CN111043433B - Pressure compensation device - Google Patents
Pressure compensation device Download PDFInfo
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- CN111043433B CN111043433B CN201911314844.2A CN201911314844A CN111043433B CN 111043433 B CN111043433 B CN 111043433B CN 201911314844 A CN201911314844 A CN 201911314844A CN 111043433 B CN111043433 B CN 111043433B
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- pressure
- top cover
- cover
- compensation device
- push rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
- H01B17/40—Cementless fittings
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a pressure compensation device, comprising a corrugated pipe and a pressure release assembly, wherein: the upper end and the lower end of the corrugated pipe are respectively connected with a top cover and a bottom cover in a sealing way, and the top cover is provided with an inflation and deflation mechanism; the pressure release assembly is arranged in the corrugated pipe and comprises a support and a push rod which is connected to the support and can move up and down relative to the support, the upper end of the support is connected with the top cover, and the upper end of the push rod is connected with an upper knife tip which can puncture the top cover. According to the pressure compensation device, the inflation and deflation mechanism is arranged, so that the sealing performance of the corrugated pipe can be ensured, and the internal pressure of the corrugated pipe can be adjusted according to the actual environment temperature, so that the internal pressure of the sleeve is in a proper range; through the pressure release subassembly, can in time release product internal pressure under extreme condition, avoid the product explosion.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a pressure compensation device.
Background
In power equipment, especially in high-voltage and ultrahigh-voltage equipment, due to insulation requirements, a large number of bushings are used as external insulation, such as voltage transformers, current transformers, outgoing line bushings and the like, in which insulating oil or insulating gas is filled in the bushings. The inside liquid or gas that is full of above-mentioned sleeve pipe class product, when ambient temperature changes, the pressure of the inside of sleeve pipe also can corresponding change, in order to eliminate inside pressure variation, generally adopt the expander as the adjusting device of internal pressure, when ambient temperature rose, internal pressure increased, and the expander shrink was in order to offset inside pressure this moment, and the pressure that makes in the sleeve pipe keeps internal pressure in suitable scope when external temperature changes.
However, when the casing products are subjected to overvoltage impact such as operation or lightning, the electric field intensity inside the casing equipment is too high, so that insulation damage is caused, if the insulation damage is accumulated continuously, the generated gas quantity is increased, the internal pressure is increased, at the moment, the adjustment quantity of the expander cannot adjust the change of the internal pressure, so that the internal pressure of the products is higher than the normal use condition, the products have serious potential safety hazards, and in an extreme case, the casing products are likely to explode.
Disclosure of Invention
The invention aims to provide a pressure compensation device which can control the internal pressure of a product according to the ambient temperature and can quickly release the internal pressure in extreme cases.
To achieve the above object, the present invention provides a pressure compensation device, comprising:
the upper end and the lower end of the corrugated pipe are respectively connected with a top cover and a bottom cover in a sealing manner, and the top cover is provided with an inflation and deflation mechanism;
the pressure release assembly is arranged in the corrugated pipe and comprises a support and a push rod which is connected to the support and can move up and down relative to the support, the upper end of the support is connected with the top cover, and the upper end of the push rod is connected with an upper knife tip which can puncture the top cover.
The pressure compensation device comprises a top cover, a support, a push rod and a connecting plate, wherein the support comprises at least two supporting rods which are arranged along the circumferential direction of the top cover at equal intervals, the upper ends of the supporting rods are connected with the top cover, annular bosses which protrude outwards are arranged at the lower parts of the supporting rods, the supporting rods are sleeved with the connecting plate, the connecting plate can reciprocate between the top cover and the annular bosses, and each connecting plate is connected with the push rod and can move synchronously along with the push rod.
The pressure compensation device comprises a top cover, a supporting rod, a connecting plate and a top cover, wherein the supporting rod is sleeved with the supporting spring, the upper end of the supporting spring is connected with the top cover, and the connecting plate can reciprocate between the supporting spring and the annular boss.
The pressure compensation device comprises a push rod, a connecting plate and a connecting plate, wherein the push rod is sleeved with a fixing sleeve, and the connecting plate is connected with the fixing sleeve.
The pressure compensation device comprises a push rod, a fixed sleeve and a pressure cap, wherein the lower end of the push rod is provided with the pressure cap, the push rod is sleeved with a limiting spring, and two ends of the limiting spring are respectively abutted against the fixed sleeve and the pressure cap.
The pressure compensation device comprises a bottom cover, a supporting rod and a pushing rod, wherein the bottom cover is provided with a bottom hole, the pushing rod is connected with the bottom cover, the bottom cover is provided with a bottom hole, the bottom hole is provided with a bottom edge, the pushing rod is connected with the bottom edge, the bottom edge is provided with a bottom edge, the pushing rod is provided with a supporting rod, the bottom edge is provided with a bottom edge, the pushing rod is provided with a bottom edge, the bottom cover is provided with a bottom cover, the pushing rod is connected with a bottom cover, and the bottom cover, the bottom cover is connected with a bottom cover, the bottom cover is connected with the bottom cover, the bottom cover is connected with the bottom cover, the bottom cover is connected with the bottom cover, the bottom cover is connected.
The pressure compensation device comprises a pushing rod, a bottom cover, a pushing rod and a sliding sleeve, wherein the pushing rod is connected with a lower knife tip capable of puncturing the bottom cover, the sliding sleeve is sleeved outside the lower knife tip, and the upper end of the sliding sleeve can move up and down and is connected with the pushing rod.
The pressure compensation device comprises a support, wherein the support is in a hollow cylinder shape with two open ends, a lower tool nose is arranged at the lower end of the support, the support is sleeved outside a push rod, the lower end of the push rod extends out of the support, a pressing cap is connected to the lower end of the push rod, and a through hole for the lower tool nose to penetrate through is formed in the pressing cap.
The pressure compensation device comprises a top cover, wherein a pressure release sheet is arranged on the top cover at a position corresponding to the upper tool nose, and a cross-shaped pressure groove is formed in the pressure release sheet.
The pressure compensation device comprises a pressure warning component, wherein the pressure warning component is connected to the top cover and can send a warning signal when the internal pressure of the corrugated pipe is not equal to the preset pressure.
The pressure compensating apparatus as described above, wherein the pressure warning assembly comprises:
the shielding cover is connected to the top cover, and a plurality of LED lamps are arranged on the shielding cover along the circumferential direction;
a pressure sensor connected to the top cover, the pressure sensor being capable of detecting an internal pressure of the bellows;
the controller is electrically connected with the LED lamp and the pressure sensor, receives a pressure detection signal of the pressure sensor and controls the LED lamp to send out a warning signal when the pressure detection signal is not equal to the preset pressure.
The pressure compensation device comprises a pressure warning component, a shielding cover, a controller and a pressure detection signal, wherein the pressure warning component further comprises a buzzer, the buzzer is arranged in the shielding cover and electrically connected with the controller, and the controller can control the buzzer to send out a warning signal when the pressure detection signal is not equal to the preset pressure.
The pressure compensating apparatus as described above, wherein the pressure warning assembly comprises:
the shielding cover is connected to the top cover, and a plurality of LED lamps are arranged on the shielding cover along the circumferential direction;
the spliced pole, it set up in the bellows, the upper end of spliced pole with the top cap meets, be connected with at least one travel switch on the spliced pole, the removal of catch bar can trigger travel switch, travel switch can be when being triggered control the LED lamp sends warning signal.
The pressure compensating apparatus as described above, wherein the pressure warning assembly comprises:
the shielding cover is connected to the top cover, and a plurality of LED lamps are arranged on the shielding cover along the circumferential direction;
the connecting column is arranged in the corrugated pipe, the upper end of the connecting column is connected with the top cover, at least one travel switch is connected onto the connecting column, and the travel switch can be triggered by the movement of the push rod;
the controller is electrically connected with the LED lamp and the travel switch, and the controller controls the LED lamp to send out a warning signal when the travel switch is triggered.
The pressure compensation device comprises a pressure warning component, a shielding cover and a controller, wherein the pressure warning component further comprises a buzzer, the buzzer is arranged in the shielding cover and electrically connected with the controller, and the controller controls the buzzer warning signal when the travel switch is triggered.
Compared with the prior art, the invention has the following advantages:
according to the pressure compensation device, the inflation and deflation mechanism is arranged on the top cover, so that the sealing performance of the corrugated pipe can be ensured, and the internal pressure of the corrugated pipe can be adjusted according to the actual environment temperature, so that the internal pressure of the sleeve is in a proper range;
according to the pressure compensation device, the pressure release assembly is arranged in the corrugated pipe, so that the internal pressure of a product can be released in time under extreme conditions, and the product explosion is avoided;
according to the pressure compensation device, the pressure warning component is arranged, so that patrols can find the abnormal condition of the pressure in the sleeve in time conveniently, and can know the running state of a product through different light displays;
according to the pressure compensation device, when the internal pressure of the sleeve is in a reasonable range, the pressure warning assembly is in a power-off state, so that the energy consumption is effectively reduced, and the pressure warning assembly can work for a long time;
the pressure compensation device is low in cost and convenient to use, and the modules are arranged independently, so that the pressure compensation device can be freely combined according to actual use requirements.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a schematic perspective view of a first embodiment of the pressure compensation device of the present invention;
FIG. 2 is a first schematic perspective cross-sectional view of the pressure compensating device of FIG. 1;
FIG. 3 is a second cross-sectional view of the pressure compensating device of FIG. 1;
FIG. 4 is a schematic perspective view of a second embodiment of the pressure compensating device of the present invention;
FIG. 5 is a schematic perspective, partially cross-sectional view of the pressure compensating device of FIG. 4;
fig. 6 is a schematic perspective cross-sectional view of a second pressure compensating device shown in fig. 4.
The reference numbers illustrate:
1. a bellows;
11. a top cover; 111. an inflation and deflation mechanism; 112. a pressure release sheet;
12. a bottom cover;
2. a pressure relief assembly;
21. a support; 211. a support bar; 2111. an annular boss; 212. a connecting plate; 213. a support spring;
22. a push rod; 221. fixing a sleeve; 222. pressing the cap; 2221. a through hole;
23. an upper tool nose;
24. a lower tool nose;
3. a pressure warning assembly;
31. a shield case; 311. an LED lamp;
32. a pressure sensor;
33. a controller;
34. connecting columns; 35. a travel switch.
Detailed Description
In order to clearly understand the technical solution, the purpose and the effect of the present invention, a detailed description of the present invention will be described with reference to the accompanying drawings. Where adjective or adverbial modifiers "upper" and "lower", "top" and "bottom", "inner" and "outer" are used merely to facilitate relative reference between groups of terms, and do not describe any particular directional limitation on the modified terms. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, the present invention provides a pressure compensation device which can be installed in a casing of an electric power equipment, the pressure compensation device comprising a corrugated pipe 1 and a pressure release assembly 2, wherein:
as shown in fig. 1 and fig. 2, the upper and lower ends of the bellows 1 are respectively connected with a top cover 11 and a bottom cover 12 in a sealing manner, that is, the bellows 1, the top cover 11 and the bottom cover 12 enclose to form an expander, the expander is filled with insulating gas to be used as a regulating component of the internal pressure of the casing, wherein the insulating gas is the prior art, and is not described herein again, the top cover 11 is provided with an inflation/deflation mechanism 111, specifically, the inflation/deflation mechanism 111 can be a valve core, a thimble or a valve capable of realizing inflation/deflation, an external gas source can be injected into the bellows 1 through the inflation/deflation mechanism 111 by an inflation device, the gas in the bellows 1 can be discharged through the inflation/deflation mechanism 111, so as to accurately adjust the internal pressure of the bellows 1 according to the actual environmental temperature and the compensation amount, and adjust the internal pressure of the casing by utilizing the stretching and contraction of the bellows 1 in the length direction, so that the internal pressure of the casing is within a suitable range;
as shown in fig. 2, the pressure releasing assembly 2 is disposed in the corrugated tube 1, and the length of the pressure releasing assembly 2 is smaller than the length of the corrugated tube 1 initially disposed in the casing, so as to prevent the pressure releasing assembly 2 from affecting the normal pressure regulating operation of the corrugated tube 1, the pressure releasing assembly 2 includes a bracket 21 and a push rod 22 connected to the bracket 21 and capable of moving up and down relative to the bracket 21, the upper end of the bracket 21 is connected to the top cover 11, i.e. the push rod 22 is suspended below the top cover 11, and the push rod 22 is capable of moving towards or away from the top cover 11, the upper end of the push rod 22 is connected to an upper knife tip 23 capable of puncturing the top cover 11, preferably, the upper knife tip 23 and the push rod 22 are of an integral structure, when the internal pressure of the casing is within a proper range, the push rod 22 does not contact with the top cover 11, when the internal pressure of the casing is increased, the corrugated tube 1 is squeezed to contract, and when the internal pressure of the casing is continuously increased, the bellows 1 is continuously compressed, so that the bottom cover 12 pushes the push rod 22 to move upwards (i.e. towards the top cover 11), at this time, the tip of the upper knife tip 23 will push the top cover 11, and will move under the action of the continuously increased internal pressure of the sleeve until the top cover 11 is broken, at this time, the insulating gas in the sleeve will be ejected through the top cover 11, the internal pressure of the bellows 1 is sharply reduced, and the purpose of reducing the internal pressure of the sleeve is achieved.
When the pressure compensation device is used, the pressure compensation device is arranged in a sleeve of power equipment, the internal pressure of the corrugated pipe 1 is adjusted through the air inflation and deflation mechanism 111 according to the actual environment temperature, so that the pressure in the sleeve is in a reasonable range, and the pressure release assembly 2 and the pressure warning assembly 3 cannot act under the condition of normal work; when the internal pressure of the sleeve is too large, the internal pressure of the sleeve enables the corrugated pipe 1 to contract, when the internal pressure of the sleeve is continuously increased, the corrugated pipe 1 is continuously compressed, so that the bottom cover 12 pushes the push rod 22 to move upwards (towards the top cover 11), at the moment, the tip of the upper knife tip 23 can push the top cover 11 and can move under the action of the continuously increased internal pressure of the sleeve until the top cover 11 is broken, at the moment, the insulating gas in the sleeve can be sprayed out through the top cover 11, the internal pressure of the corrugated pipe 1 is sharply reduced, and the internal pressure of the sleeve is reduced.
According to the pressure compensation device, the inflation and deflation mechanism 111 is arranged on the top cover 11, so that the sealing performance of the corrugated pipe 1 can be ensured, and the internal pressure of the corrugated pipe 1 can be adjusted according to the actual environment temperature, so that the internal pressure of the sleeve is in a proper range; through set up pressure release subassembly 2 in bellows 1 inside, can in time release product internal pressure under extreme condition, avoid the product explosion.
Furthermore, a pressure release sheet 112 is arranged on the top cover 11 corresponding to the upper knife tip 23, a cross-shaped pressure groove (not shown in the figure) is arranged on the pressure release sheet 112, and the upper knife tip can smoothly puncture the pressure release sheet 112, so that the operation of bursting the top cover 11 is simpler and quicker, and when the pressure in the corrugated pipe 1 is too high, the cross-shaped pressure groove can also break, thereby increasing the reliability of the pressure release of the corrugated pipe 1.
In one embodiment of the present invention, as shown in fig. 2, the support 21 includes at least two support rods 211 arranged at equal intervals along the circumferential direction of the top cover 11, and in the preferred embodiment shown in fig. 3, the support 21 includes three support rods 211, such that the support 21 can more stably support the push rod 22, the push rod 22 is located in the middle of the three support rods 211, of course, the support 21 may also include four, five or more support rods 211, as long as the normal use of the corrugated pipe 1 is not affected, the upper end of the support rod 211 is connected with the top cover 11, specifically, the upper end of the support rod 211 is provided with an external thread, the top cover 11 is provided with a threaded hole, the support rod 211 is connected with the top cover 11 through the thread fit of the external thread, the lower portion of the support rod 211 is provided with an annular boss 2111 protruding outwards, the support rod 211 is sleeved with a connecting plate 212, the connecting plate 212 can reciprocate between the top cover 11 and the annular boss 2111, that is, annular boss 2111 and top cap 11 can play a limiting role in the movement of connecting plate 212, each connecting plate 212 all meets catch bar 22 and can follow catch bar 22 synchronous motion, specifically, the first pot head of connecting plate 212 is located on bracing piece 211, the second end and catch bar 22 fixed connection of connecting plate 212, bottom 12 promotes catch bar 22 and moves, catch bar 22 drives each connecting plate 212 synchronous motion, connecting plate 212 can play a guide role in the movement of catch bar 22 along bracing piece 211 removal, so that catch bar 22 can break top cap 11 smoothly.
Further, in order to avoid the situation that the push rod 22 breaks the top cover 11 due to misoperation of a worker, as shown in fig. 3, the support spring 213 is sleeved on the support rod 211, the support spring 213 can limit the movement of the push rod 22, the upper end of the support spring 213 is connected with the top cover 11, and the connecting plate 212 can reciprocate between the support spring 213 and the annular boss 2111, so that the problem that the push rod 22 breaks the top cover 11 due to the fact that the corrugated pipe 1 is pressed by a human error is solved.
Further, as shown in fig. 2, the push rod 22 is sleeved with the fixing sleeve 221, the fixing sleeve 221 and the push rod 22 are in interference fit, that is, the fixing sleeve 221 does not move relative to the push rod 22, and each connecting plate 212 is connected with the fixing sleeve 221, that is, the connecting plate 212 is connected with the push rod 22 through the fixing sleeve 221, so that not only is the connection operation between the push rod 22 and the connecting plate 212 simple, but also the length of the push rod 22 can be adjusted according to actual use requirements, and of course, the fixing sleeve 221 and the push rod 22 can also be in an integrated structure.
Still further, the lower extreme of catch bar 22 is equipped with presses cap 222, and the cover is equipped with spacing spring (not shown in the figure) on catch bar 22, and the fixed cover 221 of both ends butt respectively of spacing spring and press cap 222, and spacing spring can further avoid because of the condition emergence that the maloperation leads to catch bar 22 to remove bursting top cap 11.
In an example of the present embodiment, as shown in fig. 1 and 2, the length of the push rod 22 is greater than that of the support rod 211, the upper end of the support rod 211 is connected with a lower blade 24 capable of puncturing the bottom cover 12, preferably, the lower blade 24 and the support rod 211 are an integral structure, and when the push rod 22 is located at the initial position, the lower blade 24 is located above the press cap 222, and when the upper blade 23 breaks the top cover 11, the lower blade 24 will push the bottom cover 12 and tear the bottom cover 12, so that the insulating gas in the corrugated tube 1 is rapidly ejected from the top cover 11 and the bottom cover 12, thereby achieving the purpose of rapidly reducing the internal pressure of the sleeve.
In another example of the present embodiment, the lower end of the pushing rod 22 is connected to a lower knife tip (not shown) capable of puncturing the bottom cover 12, preferably, the lower knife tip and the pushing rod 22 are in an integral structure, a sliding sleeve (not shown) is sleeved outside the lower knife tip 24, the upper end of the sliding sleeve can move up and down and is connected to the pushing rod 22, after the upper knife tip 23 breaks the top cover 11, the connecting plate 212 cannot move continuously under the restriction of the supporting rod 211, the bottom cover 12 will push the sliding sleeve to move relative to the pushing rod 22, so that the lower knife tip 24 is exposed, the exposed lower knife tip 24 will push the bottom cover 12 and tear the bottom cover 12, so that the insulating gas in the bellows 1 is rapidly ejected from the top cover 11 and the bottom cover 12, thereby achieving the purpose of rapidly reducing the internal pressure of the casing.
Specifically, the upper end of the sliding sleeve can be connected with the push rod 22 through a shear pin, when the connecting plate 212 cannot move continuously under the limitation of the supporting rod 211, the bottom cover 12 pushes the sliding sleeve under the action of external pressure to cut the shear pin, so that the sliding sleeve moves relative to the push rod 22 to expose the lower blade tip.
Alternatively, a reaction spring is provided between the upper end of the sliding sleeve and the top cover, and when the upper knife tip 23 breaks the top cover 11 and the connection plate 212 is restricted by the support rod 211 and cannot move further, the reaction spring can be compressed by the sliding sleeve under the pushing of the bottom cover 12.
In an embodiment of the present invention, as shown in fig. 3, the support 21 is a hollow cylinder with two open ends, the top cover 11 is provided with a threaded blind hole, the outer peripheral surface of the upper end of the support 21 is provided with an external thread, the support 21 is connected with the top cover 11 through the external thread and the threaded blind hole, the lower end of the support 21 is provided with a lower knife tip 24, the lower knife tip 24 and the support 21 can be an integral structure, the support 21 is sleeved outside the push rod 22, the lower end of the push rod 22 extends out of the support 21, the lower end of the push rod 22 is connected with a press cap 222, the press cap 222 is provided with a through hole 2221 for the lower knife tip 24 to pass through, when in use, if the internal pressure of the sleeve is too high, the internal pressure of the sleeve shrinks the corrugated tube 1, and when the pressure in the sleeve is continuously increased, the corrugated tube 1 is continuously compressed, so that the bottom cover 12 pushes the press cap, so that the push rod 22 moves upward (i.e. toward the top cover 11) relative to the support 21, at this time, the upper knife tip 23 extends out of the support 21, and the tip of the upper knife tip 23 abuts against the top cover 11 and moves under the action of the continuously increased internal pressure of the sleeve until the top cover 11 is broken, at this time, the insulating gas in the sleeve is ejected through the top cover 11, the internal pressure of the corrugated tube 1 is sharply reduced, and as the push rod 22 moves upward relative to the support 21, the lower knife tip 24 penetrates through the through hole 2221 to abut against the bottom cover 12 and tear the bottom cover 12, so that the insulating gas in the corrugated tube 1 is rapidly ejected from the top cover 11 and the bottom cover 12, and the internal pressure of the sleeve is rapidly reduced.
In an embodiment of the present invention, as shown in fig. 4, the pressure compensation device further includes a pressure warning component 3, that is, the pressure compensation device includes the above-mentioned corrugated pipe 1, a pressure releasing component 2 and a pressure warning component 3, the pressure warning component 3 is connected to the top cover 11, the pressure warning component 3 can send a warning signal when the internal pressure of the corrugated pipe 1 is not equal to a preset pressure, wherein the preset pressure is a preset safety range value according to the actual used casing, specifically, the pressure warning component 3 can know the internal pressure of the casing by detecting the internal pressure of the corrugated pipe 1, when the detected pressure is within the safety range value, the pressure warning component 3 does not send a warning signal, when the detected pressure is not within the safety range value, the pressure warning component 3 can send a warning signal to prompt the patrolman that the pressure in the casing is abnormal, so that the staff can process in time and eliminate potential safety hazards.
In one example of the present embodiment, as shown in fig. 5, the pressure warning assembly 3 includes a shield case 31, a pressure sensor 32, and a controller 33, wherein:
the shielding cover 31 is used for high-voltage shielding, the shielding cover 31 is connected to the top cover 11, specifically, the shielding cover 31 is connected to the top cover 11 through screws, the shielding cover 31 is provided with a plurality of LED lamps 311 along the circumferential direction, preferably, the plurality of LED lamps 311 are arranged at equal intervals, the shielding cover 31 and the top cover 11 are electrically connected and then are at the same potential, the electric field intensity in the shielding cover 31 is zero, so as to protect the use safety of each component inside the shielding cover 31;
the pressure sensor 32 is connected to the top cover 11, the pressure sensor 32 can detect the pressure inside the corrugated pipe 1, and the pressure change inside the sleeve can be indirectly obtained through the pressure change inside the corrugated pipe 1;
the controller 33 is electrically connected with the LED lamp 311 and the pressure sensor 32, the controller 33 receives a pressure detection signal of the pressure sensor 32 and controls the LED lamp 311 to send out a warning signal when the pressure detection signal is not equal to a preset pressure; specifically, the controller 33 is a control circuit board, of course, the controller 33 may also be a control chip, the control circuit board is embedded inside the shielding case 31, a battery for driving the LED lamp 311 and the pressure sensor 32 to operate is installed on the control circuit board, and both the LED lamp 311 and the pressure sensor 32 are electrically connected to the control circuit board through an electric wire, for example, if the preset pressure is 0.1MPa to 0.25MPa, when the pressure detection signal sent by the pressure sensor 32 is lower than 0.1MPa, the control circuit board controls the LED lamp 311 to display yellow light, when the pressure detection signal sent by the pressure sensor 32 is higher than 0.25MPa, the controller 33 controls the LED lamp 311 to display red light, when the pressure detection signal sent by the pressure sensor 32 is higher than 0.2MPa and lower than 0.25MPa, the controller 33 controls the LED lamp 311 to display orange warning light, when the pressure detection signal sent by the pressure sensor 32 is 0.1MPa to 0.2MPa, the pressure in the casing is in a normal range by default, at the moment, the circuit is in a dormant state, the LED lamp 311 cannot be turned on, the service life of the battery is prolonged, and therefore, the patrol worker can directly know the pressure condition in the casing by displaying light with different colors.
The color of the LED lamp 311 may be adjusted according to actual needs, and is not limited to the above color.
Further, pressure warning subassembly 3 still includes bee calling organ (not shown in the figure), bee calling organ sets up in shield cover 31 and is connected with controller 33 electricity, controller 33 can control bee calling organ when pressure detection signal is not equal to preset pressure and send warning signal, it is concrete, bee calling organ can direct mount on control circuit board, also can install the inside of locating shield cover 31 and meet with control circuit board through the electric wire, when pressure that pressure sensor 32 detected is less than or is greater than preset pressure within range, bee calling organ sends buzzing alarm sound, and the staff is tourd in the suggestion in time, unusual appears in the intraductal pressure of cover, the colour that combines LED lamp 311 to show, can make the timely accurate or intraductal pressure condition of staff of tours, thereby can be accurate learn the running state of product.
In another example of embodiment, as shown in fig. 6, the pressure warning assembly 3 comprises a shield 31, a connection post 34 and a controller 33, wherein:
the shielding cover 31 is used for high-voltage shielding, the shielding cover 31 is connected to the top cover 11, specifically, the shielding cover 31 is connected to the top cover 11 through screws, the shielding cover 31 is provided with a plurality of LED lamps 311 along the circumferential direction, preferably, the plurality of LED lamps 311 are arranged at equal intervals, the shielding cover 31 and the top cover 11 are electrically connected and then are at the same potential, the electric field intensity in the shielding cover 31 is zero, so as to protect the use safety of each component inside the shielding cover 31;
the connecting column 34 is arranged in the corrugated pipe 1, the upper end of the connecting column 34 is connected with the top cover 11, specifically, the upper end of the connecting column 34 is connected with the top cover 11 through threads, at least one travel switch 35 is connected to the connecting column 34, the travel switch 35 can be triggered by the movement of the push rod 22, specifically, the connecting column 34 is arranged close to one of the support rods 211, the travel switch 35 can be triggered by a connecting plate 212 sleeved on the support rod 211 in the process of moving along with the push rod 22, the specific arrangement and installation of the travel switch 35 are the prior art, and are not described herein again, naturally, a trigger (such as a push rod or a touch protrusion and the like) capable of triggering the travel switch 35 can be directly arranged on the push rod 22, and are not described herein again;
the controller 33 is electrically connected to the LED lamp 311 and the travel switch 35, the controller 33 controls the LED lamp 311 to send out a warning signal when the travel switch 35 is triggered, although a specific installation position of the controller 33 is not shown in fig. 6, the controller 33 may be consistent with the installation position shown in fig. 5, specifically, the controller 33 is a control circuit board, of course, the controller 33 may also be a control chip, the control circuit board is embedded inside the shielding cover 31, a battery for driving the LED lamp 311 to work is installed on the control circuit board, the LED lamp 311 is electrically connected to the control circuit board through an electric wire to set the two travel switches 35, for example, the two travel switches 35 are an early warning travel switch and an alarm travel switch, respectively, and correspondingly, an early warning loop and an alarm loop are provided on the control circuit, the early warning travel switch is triggered to turn on the early warning loop, and the alarm travel switch is triggered to turn on the alarm loop, if the pressure in the sleeve is within the normal range and the pressure in the corrugated pipe 1 is 0.1MPa to 0.25MPa, the early warning travel switch is arranged at the position where the corrugated pipe 1 is extruded to the internal pressure of 0.2MPa to 0.25MPa, the alarm travel switch is arranged at the position where the corrugated pipe 1 is extruded to the internal pressure of equal to or more than 0.25MPa, when the pressure in the sleeve is increased to enable the bottom cover 12 to push the push rod 22 to move, the push rod 22 drives the connecting plates 212 to synchronously move, when the connecting plates 212 do not trigger any travel switch, the circuit is in a dormant state, the LED lamp 311 cannot be lighted to prolong the service time of the battery, when the connecting plates 212 trigger the early warning travel switch, the early warning loop is conducted, the control circuit controls the LED lamp 311 to display orange early warning light, when the connecting plates 212 trigger the alarm travel switch 35, the warning loop is conducted, the control circuit controls the LED lamp 311 to display red warning light, therefore, the patrol staff can directly know the pressure condition inside the sleeve by displaying the light with different colors.
It should be noted that the light color of the LED lamp 311 can be adjusted according to actual needs, and is not limited to the above colors, and can also be distinguished by displaying different numbers of LED lamps.
Certainly, in order to reduce the consumption of the power supply, the controller 33 is not needed, the travel switch 35 directly controls the LED lamp 311 to alarm, the LED lamp 311 can be electrically connected with the power supply through the travel switch 35, if the pressure in the sleeve is within a normal range, the connection board 212 does not trigger the travel switch 35, the circuit is in an off state, the LED lamp 311 is not turned on to prolong the service time of the battery, when the connection board 212 triggers the early warning travel switch, the power supply is connected with the LED lamp 311, and the LED lamp 311 displays red alarm light, so that the patrol staff can directly know the pressure condition in the sleeve.
Further, pressure warning subassembly 3 still includes bee calling organ (not shown in the figure), bee calling organ set up in shield cover 31 and be connected with controller 33 electricity, controller 33 is in system bee calling organ sends alarm signal when travel switch 35 is triggered, it is concrete, bee calling organ can direct mount on control circuit board, also can install the inside of locating shield cover 31 and meet with control circuit board through the electric wire, when travel switch 35 is triggered, bee calling organ sends buzzing alarm sound, and the staff is tourd in the suggestion in time, the intraductal pressure of cover appears unusually, the colour that combines LED lamp 311 to show, can be so that the staff is tourd in time accurate or the intraductal pressure condition of cover, thereby can be accurate the running state who learns the product.
The operation of the pressure compensation device of the present invention will be described in detail with reference to the structure of the pressure warning assembly 3 shown in fig. 5:
as shown in fig. 1, 2 and 5, when the pressure compensation device is used, the pressure compensation device of the present invention is installed in a casing of an electrical device, and the internal pressure of the corrugated tube 1 is adjusted to a preset pressure by the inflation/deflation mechanism 111 according to the actual ambient temperature, so that the pressure in the casing is within a reasonable range, and under the condition of normal operation, the pressure release assembly 2 and the pressure warning assembly 3 will not operate, and the LED lamp 311 will not be on, so as to prolong the service life of the battery; when the pressure detection signal sent by the pressure sensor 32 is lower than the preset pressure range, the control circuit board controls the LED lamp 311 to display yellow light; when the pressure detection signal sent by the pressure sensor 32 is slightly higher than the preset pressure (i.e. the difference between the pressure detection signal and the maximum preset pressure is less than 0.5MPa), the control circuit board controls the LED lamp 311 to display an orange early warning light and controls the buzzer to send an early warning beep; when the pressure detection signal sent by the pressure sensor 32 is higher than the preset pressure by more than 0.5MPa, the control circuit board controls the LED lamp 311 to display red light and controls the buzzer to send out alarm buzzing; meanwhile, if the pressure in the sleeve is continuously increased, so that the bottom cover 12 pushes the push rod 22 to move upwards (i.e. towards the top cover 11), the tip of the upper knife tip 23 will push the top cover 11, and the top cover 11 will be burst under the action of the continuously increased internal pressure of the sleeve, at this time, the internal pressure of the corrugated pipe 1 is sharply reduced, the lower knife tip 24 will push the bottom cover 12 and tear the bottom cover 12, so that the insulating gas in the corrugated pipe 1 is rapidly ejected from the top cover 11 and the bottom cover 12, and the internal pressure of the sleeve is rapidly reduced.
In summary, the pressure compensation device of the invention, by arranging the inflation and deflation mechanism on the top cover, can not only ensure the sealing performance of the corrugated pipe, but also adjust the internal pressure of the corrugated pipe according to the actual environmental temperature, so that the internal pressure of the sleeve is in a proper range;
according to the pressure compensation device, the pressure release assembly is arranged in the corrugated pipe, so that the internal pressure of a product can be released in time under extreme conditions, and the product explosion is avoided;
according to the pressure compensation device, the pressure warning component is arranged, so that patrols can find the abnormal condition of the pressure in the sleeve in time conveniently, and can know the running state of a product through different light displays;
according to the pressure compensation device, when the internal pressure of the sleeve is in a reasonable range, the pressure warning assembly is in a power-off state, so that the energy consumption is effectively reduced, and the pressure warning assembly can work for a long time;
the pressure compensation device is low in cost and convenient to use, and the modules are arranged independently, so that the pressure compensation device can be freely combined according to actual use requirements.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention. It should be noted that the components of the present invention are not limited to the above-mentioned whole application, and various technical features described in the present specification can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention.
Claims (14)
1. A pressure compensating device, comprising:
the upper end and the lower end of the corrugated pipe are respectively connected with a top cover and a bottom cover in a sealing manner, and the top cover is provided with an inflation and deflation mechanism;
the pressure release assembly is arranged in the corrugated pipe and comprises a support and a push rod which is connected to the support and can move up and down relative to the support, the upper end of the support is connected with the top cover, and the upper end of the push rod is connected with an upper knife tip which can puncture the top cover; the bottom cover can push the push rod to move towards the top cover, and the upper tool tip can break the top cover; the lower end of the push rod is connected with a lower cutter point capable of puncturing the bottom cover, a sliding sleeve is sleeved outside the lower cutter point, and the upper end of the sliding sleeve can move up and down and is connected with the push rod.
2. Pressure compensation device according to claim 1,
the support includes two at least edges the bracing piece that the circumference of top cap was equidistant set up, the upper end of bracing piece with the top cap meets, the lower part of bracing piece is equipped with outside convex cyclic annular boss, the cover is equipped with the connecting plate on the bracing piece, the connecting plate can the top cap with reciprocating motion between the cyclic annular boss, each the connecting plate all with the catch bar meets and can follow catch bar synchronous motion.
3. Pressure compensation device according to claim 2,
the supporting rod is sleeved with a supporting spring, the upper end of the supporting spring is connected with the top cover, and the connecting plate can reciprocate between the supporting spring and the annular boss.
4. Pressure compensation device according to claim 2,
the push rod is sleeved with a fixed sleeve, and each connecting plate is connected with the fixed sleeve.
5. Pressure compensation device according to claim 4,
the lower extreme of catch bar is equipped with presses the cap, the cover is equipped with spacing spring on the catch bar, spacing spring's both ends butt respectively fixed cover with press the cap.
6. Pressure compensation device according to claim 2,
the length of the push rod is greater than that of the supporting rod, and the upper end of the supporting rod is connected with a lower knife tip capable of puncturing the bottom cover.
7. Pressure compensation device according to claim 1,
the support is in a hollow cylinder shape with two open ends, a lower tool nose is arranged at the lower end of the support, the support is sleeved outside the push rod, the lower end of the push rod extends out of the support, a pressing cap is connected to the lower end of the push rod, and a through hole for the lower tool nose to penetrate through is formed in the pressing cap.
8. Pressure compensation device according to claim 1,
and a pressure release sheet is arranged on the top cover corresponding to the upper tool tip, and a cross-shaped pressure groove is formed in the pressure release sheet.
9. Pressure compensation device according to one of claims 1 to 8,
the pressure compensation device further comprises a pressure warning assembly, the pressure warning assembly is connected to the top cover, and the pressure warning assembly can send a warning signal when the internal pressure of the corrugated pipe is not equal to the preset pressure.
10. Pressure compensation device according to claim 9,
the pressure warning assembly includes:
the shielding cover is connected to the top cover, and a plurality of LED lamps are arranged on the shielding cover along the circumferential direction;
a pressure sensor connected to the top cover, the pressure sensor being capable of detecting an internal pressure of the bellows;
the controller is electrically connected with the LED lamp and the pressure sensor, receives a pressure detection signal of the pressure sensor and controls the LED lamp to send out a warning signal when the pressure detection signal is not equal to the preset pressure.
11. Pressure compensation device according to claim 10,
the pressure warning assembly further comprises a buzzer, the buzzer is arranged in the shielding cover and electrically connected with the controller, and the controller can control the buzzer to send out a warning signal when the pressure detection signal is not equal to the preset pressure.
12. Pressure compensation device according to claim 9,
the pressure warning assembly includes:
the shielding cover is connected to the top cover, and a plurality of LED lamps are arranged on the shielding cover along the circumferential direction;
the spliced pole, it set up in the bellows, the upper end of spliced pole with the top cap meets, be connected with at least one travel switch on the spliced pole, the removal of catch bar can trigger travel switch, travel switch can be when being triggered control the LED lamp sends warning signal.
13. Pressure compensation device according to claim 9,
the pressure warning assembly includes:
the shielding cover is connected to the top cover, and a plurality of LED lamps are arranged on the shielding cover along the circumferential direction;
the connecting column is arranged in the corrugated pipe, the upper end of the connecting column is connected with the top cover, at least one travel switch is connected onto the connecting column, and the travel switch can be triggered by the movement of the push rod;
the controller is electrically connected with the LED lamp and the travel switch, and the controller controls the LED lamp to send out a warning signal when the travel switch is triggered.
14. Pressure compensation device according to claim 13,
the pressure warning assembly further comprises a buzzer, the buzzer is arranged in the shielding cover and electrically connected with the controller, and the controller controls the buzzer warning signal when the travel switch is triggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314844.2A CN111043433B (en) | 2019-12-19 | 2019-12-19 | Pressure compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314844.2A CN111043433B (en) | 2019-12-19 | 2019-12-19 | Pressure compensation device |
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| Publication Number | Publication Date |
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| CN111043433A CN111043433A (en) | 2020-04-21 |
| CN111043433B true CN111043433B (en) | 2021-11-09 |
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| CN201911314844.2A Active CN111043433B (en) | 2019-12-19 | 2019-12-19 | Pressure compensation device |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1187878B (en) * | 1986-01-27 | 1987-12-23 | Elek Spa | THERMOELECTRIC VALVE FOR THE SWITCHING IN DIFFERENT REFRIGERANT GAS PIPES ON PLANTS AND COOLING MACHINES |
| CN2030753U (en) * | 1987-06-24 | 1989-01-11 | 锦州家用电器二厂 | Diaphragm alarm and explosion protection expansion means |
| CN2048153U (en) * | 1989-06-05 | 1989-11-22 | 郝成功 | Automatic pressure release valve with adjustable water-level |
| CN2077579U (en) * | 1990-10-19 | 1991-05-22 | 沈阳聚氨酯橡胶厂 | Elastic expander for current transformer |
| CN2094661U (en) * | 1991-04-06 | 1992-01-29 | 沈阳变压器研究所 | Pressure release valve |
| CN2129451Y (en) * | 1992-07-31 | 1993-04-07 | 沈阳变压器厂 | Non-metal expander |
| CN2437026Y (en) * | 1999-10-12 | 2001-06-27 | 张俊岩 | Pressure releasing device |
| RU2303734C2 (en) * | 2005-08-29 | 2007-07-27 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова"(ФГУП "ВНИИА") | Preventive device with bursting membrane |
| CN201295578Y (en) * | 2008-11-24 | 2009-08-26 | 河南中新环保物流设备有限公司 | Explode-discharging apparatus on ash remover |
| CN108662151B (en) * | 2017-03-28 | 2022-05-17 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
| CN108716559A (en) * | 2018-05-15 | 2018-10-30 | 扬州市扬修电力设备有限公司 | A kind of valve relief valve |
-
2019
- 2019-12-19 CN CN201911314844.2A patent/CN111043433B/en active Active
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