CN201758111U - Four stage depressed collector used for space traveling-wave tubes - Google Patents
Four stage depressed collector used for space traveling-wave tubes Download PDFInfo
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- CN201758111U CN201758111U CN2010201155717U CN201020115571U CN201758111U CN 201758111 U CN201758111 U CN 201758111U CN 2010201155717 U CN2010201155717 U CN 2010201155717U CN 201020115571 U CN201020115571 U CN 201020115571U CN 201758111 U CN201758111 U CN 201758111U
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Abstract
The utility model discloses a four stage depressed collector used for space traveling-wave tubes. The front three stages of the inner core adopt the oxygen-free copper material with the petal structure, and the fourth stage adopts the titanium material with flat panel needle-like structure. The ceramic adopts the beryllium oxide material with good heat dissipation capability, and the housing and the rear cover adopt the kovar 4J34 material. The port of the inner core of the first stage of the collector is inserted into the output chamber, and is disposed on the center of the last magnetic sheet of the focusing area. The radius of the port is double that of the electron beam channel, and the part insterted into the chamber adopts the molybdenum material, which is anti-electron bombardment. The voltage leads of all stages of the collector are led from the end cover through the insulator, and the comb of the connection titanium pump is welded on the end cover. The utility model has advantages of high efficiency, light weight, small size, strong heat dissipation capability, high reliability, and applicability in the space traveling-wave tubes.
Description
Technical field
The utility model belongs to microwave electron tube field, specifically a kind of level Four depressed collector structure that is used for space travelling wave tube.
Background technology
Space travelling wave tube is the main microwave power amplifier unit of space flight payload system, is widely used in communication and navigation transponder, high speed data transmission system, microwave remote sensing instrument and the TT﹠C system of satellite payload system.The more common travelling wave tube of space travelling wave tube has the efficient height, volume is little, in light weight and series of advantages such as reliability height, and it is big therefore to develop difficulty, the design and processes level is required high.
In principle, the electronics of travelling wave tube is annotated after giving increasing wave with portion of energy, and remaining energy will become heat energy loss and fall when electronics is stamped collector, in order to improve the efficient of travelling wave tube, just should take measures to reduce this a part of energy loss.The energy of consumption on collector is relevant with the current potential of collector, if the collector current potential is lower than the current potential of slow wave system, decelerating field has then just appearred between slow wave system and the collector, the collector current potential is low more, and decelerating field is strong more, and decelerating field suffered when electronics leaves slow wave system and enters collector is big more, the speed that electronics is stamped collector is more little, the energy of consumption on collector is also more little, simultaneously, can also reduce the requirement to cooling system.
After the collector step-down, efficient obviously improves, but the voltage of collector is not to fall low more well more yet.Because after electronics notes and the microwave signal positive energy exchange, the scattered phenomenon of serious speed can occur.What enter collector area is that the electronics with VELOCITY DISTRIBUTION is annotated, catcher voltage is crossed when hanging down, many low-velocity electrons can not overcome the decelerating field between slow wave system and collector and stamp collector, and these electronics in the slow wave system district, have been upset the operate as normal of travelling wave tube with wraparound.In order to overcome this phenomenon, can adopt multi-level depressurization collector, the electronics of friction speed is carried out the most effective " energy recuperation ".
The utility model content
The purpose of this utility model provides a kind of level Four depressed collector structure in space travelling wave tube, to satisfy TWT efficiency height between the space, volume is little, in light weight and reliability is high requirement.
In order to achieve the above object, the technical scheme that the utility model adopted is:
A kind of level Four depressed collector structure that is used for space travelling wave tube, comprise cylindrical case, it is characterized in that: the inner core that is provided with the coaxial setting of level Four in the shell, first order inner core is the taper plate-like of hollow, conical disc front end protuberance is communicated with port, described port stretches out shell from shell one end housing mouth, the barb that the circumference of the discoid rear end of first order inner core is provided with, second level inner core, third level inner core is tubular, second, be respectively arranged with barb on the two ends circumference of third level inner core, inner core front portion, the second level stretches in the described first order inner core for protuberance, described first order inner core, second level inner core links to each other successively with third level inner core and inside communicates, also be provided with the pottery that is enclosed within first three grade inner core outside in the cavity between first three grade inner core and shell, fourth stage inner core is a tabular, be positioned at described third level inner core posterior end tube port position, center at fourth stage inner core is connected with thimble, described thimble stretches in the third level inner core along third level inner core central axis, and described fourth stage inner core back is connected with pottery; Also include the end cap that covers at shell other end faucal, have a plurality of through holes on the end cap, a plurality of insulators are installed in respectively in the through hole of end cap, also are connected with the comb that is communicated with cavity in the shell on the described end cap.
Described a kind of level Four depressed collector structure that is used for space travelling wave tube, it is characterized in that: described shell is divided into two sections, and one section shell is enclosed within outside described first order inner core and the second level inner core, and another section shell is enclosed within outside described third level inner core and the fourth stage inner core.
Described a kind of level Four depressed collector structure that is used for space travelling wave tube, it is characterized in that: described shell and end cap all adopt and can cut down material, end cap is circular end cap, have four through holes that are evenly distributed on the end cap on the end cap, described insulator has three, be installed in respectively in three through holes, be communicated with comb on another through hole.
Described a kind of level Four depressed collector structure that is used for space travelling wave tube, it is characterized in that: described first three grade inner core all adopts oxygenless copper material to make, and the port of first order inner core adopts Mo to make.
Described a kind of level Four depressed collector structure that is used for space travelling wave tube is characterized in that: fourth stage inner core adopts the titanium material to make.
Described a kind of level Four depressed collector structure that is used for space travelling wave tube, it is characterized in that: described pottery is made for the beryllium oxide material.
The utility model is made up of inner core, pottery, shell (dividing two sections) and end cap.
According to the level Four depressed collector structure that is used for space travelling wave tube of the present utility model, its first three grade of inner core employing has the oxygenless copper material of petal design; The fourth stage adopts dull and stereotyped acicular texture, and material selection has the titanium of pumping property, can improve the vacuum degree of travelling wave tube.Pottery adopts the beryllium oxide material with good heat radiating ability, and shell and bonnet adopt can cut down the 4J34 material.
According to the level Four depressed collector structure that is used for space travelling wave tube of the present utility model, collector first order inner core adopts the version that port is put in the output bin, port is placed on the center of the last a slice magnetic sheet in focal zone, and the opening radius is taken as 2 times of electronics notes channel radius.The part that puts in bin adopts the Mo of anti-electron bombard, guarantees under the high temperature indeformable.
According to the level Four depressed collector structure that is used for space travelling wave tube of the present utility model, be welded with four insulators and a comb on its end cap, insulator is used to pass the voltage lead of collector at different levels, and comb is used to weld the exhaust that titanium pump carries out travelling wave tube.
The invention has the beneficial effects as follows that the electronics organic efficiency of calculating is up to 72.51%, it is 66.6% that actual test obtains the electronics organic efficiency, has improved the gross efficiency of pipe greatly.In addition, this lightweight construction, volume is little, heat-sinking capability is strong, has very high reliability, is fit to be applied to space travelling wave tube.
Description of drawings
Fig. 1 is the utility model result of calculation schematic diagram.
Fig. 2 is the utility model structure cutaway view.
Fig. 3 is the utility model first order core arrangement figure, wherein:
Fig. 3 a is a cutaway view, and Fig. 3 b is a vertical view.
Fig. 4 is the utility model end cap vertical view.
Embodiment
A kind of level Four depressed collector structure that is used for space travelling wave tube comprises cylindrical case, and shell can be divided into two sections, and one section shell 1 is enclosed within outside first order inner core 3 and the second level inner core 4, and another section shell 2 is enclosed within outside third level inner core 5 and the fourth stage inner core 6.Be provided with the inner core of the coaxial setting of level Four in the shell, first order inner core 3 is the taper plate-like of hollow, conical disc front end protuberance is communicated with port, port stretches out shell from shell 1 one end housing mouths, the barb that the circumference of the discoid rear end of first order inner core 3 is provided with, second level inner core 4, third level inner core 5 is tubular, second, third level inner core 4, be respectively arranged with barb on 5 the two ends circumference, inner core 4 front portions in the second level stretch in the first order inner core 3 for protuberance, first order inner core 3, second level inner core 4 links to each other successively with third level inner core 5 and inside communicates, first three grade inner core 3,4,5 all adopt oxygenless copper material to make, and the port of first order inner core 3 adopts Mo to make.Also be provided with the pottery 7 that is enclosed within first three grade inner core outside in the cavity between first three grade inner core 3,4,5 and shell, pottery 7 is made for the beryllium oxide material.Fourth stage inner core 6 is a tabular, is positioned at third level inner core 5 posterior end tube port positions, and fourth stage inner core 6 adopts the titanium material to make.Be connected with thimble 8 at the center of fourth stage inner core 6, thimble 8 stretches in the third level inner core 5 along third level inner core 6 central axis, and fourth stage inner core 6 backs are connected with pottery; Pottery is made for the beryllium oxide material.Also include the end cap 9 that covers at shell other end faucal, shell 1,2 and end cap 9 all adopt can cut down material, end cap 9 is circular end cap, have four through holes that are evenly distributed on the end cap 9 on the end cap 9, insulator 10 has three, be installed in respectively in three through holes, be communicated with comb 11 on another through hole.
1) principle design of inner core.Annotate in the importing level Four depressed collector model utilizing large-signal analysis software to annotate the electronics with VELOCITY DISTRIBUTION that obtains after the ripple mutual effect is calculated, adjust voltage and shape at different levels, finally obtaining energy recovery efficiency is 72.51%, and its result of calculation is seen Fig. 1.
2) determine the spacing of collector inner cores at different levels according to the withstand voltage limit of vacuum.For guaranteeing that space travelling wave tube has sufficiently high reliability, the withstand voltage limit of vacuum is pressed 8000V/mm and is calculated, and when carrying out structural design, multiply by one again on the withstand voltage distance that aforementioned calculation obtains and is higher than 2 coefficient of safety.
3) body according to pottery punctures the limit and the surface withstand voltage limit, determines the size of potteries at different levels.The body of pottery punctures the limit and calculates according to 20000V/mm, and the withstand voltage limit of ceramic surface is calculated according to 1000V/mm, multiply by one equally on the withstand voltage distance that calculates during structural design and is higher than 2 coefficient of safety.For guaranteeing heat radiation, the length of pottery designs according to the power sedimentation situation on the inner cores at different levels.
4) according to oxygen-free copper, beryllium oxide with can cut down the coefficient of expansion under hot, determine the fit dimension between inner core, pottery and shell, guarantee high temperature down during welding pottery can not rupture.
5) with first order inner core, outside pottery and first section shell are welded into first order collector assembly.
6) second level inner core is become second level collector assembly with the ceramic welding of outside.
7) with the 3rd utmost point inner core, outside pottery and another section shell are welded into third level collector assembly.
8) fourth stage inner core is become fourth stage collector assembly with the ceramic welding of outside.
9) first order collector assembly, second level collector assembly, third level collector components and fourth stage collector assembly are welded into the collector assembly.
10) collector assembly and end cap are welded, form level Four depressed collector structure.
Claims (6)
1. level Four depressed collector structure that is used for space travelling wave tube, comprise cylindrical case, it is characterized in that: the inner core that is provided with the coaxial setting of level Four in the shell, first order inner core is the taper plate-like of hollow, conical disc front end protuberance is communicated with port, described port stretches out shell from shell one end housing mouth, the barb that the circumference of the discoid rear end of first order inner core is provided with, second level inner core, third level inner core is tubular, second, be respectively arranged with barb on the two ends circumference of third level inner core, inner core front portion, the second level stretches in the described first order inner core for protuberance, described first order inner core, second level inner core links to each other successively with third level inner core and inside communicates, also be provided with the pottery that is enclosed within first three grade inner core outside in the cavity between first three grade inner core and shell, fourth stage inner core is a tabular, be positioned at described third level inner core posterior end tube port position, center at fourth stage inner core is connected with thimble, described thimble stretches in the third level inner core along third level inner core central axis, and described fourth stage inner core back is connected with pottery; Also include the end cap that covers at shell other end faucal, have a plurality of through holes on the end cap, a plurality of insulators are installed in respectively in the through hole of end cap, also are connected with the comb that is communicated with cavity in the shell on the described end cap.
2. a kind of level Four depressed collector structure that is used for space travelling wave tube according to claim 1, it is characterized in that: described shell is divided into two sections, one section shell is enclosed within outside described first order inner core and the second level inner core, and another section shell is enclosed within outside described third level inner core and the fourth stage inner core.
3. a kind of level Four depressed collector structure that is used for space travelling wave tube according to claim 1, it is characterized in that: described shell and end cap all adopt and can cut down material, end cap is circular end cap, have four through holes that are evenly distributed on the end cap on the end cap, described insulator has three, be installed in respectively in three through holes, be communicated with comb on another through hole.
4. a kind of level Four depressed collector structure that is used for space travelling wave tube according to claim 1, it is characterized in that: described first three grade inner core all adopts oxygenless copper material to make, and the port of first order inner core adopts Mo to make.
5. a kind of level Four depressed collector structure that is used for space travelling wave tube according to claim 1 is characterized in that: fourth stage inner core adopts the titanium material to make.
6. a kind of level Four depressed collector structure that is used for space travelling wave tube according to claim 1, it is characterized in that: described pottery is made for the beryllium oxide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201155717U CN201758111U (en) | 2010-02-09 | 2010-02-09 | Four stage depressed collector used for space traveling-wave tubes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201155717U CN201758111U (en) | 2010-02-09 | 2010-02-09 | Four stage depressed collector used for space traveling-wave tubes |
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| CN201758111U true CN201758111U (en) | 2011-03-09 |
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| CN2010201155717U Expired - Fee Related CN201758111U (en) | 2010-02-09 | 2010-02-09 | Four stage depressed collector used for space traveling-wave tubes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403178A (en) * | 2011-11-24 | 2012-04-04 | 安徽华东光电技术研究所 | Travelling wave tube collector assembly and assembly process thereof |
| CN102446675A (en) * | 2011-12-02 | 2012-05-09 | 安徽华东光电技术研究所 | Space traveling wave tube collector inner core and manufacturing process thereof |
| CN103441054A (en) * | 2013-09-22 | 2013-12-11 | 成都国光电气股份有限公司 | Traveling wave tube collector |
| CN111105966A (en) * | 2019-12-09 | 2020-05-05 | 南京三乐集团有限公司 | High-efficiency high-power pulse space traveling wave tube four-stage depressed collector structure |
-
2010
- 2010-02-09 CN CN2010201155717U patent/CN201758111U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403178A (en) * | 2011-11-24 | 2012-04-04 | 安徽华东光电技术研究所 | Travelling wave tube collector assembly and assembly process thereof |
| CN102446675A (en) * | 2011-12-02 | 2012-05-09 | 安徽华东光电技术研究所 | Space traveling wave tube collector inner core and manufacturing process thereof |
| CN103441054A (en) * | 2013-09-22 | 2013-12-11 | 成都国光电气股份有限公司 | Traveling wave tube collector |
| CN103441054B (en) * | 2013-09-22 | 2016-06-08 | 成都国光电气股份有限公司 | A kind of traveling-wave tube collector |
| CN111105966A (en) * | 2019-12-09 | 2020-05-05 | 南京三乐集团有限公司 | High-efficiency high-power pulse space traveling wave tube four-stage depressed collector structure |
| CN111105966B (en) * | 2019-12-09 | 2022-07-01 | 南京三乐集团有限公司 | High-efficiency high-power pulse space traveling wave tube four-stage depressed collector structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20150209 |
|
| EXPY | Termination of patent right or utility model |