CN106298756B - A kind of IGBT series connection crimping encapsulation unit and the dc circuit breaker using the encapsulation unit - Google Patents
A kind of IGBT series connection crimping encapsulation unit and the dc circuit breaker using the encapsulation unit Download PDFInfo
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- CN106298756B CN106298756B CN201610684150.8A CN201610684150A CN106298756B CN 106298756 B CN106298756 B CN 106298756B CN 201610684150 A CN201610684150 A CN 201610684150A CN 106298756 B CN106298756 B CN 106298756B
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- 238000005538 encapsulation Methods 0.000 title claims abstract description 51
- 238000002788 crimping Methods 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241001149930 Protura <class> Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/10—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
- H01L25/11—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L29/00
- H01L25/115—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Power Conversion In General (AREA)
- Automatic Assembly (AREA)
Abstract
It connects the present invention provides a kind of IGBT and crimps encapsulation unit and using the dc circuit breaker of the encapsulation unit, IGBT series connection crimping encapsulation unit includes braced frame and the IGBT valve string in braced frame, one end of IGBT valve string is provided with press fitting stress cone in braced frame, braced frame includes the first flange plate close to press fitting stress cone one end, the pressure adapter that leadscrew-nut mechanism is formed with first flange plate is threaded on first flange plate, the perforation passed through for the mandril for being pressed stress cone is provided on pressure adapter, pressure adapter has the press end with press fitting stress cone press cooperation.The beneficial effects of the present invention are: pressure adapter is threadedly engaged with first flange plate, it is moved inward accurately on first flange plate so as to the rotation by pressure adapter, until gap is accurately filled up, it ensure that the pressure of pressure applied and holding is completely the same, realize the accurate control of pressure assembling force, it ensure that press-fit effect, improve press fitting quality.
Description
Technical field
It connects the present invention relates to a kind of IGBT and crimps encapsulation unit and using the dc circuit breaker of the encapsulation unit.
Background technique
Insulated gate bipolar transistor (IGBT) is the high-power semiconductor switching device of near ideal, has input impedance
Greatly, driving power is small, switching loss is low, high voltage and the features such as high current, collect MOSFET gate voltage characteristic and BJT it is low
, application is extremely wide for on-resistance characteristics, especially all in wind electric converter, photovoltaic DC-to-AC converter, motor inverter etc.
It is multi-field.
Currently, IGBT series connection crimping encapsulation unit is widely used in flexible DC transmission technology field, crimp
The crimping packaged type of type IGBT be also it is varied, the crimping packaged type of comparative maturity mainly have it is vertical and two kinds horizontal,
It is related that the difference of crimping packaged type, which crimps the composed structure of encapsulation unit with IGBT series connection,.Application publication number is
CN105355603A, data of publication of application are that the Chinese invention patent application of 2016.02.24 discloses a kind of big component IGBT press fitting
Unit, i.e. a kind of IGBT series connection crimping encapsulation unit, including braced frame and in braced frame for fixing IGBT valve string
Press fitting unit, it is described press fitting unit include be located at IGBT valve string both ends press fitting stress cone and pressure adaptive adjustment machine
Structure, is pressed stress cone and pressure adaptive adjustment mechanism connects with the metal end plate at braced frame both ends respectively.Wherein, IGBT valve
String is made of radiator and IGBT spaced series；Pressure adaptive adjustment mechanism includes pressure adaptive conehead and pressure adaptive
Nest is bored, is arranged with disc spring on the cylindrical section of pressure adaptive conehead, keeps and applied for realizing the pressure after pressure-loaded
The deformation of journey adjusts；The end face of conical nose and one end of IGBT valve string for being pressed stress cone are adjacent to, are pressed the cylinder of stress cone
Section passes through pressure adapter and is connected by pressure adapter with the metal end plate of braced frame one end, press fitting stress cone and pressure
The adjustment gasket being sheathed on the cylindrical section of press fitting stress cone is installed between power adapter, adjusts gasket for realizing IGBT pressure
The filling in compressive deformation gap during dress.
When press fitting, by external hydraulic loading mechanism, pressure is applied to press fitting stress cone, external pressure assembling force passes through press fitting
Stress cone uniformly applies pressure to IGBT and radiator, and progressivelyes reach specified pressure assembling force needed for IGBT.In pressure-loaded
In the process, disc spring is gradually deformed by compression, is being pressed between stress cone and pressure adapter a deformation gap, in outside
Before pressure assembling force revocation, therebetween by the adjustment gasket cooperated with the gap size filling, then after the revocation of external pressure assembling force, pass through
Pressure assembling force is maintained inside IGBT press fitting unit by disc spring deformation.
This IGBT press fitting cellular construction causes it to have a problem that in press fitting, matches due to being selection with gap size
The adjustment gasket filling of conjunction therebetween, and requirement of the IGBT press fitting unit for pressure assembling force be it is very harsh, hypertonia can damage
Bad IGBT, hypotony, which will cause, presses the inconsistent service performance to influence press fitting unit, if adjustment gasket is slightly larger, by force
Pressure assembling force will be increased by filling in, if adjustment gasket is slightly smaller, can reduce pressure assembling force after filling in instead, and find size just
Suitable adjustment gasket is very difficult, it is therefore desirable to which the pressure assembling force of holding is unable to accurately control, so as to cause press fitting quality
It is low, press-fit effect is undesirable.In addition, since one end of valve string is provided with disc spring, when in use process disc spring deform and by
When compression, the adjustment gasket that plug is attached to the other end is possible to loosen, and drops out from valve string, and entire IGBT is caused to connect
Crimping encapsulation unit can not normal use.
In addition, being answered in order to which the high potential realized between braced frame and IGBT is isolated in press fitting in IGBT press fitting unit
Power cone is external to be provided with one and is dielectrically separated from disk, which adds the composition device of press fitting unit, leads to that structure is complicated.
Summary of the invention
The purpose of the present invention is to provide the IGBT series connection crimping encapsulation units that a kind of pressure assembling force can be controlled accurately；This hair
Bright purpose, which also resides in, provides a kind of dc circuit breaker using the encapsulation unit.
In order to solve the above-mentioned technical problem, IGBT connects and crimps the technical solution of encapsulation unit in the present invention are as follows:
A kind of IGBT series connection crimping encapsulation unit, the IGBT valve string including braced frame and in braced frame, support
One end of IGBT valve string is provided with press fitting stress cone on frame, braced frame includes the first method close to press fitting stress cone one end
Blue plate is threaded with the pressure adapter that leadscrew-nut mechanism is formed with first flange plate, pressure adaptation on first flange plate
The perforation passed through for the mandril for being pressed stress cone is provided on device, pressure adapter has the top with press fitting stress cone press cooperation
Pressure side.
It is provided on the pressure adapter for cooperating the stop section to prevent pressure adapter from rotating with retainer.
The stop section includes rotation stop plane, is fixed with retainer on the first flange plate.
The section of the stop section is hexagonal, offers hexagon ring on the retainer.
The braced frame further includes the second flange plate positioned at the other end, solid between first flange plate and second flange plate
Surely there is insulated pull rod, be further fixed between first flange plate and second flange plate for limiting the radiator in IGBT valve string
The insulation gag lever post of position is provided with limiting slot on the radiator.
The press fitting stress cone be isolation material, be pressed on the tapered end face of stress cone offer for in IGBT valve string
Radiator location fit pin hole.
The technical solution of dc circuit breaker in the present invention are as follows:
A kind of dc circuit breaker crimps encapsulation unit including capacitor group and the IGBT being connected with capacitor group series connection,
IGBT series connection crimping encapsulation unit includes braced frame and the IGBT valve string in braced frame, in IGBT valve in braced frame
One end of string is provided with press fitting stress cone, and braced frame includes the first flange plate close to press fitting stress cone one end, first flange
It is threaded with the pressure adapter for forming leadscrew-nut mechanism with first flange plate on plate, is provided with pressure supply on pressure adapter
The perforation that the mandril of dress stress cone passes through, pressure adapter have the press end with press fitting stress cone press cooperation.
It is provided on the pressure adapter for cooperating the stop section to prevent pressure adapter from rotating with retainer.
The stop section includes rotation stop plane, is fixed with retainer on the first flange plate.
The section of the stop section is hexagonal, offers hexagon ring on the retainer.
The beneficial effects of the present invention are: pressure adapter is threadedly coupled with first flange plate and forms feed screw nut machine
Structure is pressed perforation of the mandril of stress cone on pressure adapter, the press end of pressure adapter and press fitting stress cone press
Cooperation, in this way when making gap occur between press fitting stress cone and pressure adapter to mandril load external force, so that it may rotation pressure
Power adapter makes its linear movement, finally fills up gap, to make to press end and be pressed stress cone press to cooperate, compared to existing
In the mode of gap internal plug gasket in technology, the present invention is threadedly engaged using pressure adapter and first flange plate, is utilized
The design feature and advantage being threadedly engaged, so as to the rotation by pressure adapter make its on first flange plate accurately to
Interior movement ensure that the pressure of pressure applied and holding is completely the same, realize pressure assembling force until gap is accurately filled up
Accurate control, be not in pressure caused by due to gasket is improper it is excessive and cross minor issue, ensure that press-fit effect, improve
Press fitting quality.
Detailed description of the invention
Fig. 1 is the stereochemical structure of the IGBT series connection crimping encapsulation unit in the present invention in one embodiment of dc circuit breaker
Figure；
Fig. 2 is the main view cut away view of Fig. 1；
Fig. 3 is the three-dimensional structure diagram of braced frame in IGBT series connection crimping encapsulation unit；
Fig. 4 is the main view of Fig. 3；
Fig. 5 is the structural schematic diagram of dished spring assembly in IGBT series connection crimping encapsulation unit；
Fig. 6 is the structural schematic diagram of pressure-loaded adapter in IGBT series connection crimping encapsulation unit；
Fig. 7 be IGBT series connection crimping encapsulation unit after the assembly is completed, pressure do not load before structure chart；
Fig. 8 is structure chart of the IGBT series connection crimping encapsulation unit in pressure-loaded；
Fig. 9 is IGBT series connection crimping encapsulation unit after the completion of pressure-loaded, the structure chart of state of pressure keeping；
Figure 10 is the assembly principle assumption diagram of check plate and insulation gag lever post in IGBT series connection crimping encapsulation unit；
Figure 11 is the structural schematic diagram of the second radiator；
Figure 12 is the left view cut away view of Figure 11；
Figure 13 is the partial enlarged view in Figure 12.
In figure: 1. first flange plates；2. second flange plate；3. insulated pull rod；4. nut；5. the second radiator；51. pin hole
Two；52. arc-shaped slot；53.IGBT installs card slot；54. drawing busbar；6. the first radiator；7.IGBT；8. positioning pin；
9.IGBT driving plate；10. disc spring；11. disc spring plunger；12. pressure adjust automatically block；13. stress cone；14. pressure-loaded is adapted to
Device；141. press ends；142. thread segment；143. stop sections；15. check plate；16. fixing screws；17. insulate gag lever post；18. solid
Determine hole；19. threaded hole；20. gag lever post fixation hole；21. screw hole；22. disc spring plunger is perforated.
Specific embodiment
One embodiment of dc circuit breaker is as shown in Fig. 1 ~ Figure 13, including capacitor group (not shown) and and capacitor
The connected IGBT series connection crimping encapsulation unit of device group, IGBT series connection crimping encapsulation unit include braced frame and are located at braced frame
In IGBT valve string, the braced frame includes the first flange plate 1 along left and right settings, second flange plate 2 and is fixed on
Insulated pull rod 3 between one flanged plate 1 and second flange plate 2, the first flange plate 1 and second flange plate 2 are high intensity
Metal plate, guarantee fixation supporting role to IGBT valve string.The insulated pull rod 3 includes high duty metal pull rod and cladding
Insulating sleeve outside metal pull bar, ensure that the intensity and insulation performance of insulated pull rod 3, and the middle section of insulated pull rod 3 is straight
Diameter is 5~10mm bigger than both ends diameter, the shaft shoulder is formed at diameter transition, it is 60~90mm external screw thread that processing length is distinguished at both ends.
The IGBT valve string includes the radiator and IGBT7 of spaced series, and the both ends outermost of IGBT valve string is heat dissipation
Device, the radiator are aluminum alloy material, and surface is through Nickel Plating Treatment.Radiator includes the first radiator 6 and the second radiator 5,
For the IGBT7 between adjacent the first radiator 6 and the second radiator 5, the both ends outermost of IGBT valve string is second
Radiator 5.It is provided on second radiator 5 and draws busbar 54, for being connect with external busbar, also set up on the second radiator 5
There is IGBT installation card slot 53 corresponding with IGBT7, draws busbar and IGBT installation likewise, being also equipped on the first radiator 6
Card slot (is not shown) in figure, in addition, being additionally provided with the fixed position (figure for fixing IGBT driving board 9 on the first radiator 6
In be not shown).
Pressure adapter 14 and press fitting stress cone 13 are provided in braced frame on the left of IGBT valve string, the press fitting is answered
Power cone 13 is made of high-strength insulating material, 90 degree of the angle=of tapered surface, and press fitting stress cone is directly made into insulation, this
Sample, which does not just have to be arranged again, is dielectrically separated from disk, compared to existing technologies, the design reduces press fitting unit composition number of devices,
The structure of press fitting unit is simplified, and mitigates overall weight.The taper large end face of the press fitting stress cone 13 is directly and IGBT
The second radiator 5 in valve string is affixed, and is pressed on the taper large end face of stress cone 13 and is offered for positioning with the second radiator 5
The pin hole one of cooperation is provided with positioning in pin hole one and pin hole 2 51 correspondingly, offering pin hole 2 51 on the second radiator 5
Pin 8.There are two the pin holes 2 51, is arranged symmetrically in two sides of the second radiator 5, likewise, on the first radiator 6
Pin hole there are two opening up.
Pressure adapter 14 includes the thread segment 142 being threadedly coupled with first flange plate 1 and to be set to thread segment 142 right
The press end 141 for the taper small end face press cooperation with press fitting stress cone 13 at end, pressure adapter 14 and first flange
Plate 1, which is threadedly engaged, forms leadscrew-nut mechanism.The pressure adapter 14 further includes being set to being used for for 142 left end of thread segment
Cooperating the stop section 143 to prevent pressure adapter 14 from rotating with check plate 15, the section of stop section 143 is in regular hexagon, this
Sample setting can be convenient the spanner of configuration rotational pressure adapter 14, in use, the spanner with hexagon ring is matched with stop section 143
Close can rotational pressure adapter 14 make its linear movement, that is to say, that stop section 143, which also plays, facilitates rotational pressure adapter
14 effect.The threaded hole 19 being threadedly engaged with the thread segment 142 of pressure adapter 14, pressure are offered on first flange plate 1
Perforation is provided in adapter 14, press fitting stress cone 13 includes the mandril being connected with taper small end face, which passes through described wear
Hole, and can in perforation guiding movement.
IGBT series connection crimping encapsulation unit further include be fixedly linked with first flange plate 1 and with 143 phase of stop section
The check plate 15 of adaptation, the center of check plate 15 offer hexagonal hole, and screw hole 21 is provided on first flange plate 1, right
It answers, check plate 15 is provided with fastener hole, and check plate 15 is fixed on first flange plate 1 by fixing screws 16.
Dished spring assembly and pressure adjust automatically block 12 are provided in braced frame on the right side of IGBT valve string, pressure is adjusted automatically
The left side of monolith 12 is directly affixed with the second radiator 5 in IGBT valve string, and on the left side of pressure adjust automatically block 12
It is provided with pin hole three, the second radiator 5, which is realized with pressure adjust automatically block 12 by positioning pin 8, to be positioned, adjust automatically block 12
Right side is spherical-concave-surface.The dished spring assembly includes disc spring plunger 11, and the right side of disc spring plunger 11 is provided with cylindrical section, cylindrical section
On be arranged with disc spring 10, the cylindrical section passes through second flange plate 2, corresponding, and disc spring plunger is offered on second flange plate 2 and is worn
Hole 22, the cylindrical section can disc spring plunger perforate 22 in guiding movement.The left side of disc spring plunger 11 is and the spherical-concave-surface
The ball convex surface of male-female engagement.
The fixation hole 18 for being fixedly linked with press-fitting tool is offered on first flange plate 1 and second flange plate 2, the
It is further fixed between one flanged plate 1 and second flange plate 2 after pressure-loaded and pressure maintaining to the first radiator 6 in IGBT valve string
The insulation gag lever post 17 limited with the second radiator 5, is provided on corresponding second radiator 5 and 17 phase of gag lever post that insulate
The limiting slot of cooperation, the limiting slot are arc-shaped slot 52, are also equipped with identical arc-shaped slot (in figure not on the first radiator 6
It shows).
The building block principle of IGBT series connection crimping encapsulation unit is: matched press-fitting tool is utilized, first, in accordance with drawing sequence
By each device in IGBT valve string and the press fitting stress cone 13 positioned at IGBT valve string both ends, pressure adjust automatically block 12, disc spring column
The respective support seat of plug 11 is respectively assembled on guide rail, and then each device is placed on corresponding support base.In the process,
The erection sequence of each device is first packed into positioning pin 8 in the pin hole one of pressure stresses cone 13, is then charged into first second
Radiator 5, the pin hole 2 51 and positioning pin 8 for making the second radiator 5 make end face and the pressure stresses of the second radiator 5 to just
The end face fitting of cone 13.It is then charged into first piece of IGBT7, is bonded the pole the E table top of IGBT7 and the end face of the second radiator 5, is infused
Anticipate direction, do not allow it is anti-loaded, subsequent IGBT7 also press this rule installation.It is then charged into first the first radiator 6, makes first
The end face of radiator 6 is bonded with the pole the C table top of IGBT7, and subsequent IGBT7 also presses this rule installation.It will according to this installation rule
The last one second radiator 5 on right side installs, and positioning pin 8 is packed into the pin of the last one the second radiator 5 again
In hole 2 51.Be then charged into pressure adjust automatically block 12, make pin hole three on pressure adjust automatically block 12 and the last one second
Positioning pin 8 in the pin hole 2 51 of radiator 5 makes the end face of pressure adjust automatically block 12 and the end of the second radiator 5 to just
Face paste is closed, and the spherical-concave-surface of pressure adjust automatically block 12 is towards the right side.
Then press fitting is fixed on by first flange plate 1 and second flange plate 2 by fixation hole 18 and according to a certain distance
On the workbench of tooling, in the process, by the assembly of pressure adapter 14 in the threaded hole 19 on first flange plate 1, and will
Pressure adapter 14 is threaded to it and presses end 141 and the cooperation of 1 block of first flange plate, while passes through the mandril for being pressed stress cone 13
Perforation on pressure adapter 14.In addition, during fixed second flange plate 2, need by the disc spring 10 of specified quantity by
Correct placement regulation is packed on the cylindrical section of disc spring plunger 11, and makes disc spring 10 as close as possible to the shaft shoulder face of disc spring plunger 11,
To form dished spring assembly, while the cylindrical section of disc spring plunger 11 being made to pass through the disc spring plunger perforation 22 on second flange plate 2, and
Make disc spring 10 as close as possible to the end face of second flange plate 2.
Then insulated pull rod 3 is fixed between first flange plate 1 and second flange plate 2, makes the shaft shoulder face of insulated pull rod 3
It is bonded with the end face of first flange plate 1 and second flange plate 2, then by regulation torque by nut 4 and mating plain washer, spring pad
Circle tightens fixation, to complete the assembling of IGBT series connection crimping encapsulation unit.
It is slow to the mandril of press fitting stress cone 13 in the horizontal direction using the hydraulic loading mechanism on press-fitting tool when press fitting
Slow to apply pressure, press fitting stress cone 13, the second radiator 5, IGBT7, the first radiator 6, pressure adjust automatically block 12 will be with each
From support base moved on guide rail together, and finally make the ball of the spherical-concave-surface and disc spring plunger 11 of pressure adjust automatically block 12 convex
Face contact.Pressure is continued to, disc spring 10 generates deformation by compression, and collector (pole C) table top of IGBT7 will be pressed gradually
Enter in shell, and finally equal with surrounding shell plane, in the process, press end 141 and the press fitting of pressure adapter 14 are answered
Gap is gradually appeared between the taper small end face of power cone 13.According to device using rule, table top is only for the collector (pole C) of IGBT7
It is inadequate for only flattening, and reserves enough surpluses for pressure that may be present is unbalanced, need to apply extra pressure.
Continue to be slowly increased pressure applied, until reach specified value, keep the pressure state, while to braced frame
Interior slow screw-in pressure adapter 14, until the taper small end face at the press end 141 of pressure adapter 14 and press fitting stress cone 13
Contact, can remove external force at this time.Compared to the prior art in the mode of gap internal plug gasket, the present invention is suitable using pressure
Orchestration 14 is threadedly engaged with first flange plate 1, using the design feature and advantage being threadedly engaged, so as to be adapted to by pressure
The rotation of device 14 moves inward it accurately on first flange plate 1, until press end 141 and the taper for being pressed stress cone 13 are small
End face contact, so that gap be made accurately to be filled up, ensure that the pressure of pressure applied and holding is completely the same, realizes
IGBT is pressed the accurate control of the pressure assembling force of unit, is not in that pressure caused by due to gasket is improper is excessive and too small ask
Topic, ensure that press-fit effect, improves press fitting quality.In addition, there is no gaskets in use process due to not using gasket completely
In drop out the risk of valve string, the normal use of IGBT series connection crimping encapsulation unit has been effectively ensured.
After external force removes, using fixing screws 16 and its matched plain washer, spring washer in only on first flange plate 1
Check plate 15 is installed outside dynamic section 143, after rotating due to pressure adapter 14,15 sets of the check plate outsides in stop section 143 are very
It is difficult to guarantee the fastener hole on check plate 15 and the just centering of screw hole 21 on first flange plate 1, therefore can be by check plate 15
On fastener hole be made into long hole.The hexagonal hole and 143 detent fit of stop section of check plate 15, prevent pressure adapter 14
Rotation, so that pressure adapter 14 be made tightly to press press fitting stress cone 13, pressure adapter 14, which will not both rotate forward, makes pressure assembling force
It increases, will not invert reduces pressure assembling force, so that it is single so that the pressure assembling force of setting is maintained at IGBT series connection crimping encapsulation well
In member, the good service performance of encapsulation unit ensure that.
After press fitting, insulation gag lever post 17 is fixed between first flange plate 1 and second flange plate 2, and make to insulate
Arc-shaped slot of the gag lever post 17 on the first radiator 6, the second radiator 5, to play a branch to the module after press fitting
The effect of support and limit prevents IGBT series connection crimping encapsulation unit during movement and use, due to the floating of disc spring 10
The problem of acting on and causing the position of each device to change to influence service performance.Meanwhile the insulation gag lever post 17 is straight
Diameter is also smaller than the diameter of insulated pull rod 3, compared with insulating supporting crossbeam in the prior art, in the work for guaranteeing support and limit
With while, alleviate the weight of encapsulation unit.
So far, the assembling and crimping of entire IGBT series connection crimping encapsulation unit are just completed.
In the other embodiments of dc circuit breaker: can be in the gap between pressure adapter and press fitting stress cone
A part of gasket is filled in, when gap is smaller, then rotational pressure adapter, so that it is pressed end and passes through gasket and the press fitting stress vertex of a cone
Press-fit；Insulation gag lever post can also be not provided in IGBT series connection crimping encapsulation unit；The section of stop section is also possible to four sides
Shape or pentagon；Stop section can only include a rotation stop plane, for example cut away a part on cylinder and form a rotation stop
Plane, retainer need to only cooperate with the rotation stop plane at this time；It can also be not provided with stop section on pressure adapter, and only have
End and thread segment are pressed, also no longer needs retainer at this time.
For example shown in Fig. 1 ~ Figure 13, IGBT series connection crimps the specific of encapsulation unit for the implementation of IGBT series connection crimping encapsulation unit
Structure is identical as the above-mentioned dc circuit breaker IGBT series connection crimping structure of encapsulation unit as described in the examples, herein no longer in detail
It states.
Claims (4)
1. a kind of IGBT series connection crimping encapsulation unit, the IGBT valve string including braced frame and in braced frame, support frame
One end of IGBT valve string is provided with press fitting stress cone on frame, braced frame includes the first flange close to press fitting stress cone one end
Plate, it is characterised in that: the pressure adapter that leadscrew-nut mechanism is formed with first flange plate is threaded on first flange plate,
The perforation passed through for the mandril for being pressed stress cone is provided on pressure adapter, pressure adapter has and press fitting stress cone press
The press end of cooperation, IGBT valve string are arranged in left-right direction, and the press fitting stress cone, pressure adapter and first flange plate are all provided with
It sets in the left side of IGBT valve string, pressure adapter includes the thread segment being threadedly coupled with first flange plate and is set to thread segment
The press end for the taper small end face press cooperation with press fitting stress cone of right end, pressure adapter further includes being set to screw thread
Duan Zuoduan's is used to cooperate with check plate the stop section to prevent pressure adapter from rotating, and the section of stop section is in regular hexagon；
The threaded hole being threadedly engaged with the thread segment of pressure adapter is offered on first flange plate, is provided with and is worn in pressure adapter
Hole, press fitting stress cone include the mandril being connected with taper small end face, which passes through the perforation, and shifting can be oriented in perforation
It is dynamic；IGBT series connection crimping encapsulation unit further includes be fixedly linked with first flange plate and compatible with stop section stop
Plate, the center of check plate offer hexagonal hole, screw hole are provided on first flange plate, corresponding, check plate is provided with
Fastener hole, check plate are fixed on first flange plate by fixing screws；When press fitting, the hydraulic loaded machine on press-fitting tool is utilized
Structure slowly applies pressure, press end and the press fitting stress cone of pressure adapter to the mandril of press fitting stress cone in the horizontal direction
Gap is gradually appeared between taper small end face, continues to be slowly increased pressure applied, until reaching specified value, keeps the pressure
State, while pressure adapter is slowly screwed in into braced frame, until the press end of pressure adapter and press fitting stress cone
Taper small end face contact, can remove external force at this time；After external force removes, fixing screws and its matched plain washer, spring are utilized
Washer installs check plate on first flange plate outside stop section, the hexagonal hole and stop section detent fit of check plate,
The rotation of pressure adapter is prevented, so that pressure adapter be made tightly to press press fitting stress cone, pressure adapter both will not be just
Turn to increase pressure assembling force, will not invert reduces pressure assembling force, so that the pressure assembling force of setting be made to be maintained at IGBT series connection well
It crimps in encapsulation unit.
2. IGBT series connection crimping encapsulation unit according to claim 1, it is characterised in that: the braced frame further includes position
In the second flange plate of the other end, insulated pull rod, first flange plate and are fixed between first flange plate and second flange plate
The insulation gag lever post for being limited to the radiator in IGBT valve string is further fixed between two flanged plates, on the radiator
It is provided with limiting slot.
3. IGBT series connection crimping encapsulation unit according to claim 1, it is characterised in that: the press fitting stress cone is insulation
Material is pressed the pin hole offered on the tapered end face of stress cone for the radiator location fit in IGBT valve string.
4. a kind of dc circuit breaker, including capacitor group and the IGBT being connected with capacitor group series connection crimping encapsulation unit, IGBT
Series connection crimping encapsulation unit includes braced frame and the IGBT valve string in braced frame, in IGBT valve string in braced frame
One end is provided with press fitting stress cone, and braced frame includes the first flange plate close to press fitting stress cone one end, it is characterised in that: the
It is threaded with the pressure adapter for forming leadscrew-nut mechanism with first flange plate on one flanged plate, is arranged on pressure adapter
There is the perforation passed through for the mandril for being pressed stress cone, pressure adapter has the press end with press fitting stress cone press cooperation,
IGBT valve string is arranged in left-right direction, and the press fitting stress cone, pressure adapter and first flange plate are arranged at IGBT valve string
Left side, pressure adapter include the thread segment being threadedly coupled with first flange plate and be set to thread segment right end for
It is pressed the press end of the taper small end face press cooperation of stress cone, pressure adapter further includes being set to being used for for thread segment left end
Cooperate the stop section to prevent pressure adapter from rotating with check plate, the section of stop section is in regular hexagon；On first flange plate
The threaded hole being threadedly engaged with the thread segment of pressure adapter is offered, perforation is provided in pressure adapter, is pressed stress cone
Including the mandril being connected with taper small end face, which passes through the perforation, and can in perforation guiding movement；IGBT series connection pressure
Connecing encapsulation unit further includes be fixedly linked with first flange plate and compatible with stop section check plate, in check plate
The heart offers hexagonal hole, and screw hole is provided on first flange plate, and corresponding, check plate is provided with fastener hole, check plate
It is fixed on first flange plate by fixing screws；When press fitting, using the hydraulic loading mechanism on press-fitting tool, in the horizontal direction
Slowly apply pressure to the mandril of press fitting stress cone, between the press end of pressure adapter and the taper small end face of press fitting stress cone
Gap is gradually appeared, continues to be slowly increased pressure applied, until reach specified value, keeps the pressure state, while to branch
Pressure adapter is slowly screwed in support frame frame, until the press end of pressure adapter and the taper small end face of press fitting stress cone connect
Touching, can remove external force at this time；After external force removes, using fixing screws and its matched plain washer, spring washer in the first method
Check plate is installed outside stop section, the hexagonal hole and stop section detent fit of check plate prevent pressure to be adapted on blue plate
The rotation of device, so that pressure adapter be made tightly to press press fitting stress cone, pressure adapter, which will not both rotate forward, adds pressure assembling force
Greatly, will not invert reduces pressure assembling force, so that the pressure assembling force of setting be made to be maintained at IGBT series connection crimping encapsulation unit well
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684150.8A CN106298756B (en) | 2016-08-18 | 2016-08-18 | A kind of IGBT series connection crimping encapsulation unit and the dc circuit breaker using the encapsulation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684150.8A CN106298756B (en) | 2016-08-18 | 2016-08-18 | A kind of IGBT series connection crimping encapsulation unit and the dc circuit breaker using the encapsulation unit |
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| CN106298756A CN106298756A (en) | 2017-01-04 |
| CN106298756B true CN106298756B (en) | 2019-05-10 |
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| CN201610684150.8A Active CN106298756B (en) | 2016-08-18 | 2016-08-18 | A kind of IGBT series connection crimping encapsulation unit and the dc circuit breaker using the encapsulation unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585432A (en) * | 2017-09-28 | 2019-04-05 | 株洲中车时代电气股份有限公司 | A kind of IGBT power module |
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| CN107086761A (en) * | 2017-05-16 | 2017-08-22 | 常州博瑞电力自动化设备有限公司 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
| CN108933536B (en) * | 2018-07-24 | 2024-06-28 | 全球能源互联网研究院有限公司 | Diode full-bridge two-stage sub-module for circuit breaker |
| CN109586244B (en) * | 2018-12-14 | 2020-03-27 | 华北电力大学 | IGBT full-bridge symmetrical low-inductance module for circuit breaker |
| CN109586170B (en) * | 2019-01-31 | 2024-04-05 | 国网江苏电力设计咨询有限公司 | Main branch of direct current breaker |
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| Publication number | Publication date |
|---|---|
| CN106298756A (en) | 2017-01-04 |
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