CN211604957U - Thin high vibration resistance gas density relay - Google Patents
Thin high vibration resistance gas density relay Download PDFInfo
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- CN211604957U CN211604957U CN202020289838.8U CN202020289838U CN211604957U CN 211604957 U CN211604957 U CN 211604957U CN 202020289838 U CN202020289838 U CN 202020289838U CN 211604957 U CN211604957 U CN 211604957U
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Abstract
The utility model discloses a high anti vibration gas density relay of thin type, including the casing and establish the signal control mechanism in the casing and with the relatively independent indication display part of signal control mechanism. The signal control mechanism mainly comprises at least one corrugated pipe, a sealed compensation air chamber and at least one microswitch. The corrugated pipe is perpendicular to the side wall of the shell. The indicating value display mechanism mainly comprises a bourdon tube, a base, an end seat, a machine core, a pointer and a dial. The utility model discloses a high anti vibration gas density relay has need not oil charge, the vibration resistance can be good again, the precision is high, electric property is good, the appearance is thin again, long service life's advantage.
Description
Technical Field
The utility model relates to a power equipment technical field especially relates to a high anti vibration gas density relay of thin shape.
Background
At present, an oil-free gas density relay with a microswitch as a contact point is generally adopted for monitoring the gas density in electrical equipment, and the microswitch adopted by the gas density relay has the advantage of good electrical performance, but has poor precision because the microswitch is provided with an operating arm and has limited displacement. More outstanding is because the length of its structural contact operating arm is longer, is a cantilever beam moreover, when operating switch, causes the vibration of contact operating arm very big, and then causes the gas density relay to appear the malfunction, appears destroying micro-gap switch even, has lost the performance completely. In a word, the vibration resistance is poor, the precision performance is poor, the range display range is small, and the reliable work of the system is difficult to ensure.
The present applicant has also disclosed some gas density relays in chinese patents or patent applications 200510110648.5, 200720066586.7, 200910195174.7, 200920209217.8, 201010171798.8, 201020190271.5, 201210032293.2, 201220047225.9, 200920075456.9, in which the gas density relays disclosed in patent 200510110648.5 and 200910195174.7 include a display portion and a control portion, and the display portion and the control portion are temperature-compensated with temperature compensation plates, respectively, making it difficult to achieve high-precision operation and display. Meanwhile, more prominently, because the length of the contact operating arm on the structure is longer, and the cantilever beam is adopted, when the switch is operated, the vibration of the contact operating arm is very large, and further the gas density relay is caused to generate misoperation, even the microswitch is damaged, the performance is completely lost, in short, the vibration resistance performance is poor, the precision performance is poor, and the reliable work of the system is difficult to ensure.
The gas density relays disclosed in the patent nos. 201020190271.5 and 201010171798.8 further include a displacement amplification mechanism, the starting end of which is connected to the other end of the temperature compensation element, and the amplification end drives the contact operating handle of the micro switch to make or break the contact on the micro switch; when the density value of the gas changes, the Bourdon tube and the temperature compensation element generate displacement, and the displacement is amplified by the displacement amplifying mechanism and then transmitted to the microswitch, so that the microswitch sends out a corresponding signal to complete the function of the density relay. However, when the switch is switched on and off, vibration is generated on the bourdon tube and the temperature compensation element, the vibration can cause the displacement of the bourdon tube and the temperature compensation element, and the displacement is amplified by the displacement amplifying mechanism and then transmitted to the micro switch, so that the micro switch sends a corresponding signal. Therefore, false operation can be caused, namely, the vibration resistance is poor, the reliable work of the system cannot be ensured, and great hidden danger is brought to the safe operation of the power grid. Meanwhile, the gas density relays cannot meet the reclosing requirements of the switch. That is, when the inflation pressure (density) is less than the alarm pressure value, the impact test of 50g and 11ms cannot be carried, and at this time, the latching contact may malfunction. For example: when the gas pressure (density) of the 0.6/0.52/0.5 density relay is reduced to an alarm action point, 50g and 11ms impact tests are carried out at the moment, the locking contact can generate misoperation, the switch is locked, and the reclosing requirement of the switch can not be met. The drawback of patent 200520115321.2 is similar to that of patent 201010171798.8, and the displacement caused by vibration is amplified by the displacement amplifying mechanism and then transmitted to the micro switch (i.e. transmitted to the control machine core shaft through the control sector gear and then transmitted to the micro switch through the control machine core shaft), so that the displacement caused by vibration is greatly amplified, which is equivalent to that the vibration becomes more severe. Since the vibration is large during the switching on and off operations of the switch, there is a particular need for gas density relays having better vibration resistance, which cannot be handled by these gas density relays.
The gas density relay adopts the temperature compensation piece to perform temperature compensation, high precision is difficult to realize, and meanwhile, the shell is not fully sealed, is a relative pressure type density relay and can be influenced by altitude.
Patent 200920075456.9 in the name of the applicant discloses an oil-filled vibration resistant gas density relay, although the contacts of the density relay also adopt microswitches, various density relays installed on site have the problem that the liquid (vibration resistant oil) in the shell of the density relay leaks after a period of time. Patent 200920075456.9 and the oil-filled electric contact density relays in large use at present have very common oil leakage phenomenon at the observation window (surface glass) of the density relays from the practical operation aspect, which seriously affects the safety and reliability of the system, and simultaneously, if the density relays are replaced, much expenses are needed. The reason for this is that, after long-term observation and analysis, the observation windows (surface glass) on these density relays are sealed on a small arc surface, and the sealing effect itself is not good, and in addition, the sealing rings are aged, and the oil leakage or gas leakage problem often occurs naturally. In the area with high altitude, the surface glass even explodes due to large pressure difference of the surface glass, so that the safety problem is caused. For an absolute pressure type oil-filled density relay, the surface glass explosion phenomenon can also occur due to the fact that the temperature rises and the pressure difference between the inside and the outside of a shell is large, and the safety problem occurs. In short, the action contact of the density relay used at present mainly adopts an electric contact type and a microswitch type, the electric contact type density relay generally needs to be filled with shockproof silicone oil for shock resistance, the microswitch type density relay also needs to be filled with shockproof silicone oil in some special vibration occasions, and the control part and the actual part of the density relay filled with shockproof oil in the world are in a shell, the display part needs to be observed, so that the density relay is provided with an observation window (surface glass), and the natural observation window (surface glass) is also soaked in the shockproof oil when the shockproof oil is filled. The observation window (watch glass) and the shell are sealed on the cambered surface (or the small cambered surface), the sealing effect is poor, the sealing ring is aged, the oil leakage problem often occurs, the loss is brought to users, and even the safety problem is solved, so that innovation is urgently needed. Therefore, it is highly desirable to provide a gas density relay which has good contact shock resistance, good display shock resistance, high precision, good electrical performance, long service life, and thin overall size, and can be used in various applications.
Disclosure of Invention
The utility model aims at providing a high anti vibration gas density relay of thin shape to solve the problem that above-mentioned prior art exists, it has that the anti vibration performance is good, the precision is high, electric property is good, long service life, overall dimension are thin again advantage.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a thin high vibration resistance gas density relay, which comprises a relay shell, a signal control mechanism and an indication display mechanism, wherein the signal control mechanism and the indication display mechanism are arranged in the relay shell and are relatively independently arranged; the signal control mechanism is communicated with the indicating value display mechanism on a gas path;
the signal control mechanism comprises a corrugated pipe, a sealed cavity, a signal generator and a signal adjusting mechanism, and the corrugated pipe is transversely arranged and positioned in the sealed cavity; one end of the corrugated pipe is sealed, the other end of the corrugated pipe is communicated with electrical equipment, and compensation gas is arranged in the sealed cavity; or both ends of the corrugated pipe are sealed to form a sealing cavity, compensation gas is arranged in the sealing cavity of the corrugated pipe, and the sealing cavity is communicated with electrical equipment; the signal control mechanism monitors the gas density by utilizing the corrugated pipe and the sealed cavity, and when the gas density in the electrical equipment changes, the corrugated pipe compresses or expands to generate axial displacement so as to drive the signal adjusting mechanism to trigger the signal generator to generate a signal;
the indicating value display mechanism comprises a Bardon tube, a base, an end seat, a temperature compensation element, a machine core, a pointer and a dial, wherein one end of the base is directly or indirectly connected with the relay shell, the other end of the base is directly or indirectly connected with the dial, one end of the Bardon tube is fixed on the base, the other end of the Bardon tube and one end of the temperature compensation element are fixed on the end seat, the other end of the temperature compensation element is directly or sequentially connected with the machine core through a connecting arm and a connecting rod, and the pointer is installed on the machine core.
Preferably, the head end of the relay shell is further provided with a transparent front layer of glass, the front layer of glass is opposite to the dial, the front layer of glass is fixed on the relay shell through a meter cover, and a sealing ring is arranged between the meter cover and the front layer of glass.
Preferably, the base is connected with the shell bottom of the relay shell through a support piece, the base is connected with the dial through a bolt or a movement, and a vent hole communicated with the badon tube is formed in the base.
Preferably, the signal control mechanism further comprises a control shell, a first sealing element, a second sealing element, a third sealing element and an outlet connecting seat; one end of the corrugated pipe is welded on the first sealing element, and the other end of the corrugated pipe is welded on the second sealing element; a first sealing cavity is arranged in the corrugated pipe, and compensation gas is filled in the first sealing cavity to form a sealing compensation gas chamber; the outlet connecting seat is fixed on a third sealing element or a control shell in a sealing way, and the control shell is respectively connected with the first sealing element and the third sealing element in a sealing way; a second sealed cavity is arranged in the control shell outside the corrugated pipe, the second sealed cavity is communicated with electrical equipment, and the second sealed cavity is communicated with the indicating value display mechanism on a gas path; the signal adjusting mechanism and the signal generator are arranged in the second sealed cavity;
or the first sealed cavity is communicated with the electrical equipment and is communicated with the indicating value display mechanism on a gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber.
Preferably, the signal control mechanism further comprises a control shell, a first sealing element, a second sealing element, a third sealing element, a plugging corrugated pipe and a wire outlet connecting seat; the outlet connecting seat is fixed on the control shell, the third sealing element is arranged in the control shell and divides the interior of the control shell into a second sealing cavity and a signal adjusting cavity, the corrugated pipe is arranged in the second sealing cavity, one end of the corrugated pipe is welded on the first sealing element, the other end of the corrugated pipe is welded on the second sealing element, a first sealing cavity is arranged in the corrugated pipe, and compensation gas is filled in the first sealing cavity to form a sealed compensation gas chamber; one end of the plugging corrugated pipe is welded on the second sealing element, the other end of the plugging corrugated pipe is welded on the third sealing element, the control shell is respectively connected with the first sealing element and the third sealing element in a sealing way, the second sealing cavity is communicated with electrical equipment, and the second sealing cavity is communicated with the indicating value display mechanism on a gas path; the signal regulating mechanism and the signal generator are arranged in the signal regulating cavity;
or the first sealed cavity is communicated with the electrical equipment and is communicated with the indicating value display mechanism on the gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber.
Preferably, the signal adjusting mechanism is connected with the corrugated pipe through a trigger rod, and the trigger rod pulls or pushes the signal adjusting mechanism to trigger the signal generator to generate a signal.
Preferably, a guide member is provided on the trigger lever.
Preferably, the signal control mechanism further comprises an air inlet communicated with the electrical equipment, and the air inlet and the outlet connecting seat are respectively arranged at two ends of the control shell.
Preferably, the signal control mechanism is fixed at the bottom of the relay housing through a fixing piece.
Preferably, the signal control mechanism further comprises a limiting mechanism, and the limiting mechanism is arranged on the control shell and is opposite to the signal adjusting mechanism, and is used for limiting the signal adjusting mechanism.
Preferably, the relay further comprises a connecting joint, a first connecting pipe and a second connecting pipe, wherein the connecting joint is connected with electrical equipment and fixed on the relay shell, one end of the first connecting pipe is connected with the electrical equipment through the connecting joint, the other end of the first connecting pipe is connected to the base and communicated with the vent hole in the base, one end of the second connecting pipe is connected to the base and communicated with the vent hole in the base, and the other end of the second connecting pipe is communicated with the signal control mechanism through the air inlet;
or one end of the first connecting pipe and one end of the second connecting pipe are respectively connected with the electrical equipment through the connecting joint, the other end of the first connecting pipe is connected to the base and communicated with the vent hole in the base, and the other end of the second connecting pipe is communicated with the signal control mechanism through the air inlet;
or one end of the first connecting pipe is connected with the electrical equipment through the connecting joint, the other end of the first connecting pipe is communicated with the signal control mechanism through the air inlet, one end of the second connecting pipe is communicated with the signal control mechanism through the air inlet, and the other end of the second connecting pipe is connected to the base and is communicated with the air vent in the base.
Preferably, the outer side of the bottom of the relay shell is further provided with a chassis, the connecting joint is fixed on the chassis, and the chassis is fixedly connected with the relay shell through at least one shock absorber.
Preferably, the relay housing is a sealed air chamber, and the inside of the relay housing is filled with gas or shockproof oil.
Preferably, the outside of the signal control mechanism or the outside of the relay shell is wrapped with an insulating layer.
Preferably, the gas density relay further comprises an electronic signal remote transmission unit, wherein the electronic signal remote transmission unit comprises a pressure sensor, a temperature sensor, a microprocessor and a communication module; the microprocessor is respectively connected with the pressure sensor, the temperature sensor and the communication module; the microprocessor collects pressure and temperature signals through the pressure sensor and the temperature sensor, corresponding density values are obtained through processing of the microprocessor according to gas pressure-temperature characteristics, and data obtained by the microprocessor are remotely transmitted through the communication module, so that the gas density of the electrical equipment is monitored on line.
Preferably, the temperature compensation element is a bimetal, or a bourdon tube sealed with compensation gas, or a micro bellows sealed with compensation gas.
The utility model discloses following beneficial technological effect has been gained for prior art:
the utility model provides a high anti vibration gas density relay of thin type compares with the present type of filling electric contact formula density relay that uses in a large number, has adopted signal control mechanism and indication display mechanism relatively independent on the one hand, signal control mechanism mainly includes at least one bellows, sealed compensation air chamber, at least one micro-gap switch. The corrugated pipe is perpendicular to the side wall of the shell. The indicating value display mechanism mainly comprises a bourdon tube, a base, an end seat, a machine core, a pointer and a dial. The utility model discloses a high anti vibration gas density relay has need not oil charge, the vibration resistance can be good again, the precision is high, electric property is good, the appearance is thin again, long service life's advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic side view of a thin high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of an oblique side structure of a thin high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 3 is a schematic front partial structure diagram of a thin high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 4 is a schematic rear partial structure view of a thin high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a signal control portion of a thin high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 6 is a schematic structural view of a signal control portion of a thin high vibration resistance gas density relay according to a second embodiment of the present invention;
in the figure: 1-dial, 2-pointer, 3-baton tube, 4-temperature compensation element, 5-base, 6-movement, 7-connecting rod, 8-supporting piece, 9-relay shell, 10-meter cover, 11-meter glass, 12-sealing ring, 13-connecting arm, 14-end seat, 15-first sealing piece, 16-control shell, 17-corrugated tube, 18-second sealing piece, 19-signal generator, 20-signal regulating mechanism, 201-signal regulating piece, 21-second sealing cavity, 22-first sealing cavity, 23-fixing piece, 24-wire outlet connecting seat, 25-base, 26-vibration damper, 27-connecting joint, 28-air inlet, 29-limiting mechanism, 30-first connecting pipe, 31-second connecting pipe, 32-third sealing element, 33-guiding element, 34-sealing corrugated pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a high anti vibration gas density relay of thin shape to solve the problem that prior art exists.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The thin high vibration resistance gas density relay in the embodiment, as shown in fig. 1-5, includes a relay housing 9, a signal control mechanism and a value display mechanism, wherein the signal control mechanism and the value display mechanism are both arranged in the relay housing 9 and are relatively independently arranged; the signal control mechanism is communicated with the indicating value display mechanism on a gas path.
The signal control mechanism comprises a corrugated pipe 17, a second sealed cavity 21, a first sealed cavity 22, a signal generator 19 and a signal adjusting mechanism 20, and the corrugated pipe 17 is arranged in the second sealed cavity 21; one end of the corrugated pipe 17 is sealed, the other end of the corrugated pipe 17 is communicated with the electrical equipment, and compensation gas is arranged in the second sealed cavity 21; or, both ends of the corrugated pipe 17 are sealed to form a first sealed cavity 22, the first sealed cavity 22 of the corrugated pipe 17 is internally provided with compensation gas, and the second sealed cavity 21 is communicated with the electrical equipment; the signal control mechanism monitors the gas density by using the corrugated pipe 17 and the sealed cavity, when the gas density in the electrical equipment changes, the corrugated pipe 17 compresses or expands to generate axial displacement, and the signal adjusting mechanism 20 is driven to trigger the signal generator 19 to generate a signal;
the indicating value display mechanism comprises a Barton tube 3, a base 5, an end seat 14, a temperature compensation element 4, a machine core 6, a pointer 2 and a dial 1, wherein one end of the base 5 is connected with a relay shell 9 through a fastener in a direct fixed mode or an indirect fixed mode through an intermediate support piece, the other end of the base 5 is connected with the dial 1 through a fastening bolt in a fixed mode, one end of the Barton tube 3 is welded on the base 5, the other end of the Barton tube 3 and one end of the temperature compensation element 4 are fixed on the end seat 14, the other end of the temperature compensation element 4 is connected with the machine core 6 directly or sequentially through a connecting arm 13 and a connecting rod 7, and the pointer 2 is installed on the.
In this embodiment, a transparent front glass 11 is further provided at the head end of the relay housing 9, the front glass 11 is opposite to the dial 1, the front glass 11 is fixed to the relay housing 9 through a cover 10, and a seal ring 12 is provided between the cover 10 and the front glass 11.
In this embodiment, the base 5 is connected with the bottom of the relay housing 9 through the support member 8, the base 5 is fixedly connected with the dial 1 through a bolt, and a vent hole communicated with the badon tube 3 is formed in the base 5.
In this embodiment, the operation principle of the indication display mechanism is as follows: the bourdon tube 3 in the indicating mechanism is an elastic element, and the temperature compensating element 4 is used for correcting the changing pressure and temperature and changing the density of the reaction gas. Under the pressure of the measured gas, the temperature compensating element 4 is used to force the tail end of the bourdon tube 3 to generate corresponding elastic deformation and displacement, the elastic deformation is transmitted to the movement 6 by the connecting rod 7, the movement 6 is transmitted to the pointer 2, the measured gas density value is indicated on the dial 1, and the density relay has the function of displaying the density value.
The signal control mechanism in this embodiment further comprises a control housing 16, a first seal 15, a second seal 18, a third seal 32 and an outlet connection seat 24; wherein, one end of the corrugated pipe 17 is welded on the first sealing element 15, and the other end of the corrugated pipe 17 is welded on the second sealing element 18; a first sealed cavity 22 is arranged in the corrugated pipe 17, and compensation gas is filled in the first sealed cavity 22 to form a sealed compensation gas chamber; the outlet connecting seat 24 is fixed on the third sealing element 32 or the control shell 16, and two ends of the control shell 16 are respectively connected with the first sealing element 15 and the third sealing element 32 in a sealing way; a second sealed cavity 21 is arranged in the control shell 16 outside the corrugated pipe 17, the second sealed cavity 21 is communicated with electrical equipment, and the second sealed cavity 21 is communicated with the indicating value display mechanism on an air path; the signal regulating mechanism 20 and the signal generator 19 are arranged in the second sealed cavity 21;
or the first sealed cavity 22 is communicated with the electrical equipment and is communicated with the indicating value display mechanism on the air path, and the second sealed cavity 21 is filled with compensation gas to form a sealed compensation air chamber.
Specifically, the signal adjusting mechanism 20 is connected to the bellows 17 through a trigger rod, the trigger rod pulls or pushes the signal adjusting mechanism 20 to trigger the signal generator 19 to generate a signal, and the trigger rod is provided with a guide 33 for guiding the movement of the trigger rod.
The working principle of the signal control mechanism is as follows: under the same temperature environment, the first sealed cavity 22 and the second sealed cavity 21 have the same density and the same pressure, and the same density and the same pressure have the same low pressure. At 20 ℃, if the cavity sealed with the compensation air chamber is the first sealed cavity 22, the inflation pressure in the first sealed cavity 22 is the same as the alarm value, and the pressure difference Δ P between the alarm operation pressure value psarm and the inflation pressure of the first sealed cavity 22 is 0MPa, which means that when Δ P is 0MPa, the alarm contact point is operated. Regardless of the temperature rise or fall, if the gas of the electrical equipment leaks, when the pressure P of the electrical equipment is equal to P alarm, that is, Δ P is equal to 0MPa, the density relay triggers the corresponding signal generator 19 through the signal adjusting mechanism 20, the contact of the signal generator 19 is turned on, and a corresponding signal (alarm or lock) is sent, so that the gas density in the equipment such as a high-voltage switch and the like is monitored and controlled, and the electrical equipment is enabled to work safely.
In this embodiment, the signal control mechanism is fixed to the case bottom of the relay case by a fixing member 23.
In this embodiment, the signal control mechanism further includes a limiting mechanism 29, and the limiting mechanism 29 is disposed on the control housing 16 and opposite to the signal adjusting mechanism 20, and is used for limiting the signal adjusting mechanism 20.
The signal control mechanism further comprises an air inlet 28 communicated with the electrical equipment, and the air inlet 28 and the outlet connecting seat 24 are respectively arranged at two ends of the control shell 9.
In order to realize that the first sealed cavity 22 or the second sealed cavity 21 is communicated with the indicating value display mechanism on the gas path, the relay case further comprises a connecting joint 27, a first connecting pipe 30 and a second connecting pipe 31, wherein the connecting joint 27 is connected with the electrical equipment and fixed on the relay case 9, one end of the first connecting pipe 30 is connected with the electrical equipment through the connecting joint 27, the other end of the first connecting pipe 30 is connected on the base 5 and communicated with the vent hole in the base 5 so as to be communicated with the baton pipe 3, one end of the second connecting pipe 31 is connected on the base 5 and communicated with the vent hole in the base 5, and the other end of the second connecting pipe 31 is communicated with the signal control mechanism through the gas inlet 28;
or, one end of the first connection pipe 30 and one end of the second connection pipe 31 are respectively connected with the electrical equipment through the connection joint 27, the other end of the first connection pipe 30 is connected to the base 5 and is communicated with the vent hole in the base 5, and the other end of the second connection pipe 31 is communicated with the signal control mechanism through the air inlet 28;
alternatively, one end of the first connection pipe 30 is connected to the electrical device through the connection joint 27, the other end of the first connection pipe 30 is communicated with the signal control mechanism through the air inlet 28, one end of the second connection pipe 31 is communicated with the signal control mechanism through the air inlet 28, and the other end of the second connection pipe 31 is connected to the base 5 and is communicated with the air vent in the base 5.
In this embodiment, a chassis 25 is further disposed at the outer side of the bottom of the relay housing 9, the connection joint 27 is fixed on the chassis 25, and the chassis 25 and the relay housing 9 are fixedly connected through at least one damper.
In this embodiment, the relay housing 9 is a sealed air chamber, and gas or shockproof oil is filled inside the relay housing; and the heat insulation layer is wrapped outside the signal control mechanism or the relay shell 9.
In this embodiment, the gas density relay further comprises an electronic signal remote transmission unit, wherein the electronic signal remote transmission unit comprises a pressure sensor, a temperature sensor, a microprocessor and a communication module; the microprocessor is respectively connected with the pressure sensor, the temperature sensor and the communication module; the microprocessor collects pressure and temperature signals through the pressure sensor and the temperature sensor, corresponding density values are obtained through processing of the microprocessor according to gas pressure-temperature characteristics, and data obtained by the microprocessor are remotely transmitted through the communication module, so that the gas density of the electrical equipment is monitored on line.
The temperature compensation element 4 is a bimetallic strip, or a bourdon tube sealed with compensation gas, or a micro bellows sealed with compensation gas.
The thin high vibration resistance gas density relay in the present embodiment further includes: the micro-water sensor is respectively connected with the signal control mechanism or the display mechanism, and/or the decomposition product sensor is respectively connected with the signal control mechanism or the display mechanism, and/or the gas purity sensor is respectively connected with the signal control mechanism or the display mechanism.
Example two:
the difference between this embodiment and the first embodiment is: as shown in fig. 6, the signal control mechanism further includes a control housing 16, a first sealing member 15, a second sealing member 18, a third sealing member 32, a blocking bellows 34 and an outlet connecting seat 24; the outgoing line connecting seat 24 (not shown in the figure) is fixed on the control shell 16, the third sealing element 32 is arranged in the control shell 16, the third sealing element 32 divides the interior of the control shell 16 into a second sealing cavity 21 and a signal adjusting cavity, the corrugated pipe 17 is arranged in the second sealing cavity 21, one end of the corrugated pipe 17 is welded on the first sealing element 15, the other end of the corrugated pipe 17 is welded on the second sealing element 18, the corrugated pipe 17 is internally provided with a first sealing cavity 22, and the first sealing cavity 22 is filled with compensation gas to form a sealed compensation gas chamber; one end of the plugging corrugated pipe 34 is welded on the second sealing element 18, the other end of the plugging corrugated pipe is welded on the third sealing element 32, the control shell 16 is respectively connected with the first sealing element 15 and the third sealing element 32 in a sealing way, the second sealing cavity 21 is communicated with electrical equipment, and the second sealing cavity 21 is communicated with the indicating value display mechanism on a gas path; the signal conditioning mechanism 20 and the signal generator 19 are arranged in the signal conditioning cavity; or, the first sealed cavity 22 is communicated with the electrical equipment and is communicated with the indicating value display mechanism on the air path, and the second sealed cavity 21 is filled with compensation gas to form a sealed compensation air chamber. In this embodiment, the signal adjusting mechanism 20 is provided with a signal adjusting part, and the signal adjusting part adjusts the action value of the alarm or locking signal contact; in particular, the signal adjusting member may be an adjusting bolt, and the alarm or blocking signal contact action value is adjusted by adjusting the distance of the adjusting bolt from the signal generator 19. The signal control mechanism in this embodiment is the same as the signal control mechanism in the first embodiment in terms of working principle, and further description is omitted.
As shown in fig. 6, the signal generator 19 may be disposed on the left side of the signal conditioning member 201; alternatively, the signal generator 19 may be disposed on the right side of the signal conditioner 201.
The utility model discloses a high anti vibration gas density relay of thin type compares with the present oil type of filling electric contact formula density relay that uses in a large number, has adopted signal control mechanism and indication display mechanism relatively independent on the one hand, signal control mechanism mainly includes at least one bellows, sealed compensation air chamber, at least one micro-gap switch. The corrugated pipe is perpendicular to the side wall of the shell. The indicating value display mechanism mainly comprises a bourdon tube, a base, an end seat, a machine core, a pointer and a dial. The utility model discloses a high anti vibration gas density relay has need not oil charge, the vibration resistance can be good again, the precision is high, electric property is good, the appearance is thin again, long service life's advantage. Through the innovative design and treatment, the performance of the device is greatly improved. It can be seen from table 1 that concrete process contrast test adopts the utility model discloses a density relay's precision, electrical property, appearance thickness, working life have better performance than prior art's density relay, improvement density relay's performance that can be by a wide margin, the reliable safe operation of guarantee electric wire netting. Especially, the appearance thickness becomes thin, the vibration resistance is improved, and the popularization is facilitated.
Table 1 the performance comparison table of the density relay of the art and the density relay of the prior art
The signal control mechanism comprises a control shell, a first sealing element, a second sealing element, a third sealing element, a plugging corrugated pipe and an outlet connecting seat; the outlet connecting seat is fixed on the control shell or a third sealing element, the third sealing element is arranged on the control shell and divides the control shell into a second sealing cavity and a signal adjusting cavity, the corrugated pipe is arranged in the second sealing cavity, one end of the corrugated pipe is welded on the first sealing element, the other end of the corrugated pipe is welded on the second sealing element, a first sealing cavity is arranged in the corrugated pipe, and compensation gas is filled in the first sealing cavity to form a sealed compensation gas chamber; one end of the plugging corrugated pipe is welded on the second sealing element, the other end of the plugging corrugated pipe is welded on the third sealing element, the control shell is respectively connected with the first sealing element and the third sealing element in a sealing way, the second sealing cavity is communicated with electrical equipment, and the second sealing cavity is communicated with the indicating value display mechanism on a gas path; the signal regulating mechanism and the signal generator are arranged in the signal regulating cavity; or the first sealed cavity is communicated with the electrical equipment and is communicated with the indicating value display mechanism on the gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber. Furthermore, the outlet connecting seat can also be fixed in the signal adjusting cavity.
The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete examples, and the explanation of the above examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present description should not be construed as a limitation of the present invention.
Claims (16)
1. A thin high vibration resistance gas density relay is characterized in that: the relay comprises a relay shell, a signal control mechanism and a value display mechanism, wherein the signal control mechanism and the value display mechanism are arranged in the relay shell and are relatively independent; the signal control mechanism is communicated with the indicating value display mechanism on a gas path;
the signal control mechanism comprises a corrugated pipe, a sealed cavity, a signal generator and a signal adjusting mechanism, and the corrugated pipe is transversely arranged and positioned in the sealed cavity; one end of the corrugated pipe is sealed, the other end of the corrugated pipe is communicated with electrical equipment, and compensation gas is arranged in the sealed cavity; or both ends of the corrugated pipe are sealed to form a sealing cavity, compensation gas is arranged in the sealing cavity of the corrugated pipe, and the sealing cavity is communicated with electrical equipment; the signal control mechanism monitors the gas density by utilizing the corrugated pipe and the sealed cavity, and when the gas density in the electrical equipment changes, the corrugated pipe compresses or expands to generate axial displacement so as to drive the signal adjusting mechanism to trigger the signal generator to generate a signal;
the indicating value display mechanism comprises a Bardon tube, a base, an end seat, a temperature compensation element, a machine core, a pointer and a dial, wherein one end of the base is directly or indirectly connected with the relay shell, the other end of the base is directly or indirectly connected with the dial, one end of the Bardon tube is fixed on the base, the other end of the Bardon tube and one end of the temperature compensation element are fixed on the end seat, the other end of the temperature compensation element is directly or sequentially connected with the machine core through a connecting arm and a connecting rod, and the pointer is installed on the machine core.
2. The thin, high vibration resistant gas density relay of claim 1, wherein: the head end of relay shell still is provided with transparent front glass, front glass with the calibrated scale is relative, front glass is fixed in through the table lid on the relay shell, the table lid with be provided with the sealing washer between the front glass.
3. The thin, high vibration resistant gas density relay of claim 1, wherein: the base passes through support piece with the shell bottom of relay housing is connected, the base pass through bolt or core with the calibrated scale is connected, be provided with the intercommunication in the base the air vent of bourdon tube.
4. The thin, high vibration resistant gas density relay of claim 1, wherein: the signal control mechanism also comprises a control shell, a first sealing element, a second sealing element, a third sealing element and a wire outlet connecting seat; one end of the corrugated pipe is welded on the first sealing element, and the other end of the corrugated pipe is welded on the second sealing element; a first sealing cavity is arranged in the corrugated pipe, and compensation gas is filled in the first sealing cavity to form a sealing compensation gas chamber; the outlet connecting seat is fixed on a third sealing element or a control shell in a sealing way, and the control shell is respectively connected with the first sealing element and the third sealing element in a sealing way; a second sealed cavity is arranged in the control shell outside the corrugated pipe, the second sealed cavity is communicated with electrical equipment, and the second sealed cavity is communicated with the indicating value display mechanism on a gas path; the signal adjusting mechanism and the signal generator are arranged in the second sealed cavity;
or the first sealed cavity is communicated with the electrical equipment and is communicated with the indicating value display mechanism on a gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber.
5. The thin, high vibration resistant gas density relay of claim 1, wherein: the signal control mechanism also comprises a control shell, a first sealing piece, a second sealing piece, a third sealing piece, a plugging corrugated pipe and an outlet connecting seat; the outlet connecting seat is fixed on the control shell, the third sealing element is arranged in the control shell and divides the interior of the control shell into a second sealing cavity and a signal adjusting cavity, the corrugated pipe is arranged in the second sealing cavity, one end of the corrugated pipe is welded on the first sealing element, the other end of the corrugated pipe is welded on the second sealing element, a first sealing cavity is arranged in the corrugated pipe, and compensation gas is filled in the first sealing cavity to form a sealed compensation gas chamber; one end of the plugging corrugated pipe is welded on the second sealing element, the other end of the plugging corrugated pipe is welded on the third sealing element, the control shell is respectively connected with the first sealing element and the third sealing element in a sealing way, the second sealing cavity is communicated with electrical equipment, and the second sealing cavity is communicated with the indicating value display mechanism on a gas path; the signal regulating mechanism and the signal generator are arranged in the signal regulating cavity;
or the first sealed cavity is communicated with the electrical equipment and is communicated with the indicating value display mechanism on the gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber.
6. The thin, high vibration resistant gas density relay according to any of claims 4 or 5, wherein: the signal adjusting mechanism is connected with the corrugated pipe through a trigger rod, and the trigger rod pulls or pushes the signal adjusting mechanism to trigger the signal generator to generate signals.
7. The thin, high vibration resistant gas density relay of claim 6, wherein: the trigger rod is provided with a guide piece.
8. The thin, high vibration resistant gas density relay according to any of claims 4 or 5, wherein: the signal control mechanism further comprises an air inlet communicated with the electrical equipment, and the air inlet and the outlet connecting seat are respectively arranged at two ends of the control shell.
9. The thin, high vibration resistant gas density relay according to any of claims 4 or 5, wherein: and the signal control mechanism is fixed at the bottom of the relay shell through a fixing piece.
10. The thin, high vibration resistant gas density relay according to any of claims 4 or 5, wherein: the signal control mechanism further comprises a limiting mechanism, and the limiting mechanism is arranged on the control shell, is opposite to the signal adjusting mechanism and is used for limiting the signal adjusting mechanism.
11. The thin, high vibration resistant gas density relay of claim 8, wherein: the relay comprises a relay shell, and is characterized by further comprising a connecting joint, a first connecting pipe and a second connecting pipe, wherein the connecting joint is connected with electrical equipment and fixed on the relay shell, one end of the first connecting pipe is connected with the electrical equipment through the connecting joint, the other end of the first connecting pipe is connected to the base and communicated with an air hole in the base, one end of the second connecting pipe is connected to the base and communicated with the air hole in the base, and the other end of the second connecting pipe is communicated with the signal control mechanism through the air inlet;
or one end of the first connecting pipe and one end of the second connecting pipe are respectively connected with the electrical equipment through the connecting joint, the other end of the first connecting pipe is connected to the base and communicated with the vent hole in the base, and the other end of the second connecting pipe is communicated with the signal control mechanism through the air inlet;
or one end of the first connecting pipe is connected with the electrical equipment through the connecting joint, the other end of the first connecting pipe is communicated with the signal control mechanism through the air inlet, one end of the second connecting pipe is communicated with the signal control mechanism through the air inlet, and the other end of the second connecting pipe is connected to the base and is communicated with the air vent in the base.
12. The thin, high vibration resistant gas density relay of claim 11, wherein: the outer side of the bottom of the relay shell is also provided with a chassis, the connecting joint is fixed on the chassis, and the chassis is fixedly connected with the relay shell through at least one shock absorber.
13. The thin, high vibration resistant gas density relay of claim 1, wherein: the relay shell is a sealed air chamber, and gas or shockproof oil is filled in the relay shell.
14. The thin, high vibration resistant gas density relay of claim 1, wherein: and the heat insulation layer is wrapped outside the signal control mechanism or the relay shell.
15. The thin, high vibration resistant gas density relay of claim 1, wherein: the gas density relay also comprises an electronic signal remote transmission unit, wherein the electronic signal remote transmission unit comprises a pressure sensor, a temperature sensor, a microprocessor and a communication module; the microprocessor is respectively connected with the pressure sensor, the temperature sensor and the communication module; the microprocessor collects pressure and temperature signals through the pressure sensor and the temperature sensor, corresponding density values are obtained through processing of the microprocessor according to gas pressure-temperature characteristics, and data obtained by the microprocessor are remotely transmitted through the communication module, so that the gas density of the electrical equipment is monitored on line.
16. The thin, high vibration resistant gas density relay of claim 1, wherein: the temperature compensation element is a bimetallic strip, or a Bardon tube sealed with compensation gas, or a micro corrugated tube sealed with compensation gas.
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| CN202020289838.8U CN211604957U (en) | 2020-03-11 | 2020-03-11 | Thin high vibration resistance gas density relay |
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| CN202020289838.8U CN211604957U (en) | 2020-03-11 | 2020-03-11 | Thin high vibration resistance gas density relay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243881A (en) * | 2020-03-11 | 2020-06-05 | 上海乐研电气有限公司 | A thin high-vibration gas density relay |
| CN111243881B (en) * | 2020-03-11 | 2025-04-08 | 上海乐研电气有限公司 | A thin, highly vibration-resistant gas density relay |
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2020
- 2020-03-11 CN CN202020289838.8U patent/CN211604957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243881A (en) * | 2020-03-11 | 2020-06-05 | 上海乐研电气有限公司 | A thin high-vibration gas density relay |
| CN111243881B (en) * | 2020-03-11 | 2025-04-08 | 上海乐研电气有限公司 | A thin, highly vibration-resistant gas density relay |
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