CN211320005U - High-vibration-resistance gas density relay - Google Patents
High-vibration-resistance gas density relay Download PDFInfo
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- CN211320005U CN211320005U CN202020289692.7U CN202020289692U CN211320005U CN 211320005 U CN211320005 U CN 211320005U CN 202020289692 U CN202020289692 U CN 202020289692U CN 211320005 U CN211320005 U CN 211320005U
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Abstract
The utility model discloses a high vibration resistance gas density relay, which comprises a shell, a signal control mechanism arranged in the shell and a indicating value display mechanism relatively independent of the signal control mechanism; the signal control mechanism mainly comprises at least one corrugated pipe, a sealed compensation air chamber, a signal generator and a signal adjusting mechanism. The corrugated pipe is perpendicular to the side wall of the shell. The shell comprises a relatively independent sealed cabin for installing the indicating value display mechanism; the sealed cabin is filled with anti-vibration oil, or the sealed cavity is internally sealed with gas. The indicating value display part mainly comprises a bourdon tube, a base, an end seat, a movement, a pointer and a dial. The utility model discloses a high anti vibration gas density relay has can not the oil leak, the shock resistance can be good, the precision is high, electrical 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.
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. Specifically, the oil-filled density relay can work for a long time without oil leakage, so that the safety and reliability of a power grid are ensured; or the shell of the density relay is fully sealed in a long working period, and the density relay is an absolute pressure type density relay and cannot be influenced by the altitude.
Disclosure of Invention
The utility model aims at providing a high anti vibration gas density relay 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, can the oil charge or gas filled advantage.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a high anti-vibration gas density relay, which comprises a relay shell, a signal control mechanism and a indicating value display mechanism, wherein a sealed cabin is arranged in the relay shell, the indicating value display mechanism is arranged in the sealed cabin, and the sealed cabin is filled with anti-vibration oil or sealed with gas; the signal control mechanism is arranged in the relay shell and is positioned outside the sealed cabin; 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 arranged 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 bourdon tube, a base, an end seat, a temperature compensation element, a machine core, a pointer and a dial scale, wherein one end of the bourdon tube is welded on the base, the other end of the bourdon 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, the pointer is installed on the machine core, and the dial scale is installed in the sealed cabin.
Preferably, the sealed cabin comprises meter glass, a display chassis and a first sealing ring, the meter glass is of a cylindrical structure with an opening at one end, the display chassis is installed at the opening end of the meter glass, the first sealing ring is arranged between the meter glass and the display chassis to realize sealing, and the inner cavity of the meter glass is sealed by the display chassis to form the sealed cabin for placing the indication value display mechanism.
Preferably, the watch glass and the display chassis are fixedly connected through a fastener.
Preferably, a base mounting hole is further formed in the display chassis, the bottom end of the base is mounted on the base through the base mounting hole, a second sealing ring is arranged between the base mounting hole and the base, one end, penetrating out of the base mounting hole, of the base is fastened on the display chassis through a nut, one end, penetrating out of the base mounting hole, of the base is communicated with the indication value display mechanism on a gas path, and a through hole communicated with the sealing cabin is formed in the base.
Preferably, an oil-filled air sealing port communicated with the cavity in the sealed cabin is further arranged on the display chassis, an air sealing screw is arranged on the oil-filled air sealing port, and an air sealing ring is arranged between the air sealing screw and the oil-filled air sealing port.
Preferably, the head end of the relay shell is further provided with a transparent front layer of glass, a third sealing ring is arranged between the front layer of glass and the front wall of the meter glass, and the front layer of glass is fixed on the relay shell through a meter cover.
Preferably, the periphery of the front wall of the watch glass is provided with a fixing flange, the watch cover is connected with the watch glass through the fixing flange, and a sealing ring is arranged between the side wall of the watch glass and the watch cover.
Preferably, the cover is arranged outside the front glass and the watch glass, the height of the side wall of the cover is higher than that of the side wall of the watch glass, and a sealing gasket is arranged between the top opening end of the relay casing and the display chassis.
Preferably, a support member is disposed between the display chassis and the bottom of the relay housing.
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 part 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 part 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 part 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 in communication with the electrical device.
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 communicated with the sealed cabin through a base, one end of the second connecting pipe is communicated with the sealed cabin through 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 communicated with the sealed cabin through 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 communicated with the sealed cabin through the base.
Preferably, the bottom of the outer part of the relay shell is further provided with a chassis, the connecting joint is fixed on the chassis, and the chassis is connected with the relay shell through a plurality of shock absorbers or shock absorbing pads.
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:
compared with the oil-filled microswitch anti-vibration type gas density relay in the prior art and the oil-filled electric contact type density relay which is used in large quantity at present, the high anti-vibration gas density relay adopts the relatively independent design of a signal control part and a display part on the one hand, wherein the signal control part comprises at least one corrugated pipe, a sealed compensation air chamber, at least one signal generator and a signal adjusting mechanism; and monitoring the gas density through the corrugated pipe and the sealing compensation gas chamber, and monitoring the gas density by combining a signal generator. The signal control part adopts the corrugated pipe and the sealed compensation air chamber to monitor the gas density, and the corrugated pipe has small appearance and good vibration resistance and does not need to be filled with oil. The shell comprises a relatively independent sealed chamber for mounting the indicating value display part; the sealed cavity is filled with anti-vibration oil, or the sealed cavity is internally sealed with gas. The display portion can achieve high vibration resistance of the display portion using vibration-proof oil; or the display part utilizes the good sealing performance of the sealing chamber to realize that the density relay is an absolute pressure type density relay and cannot be influenced by the altitude. Because the sealing chamber of the display part has good sealing technology, the oil chamber or the air chamber of the display part can absolutely not have the problem of oil leakage or air leakage, and can work for a long time. Because the indicating value display part is independent, the density relay within the full range (-0.1-0.9 MPa) can be very easily realized, particularly, the display with the initial value of-0.1 MPa can be very easily realized, the vacuum degree can be displayed during the vacuum pumping, and the popularization and the application are very easy. In addition, a temperature compensation element is adopted to realize the temperature compensation function of the indicating value display part, so that the precision is further improved and ensured. In a word, the utility model discloses a high anti vibration gas density relay's casing has can not the oil leak or leak gas, and the vibration resistance can be good again, the precision is high, electric property is good, long service life, overall dimension are thin again, can oil charge or gas filled 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 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 high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 3 is a schematic front structural view of an indication display mechanism of a high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 4 is a schematic side view of an indication display mechanism of a 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 mechanism of a high vibration resistance gas density relay according to a first embodiment of the present invention;
fig. 6 is a schematic side view of a high vibration resistance gas density relay according to a second embodiment of the present invention;
fig. 7 is a schematic structural view of a side surface of a display portion of a high vibration resistance gas density relay according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a signal control mechanism of a 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-fastening piece, 26-front layer glass, 27-connecting joint, 28-air inlet, 29-limiting mechanism, 25-temperature compensation element, 30-a first connecting pipe, 31-a second connecting pipe, 32-a third sealing element, 33-a guiding element, 34-a blocking corrugated pipe, 35-a sealed cabin, 36-a display chassis, 37-a first sealing ring, 38-a first sealing groove, 39-a second sealing ring, 40-a third sealing groove, 41-a third sealing ring, 42-a nut, 43-an oil-filled sealing port, 44-an air-sealed screw, 45-an air-sealed sealing ring and 46-a fixed flange.
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 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 first embodiment is as follows:
the high vibration-proof gas density relay in the embodiment, as shown in fig. 1-5, comprises a relay casing 9, a signal control mechanism and a value display mechanism, wherein a sealed cabin 35 is arranged in the relay casing 9, the value display mechanism is arranged in the sealed cabin 35, and the sealed cabin 35 is filled with vibration-proof oil or sealed with gas; the signal control mechanism is arranged in the relay shell 9 and is positioned outside the sealed cabin 35; the signal control mechanism is communicated with the indication value display mechanism on the 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 indication value display mechanism comprises a bourdon 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 bourdon tube 3 is welded on the base 5, the other end of the bourdon tube 3 and one end of the temperature compensation element 4 are both fixed on the end seat 14, the other end of the temperature compensation element 4 is directly or sequentially connected with the machine core 6 through a connecting arm 13 and a connecting rod 7, the pointer 2 is installed on the machine core 6, and the dial 1 is installed in a sealed cabin 35.
Specifically, in this embodiment, the sealed cabin 35 includes a watch glass 11, a display chassis 36 and a first sealing ring 37, the watch glass 11 is a cylindrical structure with an open end, and the display chassis 36 is mounted on the open end of the watch glass 11 and is fixedly connected with the display chassis 36 through a fastening member 25. The periphery of the display chassis 36 is provided with a first sealing groove 38, a first sealing ring 37 is arranged in the first sealing groove 38 and is positioned between the watch glass 11 and the display chassis 36 to realize sealing, and the inner cavity of the watch glass 11 is blocked by the display chassis 36 to form a sealed cabin for placing the indicating value display mechanism.
The display chassis 36 is further provided with a base mounting hole, the bottom end of the base 5 is mounted on the display chassis 36 through the base mounting hole, a second sealing ring 39 is arranged between the base mounting hole and the base 5, the end, penetrating out of the base mounting hole, of the base 5 is fastened on the display chassis 36 through a fastener, such as a nut 42, the end, penetrating out of the base mounting hole, of the base 5 is communicated with the indication value display mechanism on an air path, and an air vent communicated with the badon tube 3 is arranged in the base 5. An oil-filled air sealing port 43 communicated with the inner cavity of the sealed cabin 35 is further arranged on the display chassis 36, an air sealing screw 44 is arranged on the oil-filled air sealing port 43, and an air sealing ring 45 is arranged between the air sealing screw 44 and the oil-filled air sealing port 43; the main functions of the air seal screw 44 and the air seal ring 45 are to seal the oil-filled air seal port 43 after the sealed cabin 35 is filled with anti-vibration oil, so as to prevent the anti-vibration oil from overflowing during transportation; or, after the sealed cabin 35 is installed, the oil filling port (or the air sealing port) is sealed to form an absolute pressure density relay, so that the display part of the density relay is not influenced by the altitude and the atmospheric pressure.
In this embodiment, the head end of the relay housing 9 is further provided with a transparent front layer of glass 26, the front layer of glass 26 and the surface glass 11 are both transparent glasses, a third sealing groove 40 is formed in the end face of the surface glass 11, a third sealing ring 41 is arranged in the third sealing groove 40, the third sealing ring 41 is located between the front layer of glass 26 and the surface glass 11 to realize sealing, and the front layer of glass 26 is fixed on the relay housing 9 through the cover 10. In the present embodiment, a fixing flange 46 is provided on the outer periphery of the front wall of the watch glass 11, the watch case 10 is connected to the watch glass 11 via the fixing flange 46, and a seal ring 12 is provided between the side wall of the watch glass 11 and the watch case 10.
In this embodiment, the operation principle of the indication display mechanism is as follows: the bourdon tube 3 in the indication display part is an elastic element, and changes in the density of the reaction gas are corrected by the temperature compensation element 4 for the changed pressure and temperature. 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 part 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 part 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.
In this embodiment, the signal control mechanism further includes an air inlet 28 communicated with the electrical device, and the air inlet 28 and the outlet connecting seat 24 are respectively disposed at two ends of the control housing 9.
In order to realize that the first sealed cavity 22 or the second sealed cavity 21 is communicated with the indicating value display part on the air path, the present embodiment 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 housing 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 air 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 (not shown) is further disposed at the bottom of the outer portion of the relay housing 9, the connection connector 27 is fixed on the chassis, and the chassis and the relay housing 9 are connected through a plurality of vibration dampers or shock absorbing pads.
In this embodiment, the insulating layer is wrapped outside the signal control mechanism or outside the relay housing 9. The movement 6 is provided with a damping mechanism having a damping function, and the damping mechanism includes, but is not limited to, one or more of an inertia wheel, the inertia wheel + damping grease, and a damper + damping grease.
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, data obtained by the microprocessor are transmitted remotely through the communication module, and therefore gas density of the electrical equipment is monitored on line.
The gas density relay also comprises an online checking unit, wherein the online checking unit comprises a gas density detection sensor, a pressure adjusting mechanism, a valve, an online checking contact signal sampling unit and an intelligent control unit; the gas circuit of the pressure regulating mechanism is communicated with the signal control mechanism; the pressure regulating mechanism is configured to regulate the pressure rise and fall of the signal control mechanism so as to enable the signal control mechanism to generate contact signal action; the gas density detection sensor is communicated with the signal control mechanism on the gas path; the online check contact signal sampling unit is connected with the signal control mechanism and is configured to sample a contact signal of the signal control mechanism; one end of the valve is provided with an interface communicated with the electrical equipment, and the other end of the valve is communicated with the signal control mechanism, or the other end of the valve is connected with the gas circuit of the pressure regulating mechanism, so that the valve is communicated with the signal control mechanism; the intelligent control unit is respectively connected with the gas density detection sensor, the pressure adjusting mechanism, the valve and the online check joint signal sampling unit, and is configured to control the closing or opening of the valve, complete the control of the pressure adjusting mechanism, the pressure value acquisition, the temperature value acquisition and/or the gas density value acquisition, and detect a joint signal action value and/or a joint signal return value of the signal control mechanism; or the online checking unit comprises a gas density detection sensor, a temperature adjusting mechanism, an online checking contact signal sampling unit and an intelligent control unit; the temperature adjusting mechanism is a temperature-adjustable adjusting mechanism and is configured to adjust the temperature rise and fall of a sealed compensation air chamber of the signal control mechanism so as to enable the signal control mechanism to generate contact point signal action; the gas density detection sensor is communicated with the signal control mechanism on the gas path; the online check contact signal sampling unit is directly or indirectly connected with the signal control mechanism and is configured to sample a contact signal generated when a contact of the signal control mechanism acts; the intelligent control unit is respectively connected with the gas density detection sensor, the temperature adjusting mechanism and the online check contact signal sampling unit, is configured to complete the control of the temperature adjusting mechanism, collects pressure values and temperature values and/or collects gas density values, and detects contact signal action values and/or contact signal return values of the gas density relay body.
The temperature compensation element 4 is a bimetal, or a bawden tube 3 sealed with compensation gas, or a micro bellows 17 sealed with compensation gas. I.e. the temperature compensation element 4 comprises, but is not limited to, one of a bimetallic strip, a bourdon tube sealed with a compensation gas, a micro bellows sealed with a compensation gas.
The high vibration resistance gas density relay in this embodiment further includes: a micro-water sensor respectively connected with the signal control mechanism or the display part, and/or a decomposition product sensor respectively connected with the signal control mechanism or the display part, and/or a gas purity sensor respectively connected with the signal control mechanism or the display part.
The gas density relay further comprises a heating device, wherein the heating device comprises but is not limited to one of a silicon rubber heater, a resistance wire, an electric heating tape, an electric heating rod, a hot air blower, an infrared heating device and a semiconductor. The heating device is combined with the pressure sensor, the temperature sensor and the intelligent control unit, and can be used for detecting the gas density relay; or the heating device can make the contact of the gas density relay act, and the gas density relay can be checked by combining the display part unit or the pressure sensor, the temperature sensor and the intelligent control unit.
Example two:
the difference between this embodiment and the first embodiment is: as shown in fig. 6 to 7, the cover 10 is a high cover 10, that is, the height of the cover 10 in the present embodiment is much higher than the height of the cover 10 in the first embodiment by at least 20 mm; the cover 10 covers the front glass 26 and the outside of the cover glass 11, the height of the side wall of the cover 10 is higher than that of the side wall of the cover glass 11, and a gasket is arranged between the top opening end of the relay case 9 and the display chassis 36. In this embodiment, the fixing member 23 is made of angle steel, the control housing 16 of the signal control mechanism is welded to the fixing member 23, and then the fixing member 23 is fixed to the bottom of the housing by a plurality of screws.
Example three:
the difference between this embodiment and the first embodiment is: as shown in fig. 8, 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 in a sealing mode, 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 compensation gas is filled in the first sealing cavity 22 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 mode, the second sealing cavity 21 is communicated with electrical equipment, and the second sealing cavity 21 is communicated with the indicating value display part on an air 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 part 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. 8, the signal generator 19 may be disposed on the left side of the signal conditioner 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 compares with present a large amount of oil type of filling electric contact formula density relay that use at present, has adopted signal control part and indication value display part relatively independent on the one hand, and signal control part mainly includes at least one bellows 17, sealed compensation air chamber, at least one micro-gap switch. The bellows 17 is perpendicular to the housing side wall. The indicating value display part mainly comprises a bourdon tube 3, a base 5, a sitting seat, a movement 6, a pointer 2 and a dial 1. 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.
Table 1 the performance comparison table of the density relay of the art and the density relay of the prior art
The utility model discloses a density relay of technique, the open end of table glass is flange-shaped, be equipped with at least one first recess between the open end of table glass flange-shaped and the display chassis, set up at least one first sealing washer in the first recess, first recess set up in the open end of table glass flange-shaped or on the display chassis; the base is hermetically fixed on the display chassis.
The density relay of the technology of the utility model also comprises a front layer of glass and a meter cover; the front wall of the watch glass is made of transparent material and is provided with a third groove, and a third sealing ring is arranged in the third groove; the front layer of glass and the front wall of the surface glass are in contact with the third sealing ring; the front layer glass is fixed on the shell through the meter cover and the meter glass. Or the sealing chamber comprises surface glass, a middle piece, a display chassis and a sealing ring; the display chassis is provided with a display base plate, the middle piece is a cylinder, at least one first groove is arranged between the middle piece and the display base plate, and at least one first sealing ring is arranged in the first groove; at least one fourth groove is formed between the intermediate piece and the watch glass, and at least one fourth sealing ring is arranged in the fourth groove; the base is hermetically fixed on the display chassis.
The utility model discloses the density relay of technique, the bellows with the lateral wall of casing is perpendicular, perhaps the bellows with the lateral wall of casing is close perpendicularly, and its contained angle is not more than 45 degrees. The signal control section further includes: the control device 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; the inner wall of the corrugated pipe, the first sealing element and the second sealing element jointly define a first sealing cavity; the first sealed cavity is filled with compensation gas to form a sealed 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; the outer wall of the corrugated pipe, the first sealing piece, the second sealing piece, the third sealing piece, the outgoing line connecting seat and the control shell define a second sealing cavity together, and the second sealing cavity is communicated with the indicating value display part 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 indicating value display part on the gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber. In addition, the signal control section may further include: a control housing, a first seal, a second seal, a third seal; the bellows comprises a first bellows and a second bellows; one end of the first corrugated pipe is welded on the first sealing element, and the other end of the first corrugated pipe is welded on the second sealing element; the inner wall of the first bellows, the first seal and the second seal together define a first sealed cavity; the first sealed cavity is filled with compensation gas to form a sealed compensation gas chamber; one end of the second corrugated pipe is welded on the second sealing element, the other end of the second corrugated pipe is welded on the third sealing element, and the control shell is respectively connected with the first sealing element and the third sealing element in a sealing manner; the first sealing element, the outer wall of the first corrugated pipe, the second sealing element, the outer wall of the second corrugated pipe, the third sealing element and the inner wall of the control shell jointly define a second sealing cavity, and the second sealing cavity is communicated with the indicating value display part on a gas path; the signal adjusting mechanism is connected with the second sealing piece, and the signal generator is arranged corresponding to the signal adjusting mechanism; or the first sealed cavity is communicated with the indicating value display part on the gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber. And, the high vibration resistant gas density relay, the signal control section further comprising: the limiting mechanism is arranged opposite to the signal adjusting mechanism and can prevent the signal adjusting mechanism from vibrating repeatedly, and the vibration resistance of the density relay is improved.
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 (21)
1. A high vibration resistance gas density relay is characterized in that: the device comprises a relay shell, a signal control mechanism and a value indicating display mechanism, wherein a sealed cabin is arranged in the relay shell, the value indicating display mechanism is arranged in the sealed cabin, and the sealed cabin is filled with anti-vibration oil or sealed with gas; the signal control mechanism is arranged in the relay shell and is positioned outside the sealed cabin; 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 arranged 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 bourdon tube, a base, an end seat, a temperature compensation element, a machine core, a pointer and a dial scale, wherein one end of the bourdon tube is fixed on the base, the other end of the bourdon 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, the pointer is installed on the machine core, and the dial scale is installed in the sealed cabin.
2. The high vibration resistant gas density relay of claim 1, wherein: the sealed cabin comprises meter glass, a display chassis and a first sealing ring, wherein the meter glass is of a cylindrical structure with an opening at one end, the display chassis is arranged at the opening end of the meter glass, the first sealing ring is arranged between the meter glass and the display chassis to realize sealing, and an inner cavity of the meter glass is sealed by the display chassis to form the sealed cabin for placing the indicating value display mechanism.
3. The high vibration resistant gas density relay of claim 2, wherein: the watch glass is fixedly connected with the display chassis through a fastener.
4. The high vibration resistant gas density relay of claim 2, wherein: the display base plate is further provided with a base mounting hole, the bottom end of the base is mounted on the display base plate through the base mounting hole, a second sealing ring is arranged between the base mounting hole and the base, one end, penetrating out of the base mounting hole, of the base is fastened on the display base plate through a nut, one end, penetrating out of the base mounting hole, of the base is communicated with the indication value display mechanism on a gas circuit, and a vent hole communicated with the Barton pipe is formed in the base.
5. The high vibration resistant gas density relay of claim 2, wherein: the display chassis is further provided with an oil-filled air sealing port communicated with the cavity in the sealed cabin, an air sealing screw is arranged on the oil-filled air sealing port, and an air sealing ring is arranged between the air sealing screw and the oil-filled air sealing port.
6. The high vibration resistant gas density relay of claim 2, wherein: the head end of the relay shell is further provided with a transparent front layer of glass, a third sealing ring is arranged between the front layer of glass and the front wall of the meter glass, and the front layer of glass is fixed on the relay shell through a meter cover.
7. The high vibration resistant gas density relay of claim 6, wherein: the periphery of table glass's antetheca is provided with mounting flange, the table lid passes through mounting flange with table glass connects, table glass's lateral wall with be provided with the sealing washer between the table lid.
8. The high vibration resistant gas density relay of claim 6, wherein: the table lid is located front glass the outside of table glass, the height of the lateral wall of table lid is higher than the height of the lateral wall of table glass, relay case's open-top end with be provided with sealed the pad between the display chassis.
9. The high vibration resistant gas density relay of claim 2, wherein: and a supporting piece is arranged between the display chassis and the shell bottom of the relay shell.
10. The 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 part 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 part on a gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber.
11. The 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 part on the gas path, and the second sealed cavity is filled with compensation gas to form a sealed compensation gas chamber.
12. The high vibration resistant gas density relay according to any one of claims 10 or 11, 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.
13. The high vibration resistant gas density relay of claim 12, wherein: the trigger rod is provided with a guide piece.
14. The high vibration resistant gas density relay according to any one of claims 10 or 11, wherein: the signal control mechanism also includes an air inlet in communication with the electrical device.
15. The high vibration resistant gas density relay according to any one of claims 10 or 11, wherein: and the signal control mechanism is fixed at the bottom of the relay shell through a fixing piece.
16. The high vibration resistant gas density relay according to any one of claims 10 or 11, 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.
17. The high vibration resistant gas density relay of claim 14, 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.
18. The high vibration resistant gas density relay of claim 17, wherein: the relay comprises a relay shell and is characterized in that a chassis is further arranged at the bottom of the outer portion of the relay shell, the connecting joint is fixed on the chassis, and the chassis is connected with the relay shell through a plurality of shock absorbers or shock absorbing pads.
19. The 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.
20. The 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.
21. The 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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| CN202020289692.7U CN211320005U (en) | 2020-03-11 | 2020-03-11 | High-vibration-resistance gas density relay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192791A (en) * | 2020-03-11 | 2020-05-22 | 上海乐研电气有限公司 | High-vibration-resistance gas density relay |
| CN111243881A (en) * | 2020-03-11 | 2020-06-05 | 上海乐研电气有限公司 | Thin high vibration resistance gas density relay |
-
2020
- 2020-03-11 CN CN202020289692.7U patent/CN211320005U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192791A (en) * | 2020-03-11 | 2020-05-22 | 上海乐研电气有限公司 | High-vibration-resistance gas density relay |
| CN111243881A (en) * | 2020-03-11 | 2020-06-05 | 上海乐研电气有限公司 | Thin high vibration resistance gas density relay |
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