CN205749583U - A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture - Google Patents
A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture Download PDFInfo
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- CN205749583U CN205749583U CN201620482696.0U CN201620482696U CN205749583U CN 205749583 U CN205749583 U CN 205749583U CN 201620482696 U CN201620482696 U CN 201620482696U CN 205749583 U CN205749583 U CN 205749583U
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Abstract
The utility model discloses a kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture, the coaxial metal shield that it is generally closed, mainly include left end portion, right end portion and the coaxial holder of mid portion three part grading structure；Described left and right two ends are the gradual change cone structure that structure is identical, are symmetricly set on the both sides of mid portion；Described mid portion generally cylindrical coaxial fixture, it includes left section coaxial, right section, and coaxially and stage casing is coaxial, and left section the most identical with right section of coaxial configuration, is symmetricly set on the both sides of stage casing coaxial parts.Test device solder joint it is relatively set with on the inner wire outer surface of described fixture mid portion and outer conductor inwall.Fixture mid portion is carried out internal-and external diameter axile displacement compensation by isometrical conductor to gradual change cone simultaneously, decrease the high frequency signal transmission hydraulic performance decline caused because of Step of radius.This utility model strong innovation, simple in construction, each several part size is relatively fixed, and can dismantle flexibly, is conveniently standardized making and batch machining, has and preferably promotes and prospect of the application.
Description
Technical field
This utility model relates to a kind of coaxial-type test fixture technical field, especially relates to a kind of more piece gradual change coaxial-type
Element high pressure fast pulse response test fixture.
Background technology
The development of high-power electromagnetic pulse weapon safety to electric power systems causes serious threat, Gao Gong
The feature of rate electromagnetic pulse is exactly that power is high, and pulse rise time is fast, bandwidth.Lightning Electromagnetic Pulse relatively, nuclear electromagnetic pulse,
High-Power Microwave, ultra broadband contour power electromagnetic pulse radio-frequency component enriches, and rising edge is up to the even sub-ns magnitude of ns.High power
Electromagnetic pulse mainly has two kinds to the attack pattern of electric/electronic device, and a kind of is that the aperture by device housings and gap etc. are straight
Connecing and be coupled into device interior and damage effect, another kind is by the power line of Informationization Equipment, control line and signal
The metal core wire such as line couple and conduct and damage inside access arrangement.Comparatively speaking, conduction interference is difficult to by equipment self
Reinforcing take precautions against, using surge protector component is a kind of effective preventive means.The speed of action of surge protector component, mistake
Rush response characteristic, through-current capability etc. the most preferable, determine the actual protection effect to high-power electromagnetic pulse.But, due to
High-power electromagnetic impulse waveform parameter difference the most of the same race is relatively big, and electromagnetic pulse is the most multiple to the mechanism of action of semiconductor element
Miscellaneous so that the fast pulse response characteristic of protection element is difficult to be obtained by emulation, therefore, test is to evaluate element protection performance
Important means.
Existing surge protector component method of testing and measurement criteria are many for lightening pulse (rise time is us level), and pin
The fast pulse protection of ns level even sub-to ns, there is presently no barrier propterty detection device and the testing standard of maturation.Protection
Element fast pulse response test is a key technical problem of electromagnetic compatibility and guard technology field, and wherein, element test presss from both sides
Have the necessary means accessing test circuit as protection element, need to effectively design, and meet following several dot characteristics: the
One, high-power electromagnetic rising edge of a pulse is fast, and radio-frequency component enriches, undistorted for ensureing the impulse waveform injecting protection element, surveys
Examination fixture and must be tested system impedance and matched, and meets requirement at index parameters such as specifying high band standing-wave ratio.Second, test
Fixture allows for isolating transient pulse and radiates the impact of test environment to external world, has shield effectiveness.3rd, high-power electromagnetic
Pulse energy is the highest, and peak electric field must have higher compressive resistance up to MV/m level, test fixture, it is ensured that access test electricity
Road will not be burned out, it is ensured that the safety of test system.Meanwhile, conventional fast pulse protection component kind is more, lead-in inductance length
Difference, therefore, fixture is preferably able to carry out more piece design, and different types of protection element can access test circuit.PLA
Ordnance Engineering College once have developed a kind of 50 Ω microstrip transmission line direct insertion element test fixture, and this fixture is by design micro-strip electricity
Road also installs metal shell additional, preferably achieves fixing testing element and the function of shielding external world radiation.But microstrip line is pressure
Intensity is relatively low, and pulse voltage amplitude to be measured burns the danger of test fixture compared with Gao Shiyou, and micro-strip is to the switching of coaxial fitting simultaneously
Place easily causes the catadioptric of high-frequency signal, and causing this test fixture transmission characteristic in 1 ~ 3GHz microwave frequency band is not very
Preferable.
Utility model content
In order to solve the problem in background technology, the utility model discloses a kind of more piece gradual change coaxial-type element high pressure fast
Impulse response test fixture.The purpose of this utility model is to solve test fixture compressive resistance in prior art and test device
Relatively low, the undesirable problem affecting test result of frequency transfer characteristic.When carrying out protecting element fast pulse injection testing, it is used for
Element under test and pulse signal source and oscillographic be connected, guarantee effect is to the test pulse waveform at element two ends and Yuan Mai as far as possible
Rush waveform consistent.
In order to realize described utility model purpose, this utility model adopts the following technical scheme that
A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture, the coaxial metal screen that it is generally closed
Cover body, mainly include left end portion, right end portion and the coaxial holder of mid portion three part grading structure；Described is left and right
Two ends are the gradual change cone structure that structure is identical, are symmetricly set on the both sides of mid portion；Described left and right two end portions is wrapped respectively
Including gradual change cone inner wire and gradual change cone outer conductor, the diameter of gradual change cone inner wire and gradual change cone outer conductor is from end
Portion to being the cone structure being gradually increased with mid portion binding site, gradual change cone inner wire and the end of gradual change cone outer conductor
Portion is connected to isometrical prolongation inner wire and isometrical prolongation outer conductor；Described mid portion generally cylindrical coaxial
Structure, it includes left section coaxial, right section, and coaxially and stage casing is coaxial, and left section the most identical with right section of coaxial configuration, is symmetricly set on
The both sides of stage casing coaxial parts, left section of coaxial and right section of coaxial inner wire and the grading structure including a diameter of grading structure respectively
Outer conductor, stage casing coaxial holder includes isometrical Circular inner conductor c and isometrical stage casing outer conductor；The outer of left section of coaxial parts is led
The outer conductor of body and right section of coaxial parts is connected by ring flange with the gradual change cone outer conductor at two ends, left and right respectively, and left section coaxial
The inner wire of part and the inner wire of right section of coaxial parts gradual change cone inner wire with two ends, left and right respectively pass through attachment bolt
Connect；Test device solder joint it is relatively set with on the inner wire outer surface of described intermediate holder and outer conductor inwall.Meanwhile, for
Improve the impedance matching property at varied cross section in fixture, design a kind of method that axile displacement compensates, to fixture mid portion
Carried out internal-and external diameter mis-registry compensation by isometrical conductor to gradual change cone, decrease the high frequency signal transmission caused because of Step of radius
Can decline.
Left and right two sections of coaxial inner conductors of described mid portion include respectively at least one isometrical Circular inner conductor saved and
The stepped Circular inner conductor of one joint.
Left and right two sections of coaxial outer conductors of described mid portion at least include that a joint internal diameter is that the outer of grading structure is led
Body.
Left and right two sections of coaxial inner conductors of mid portion described further include two joints isometrical Circular inner conductor a and etc.
Footpath Circular inner conductor b, two joint stepped Circular inner conductor a and stepped Circular inner conductor b, its diameter from in gradual change cone
Conductor connection is gradually increased to Circular inner conductor c connecting portion isometrical with stage casing, and two save isometrical Circular inner conductor and two joint rank
Scalariform Circular inner conductor alternately connects.
Left and right two sections of coaxial outer conductors of mid portion described further are made up of outer conductor a and outer conductor respectively, both
Between connect fixing by ring flange, nut and screw, its internal diameter from the position being connected with gradual change cone outer conductor to stage casing
The position that conductor connects is gradually increased, and it is arranged alternately is constituted by isometrical internal diameter and stepped internal diameter, its isometrical inside diameter
Position is corresponding with isometrical Circular inner conductor and stepped Circular inner conductor respectively with stepped internal diameter position, outer conductor b and stage casing
Outer conductor is connected by ring flange.
Six it are provided with to test device solder joint on the inner wire outer surface of described mid portion and outer conductor inwall.
It is provided with poly-the four of fixing supporting role between inner wire outer surface and the outer conductor inwall of described mid portion
Fluorothene support ring.
Owing to have employed technique scheme, this utility model has the advantages that
This coaxial test fixture inherently metal shield closed, can reduce quick electromagnetic Pulsed radiation field
Impact on tested protection element, it is not necessary to additionally design metal shielding box, decrease design procedure, reduces design difficulty
Degree.Additionally, the inside and outside coaxial design of more piece grading structure, the protection element of different length can be facilitated to access test circuit, make
Obtain this fixture and there is certain versatility；The ring flange that two ends can be dismantled respectively so that the most convenient during element replacement.Meanwhile,
The characteristic impedance design of whole fixture various places inside is consistent (50 Ω), and uses the axile displacement penalty method cross section to grading structure
Place is designed, and can reduce the high-frequency signal reflection problems caused due to impedance mismatch in test to greatest extent, improves fixture
High-frequency transmission performance, it is ensured that the accuracy of test result.Between fixture internal-and external diameter, employing politef is as backing material, can
To keep the Stability Analysis of Structures of whole test fixture.Through computational analysis, this test fixture has higher compressive resistance, minimum resistance to
Pressure value, up to 11kV, can be used for the test of mesohigh pulse signal, it is ensured that test system is not burned out.
Described test fixture has a characteristic that fixing tested element, can access folder according to component lead length simultaneously
At the different parts of tool, reduce the wave distortion that fixture causes.Ensure fixture internal impedance coupling, characteristic impedance is designed as 50
Ω, and grading structure section is carried out axile displacement compensation, this fixture has good transmission characteristic after tested, it is ensured that
1M ~ 3GHz frequency range standing internal wave is less than 1.4 than parameter.The radiation of isolation transient pulse, solves first to protection along Pulsed radiation field soon
The impact of part.There is higher compressive resistance value, it is ensured that protect element and the safety of test system when mesohigh pulse test.
Additionally, this clamp structure is simple, each several part size is relatively fixed, and can dismantle flexibly, is conveniently standardized making and adding in batches
Work, has and preferably promotes and prospect of the application.
Accompanying drawing explanation
This utility model patent can be described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is fixture overall structure profile of the present utility model.
Fig. 2 is the assembling exploded view of fixture of the present utility model.
Fig. 3 is this utility model actual measurement standing-wave ratio curve chart in 1M ~ 3G frequency range.
Wherein 1, extend inner wire, 2, extend outer conductor, 3, support ring, 4, gradual change cone inner wire, 5, outside gradual change cone
Conductor, 6, couple stud, 7, ring flange, 8, nut, 9, screw, 10, test device solder joint, 11, isometrical Circular inner conductor a, 11-
1, stepped Circular inner conductor a, 12, isometrical Circular inner conductor b, 12-1, stepped Circular inner conductor b, 13, lead in isometrical cylinder
Body c, 14, outer conductor a, 15, outer conductor b, 16, stage casing outer conductor, 17, extend contact pin.
Detailed description of the invention
As shown in Figure 1: its metal shield generally closed, left end portion, right end portion and pars intermedia are mainly included
Divide the coaxial holder of three part grading structures；Described left and right two ends are the gradual change cone structure that structure is identical, are symmetricly set on
The both sides of mid portion；Described left and right two end portions includes gradual change cone inner wire 4, gradual change cone outer conductor 5 respectively, and gradual change is bored
The diameter of both internal conductor 4 and gradual change cone outer conductor 5 from end to being the cone being gradually increased with mid portion binding site
Body structure, the end of gradual change cone inner wire 4 and gradual change cone outer conductor 5 is connected to isometrical prolongation inner wire 1 and prolongs
Long outer conductor 2.
Described mid portion generally cylindrical coaxial structure, it include left section of coaxial parts, right section of coaxial parts and
Stage casing coaxial parts, left section of coaxial parts is identical with right section of coaxial parts structure, is symmetricly set on coaxial parts both sides, stage casing, left
Section is coaxial coaxially includes the inner wire of a diameter of grading structure and the outer conductor of grading structure, stage casing coaxial parts respectively with right section
Including isometrical Circular inner conductor c13 and stage casing outer conductor 16.Outer conductor and the outer of right section of coaxial parts of left section of coaxial parts are led
Body is connected by ring flange with the gradual change cone outer conductor at two ends, left and right respectively, and the inner wire of left section of coaxial holder and right section are coaxial
The inner wire of fixture is connected by attachment bolt 6 with the gradual change cone inner wire at two ends, left and right respectively.
As shown in Figure 2: the inner wire of left and right two sections of coaxial configurations of described intermediate coaxial part includes at least one respectively
The isometrical Circular inner conductor of joint and the stepped Circular inner conductor of a joint.The inner wire of the left and right two sections of coaxial configurations of the present embodiment
Including the isometrical Circular inner conductor a11 and isometrical Circular inner conductor b12 of two joints, the stepped Circular inner conductor a11-1 of two joints and
Stepped Circular inner conductor b12-1, its diameter from gradual change cone inner wire 4 junction to Circular inner conductor isometrical with stage casing
C13 connecting portion is gradually increased.The two stepped Circular inner conductors saving isometrical Circular inner conductor and two joints alternately connect.
The outer conductor of the left and right two sections of coaxial configurations in described intermediate coaxial part at least includes that a joint internal diameter is gradual change
The outer conductor of structure.The outer conductor of left and right two sections of coaxial configurations of the present embodiment respectively by outer conductor a14 and outer conductor b15, two
Connect fixing by ring flange 7, nut 8 and screw 9 between joint, its internal diameter from the position being connected with gradual change cone outer conductor 5 to
The position being connected with stage casing outer conductor 16 is gradually increased, and it has isometrical internal diameter and stepped internal diameter to be arranged alternately composition, its etc.
The internal diameter position in footpath is corresponding with isometrical Circular inner conductor and stepped Circular inner conductor respectively with stepped internal diameter position.Lead outward
Body b15 is connected by ring flange with stage casing outer conductor 16.Inner wire outer surface in relative intermediate coaxial fixture and leading outward
Test device solder joint 10 it is respectively arranged with on internal wall.The present embodiment can be that the offer of this coaxial holder is multiple not for six butt welding point
With size measuring device welding scheme.Between inner and outer conductor, it is provided with support ring 3, play fixed supporting role.
Actual measurement standing-wave ratio curve chart in 1M ~ 3G frequency range as shown in Figure 3, it can be seen that this fixture is at 2GHz from figure
Standing internal wave ratio is less than 1.2, and 2 ~ 3GHz standing internal wave ratio, less than 1.4, has flat frequency to respond in 3GHz.
The present embodiment is to solve the impact on protected element of the quick electromagnetic Pulsed radiation field, and test fixture is monolithically fabricated one
Individual metal shield, and be made up of the many groups of parts that can dismantle flexibly, use simple, easy to assembly.For meeting different size unit
The testing requirement of part, is more piece grading structure by jig Design, designs six to welding between three sections of various sizes of internal and external conductors
Point, facilitates element to access.Undesirable, the problem of impedance mismatch, this utility model for solution test device frequency transfer characteristic
Use coaxial line transmission principle, fixture characteristic impedance everywhere is designed as 50 Ω；Carry out at gradual change coaxial parts section simultaneously
Axile displacement compensates and the stepped slow graded scheme of multistage, reduces the high-frequency signal catadioptric caused because of inside/outside diameter size sudden change.
Pressure relatively low for solving test fixture, it is impossible to apply the problem in high-voltage pulse signal field tests, inside and outside fixture, centre sets
Meter teflon insulation support ring, can keep the Stability Analysis of Structures of whole test fixture.
Principle of the present utility model and embodiment thereof are set forth by specific case used herein, above enforcement
The explanation of example is used only to help to understand method of the present utility model and core concept thereof.It should be pointed out that, for this area is general
From the point of view of logical technical staff, this utility model can also be carried out on the premise of without departing from this utility model principle some improvement and
Modifying, these improve and modification also falls in this utility model scope of the claims.
Claims (7)
1. a more piece gradual change coaxial-type element high pressure fast pulse response test fixture, the coaxial metal shielding that it is generally closed
Body, is characterized in that: mainly include left end portion, right end portion and the coaxial holder of mid portion three part grading structure；Described
Left and right two ends be the gradual change cone structure that structure is identical, be symmetricly set on the both sides of mid portion；Described left and right both ends
Divide and include gradual change cone inner wire and gradual change cone outer conductor, gradual change cone inner wire and gradual change cone outer conductor respectively
Diameter from end to being the cone structure being gradually increased with mid portion binding site, outside gradual change cone inner wire and gradual change cone
The end of conductor is connected to isometrical prolongation inner wire and isometrical prolongation outer conductor；Described mid portion is round
Cylindrical coaxial structure, it includes left section coaxial, right section, and coaxially and stage casing is coaxial, and left section the most identical with right section of coaxial configuration, right
Claim to be arranged on the both sides of stage casing coaxial parts, left section of coaxial and right section of inner wire coaxially including a diameter of grading structure respectively and
The outer conductor of grading structure, stage casing coaxial holder includes isometrical Circular inner conductor c and isometrical stage casing outer conductor；Left section of coaxial portion
The outer conductor divided and the outer conductor of right section of coaxial parts are connected by ring flange with the gradual change cone outer conductor at two ends, left and right respectively,
The inner wire of left section of coaxial parts and the inner wire of right section of coaxial parts gradual change cone inner wire with two ends, left and right respectively passes through
Attachment bolt connects；Test device weldering it is relatively set with on the inner wire outer surface of described intermediate holder and outer conductor inwall
Point.
More piece gradual change coaxial-type element high pressure fast pulse response test fixture the most according to claim 1, is characterized in that: institute
Left and right two sections of coaxial inner conductors of the mid portion stated include at least one isometrical Circular inner conductor saved and the ladder of a joint respectively
Shape Circular inner conductor.
More piece gradual change coaxial-type element high pressure fast pulse response test fixture the most according to claim 1, is characterized in that: institute
Left and right two sections of coaxial outer conductors of the mid portion stated at least include that a joint internal diameter is the outer conductor of grading structure.
More piece gradual change coaxial-type element high pressure fast pulse response test fixture the most according to claim 1 and 2, its feature
It is: left and right two sections of coaxial inner conductors of described mid portion are led in including the isometrical Circular inner conductor a of two joints and isometrical cylinder
Body b, two joint stepped Circular inner conductor a and stepped Circular inner conductor b, its diameter from gradual change cone inner wire junction
Being gradually increased to Circular inner conductor c connecting portion isometrical with stage casing, two save isometrical Circular inner conductor and two saves in stepped cylinder
Conductor alternately connects.
5. according to the more piece gradual change coaxial-type element high pressure fast pulse response test fixture described in claim 1 or 3, its feature
It is: left and right two sections of coaxial outer conductors of described mid portion are made up of outer conductor a and outer conductor b respectively, pass through between the two
Ring flange, nut and screw connect fixing, and its internal diameter connects from the position being connected with gradual change cone outer conductor to stage casing outer conductor
The position connect is gradually increased, and it is arranged alternately is constituted by isometrical internal diameter and stepped internal diameter, its isometrical internal diameter position and rank
Scalariform internal diameter position is corresponding with isometrical Circular inner conductor and stepped Circular inner conductor respectively, outer conductor b and stage casing outer conductor
Connected by ring flange.
More piece gradual change coaxial-type element high pressure fast pulse response test fixture the most according to claim 1, is characterized in that: institute
Six it are provided with to test device solder joint on the inner wire outer surface of the mid portion stated and outer conductor inwall.
More piece gradual change coaxial-type element high pressure fast pulse response test fixture the most according to claim 1, is characterized in that: institute
The politef being provided with fixing supporting role between inner wire outer surface and the outer conductor inwall of the mid portion stated supports
Ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620482696.0U CN205749583U (en) | 2016-05-25 | 2016-05-25 | A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620482696.0U CN205749583U (en) | 2016-05-25 | 2016-05-25 | A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture |
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| Publication Number | Publication Date |
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| CN205749583U true CN205749583U (en) | 2016-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891555A (en) * | 2016-05-25 | 2016-08-24 | 中国人民解放军61489部队 | Multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture |
-
2016
- 2016-05-25 CN CN201620482696.0U patent/CN205749583U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891555A (en) * | 2016-05-25 | 2016-08-24 | 中国人民解放军61489部队 | Multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture |
| CN105891555B (en) * | 2016-05-25 | 2018-08-17 | 中国人民解放军61489部队 | A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture |
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