 and ventilative detection module 98, also comprises for determining the compensating module 91 of the atmospheric pressure compensating value of aeration phase.
In this embodiment, compensating module 91 is for realizing following functions: obtain N the blowing pressure value that baroceptor collects when top n aeration phase finishes; Obtain N the equalizing pressure value that baroceptor collects when top n equilibrium stage finishes; And, according to following formula calculating pressure offset Δ P:
Wherein, P
fill(i) the blowing pressure value when i aeration phase of expression finishes, P
bal(i) equalizing pressure value when i equilibrium stage of expression finishes, 1≤i≤N.But the value of N is according to design requirement any integer value.
Ventilating control module 92 is also for determining new the blowing pressure threshold value: P according to the blowing pressure threshold value of pressure compensation value Δ P and storage
newth=P
oldth-Δ P, wherein, P
oldththe blowing pressure threshold value for initial setting.
Like this, though air pressure at balance and stability during the stage, can there is certain deviation in the force value when force value of air pressure finished with respect to the stage of filling up, but due to by this deviation of compensation, make stable after the air pressure of gas tank inside can reach the force value of expectation.
Describe airtight detecting apparatus below in detail and determine an example of atmospheric pressure compensating value.
When airtight detecting apparatus work starts, first standard qualified products are connected with gas tank 7 gas circuits.Inflation, is made as 0 by atmospheric pressure compensating value Δ P first, is inflated to air pressure P
fill=P
th-0 o'clock, embedded system was controlled and is closed charge valve.Inflating the force value recording after complete natural stability is P
bal, offset value calculation is: Δ P=P
bal-P
fill=P
bal-P
th.
While again inflating after gas is emptying, embedded system is P pressure being detected
th-Δ P time control stop is inflation only.Like this, the pressure after natural stability is P
th-Δ P+ Δ P=P
th, that is, can meet the requirement of the setting pressure of tested product.
For example, if be charged to when pressure is 10Kpa, stop inflation, the pressure after natural stability is 11Kpa, is charged to that next time when pressure is 9Kpa and stops, and the pressure after natural stability is 10Kpa.
By determining that the mode of offset can overcome the problem that gas tank air pressure after natural stability departs from setup pressure value.And because gas tank is when accessing different tested product, actual content amasss as gas tank+gas circuit+tested product internal volume, therefore need the internal volume of inflation to change with product variations, cause offset Δ P also can change, therefore, cannot dispatch from the factory and pre-set this offset.Airtight detecting apparatus of the present utility model can be according to the concrete corresponding offset of tested product Lookup protocol by embedded system, thereby improves the accuracy detecting.
Alternatively, for further obtaining offset more accurately, the utility model determines that the mode of atmospheric pressure compensating value can also be in whole test process, and the offset of each test is all front N test statistics gained.
For example, for the setting pressure of aeration phase, under the prerequisite that is 0 in atmospheric pressure compensating value, carry out gas replenishment process 5 times, the blowing pressure value in the time of correspondingly can obtaining 5 aeration phase and finish, and the equalizing pressure value of the equilibrium stage after aeration phase while finishing.Like this, can be according to formula Δ P=P
bal-P
fillcalculate 5 offset Δ P
1, Δ P
2, Δ P
3, Δ P
4with Δ P
5, then these 5 offsets being averaging, resulting mean value is last definite offset.By the mode of repeatedly testing, can obtain pressure compensation value more accurately, thereby improve the accuracy detecting.
In execution mode of the present utility model, the definite test result of aforementioned embedded system (such as judging tested product gas leakage or qualified etc.) can be passed through the reports such as sound, LED lamp, LCD LCDs, or the external interface by embedded system is connected on PC and shows.
Correspondingly, the utility model also provides the method for using airtight detecting apparatus of the present utility model to carry out airtight detection.
Fig. 5 is the method flow diagram that carries out airtight detection according to the airtight detecting apparatus of use Fig. 1 of the utility model one embodiment.As shown in Figure 5, the method comprises:
S501, in aeration phase, when embedded system detects force value that baroceptor collects and reaches the blowing pressure threshold value of setting, controls and turn-offs described charge valve.
S502, at equilibrium stage, whether the force value that embedded system detection baroceptor collects surpasses with respect to the change value of pressure of first reference value the balance detection threshold value of setting.Wherein, described first reference value is the aeration phase force value that baroceptor collects while finishing.
If it be yes detecting, perform step S503, judge the large gas leakage of described tested product, and control is opened described vent valve and is carried out exhaust.
If it is no detecting, perform step S504, under gas leakage detecting pattern, whether the force value that embedded system detection baroceptor collects surpasses with respect to the change value of pressure of the second fiducial value the gas leakage detection threshold of setting.Wherein, described the second fiducial value be described equilibrium stage while finishing described in the force value that collects of baroceptor.
If it be yes detecting, perform step S505, judge described tested product gas leakage, and control is opened described vent valve and is carried out exhaust.If it is no detecting, perform step S506, judge that described tested product are qualified.
Fig. 6 is the method flow diagram that carries out airtight detection according to the airtight detecting apparatus of use Fig. 1 of another embodiment of the utility model.As shown in Figure 5, the method comprises:
S601, in aeration phase, when embedded system detects force value that baroceptor collects and reaches the blowing pressure threshold value of setting, controls and turn-offs described charge valve.
S602, at equilibrium stage, whether the force value that embedded system detection baroceptor collects surpasses with respect to the change value of pressure of first reference value the balance detection threshold value of setting.Wherein, described first reference value is the aeration phase force value that baroceptor collects while finishing.
If it be yes detecting, perform step S603, judge the large gas leakage of tested product, and control is opened vent valve and is carried out exhaust.
If it is no detecting, perform step S604, under ventilative detecting pattern, whether the force value that embedded detection system detection baroceptor collects is greater than the first ventilative detection threshold of setting with respect to the change value of pressure of the second fiducial value.Wherein, the second fiducial value is the equilibrium stage force value that baroceptor collects while finishing.
If it be no detecting, perform step S605, judge that tested product do not leak extremely, and control is opened vent valve and is carried out exhaust.If it is yes detecting, perform step S606, embedded detection system continues to detect above-mentioned change value of pressure and whether is less than the second ventilative detection threshold.If it be no detecting, perform step S607, judge that described tested product superleak is abnormal, and control is opened described vent valve and is carried out exhaust.If it is yes detecting, perform step S608, judge that tested product are qualified.
Alternatively, before above-mentioned airtight detection method also can be included in step S501 or S601, determine the atmospheric pressure compensating value of aeration phase, and determine new the blowing pressure threshold value according to the blowing pressure threshold value and the air pressure offset set.Specifically can, referring to herein above about the description of compensating module 91 and ventilating control module 92, not repeat them here.
Although the utility model allows many multi-form embodiment, specification and accompanying drawing are only described several possible embodiment of the present utility model in detail.It will be appreciated that, the disclosure should be regarded as the illustration to the utility model principle, is not the utility model to be restricted in the scope of exemplified embodiment.In the situation that not departing from spirit of the present utility model, those skilled in the art can expect many distortion, and protection range of the present utility model should be determined by the content of appended claims.
Claims (7)
1. a direct press type airtight detecting apparatus, comprising:
High pressure filter;
The pressure regulating valve being connected with described high pressure filter gas circuit;
The charge valve being connected with described pressure regulating valve gas circuit;
With the gas tank that described charge valve gas circuit is connected, described gas tank inside is provided with baroceptor, and described gas tank can gas circuit be connected to tested product;
Embedded system, is electrically connected to described charge valve and described baroceptor respectively;
Wherein, described baroceptor sends the force value collecting to described embedded system; And, described embedded system comprises in aeration phase, when force value that described baroceptor collects being detected and reach the blowing pressure threshold value of setting, control and turn-off described charge valve, thereby make described embedded system can carry out the ventilating control module of corresponding airtight detection at follow-up equilibrium stage and/or detection-phase.
2. checkout equipment according to claim 1, is characterized in that, described checkout equipment also comprises: be arranged on the first speed regulator between described pressure regulating valve and described charge valve, described the first speed regulator is connected with described charge valve gas circuit with described pressure regulating valve respectively.
3. checkout equipment according to claim 2, is characterized in that, described checkout equipment also comprises:
The vent valve being connected with described gas tank gas circuit;
Be arranged on the second speed regulator between described gas tank and described vent valve, described the second speed regulator is connected with described vent valve gas circuit with described gas tank respectively; And,
Described embedded system is electrically connected to described vent valve.
4. checkout equipment according to claim 1, is characterized in that, described gas tank comprises:
The hollow housing of one end opening, on the inwall side face of described opening, be provided with the first threaded area, described hollow housing is provided with the inflation inlet that is connected use with described charge valve gas circuit, is connected the exhaust outlet of use with described vent valve gas circuit, and connects the air-path interface that described tested product are used;
The seal nipple with groove, on at least a portion outer peripheral face of described seal nipple, be provided with the second threaded area, described seal nipple is arranged in described opening and described the second threaded area and described the first threaded area engagement, in the groove of described seal nipple, embedding has epoxide resin material, and in described epoxide resin material, is furnished with mutually insulated and through described groove and extend to the wire of described hollow housing inside; And,
The printing board PCB of described baroceptor is installed, and it is inner that described PCB is arranged on described hollow housing, and be welded on described wire.
5. checkout equipment according to claim 4, is characterized in that, the inflation inlet of described gas tank and described exhaust outlet are same air-path interface.
6. according to the checkout equipment described in claim 1 to 5 any one, it is characterized in that, described checkout equipment is for detecting the bubble-tight equipment of sound film for microphone sound film or loudspeaker.
7. checkout equipment according to claim 1, is characterized in that, described embedded system also comprises: keyboard; LCD MODULE; And in order to access the external interface of automation or equipment or PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430955.6U CN203968379U (en) | 2014-07-31 | 2014-07-31 | Direct press type airtight detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430955.6U CN203968379U (en) | 2014-07-31 | 2014-07-31 | Direct press type airtight detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203968379U true CN203968379U (en) | 2014-11-26 |
Family
ID=51928916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420430955.6U Active CN203968379U (en) | 2014-07-31 | 2014-07-31 | Direct press type airtight detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203968379U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068143A (en) * | 2015-08-07 | 2015-11-18 | 青岛德盛机械制造有限公司 | Oil-way circulation detection device |
| CN106768733A (en) * | 2017-02-25 | 2017-05-31 | 中山市金广家庭电器制造有限公司 | A kind of box body tightness detection device |
| CN110160555A (en) * | 2019-05-17 | 2019-08-23 | 陕西飞机工业（集团）有限公司 | A kind of aircraft differential pressure pickup detection device |
-
2014
- 2014-07-31 CN CN201420430955.6U patent/CN203968379U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068143A (en) * | 2015-08-07 | 2015-11-18 | 青岛德盛机械制造有限公司 | Oil-way circulation detection device |
| CN106768733A (en) * | 2017-02-25 | 2017-05-31 | 中山市金广家庭电器制造有限公司 | A kind of box body tightness detection device |
| CN110160555A (en) * | 2019-05-17 | 2019-08-23 | 陕西飞机工业（集团）有限公司 | A kind of aircraft differential pressure pickup detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104135706A (en) | A direct pressure type gas tightness detection device and a gas tightness detection method | |
| CN203365087U (en) | Differential pressure type airtight leak detection instrument calibration device | |
| CN105606318B (en) | A kind of calibration method of airtight leak detector | |
| CN104266803A (en) | Airtight detecting system and method | |
| CN202994396U (en) | Air tightness detection device for air-tight door of nuclear power station under constant pressure | |
| CN104266805B (en) | Constant-voltage method detection nuclear power station gas-tight door bubble-tight detection device and detection method thereof | |
| CN103791985B (en) | Static mark side's calibrating installation and calibration steps thereof | |
| CN203968379U (en) | Direct press type airtight detecting apparatus | |
| CN207610828U (en) | Portable door and window leakproofness field detecting device | |
| US20100132813A1 (en) | Valve leakby diagnostics | |
| CN102980616B (en) | System for accurately measuring flow of engine nozzle | |
| CN101799351A (en) | Leakage detection method and system thereof | |
| CN105157781A (en) | Device and method for automatically measuring volume of clean tank | |
| CN104535279A (en) | Novel waterproof and dustproof level dry detection method and device | |
| CN206945098U (en) | A kind of Coriolis mass flowmeter calibration system | |
| CN102692301A (en) | Air tightness detecting device for pressure regulators | |
| TWI711809B (en) | Pressing module with calibration function and method of calibrating downward force | |
| CN108663169A (en) | Airtight detecting apparatus and method | |
| CN204064558U (en) | Airtight detecting apparatus gas tank | |
| CN102072802B (en) | Intelligent constant-voltage high-precision leak detector | |
| CN210089813U (en) | Simple and easy calibrating device of vapour-pressure type level gauge | |
| CN206146608U (en) | Packing box seal tightness test device | |
| CN107152992A (en) | The package seal checker and hermetization testing method of electronic installation | |
| CN202101677U (en) | Comprehensive calibrator for atmosphere data | |
| CN104502039A (en) | Gas tightness detecting method for fuel gas meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |