CN103456561B - High-precision sulfur hexafluoride gas density relay - Google Patents
High-precision sulfur hexafluoride gas density relay Download PDFInfo
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- CN103456561B CN103456561B CN201310426104.4A CN201310426104A CN103456561B CN 103456561 B CN103456561 B CN 103456561B CN 201310426104 A CN201310426104 A CN 201310426104A CN 103456561 B CN103456561 B CN 103456561B
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- hexafluoride gas
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Abstract
The invention discloses a high-precision sulfur hexafluoride gas density relay which is good in shock resistance, high in precision, good in electrical performance, and long in service life. The high-precision sulfur hexafluoride gas density relay comprises a signal control part and an indicating value displaying part which are arranged in a shell body, wherein the signal control part and the indicating value displaying part are relatively independent, the indicating value displaying part comprises a display bourdon tube, a display end base, a machine core and a pointer, one end of the display bourdon tube is welded on a base, the other end of the display bourdon tube is welded on the display end base, and the shell body is an airtight air chamber and is filled with sulfur hexafluoride gas used for temperature compensation; the signal control part comprises a control bourdon tube, the base, a control end base, a plurality of signal generators and a signal adjusting mechanism, one end of the control bourdon tube is fixed on the base, the other end of the control bourdon tube is fixed on the control end base, the signal adjusting mechanism is arranged on the control end base, and the signal generators are installed on the base and are triggered to move by the signal adjusting mechanism.
Description
Technical field
The present invention relates to a kind of high accuracy sulfur hexafluoride gas density relay.
Background technology
At present, open for fine motion for monitoring the commonly used contact of the sulfur hexafluoride gas density in sulfur hexafluoride electrical equipment
The no oil type gas density relay (see figure 1) closed, though the microswitch that this sulfur hexafluoride gas density relay is adopted
So there is good electric property, but because microswitch all carries motion arm 1011,1021,1031, and its displacement has
Limit, so low precision.More prominent is because the length of the contact motion arm 12 in its structure is longer, and is a cantilever
Beam, when operating sulphur hexafloride circuit breaker, causes contact motion arm 12 to vibrate very big, and then causes sulfur hexafluoride gas density relay
Misoperation in device, or even occurs damaging microswitch, loses performance completely, its resistance to shock is poor in a word, precision property
Difference, range indication range little it is difficult to ensure system reliably working.
The applicant also sees Fig. 2 in Chinese patent or patent application 200510110648.5(), 200720066586.7,
200910195174.7(seeing Fig. 3), 200920209217.8,201010171798.8,201020190271.5,
201210032293.2,201220047225.9 be disclosed some sulfur hexafluoride gas density relays, wherein, patent
200510110648.5 with gas density relay disclosed in 200910195174.7 has several inclusion display portions and control unit
Point, and display portion and control section carry out temperature-compensating with temperature-compensating plate respectively it is difficult to realizing high accuracy action and showing
Show.Meanwhile, more prominent is because the length of the contact motion arm in its structure is longer, and is a cantilever beam, in operation
During sulphur hexafloride circuit breaker, cause the vibration of contact motion arm very big, and then cause sulfur hexafluoride gas density relay that malfunction occurs
Make, or even occur damaging microswitch, lose performance completely, resistance to shock is poor in a word, precision property difference is it is difficult to ensure system
System reliably working.
See Fig. 4 in patent 201020190271.5 and 201010171798.8() disclosed in gas density relay also include
Displacement amplifying mechanism, the initiating terminal of this displacement amplifying mechanism is connected with the other end of temperature compensating element, and it is micro- to amplify end driving
The contact operation handle of dynamic switch, makes the contact on microswitch or disconnection；When gas density value changes, Bourdon tube
Produce displacement with temperature compensating element, this is displaced through after displacement amplifying mechanism amplifies and passes to microswitch, makes microswitch
Send corresponding signal, complete the function of density monitor.However, when sulphur hexafloride circuit breaker carries out breaking-closing operating, can be to bar
Step on pipe and temperature compensating element produces vibration, this vibration can cause Baden pipe and temperature compensating element to be subjected to displacement, this position
Move and pass to microswitch after amplifying also by displacement amplifying mechanism, make microswitch send corresponding signal.Thus can produce
Raw misoperation that is to say, that its resistance to shock bad it is impossible to ensure system reliably working, bring greatly to the safe operation of electrical network
Hidden danger.These sulfur hexafluoride gas density relays can not meet the reclosing of sulphur hexafloride circuit breaker and require simultaneously.Inflate
It is impossible to bear the impact test of 50g, 11ms when pressure (density) is below alarm pressure value, now locking contact can occur by mistake
Action.For example: the density monitor of 0.6/0.52/0.5, when gas pressure (density) drops to actuation of an alarm point, now enters
The impact test of row 50g, 11ms, locking contact can occur misoperation, carried out locking to switch and opened it is impossible to meet sulfur hexafluoride
The reclosing closing requires.And the problem of patent 200520115321.2 is similar to patent 201010171798.8, it is also can be shaking
Dynamic cause be displaced through after displacement amplifying mechanism amplifies and pass to microswitch and (pass through control sector gear and pass to control
Machine mandrel, then through controlling machine mandrel to pass to microswitch), so greatly amplified the displacement that vibration causes, be equivalent to and make
Vibration becomes more severe.Due to vibrating in sulphur hexafloride circuit breaker breaking-closing operating very greatly it is accordingly required in particular to resistance to shock is more preferable
Gas density relay, these gas density relays above-mentioned then can not deal with.
Above-mentioned gas density monitor is all to carry out temperature-compensating using temperature-compensating plate it is difficult to realize high accuracy, simultaneously
Housing is not hermetic, is relative pressure type density monitor, can be affected by height above sea level.
See Fig. 5 in patent cn200720066586.7() it is openly a kind of gas density switch of utilization gas compensation, this
Kind gas density switch performance is more accurate, and precision is higher, and manufacturing cost is lower.But this gas density switch does not have density to show
The display portion of value, is difficult to promote in actual applications.Because there is no the display of density indicating value, early stage on the one hand can not be found
Gas leak phenomenon, if sulfur hexafluoride electric switch occurs gas leakage, only when its gas drops to alarming value, just sends alarm signal
Number, and now sulfur hexafluoride gas have leaked a lot, on the other hand because the greenhouse effects of sulfur hexafluoride gas are dioxies
Change carbon gas more than 20,000 times, if processing the fault of sulfur hexafluoride electrical equipment gas leakage not in time, reduce sulfur hexafluoride gas
Continue to vent in air, greenhouse gas emission will be greatly increased, and be highly detrimental to environmental protection.
Content of the invention
It is an object of the invention to overcoming the defect of prior art, provide a kind of high accuracy sulfur hexafluoride gas density relay
Device, it has the advantages that, and resistance to shock is good, high precision, good electric property, long working life.
The object of the present invention is achieved like this: a kind of high accuracy sulfur hexafluoride gas density relay, including housing and
It is located at the signal control portion in housing and the indicating value display portion relatively independent with signal control portion；Described indicating value display part
Divide and include showing Baden pipe, display end seat, movement and pointer, one end of described display Baden pipe is welded on described pedestal, institute
The other end stating display Baden pipe is welded on described display end seat, and wherein, described housing is the air chamber of a sealing, fills in this air chamber
There are the sulfur hexafluoride gas as temperature-compensating；If described signal control portion includes controlling Baden pipe, pedestal, controls end seat
Dry signal generator and signal regulation mechanism, one end of described control Baden pipe is fixed on described pedestal, described control Baden
The other end of pipe is fixed in described control end seat, and described signal regulation mechanism is arranged in described control end seat, described signal
Generator is arranged on described pedestal and by described signal regulation mechanism trigger action.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, described indicating value display portion is also included as temperature
The displays temperature compensating element, that degree compensates, one end of described display Baden pipe is fixed on described pedestal, described display Baden pipe
The other end be fixed on described display end seat, described display end seat is connected with one end of described displays temperature compensating element, described
The other end of displays temperature compensating element, is connected with described movement directly or by display linking arm and display connecting rod, described pointer
It is arranged on described movement.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, described housing include two relatively independent simultaneously
The air chamber of the sealing of described signal control portion and indicating value display portion is installed correspondingly, is filled with respectively in this two air chambers
Sulfur hexafluoride gas as temperature-compensating.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, described indicating value display portion is also included as temperature
The displays temperature compensating element, that degree compensates, one end of described display Baden pipe is fixed on described pedestal, described display Baden pipe
The other end be fixed on described display end seat, described display end seat is connected with one end of described displays temperature compensating element, described
The other end of displays temperature compensating element, is connected with described movement directly or by display linking arm and display connecting rod, described pointer
It is arranged on described movement.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, described indicating value display portion is also included as temperature
The displays temperature compensating element, that degree compensates, one end of described display Baden pipe is fixed on described pedestal, described display Baden pipe
The other end be fixed on described display end seat, described display end seat is connected with one end of described displays temperature compensating element, described
The other end of displays temperature compensating element, is connected with described movement directly or by display linking arm and display connecting rod, described pointer
It is arranged on described movement.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, described displays temperature compensating element, is bimetallic
Piece.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, described signal generator declines for needle-like button
Dynamic switch or magnetic help formula electric contact.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, installs a limit with can also adjust in described housing
Position mechanism, described signal regulation mechanism is limited in correspondence position that an is setting and being more than density alarming value by this position-limit mechanism.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, also set up in described housing one be connected to described
Control the Baden pipe guard member in Baden pipe.
Above-mentioned high accuracy sulfur hexafluoride gas density relay, wherein, also installs in described housing and controls described in a pair
Baden pipe or signal regulation mechanism play the damping mechanism of damping action.
The technical scheme of the high accuracy sulfur hexafluoride gas density relay of the present invention, signal control portion and indicating value show
Partly relatively independent, signal control portion is sealed in one simultaneously and is filled with the air chamber of sulfur hexafluoride gas, lithium using this
Sulphur gas realizes the temperature compensation function of signal control portion, and such signal control portion just to be mended without temperature compensating element
Repay, control Baden pipe and control end seat according to the density value direct control signal governor motion of sulfur hexafluoride gas, and then control
Signal generator.As long as due to control Baden pipe in its elastic range, can reliably working, so signal generator can
With the microswitch using needle-like button-type, the microswitch impulse stroke of this structure is short, the displacement that such variable density produces
Just can completely act on this microswitch, precision can be greatly improved；Realize signal control portion using sulfur hexafluoride gas
Temperature compensation function, as long as the sulfur hexafluoride gas compensating fill accurate, its temperature-compensating just accurately, is very easy to realization
High-precision temperature-compensating, can greatly improve precision again.Due to the microswitch of needle-like button-type can be adopted, and needle-like type
The light weight of button, does not have cantilever beam again, so resistance to shock might as well.Due to controlling Baden pipe and controlling end seat directly to control letter
Number governor motion, and then control signal generator (microswitch), do not have temperature compensating element and contact motion arm, just do not have yet
Cantilever beam, when operating sulphur hexafloride circuit breaker, its vibration is just little, so can greatly improve its resistance to shock again.With patent
Cn200720066586.7(is shown in Fig. 5) compare, also add sulfur hexafluoride gas density display function.Because display portion is only
Vertical, can easily realize the density monitor (- 0.1～0.9mpa) of gamut scope, particularly be very easy to real
Now it is initiated with the display of -0.1mpa, when vacuumizing, just can show vacuum, very easy popularization and application.In addition also use
Sulfur hexafluoride gas carry out the temperature compensation function of implementation value display portion, improve and ensure that precision.Six can also be utilized simultaneously
Sulfur fluoride gas adds temperature compensating element to realize the temperature compensation function of display portion, improves to greatest extent and ensures essence
Degree.Due to increased the display of sulfur hexafluoride gas density indicating value, people just can find the gas leak phenomenon of early stage, if gas leakage
It becomes possible to process the principal fault of sulfur hexafluoride electrical equipment in time, reduce sulfur hexafluoride gas and continue to vent in air,
Greenhouse gas emission will be substantially reduced, be very beneficial for environmental protection.Signal control portion additionally, due to the present invention is sealed in one and fills
Have in the air chamber of sulfur hexafluoride gas, the density monitor that this allows for the present invention is absolute pressure type density monitor, is not subject to
Height above sea level affects.Meanwhile, sulfur hexafluoride gas also have superior insulation and arc extinction performance it is possible to greatly improve control
The electric property of signal generator (microswitch), and then improve the high accuracy sulfur hexafluoride gas density relay of the present invention
Electric property, improves the service life of product, ensures the safe operation of electrical network.Present invention additionally comprises position-limit mechanism, this position restrainer
Signal regulation mechanism is limited in correspondence position that is setting and being more than density alarming value by structure, makes signal regulation mechanism with density
The increase of value is no longer moved, and when density monitor is impacted or vibrates, so that signal regulation mechanism is not occurred to vibrate or drop
The low amplitude that vibration occurs, it is to avoid signal regulation mechanism is in gas density normal mistiming trigger signal generator, it is to avoid signal is sent out
There is misoperation (locking or false alarm by mistake) in raw device, so as to greatly improve the resistance to shock of density monitor.In addition, working as hexafluoro
When the gas density changing sulphur switch is between alarming value and locking value, the locking contact of operation sulphur hexafloride circuit breaker density monitor
Misoperation will not occur, disclosure satisfy that the reclosing of sulphur hexafloride circuit breaker requires, can apply well in various sulfur hexafluorides
On electrical equipment.
Brief description
Fig. 1 is the structural representation of the first pointer sulfur hexafluoride gas density relay of prior art；
Fig. 2 is the structural representation of the second pointer sulfur hexafluoride gas density relay of prior art；
Fig. 3 is the structural representation of the third pointer sulfur hexafluoride gas density relay of prior art；
Fig. 4 is the structural representation of the 4th kind of pointer sulfur hexafluoride gas density relay of prior art；
Fig. 5 is the structural representation of the 5th kind of pointer sulfur hexafluoride gas density relay of prior art；
Fig. 6 is the structural representation of the first high accuracy sulfur hexafluoride gas density relay of the present invention；
Fig. 7 is the structural representation of the second high accuracy sulfur hexafluoride gas density relay of the present invention；
Fig. 8 is the structural representation of the third high accuracy sulfur hexafluoride gas density relay of the present invention；
Fig. 9 is the structural representation of the 4th kind of high accuracy sulfur hexafluoride gas density relay of the present invention；
Figure 10 is the structural representation of the 5th kind of high accuracy sulfur hexafluoride gas density relay of the present invention；
Figure 11 is the structural representation of the 6th kind of high accuracy sulfur hexafluoride gas density relay of the present invention；
Figure 12 is the structural representation of the 7th kind of high accuracy sulfur hexafluoride gas density relay of the present invention；
Figure 13 is the structural representation of the 8th kind of high accuracy sulfur hexafluoride gas density relay of the present invention；
Figure 14 is the structural representation of the 9th kind of high accuracy sulfur hexafluoride gas density relay of the present invention.
Specific embodiment
In order to be able to preferably understand to technical scheme, below by specific embodiment and combine accompanying drawing
It is described in detail.
Refer to Fig. 6, the first high accuracy sulfur hexafluoride gas density relay of the present invention, including relatively independent letter
Number control section and indicating value display portion, signal control portion and indicating value display portion are sealed in a hermetic housing 10
Interior, and it is filled with sulfur hexafluoride gas in hermetic housing 10.
Signal control portion include controlling Baden pipe 3a, pedestal 5, signal generator, three signal regulation mechanisms 111,
112nd, 113, end seat 14a, position-limit mechanism 22 are controlled.Pedestal 5 sealing is fixing on the housing 10.Control the head end welding of Baden pipe 3a
On pedestal 5 and with housing outside fittings, control Baden pipe 3a end be welded on control end seat 14a on.Signal Regulation
Mechanism 111,112,113 is arranged in control end seat 14a.The present embodiment adopts needle-like button-type microswitch 101,102,103
As signal generator, microswitch 101,102,103 passes through to switch fixture 18 and installing rack 20 is fixed on pedestal 5 and with
Signal regulation mechanism 111,112,113 is correspondingly arranged, and each microswitch 101,102,103 of the present embodiment and pedestal 5 distinguish position
Contact motion arm 1011 on the lower section of signal regulation mechanism 111,112,113, each microswitch 101,102,103,1021,
1031 can be contacted with corresponding signal regulation mechanism 111,112,113, the alarm contact on each microswitch and locking
Signal contact is exported by lead-out wire seat 21, and lead-out wire seat 21 sealing is fixing on the housing 10.
Display portion includes showing Baden pipe 3b, display end seat 14b, movement 6b, dial 1 and pointer 2, shows Baden pipe
One end of 3b is connected on pedestal 5, and the other end of display Baden pipe 3b is welded in display end seat 14b, display end seat 14b with aobvious
Show that connecting rod 7b is connected, the other end of display connecting rod 7b is connected with movement 6b, and pointer 2 is arranged on movement 6b.In control section
Control Baden pipe 3a and display portion in display Baden pipe 3b be to be arranged side by side and control Baden pipe 3a and show Baden
The appearance and size of pipe 3b can be equally or different.
Control Baden pipe 3a be flexible member and using the sulfur hexafluoride gas being sealed in housing 10 to change pressure
It is modified with temperature, the change of reaction sulfur hexafluoride gas density.I.e. under the pressure of tested sulfur hexafluoride gas acts on, by
In there being the sulfur hexafluoride gas that are sealed in housing 10, under same temperature environment, when sulfur hexafluoride gas are close
Degree is big, and its pressure is just big.So sealing when being more than with the sulfur hexafluoride gas density value in the switch controlling Baden pipe 3a to connect
During sulfur hexafluoride gas density value in housing 10, namely the sulfur hexafluoride gas pressure value in switch is more than and is sealed in housing
During sulfur hexafluoride gas pressure value in 10, the end controlling Baden pipe 3a is forced to produce corresponding elastic deformation and occur upwards
Displacement.If switching gas leakage and the decline of gas density value (reaching warning or locking value) to a certain extent, now switch
Interior sulfur hexafluoride gas density value is close to or smaller than when being equal to the sulfur hexafluoride gas density value being sealed in housing 10, namely
Sulfur hexafluoride gas pressure value in switch is close to or smaller than when being equal to the sulfur hexafluoride gas pressure value being sealed in housing 10,
The end controlling Baden pipe 3a produces accordingly to bottom offset, makes signal regulation mechanism 111,112,113 by controlling end seat 14a
To bottom offset, signal regulation mechanism 111,112,113 just drives the contact motion arm of corresponding microswitch 101,102,103
1011st, 1021,1031, make microswitch 101,102,103 contact send corresponding warning or block signal, reach supervision
Sulfur hexafluoride gas density with controlling in the equipment such as electric switch, makes electrical equipment trouble free service.If gas density value liter
Gao Liao, the sulfur hexafluoride gas dense body density value of the sulfur hexafluoride gas in switch is more than the sulfur hexafluoride gas being sealed in housing 10
During volume density value, namely the sulfur hexafluoride gas pressure value in switch is more than the sulfur hexafluoride gas pressure being sealed in housing 10
Value, raises and controls the end generation of Baden pipe 3a to shift up accordingly to a certain extent, control is sat up straight 14a and also shifted up,
Synchronous signal governor motion 111,112,113 just shifts up.When to a certain extent, signal regulation mechanism 111,112,113 is just
Do not trigger corresponding microswitch 101,102,103, corresponding microswitch 101,102,103 contact just disconnects, signal (is reported to the police
Or locking) just release, thus complete the function of density monitor.
The bottom of position-limit mechanism 22 is fixed by screws on pedestal 5, makes the position-limit mechanism 22 can be at one by adjusting
Correspondence position that is setting and being more than density alarming value limits control and sits up straight 14a, so restriction signal regulation mechanism 111,112,
113, so that signal regulation mechanism 111,112,113 is no longer moved with the increase of density value, and impacted in density monitor
Or during vibration, so that signal regulation mechanism 111,112,113 is not occurred to vibrate or reduce the amplitude that vibration occurs, it is to avoid Signal Regulation
Mechanism 111,112,113 is in gas density normal mistiming trigger signal generator, it is to avoid signal generator occurs misoperation (to close by mistake
Lock or false alarm) ensure system reliably working.The version of position-limit mechanism 22 can be various.
Display Baden pipe 3b in display portion is also a flexible member, lithium in housing 10 also with being sealed in
Sulphur gas is modified to the pressure and temperature of change, the change of reaction sulfur hexafluoride gas density.I.e. in tested sulfur hexafluoride
Under the pressure effect of gas, because of the effect of the sulfur hexafluoride gas being sealed in housing 10, in same temperature environment
Under, the change of its density value, pressure value also changes accordingly, forces the end of display Baden pipe 3b to produce corresponding elastic deformation
And be subjected to displacement, pass to movement 6b by means of display connecting rod 7b, movement 6b passes to pointer 2 again, by will be tested lithium
Sulphur gas density value indicates on dial 1, thus the density value of sulfur hexafluoride can be shown.
In a word, the most important feature of high accuracy density monitor of the present invention is, signal control portion is sealed in one and fills
Have in the air chamber of sulfur hexafluoride gas, realize the temperature compensation function of signal control portion using this sulfur hexafluoride gas, simultaneously
Also there is density indicating value display function.
Fig. 7 is the second high accuracy sulfur hexafluoride gas density relay of the present invention, high-precision with the first of the present invention
Degree sulfur hexafluoride gas density relay (Fig. 6) is compared, and indicating value display portion still further comprises displays temperature compensating element, 4b,
Display end seat 14b is connected with one end of displays temperature compensating element, 4b, and the other end of displays temperature compensating element, 4b is direct or logical
Cross display linking arm 13 and display connecting rod 7b is connected with movement 6b, pointer 2 is arranged on movement 6b.Present case can also so,
Indicating value display portion still further comprises displays temperature compensating element, 4b, and display end seat 14b is with displays temperature compensating element, 4b's
One end is connected, and the other end of displays temperature compensating element, 4b is directly connected with movement 6b, and pointer 2 is arranged on movement 6b.At this
In the high accuracy density monitor of invention, also due to display portion and control section are relatively independent, can be according to display
The density of the density of value and contact working value accurately to select temperature-compensating, so can improve density relay to greatest extent
The compensation precision of device, and then improve the precision of density monitor.
Fig. 8 is the third high accuracy sulfur hexafluoride gas density relay of the present invention, high-precision with the first of the present invention
Degree sulfur hexafluoride gas density relay (Fig. 6) is compared, and signal control portion and indicating value display portion are sealed in correspondingly
In two relatively independent air chambers, it is hermetic air chamber g1 and g2 respectively, be filled with lithium in this two air chambers g1, g2 respectively
Sulphur gas, realizes signal control portion and the temperature compensation function of indicating value display portion respectively using this sulfur hexafluoride gas.?
In the high accuracy density monitor of the present invention, also due to display portion and control section are relatively independent, can be according to aobvious
The density of the density of indicating value and contact working value accurately to select temperature-compensating, so can improve density to greatest extent and continue
The compensation precision of electrical equipment, and then improve the precision of density monitor.
Fig. 9 is the 4th kind of high accuracy sulfur hexafluoride gas density relay of the present invention, high-precision with the third of the present invention
Degree sulfur hexafluoride gas density relay (Fig. 8) is compared, and signal control portion and indicating value display portion are sealed in correspondingly
In two relatively independent air chambers, it is hermetic air chamber g1 and g2 respectively, wherein, air chamber g1 is filled with sulfur hexafluoride gas, gas
Room g2 is filled with the gas of standard atmospheric pressure.Signal control portion is mended using the temperature that sulfur hexafluoride gas realize signal control portion
Repay function, display portion realizes the temperature compensation function of display portion using temperature compensating element 4b.Present case is high-precision simultaneously
Degree sulfur hexafluoride gas density relay, also add and be connected to the Baden pipe controlling between Baden pipe 3a and the wall of air chamber g1
Guard member 23, it is possible to use the little Baden pipe of pressure specification, is equivalent to the displacement being exaggerated Baden pipe, can greatly improve density
The precision of relay；In transit Baden pipe can also be protected, improve the anti-transport capacity of density monitor.At this
In the high accuracy density monitor of invention, also due to display portion and control section are relatively independent, can be according to display
The density of the density of value and contact working value accurately to select temperature-compensating, so can improve density relay to greatest extent
The compensation precision of device, and then improve the precision of density monitor.
Figure 10 is the 5th kind of high accuracy sulfur hexafluoride gas density relay of the present invention, high-precision with the 4th kind of the present invention
Degree sulfur hexafluoride gas density relay (Fig. 9) is compared, and signal control portion is sealed in an independent hermetic air chamber g1
In, air chamber g1 is filled with sulfur hexafluoride gas.And display portion is arranged in the housing 10 ' that another is connected with air chamber g1, this shows
Show that part is connected with air.Signal control portion realizes the temperature-compensating work(of signal control portion using sulfur hexafluoride gas
Can, display portion realizes the temperature compensation function of display portion using temperature compensating element 4b.High accuracy density in the present invention
In relay, also due to display portion and control section are relatively independent, can be moved according to the density of show value and contact
The density of work value accurately to select temperature-compensating, so can improve the compensation precision of density monitor to greatest extent, enter
And improve the precision of density monitor.
Figure 11 is the 6th kind of high accuracy sulfur hexafluoride gas density relay of the present invention, high-precision with the first of the present invention
Degree sulfur hexafluoride gas density relay (Fig. 6) is compared, and also includes a control movement 6a and pointer 6a1, and is adjusted with signal
Section mechanism 111,112,113 is reference position, and each microswitch 101,102,103 is located at signal regulation mechanism 111,112,113
Top, and pedestal 5 be located at signal regulation mechanism 111,112,113 lower section.Contact motion arm 1011 on each microswitch,
1021st, 1031 can contact with corresponding signal regulation mechanism 111,112,113.End seat 14a is controlled to be connected with controls connecting rod 7a,
Controls connecting rod 7a is connected with movement 6a, and pointer 6a1 is arranged on movement 6a.Position-limit mechanism 22 is fixed on movement 6a or pedestal 5,
By adjusting and combining pointer 6a1, make position-limit mechanism 22 can one setting and be more than alarming value density value correspondence
Position limitation controls sits up straight 14a, and then limits signal regulation mechanism 111,112,113, makes signal regulation mechanism 111,112,113
Increase with density value is no longer moved, and when density monitor is impacted or vibrates, make signal regulation mechanism 111,
112nd, 113 do not occur to vibrate or reduce the amplitude that vibration occurs, it is to avoid signal regulation mechanism 111,112,113 is in gas density just
Often mistiming trigger signal generator, makes signal generator avoid occurring misoperation (locking or false alarm by mistake) to ensure system reliability work
Make.The form of position-limit mechanism 22 can be various and also can arrange a magnetic and help formula electric contact it is therefore an objective to make density monitor
When being impacted or vibrating, signal regulation mechanism 111,112,113 is made not occur to vibrate or reduce the amplitude that vibration occurs, it is to avoid
Signal generator occurs misoperation (locking or false alarm by mistake) to ensure system reliably working.The indicating value display portion of present case is also entered
One step includes displays temperature compensating element, 4b, and one end of displays temperature compensating element, 4b is connected with display end seat 14b, displays temperature
The other end of compensating element, 4b is connected with movement 6b directly or by display linking arm 13 and display connecting rod 7b, and pointer 2 is arranged on
On movement 6b.In the high accuracy density monitor of the present invention, also due to display portion and control section are relatively independent,
Temperature-compensating can accurately be selected according to the density of the density of show value and contact working value, so can be to greatest extent
Improve the compensation precision of density monitor, and then improve the precision of density monitor.
Figure 12 and Figure 13 is the 7th kind of high accuracy sulfur hexafluoride gas density relay of the present invention, the 6th with the present invention
Plant high accuracy sulfur hexafluoride gas density relay (Figure 11) to compare, also include a control movement 6a and pointer 6a1, and control
Movement 6a is fixed on the afterbody of pedestal 5.Each microswitch 101,102,103 of the present embodiment and pedestal 5 are located at signal respectively and adjust
The lower section of section mechanism 111,112,113, that is, with signal regulation mechanism 111,112,113 as reference position, each microswitch 101,
102nd, 103 it is located at the lower section of signal regulation mechanism 111,112,113, and pedestal 5 also is located at signal regulation mechanism 111,112,113
Lower section.Certainly each microswitch position can also change, that is, with signal regulation mechanism 111,112,113 as reference position, respectively
Microswitch 101,102,103 may be located at the top of signal regulation mechanism 111,112,113.
Figure 14 is the 8th kind of high accuracy sulfur hexafluoride gas density relay of the present invention, including relatively independent signal control
System partly and with indicating value display portion, wherein control Baden pipe 3a and display Baden pipe 3b is arranged in a nesting relation, the control of in figure
The relative position of Baden pipe 3a processed and display Baden pipe 3b can be exchanged, and other parts can correspond to control Baden pipe 3a and show
The location arrangements showing Baden pipe 3b are in housing.
The signal generator of the signal control portion of high accuracy sulfur hexafluoride gas density relay of the present invention is acceptable
Formula electric contact is helped using magnetic.Because magnetic helps formula electric contact to be sealed in the air chamber being filled with sulfur hexafluoride gas, and sulfur hexafluoride gas
Body has good insulation and arc extinguishing ability it is possible to greatly improve the electric property that magnetic helps formula electric contact.
The control section of the high accuracy sulfur hexafluoride gas density relay of the present invention be located at hermetic be filled with lithium
In the housing of sulphur gas or air chamber, can be connected with the temperature-sensitive bag gas circuit being located at outside housing by connecting tube.During use, temperature-sensitive bag
It is in same environment with tested source of the gas, enable density monitor to accurately reflect sulfur hexafluoride equipment that is measured or monitoring
The temperature of gas, can the density of sulfur hexafluoride equipment that monitored of actual response, greatly improve this high accuracy hexafluoro
Change the range of application of sulphur gas density relay, can apply well on sulfur hexafluoride electrical equipment.
The high accuracy sulfur hexafluoride gas density relay of the present invention also includes the damping mechanism being arranged in air chamber, this resistance
Buddhist nun mechanism will make control Baden pipe or signal regulation mechanism in density to controlling Baden pipe or signal regulation mechanism to play damping action
When relay is impacted or vibrates, control Baden pipe or signal regulation mechanism is made not to be subjected to displacement or reduce the width being subjected to displacement
Degree, it is to avoid signal generator described in signal regulation mechanism false triggering when gas density is normal.
Above example is used for illustrative purposes only, rather than limitation of the present invention, about the technology people of technical field
Member, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all equivalent
Technical scheme also should belong to scope of the invention, should be limited by each claim.
Claims (6)
1. a kind of high accuracy sulfur hexafluoride gas density relay, including housing and be located at signal control portion in housing and with
The relatively independent indicating value display portion of signal control portion；Described indicating value display portion includes showing Baden pipe, display end seat, machine
Core and pointer, one end of described display Baden pipe is welded on pedestal, and the other end of described display Baden pipe is welded on described showing
Show end seat it is characterised in that
Described housing is the air chamber of a sealing, is filled with the sulfur hexafluoride gas as temperature-compensating in this air chamber；
Described signal control portion includes controlling Baden pipe, described pedestal, controls end seat, some signal generators and Signal Regulation
Mechanism, one end of described control Baden pipe is fixed on described pedestal, and the described other end controlling Baden pipe is fixed on described control
In end seat processed, described signal regulation mechanism is arranged in described control end seat, and described signal generator is arranged on described pedestal
And by described signal regulation mechanism trigger action,
Described indicating value display portion also includes the displays temperature compensating element, as temperature-compensating, one end of described display Baden pipe
Be fixed on described pedestal, the other end of described display Baden pipe is fixed on described display end seat, described display end seat with described
One end of displays temperature compensating element, is connected, the other end of described displays temperature compensating element, directly or by display linking arm and
Display connecting rod is connected with described movement, and described pointer is arranged on described movement
Described housing include two relatively independent and described signal control portion and indicating value display portion are installed correspondingly
Sealing air chamber, be filled with the sulfur hexafluoride gas as temperature-compensating in this two air chambers respectively.
2. high accuracy sulfur hexafluoride gas density relay according to claim 1 is it is characterised in that described displays temperature
Compensating element, is bimetal leaf.
3. high accuracy sulfur hexafluoride gas density relay according to claim 1 is it is characterised in that described signal occurs
Device is needle-like push button microswitch or magnetic helps formula electric contact.
4. high accuracy sulfur hexafluoride gas density relay according to claim 1 is it is characterised in that go back in described housing
Adjustable ground installs a position-limit mechanism, this position-limit mechanism by described signal regulation mechanism be limited in a setting and more than density report
The correspondence position of alert value.
5. high accuracy sulfur hexafluoride gas density relay according to claim 1 is it is characterised in that go back in described housing
Setting one is connected to the described Baden pipe guard member controlling in Baden pipe.
6. high accuracy sulfur hexafluoride gas density relay according to claim 1 is it is characterised in that go back in described housing
Install and described in a pair, control Baden pipe or signal regulation mechanism to play the damping mechanism of damping action.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310426104.4A CN103456561B (en) | 2013-09-18 | 2013-09-18 | High-precision sulfur hexafluoride gas density relay |
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| CN201310426104.4A CN103456561B (en) | 2013-09-18 | 2013-09-18 | High-precision sulfur hexafluoride gas density relay |
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| CN103456561B true CN103456561B (en) | 2017-01-18 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700541B (en) * | 2014-01-16 | 2016-04-20 | 上海乐研电气科技有限公司 | A kind of sulfur hexafluoride gas density relay of thin type |
| CN104299844B (en) * | 2014-10-21 | 2016-08-24 | 上海乐研电气科技有限公司 | A kind of wide range sulfur hexafluoride gas density relay |
| CN104377077A (en) * | 2014-10-21 | 2015-02-25 | 上海乐研电气科技有限公司 | High vibration resistance sulfur hexafluoride gas density relay |
| CN107871642B (en) * | 2017-11-29 | 2021-01-08 | 上海乐研电气有限公司 | High-precision gas density relay |
| CN111952105B (en) * | 2020-07-07 | 2022-07-12 | 国家电网有限公司 | Full-range high-precision remote transmission type sulfur hexafluoride gas density relay |
| CN112133596B (en) * | 2020-10-19 | 2024-07-05 | 国网新疆电力有限公司乌鲁木齐供电公司 | Adjustable pointer type sulfur hexafluoride density relay |
| CN112595628B (en) * | 2020-11-23 | 2024-04-05 | 国网安徽省电力有限公司检修分公司 | Oilless anti-seismic remote sulfur hexafluoride gas density monitor |
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| US3749865A (en) * | 1971-02-24 | 1973-07-31 | Bbc Brown Boveri & Cie | Temperature responsive control switch with bi-metallic disk means |
| CN2845150Y (en) * | 2005-11-02 | 2006-12-06 | 上海正保仪表厂台州分厂 | Multifunctional sulfur hexafluoride gas density controller |
| CN203521304U (en) * | 2013-09-18 | 2014-04-02 | 上海乐研电气科技有限公司 | High-precision sulfur hexafluoride gas density relay |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364024C (en) * | 2005-04-11 | 2008-01-23 | 平高集团有限公司 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749865A (en) * | 1971-02-24 | 1973-07-31 | Bbc Brown Boveri & Cie | Temperature responsive control switch with bi-metallic disk means |
| CN2845150Y (en) * | 2005-11-02 | 2006-12-06 | 上海正保仪表厂台州分厂 | Multifunctional sulfur hexafluoride gas density controller |
| CN203521304U (en) * | 2013-09-18 | 2014-04-02 | 上海乐研电气科技有限公司 | High-precision sulfur hexafluoride gas density relay |
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Effective date of registration: 20170119 Address after: 201802 Shanghai City, Jiading District Nanxiang Town, Yun North Road 1755 Lane 21, B zone four Patentee after: Shanghai joy Electric Co., Ltd. Address before: Qingpu District of Shanghai city Shen brick road building 200237 new No. 221 Building 1 B zone 1 room 123 Patentee before: Shanghai Roye Electronic Science & Technology Co., Ltd. |