CN205941632U - Shield assembly is used in test of broadband low temperature receiver - Google Patents
Shield assembly is used in test of broadband low temperature receiver Download PDFInfo
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- CN205941632U CN205941632U CN201620800160.9U CN201620800160U CN205941632U CN 205941632 U CN205941632 U CN 205941632U CN 201620800160 U CN201620800160 U CN 201620800160U CN 205941632 U CN205941632 U CN 205941632U
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- radome
- shielding cavity
- temperature receiver
- broadband low
- screening arrangement
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Abstract
The utility model relates to a shield assembly is used in test of broadband low temperature receiver, include from under and shield cover of the last last shield cover that sets gradually downwards, well shield cover, upward shield cover, well shield cover, lower shield cover enclose into a sealed shielding cavity, descend the shield cover can dismantle continuous preceding picture peg including lower shield cover main part with lower shield cover main part. During the upper end of shield cover is down detained by the lower extreme of well shield cover, during the lower extreme of going up the shield cover is detained in the upper end of shield cover. Broadband low temperature receiver test can solve the not enough of among prior art existence with the device, carry the convenience of high shield effect and use.
Description
Technical field
This utility model is related to receiver shield technology field and in particular to a kind of broadband low-temperature receiver test is shielded
Cover device.
Background technology
The task of receiver is that the small-signal receiving antenna chooses from noise and interference, is then passed through putting
Greatly, after filtering, frequency conversion and signal processing, obtain required useful signal.Low-temperature receiver is by the crucial portion of room temperature receiver
Part（As low-noise amplifier, antenna feed etc.）Freeze to low temperature（As 20K, 77K etc.）Warm area forms ultra-low noise temperature reception
Machine.Because the ambient temperature residing for low-temperature receiver is low, the critical component noise of receiver is made to reduce, the sensitivity of receiver shows
Write and improve, therefore, low-temperature receiver is widely used in the necks such as satellite communication, military equipment upgrading, moon exploration program and survey of deep space
Domain.
The broadband feed of broadband low-temperature receiver integrally cooling in broadband low-temperature receiver Dewar, broadband is presented
Source is horn-like structure, and its horn mouth is towards the reception space signal that comes up.Broadband low-temperature receiver, in test process, can be subject to
The electromagnetic interference that electrical equipment, electric machinery, electronic communication equipment etc. bring.In order to avoid Electromagnetic Interference broadband low temperature connects
The test result of receipts machine, needs during test broadband low-temperature receiver is placed in screening arrangement, by its with external environment condition every
Leave and shielded, Electromagnetic Interference is reduced in allowed band.However, due to broadband low-temperature receiver machine volume
Greatly, quality weight, therefore, existing screening arrangement is also coarse scale structures, and this not only affects shield effectiveness, and uses ten
Divide inconvenience.
Utility model content
The purpose of this utility model is to provide a kind of broadband low-temperature receiver test screening arrangement, and this device can
Solve the deficiencies in the prior art, improve the convenience of shield effectiveness and use.
For achieving the above object, this utility model employs technical scheme below：
A kind of broadband low-temperature receiver test screening arrangement, including the upper radome from up to down setting gradually, in
Radome and lower radome；Described upper radome, middle radome, lower radome surround the shielding cavity of a sealing；Described lower screen
Cover cover and include lower radome main body and the front card being detachably connected with lower radome main body.The lower end of described middle radome buckles into
In the upper end of lower radome, the lower end of upper radome buckles in the upper end of middle radome.
Further, described upper radome includes the upper shielding cavity of lower ending opening and along the setting of upper shielding cavity bottom periphery
Upper backup pad.
Further, described middle radome include upper and lower ends opening middle shielding cavity, along in shielding cavity upper end periphery set
In first putting gripper shoe and along in shielding cavity bottom periphery setting second in gripper shoe.In described first, gripper shoe is L
Type, including be connected on the lateral wall of middle shielding cavity upper end along vertical setting middle connecting portion and be vertically connected on middle connection
The middle supporting part of portion's lower end outside.
Further, described lower radome main body includes the lower shielding cavity of upper end and front opening, along lower shielding cavity upper end
The lower supporting plate of periphery setting, the circuit inlet/outlet pipe being connected on lower shielding chamber inner sidewall and be arranged on lower shielding cavity front end and open
The guide rail being slidably matched inside at mouthful and with front card.
Further, described front card includes front card main body and the lifting plate along the setting of front card main body upper end periphery；
Described lifting plate is L-type, connects including the lifting plate along vertical setting being connected on the lateral wall of front card main body upper end
Portion and the lifting plate supporting part being vertically connected on lifting connecting portion lower end outside.
Further, the side wall of described lower shielding cavity is offered the line throughhole being adapted with circuit inlet/outlet pipe.
Further, described guide rail offers guide groove.
Further, described lower supporting plate be L-type, including be connected on the lateral wall of lower shielding cavity upper end along plummet direction
The lower connecting portion of setting and the lower supporting part being vertically connected on lower connecting portion lower end outside.
Further, described upper radome, middle radome and lower radome are equipped with handle.
Compared with prior art, this utility model has the beneficial effect that：
（1）It is empty that screening arrangement described in the utility model becomes to have closed shield using upper, middle and lower-ranking radome superimposed
The casing in chamber, decreases the weight of every layer of radome, is easy to carry, and three layers of radome mutually interlocks slotting, increased shielding gap
Depth, improve shield effectiveness, be large scale screening arrangement welding provide technical support.
（2）The front opening of the lower shielding cavity in screening arrangement described in the utility model, is received using broadband low temperature
Broadband low-temperature receiver can easily be pushed lower shielding intracavity it is not necessary to lift whole receiver by the bottom pulley of machine, and under
All it is welded with guide rail inside two ends at shielding cavity front opening, be easy to front card insertion sealing.
（3）Screening arrangement described in the utility model has that structure is simple, convenient in carrying, low cost, reliability are strong, shielding
The features such as effect is good, and install convenient and swift it is adaptable to the broadband low-temperature receiver of each wave band is tested.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the longitudinal sectional view of Fig. 1；
Fig. 3 is the structural representation of upper radome；
Fig. 4 is the structural representation of middle radome；
Fig. 5 is the structural representation of the lower radome being not inserted into front card；
Fig. 6 is the enlarged diagram in I portion in Fig. 5；
Fig. 7 is the structural representation of front card.
Wherein：
1st, lower radome, 2, middle radome, 3, upper radome, 4, broadband low-temperature receiver, 5, foam box body, 6, lower screen
Cover chamber, 7, guide rail, 8, circuit inlet/outlet pipe, 9, lower supporting plate, 10, front card, 11, front card main body, 12, lifting plate, 13, middle screen
Cover chamber, gripper shoe in 14, first, gripper shoe in 15, second, 16, upper shielding cavity, 17, upper backup pad, 18, guide groove, 19, handle,
20th, line throughhole.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described further：
A kind of broadband low-temperature receiver test screening arrangement as Figure 1-Figure 2, including from up to down setting successively
Upper radome 3, middle radome 2 and the lower radome 1 put.Described upper radome 3, middle radome 2, that lower radome 1 surrounds one is close
The shielding cavity of envelope.Described lower radome 1 includes lower radome main body and the front card being detachably connected with lower radome main body
10.The lower end of described middle radome 2 buckles in the upper end of lower radome 1, and the lower end of upper radome 3 buckles into the upper of middle radome 2
In end.The both sides of described upper radome 3, middle radome 2 and lower radome 1 are all put and are welded with handle 19, are easy to every layer of radome
Carrying.Broadband low-temperature receiver 4 is placed in shielding cavity, and the foam box body 5 equipped with liquid nitrogen is placed on broadband low temperature and connects
On the feed end face of receipts machine 4.
As shown in figure 3, described upper radome 3 includes the upper shielding cavity 16 of lower ending opening and along outside upper shielding cavity 16 bottom
The upper backup pad 17 of week setting.Described upper radome 3 is to be opened using the lower end that the thick corrosion resistant plate bending of 2mm, full weld become
The casing of mouth.Described upper backup pad 17 is along the surrounding setting of upper shielding cavity 16 lower end, and its bottom is in the bottom of upper shielding cavity 16
Full weld.
As shown in figure 4, described middle radome 2 include upper and lower ends opening middle shielding cavity 13, along in shielding cavity 13 upper end
Periphery setting first in gripper shoe 14 and along in shielding cavity 13 bottom periphery setting second in gripper shoe 15.Described first
Middle gripper shoe 14 be L-type, include be connected on middle shielding cavity 13 upper end lateral wall along vertical setting middle connecting portion with
It is vertically connected on the middle supporting part of middle connecting portion lower end outside.
Described middle shielding cavity 13 is the case of the upper and lower ends opening being become using the thick corrosion resistant plate bending of 2mm, full weld
Body.The upper plane of the upper plane of middle supporting part and middle shielding cavity is parallel to each other, and the distance between two planes are 100mm；In
The side of connecting portion is fitted on the lateral wall of middle shielding cavity 13 upper end, and its upper extreme point is welded in the lateral wall of middle shielding cavity 13
On, bottom full weld is on the lateral wall of middle shielding cavity 13；Using gripper shoe 14 and its welding manner in the first of L-type, Neng Gouyou
Effect avoids the welding deformation of middle radome, reduces the assembly difficulty of whole device.
The lower end of described middle radome 2 buckles into the upper end of lower radome 1, and in second, gripper shoe 15 is connected with lower supporting plate 9
Touch, and the gap between the side of middle radome 2 and lower radome 1 is 4mm.The lower end of described upper radome 3 buckles into middle shielding
The upper end of cover 2, upper backup pad 17 contacted with gripper shoe in first 14, between upper radome 3 and the side of middle radome 2 between
Gap is 4mm.Depth in radome 2 in upper radome 3 insertion is 100mm, the depth in radome 1 under middle radome 2 insertion
For 100mm.By the side to the gap between upper radome 3 and the side of middle radome 2, middle radome 2 and lower radome 1
Between gap be configured, can effectively reduce the assembly difficulty causing because of welding deformation, improve and fill between three layers of radome
The convenience joined.This inserted mode between the radome of upper, middle and lower, increased gap depth, effectively increases screening arrangement
Shield effectiveness.
As shown in figure 5, described lower radome main body includes the lower shielding cavity 6 of upper end and front opening, along along lower shielding cavity 6
Hold the periphery lower supporting plate 9 arranging, the circuit inlet/outlet pipe 8 being connected on lower shielding cavity 6 medial wall and be separately positioned on lower screen
Two guide rails 7 covering inside two ends at the front opening of chamber 6 and being slidably matched with front card 10.On the side wall of described lower shielding cavity 6
Offer the line throughhole 20 being adapted with circuit inlet/outlet pipe 8.Described lower supporting plate 9 is L-type, including being connected to lower shielding cavity 6
The lower connecting portion along the setting of plummet direction on the lateral wall of upper end and the lower support being vertically connected on lower connecting portion lower end outside
Portion.Cable and wire is passed in shielding cavity by circuit inlet/outlet pipe 8 and is connected with broadband low-temperature receiver 4.
Described lower radome 1 is the casing of the upper end open being surrounded by lower radome main body and front card 10.Described
Lower shielding cavity 6 is the casing using 2mm thickness corrosion resistant plate bending, a front end of full weld one-tenth and upper end open.7 points of two guide rails
The medial wall full weld at two ends not along at lower shielding cavity 6 front opening, and two guide rails 7 are oppositely arranged.Circuit inlet/outlet pipe 8 is located at down
In shielding cavity 6, and the quantity of circuit inlet/outlet pipe 8 is 3, and full weld is in the line throughhole 20 of lower shielding cavity 6 left plate respectively
Side.Lower supporting part is parallel to the upper plane of lower shielding cavity 6, and the distance between lower supporting part and upper plane of lower shielding cavity 6 are
100mm.Under lower connecting portion laminating, the upper end lateral surface of shielding cavity 6 is arranged along the periphery of lower shielding cavity 6, and the upper end of lower connecting portion
Point is welded on the lateral wall of lower shielding cavity 6, and bottom full weld is on the lateral wall of lower shielding cavity 6；Using L-shaped lower supporting plate 9 and
Its welding manner, can be prevented effectively from lower radome welding deformation, reduce the assembly difficulty of whole device.
As shown in fig. 6, offering guide groove 18 on described guide rail 7.The bottom surface of described guide rail and lower shielding cavity is perpendicular.Described
The upper end of guide groove 18 is provided with chamfering, and chamfering plays guide effect, is easy to smoothly import front card 10 guide groove 18.
As shown in fig. 7, described front card 10 includes front card main body 11 and along the setting of front card main body 11 upper end periphery
Lifting plate 12.Described lifting plate 12 be L-type, include be connected on front card main body 11 upper end lateral wall along vertical arranging
Lifting plate connecting portion and the lifting plate supporting part being vertically connected on lifting connecting portion lower end outside.Lifting plate supporting part upper
Plane is parallel with the upper plane of front card main body 11, and the distance between two planes are 100mm.The one side of lifting plate connecting portion
The lateral surface of laminating front card main body 11 upper end, and its upper extreme point is welded on the lateral wall of front card main body 11, bottom full weld exists
On the lateral wall of front card main body 11；Using lifting plate 12 and the above-mentioned welding manner of L-shaped, front card 10 can be prevented effectively from
Welding deformation, lifting lifting plate 12 just can be easily by the guide groove 18 of two guide rails 7 in two ends of front card 10.
Specifically used process of the present utility model is：
（1）Catch handle 19 on lower radome 1 that lower radome 1 is lifted to laboratory firmly smoothly on ground, utilize
The bottom pulley of broadband low-temperature receiver 5 pushes broadband low-temperature receiver 4 in lower radome 1, that is, descend radome 1 bottom surface
Top.
（2）Cable and wire is passed through in lower radome 1 by circuit inlet/outlet pipe 8 and is connected with broadband low-temperature receiver 4, will
The two ends of the front card 10 of lower radome are inserted along guide rail 7 along the guide groove 18 on two guide rails 7, until propping up lower shielding cavity 6 bottom
Face, thus the front end of lower shielding cavity 6 is blocked, only stays upper end open.
（3）The lower end of middle radome 2 is buckled into lower radome 1 upper end by the handle catching middle radome, props up in second
Fagging 15 is contacted with lower supporting plate 9.
（4）The foam box body 5 that will be equipped with liquid nitrogen is positioned on the feed end face of broadband low-temperature receiver 4；
（5）The lower end of upper radome 3 is buckled into middle radome 2 upper end, until upper support by the handle 19 catching radome 3
Plate 17 is contacted with the first gripper shoe 14.
（6）Three layers of radome be successively from bottom to top after superimposed, using shielding copper adhesive tape by all tiny contact gaps patches
Altogether, it is in the shielding cavity of sealing with ensureing broadband low-temperature receiver 4.
（7）Using cold heat load method, broadband low-temperature receiver 4 is tested.
Embodiment described above is only preferred implementation of the present utility model to be described, not to this practicality
New scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of this utility model claims determination
In the range of.
Claims (10)
1. a kind of broadband low-temperature receiver test screening arrangement it is characterised in that：Upper including from up to down set gradually
Radome, middle radome and lower radome；Described upper radome, middle radome, lower radome surround the shielding cavity of a sealing；
Described lower radome includes lower radome main body and the front card being detachably connected with lower radome main body.
2. a kind of broadband low-temperature receiver test screening arrangement according to claim 1 it is characterised in that：In described
The lower end of radome buckles in the upper end of lower radome, and the lower end of upper radome buckles in the upper end of middle radome.
3. a kind of broadband low-temperature receiver test screening arrangement according to claim 1 it is characterised in that：On described
Radome includes upper shielding cavity and the upper backup pad along the setting of upper shielding cavity bottom periphery of lower ending opening.
4. a kind of broadband low-temperature receiver test screening arrangement according to claim 1 it is characterised in that：In described
Radome include upper and lower ends opening middle shielding cavity, along in shielding cavity upper end periphery setting first in gripper shoe and along in
Gripper shoe in the second of shielding cavity bottom periphery setting；
In described first gripper shoe be L-type, include be connected on the lateral wall of middle shielding cavity upper end along vertical arrange along
Connecting portion and the middle supporting part being vertically connected on middle connecting portion lower end outside.
5. a kind of broadband low-temperature receiver test screening arrangement according to claim 1 it is characterised in that：Under described
Radome main body includes the lower shielding cavity of upper end and front opening, the lower supporting plate along the setting of lower shielding cavity upper end periphery, connection
Circuit inlet/outlet pipe on lower shielding chamber inner sidewall and be arranged on inside at lower shielding cavity front opening and slide with front card
The guide rail of cooperation.
6. a kind of broadband low-temperature receiver test screening arrangement according to claim 1 it is characterised in that：Before described
Plate includes front card main body and the lifting plate along the setting of front card main body upper end periphery；Described lifting plate is L-type, including connection
On the lateral wall of front card main body upper end along vertical setting lifting plate connecting portion and be vertically connected on lifting connect
The lifting plate supporting part of portion's lower end outside.
7. a kind of broadband low-temperature receiver test screening arrangement according to claim 5 it is characterised in that：Under described
The line throughhole being adapted with circuit inlet/outlet pipe is offered on the side wall of shielding cavity.
8. a kind of broadband low-temperature receiver test screening arrangement according to claim 5 it is characterised in that：Described lead
Guide groove is offered on rail.
9. a kind of broadband low-temperature receiver test screening arrangement according to claim 5 it is characterised in that：Under described
Gripper shoe is L-type, including the lower connecting portion along the setting of plummet direction being connected on the lateral wall of lower shielding cavity upper end and vertically
It is connected to the lower supporting part of lower connecting portion lower end outside.
10. a kind of broadband low-temperature receiver test screening arrangement according to claim 1 it is characterised in that：Described
It is equipped with handle on upper radome, middle radome and lower radome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620800160.9U CN205941632U (en) | 2016-07-27 | 2016-07-27 | Shield assembly is used in test of broadband low temperature receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620800160.9U CN205941632U (en) | 2016-07-27 | 2016-07-27 | Shield assembly is used in test of broadband low temperature receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941632U true CN205941632U (en) | 2017-02-08 |
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ID=57927081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620800160.9U Active CN205941632U (en) | 2016-07-27 | 2016-07-27 | Shield assembly is used in test of broadband low temperature receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813944A (en) * | 2017-11-20 | 2019-05-28 | 伟睿科技（深圳）有限公司 | Modular shielding castle |
| CN114283952A (en) * | 2021-11-19 | 2022-04-05 | 核工业西南物理研究院 | Vertical neutron camera shielding and collimating structure |
-
2016
- 2016-07-27 CN CN201620800160.9U patent/CN205941632U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813944A (en) * | 2017-11-20 | 2019-05-28 | 伟睿科技（深圳）有限公司 | Modular shielding castle |
| CN114283952A (en) * | 2021-11-19 | 2022-04-05 | 核工业西南物理研究院 | Vertical neutron camera shielding and collimating structure |
| CN114283952B (en) * | 2021-11-19 | 2023-05-16 | 核工业西南物理研究院 | Vertical neutron camera shielding and collimating structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |