CN115096407B - Combined substation state monitoring device - Google Patents
Combined substation state monitoring device Download PDFInfo
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- CN115096407B CN115096407B CN202210674266.9A CN202210674266A CN115096407B CN 115096407 B CN115096407 B CN 115096407B CN 202210674266 A CN202210674266 A CN 202210674266A CN 115096407 B CN115096407 B CN 115096407B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
- G01F23/38—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using magnetically actuated indicating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/083—Means for indicating or recording, e.g. for remote indication electrical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/086—Means for indicating or recording, e.g. for remote indication for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fluid Mechanics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a combined transformer substation state monitoring device which comprises a shell, a measuring block and a face cover fixedly arranged at the top of the shell, wherein one end of the measuring block is fixedly connected with the shell and is provided with a first vent hole, and the other end of the measuring block is provided with a temperature detection device and an oil level detection device; the top of the inner side of the shell is provided with a containing cavity and a measuring cavity, and a control circuit board is arranged in the containing cavity; the side wall of the measuring cavity is provided with a first fixing hole and a second vent hole, the first vent hole is communicated with the second vent hole, the first fixing hole is provided with a pressure detection device, the shell is also provided with a communication part, and the communication part, the pressure detection device, the temperature detection device and the oil level detection device are respectively and electrically connected with the control circuit board; the utility model discloses a combination formula transformer substation state monitoring device collects temperature detection, oil level detection and pressure detection three kinds of functions in an organic whole, has compact structure, simple to operate and the high advantage of safety in utilization.
Description
Technical Field
The invention relates to the technical field of transformer monitoring equipment, in particular to a combined transformer substation state monitoring device.
Background
The combined transformer substation is mainly used for urban public power distribution systems, such as residential communities, and when the load of a busy street increases, the capacity of a transformer is increased through the combined transformer substation; the combined transformer substation is also used for temporary power supply of construction sites, such as auxiliary power supply of field work sites or outdoor work sites of oil fields, mining, ports and wharfs, stations and the like.
In the operation process of the combined transformer substation, the oil level state, the temperature and the oil tank pressure need to be monitored, and because the oil level state directly feeds back whether the transformer has oil leakage, poor sealing and other conditions, the temperature directly reflects whether the load is abnormal in the operation process, and the oil tank pressure reflects the gas content and the discharge condition thereof.
The traditional combined transformer substation is characterized in that three sets of a pressure gauge, a thermometer and an oil level gauge are respectively arranged on the wall of a box, the installation is troublesome, no signal transmission is generated, the numerical values are read by manpower, and whether an abnormal problem exists or not is checked; the traditional combined transformer substation has the defects of more accessories and troublesome installation, and when in field use, manual regular patrol inspection is needed, the remote monitoring function is not provided, and the working condition of the combined transformer substation cannot be known at any time by staff.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a combined substation state monitoring device which integrates oil level, temperature and pressure detection functions and has the advantages of compact structure, convenience in installation and high safety in use.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the combined transformer substation state monitoring device comprises a shell, a face cover and a measuring block, wherein the face cover and the measuring block are fixedly arranged at the top of the shell, one end of the measuring block is fixedly connected with the shell and provided with a first vent hole, and the other end of the measuring block is provided with a temperature detection device and an oil level detection device; the top of the inner side of the shell is provided with a containing cavity and a measuring cavity, and a control circuit board is arranged in the containing cavity; the side wall of the measuring cavity is provided with a first fixing hole and a second vent hole, the first vent hole is communicated with the second vent hole, a pressure detection device is arranged on the first fixing hole, a communication part for realizing data output is further arranged on the shell, and the communication part, the pressure detection device, the temperature detection device and the oil level detection device are respectively and electrically connected with the control circuit board.
In the combined transformer substation state monitoring device, a display mechanism electrically connected with the control circuit board is further arranged on the shell, and the display mechanism is used for displaying data fed back by the pressure detection device and the oil level detection device in real time.
In the combined transformer substation state monitoring device, a shielding plate and a wire passing hole are arranged in the accommodating cavity, the shielding plate is made of insulating materials, the control circuit board is arranged in the shielding plate, and the wire passing hole is positioned outside the shielding plate; and one end of the measuring block is also provided with a wire passing groove, and the temperature detection device and the oil level detection device are electrically connected with the control circuit board through the wire passing groove and the wire passing hole.
In the combined transformer substation state monitoring device, the oil level detection device comprises a fixed rod, a first magnetic switch and a second magnetic switch, wherein the fixed rod is rotatably arranged on the measuring block, the first magnetic switch and the second magnetic switch are respectively arranged at the top and the bottom of the other end of the measuring block, and the first magnetic switch and the second magnetic switch are electrically connected with the control circuit board through the wire passing groove and the wire passing hole; the fixed rod is provided with a magnet, a floater and two limiting sheets, wherein the magnet is respectively connected with the first magnetic switch and the second magnetic switch in an induction way, and the two limiting sheets are used for limiting the movable position of the floater.
In the combined transformer substation state monitoring device, the wire passing hole comprises a first through hole, a second through hole and a third through hole which are sequentially communicated from top to bottom, and the third through hole is communicated with the wire passing groove; the diameter of the second through hole is smaller than that of the first through hole and smaller than that of the third through hole; and a plurality of through grooves are respectively formed in the inner walls of the two sides of the second through hole.
In the combined transformer substation state monitoring device, clamping holes are respectively formed in the left side wall and the right side wall of the shielding plate, clamping blocks are respectively arranged on the inner walls of the left side wall and the right side wall of the shell, and the clamping blocks are connected with the clamping holes in a matched mode; one or more first connecting holes are formed in the rear side wall of the shielding plate, one or more second connecting holes are correspondingly formed in the inner wall of the shell, and the control circuit board is fixedly connected with the shell through the first connecting holes and the second connecting holes; one or more limit grooves are formed in the top of the front side wall of the shielding plate.
The combined substation state monitoring device further comprises a sealing cover; the temperature detection device comprises a flexible hose and a temperature probe arranged in the flexible hose, and the temperature probe is electrically connected with the control circuit board through the wire passing groove and the wire passing hole; a fixed through groove is formed in the measuring block, the fixed through groove penetrates through the end part of the other end of the measuring block, a positioning groove is formed in the side wall of the other end of the measuring block, the positioning groove is communicated with the fixed through groove, and the flexible hose is respectively connected with the fixed through groove and the positioning groove in a matched mode; the sealing cover is connected with the fixed through groove in a matched mode, and the joint of the sealing cover and the fixed through groove is filled with sealant.
The combined transformer substation state monitoring device further comprises a sealing sheet and a fixed block, wherein a third connecting hole is formed in the bottom of the measuring cavity and used for realizing the fixed connection between the measuring block and the shell, and a limiting block is arranged on the inner wall of the third connecting hole; one or more connecting grooves are further formed in the top of the inner side of the shell, one or more connecting blocks are arranged on the face cover and are connected with the connecting grooves in a matched mode, one part of the sealing piece is located at the joint of the connecting blocks and the connecting grooves, the other part of the sealing piece is attached to the bottom of the measuring cavity, and the fixing block is in butt joint with the limiting block through the sealing piece.
In the combined transformer substation state monitoring device, a fixing mechanism is further arranged on the side wall of the shell, the fixing mechanism and the measuring block are located on the same side wall of the shell, and the fixing mechanism is used for achieving fixed connection between the shell and the combined transformer substation.
In the combined transformer substation state monitoring device, the joint of the pressure detection device and the first fixing hole, the joint of the first magnetic switch and the measuring block and the joint of the second magnetic switch and the measuring block are respectively filled with sealant.
The beneficial effects are that:
the invention provides a combined substation state monitoring device, which has the following advantages:
1. the device integrates three functions of temperature detection, oil level detection and pressure detection, and has the advantages of compact structure and convenience in installation;
2. the real-time transmission of the detection data is realized through the communication part, so that a worker can know the real-time working state of the combined transformer substation conveniently;
3. after the surface cover is covered, the measuring cavity and the accommodating cavity are two independent cavities, and oil gas only appears in the measuring cavity, so that the oil gas is prevented from directly contacting with the control circuit board, and the explosion problem caused by electric spark is avoided; and can avoid the oil infiltration to hold the intracavity, avoid promptly appearing because control circuit board soaks the short circuit problem that leads to in oily, improved the security of combination formula transformer substation state monitoring device during operation.
Drawings
Fig. 1 is a front view of a combined substation status monitoring device provided by the invention;
fig. 2 is a schematic structural diagram of the combined substation status monitoring device provided by the invention after a face cover and a temperature detection device are removed;
FIG. 3 is a schematic view of a housing according to the present invention;
FIG. 4 is a schematic view of a shielding plate according to the present invention;
FIG. 5 is a schematic diagram of a measuring block according to the present invention;
FIG. 6 is a cross-sectional view of a via provided by the present invention;
fig. 7 is an internal top view of the housing provided by the present invention.
Description of main reference numerals: 1-housing, 11-housing cavity, 111-fixture block, 112-wire passing hole, 1121-first through hole, 1122-second through hole, 1123-third through hole, 1124-through groove, 113-second connecting hole, 12-measuring cavity, 121-first fixed hole, 122-third connecting hole, 123-second vent hole, 13-shielding plate, 131-clamping hole, 132-first connecting hole, 133-limit groove, 134-second fixed hole, 14-connecting groove, 15-screw hole, 2-measuring block, 21-first vent hole, 22-groove, 23-slide groove, 24-wire passing groove, 25-fixed through groove, 26-positioning groove, 3-oil level detecting device, 31-magnet, 32-float, 33-limit piece, 34-first magnetic switch, 35-second magnetic switch, 4-communication part, 5-seal ring, 61-oil level gauge, 62-pressure gauge, 71-flexible hose, 72-temperature probe.
Detailed Description
The invention provides a combined substation state monitoring device, which is used for making the purposes, technical schemes and effects of the invention clearer and more definite, and is further described in detail below by referring to the accompanying drawings and the embodiments.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "top", "bottom", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present invention and for simplification of the description, and are not to be construed as limiting the present invention; furthermore, the terms "mounted," "connected," and the like, are to be construed broadly and, as appropriate, the specific meaning of the terms in the present invention will be understood by those of ordinary skill in the art.
Referring to fig. 1 to 7, the invention provides a combined transformer substation state monitoring device, which comprises a shell 1, a measuring block 2 and a surface cover fixedly arranged at the top of the shell 1, wherein one end of the measuring block 2 is fixedly connected with the shell 1 and is provided with a first vent hole 21, and the other end of the measuring block 2 is provided with a temperature detection device and an oil level detection device 3; the top of the inner side of the shell 1 is provided with a containing cavity 11 and a measuring cavity 12, and a control circuit board is arranged in the containing cavity 11; the side wall of the measuring cavity 12 is provided with a first fixing hole 121 and a second vent hole 123, the first vent hole 21 is communicated with the second vent hole 123, a pressure detection device is arranged on the first fixing hole 121, a communication part 4 for realizing data output is further arranged on the shell 1, and the communication part 4, the pressure detection device, the temperature detection device and the oil level detection device 3 are respectively and electrically connected with the control circuit board.
The combined substation state monitoring device disclosed by the application integrates three functions of temperature detection, oil level detection and pressure detection, and has the advantages of compact structure and convenience in installation; when the combined transformer substation state monitoring device disclosed by the application is in actual operation, the combined transformer substation state monitoring device is fixedly arranged on a combined transformer substation, the measuring block 2 is positioned in the box body of the combined transformer substation and is used for measuring the oil temperature and the oil level, the measuring cavity 12 is communicated with the inside of the combined transformer substation through the first vent hole 21 and the second vent hole 123, the pressure change in the combined transformer substation can be monitored in real time, after the face cover is covered, the measuring cavity 12 and the accommodating cavity 11 are two independent cavities, oil gas only appears in the measuring cavity 12, the oil gas is prevented from directly contacting with a control circuit board positioned in the accommodating cavity 11, so that the explosion problem caused by electric sparks is avoided, the oil is prevented from penetrating into the accommodating cavity 11, namely the short circuit problem caused by the direct contact of the oil and the control circuit board is avoided, and the safety of the combined transformer substation state monitoring device in operation is improved; further, through the data transmission that communication portion 4 can be with temperature-detecting device, oil level detection device 3 and pressure detection device real-time detection to external equipment, make things convenient for the staff to know the real-time operating condition of combination formula transformer substation, improve staff's use experience.
In one embodiment, the control circuit board is a PCB board, and one or more control chips are disposed on the PCB board; the communication part 4 is an aviation plug arranged on the face cover, and the aviation plug comprises at least one aviation plug, and in the embodiment, the aviation plug comprises two aviation plugs; the aviation plug is used for achieving 485 communication between the combined substation state monitoring device and external equipment; in other embodiments, the communication unit 4 may be a wireless communication chip disposed on the control circuit board, and the wireless communication chip may be a bluetooth chip or a WIFI chip, for implementing wireless communication connection between the combined substation status monitoring device and an external device.
In an embodiment, referring to fig. 2, a sealing ring 5 is disposed at a connection portion between the measuring block 2 and the housing 1, so as to improve connection tightness between the measuring block 2 and the housing 1, and ensure that the measuring cavity 12 is only communicated with the inside of the combined transformer substation through the first vent hole 21, so as to improve accuracy of the pressure detection device during detection, i.e. improve accuracy of a detection result.
Further, referring to fig. 1, the casing 1 is further provided with a display mechanism electrically connected to the control circuit board, where the display mechanism is used for displaying data fed back by the pressure detection device and the oil level detection device 3 in real time.
In one embodiment, the display mechanism includes an oil level gauge 61 and a pressure gauge 62, the oil level gauge 61 is provided on a front side wall of the housing 1, the measurement block 2 is provided on a rear side wall of the housing 1, and the oil level gauge 61 is welded with the housing 1; the pressure gauge 62 is arranged on the top of the surface cover, and the pressure gauge 62 is welded with the surface cover; in other embodiments, the display mechanism may be a display panel for displaying the oil level and the pressure real-time value.
Further, referring to fig. 2, 4 and 6, a shielding plate 13 and a wire through hole 112 are disposed in the accommodating cavity 11, the shielding plate 13 is made of an insulating material, the control circuit board is disposed in the shielding plate 13, and the wire through hole 112 is located outside the shielding plate 13; one end of the measuring block 2 is also provided with a wire passing groove 24, and the temperature detection device and the oil level detection device 3 are electrically connected with the control circuit board through the wire passing groove 24 and the wire passing hole 112; in one embodiment, the shielding plate 13 may be made of paper or rubber.
Because the measuring block 2 is positioned in the combined transformer substation, oil gas possibly enters the accommodating cavity 11 through the wire passing groove 24 and the wire passing hole 112, and the shielding plate 13 is arranged for shielding the oil gas output from the wire passing hole 112, so that the possibility of direct contact between the oil gas and the control circuit board is further reduced, and the safety of the combined transformer substation state monitoring device during operation is improved; in addition, because the shell 1 is made of metal, the shielding plate 13 made of insulating materials is arranged, and the pins on the control circuit board can be prevented from directly contacting with the inner wall of the shell 1, so that the shell 1 is prevented from being electrified, and the safety of the state monitoring device during working is further improved.
In one embodiment, an absorbing layer is disposed on the outer sidewall of the shielding plate 13, and the absorbing layer is adjacent to the via 112, and is used for absorbing the oil gas output from the via 112, so as to further reduce the possibility of direct contact between the oil gas and the control circuit board; in this embodiment, the absorbing layer is a sponge layer, and the absorbing layer is glued to the shielding plate 13.
Further, referring to fig. 1 and 2, the oil level detecting device 3 includes a fixed rod, a first magnetic switch 34 and a second magnetic switch 35, the fixed rod is rotatably disposed on the measuring block 2, the first magnetic switch 34 and the second magnetic switch 35 are respectively disposed at the top and the bottom of the other end of the measuring block 2, and the first magnetic switch 34 and the second magnetic switch 35 are electrically connected with the control circuit board through the wire passing slot 24 and the wire passing hole 112; the fixed rod is provided with a magnet 31, a floater 32 and two limiting plates 33, the magnet 31 is respectively connected with the first magnetic switch 34 and the second magnetic switch 35 in an induction way, and the two limiting plates 33 are used for limiting the movable position of the floater 32.
When the liquid level in the combined transformer substation becomes low, the float 32 moves downwards, the fixed rod rotates clockwise relative to the measuring block 2, and when the magnet 31 moves to be within the detection range of the second magnetic switch 35, the second magnetic switch 35 feeds back a signal to the control circuit board, so that the oil level in the combined transformer substation is too low; when the liquid level in the combined transformer substation becomes high, the float 32 moves upwards, the fixed rod rotates anticlockwise relative to the measuring block 2, when the magnet 31 moves to be within the detection range of the first magnetic switch 34, the first magnetic switch 34 feeds back signals to the control circuit board, the oil level in the combined transformer substation is indicated to be too high, real-time detection of the oil level is achieved, and the safety of the combined transformer substation in operation is improved.
In one embodiment, referring to fig. 5, a sliding groove 23 is formed at one end of the measuring block 2, a sliding block is arranged at one end of the fixing rod, the cross section of the sliding block is circular, and the sliding block is cooperatively connected with the sliding groove 23, so that the fixing rod can rotate relative to the measuring block 2; the other end of the measuring block 2 is provided with a first arc-shaped groove, and the top and the bottom of the first arc-shaped groove are used for limiting the rotation range of the fixed rod; the first magnetic switch 34 and the second magnetic switch 35 are respectively glued with the measuring block 2, the fixing rod is provided with a positioning groove 26, and the positioning groove 26 is connected with the limiting piece 33 in a matching way.
In actual operation, the slider is provided with a first magnet 31, a pointer is arranged in the oil level gauge 61, a second magnet 31 is arranged on the pointer, and polarities of the first magnet 31 and the second magnet 31 are opposite; when the measuring block 2 rotates along with the liquid level, the sliding block rotates in the sliding groove 23, and the first magnet 31 and the second magnet 31 are matched to drive the pointer to rotate along with the sliding block, so that the display of the oil level is realized.
In one embodiment, referring to fig. 5, a groove 22 is further formed at the bottom of one end of the measuring block 2, and a boss is disposed in the housing 1 and is cooperatively connected with the groove 22, so as to realize rapid positioning and installation of the measuring block 2.
Further, referring to fig. 5, the via hole 112 includes a first through hole 1121, a second through hole 1122, and a third through hole 1123 that are sequentially communicated from top to bottom, and the third through hole 1123 is communicated with the via groove 24; the second through hole 1122 has a diameter smaller than the diameter of the first through hole 1121 and smaller than the diameter of the third through hole 1123; a plurality of through grooves 1124 are respectively formed on the inner walls of the two sides of the second through hole 1122.
The diameters of the first through hole 1121 and the second through hole 1122 are larger, so that incoming wires and outgoing wires are facilitated; because the dead lever needs to rotate for measuring piece 2, consequently, the junction of dead lever and measuring piece 2 and the junction of slider and spout 23 can not pack the sealant, and oil gas can get into through the junction gap and the wire hole 112 and hold in the chamber 11, consequently, set up second through-hole 1122, the diameter of second through-hole 1122 is less, can retrain the data line, and can block oil gas, cooperate the logical groove 1124 on the inner wall of second through-hole 1122 both sides, can effectively block oil gas, greatly reduced oil gas gets into the possibility of holding the chamber 11, further improve the security of combination formula transformer substation state monitoring device during operation.
Further, referring to fig. 2 and 4, the left and right side walls of the shielding plate 13 are respectively provided with a clamping hole 131, the left and right side walls of the housing 1 are respectively provided with a clamping block 111, and the clamping blocks 111 are connected with the clamping holes 131 in a matching manner; one or more first connecting holes 132 are formed in the rear side wall of the shielding plate 13, one or more second connecting holes 113 are correspondingly formed in the inner wall of the housing 1, and the control circuit board is fixedly connected with the housing 1 through the first connecting holes 132 and the second connecting holes 113; one or more limit grooves 133 are formed in the top of the front side wall of the shielding plate 13, and the limit grooves 133 are used for limiting the movable positions of the data lines; in this embodiment, the shielding plate 13 is a rectangular shielding plate 13 with an opening at the top, the height of the shielding plate 13 is greater than that of the control circuit board, the front side wall of the shielding plate 13 is abutted against the outer wall of the measurement cavity 12, and the shielding plate 13 is fixed by the cooperation connection of the clamping block 111 and the clamping hole 131 and the cooperation connection of the first connecting hole 132 and the second connecting hole 113; the clamping block 111 and the shell 1 are integrally formed, and the control circuit board is connected with the shell 1 through the first connecting hole 132 and the second connecting hole 113 by bolts.
In one embodiment, two ends of the rear side wall of the shielding plate 13 are respectively provided with a first connecting hole 132, and two limiting grooves 133 are formed at the top of the front side wall of the shielding plate 13, so as to respectively limit the active positions of the data line of the oil level detection device 3 and the active positions of the data line of the temperature detection device, thereby improving the uniformity inside the casing 1.
Further, referring to fig. 4, a second fixing hole 134 is further formed in the top of the front wall of the shielding plate 13, the pressure detecting device includes a pressure sensor and a circuit board, the pressure sensor is electrically connected with the circuit board, the pressure sensor is fixedly disposed in the first fixing hole 121, the circuit board is fixedly disposed in the second fixing hole 134, and the circuit board is electrically connected with the control circuit board.
In other embodiments, the shielding plate 13 may be a closed rectangular shielding plate 13, so as to avoid the control circuit board from contacting with the top inside the housing 1, and when the shielding plate 13 is a closed rectangular shielding plate 13, the limiting groove 133 is formed on a side edge of the front side wall of the shielding plate 13.
Further, referring to fig. 2, the combined substation status monitoring device further includes a sealing cover; the temperature detection device comprises a flexible hose 71 and a temperature probe 72 arranged in the flexible hose 71, wherein the temperature probe 72 is electrically connected with the control circuit board through the wire passing groove 24 and the wire passing hole 112; a fixed through groove 25 is formed in the measuring block 2, the fixed through groove 25 penetrates through the end part of the other end of the measuring block 2, a positioning groove 26 is formed in the side wall of the other end of the measuring block 2, the positioning groove 26 is communicated with the fixed through groove 25, and the flexible hose 71 is respectively connected with the fixed through groove 25 and the positioning groove 26 in a matched mode; the sealing cover is connected with the fixing through groove 25 in a matched mode, and the joint of the sealing cover and the fixing through groove 25 is filled with sealant.
When the temperature detection device and the measuring block 2 are installed, the flexible hose 71 is penetrated through the measuring block 2 through the fixed through groove 25 penetrating through the other end of the measuring block 2, so that the temperature probe 72 in the flexible hose 71 can be electrically connected with the control circuit board through the wire passing groove 24 and the wire passing hole 112, namely the fixed through groove 25 penetrates through the measuring block 2, and the installation of the temperature detection device is convenient; after the installation and connection of the temperature detection device are completed, the flexible hose 71 is bent in the positioning groove 26, the bottom of the flexible hose 71 faces downwards, the measurement distance of the temperature probe 72 is prolonged, when the liquid level in the combined transformer substation becomes low, the temperature probe 72 can still normally detect the oil temperature, and the reliability and stability of the temperature detection device in operation are improved; in one embodiment, the flexible hose 71 is a corrosion resistant teflon tube and the temperature probe 72 comprises a teflon wire.
In one embodiment, a second arc-shaped groove is formed at one end of the sealing cover, and the second arc-shaped groove is fitted with the shape of the flexible hose 71, so as to limit the movable position of the flexible hose 71 and reduce the volume of the connecting gap between the sealing cover and the flexible hose 71; the other end of the sealing cover is provided with a pushing plate, the diameter of the pushing plate is larger than that of the sealing cover, and the sealing cover is convenient to install and detach; in this embodiment, the push plate and the sealing cover are integrally formed.
Further, referring to fig. 7, the combined substation status monitoring device further includes a sealing plate and a fixing block, a third connecting hole 122 is provided at the bottom of the measurement cavity 12, the third connecting hole 122 is used for realizing the fixed connection between the measurement block 2 and the housing 1, and a limiting block is provided on an inner wall of the third connecting hole 122; one or more connecting grooves 14 are formed in the top of the inner side of the shell 1, one or more connecting blocks are arranged on the surface cover, the connecting blocks are connected with the connecting grooves 14 in a matched mode, one part of the sealing piece is located at the joint of the connecting blocks and the connecting grooves 14, the other part of the sealing piece is attached to the bottom of the measuring cavity 12, and the fixing block is abutted to the limiting block through the sealing piece; in this embodiment, the connection block and the face cover are integrally formed.
The connecting groove 14 is connected with the connecting block in a matched manner, and the sealing piece is arranged at the joint of the connecting groove 14 and the connecting block, so that the connection tightness of the face cover and the shell 1 can be greatly improved, oil gas is prevented from leaking to the external environment, and the accuracy of the pressure detection device in detection is improved; in addition, the matching connection of the connecting groove 14 and the connecting block can realize the rapid positioning and installation of the face cover and the shell 1; further, the sealing plate is disposed at the bottom of the measurement cavity 12 and is fixed by the fixing block, so that oil gas can be prevented from leaking from the third connecting hole 122, good tightness of the measurement cavity 12 is maintained, and accuracy of detection of the pressure detection device is further improved.
In this embodiment, the face cover is in bolted connection with the housing 1, the sealing piece is a rubber gasket, the measuring block 2 is in bolted connection with the measuring block 2 through the third connecting hole 122, the connecting grooves 14 include two, and the two connecting grooves 14 are respectively located on the left side and the front side of the measuring cavity 12.
Further, referring to fig. 2, a fixing mechanism is further disposed on a side wall of the housing 1, and the fixing mechanism and the measuring block 2 are located on the same side wall of the housing 1, and the fixing mechanism is used for realizing a fixed connection between the housing 1 and the combined transformer substation; in one embodiment, the fixing mechanism comprises four screw holes 15 uniformly surrounding the outside of the measuring block 2, and the casing 1 is connected with the combined transformer substation through the four screw holes 15 by bolts.
Further, the junction of the pressure detection device and the first fixing hole 121, the inside of the wire passing groove 24, the junction of the first magnetic switch 34 and the measuring block 2, and the junction of the second magnetic switch 35 and the measuring block 2 are respectively filled with sealant, so that the overall sealing degree of the combined transformer substation state monitoring device can be improved, oil gas is prevented from leaking from the measuring cavity 12 to the accommodating cavity 11, the oil gas can be prevented from entering the accommodating cavity 11 from a connecting gap, and the safety of the combined transformer substation state monitoring device during operation is greatly improved.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present invention and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (9)
1. The combined transformer substation state monitoring device comprises a shell and a face cover fixedly arranged at the top of the shell, and is characterized by further comprising a measuring block, wherein one end of the measuring block is fixedly connected with the shell and is provided with a first vent hole, and the other end of the measuring block is provided with a temperature detection device and an oil level detection device; the top of the inner side of the shell is provided with a containing cavity and a measuring cavity, and a control circuit board is arranged in the containing cavity; a first fixed hole and a second vent hole are formed in the side wall of the measuring cavity, the first vent hole is communicated with the second vent hole, a pressure detection device is arranged on the first fixed hole, a communication part for realizing data output is further arranged on the shell, and the communication part, the pressure detection device, the temperature detection device and the oil level detection device are respectively and electrically connected with the control circuit board;
the accommodating cavity is internally provided with a shielding plate and a wire passing hole, the shielding plate is made of insulating materials, the control circuit board is arranged in the shielding plate, and the wire passing hole is positioned outside the shielding plate; and one end of the measuring block is also provided with a wire passing groove, and the temperature detection device and the oil level detection device are electrically connected with the control circuit board through the wire passing groove and the wire passing hole.
2. The combined substation state monitoring device according to claim 1, wherein the housing is further provided with a display mechanism electrically connected to the control circuit board, and the display mechanism is used for displaying data fed back in real time by the pressure detection device and the oil level detection device.
3. The combined transformer substation state monitoring device according to claim 1, wherein the oil level detection device comprises a fixed rod, a first magnetic switch and a second magnetic switch, the fixed rod is rotatably arranged on the measuring block, the first magnetic switch and the second magnetic switch are respectively arranged at the top and the bottom of the other end of the measuring block, and the first magnetic switch and the second magnetic switch are electrically connected with the control circuit board through the wire passing groove and the wire passing hole; the fixed rod is provided with a magnet, a floater and two limiting sheets, wherein the magnet is respectively connected with the first magnetic switch and the second magnetic switch in an induction way, and the two limiting sheets are used for limiting the movable position of the floater.
4. A modular substation status monitoring device according to any one of claims 3, wherein the via hole comprises a first through hole, a second through hole and a third through hole which are sequentially communicated from top to bottom, the third through hole being communicated with the via slot; the diameter of the second through hole is smaller than that of the first through hole and smaller than that of the third through hole; and a plurality of through grooves are respectively formed in the inner walls of the two sides of the second through hole.
5. The combined transformer substation state monitoring device according to claim 1, wherein clamping holes are respectively formed in the left side wall and the right side wall of the shielding plate, clamping blocks are respectively arranged on the inner walls of the left side wall and the right side wall of the shell, and the clamping blocks are in matched connection with the clamping holes; one or more first connecting holes are formed in the rear side wall of the shielding plate, one or more second connecting holes are correspondingly formed in the inner wall of the shell, and the control circuit board is fixedly connected with the shell through the first connecting holes and the second connecting holes; one or more limit grooves are formed in the top of the front side wall of the shielding plate.
6. The modular substation status monitoring device of claim 1, further comprising a sealing cover; the temperature detection device comprises a flexible hose and a temperature probe arranged in the flexible hose, and the temperature probe is electrically connected with the control circuit board through the wire passing groove and the wire passing hole; a fixed through groove is formed in the measuring block, the fixed through groove penetrates through the end part of the other end of the measuring block, a positioning groove is formed in the side wall of the other end of the measuring block, the positioning groove is communicated with the fixed through groove, and the flexible hose is respectively connected with the fixed through groove and the positioning groove in a matched mode; the sealing cover is connected with the fixed through groove in a matched mode, and the joint of the sealing cover and the fixed through groove is filled with sealant.
7. The combined transformer substation state monitoring device according to claim 1, further comprising a sealing piece and a fixed block, wherein a third connecting hole is formed in the bottom of the measuring cavity and used for realizing the fixed connection between the measuring block and the shell, and a limiting block is arranged on the inner wall of the third connecting hole; one or more connecting grooves are further formed in the top of the inner side of the shell, one or more connecting blocks are arranged on the face cover and are connected with the connecting grooves in a matched mode, one part of the sealing piece is located at the joint of the connecting blocks and the connecting grooves, the other part of the sealing piece is attached to the bottom of the measuring cavity, and the fixing block is in butt joint with the limiting block through the sealing piece.
8. The combined transformer substation state monitoring device according to claim 1, wherein a fixing mechanism is further arranged on the side wall of the shell, the fixing mechanism and the measuring block are located on the same side wall of the shell, and the fixing mechanism is used for achieving fixed connection between the shell and the combined transformer substation.
9. A combined substation status monitoring device according to claim 3, wherein the connection of the pressure detection device and the first fixing hole, the connection of the first magnetic switch and the measuring block, and the connection of the second magnetic switch and the measuring block are filled with sealant, respectively.
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| WO2012071693A1 (en) * | 2010-11-29 | 2012-06-07 | Wu Maoting | Pressure and temperature measuring device |
| CN216717548U (en) * | 2021-11-26 | 2022-06-10 | 广东科源电气股份有限公司 | Tubular oil level indicator |
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| CN106052732A (en) * | 2016-07-13 | 2016-10-26 | 安徽皖宏电气设备有限公司 | Integrated oil-immersed transformer oil level temperature pressure sensor |
| CN207852415U (en) * | 2018-01-25 | 2018-09-11 | 海鸿电气有限公司 | A kind of oil-immersed transformer intelligent monitoring protective device |
| CN110926537A (en) * | 2019-12-08 | 2020-03-27 | 山东电工电气集团智能电气有限公司 | Multifunctional oil-immersed transformer measuring device |
| CN213956534U (en) * | 2020-11-09 | 2021-08-13 | 深圳市大疆创新科技有限公司 | Liquid level sensor, liquid level measurement device, liquid storage tank and agricultural unmanned aerial vehicle |
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| WO2012071693A1 (en) * | 2010-11-29 | 2012-06-07 | Wu Maoting | Pressure and temperature measuring device |
| CN216717548U (en) * | 2021-11-26 | 2022-06-10 | 广东科源电气股份有限公司 | Tubular oil level indicator |
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