CN107985129A - Insulation joint - Google Patents
Insulation joint Download PDFInfo
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- CN107985129A CN107985129A CN201710979960.0A CN201710979960A CN107985129A CN 107985129 A CN107985129 A CN 107985129A CN 201710979960 A CN201710979960 A CN 201710979960A CN 107985129 A CN107985129 A CN 107985129A
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- Prior art keywords
- track
- frequency band
- band signals
- isolated location
- insulation joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of insulation joint, including：First track and the second track, are parallel to each other and are predetermined length, and the first end point of the first track is corresponding with the first end point of the second track, and the second endpoint of the first track is corresponding with the second endpoint of the second track；First isolated location, the first isolated location is connected with the first end point of the first track and the first end point of the second track respectively, and the first isolated location can isolate the first frequency band signals；Second isolated location, the second isolated location is connected with the second endpoint of the first track and the second endpoint of the second track respectively, and the second isolated location can isolate the second frequency band signals；Tuned cell, is connected with the intermediate point of the first track and the intermediate point of the second track respectively, and can realize the parallel resonance to the first frequency band signals and the second frequency band signals；And signal transmitting and receiving unit, it is connected with the tuned cell.
Description
Technical field
The present invention relates to a kind of insulation joint, more particularly to a kind of branch that can eliminate in non-insulated track circuit system is dead
The insulation joint in area.
Background technology
Insulation joint (also known as electrical insulation section) in non-insulated track circuit system is used for realization between adjacent track circuit
Electrical isolation, ensures effective transmission of local area segment signal, and realizes the balance to industrial frequency traction reflux, is non-insulated track circuit
Very crucial part in system.The non-insulated track circuit applied at present in the big iron wire road in China is ZPW (UM)
The tuner-type non-insulated track circuit of series, the defects of due in principle, which has long or short divide
Road dead band.Management to branch dead band takes substantial amounts of manpower and materials for a long time, while newly-built run in early stage is to no branch dead band
Or the demand in short shunt dead band is very strong.Therefore the branch dead band in electrical insulation section is overcome, to supporting national high ferro " to walk out
Go " etc. strategic objective there is great strategic significance.
The insulation joint of the prior art is illustrated with reference to Fig. 1 and Fig. 2.
As shown in fig. 1, the tuning area of the insulation joint of the prior art is by air core coil (SVA) and the tuned cell of both sides
Rail composition between F1, F2 and F1, F2.F1, F2 form frequency f using the series resonance of inductance and capacitance1、f2Under " zero
Impedance ", so as to form f1Signal, f2The transmission border of signal.
As shown in Figure 2, FS1 represents the transmission of first frequency band signals of this insulation joint, and JS1 represents the of adjacent insulation joint
The reception of one frequency band signals, FS2 represent the transmission of the second frequency band signals of another adjacent insulation joint, and JS2 represents this insulation joint
The reception of second frequency band signals.
The track relay (not shown) of section 1 is connected with two tracks in the insulation joint where JS1, and passes through this
Two tracks receive the first frequency band signals that FS1 is sent.The track relay (not shown) of section 2 and the insulation joint where JS2
In two tracks be connected, and pass through this two tracks and receive the second frequency band signals that FS2 is sent.Track relay it is main
Effect is for judging the service condition of section inner orbit (idle or occupancy).Two horizontal lines are arranged at the top of Fig. 2, below a horizontal stroke
Line represents the door restrictor that falls of track relay, and what a horizontal line above represented track relay picks up door restrictor.Section 1 divides
Road residual voltage represents the branch residual voltage change curve in the first section, and 2 branch residual voltage of section represents the branch residual voltage in the second section
Change curve.
As shown in Figure 2, when branch is between JS1 and FS1 (wheel of train is pointed between JS1 and FS1), by
In the short circuit effect of wheel pair, cause the suction of track relay insufficient, therefore the branch residual voltage of section 1 is very low, relay is reliable
Fall, non-insulated track circuit systems inspection to the branch (i.e. track between JS1 and FS1 is occupied) between JS1 and FS1.
When shunting point is moved from FS1 to JS2 directions, the branch residual voltage of section 1 gradually rises, and door is picked up what P1 points reached relay
Limit, 1 relay energized of section, and the branch residual voltage of section 2 is not yet reduced to relay and falls thresholding at this time, until P2 points, area
The relay of section 2 is fallen, and checks again for branch.It can be seen from the above that branch of the train between P1 and P2 can not make any one
Relay is fallen, thus the rail section that can not be checked between branch P1 and P2 is branch dead band.When the branch position of train
When in the branch dead band, the judgement of non-insulated track circuit system is that the first section and the second section are idle, this erroneous judgement
It will constitute a threat to the safe operation of train, while discharge such misjudgment and be also required to labor intensive.
The content of the invention
Substantially eliminated it is an object of the invention to provide a kind of caused by the limitation of the prior art and defect
The insulation joint of one or more problems.
According to an aspect of the present invention, there is provided a kind of insulation joint, including：First track and the second track, described first
Track is parallel to each other with second track and is predetermined length, the first end point of first track and second track
First end point it is corresponding, the second endpoint of first track is corresponding with the second endpoint of second track；First every
From unit, first isolated location connects with the first end point of first track and the first end point of second track respectively
Connect, and first isolated location can isolate the first frequency band signals；Second isolated location, the second isolated location difference
It is connected with the second endpoint of first track and the second endpoint of second track, and second isolated location can
Isolate the second frequency band signals；Tuned cell, the tuned cell intermediate point with first track and second rail respectively
The intermediate point connection in road, and the tuned cell can be realized to the in parallel humorous of the first frequency band signals and the second frequency band signals
Shake；And signal transmitting and receiving unit, the signal transmitting and receiving unit are connected with the tuned cell, and first frequency can be sent
Segment signal and receive second frequency band signals
It can be seen from the above that insulation joint avoids the insulation joint of the prior art between adjacent track circuit according to the present invention
Branch dead band, it is possible to increase the security of non-insulated track circuit system, and save the branch dead band of the discharge prior art
The manpower of required consuming.
It should be understood that both foregoing general description and following detailed description are exemplary, and it is intended to
In the further explanation for providing claimed technology.
Brief description of the drawings
The embodiment of the present invention is described in more detail in conjunction with the accompanying drawings, above-mentioned and other purpose of the invention,
Feature and advantage will be apparent.Attached drawing is used for providing further understanding the embodiment of the present invention, and forms explanation
A part for book, is used to explain the present invention together with the embodiment of the present invention, is not construed as limiting the invention.Except non-clearly referring to
Go out, otherwise attached drawing is not considered as drawn to scale.In the accompanying drawings, identical reference number typically represents same components or step.
In the accompanying drawings：
Fig. 1 is the structure chart for showing insulation joint of the prior art and its residing track circuit section；
Fig. 2 is the branch residual voltage and branch position relationship for the track circuit section for being shown with insulation joint of the prior art
Figure；
Fig. 3 is the structure chart for showing insulation joint according to the present invention and its residing track circuit section；
Fig. 4 is the series resonance principal for showing the first isolated location and the second isolated location in insulation joint according to the present invention
Circuit diagram；
Fig. 5 is the circuit diagram for the preferred embodiment for showing the first isolated location in insulation joint according to the present invention；
Fig. 6 is the song of the amplitude-frequency response for the preferred embodiment for showing the first isolated location in insulation joint according to the present invention
Line chart；
Fig. 7 is the circuit diagram for the preferred embodiment for showing the second isolated location in insulation joint according to the present invention；
Fig. 8 is the song of the amplitude-frequency response for the preferred embodiment for showing the second isolated location in insulation joint according to the present invention
Line chart；
Fig. 9 is the circuit diagram for the preferred embodiment for showing the tuned cell in insulation joint according to the present invention；
Figure 10 is that the preferred embodiment for showing the tuned cell in insulation joint according to the present invention is directed to the first frequency band signals
Equivalent circuit diagram；
Figure 11 is that the preferred embodiment for showing the tuned cell in insulation joint according to the present invention is directed to the second frequency band signals
Equivalent circuit diagram；
Figure 12 is the diagram for the preferred embodiment for showing the signal transmitting and receiving unit in insulation joint according to the present invention；And
Figure 13 is that the branch residual voltage for the track circuit adjacent sections for being shown with the insulation joint of the present invention and branch position are closed
System's figure.
Embodiment
In order to enable the object, technical solutions and advantages of the present invention become apparent, root is described in detail below with reference to accompanying drawings
According to example embodiments of the present invention.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than this hair
Bright whole embodiments, it should be appreciated that the limitation of the invention from example embodiment described herein.Based on reality described herein
Example is applied, those skilled in the art's obtained all other embodiment in the case where not making the creative labor should all be fallen into
Within protection scope of the present invention.In the present description and drawings, will use the same reference numerals to represent substantially the same
Element and function, and the duplicate explanation by omission to these elements and function.In addition, for clarity and brevity, it is convenient to omit
For the explanation of function known in the art and construction.
The overall arrangement of the insulation joint 1 of the present invention is illustrated with reference first to Fig. 3.Fig. 3 is to show according to the present invention
The structure chart of insulation joint 1 and its residing track circuit section.Insulation joint 1 can be applied to non-insulated track circuit system, use
Electrical isolation between adjacent track circuit is realized, ensures effective transmission of local area segment signal, and realizes and flow back to industrial frequency traction
Balance etc..The non-insulated track circuit system can be the train system of single type, such as subway system, inter-city passenger rail
System, high-speed railways, ordinary train system etc..The non-insulated track circuit system can also be mixed type train system, example
The system being combined such as high ferro train with ordinary train.Those skilled in the art can incite somebody to action on the basis of the principle of the invention is understood
The insulation joint of the present invention is applied to different non-insulated track circuit systems.In addition, in practice, insulation joint 1 of the invention can be with
For substituting traditional mechanical insulated joint, so as to fulfill the seamless connection (i.e. continuous welded rail track) of train rail, so as to avoid row
Car wheel is to the impact at rail joint.
As shown in Figure 3, insulation joint 1 includes：First track 10, the second track 20, the isolation of the first isolated location 30, second
Unit 40, tuned cell 50 and signal transmitting and receiving unit 60.Below in conjunction with Fig. 3 to Figure 12 to the various components in insulation joint 1
It is described in detail.
First track 10 and the second track 20 are parallel to each other and are predetermined length, the first end point A of the first track 10 with
The first end point A ' of second track 20 is corresponding, the second terminal B of the first track 10 and the second terminal B of the second track 20 ' phase
It is corresponding.
First track 10 and the second track 20 are two tracks being parallel to each other.As described above, insulation joint 1 can substitute
Traditional mechanical insulated joint, so the wheel of running train (such as subway train, high ferro train) is to can be from 10 He of the first track
Pass through on second track 20.It is therefore preferred that the first track 10 is parallel to each other with the second track 20.Those skilled in the art should
It is noted that in practice, due to the limitation of ground flat degree, track laying technique, track manufacturing process etc., the first track 10
It is not absolute parallel with 20 mutual parallel relation of the second track, but there may be certain error.In addition, when insulation joint 1 is used
When on warp rail, arc is presented in the first track 10 and the second track 20, but each of which is in a relatively very short segment length
In the range of the track of (such as one section of very short length of tangential direction arcuately) be still parallel to each other.In addition, it is shown in Fig. 3
The plan view from above of insulation joint 1, it does not show that whether the first track 10 is consistent in height with the second track 20.In practice,
The height of usual first track 10 and the second track 20 should be consistent with each other.But when insulation joint 1 is used on warp rail, usually
In order to offset the centrifugal force of train, the track outline in outside is higher than the track of inner side.
Preferably, the first track 10 and the second track 20 are rail.The rail can use potassium steel, carbon steel etc..
Therefore, the general designation of steel material used by herein referred " rail " is interpreted as to the first track 10 and the second track 20.Though
Right example above shows being realized by rail for the first track 10 and the second track 20, but the present invention does not limit the first rail
The material of 10 and second track 20 of road, those skilled in the art can be right according to the needs of insulation joint in practice and track circuit
The material of first track 10 and the second track 20 is in optimized selection, as long as can realize the principle of the present invention (particularly hereafter
Described rail inductance principle).
As shown in Figure 3, the length of the first track 10 and the second track 20 is l.The first track in first track 10
Unit 11, the 3rd track element 21 in the second track 20, the first isolated location 30, tuned cell 50 (being in capacitive reactances) need
Parallel resonance is produced so as to form high impedance to the secondary signal from right side (as shown in Figure 3), to ensure signal transmitting and receiving list
Member 60 receives the secondary signal of enough energy.Therefore, corresponding steel of both the first track element 11 and the 3rd track element 21
Rail equivalent impedance is rail inductance, so as to provide inductance for parallel resonance described above.It can be seen from the above that required rail inductance
Size is according to the composition and performance, the composition of tuned cell 50 and performance, the frequency of secondary signal of the first isolated location 30 etc.
It is different and different.In the case where steel rail material determines, required rail inductance is bigger, the first track element 11 and the 3rd track
Both units 21 should be longer；On the contrary, required rail inductance is smaller, both the first track element 11 and the 3rd track element 21 should
It is shorter.
Therefore, those skilled in the art can be according to the first isolated location 30 described below, tuned cell 50, second
Signal etc. sets the length of the first track element 11 and the 3rd track element 21, as long as can realize described above
The principle of parallel resonance.So the length of the first track element 11 and the 3rd track element 21 is not limited herein herein.
Similarly, the second track element 12 in the first track 10, the 4th track element 22, second in the second track 20 every
Need to produce parallel resonance from unit 40, tuned cell 50 (being in capacitive reactances) so as to believe (as shown in Figure 3) first frequency range
Number formed high impedance, to ensure that signal transmitting and receiving unit 60 can send out the first frequency band signals of enough energy.Therefore, the second rail
Both 12 and the 4th track element 22 of road unit corresponding rail impedances are equivalent to rail inductance, so as to be parallel connection described above
Resonance provides inductance.It can be seen from the above that composition and performance, tuning list of the required rail inductance size according to the second isolated location 40
Member 50 composition and performance, the frequency of the first frequency band signals etc. it is different and different.It is required in the case where steel rail material determines
Rail inductance it is bigger, the second track element 12 and the 4th track element 22 both should be longer；On the contrary, required rail inductance is got over
Small, both the second track element 12 and the 4th track element 22 should be shorter.
Therefore, those skilled in the art can be according to the second isolated location 40 described below, tuned cell 50, first
Frequency band signals etc. set the length of the second track element 12 and the 4th track element 22, as long as institute above can be realized
The principle for the parallel resonance stated.So the length of the second track element 12 and the 4th track element 22 is not limited herein herein
Degree.
Preferably, insulation joint 1 is length symmetrical structure.That is, the first track element 11 and the second track element 12
Length it is identical, and the 3rd track element 21 is identical with the length of the 4th track element 22.In general, in non-insulated track circuit
In system, the signal frequencies (i.e. the frequency of the first frequency band signals and the frequency of the second frequency band signals) of adjacent sections be it is known,
Therefore, those skilled in the art can be by selecting the first isolated location 30, the second isolated location 40 and tuned cell 50
Selecting property is set, and to ensure that the first track element 11 is identical with the length of the second track element 12, similarly ensures the 3rd track element
21 is identical with the length of the 4th track element 22.
It is noted that in practice, the signal frequency setting options of adjacent sections are led in non-insulated track circuit system
Often there are 1700Hz, 2000Hz, 2300Hz, 2600Hz.For example, as shown in Figure 3, the first frequency band signals used by the second section
Frequency be 1700Hz, the frequency of the second frequency band signals is 2300Hz used by the first section.Although example above is shown
The signal frequency of track circuit system for no reason at all, but the present invention is not limited thereto, those skilled in the art can be to signal frequency
Rate makes choice, for example, the frequency of the first frequency band signals can be 2300Hz used by the second section, the first section is used
The frequencies of the second frequency band signals can be 1700Hz, as long as the principle of the present invention can be realized.
It should be noted that the rail due to participating in resonance (particularly series resonance, be detailed below) in the insulation joint 1 of the present invention
Road is the track between tuned cell 50 and the isolated location (i.e. the first isolated location 30 or the second isolated location 40) of side
(track for participating in resonance only accounts for the half of 20 respective length of the first track 10 and the second track), and in the existing of Fig. 1 and Fig. 2
It is that the whole track for tuning area is involved in resonance, therefore track (i.e. the first rail of the insulation joint 1 of the present invention in the insulation joint of technology
10 and second track 20 of road) length will be greater than the prior art insulation joint middle orbit length.
The first end point A of first track 10 is corresponding with the first end point A ' of the second track 20.The second of first track 10
Second terminal B of terminal B and the second track 20 ' it is corresponding.As shown in Figure 3, the first end point A and the second rail of the first track 10
Line and the first track 10, the second track 20 between the first end point A ' in road 20 is at a right angle.Similarly, the second of the first track 10
Second terminal B of terminal B and the second track 20 ' between line and the first track 10, the second track 20 it is at a right angle.
Preferably, the first end point A ' of the first end point A of the first track 10 and the second track 20 can with first group outside
Parallel orbit connects respectively；And the second terminal B of the second terminal B of the first track 10 and the second track 20 ' can be with second
Group external parallel track connects respectively.
Specifically, insulation joint 1 of the invention can be used between the adjacent track circuit in non-insulated track circuit system,
That is, insulation joint 1 can be used between two neighboring track section and for connecting adjacent track circuit.Such as institute in Fig. 3
Show, corresponding first section in the right side of tuned cell 50, corresponding second section in the left side of tuned cell 50, the first section leads to the second section
Insulation joint 1 is crossed to be connected to each other.Therefore, two tracks (i.e. first group of external parallel track) of the first section are respectively in first end point
A and A ' is connected with the first track 10 and the second track 20, and two tracks (i.e. second group of external parallel rail of the second section
Road) it is connected respectively in the second terminal B and B ' with the first track 10 and the second track 20.In other words, can be considered as the first track
10 and second track 20 respectively along shown in Fig. 3 left and right sides direction extend so that with insulation joint 1 outside parallel orbit company
Connect；First track element 11 and the 3rd track element 21 can also be considered as to a part for two articles of parallel orbits of the first section,
Second track element 12 and the 4th track element 22 are considered as to a part for two articles of parallel orbits of the second section.
In addition, insulation joint 1 can be also used for the first section in non-insulated track circuit system.It is assumed that shown in Fig. 3
Second section is the first section in track circuit system for no reason at all, and therefore, the second frequency band signals shown in Fig. 3 are not present, letter
Number Transmit-Receive Unit 60 can send the first frequency band signals and be passed along the left side of the first track 10 and the second track 20 into Fig. 3
It is defeated.In practice, circuit element may be still set on the outside of first section (right side i.e. shown in Fig. 3), such as power supply unit,
Refluxing unit etc., therefore, the first isolated location 30 can isolate the first frequency band signals, so as to prevent the first frequency band signals to the right
Transmit and influence these circuit elements.
First isolated location 30 connects with the first end point A of the first track 10 and the first end point A ' of the second track 20 respectively
Connect, and the first isolated location 30 can isolate the first frequency band signals.
Specifically, the first isolated location 30 can include one or more components.One end of first isolated location 30
Be connected with the first end point A of the first track 10, and the other end is connected with the first end point A ' of the second track 20, thus first every
The first frequency band signals that can be sent from unit 30 by the first track 10 and the second track 20 reception signal transmitting and receiving unit 60, and
And first frequency band signals are isolated, that is, first frequency band signals are prevented to the right side of the insulation joint 1 shown in Fig. 3
Transmission, so that preventing the signal (i.e. the first frequency band signals) of the second section influences the first section.
First isolated location 30 can realize the isolation to the first frequency band signals by LC oscillating circuits.First isolated location
30 can also isolate the first frequency band signals by traffic filter.First isolated location 30 can also by radio signal shielding device Lai
Realize.Although example above shows the implementation of the first isolated location 30, but the present invention is not limited thereto, this area
Technical staff can set the first isolation list using the known in the art or following signal isolation developed or shield technology
Member 30, so as to fulfill the isolation to the first frequency band signals, as long as the first frequency band signals can be prevented along the first track 10 and second
Track 20 is transmitted to the right side of the insulation joint 1 shown in Fig. 3.
Preferably, the first isolated location 30 could be provided as trackside equipment.That is, can be by the first isolated location 30
It is arranged between the first track 10 and the second track 20, the first isolated location 30 can also be arranged on the first track 10 or the second
The side of track 20.In this case, there may be length difference for the respective connection wiring of the first isolated location 30 and two tracks
Different, so as to cause the first frequency band signals that the first isolated location 30 receives, there may be slight change, it is contemplated that connection wiring
Performance, this slight change can be ignored in practice.
Preferably, the first isolated location 30 can be arranged in the control centre or electric substation outside insulation joint 1.By first
Isolated location 30 is arranged on the maintenance for being conducive to non-insulated track circuit system in the control centre or electric substation outside insulation joint 1
Personnel make choice and adjust to the configuration parameter of the first isolated location 30 and/or its built-in component, so that when the first frequency range is believed
Number frequency and/or power when changing, ensure isolation effect of first isolated location 30 to the first frequency band signals.
Although example above show the first isolated location 30 and the first track 10, the second track 20 connection relation,
Position relationship and implementation, but the present invention is not limited thereto, those skilled in the art can be according to non-insulated track circuit
The actual needs of system, is adjusted the above-mentioned connection relation and position relationship of the first isolated location 30, as long as can realize
The principle of the present invention.
Preferably, the first isolated location 30 can produce series resonance with the first frequency band signals.
Specifically, the first isolated location 30 is formed by LC oscillating circuits.With reference to Fig. 4 to the principle of series resonance into
Row explanation.As shown in Figure 4, in the series circuit that resistance, inductance and capacitance are formed, vibrated according to the LC of alternating current circuit former
Reason, there are induction reactance, it increases inductance L with the increase of frequency；There are capacitive reactance, it reduces capacitor C with the rise of frequency.LC
Total reactance=induction reactance-capacitive reactance of oscillating circuit.After LC oscillating circuit various components determine, under a certain specific frequency, just
Good opinion resists equal to capacitive reactance, and the voltage in circuit is identical with the phase of electric current, circuit is presented purely, which is
The resonant frequency f of the LC oscillating circuits0.Usual resonant frequency f0Calculation formula be:
When the frequency and the resonant frequency f of the LC oscillating circuits of external communication signal0When identical, it is humorous to thereby produce series connection
Shake, electric current reaches maximum in circuit at this time, and total impedance is minimum in circuit, is pure resistance R.When the LC oscillating circuits eliminate
During resistance R, then under ideal conditions, impedance when which occurs above-mentioned series resonance is the resistance of connection wiring, also referred to as
" zero impedance ", that is, short-circuit between the first end point A of the first track 10 and the first end point A ' of the second track 20.Therefore
Electric current between first end point A and first end point A ' is up to maximum, so that the first frequency band signals are single in the first isolation
It is short-circuited at member 30, so right side transmission of first frequency band signals without the insulation joint 1 shown in normal direction Fig. 3.Thus the first isolation is single
Member 30 realizes the purpose of the first frequency band signals of isolation by series resonance.
In practice, the various components of the first isolated location 30 that can be using high quality factor element to realize so may be used
Make " zero impedance " as low as tens milliohms even more than ten milliohms, so that the first isolated location 30 has excellent isolation performance,
Form the transmission border of the first frequency band signals.
Preferably, the first isolated location 30 can be realized by induction-regulated series resonant circuit.In this case, first every
It can include the electronic components such as exciting transformer, voltage regulator, REgulatable reactor, divider from unit 30.Preferably, first
Isolated location 30 can be realized by series resonant device with variable frequency circuit.In this case, the first isolated location 30 can include becoming
The electronic components such as frequency power, exciting transformer, reactor, divider.
Although example above shows two kinds of implementations of the series resonant circuit of the first isolated location 30, but originally
Invention is not limited to above two circuit implementations, those skilled in the art can according to the present invention principle to series resonance
Making choice property of circuit is set, as long as the operation principle of the first isolated location 30 can be realized.
The preferred embodiment of the first isolated location 30 is described in detail referring to Fig. 5 and Fig. 6.Fig. 5 is to show root
According to the circuit diagram of the preferred embodiment of the first isolated location 30 in the insulation joint 1 of the present invention.Fig. 6 is to show according to the present invention
The amplitude-frequency response of the preferred embodiment of the first isolated location 30 in insulation joint 1.
As shown in Figure 5, the first isolated location 30 includes the 3rd capacitance C3, the 4th capacitance C4With tertiary coil L3, wherein,
3rd capacitance C3With tertiary coil L3Series connection, and the 3rd capacitance C after series connection3With tertiary coil L3Both and the 4th capacitance C4And
Connection.
Specifically, as shown in Figure 5, the 3rd capacitance C3The first end point A of the first connecting pin and the first track 10 connect
Connect；3rd capacitance C3Second connection end and tertiary coil L3The first connecting pin connection；Tertiary coil L3Second connection end with
First connection end point A ' connections of the second track 20；4th capacitance C4The first connecting pin and the first track 10 first end point A
Connection；4th capacitance C4Second connection end be connected with the first end point A ' of the second track 10.
Fig. 6 shows that the first isolated location 30 shown in Fig. 5 when input signal amplitude is fixed, exports the amplitude of signal
The rule for changing with frequency input signal and changing.The first isolated location 30 can be reflected by exporting the change of the amplitude of signal
The change of impedance.Therefore, when series resonance occurs for the first isolated location 30, amplitude is minimum, and impedance is minimum；When the first isolation is single
When parallel resonance occurs for member 30, amplitude is maximum, and impedance is maximum.
As shown in Figure 6, when the frequency for the input signal that the first isolated location 30 receives is 1700Hz, the first isolation
The amplitude of the output signal of unit 30 is minimum；When the frequency of input signal is 2300Hz, the output letter of the first isolated location 30
Number amplitude it is maximum (tending to infinitely great).It can be seen from the above that with reference to Fig. 3, when the first isolated location 30 receives from left side
During one frequency band signals (1700Hz), the impedance of the first isolated location 30 is minimum, and the first isolated location 30 and the first frequency range are believed at this time
Number series resonance occurs, then the first frequency band signals can not continue to transmit to the right, so that the first isolated location 30 realizes pair
The isolation of first frequency band signals.When the first isolated location 30 receives the second frequency band signals (2300Hz) from right side, the
The impedance of one isolated location 30 is maximum, at this time the first isolated location 30 and the second frequency band signals generation parallel resonance, and then first
Isolated location 30 provides high impedance for the second frequency band signals, so as to make signal transmitting and receiving unit 60 receive enough energy
Second frequency band signals.
Similarly, when the frequency for the input signal that the first isolated location 30 receives is 2000Hz, the first isolated location 30
Output signal amplitude it is minimum；When the frequency of input signal is 2600Hz, the width of the output signal of the first isolated location 30
Degree is maximum (tending to infinitely great).It can be seen from the above that when the frequency of the first frequency band signals shown in Fig. 3 is 2000Hz, first every
First frequency band signals can be isolated from unit 30, so as to prevent its continuation from transmitting to the right；When the second frequency range letter shown in Fig. 3
Number frequency when being 2600Hz, the first isolated location 30 provides high impedance for second frequency band signals, so as to make signal
Transmit-Receive Unit 60 receives the second frequency band signals of enough energy.
Although example above shows the preferred embodiment of the first isolated location 30, but the present invention is not limited thereto,
Those skilled in the art can be according to the known prior art or the new technology of following research and development come to the first isolated location 30
Resonance circuit is configured, as long as the principle of the present invention can be realized.
The second isolated location 40 in the insulation joint 1 of the present invention is carried out in detail with reference to Fig. 3 and with reference to Fig. 7 and Fig. 8
Explanation.Fig. 7 shows the circuit diagram of the preferred embodiment of the second isolated location 40.Fig. 8 shows the excellent of the second isolated location 40
Select the amplitude-frequency response of embodiment.
Second isolated location 40 respectively with the second terminal B of the first track 10 and the second terminal B of the second track 20 ' even
Connect, and the second isolated location 40 can isolate the second frequency band signals.
Specifically, the second isolated location 40 can include one or more components.One end of second isolated location 40
Be connected with the first end point B of the first track 10, and the other end is connected with the first end point B ' of the second track 20, thus second every
Second frequency band signals can be received by the first track 10 and the second track 20 from unit 40, and to second frequency band signals
Isolated, that is, prevent second frequency band signals from being transmitted to the left side of the insulation joint 1 shown in Fig. 3, so as to prevent first
The signal (i.e. the second frequency band signals) of section influences the second section.
Second isolated location 40 can realize the isolation to the second frequency band signals by LC oscillating circuits.Second isolated location
40 can also isolate the second frequency band signals by traffic filter.Second isolated location 40 can also by radio signal shielding device Lai
Realize.Although example above shows the implementation of the second isolated location 40, but the present invention is not limited thereto, this area
Technical staff can set the second isolation list using the known in the art or following signal isolation developed or shield technology
Member 40, so as to fulfill the isolation to the second frequency band signals, as long as the second frequency band signals can be prevented along the first track 10 and second
Track 20 is transmitted to the left side of the insulation joint 1 shown in Fig. 3.
Preferably, the second isolated location 40 could be provided as trackside equipment.That is, can be by the second isolated location 40
It is arranged between the first track 10 and the second track 20, the second isolated location 40 can also be arranged on the first track 10 or the second
The side of track 20.In this case, there may be length difference for the respective connection wiring of the second isolated location 40 and two tracks
Different, so as to cause the second frequency band signals that the second isolated location 40 receives, there may be slight change, it is contemplated that connection wiring
Performance, this slight change can be ignored in practice.
Preferably, the second isolated location 40 can be arranged in the control centre or electric substation outside insulation joint 1.By second
Isolated location 40 is arranged on the maintenance for being conducive to non-insulated track circuit system in the control centre or electric substation outside insulation joint 1
Personnel make choice and adjust to the configuration parameter of the second isolated location 40 and/or its built-in component, so that when the second frequency range is believed
Number frequency and/or power when changing, ensure isolation effect of second isolated location 40 to the second frequency band signals.
Although example above show the second isolated location 40 and the first track 10, the second track 20 connection relation,
Position relationship and implementation, but the present invention is not limited thereto, those skilled in the art can be according to non-insulated track circuit
The actual needs of system, is adjusted the above-mentioned connection relation and position relationship of the second isolated location 40, as long as can realize
The principle of the present invention.
Preferably, the second isolated location 40 can produce series resonance with the second frequency band signals.
Specifically, the second isolated location 40 is formed by LC oscillating circuits.The LC oscillating circuits of second isolated location 40 are former
Reason is similar to the oscillating circuit principle of above-described first isolated location 30, and details are not described herein again.
When the frequency and the resonant frequency f of the LC oscillating circuits of external communication signal0When identical, it is humorous to thereby produce series connection
Shake, electric current reaches maximum in circuit at this time, and total impedance is minimum in circuit, is pure resistance R.When the LC oscillating circuits eliminate
During resistance R, then under ideal conditions, impedance when which occurs above-mentioned series resonance is the resistance of connection wiring, also referred to as
It is short-circuit between " zero impedance ", that is, in the second terminal B of the first track 10 and the second terminal B of the second track 20 '.Therefore
Second terminal B and the second terminal B ' between electric current be up to maximum so that the second frequency band signals are single in the second isolation
It is short-circuited at member 40, so left side transmission of second frequency band signals without the insulation joint 1 shown in normal direction Fig. 3.Thus the second isolation is single
Member 40 realizes the purpose of the second frequency band signals of isolation by series resonance.
In practice, the various components of the second isolated location 40 that can be using high quality factor element to realize so may be used
Make " zero impedance " as low as tens milliohms even more than ten milliohms, so that the second isolated location 40 has excellent isolation performance,
Form the transmission border of the second frequency band signals.
Preferably, the second isolated location 40 can be realized by induction-regulated series resonant circuit.In this case, second every
It can include the electronic components such as exciting transformer, voltage regulator, REgulatable reactor, divider from unit 40.Preferably, second
Isolated location 40 can be realized by series resonant device with variable frequency circuit.In this case, the second isolated location 40 can include becoming
The electronic components such as frequency power, exciting transformer, reactor, divider.
Although example above shows two kinds of implementations of the series resonant circuit of the second isolated location 40, but originally
Invention is not limited to above two circuit implementations, those skilled in the art can according to the present invention principle to series resonance
Making choice property of circuit is set, as long as the operation principle of the second isolated location 40 can be realized.
Preferably, as shown in Figure 7, the second isolated location 40 includes the 5th capacitance C5, the 6th capacitance C6, the 5th coil L5
With the 6th coil L6, wherein, the 5th capacitance C5With the 5th coil L5Series connection, the 6th capacitance C6With the 6th coil L6Series connection, and go here and there
The 5th capacitance C after connection5With the 5th coil L5Both with connect after the 6th capacitance C6With the 6th coil L6Both are in parallel.
Specifically, as shown in Figure 7, the 5th capacitance C5The second terminal B of the first connecting pin and the first track 10 connect
Connect；5th capacitance C5Second connection end and the 5th coil L5The first connecting pin connection；5th coil L5Second connection end with
The second connection end point B ' connections of second track 20；6th capacitance C6The first connecting pin and the first track 10 the second terminal B
Connection；6th capacitance C6Second connection end and the 6th coil L6The first connecting pin connection；6th coil L6Second connection end
It is connected with the second connection end point B ' of the second track 20.
Fig. 8 shows that the second isolated location 40 shown in Fig. 7 when input signal amplitude is fixed, exports the amplitude of signal
The rule for changing with frequency input signal and changing.The second isolated location 40 can be reflected by exporting the change of the amplitude of signal
The change of impedance.Therefore, when series resonance occurs for the second isolated location 40, amplitude is minimum, and impedance is minimum；When the second isolation is single
When parallel resonance occurs for member 40, amplitude is maximum, and impedance is maximum.
As shown in Figure 8, when the frequency for the input signal that the second isolated location 40 receives is 2300Hz, the second isolation
The amplitude of the output signal of unit 40 is minimum；When the frequency of input signal is 1700Hz, the output letter of the second isolated location 40
Number amplitude it is maximum (tending to infinitely great).It can be seen from the above that with reference to Fig. 3, when the second isolated location 40 receives from right side
During two frequency band signals (2300Hz), the impedance of the second isolated location 40 is minimum, and the second isolated location 40 and the second frequency range are believed at this time
Number series resonance occurs, then the second frequency band signals can not continue to transmit to the left, so that the second isolated location 40 realizes pair
The isolation of second frequency band signals.When the second isolated location 40 receives the first frequency band signals (1700Hz) from left side, the
The impedances of two isolated locations 40 is maximum, at this time the second isolated location 40 and the first frequency band signals generation parallel resonance, and then second
Isolated location 30 provides high impedance for the first frequency band signals, so as to make signal transmitting and receiving unit 60 receive enough energy
First frequency band signals.
Similarly, when the frequency for the input signal that the second isolated location 40 receives is 2600Hz, the second isolated location 40
Output signal amplitude it is minimum；When the frequency of input signal is 2000Hz, the width of the output signal of the second isolated location 40
Degree is maximum (tending to infinitely great).It can be seen from the above that when the frequency of the second frequency band signals shown in Fig. 3 is 2600Hz, second every
Second frequency band signals can be isolated from unit 40, so as to prevent its continuation from transmitting to the left；When the first frequency range letter shown in Fig. 3
Number frequency when being 2000Hz, the second isolated location 30 provides high impedance for first frequency band signals, so as to make signal
Transmit-Receive Unit 60 receives the first frequency band signals of enough energy.
Although example above shows the preferred embodiment of the second isolated location 40, but the present invention is not limited thereto,
Those skilled in the art can be according to the known prior art or the new technology of following research and development come to the second isolated location 40
Resonance circuit is configured, as long as the principle of the present invention can be realized.
The tuned cell 50 in insulation joint 1 is illustrated with reference to Fig. 3.
Tuned cell 50 is connected with the intermediate point C of the first track 10 and the intermediate point C ' of the second track 20 respectively, and is adjusted
Humorous unit 50 can realize (including itself realizing, also include and other elements cooperate and realize) to the first frequency band signals and the
The parallel resonance of two frequency band signals.
Specifically, tuned cell 50 can include one or more components.One end of tuned cell 50 and the first rail
The intermediate point C connections in road 10, and the other end is connected with the intermediate point C ' of the second track 20, so that tuned cell 50 can pass through
First track 10 and the second track 20 receive the first frequency band signals and the second frequency band signals, and realize (both include passing through from
Body is realized, is also included by cooperating to realize with other elements) to the in parallel of the first frequency band signals and the second frequency band signals
Resonance, so as to ensure that signal transmitting and receiving unit 60 sends the first frequency band signals of enough energy, and ensures signal transmitting and receiving unit 60
Receive the second frequency band signals of enough energy.
Tuned cell 50 can realize parallel resonance alleged above by the following two kinds mode：The first is that tuning is single
Member 50 with the predetermined element in insulation joint 1 by cooperating to realize to the in parallel of the first frequency band signals and the second frequency band signals
Resonance；It is for second that tuned cell 50 itself realizes parallel resonance to the first frequency band signals or the second frequency band signals, that is, tunes
Unit 50 can produce parallel resonance with the first frequency band signals or the second frequency band signals.Those skilled in the art should be noted that under combination
The explanation of text understands herein referred " realize to the first frequency band signals and ... parallel resonance " and " can believe with the first frequency range
Number or ... produce parallel resonance " both difference, in general, the former can both refer to the cooperation of tuned cell 50 and other elements to produce
Parallel resonance, can also refer to tuned cell 50 oneself and independently produce parallel resonance；The latter only refers to tuned cell 50 oneself and independently produces
Raw parallel resonance.
The first implementation described above is described in detail below.
Tuned cell 50 can be by cooperating to realize to the first frequency range with first group of predetermined element in insulation joint 1
The parallel resonance of signal, and tuned cell 50 can be by cooperating to reality with second group of predetermined element in insulation joint 1
Now to the parallel resonance of the second frequency band signals.
As shown in Figure 3, it is the second track element 12 between the second terminal B of the first track 10 and intermediate point C, the second rail
Second terminal B in road 20 ' between intermediate point C ' it is the 4th track element 22, wherein, first group of predetermined element includes the
Two track elements 12, the 4th track element 22 and the second isolated location 40.
Specifically, tuned cell 50 is between the intermediate point C of the first track 10 and the intermediate point C ' of the second track 20
Capacitive reactances (equivalent to capacitance)；There are rail impedance, the rail impedance for second track element 12 and the 4th track element 22
It is equivalent to rail inductance；There is also inductance for second isolated location 40.Therefore, for the first frequency band signals in Fig. 3, second
The inductance of track element 12, the inductance of the second isolated location 40, the inductance three of the 4th track element 22 first connect, and then connect
Three inductance afterwards are in parallel with capacitance (i.e. tuned cell 50) again.It can be seen from the above that tuned cell 50, the second track element 12,
Four track elements 22 and the second isolated location 40 have collectively constituted the LC oscillating circuits of a parallel resonance, and LC vibration electricity
The parallel resonance frequency on road is identical with the frequency of the first frequency band signals.Therefore, when tuned cell 50 is received from signal transmitting and receiving list
During the first frequency band signals that member 60 is sent, which occurs parallel resonance to the first frequency band signals so that the LC vibrates
Circuit resistance for the first frequency band signals is maximum, i.e., the LC oscillating circuits form high impedance to the first frequency band signals, so that
It ensure that signal transmitting and receiving unit 60 can send out the first frequency band signals of enough energy.
As shown in Figure 3, it is the first track element 11 between the first end point A and intermediate point C of the first track 10, the second rail
It is the 3rd track element 21 between the first end point A ' and intermediate point C ' in road 20, wherein, second group of predetermined element includes the
One track element 11, the 3rd track element 21 and the first isolated location 30.
Specifically, tuned cell 50 is between the intermediate point C of the first track 10 and the intermediate point C ' of the second track 20
Capacitive reactances (equivalent to capacitance)；There are rail impedance, the rail impedance for first track element 11 and the 3rd track element 21
It is equivalent to rail inductance；There is also inductance for first isolated location 30.Therefore, for the second frequency band signals from right side in Fig. 3
For, the inductance of the first track element 11, the inductance of the 3rd track element 21, the capacitance three of tuned cell 50 first connect, so
Inductance in parallel with the first isolated location 30 again afterwards.It can be seen from the above that tuned cell 50, the first track element 11, the 3rd track list
21 and first isolated location 30 of member has collectively constituted the LC oscillating circuits of a parallel resonance, and the parallel connection of the LC oscillating circuits
Resonant frequency is identical with the frequency of the second frequency band signals.Therefore, when tuned cell 50 receives the second frequency band signals, which shakes
Swinging circuit and parallel resonance is occurred to the second frequency band signals so that LC oscillating circuits resistance for the second frequency band signals is maximum,
I.e. the LC oscillating circuits form high impedance to the second frequency band signals, so as to ensure that signal transmitting and receiving unit 60 can receive foot
Second frequency band signals of enough energy.
Second of implementation described above is described in detail below.
Tuned cell 50 can produce parallel resonance with the first frequency band signals or the second frequency band signals.
Specifically, tuned cell 50 can be realized by inductance and capacitance in parallel.In this case, tuned cell 50
Form the LC oscillating circuits of a parallel resonance.In the case of known to internal constituent elements in tuned cell 50, according to upper
Resonant frequency equation (series resonance frequency calculation formula is identical with parallel resonance frequency calculation formula) described in text would know that this
The parallel resonance frequency of LC oscillating circuits.Can be by being configured to the internal constituent elements of tuned cell 50, to make this
The parallel resonance frequency of LC oscillating circuits is identical with the frequency of the first frequency band signals or the frequency of the second frequency band signals.In this way, adjust
Humorous unit 50 can produce parallel resonance with the first frequency band signals or the second frequency band signals.Due to the inside group of tuned cell 50
It cannot usually change after the setup into element, so tuned cell 50 can only be with the first frequency band signals and the second frequency band signals two
One of person carries out parallel resonance, and is realized by " the first implementation " described above to the in parallel humorous of another signal
Shake.
The preferred embodiment of tuned cell 50 is illustrated with reference to Fig. 3 and with reference to Fig. 9 to Figure 11.Fig. 9 is to show
The circuit diagram of the preferred embodiment of tuned cell 50.Figure 10 is that the preferred embodiment for showing tuned cell 50 is believed for the first frequency range
Number equivalent circuit diagram.Figure 11 is that the preferred embodiment for showing tuned cell 50 is directed to the equivalent circuit diagram of the second frequency band signals.
Preferably, tuned cell 50 can be realized by LC oscillating circuits.Although exemplified here show tuned cell
50 implementation, but the present invention is not limited thereto, those skilled in the art can use known in the art or following grind
The technology sent sets the implementation of tuned cell 50, as long as can realize to the first frequency band signals and the second frequency band signals
Parallel resonance.
Preferably, tuned cell 50 could be provided as trackside equipment.That is, tuned cell 50 can be arranged on to
Between one track 10 and the second track 20, tuned cell 50 can also be arranged on to the side of the first track 10 or the second track 20
Side.In this case, the respective connection wiring of tuned cell 50 and two tracks is there may be difference in length, so as to cause to tune
There may be slight change for the AC signal (i.e. the first frequency band signals, the second frequency band signals) that unit 50 receives, it is contemplated that even
The performance of distribution is connect, this slight change can be ignored in practice.
Preferably, tuned cell 50 can be arranged in the control centre or electric substation outside insulation joint 1.By tuned cell
50 are arranged on and are conducive to the maintenance personnel of non-insulated track circuit system in control centre or electric substation outside insulation joint 1 and exchange
The configuration parameter of humorous unit 50 and/or its built-in component make choice and adjust, so that (i.e. the first frequency range is believed when AC signal
Number, the second frequency band signals) frequency and/or power when changing, ensure to realize parallel resonance to the AC signal.
Although example above shows 50 and first track 10 of tuned cell, the connection relation of the second track 20, position
Relation and implementation, but the present invention is not limited thereto, those skilled in the art can be according to non-insulated track circuit system
Actual needs, the above-mentioned connection relation of tuned cell 50 and position relationship etc. are adjusted, as long as the present invention can be realized
Principle.
As shown in Figure 9, tuned cell 50 includes the first capacitance C1, the second capacitance C2With first coil L1, wherein, first
Capacitance C1With first coil L1Series connection, and the first capacitance C after series connection1With first coil L1Both and the second capacitance C2It is in parallel.
Specifically, as shown in Figure 9, the first capacitance C1The first connecting pin be connected with the intermediate point C of the first track 10；
First capacitance C1Second connection end and first coil L1The first connecting pin connection；First coil L1Second connection end and the
Intermediate point C ' the connections of two tracks 20；Second capacitance C2The first connecting pin be connected with the intermediate point C of the first track 10；Second electricity
Hold C2Second connection end be connected with the intermediate point C ' of the second track 10.
The circuit shown in Fig. 9 can be considered as the LC oscillating circuits of parallel resonance as can be seen here.By to the first capacitance C1、
Second capacitance C2With first coil L1Type and numerical value be configured and can obtain different resonant frequencies.Therefore, by setting
Put, both as " the first implementation " above the tuned cell 50 can be allowed to be total to other predetermined elements in insulation joint 1
, can also be as above " second with the parallel resonance to the first frequency band signals and the parallel resonance to the second frequency band signals is realized
Kind implementation " like that, allows the tuned cell 50 oneself to realize the parallel resonance with the first frequency band signals or the second frequency band signals.
As shown in Figure 10, the parallel resonance frequency of tuned cell TX and the first frequency band signals f1Frequency it is identical (such as
1700Hz), therefore tuned cell TX and the first frequency band signals f1Produce parallel resonance.In this case, tuned cell TX is directed to
First frequency band signals f1High impedance is presented, thus, it is possible to ensure that the signal transmitting and receiving unit can send the first frequency of enough energy
Segment signal f1.First isolated location and the first frequency band signals occur above with reference to the series resonance described in Fig. 5, therefore the first isolation
Unit is directed to the first frequency band signals f1Formed " zero impedance ", that is, short-circuit between two tracks.Therefore, the first frequency range is believed
Number f1It can not to the right transmit, be achieved in the first frequency band signals f of isolation1Purpose.
Although it should be noted that in the overall arrangement of insulation joint 1 illustrated in fig. 3 and tuning illustrated in fig. 10 is single
The transmission direction of the first frequency band signals is arranged to transmit from right to left (that is, shown in Fig. 3 in the preferred embodiment of member
C points are transmitted to B points), but the present invention is not limited thereto, since the insulation joint 1 of the present invention is both the hair of the signal of the first section
Unit, and the receiving unit of the second segment signals are sent, accordingly it is also possible to which the first frequency band signals are arranged to pass from left to right
It is defeated.Those skilled in the art can carry out the transmission direction of the first frequency band signals on the basis of principles described above is understood
Selectivity is set, while correspondingly the position of the first isolated location and the second isolated location is configured.
As shown in Figure 11, the parallel resonance frequency of tuned cell TX and the second frequency band signals f2Frequency it is identical (such as
2300Hz), therefore tuned cell TX and the second frequency band signals f2Produce parallel resonance.In this case, tuned cell TX is directed to
Second frequency band signals f2High impedance is presented, thus, it is possible to ensure that the signal transmitting and receiving unit can receive the second of enough energy
Frequency band signals f2.Second isolated location and the second frequency band signals occur above with reference to the series resonance described in Fig. 5, thus second every
The second frequency band signals f is directed to from unit2Formed " zero impedance ", that is, short-circuit between two tracks.Therefore, the second frequency range
Signal f2It can not to the left transmit, be achieved in the second frequency band signals f of isolation2Purpose.
Although it should be noted that in the overall arrangement of insulation joint 1 illustrated in fig. 3 and tuning illustrated in fig. 11 is single
The transmission direction of the second frequency band signals is arranged to transmit from right to left (that is, shown in Fig. 3 in the preferred embodiment of member
A points are transmitted to B points), but the present invention is not limited thereto, since the insulation joint 1 of the present invention is both the hair of the signal of the first section
Unit, and the receiving unit of the second segment signals are sent, accordingly it is also possible to which the second frequency band signals are arranged to pass from left to right
It is defeated.Those skilled in the art can carry out the transmission direction of the second frequency band signals on the basis of principles described above is understood
Selectivity is set, while correspondingly the position of the first isolated location and the second isolated location is configured.
Signal transmitting and receiving unit 60 is illustrated with reference to Fig. 3 and with reference to Figure 12.
As shown in Figure 12, signal transmitting and receiving unit 60 is connected with tuned cell 50, and can send the first frequency band signals
And receive the second frequency band signals.
Specifically, the first connecting pin of signal transmitting and receiving unit 60 is connected with the first connecting pin of tuned cell 50；Signal
The second connection end of Transmit-Receive Unit 60 is connected with the second connection end of tuned cell 50.Due to 50 and first track list of tuned cell
The intermediate point C connections of member 10, and tuned cell 50 is connected with the intermediate point C ' of the second track element 20, therefore will can also believe
The connection relation of number Transmit-Receive Unit 60 is interpreted as：First connecting pin of signal transmitting and receiving unit 60 and the centre of the first track element 10
Point C connections；The second connection end of signal transmitting and receiving unit 60 is connected with the intermediate point C ' of the second track element 20.
As shown in Figure 12, it is preferable that signal transmitting and receiving unit 60 includes choke transformer, wherein, the choke transformer
Primary side be connected with the both ends of tuned cell 50, and the centre-point earth of primary side, the secondary side of the choke transformer
It is connected with external signal line.
Specifically, the first connecting pin of the primary side of the choke transformer can be connected with the first of tuned cell 50
End connection, i.e., the intermediate point C with the first track 10 is connected；The second connection end of the primary side of the choke transformer can be with tune
The second connection end connection of humorous unit 50, i.e., the intermediate point C ' with the second track 20 is connected.The external signal line can with it is exhausted
Control centre or electric substation's connection outside edge section 1, so as to fulfill the control of control centre or electric substation to signal transmitting and receiving unit.
In addition, the choke transformer can also be used for balancing rail traction current, it is desirable to its under certain uneven traction current not
Saturation.
Although example above shows the connection mode and its constituent element of signal transmitting and receiving unit 60, but the present invention is simultaneously
Not limited to this, those skilled in the art can be according to techniques known in the art and the technology of following research and development to signal transmitting and receiving list
First 60 making choice property are set, as long as the principle of the present invention can be realized.
The technique effect of the insulation joint 1 using the present invention is illustrated with reference to Figure 13.Figure 13 is to be shown with this
The branch residual voltage of the track circuit adjacent sections of the insulation joint 1 of invention and branch location diagram.
As shown in Figure 13, FS1/JS2 represents the signal transmitting and receiving unit of this insulation joint, and wherein FS1 represents the first frequency range letter
Number transmission, JS2 represents the reception of the second frequency band signals.JS1 represents the reception of the first frequency band signals of adjacent insulation joint, FS2
Represent the transmission of the second frequency band signals of another adjacent insulation joint.The frequency for the first frequency band signals that FS1 is sent is f1, FS2 hairs
The frequency of the second frequency band signals sent is f2.The left part of this insulation joint is located at the first section, the right part of this insulation joint
Positioned at the second section.
Track relay (not shown) is connected with two tracks in the insulation joint where JS1, and passes through this two rails
Road receives the first frequency band signals that FS1 is sent.The main function of track relay is the use feelings for judging section inner orbit
Condition (idle or occupancy).Two horizontal lines are arranged at the top of Figure 13, below a horizontal line represent track relay fall door restrictor, on
What one horizontal line in face represented track relay picks up door restrictor.1 branch residual voltage of section represents the branch residual voltage in the first section
Change curve, 2 branch residual voltage of section represent the branch residual voltage change curve in the second section.
As shown in Figure 13, when branch is located in section 1 (wheel of train is pointed in section 1), the branch of section 1
Residual voltage is being fallen under threshold value always, and in this case, the wheel of train is not to by the AC signal short circuit on two tracks, having
Electric current (or very faint electric current) causes track relay suction to weaken by the track relay, thus the track after
Electric appliance is fallen, non-insulated track circuit systems inspection to branch (i.e. the track of section 1 is occupied).As branch moves right,
Until having gone out section 1 has arrived P2 points, the branch residual voltage of section 1 is higher than door restrictor is picked up, and the track relay picks up, naked
Track circuit system does not check branch (i.e. the track clear of section 1)；And the branch residual voltage of section 2 enter section 2 it
Preceding P1 points are already below falling threshold value, so when rail section of the shunting point between P1 and P2, the track of section 1
The track relay of relay and section 2 is fallen, and two sections check branch.It can be seen from the above that where FS1/JS2
Do not occur Fig. 1 and Fig. 2 described " branch dead band " at insulation joint.Therefore, insulation joint of the invention avoids the prior art
Branch dead band of the insulation joint between adjacent track circuit.
It should be noted that purpose of the term as used in this specification merely for description particular implementation, rather than
It is intended to limit the invention.Unless the context clearly indicates otherwise, otherwise singulative as used herein
" one ", "one" and "the" are also intended to including plural form.Term " comprising ", "comprising" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence " including ... ", it is not excluded that including
Also there are other identical element in the process of the key element, method, article or equipment.
Those skilled in the art should understand that be：The above embodiments are only used to illustrate the technical solution of the present invention., and
It is non-that it is limited；Although the present invention is described in detail with reference to foregoing embodiments, those skilled in the art can
To modify to the technical solution described in foregoing embodiments, either which part or all technical characteristic are carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of claims of the present invention.
Claims (12)
1. a kind of insulation joint, including：
First track and the second track, first track is parallel to each other with second track and is predetermined length, described
The first end point of first track is corresponding with the first end point of second track, the second endpoint of first track with it is described
Second endpoint of the second track is corresponding；
First isolated location, first isolated location respectively with the first end point of first track and second track
First end point connects, and first isolated location can isolate the first frequency band signals；
Second isolated location, second isolated location respectively with the second endpoint of first track and second track
Second endpoint connects, and second isolated location can isolate the second frequency band signals；
Tuned cell, the tuned cell connect with the intermediate point of first track and the intermediate point of second track respectively
Connect, and the tuned cell can realize the parallel resonance to the first frequency band signals and the second frequency band signals；And
Signal transmitting and receiving unit, the signal transmitting and receiving unit are connected with the tuned cell, and can send first frequency range
Signal and second frequency band signals are received, alternatively, second frequency band signals can be sent and receive first frequency
Segment signal.
2. insulation joint according to claim 1, wherein,
First isolated location can produce series resonance, and the second isolated location energy with first frequency band signals
It is enough to produce series resonance with second frequency band signals.
3. insulation joint according to claim 2, wherein,
First isolated location includes the 3rd capacitance, the 4th capacitance and tertiary coil, wherein, the 3rd capacitance and the 3rd line
Circle series connection, and the 3rd capacitance after connecting and both tertiary coils are in parallel with the 4th capacitance.
4. insulation joint according to claim 2, wherein,
Second isolated location includes the 5th capacitance, the 6th capacitance, the 5th coil and the 6th coil, wherein, the 5th capacitance with
The 5th coil series connection, the 6th capacitance is connected with the 6th coil, and the 5th capacitance after series connection and institute
Both the 6th capacitance and the 6th coil after stating both the 5th coils and connecting are in parallel.
5. insulation joint according to claim 1, wherein,
The tuned cell can be by cooperating to realize to described the with first group of predetermined element in the insulation joint
The parallel resonance of one frequency band signals；And
The tuned cell can be by cooperating to realize to described the with second group of predetermined element in the insulation joint
The parallel resonance of two frequency band signals.
6. insulation joint according to claim 5, wherein,
The second track element between the second endpoint and intermediate point of first track, the second endpoint of second track with
It is the 4th track element between intermediate point, wherein,
It is single that first group of predetermined element includes second track element, the 4th track element and second isolation
Member.
7. insulation joint according to claim 5, wherein,
The first track element between the first end point and intermediate point of first track, the first end point of second track with
It is the 3rd track element between intermediate point, wherein,
It is single that second group of predetermined element includes first track element, the 3rd track element and first isolation
Member.
8. insulation joint according to claim 1, wherein,
The tuned cell can produce parallel resonance with first frequency band signals or second frequency band signals.
9. insulation joint according to claim 1, wherein,
The tuned cell includes the first capacitance, the second capacitance and first coil, wherein, first capacitance and the First Line
Circle series connection, and first capacitance after connecting and both first coils are in parallel with second capacitance.
10. insulation joint according to claim 1, wherein,
The signal transmitting and receiving unit includes choke transformer, wherein, the primary side of the choke transformer and the tuned cell
Both ends connection, and the centre-point earth of primary side, the secondary side of the choke transformer are connected with external signal line.
11. insulation joint according to claim 1, wherein,
The first end point of first track and the first end point of second track can be with first group of external parallel tracks point
Do not connect；And
Second endpoint of the second endpoint of first track and second track can be with second group of external parallel track point
Do not connect.
12. insulation joint according to claim 1, wherein,
First track and second track are rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109217300A (en) * | 2018-10-10 | 2019-01-15 | 中农盛辉（北京）科技有限公司 | Three-phase alternating current energy-saving equipment and energy-saving house |
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| CN107985129B (en) | 2020-01-10 |
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