CN208923355U - A kind of medium wave transmitter antenna feeder line automation changeover apparatus - Google Patents
A kind of medium wave transmitter antenna feeder line automation changeover apparatus Download PDFInfo
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- CN208923355U CN208923355U CN201821276332.2U CN201821276332U CN208923355U CN 208923355 U CN208923355 U CN 208923355U CN 201821276332 U CN201821276332 U CN 201821276332U CN 208923355 U CN208923355 U CN 208923355U
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- transmitter
- vacuum contactor
- antenna feeder
- vacuum
- standby
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Abstract
A kind of medium wave transmitter antenna feeder line automation changeover apparatus, includes switching action device and logic control device；Switching action device includes two mechanical structures and the identical double-pole double throw vacuum contactor of electric property in parallel；The normal-closed end A1 of vacuum contactor A, the normal-closed end B1 of vacuum contactor B are connected with primary transmitter；The normally open end A2 of vacuum contactor A, the common end A2 of vacuum contactor B are connected with standby transmitter；The common end A3 of vacuum contactor A is connected with antenna feeder；The common end B3 of vacuum contactor B is connected with fictitious load；Double-linkage switch is in the close position under inspecting state, after any transmitter starting, passes through the K of primary transmitter1, standby transmitter K2Achievable booting；Switch that speed is fast with transmitter, the high feature of overhaul efficiency.
Description
Technical field
The utility model belongs to transmitter feedback line changeover apparatus technical field, and in particular to a kind of medium wave transmitter antenna feeder
Line automation changeover apparatus.
Background technique
The transmitter feedback line changeover apparatus that MW Transmitting Station uses, it is desirable that, can rapidly, reliably after host breaks down
Antenna feeder is switched to standby transmitter, while in order to which maintenance is rapidly completed in broadcast slot, it is desirable that active and standby transmitting function is mutual
Starting while influence.
Currently, common list vacuum contactor is switched and switches two kinds of electronic switchover modes with motor.Both devices are using
In come with some shortcomings.Single vacuum contactor is only limitted to switch between active and standby transmitter and antenna feeder, can not be in broadcast time
It is interior to carry out the work such as transmitter maintenance, test using fictitious load, and during normal broadcast, there are two transmitters to open simultaneously
Dynamic risk；Motor changeover apparatus installation space is larger, influences that transmitter room is overall beautiful, then due to the versatility of such equipment
Matter needs that switching action is manually operated, and is not fully appropriate for all transmitting types, and computer room operating instruction cannot be unified, to value
Machine and management are made troubles.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, the purpose of the present invention is to provide a kind of medium wave transmitter antenna feeder is automatic
Change changeover apparatus, a set of four port switchings device improvement project that the utility model uses is set completely in accordance with actual use demand
Meter makes active and standby transmitter work in the case where broadcasting and overhauling two kinds of working conditions only by conversion Double-linkage switch；With transmitter
Switch that speed is fast, the high feature of overhaul efficiency.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: medium wave transmitter antenna feeder line automation
Changeover apparatus, includes switching action device and logic control device, and switching action device includes two mechanical structures in parallel
With the identical double-pole double throw vacuum contactor of electric property；
The normal-closed end A1 of vacuum contactor A, the normal-closed end B1 of vacuum contactor B are connected with primary transmitter；Vacuum contact
The normally open end A2 of device A, the common end A2 of vacuum contactor B are connected with standby transmitter；The common end A3 of vacuum contactor A with
Antenna feeder is connected；The common end B3 of vacuum contactor B is connected with fictitious load.
The vacuum contactor use JPK-11/008 double-pole double throw low-vacuum load-tripping device, rated operational voltage 13KV,
Single contact rated current 35A.
The switching action device is set there are four radiofrequency signal port.Realize host, standby host in antenna feeder and fictitious load
It switches between the two；In practical application, two groups of contacts are connected using copper strips, and parallel operation further increases the reliability of device.
The switching action device includes standby host amplifier power supply A.C. contactor, and standby host amplifier power supply A.C. contactor will
Alternating current input switch power supply drives the movement of relay line packet by the logic control switch power supply of DC leadout road.
The beneficial effects of the utility model are:
Compared with prior art, the utility model occurs in use for medium wave broadcast transmitter antenna feeder changeover apparatus
The drawbacks of, the construction requirements of the combining standardized station propose a set of practicable Tronsformation Design of Automation of Up to original system, mention
The speed that high transmitter is switched, also improves the overhaul efficiency to equipment.
The utility model can solve the problem of calculator room equipment unified planning management, meanwhile, switching operation is by logic
Circuit is completed, and is greatly improved the efficiency that transmitter is switched, is alleviated the operating pressure of operator, ensure that emission system
Reliability also provides preferable scheme for antenna transmission system transformation in standardization station construction.
Detailed description of the invention
Fig. 1 is double vacuum contactor connection figures of the utility model.
Fig. 2 is the control circuit schematic diagram of the utility model switching action device.
Fig. 3 is the logic control circuitry diagram under the utility model broadcast state.
Specific embodiment
The structural principle of the utility model and working principle are described in further detail with reference to the accompanying drawings and examples.
Referring to Fig. 1, a kind of medium wave transmitter antenna feeder line automation changeover apparatus, includes switching action device and logic control
Device processed,
Switching action device includes that two mechanical structures and the identical double-pole double throw vacuum of electric property in parallel connect
Tentaculum；
The normal-closed end A1 of vacuum contactor A8, the normal-closed end B1 of vacuum contactor B9 are connected with primary transmitter 4；Vacuum
The normally open end A2 of contactor A, the common end A2 of vacuum contactor B are connected with standby transmitter 5；The common end of vacuum contactor A
A3 is connected with antenna feeder 6；The common end B3 of vacuum contactor B is connected with fictitious load 7.
The vacuum contactor use JPK-11/008 double-pole double throw low-vacuum load-tripping device, rated operational voltage 13KV,
Single contact rated current 35A.
The switching action device is set there are four radiofrequency signal port.The connection type of four prevention at radio-frequency port is (Fig. 1):
JKVacuum ACommon end connects antenna feeder；JKVacuum BHost common end connects fictitious load；JKVacuum ANormal-closed end and JKVacuum BNormally open end connection master
Machine high frequency output port；JKVacuum ANormally open end and JKVacuum BNormal-closed end connects standby host high frequency output port.
Realize that host, standby host are switched between the two in antenna feeder and fictitious load.In practical application, two groups of contacts use copper strips
Connection, parallel operation further increase the reliability of device.
It is the medium wave transmitter of 10kW grade for carrier power, when power amplifier is fully open, modulation m=(43-18)/
When 18=1.39, peak power Pmax=(1+m)2P=57121W.Voltage peak is U=4779V, current peak I=
33.8A.The above calculated result illustrates that equipment meets the launch requirements of 10KW transmitter feedback line in electric property.
Due to vacuum contactor connecting terminal category linear unit, no reactance characteristic, so prevention at radio-frequency port characteristic will not be changed
Impedance (50 Ω).Using moral power DS7631 vector network analyzer test medium wave band frequency (520-1610kHz) transmission characteristic and
Reflection characteristic chooses 5 test points.Instrument output power is 5dBm (1V), and measuring transmission loss, signal passes through vacuum contactor
Behind contact, the variation of amplitude and phase, reflection characteristic test, in the public 50 Ω fictitious load of termination of vacuum contactor, from normal-closed end
Test standing-wave ratio and impedance variations, data target meet requirement (table 1).
Referring to fig. 2, the switching action device includes standby host amplifier power supply A.C. contactor, the exchange of standby host amplifier power supply
Alternating current input switch power supply is driven relay line by the logic control switch power supply of DC leadout road by contactor
Packet movement.
Referring to Fig. 3, complete equipment works in the case where broadcasting and overhauling both of which (referring to table 2).Under presentation mode, by mutual
Lock circuit, synchronization can only start a transmitter, realize that broadcast primary transmitter is connected to antenna feeder, standby transmitter and
Fictitious load connection, but cannot start.Under maintenance model, two transmitters can be started simultaneously, realize that primary transmitter is broadcasted, examined
When repairing standby host, primary transmitter is connect with antenna feeder, while changeover apparatus is failure to actuate, and standby transmitter is connect with fictitious load.Instead
It, when standby host is broadcasted, overhauled the main engine, standby transmitter is connect with antenna feeder, and primary transmitter is connect with fictitious load.
Under 2 two kinds of operating modes of table, each equipment working state:
Control logic device (Fig. 3) is designed based on requirements above, " Double-linkage switchs (K by one1、K2) ", a DC24V
Line packet relay (JIt is self-locking) and two AC220V line packet relay (JIt is main、JIt is standby) composition.In view of the versatility of device, device is not accounted for
With transmitter internal work contact, logic switch is used only power amplifier in transmitter A.C. contactor and provides AC220V, for starting control
Relay J processedIt is main、JIt is standby。
Double-linkage switch is in open position under broadcast state, realizes two transmitter interlockings.It is primary transmitter, spare
Transmitter interlocking is provided by interlocking interface outside 10kW medium wave transmitter and 1kW medium wave transmitter+12V boot-strap circuit respectively.When
When primary transmitter is opened in preparation, standby transmitter is in off-mode, JIt is standbyLine packet must not be electric, makes JKIt is standby(normally closed point) cannot disconnect,
Host interlocking line is connected by this access, completes to start primary transmitter (host) movement.Later, due to JIt is mainLine Bao get electricity,
JKMain 1It disconnects, standby host chain line is all off, prevents it from starting, reaches interlocking purpose.Vice versa.
Double-linkage switch is in the close position under inspecting state, after any transmitter starting, passes through primary transmitting
The K of machine1, standby transmitter K2Achievable booting.
When standby transmitter (standby host) broadcasts, when overhauling the main engine, according to routine operation, standby transmitter (standby host) is first opened
It opens.Due to JKMain 2Closure, two low-vacuum load-tripping device line Bao get electricity, antenna feeder are switched to standby transmitter (standby host) side, standby host
It is normal to broadcast, while self-locking relay JIt is self-lockingLine Bao get electricity, JKIt is self-lockingClosure completes low-vacuum load-tripping device and keeps DC24V.Open host
Afterwards, although JKMain 2It disconnects, but does not influence standby host broadcast；Primary transmitter fictitious load side can free switch machine overhauled.
When primary transmitter (host) broadcast, overhaul reserve transmitter, primary transmitter (host) is first opened, JKMain 2It is disconnected
It opens, restarts standby host, JVacuum A、J Vacuum B、JIt is self-lockingRelay cannot be attracted, and antenna feeder is connect with host, and standby host is in fictitious load side work
Make.
Claims (4)
1. a kind of medium wave transmitter antenna feeder line automation changeover apparatus, which is characterized in that include switching action device and logic
Control device；
Switching action device includes two mechanical structures and the identical double-pole double throw vacuum contactor of electric property in parallel；
The normal-closed end A(1 of vacuum contactor A), the normal-closed end B(1 of vacuum contactor B) be connected with primary transmitter；Vacuum contact
The normally open end A(2 of device A), the common end A(2 of vacuum contactor B) be connected with standby transmitter；The common end A of vacuum contactor A
(3) it is connected with antenna feeder；The common end B (3) of vacuum contactor B is connected with fictitious load.
2. a kind of medium wave transmitter antenna feeder line automation changeover apparatus according to claim 1, which is characterized in that described
Vacuum contactor uses JPK-11/008 double-pole double throw low-vacuum load-tripping device, rated operational voltage 13KV, single contact rated current
35A。
3. a kind of medium wave transmitter antenna feeder line automation changeover apparatus according to claim 1, which is characterized in that described
Switching action device is set there are four radiofrequency signal port；Realize primary transmitter, standby transmitter in antenna feeder and fictitious load two
It is switched between person；In practical application, antenna feeder is connected with two groups of contacts of fictitious load using copper strips, parallel operation.
4. a kind of medium wave transmitter antenna feeder line automation changeover apparatus according to claim 1, which is characterized in that described
Switching action device includes standby host amplifier power supply A.C. contactor, and the amplifier power supply A.C. contactor of standby transmitter is by alternating current
Input switch power supply drives the movement of relay line packet by the logic control switch power supply of DC leadout road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276332.2U CN208923355U (en) | 2018-08-09 | 2018-08-09 | A kind of medium wave transmitter antenna feeder line automation changeover apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276332.2U CN208923355U (en) | 2018-08-09 | 2018-08-09 | A kind of medium wave transmitter antenna feeder line automation changeover apparatus |
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| Publication Number | Publication Date |
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| CN208923355U true CN208923355U (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821276332.2U Active CN208923355U (en) | 2018-08-09 | 2018-08-09 | A kind of medium wave transmitter antenna feeder line automation changeover apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113489498A (en) * | 2021-07-21 | 2021-10-08 | 天津七六四通信导航技术有限公司 | Automatic switching system of high-voltage antenna |
-
2018
- 2018-08-09 CN CN201821276332.2U patent/CN208923355U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113489498A (en) * | 2021-07-21 | 2021-10-08 | 天津七六四通信导航技术有限公司 | Automatic switching system of high-voltage antenna |
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