CN211877319U - New forms of energy EV relay test fixture - Google Patents
New forms of energy EV relay test fixture Download PDFInfo
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- CN211877319U CN211877319U CN201922488515.1U CN201922488515U CN211877319U CN 211877319 U CN211877319 U CN 211877319U CN 201922488515 U CN201922488515 U CN 201922488515U CN 211877319 U CN211877319 U CN 211877319U
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Abstract
The utility model discloses a new forms of energy EV relay test fixture belongs to helium mass spectrometer leak detector technical field, include the airtight detection cavity of compriseing last mould and lower mould concatenation, placed the EV relay in this cavity, wherein go up the top connection lift push pedal of mould, the lift push pedal is controlled by the cylinder, the inside of going up the mould is equipped with the jet-propelled passageway that is used for spraying the helium, the one end and the airtight detection cavity intercommunication of jet-propelled passageway, the other end and outside helium container pipe connection, the bottom of lower mould is equipped with the air bleed passageway, the top and the airtight detection cavity intercommunication of air bleed passageway, the other end passes through exhaust tube and outside leak detector interface pipe connection, the top of lower mould still is equipped with protruding recess and is used for fixing the EV relay. Mould and lower mould compress tightly through the cylinder drive and form airtight detection cavity, convenient operation just is convenient for get by getting of detection piece EV relay and puts, controls accurate spraying of helium by micro flow controller and can practice thrift the helium.
Description
Technical Field
The utility model relates to a helium mass spectrometer leak detector technical field, in particular to new forms of energy EV relay test fixture.
Background
Helium mass spectrometer leak detectors are the term of gas industry, mass spectrometers that leak are tested using helium or hydrogen as the leak indicator gas and a gas analyzer to detect helium. The helium has low background noise and small molecular weight and viscosity coefficient, so the helium is easy to pass through the leak hole and diffuse; in addition, since helium is an inert gas and does not corrode equipment, helium is often used as a leak gas. The gas is sprayed to a detected container connected with a gas analyzer (adjusted to a working state only reacting with helium), if the container has a leak hole, the analyzer reacts to some extent, so that the location of the leak hole and the size of the leak gas can be known.
The existing method is to directly place an EV relay (detected piece) sealing surface in a closed container, evacuate the closed container by an instrument, automatically seal the detected piece by utilizing the internal and external pressure difference, achieve the leak detection condition, then manually spray a detection gas (helium) mode, spray helium to a welding position, realize leak detection, the traditional closed container is complex after operation when being disassembled, the tightness of a closed cavity cannot be ensured, the detected piece in the interior is not convenient to be quickly taken and placed, the leak detection efficiency is also reduced, in addition, the helium is sprayed by manual operation, larger errors exist, helium waste is easily caused, the detection cost is increased, the leak detection can be seriously caused, and the product quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at just in order to solve the complicated inconvenient EV relay test fixture of getting of above-mentioned EV relay test fixture operation and put the EV relay, the leakproofness is not strong and the helium leads to the fact extravagant problem easily and provides a new forms of energy EV relay test fixture, has easy operation, is convenient for get by the test piece and puts, and the strict control helium flow practices thrift the cost and detects the stronger advantage of the leakproofness of cavity.
The utility model discloses a following technical scheme realizes above-mentioned purpose, a new forms of energy EV relay test fixture, include the airtight detection cavity of compriseing last mould and lower mould concatenation, placed the EV relay in this cavity, wherein go up the top connection lift push pedal of mould, the lift push pedal is controlled by the cylinder, the inside of going up the mould is equipped with the jet-propelled passageway that is used for spraying the helium, the one end and the airtight detection cavity intercommunication of jet-propelled passageway, the other end and outside helium container pipe connection, the bottom of lower mould is equipped with bleed-off passage, bleed-off passage's top and airtight detection cavity intercommunication, the other end passes through exhaust tube and outside leak detector interface pipe connection, the top of lower mould still is equipped with protruding recess and is used for fixing the EV relay.
Preferably, the splicing part of the upper die and the lower die is provided with a sealing gasket, the middle part of the sealing gasket is provided with a fixing hole, and the sealing gasket is sleeved on the outer wall of the protruding groove through the fixing hole.
Preferably, the upper surface of the sealing washer is provided with a wedge-shaped groove of an annular structure with the fixed hole as a circle center, the bottom of the upper die is provided with a wedge-shaped projection, and the wedge-shaped projection is matched with the wedge-shaped groove.
Preferably, a pneumatic valve is arranged on the cylinder, and the pneumatic valve controls the cylinder to drive the lifting push plate to lift.
Preferably, a micro-flow controller is arranged at the connection position of the gas injection channel and the helium container and used for controlling the flow of helium entering the closed detection cavity.
Compared with the prior art, the beneficial effects of the utility model are that:
1. mould and lower mould compress tightly through the cylinder drive and form airtight detection cavity, convenient operation just is convenient for get by getting of detection piece EV relay and puts, controls accurate the spraying of helium by micro flow controller and can practice thrift the helium, has also improved leak hunting stability of leak hunting device.
2. Through set up seal ring in last mould and lower mould concatenation department, the upper surface of seal ring agrees with through the wedge-shaped recess and the wedge-shaped lug of last mould bottom, is pushed down seal ring and lower mould surface indirect contact by last mould, has improved the seal that detects the cavity greatly.
Drawings
Fig. 1 is a front sectional view of the overall structure of the present invention.
Fig. 2 is a schematic view of the connection structure of the upper die and the sealing washer of the present invention.
Fig. 3 is a schematic structural view of the sealing gasket of the present invention.
In the figure: 1. go up mould, 2, lower mould, 3, EV relay, 4, protruding recess, 5, bleed passage, 6, exhaust tube, 7, seal ring, 8, jet-propelled passageway, 9, micro flow controller, 10, cylinder, 11, lift push pedal, 12, pneumatic valve, 13, wedge lug, 14, wedge recess, 15, fixed orifices.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, a new energy EV relay test fixture comprises a sealed detection cavity formed by splicing an upper die 1 and a lower die 2, an EV relay 3 is placed in the cavity, wherein the top of the upper die 1 is connected with a lifting push plate 11, the lifting push plate 11 is controlled by an air cylinder 10, an air injection channel 8 for injecting helium is arranged inside the upper die 1, one end of the air injection channel 8 is communicated with the sealed detection cavity, the other end of the air injection channel is connected with an external helium container pipeline, the bottom of the lower die 2 is provided with an air exhaust channel 5, the top end of the air exhaust channel 5 is communicated with the sealed detection cavity, the other end of the air exhaust channel is connected with an external leak detector interface pipeline through an air exhaust pipe 6, the top of the lower die 2 is further provided with a convex groove 4 for fixing the EV relay 3, the detection cavity is formed by splicing the upper die 1 and, it can realize opening and closing of detection cavity only to need the control of cylinder 10 to go up mould 1 and go up and down, EV relay 3 inverts behind protruding recess 4 at 2 tops of lower mould, mould 1 pushes down laminating lower mould 2 and forms a container cavity around EV relay 3 in the drive of control cylinder 10, the external vacuum apparatus of rethread is bled along pumping channel 5 and is vacuumed into this cavity, spray the helium through jet-propelled passageway 8, thereby detect whether there is the gap by the leak detector EV relay 3, the operation is simple, and efficient.
The splicing position of the upper die 1 and the lower die 2 is provided with a sealing gasket 7, the middle part of the sealing gasket 7 is provided with a fixing hole 15, the sealing gasket 7 is sleeved on the outer wall of the protruding groove 4 through the fixing hole 15, the upper surface of the sealing gasket 7 is provided with a wedge-shaped groove 14 which takes the fixing hole 15 as a circle center and has an annular structure, the bottom of the upper die 1 is provided with a wedge-shaped lug 13, the wedge-shaped lug 13 is matched with the wedge-shaped groove 14, the sealing gasket 7 is arranged between the upper die 1 and the lower die 2 to play a sealing role, the wedge-shaped groove 14 on the upper surface of the sealing gasket 7 is matched with the wedge-shaped lug 13 at the bottom of the upper die 1, when the wedge-shaped lug 13 of the upper die 1 is pressed down to enter the wedge-shaped groove 14, the wedge-shaped groove 14 is extruded to be tightly attached together, the, pneumatic valve 12 is equipped with two, when needing the cylinder 10 drive to go up mould 1 and descend, open the pneumatic valve 12 of above, the cylinder 10 promotes lift push pedal 11 and descends, need go up mould 1 and leave when mould 2, the pneumatic valve 12 of below is opened to the pneumatic valve 12 of closing above, the cylinder 10 promotes lift push pedal 11 again and rises, little flow controller 9 is installed with the pipe connection department of helium container to jet-propelled passageway 8, a flow for controlling the helium that gets into in the airtight detection cavity, the maximize of control helium that can be accurate, it is extravagant to reduce the helium, improve measurement accuracy.
The utility model discloses a theory of operation: an air injection channel 8 of the device is connected with a helium container, an air extraction channel 5 is connected with a leak detector interface, when the leak detection of the EV relay 3 is carried out, the EV relay 3 is firstly inverted on a convex groove 4, an air cylinder 10 is controlled by a pneumatic valve 12 to drive a lifting push plate 11 to descend, so that a sealing washer 7 is pressed in the bottom of an upper die 1, a sealed detection cavity is formed between the upper die 1 and a lower die 2 at the moment, a vacuum air extraction system in the leak detector evacuates air in the cavity through the air extraction channel 5 to reach a state meeting the leak detection requirement, then helium is controlled by a micro-flow controller 9 to enter the cavity, whether the helium is received or not is detected by the leak detector, therefore, the leak detection of the EV relay 3 is realized, after the leak detection is finished, the leak detector stops evacuating the cavity, the micro-flow controller 9 is closed, the EV relay 3 may be removed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A new energy EV relay test fixture is characterized by comprising a closed detection cavity formed by splicing an upper die (1) and a lower die (2), an EV relay (3) is placed in the cavity, wherein the top of the upper die (1) is connected with a lifting push plate (11), the lifting push plate (11) is controlled by a cylinder (10), an air injection channel (8) for injecting helium is arranged in the upper die (1), one end of the air injection channel (8) is communicated with the closed detection cavity, the other end is connected with an external helium container pipeline, the bottom of the lower die (2) is provided with an air exhaust channel (5), the top end of the air exhaust channel (5) is communicated with the closed detection cavity, the other end of the air exhaust channel is connected with an interface pipeline of an external leak detector through an air exhaust pipe (6), the top of the lower die (2) is also provided with a raised groove (4) for fixing the EV relay (3).
2. The new energy EV relay test fixture according to claim 1, characterized in that a sealing gasket (7) is arranged at the splicing position of the upper die (1) and the lower die (2), a fixing hole (15) is formed in the middle of the sealing gasket (7), and the sealing gasket (7) is sleeved on the outer wall of the protruding groove (4) through the fixing hole (15).
3. The new energy EV relay test fixture is characterized in that a wedge-shaped groove (14) of an annular structure with a fixing hole (15) as a center is formed in the upper surface of the sealing washer (7), a wedge-shaped protruding block (13) is arranged at the bottom of the upper die (1), and the wedge-shaped protruding block (13) is matched with the wedge-shaped groove (14).
4. The new energy EV relay test fixture is characterized in that a pneumatic valve (12) is arranged on the cylinder (10), and the pneumatic valve (12) controls the cylinder (10) to drive the lifting push plate (11) to lift.
5. The new energy EV relay test fixture is characterized in that a micro-flow controller (9) is installed at the connection position of the air injection channel (8) and a helium container and used for controlling the flow of helium entering a closed detection cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488515.1U CN211877319U (en) | 2019-12-31 | 2019-12-31 | New forms of energy EV relay test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488515.1U CN211877319U (en) | 2019-12-31 | 2019-12-31 | New forms of energy EV relay test fixture |
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| Publication Number | Publication Date |
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| CN211877319U true CN211877319U (en) | 2020-11-06 |
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| CN201922488515.1U Active CN211877319U (en) | 2019-12-31 | 2019-12-31 | New forms of energy EV relay test fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034446A (en) * | 2021-09-10 | 2022-02-11 | 黄山旺荣电子有限公司 | Automatic leakage detecting machine for detecting air tightness of household relay explosion-proof product |
-
2019
- 2019-12-31 CN CN201922488515.1U patent/CN211877319U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034446A (en) * | 2021-09-10 | 2022-02-11 | 黄山旺荣电子有限公司 | Automatic leakage detecting machine for detecting air tightness of household relay explosion-proof product |
| CN114034446B (en) * | 2021-09-10 | 2024-02-27 | 黄山旺荣电子有限公司 | Automatic leakage detection machine for detecting air tightness of explosion-proof product of household relay |
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