CN106653487B - A kind of production method of high-voltage DC contactor - Google Patents
A kind of production method of high-voltage DC contactor Download PDFInfo
- Publication number
- CN106653487B CN106653487B CN201710044556.4A CN201710044556A CN106653487B CN 106653487 B CN106653487 B CN 106653487B CN 201710044556 A CN201710044556 A CN 201710044556A CN 106653487 B CN106653487 B CN 106653487B
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- Prior art keywords
- contactor
- voltage
- hydrogen
- inner chamber
- helium
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
Abstract
The invention discloses a kind of production methods of high-voltage DC contactor, by using above-mentioned technical proposal, compared with being passed through single inert gas hydrogen with the prior art, a certain proportion of hydrogen and helium are passed through in closing inner chamber inside the high-voltage DC contactor, its own stability with higher of helium, do not allow to be also easy to produce the dangerous situations such as explosion, mixed gas is passed through by lasting in process of producing product simultaneously, mass spectrometer is combined in the way of positive pressure detection, the case where having detected whether leakage, and then determine the leakproofness of high-voltage DC contactor, detection mode is simple, be conducive to keep to improve production efficiency while product higher-security.
Description
Technical field
The present invention relates to a kind of production methods of automatic control system element, more specifically to a kind of high voltage direct current
The production method of contactor.
Background technique
D.C. contactor is used in one of DC loop contactor, corresponding with A.C. contactor, generally also there is master
Contact, auxiliary contact and coil contact.Suitable for programmable power supply or uninterruptible power system, fork truck, electric car, mobile electricity
In many new energy fields such as dynamic charging pile；After contactor coil is powered, coil current generates magnetic field, generates fixed core
Electromagnetic attraction attracts dynamic iron core, and acts with movable contact: normally-closed contact disconnects, and normally opened contact closure, the two is linkage.Work as line
When circle power-off, electromagnetic attraction disappears, and armature discharges under the action of release spring, restores contact: normally opened contact disconnects, normally closed
Contact closure.
As shown in Figures 1 to 4 is high-voltage DC contactor part-structure in the prior art and overall structure, specifically
Shown in FIG. 1 is for the stationary electrode porcelain case member in existing high-voltage DC contactor, and stationary electrode porcelain case member includes insulation porcelain shell
2, two stationary electrodes 1 and sealing-in flange 3 are opened up in the upper end of insulation porcelain shell 2 there are two through-hole, and the end of stationary electrode 1 wears logical
Hole is simultaneously welded by solder, and sealing-in flange 3 is by the lower end of solder welding and insulation porcelain shell 2, and stationary electrode porcelain case member is by vacuum
Slice welds；
Shown in Fig. 2 is the bottom deck assembly in existing high-voltage DC contactor, and bottom deck assembly includes bottom plate 4 and is connected to
The exhaust pipe 5 of bottom plate 4, bottom deck assembly is brazed by vacuum drying oven；
It is shown in Fig. 4 be existing high-voltage DC contactor with 5 state of exhaust pipe when overall structure, above-mentioned overall structure
First by stationary electrode porcelain case member and bottom deck assembly by being laser welded, specific welding position A is bottom plate 4 back to air-exhausting duct
Back to 2 side of insulation porcelain shell, overall structure further includes dynamic core assembly as shown in Figure 3 for surface and sealing-in flange 3, moves magnetic core group
Part includes lever 7, dynamic magnetic core 6 and dynamic magnetic core outer shell 8, and 7 one end of lever, which is worn, enters to bottom plate 4, sealing-in flange 3 and insulation porcelain
Shell 2 is formed by closing inner chamber 18, and the other end is located at bottom plate 4 back to 3 side of sealing-in flange, and the end wears dynamic magnetic core 6,
Dynamic magnetic core outer shell 8 is set in outside dynamic magnetic core 6, and dynamic 8 sets of opposed bottoms 4 of magnetic core outer shell once abut 4 surface of bottom plate and pass through laser
Weld together.
As shown in figure 4, it is existing to be easy to produce electric arc in high-voltage DC contactor operation, in internal closing inner chamber 18
As leading to the damage of internal element, in the prior art by injecting inert gas in the closing inner chamber 18, and then protecting closing
Element in inner cavity 18, existing inert gas generally uses hydrogen, however hydrogen, due to its own characteristic, integrality is not
Be it is very stable, high-voltage DC contactor is welded by all parts, so the overall sealing performance of high-voltage DC contactor
With the increase for using the time, some problems can usually occur for the leakproofness of internal closing inner chamber 18, and hydrogen is easy to cause to let out
Open fire is encountered after dew, hydrogen after leakage and air mixing dangerous situations, the existing high voltage direct current such as explosion will occur connect
Tentaculum safety is to be improved, and there are improvements.
Utility model content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of producer of high-voltage DC contactor
Method, the production method, convenient for testing and analyzing, are mentioned by being passed through a certain proportion of hydrogen and helium into high-voltage DC contactor
The high safety of obtained product.
To achieve the above object, the present invention provides the following technical scheme that a kind of production method of high-voltage DC contactor,
Including step 1: the high-voltage DC contactor ontology with closing inner chamber is first made, and is vacuumized to closing inner chamber inside, also wraps
Following steps are included, specific as follows:
Step 2: inert mixed gas is made in the hydrogen and helium mix for being 1:4 to 2:3 by volume ratio；
Step 3: inert mixed gas is passed through into closing inner chamber, is contacted using mass spectrometer analysis high voltage direct current
Gas componant around device ontology；
Step 4: setting the preset pressure value in closing inner chamber by pressure gauge, lasting to be passed through inert mixed gas
Into closing inner chamber until reaching preset pressure value；
Step 5: after stopping inert mixed gas being passed through, closing is passed through the ventilation of inert mixed gas towards closing inner chamber
High-voltage DC contactor finished product is made in entrance.
By using above-mentioned technical proposal, compared with single inert gas hydrogen is passed through with the prior art, helium its own
Stability with higher, it is not easy to generate the dangerous situations such as explosion, while be passed through in process of producing product by lasting
Mixed gas the case where combining mass spectrometer in the way of positive pressure detection, detected whether leakage, and then determines high straightening
The leakproofness of contactor is flowed, detection mode is simple, is conducive to keep to improve production efficiency while product higher-security.
The present invention is further arranged to: the volume ratio of hydrogen and helium is 1:4 in the step 2.
The present invention is further arranged to: the volume ratio of hydrogen and helium is 2:3 in the step 2.
The present invention is further arranged to: the volume ratio of hydrogen and helium is 3:7 in the step 2.
It, can be in preferable protection closing using the volume ratio of above-mentioned hydrogen and helium by using above-mentioned technical proposal
Mass spectral analysis in inner cavity while element convenient for leakproofness.
The present invention is further arranged to: it further includes sample detection that inert mixed gas is made in the step 2, by hydrogen
Mixing warehouse is each led into helium, is connected on mixing warehouse for the main pipeline towards the ventilation of sealing inner cavity, the supervisor
Branch pipe(tube) is communicated on road.
By using above-mentioned technical proposal, measured in the way of sample detection the inert mixed gas in main pipeline at
Divide ratio, it is advantageously ensured that being actually passed through the consistency of data between gas and detection gas, and then accomplishes to adjust hydrogen at any time
Be passed through ratio between helium, be conducive to improve be passed through into high-voltage DC contactor inert mixed gas ingredient it is accurate
Degree.
In conclusion the invention has the following advantages:
First, the production method of high-voltage DC contactor production efficiency with higher, and then it is raw to reduce enterprise
Produce cost payout；
Second, during product obtained by the production method of the high-voltage DC contactor is easy to produce and in later period use
Detection, so that high-voltage DC contactor uses safety with higher.
Detailed description of the invention
Fig. 1 is the cross-sectional view of prior art subassembly stationary electrode porcelain case member；
Fig. 2 is the cross-sectional view of prior art subassembly bottom deck assembly；
Fig. 3 is the cross-sectional view that prior art subassembly moves core assembly；
Fig. 4 be prior art high-voltage DC contactor with exhaust pipe state when overall structure cross-sectional view；
Fig. 5 is the cross-sectional view of embodiment；
Fig. 6 is the hydrogen of embodiment and the schematic diagram of helium mix.
Appended drawing reference: 1, stationary electrode；2, insulation porcelain shell；3, sealing-in flange；4, bottom plate；5, exhaust pipe；6, magnetic core is moved；7, it moves
Bar；8, magnetic core outer shell is moved；9, mould is welded；91, die housing is welded；92, die cap is welded；10, seal cavity；11, exhaust tube；12,
Hydrogen Line；13, Hydrogen Line；14, positioning mould；15, switch valve；16, pressure gauge；17, electrical heating net；18, closing inner chamber；
19, warehouse is mixed；20, main pipeline；A, welding position.
Specific embodiment
The embodiment of the present invention is described further referring to figs. 1 to Fig. 6.
Embodiment one:
A kind of production method of high-voltage DC contactor, specifically comprises the following steps:
As shown in Fig. 1 to 5, filler is assembled: by stationary electrode porcelain case member, bottom deck assembly and dynamic core assembly peace according to existing
The structure composition of high-voltage DC contactor is mounted in advance in the seal cavity 10 of a welding mould 9, and welding mould 9 includes welding die housing
91 are constituted with die cap 92 is welded, and seal cavity 10 is located in welding die housing 91, especially by a placement left side in seal cavity 10
Right two positioning moulds 14, above-mentioned positioning mould 14 abut fixed sealing-in flange 3 and insulation porcelain shell 2, so that entire contact
Device can be uprightly placed in welding mould 9, in sealing-in flange 3 and insulation porcelain shell 2, stationary electrode 1 and insulation porcelain shell 2, sealing-in method
Each welding position A between orchid 3 and bottom plate 4, dynamic magnetic core outer shell 8 and bottom plate 4, bottom plate 4 and exhaust pipe 5 places weld filler, is
Filler is enabled to be adapted to the sealing-in of each welding position A on high-voltage DC contactor, above-mentioned filler is alloy packing；
Vacuumize: the exhaust tube 11 by being connected to seal cavity 10 carries out seal cavity 10 to vacuumize process, discharge
Air in seal cavity 10, specific air suction mode are to connect a vacuum pump back to welding 9 one end of mould in exhaust tube 11, are utilized
Air inside vacuum pump discharge welding 9 seal cavity 10 of mould, since high-voltage DC contactor carries out sealing-in not yet, so right
After excluding air in seal cavity 10, that is, complete the air-discharging operation to closing inner chamber 18；
High-temperature heating sealing-in: it is improved inside seal cavity 10 by the heating component being placed on 10 inner wall of seal cavity
Temperature completes sealing-in until weld filler melts, and from cost and heating efficiency, heating component selects electrical heating net 17,
Specific heating temperature is 600 to 900 degrees Celsius, and heating time is 30 to 60 seconds；
It is cooled and shaped: closing heating component, making 10 inside of seal cavity, the temperature remains within the normal range, and specific cooling time can basis
Different product is freely adjusted, and after cooling complete, opens welding die cap plate 92, high-voltage DC contactor after cooling is taken
Out.
As shown in fig. 6, inert mixed gas makes: inertia mixing is made in the hydrogen and helium mix for being 1:4 by volume ratio
Gas, concrete mode are that one mixing warehouse 19 of setting is communicated with Hydrogen Line 12 and helium pipeline 13 on mixing warehouse 19,
Switch valve 15 is provided on pipeline, Hydrogen Line 12 and helium pipeline 13 have been correspondingly connected with hydrogen air accumulator and helium air accumulator,
Main pipeline 20 is communicated on mixing warehouse 19；
As shown in connection with fig. 5, detect leakproofness: main pipeline 20 is connected to exhaust pipe 5, by exhaust pipe 5 by inert mixed gas
It is passed through into closing inner chamber 18, high-voltage DC contactor is placed into mass spectrometer, due to containing in inert mixed gas
Whether helium detects leakproofness that is, using the gas componant around mass spectrometer analysis high-voltage DC contactor ontology
It is qualified；
Quantifying for inert mixed gas is passed through: pressure gauge 16, the pressure value that pressure gauge 16 is tested being arranged on main pipeline 20
When equal with the preset value of the high-voltage DC contactor, stop inert gas injection, and close the switch valve on main pipeline 20
15；Exhaust pipe 5 is wiped out, and the sheared edge of exhaust pipe 5 is sealed, finished product.
Above-mentioned detection leakproofness process can inert mixed gas quantify be passed through after carry out, product is placed in
In mass spectrometer, it can also regularly be detected after product is using a period of time.
Embodiment two:
With the volume ratio being between hydrogen and helium in place of the difference of embodiment one, volume ratio is 2:3 by this programme
Hydrogen and helium mix, be made inert mixed gas.
Embodiment three:
With the volume ratio being between hydrogen and helium in place of the difference of embodiment one, volume ratio is 3:7 by this programme
Hydrogen and helium mix, be made inert mixed gas.
To sum up, the volume ratio of the comparison between three kinds of embodiments, embodiment three can be in preferably protection closing inner chamber
It is convenient for mass spectral analysis while element, improves safety on the whole, avoids the leakage of hydrogen from exploding, is conducive to product
The real-time detection of leakproofness, preferred embodiment three.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of production method of high-voltage DC contactor, including step 1: the high straightening with closing inner chamber (18) is first made
Contactor ontology is flowed, and is vacuumized to closing inner chamber (18) is internal, which is characterized in that by stationary electrode porcelain case member, bottom deck assembly
And dynamic core assembly is mounted in the seal cavity (10) of a welding mould (9) according to the structure composition of existing high-voltage DC contactor in advance
In, welding mould (9) includes that welding die housing (91) and welding die cap (92) are constituted, and seal cavity (10) is located at welding die housing
(91) in, the exhaust tube (11) by being connected to seal cavity (10) carries out seal cavity (10) to vacuumize process, is discharged close
The air in cavity (10) is sealed, and then completes to vacuumize inside closing inner chamber (18), it is further comprising the steps of, specific as follows:
Step 2: inert mixed gas is made in the hydrogen and helium mix for being 1:4 to 2:3 by volume ratio；It is made in the step 2
Obtaining inert mixed gas further includes sample detection, hydrogen and helium is each led into mixing warehouse (19), in mixing warehouse (19)
On be connected with for the main pipeline (20) towards the ventilation of sealing inner cavity, be communicated with branch pipe(tube) on the main pipeline (20)；
Step 3: inert mixed gas is passed through into closing inner chamber (18), is contacted using mass spectrometer analysis high voltage direct current
Gas componant around device ontology；
Step 4: lasting by inert mixed gas by the preset pressure value in pressure gauge (16) setting closing inner chamber (18)
It is passed through into closing inner chamber (18) until reaching preset pressure value；
Step 5: after stopping inert mixed gas being passed through, closing is passed through the ventilation of inert mixed gas towards closing inner chamber (18)
High-voltage DC contactor finished product is made in entrance.
2. a kind of production method of high-voltage DC contactor according to claim 1, which is characterized in that in the step 2
The volume ratio of hydrogen and helium is 1:4.
3. a kind of production method of high-voltage DC contactor according to claim 1, which is characterized in that in the step 2
The volume ratio of hydrogen and helium is 2:3.
4. a kind of production method of high-voltage DC contactor according to claim 1, which is characterized in that in the step 2
The volume ratio of hydrogen and helium is 3:7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710044556.4A CN106653487B (en) | 2017-01-21 | 2017-01-21 | A kind of production method of high-voltage DC contactor |
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| CN201710044556.4A CN106653487B (en) | 2017-01-21 | 2017-01-21 | A kind of production method of high-voltage DC contactor |
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| CN106653487B true CN106653487B (en) | 2019-05-14 |
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| CN107180730B (en) * | 2017-07-04 | 2020-08-25 | 厦门宏发电力电器有限公司 | High-temperature-resistant relay and production method thereof |
| CN109411296A (en) * | 2018-02-27 | 2019-03-01 | 温州市科泓机器人科技有限公司 | The intelligent production method of contactor |
| CN110391114B (en) * | 2019-06-29 | 2021-07-30 | 广东利元亨智能装备股份有限公司 | Production process of direct current contactor |
| CN110231131B (en) * | 2019-06-29 | 2022-06-07 | 广东利元亨智能装备股份有限公司 | Air tightness detection process |
| CN111558774A (en) * | 2020-07-20 | 2020-08-21 | 昆山联滔电子有限公司 | Relay welding device and welding method |
| CN116558743B (en) * | 2023-07-06 | 2023-09-12 | 江苏德琛常工新能源科技创新有限公司 | Airtight testing device with leakage early warning function for hydrogen energy equipment |
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