CN201629290U - Tunable backward wave tube - Google Patents
Tunable backward wave tube Download PDFInfo
- Publication number
- CN201629290U CN201629290U CN 200920318049 CN200920318049U CN201629290U CN 201629290 U CN201629290 U CN 201629290U CN 200920318049 CN200920318049 CN 200920318049 CN 200920318049 U CN200920318049 U CN 200920318049U CN 201629290 U CN201629290 U CN 201629290U
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- CN
- China
- Prior art keywords
- inner chamber
- nut
- wave tube
- motor
- backward wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a tunable backward wave tube, which comprises a casing and an inner cavity. The inner cavity is respectively a right inner cavity and a left inner cavity; a nut is connected with the right inner cavity; a helical motion mechanism consisting of a screw rod and the nut is arranged inside a sealing box; and the screw rod rotates to drive the nut to perform linear movement in order to lead the nut to drive the right inner cavity to perform linear movement along an axial direction of the inner cavity and achieve the purpose of adjusting spacing between the left cavity and the right cavity. The tunable backward wave tube has simple structure, low cost and convenient operation.
Description
Technical field
The utility model belongs to the microwave device technical field, is specifically related to a kind of tunable backward wave tube.
Background technology
Backward wave tube is usually operated in vacuum or the pressurized environment, in order not destroy the inner strict operational environment of backward wave tube, and the leakage problem of avoiding adjustment structure to cause, the inner-cavity structure of backward wave tube generally is designed to unadjustable structure.But development along with microwave technology, the state-of-the-art that is limited to the power source platform, according to the synthetic requirement of power, backward wave tube is by the adjusting of inner-cavity structure, changing interactional resonance frequency between electron beam and the device, thereby make the microwave output frequency scalable of backward wave tube.
Summary of the invention
In order to overcome the nonadjustable problem of backward wave tube output microwave frequency in the prior art, the utility model provides a kind of tunable backward wave tube, thereby can reach the adjustable purpose of backward wave tube output microwave frequency by the inner chamber adjusting to search out desirable inner chamber spacing.
Tunable backward wave tube of the present utility model, contain housing and inner chamber, be characterized in: described inner chamber is divided into right inner chamber and left inner chamber, nut is connected with right inner chamber, screw rod and nut are formed screw mechanism, the enclosed environment that screw mechanism places stuffing box and seal cover to form, the screw rod rotation drives the nut moving linearly, does along the rectilinear motion of inner chamber axial direction thereby make nut drive right inner chamber.
The screw rod of described screw mechanism is by driven by motor, and motor is arranged in the enclosed environment that stuffing box and seal cover form, and the fairlead of motor seals with fluid sealant.
The screw rod of described screw mechanism is by driven by motor, and motor is arranged on the outside of stuffing box, and the casing of drive axle of motor and stuffing box adopts movable sealing structure to seal.
The utility model is divided into left inner chamber and right inner chamber two parts with inner chamber, by being set, screw rod and nut form screw mechanism in stuffing box, nut is connected with right inner chamber, drive screw, the motion of drive nut, do along the rectilinear motion of inner chamber axial direction thereby drive right inner chamber, to realize regulating the purpose of the spacing between the left and right inner chamber.Because the enclosed environment that screw mechanism places stuffing box and seal cover to form, can avoid the leakage that may occur, thereby can not influence the vacuum or the pressurized environment of device system work because the distance regulating mechanism of left and right inner chamber is set.Owing to adopted screw mechanism this rectilinear motion governor motion form, the spacing between the left and right inner chamber is easy to adjust, and structure is very simple, and is cheap for manufacturing cost, easy and simple to handle.
Description of drawings
Below in conjunction with accompanying drawing a kind of adjustable backward wave tube of the present utility model is described in detail.
Fig. 1 is a structural representation in axial direction of the present utility model.
1. stuffing box 2. motors 3. bearings 4. screw rods 5. nuts 6. right inner chamber 7. left inner chamber 8. seal covers 9. housings
Embodiment
As can be seen from Figure 1, in the utility model, the inner chamber of backward wave tube is divided into right inner chamber 6 and left inner chamber 7, and places in the housing 9; Nut 5 is connected with right inner chamber 6, and screw rod 4 is supported on the bearing 3 and with motor 2 and is connected, and screw rod 4 is formed screw mechanisms with nut 5, drives right inner chamber 6 and does in axial direction rectilinear motion, thereby regulate the clearance distance between right inner chamber 6 and the left inner chamber 7.
In order to guarantee that backward wave tube the time is in whole sealing status in work, screw rod 4 is formed screw mechanisms with nut 5 place stuffing box 1, cover on the stuffing box 1 with seal cover 8 during work and seal.The lead-in wire of motor 2 passes stuffing box 1 and links to each other with power supply, and fairlead carries out fixed sealing with fluid sealant.
Because the distance regulating mechanism of right inner chamber 6 and left inner chamber 7 is placed in the enclosed environment of stuffing box 1, just can avoid the leakage that may occur, thereby can not influence the vacuum or the pressurized environment of device system work because the distance regulating mechanism of right inner chamber 6 and left inner chamber 7 is set.
If the environment of backward wave tube work is not too high to the requirement of sealing, the motor 2 of the distance regulating mechanism of so right inner chamber 6 and left inner chamber 7 can be placed on the outside of stuffing box 1, like this, the wall of the power transmission shaft of motor 2 and stuffing box 1 can adopt movable sealing structure to seal.
Claims (3)
1. tunable backward wave tube, contain housing and inner chamber, it is characterized in that: described inner chamber is divided into right inner chamber (6) and left inner chamber (7), nut (5) is connected with right inner chamber (6), screw rod (4) is formed screw mechanism with nut (5), the enclosed environment that screw mechanism places stuffing box (1) and seal cover (8) to form, screw rod (4) rotation drives nut (5) moving linearly, does along the rectilinear motion of inner chamber axial direction thereby make nut (5) drive right inner chamber (6).
2. tunable backward wave tube according to claim 1, it is characterized in that: the screw rod (4) of described screw mechanism is driven by motor (2), motor (2) is arranged in the enclosed environment of stuffing box (1) and seal cover (8) composition, and the fairlead of motor (2) seals with fluid sealant.
3. tunable backward wave tube according to claim 1, it is characterized in that: the screw rod (4) of described screw mechanism is driven by motor (2), motor (2) is arranged on the outside of stuffing box (1), and the casing of the power transmission shaft of motor (2) and stuffing box (1) adopts movable sealing structure to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920318049 CN201629290U (en) | 2009-12-22 | 2009-12-22 | Tunable backward wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920318049 CN201629290U (en) | 2009-12-22 | 2009-12-22 | Tunable backward wave tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629290U true CN201629290U (en) | 2010-11-10 |
Family
ID=43060688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920318049 Expired - Lifetime CN201629290U (en) | 2009-12-22 | 2009-12-22 | Tunable backward wave tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208315A (en) * | 2011-04-26 | 2011-10-05 | 中国人民解放军国防科学技术大学 | Compact relativity backward wave oscillator (RBWO) with adjustable low-frequency-range frequency |
| CN106298407A (en) * | 2016-09-09 | 2017-01-04 | 中国工程物理研究院应用电子学研究所 | A kind of three controlled high-power pulsed ion beams of frequency |
-
2009
- 2009-12-22 CN CN 200920318049 patent/CN201629290U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208315A (en) * | 2011-04-26 | 2011-10-05 | 中国人民解放军国防科学技术大学 | Compact relativity backward wave oscillator (RBWO) with adjustable low-frequency-range frequency |
| CN102208315B (en) * | 2011-04-26 | 2012-11-14 | 中国人民解放军国防科学技术大学 | Compact relativity backward wave oscillator (RBWO) with adjustable low-frequency-range frequency |
| CN106298407A (en) * | 2016-09-09 | 2017-01-04 | 中国工程物理研究院应用电子学研究所 | A kind of three controlled high-power pulsed ion beams of frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |
|
| CX01 | Expiry of patent term |