CN205543447U - Highly reliable intermediate frequency cable towards multiple extreme environments - Google Patents
Highly reliable intermediate frequency cable towards multiple extreme environments Download PDFInfo
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- CN205543447U CN205543447U CN201620114737.0U CN201620114737U CN205543447U CN 205543447 U CN205543447 U CN 205543447U CN 201620114737 U CN201620114737 U CN 201620114737U CN 205543447 U CN205543447 U CN 205543447U
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Abstract
The utility model relates to a highly reliable intermediate frequency cable towards multiple extreme environments, including cable and connector, the cable includes one signal line, three -strand three -phase output power supply line, one ground wire, the one signal line is placed in the cable center, and three -strand three -phase output power supply line is arranged in the symmetry all around of signal line with the one ground wire, be covered with the multilayer crust at three -phase output power supply line and ground wire outsourcing, the connector is installed at the both ends of cable, carries out in the hood the sealed processing with the outer coating high temperature putty of hood of encapsulating to the connector, can use at multiple extreme environments.
Description
Technical field
This utility model belongs to New Launch technical field, relates to the highly reliable immediate frequency cable towards multiple extreme environment.
Background technology
For new type low temperature carrier rocket, the test of liquid hydrogen circulating precooling is an important tests flow process before rocket firing is taken off, and on arrow, liquid hydrogen circulating pump is pulled out de-cable drive of pulling out on cable and arrow by variable-frequency power sources by ground emaciated face and exports nominal torque.
A new generation's carrier rocket uses cryogenic liquid propellant liquid hydrogen (subzero 252 DEG C), liquid oxygen (subzero 183 DEG C), after cryogenic propellant filling, rocket body internal stability is extremely low, condensed water is covered on rocket body surface, and normal cable adapter does not possess low temperature fire resistance characteristic, it is impossible to adapt to the demand of new type low temperature carrier rocket.
De-on arrow pulling out cable and ground emaciated face is pulled out the interface of cable and is positioned at rocket body one-level rear, when rocket firing, ground emaciated face pulls out the flame that cable needs to bear about 1000K and the 370kw/m continuing 12 seconds2Hot-fluid, the conventional cable not possessing burn-out-proof characteristic and adapter are very likely by impaired after electromotor flame ablation, and cause land cable normally to come off, and affect the normal transmission of rocket.
Owing to circulating pump installation site and variable-frequency power sources deployed position between the headend equipment of target range in rocket body is limited, the impact on variable-frequency power sources output power supply quality of the long cable cannot be evaded, be important to consider that long cable couples produced resonance problems with the load characteristic of low temperature electric machine.The cable produced by conventional design exists that capacitive coupling is bigger and unbalanced problem, and liquid hydrogen circulating pump may be caused normally to work.
Utility model content
The problem that this utility model solves is: overcome the deficiencies in the prior art, it is provided that a kind of highly reliable immediate frequency cable towards multiple extreme environment, it is possible to use at multiple extreme environment.
The technical solution of the utility model is: a kind of highly reliable immediate frequency cable towards multiple extreme environment, including cable and adapter；Cable includes one holding wire, three strands of three-phases output supply lines, one ground wires；One holding wire is positioned over cable center, and three strands of three-phases export supply lines and one ground wire surrounding symmetry arrangement at holding wire；It is coated with multilamellar crust outside three-phase output supply lines and ground wire；The two ends of cable are provided with adapter, and adapter carries out sealant pouring and sealing and the process of coating high temperature putty outside hood in hood.
Described multilamellar crust includes the most successively: two-layer refractory layer, two-layer fireprotection layer, one layer of braid, one layer of screen layer, one layer of radiation protective layer, one layer of fluoroplastic insulation layer, one layer of flame retardant type high tensile tear silicone rubber jacket and one layer of rustless steel open armoring.
Two point two-wire is all used to design inside one holding wire described, three strands of three-phase output supply lines and one ground wire, a contact in the heart yearn of the most per share equal two multiple twins of intension, and every heart yearn welding electric connector.
The YF19 series circle separation connector that the adapter that described cable one end is installed selects model to be Hangzhou Astronautic Electronic Technology Co., Ltd., the YMC series circle waterproof electrical connector of China Aviation Optical-Electrical Technology Co., Ltd selected by the adapter that the other end is installed.
This utility model advantage compared with prior art is:
1) by sealant pouring and sealing in YMC series circle waterproof electrical connector hood, can effectively prevent the rocket cryogenic propellant such as liquid hydrogen, liquid oxygen filling after to external world environment (liquid hydrogen filling after the most subzero 15 DEG C of rocket body temperature, humidity is up to 98%, the moisture such as condensation, frosting produced by) immerse, the sealing property of 100%, suppression insulating performance of cable is kept to decline.
2) by the high temperature resistant burn-out-proof of multilayer cable crust being designed and applying the design of high temperature burning proof putty outside YF19 series circle separation connector hood so that take off and pull out the flame of about 1000K and the 370kw/m of lasting 12 seconds when cable can bear rocket firing2Hot-fluid, and the separation that still is able in the process to realize to be energized normally comes off.
3) by one holding wire within immediate frequency cable, three phase supply line and ground wire are carried out symmetric design, improve the equilibrium response of the internal capacitive coupling of immediate frequency cable, reduce the three characteristics of the middle term uneven and cause driving motor that abnormal failure occurs, improve transmission quality.
4) by the two point two-wire of one holding wire, three strands of three phase supply lines and one ground wire is designed, thoroughly prevent because of bad caused a signal Transmission problem of contacts in a heart yearn fracture or electric connector, improve transmission reliability.
Accompanying drawing explanation
Fig. 1 is a kind of cryogen circulating pump motor TT&C system schematic diagram；
Fig. 2 is the highly reliable immediate frequency cable design frame chart towards multiple extreme environment；
Fig. 3 is the cable inner holding wire of highly reliable immediate frequency cable, supply lines and ground wire position view；
Fig. 4 is the cable multilamellar crust composition schematic diagram of reliable immediate frequency cable.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
A kind of cryogenic propellant circulating pump motor drive system as shown in Figure 1, wherein, the YMC series circle waterproof electrical connector of Intermediate frequency power supply system cable one end is connected on the circulating pump permagnetic synchronous motor during liquid hydrogen propellant soaks, due to the effect of liquid hydrogen propellant (subzero 252 DEG C) at this, after repropellenting, temperature is up to subzero 20～30 DEG C, and humidity is up to 98%.Just below rocket jet, the flame of about 1000K and the 370Kw/m continuing 12 seconds when this is in rocket firing, can be there is in the YF19 series circle separation connector present position of the Intermediate frequency power supply system cable other end2Hot-fluid.
Cryogenic propellant circulating pump motor drive system i.e. begins to power up work after liquid hydrogen repropellenting, owing to circulating pump motor selects permagnetic synchronous motor, it has higher quality requirements, the balance of special requirement three phase supply to the capacitive coupling Spreading requirements of the three strands of three phase supply lines in immediate frequency cable inside.
Additionally, cryogenic propellant circulating pump motor drive system is after firing, needing to be sent discrete level signal by rear end Combat Command System, instruction YF19 series circle separation connector performs separation and comes off action.Defiber in YF19 series circle separation connector hood wraps in after receiving above-mentioned discrete level signal, and driving within this electric connector hood is lock construction action, finally realizes separation and comes off.
For guaranteeing that the reliable power supply output under low temperature and high relative humidity environment of the above-mentioned immediate frequency cable and reliable separation after firing come off, as shown in Figure 2, the present invention, in terms of the design of low temp. electric adapter type selecting, the process of electric connector sealant pouring and sealing, burn-out-proof cable designs, electric connector high temperature putty coating process, three-phase line balanced design and two point featuring diplonema redundancy is several, devises a kind of highly reliable immediate frequency cable towards multiple extreme environment.
Highly reliable immediate frequency cable towards multiple extreme environment is made up of cable and adapter two parts.As it is shown on figure 3, cable includes one holding wire, three strands of three-phase output supply lines and one ground wire.For improving the equilibrium response between three strands of three-phase output supply lines, reducing the deviation of its capacitive coupling, its arrangement is carried out symmetric design: one holding wire is positioned over cable centerline, three strands of three-phases export supply lines and one ground wire surrounding symmetry arrangement at holding wire.
Immediate frequency cable i.e. starts normal power-up work after liquid hydrogen repropellenting, owing to the power supply signal of its internal transmission is that three-phase 380V exchanges forceful electric power signal, and external temperature and humidity environment are in low temperature, high humidity state for a long time, decreasing insulating easily occurs, and then causes cable electric leakage, short circuit or even breakdown problem to occur.For preventing above-mentioned phenomenon from occurring, sealant pouring and sealing is taked to process (sealing type selecting is: GD414 silicone rubber) in the hood of YMC series circle waterproof electrical connector.Need to carry out in advance primer coating before sealant pouring and sealing: make glue flow between each binding post in YMC series circle waterproof electrical connector hood, lead-in wire with bamboo let water conservancy diversion, make to be full of glue between each binding post, lead-in wire, and insulation board face cable jacket termination and electric connector wiring terminal around is completely covered.After primer solidifies, the method taking repeated multiple times embedding/solidification, until encapsulating completes.(an encapsulating thickness is usually no more than 5mm, and room temperature stands hardening time and is generally 24 hours.)
Due to the high temperature sintering of flame hot-fluid, immediate frequency cable likely occurs that the following two kinds abnormal conditions cause the YF19 series circle separation connector cannot normal separation after firing:
(1) there is fusing phenomenon because of high temperature sintering in the cable of immediate frequency cable, causes YF19 series circle separation connector cannot be normally received separation signal.For preventing this signal transmission abnormality disruption, immediate frequency cable is used the multilamellar crust design of calcination high temperature resistant, anti-, as shown in Figure 4, it includes the most successively: two-layer refractory layer (being resistant to the high temperature of 1500 DEG C), two-layer fireprotection layer (can resist the flame calcination of 1200 DEG C), one layer of braid, one layer of screen layer, one layer of radiation protective layer, one layer of fluoroplastic insulation layer, one layer of flame retardant type high tensile silicone rubber jacket and one layer of rustless steel open armoring.
(2) it is that latch mechanism frame for movement fault occurs because of high temperature sintering within immediate frequency cable circle separation connector, causes being that latch mechanism cannot normally perform separation and comes off action.For preventing this from being latch mechanism mechanical breakdown problem, take high temperature putty coating to process to outside circular separation connector hood, improve this electric connector adaptability to high temperature sintering environment.(the YJ-66A high temperature putty that north coatings industry designs selected by high temperature putty.)
Finally, for improving the reliability of immediate frequency cable transmission line further, as shown in Figure 3, to the Redundancy Design all taking two point two-wire inside one holding wire within the highly reliable immediate frequency cable of multiple extreme environment, three strands of three-phase output supply lines and one ground wire, that is: a contact in the heart yearn of per share two multiple twins of equal intension, and every heart yearn welding electric connector.When heart yearn fracture in cable or a contacts in electric connector are bad, immediate frequency cable still can normally, reliably working.
Claims (4)
1. the highly reliable immediate frequency cable towards multiple extreme environment, it is characterised in that: include cable and adapter；Cable includes one holding wire, three strands of three-phases output supply lines, one ground wires；One holding wire is positioned over cable center, and three strands of three-phases export supply lines and one ground wire surrounding symmetry arrangement at holding wire；It is coated with multilamellar crust outside three-phase output supply lines and ground wire；The two ends of cable are provided with adapter, and adapter carries out sealant pouring and sealing and the process of coating high temperature putty outside hood in hood.
A kind of highly reliable immediate frequency cable towards multiple extreme environment the most according to claim 1, it is characterised in that: described multilamellar crust includes the most successively: two-layer refractory layer, two-layer fireprotection layer, one layer of braid, one layer of screen layer, one layer of radiation protective layer, one layer of fluoroplastic insulation layer, one layer of flame retardant type high tensile tear silicone rubber jacket and one layer of rustless steel open armoring.
A kind of highly reliable immediate frequency cable towards multiple extreme environment the most according to claim 1, it is characterized in that: inside one holding wire described, three strands of three-phase output supply lines and one ground wire, all use two point two-wire to design, a contact in the heart yearn of the most per share two multiple twins of equal intension, and every heart yearn welding electric connector.
A kind of highly reliable immediate frequency cable towards multiple extreme environment the most according to claim 1, it is characterized in that: the YF19 series circle separation connector that the adapter that described cable one end is installed selects model to be Hangzhou Astronautic Electronic Technology Co., Ltd., the YMC series circle waterproof electrical connector of China Aviation Optical-Electrical Technology Co., Ltd selected by the adapter that the other end is installed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620114737.0U CN205543447U (en) | 2016-02-04 | 2016-02-04 | Highly reliable intermediate frequency cable towards multiple extreme environments |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620114737.0U CN205543447U (en) | 2016-02-04 | 2016-02-04 | Highly reliable intermediate frequency cable towards multiple extreme environments |
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| CN205543447U true CN205543447U (en) | 2016-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156694A (en) * | 2021-10-29 | 2022-03-08 | 北京宇航系统工程研究所 | Electric system rocket-ground interface design method for improving fault tolerance |
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2016
- 2016-02-04 CN CN201620114737.0U patent/CN205543447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156694A (en) * | 2021-10-29 | 2022-03-08 | 北京宇航系统工程研究所 | Electric system rocket-ground interface design method for improving fault tolerance |
| CN114156694B (en) * | 2021-10-29 | 2023-08-01 | 北京宇航系统工程研究所 | Design method for arrow ground interface of electrical system for improving fault tolerance |
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