CN111781094A - Automatic density relay calibration system - Google Patents
Automatic density relay calibration system Download PDFInfo
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- CN111781094A CN111781094A CN202010832423.5A CN202010832423A CN111781094A CN 111781094 A CN111781094 A CN 111781094A CN 202010832423 A CN202010832423 A CN 202010832423A CN 111781094 A CN111781094 A CN 111781094A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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Abstract
The invention discloses an automatic density relay checking system which is integrally convenient to carry and move, field checking is more convenient, and indicating values of a sulfur hexafluoride density relay are acquired through a camera assembly in the field checking. The invention comprises a box body assembly, wherein the box body assembly comprises a lower box body and an upper cover used for closing and opening the lower box body; a checking host positioning groove, an accessory positioning groove and a camera component positioning groove are formed in the lower box body; the groove body buffer cotton is filled in the groove walls of the calibration host positioning groove and the camera assembly positioning groove; the four corners of the accessory positioning groove are provided with L-shaped anti-collision pads; two supporting legs are arranged at the position, close to the upper cover, of the bottom of the lower box body, and two traveling wheels are arranged at the position, far away from the upper cover, of the bottom of the lower box body; a box-type structure calibration host assembly is arranged in the calibration host positioning groove; the camera assembly is electrically connected with the checking host assembly through a power line and is in communication connection with the checking host through a network cable.
Description
Technical Field
The invention relates to a sulfur hexafluoride density relay calibration device, which is particularly used for calibrating a sulfur hexafluoride density relay on a transformer substation site.
Background
SF6Circuit breakers are high voltage electrical appliances that are widely used in electrical power systems. SF6Reliable operation of circuit breakers has become one of the most interesting issues for the supply and consumption sector. SF6The insulation and arc-extinguishing performance of a circuit breaker depends to a large extent on SF6Density of gas, therefore, for SF6Monitoring of gas density is particularly important.
SF6The circuit breaker is monitored by SF6Density relay implementation, but SF6The density relay needs to be calibrated regularly; commercial (prior art) SF6The density relay check equipment is used for checking SF6The density relay is regularly calibrated, the specific checking principle is to simulate the gas pressure of the working environment of the sulfur hexafluoride density relay, the standard pressure sensor is used for detecting and checking whether the indicating value of the sulfur hexafluoride density meter is accurate, the current checking process can be automatically finished, only the value needs to be checked manually, the verification process and the verification principle can refer to a verification device of an SF6 density relay calibrator disclosed in Chinese patent (patent No. 2015207845761, patent publication No. 2016, 1, 13, 2016, and CN204964739U), the application unit of the patent is also a manufacturer of the prior sulfur hexafluoride density relay check meter used by our company, the calibrator has no problem in the process from the prior disassembly of the sulfur hexafluoride density meter to the laboratory calibration, but according to the actual operation and maintenance requirements, at present, more sulfur hexafluoride density relay verification work is carried out in a power failure clearance in a field verification mode;
the field calibration and laboratory calibration of the sulfur hexafluoride density relay calibrator both adopt the same calibrator, and the only difference is that the field calibration requires calibration personnel to continuously check the indication value of the sulfur hexafluoride density relay installed at a high position on site, so that the workload of the process is large, the calibration efficiency of single personnel is low, and the experience of the automatic design effect of the instrument is greatly influenced; therefore, the improvement is tried, the situation that the indication value of a relay at a high position is checked repeatedly in the checking process is avoided, and a set of complete sulfur hexafluoride density relay checking system convenient for field testing is designed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an automatic density relay checking system aiming at the defects in the prior art, the automatic density relay checking system is integrally convenient to carry and move, the on-site checking is more convenient, the indication value of the sulfur hexafluoride density relay is acquired through a camera assembly during the on-site checking, and the manual repeated ascending checking is not needed.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
an automatic density relay calibration system comprises a box body assembly, wherein the box body assembly comprises a lower box body and an upper cover used for closing and opening the lower box body; a checking host positioning groove, an accessory positioning groove and a camera component positioning groove are formed in the lower box body; the groove body buffer cotton is filled in the groove walls of the calibration host positioning groove and the camera assembly positioning groove; the four corners of the accessory positioning groove are provided with L-shaped anti-collision pads; two supporting legs are arranged at the position, close to the upper cover, of the bottom of the lower box body, and two traveling wheels are arranged at the position, far away from the upper cover, of the bottom of the lower box body;
a box-type structure calibration host assembly is arranged in the calibration host positioning groove; a camera component is placed in the camera component positioning groove;
the checking host machine component comprises a lower box cover and an upper box cover which can be opened relatively, and an air inlet connector, a GPS module, a 4G antenna, a metal key switch, a quick release switch, an exhaust connector, a DC charging port and a 5-inch display screen are arranged on the surface of the lower box cover; the surface of the lower cover of the box is also provided with a keyboard and a mouse pad, and the keyboard is adsorbed on the surface of the lower cover through a magnetic rubber pad on the back surface; the 4G antenna is adhered to the surface of the lower cover of the box;
a tablet personal computer is arranged on one surface, facing the surface of the lower cover of the box, of the upper cover of the box, the tablet personal computer is fixed on a tablet personal computer support through a butterfly nut, and the tablet personal computer support is arranged on the surface of the upper cover of the box;
the camera assembly comprises a shell, a clamp, a handle, a barrel, an inner convex ring, a first connecting rod, a mounting plate, a second connecting rod, an annular seat, a light source, a groove body, a light diffusion plate, a camera and a support, wherein the clamp is clamped on the outer wall of the shell, the handle is arranged on the clamp, the barrel is fixed at the front end of the shell through a bolt, the inner convex ring is arranged at the rear end of the shell, the mounting plate is fixedly connected in front of the inner convex ring through the first connecting rod, the annular seat is fixedly connected in front of the mounting plate through a plurality of second connecting rods, the light source is fixedly connected at the rear end of the annular seat, the groove body is arranged on the inner wall of the annular seat, the light diffusion plate is clamped in the groove body, the support is arranged at the front end of the mounting plate, the camera is fixedly; the inner wall of the cylinder is matched with the outer surface of the meter shell of the sulfur hexafluoride density relay to be verified, and a fastening bolt for fixing the cylinder on the outer surface of the meter shell of the sulfur hexafluoride density relay is arranged on the cylinder;
the camera assembly is electrically connected with the checking host assembly through a power line and is in communication connection with the checking host through a network cable.
As a preferred embodiment of the present invention: the back of the camera component is provided with a port and a power line connector; the network cable socket is fixedly connected to the front end of the mounting plate, the port is arranged at the rear end of the network cable socket and is positioned on the rear end face of the mounting plate; the barrel comprises a fixing part and a nesting part, wherein the fixing part is used for being fixed with the shell, and the nesting part is used for being fixed with a meter shell of the sulfur hexafluoride density relay.
As a preferred embodiment of the present invention: the light source and the light-diffusing plate are both annular, wherein the light-diffusing plate comprises two light-diffusing plates which are parallel to each other.
As a preferred embodiment of the present invention: a rubber foot margin is arranged at the bottom of a lower cover of the box of the checking host machine component; the lower box cover and the upper box cover are hinged through a hinge structure with damping; the surface of the lower cover of the box corresponding to the keyboard is provided with a groove, the keyboard is arranged in the groove, and the surface of the keyboard is flush with the surface of the groove.
As a preferred embodiment of the present invention: a cylinder base, a battery mounting plate, a lithium battery, a fan, an air pump and a multilayer circuit board are arranged in the lower cover of the box; the bottom of the groove sinks into the lower cover of the box to form a keyboard bracket; and the end surface of the lower cover of the box is provided with a ventilation heat dissipation hole corresponding to the installation position of the fan.
As a preferred embodiment of the present invention: an upper cover lock catch is installed on the upper cover of the box body assembly, and a lower box body of the box body assembly is provided with a lower box body lock catch which is matched with and corresponds to the upper cover lock catch; a limiting belt is connected between the upper cover and the lower box body of the box body component; the upper cover of the box body component is also provided with an upper cover handle, the lower box body of the box body component is provided with a rear handle on the mounting surface of the supporting leg, and the lower box body of the box body component is provided with a front handle on the end surface of one side opposite to the rear handle.
As a preferred embodiment of the present invention: the front handle mounting end face of the lower box body of the box body component is provided with a telescopic pull rod.
As a preferred embodiment of the present invention: the hoop is an upper half part and a lower half part which are symmetrical up and down; the handle is arranged on the upper half part, and the upper half part and the lower half part are connected after bolts are arranged through butt joint holes on two sides; a rope threading hole is also arranged between the opposite surfaces of the butt joint holes; the bottom surface of the lower half part is a horizontal supporting part.
The invention has the beneficial effects that:
the invention discloses an automatic density relay checking system, which comprises a box body assembly, wherein the box body assembly comprises a lower box body and an upper cover for closing and opening the lower box body; a checking host positioning groove, an accessory positioning groove and a camera component positioning groove are formed in the lower box body; the groove body buffer cotton is filled in the groove walls of the calibration host positioning groove and the camera assembly positioning groove; the four corners of the accessory positioning groove are provided with L-shaped anti-collision pads; two supporting legs are arranged at the position, close to the upper cover, of the bottom of the lower box body, and two traveling wheels are arranged at the position, far away from the upper cover, of the bottom of the lower box body; the whole checking system is stored by the box body assembly, and the box body assembly is similar to a luggage case in structure and is convenient to move and carry; the reliable placing of each subassembly has been guaranteed on the one hand to inside spatial layout, has still provided the maximum pertinence protection for the removal process is reliable and not fragile.
The checking host machine component comprises a lower box cover and an upper box cover which can be opened relatively, wherein an air inlet connector, a GPS module, a 4G antenna, a metal key switch, a quick release switch, an exhaust connector, a DC charging port and a 5-inch display screen are arranged on the surface of the lower box cover; the surface of the lower cover of the box is also provided with a keyboard and a mouse pad, and the keyboard is adsorbed on the surface of the lower cover through a magnetic rubber pad on the back surface; the 4G antenna is adhered to the surface of the lower cover of the box; a tablet personal computer is arranged on one surface, facing the surface of the lower cover of the box, of the upper cover of the box, the tablet personal computer is fixed on a tablet personal computer support through a butterfly nut, and the tablet personal computer support is arranged on the surface of the upper cover of the box; the checking host machine assembly is convenient to take and place for the box structure through the design, and the box upper cover can be completed and displayed through the majority of the control process of designing the tablet personal computer on the box upper cover, so that the control and the checking are more convenient.
The camera assembly is designed for acquiring the indicating value of the surface of the sulfur hexafluoride density relay in the checking process, the camera assembly can be directly and fixedly installed on the meter shell of the sulfur hexafluoride density relay, the indicating value is acquired through the camera, and the acquired information is transmitted to the checking host to be displayed, so that an operator can complete the whole checking process without leaving the checking host, and the method is very convenient and fast to operate by one person.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a case assembly of the present invention;
FIG. 2 is a schematic diagram illustrating a front view of an embodiment of a verification host assembly according to the present invention;
FIG. 3 is a schematic top view of a verification host assembly according to an embodiment of the present invention;
FIG. 4 is a side view of a verification host assembly according to an embodiment of the invention;
FIG. 5 is a schematic view of the structure of FIG. 4 taken along the section A-A;
FIG. 6 is a schematic perspective view of one embodiment of a camera module according to the present invention;
FIG. 7 is a diagram of the effects of the front orientation view of FIG. 5;
FIG. 8 is a schematic diagram of the internal structure of one embodiment of a camera assembly of the present invention;
fig. 9 is an exploded view of a camera module according to an embodiment of the invention.
Description of reference numerals:
101-upper cover handle, 102-upper cover lock catch, 103-upper cover sponge, 104-upper cover, 105-spacing belt, 106-lower box body, 107-front handle, 108-lower box body lock catch, 109-camera component positioning groove, 110-accessory positioning groove, 111-anti-collision pad, 112-groove body buffer cotton, 113-checking host positioning groove, 114-walking wheel, 115-rear handle and 116-supporting foot;
201-control panel, 202-case lower cover, 203-case upper cover, 204-fan, 205-air inlet connector, 206-rubber foot, 207-air pump, 208-air pump bracket, 209-installation copper column, 210-battery installation plate, 211-lithium battery, 212-air cylinder base, 213-GPS module, 214-mouse pad, 215-USB port, 216-4G antenna, 217-metal key switch, 218-fast exhaust switch, 219-air exhaust connector, 220-DC charging port, 221-5 inch display screen, 222-circuit board, 223-keyboard, 224-keyboard bracket, 225-upper hinge block part, 226-tablet computer, 27-butterfly nut;
301-shell, 302-clamp, 303-handle, 304-barrel, 305-inner convex ring, 306-adjusting stud, 307-mounting plate, 308-second connecting rod, 309-annular seat, 310-light source, 311-groove body, 312-light diffusion plate, 313-camera, 314-bracket, 315-network cable socket, 316-port, 317-first connecting rod, 318-fixing part, 319-fixing part assembling hole, 320-nesting part, 321-butt joint hole, 322-threading hole and 323-horizontal supporting part.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
referring to fig. 1 to 9, which illustrate an embodiment of the present invention, as shown in the drawings, an automatic density relay verification system according to the present invention includes a box assembly including a lower box 106 and an upper cover 104 for closing and opening the lower box 106; a checking host positioning groove 113, an accessory positioning groove 110 and a camera component positioning groove 109 are arranged in the lower box body; the slot body buffer cotton 112 is filled in the slot walls of the calibration host positioning slot and the camera component positioning slot; the four corners of the accessory positioning groove are provided with L-shaped anti-collision pads 111; two supporting legs 116 are arranged at the bottom of the lower box body close to the upper cover, and two travelling wheels 114 are arranged at the bottom of the lower box body far away from the upper cover;
a box-type structure calibration host assembly is arranged in the calibration host positioning groove; a camera component is placed in the camera component positioning groove;
the checking host machine component comprises a box lower cover 202 and a box upper cover 203 which can be opened relatively, wherein the surface of the box lower cover is provided with an air inlet connector 205, a GPS module 213, a 4G antenna 216, a metal key switch 217, a quick-release switch 218, an air outlet connector 219, a DC charging port 220 and a 5-inch display screen 221; the surface of the lower cover of the box is also provided with a keyboard 223 and a mouse pad 214, and the keyboard is adsorbed on the surface of the lower cover through a magnetic rubber pad on the back; the 4G antenna is adhered to the surface of the lower cover of the box; the air inlet connector is connected with an external air bottle, the GPS module is used for providing position information, the 4G antenna is used for signal remote transmission, and the metal key switch is generally a power switch; the quick exhaust switch is used for quick exhaust after verification, and the exhaust joint is connected with a gas cylinder for recovering gas; the DC charging port is used for charging an internal lithium battery; the 5 cun display screen is supplementary demonstration and prompt information, and most show controls are all accomplished at the panel computer.
A tablet computer 226 is arranged on one surface of the upper cover of the box, which faces the surface of the lower cover of the box, the tablet computer is fixed on a tablet computer bracket through a butterfly nut 227, and the tablet computer bracket is arranged on the surface of the upper cover of the box;
the camera assembly comprises a housing 301, a clip 302, a handle 303, a barrel 304, an inner collar 305, a first connecting rod 317, a mounting plate 307, a second connecting rod 308, an annular seat 309, a light source 310, a groove body 311, a light-diffusing plate 312, a camera 313, a bracket, wherein, the outer wall of the shell is clamped with a hoop, the hoop is provided with a handle, the cylinder body is fixed at the front end of the shell through a bolt, an inner convex ring is arranged at the rear end of the shell, the mounting plate is fixedly connected in front of the inner convex ring through a first connecting rod, the annular seat is fixedly connected in front of the mounting plate through a plurality of second connecting rods, the rear end of the annular seat is fixedly connected with a light source, the inner wall of the annular seat is provided with a groove body, a light diffusion plate is clamped in the groove body, the front end of the mounting plate is provided with a bracket, the bracket is fixedly connected with a camera, and the front end of the camera penetrates through the annular seat, the light source and the light-diffusing plate; the inner wall of the cylinder is matched with the outer surface of the meter shell of the sulfur hexafluoride density relay to be verified, and a fastening bolt for fixing the cylinder on the outer surface of the meter shell of the sulfur hexafluoride density relay is arranged on the cylinder;
the camera assembly is electrically connected with the checking host assembly through a power line and is in communication connection with the checking host through a network cable.
Preferably, as shown in FIGS. 5-8: the back of the camera assembly is provided with a port 316 and a power cord connector; the network cable socket is fixedly connected to the front end of the mounting plate 307, the port 316 is arranged at the rear end of the network cable socket, and the port is positioned on the rear end surface of the mounting plate; the barrel includes a fixing portion 318 for fixing with a housing and a nest portion 320 for fixing with a sulfur hexafluoride density relay case. The barrel is designed into two parts and can be detached in the embodiment, and the nested part is of a circular structure matched with the shell of the sulfur hexafluoride density meter.
Preferably, as shown in FIGS. 5-8: the light source and the light-diffusing plate are both annular, wherein the light-diffusing plate comprises two light-diffusing plates which are parallel to each other. The light source 310 may be a conventional LED ring light for providing illumination for image acquisition; the light diffusion sheet 312 is a conventional commercially available product for playing a light diffusion effect.
Preferably, as shown in FIGS. 2-5: a rubber foot 206 is arranged at the bottom of the lower cover of the box of the checking host machine component; the lower box cover and the upper box cover are hinged through a hinge structure with damping; the surface of the lower cover of the box corresponding to the keyboard is provided with a groove, the keyboard is arranged in the groove, and the surface of the keyboard is flush with the surface of the groove. The rubber foot is used for supporting, and the damped hinge can make the case upper cover stop from optional position, is similar to the hinge structure of notebook computer. The keyboard realizes a sinking effect as for the groove, so that the surface is level and not easy to collide, and the effect is very attractive.
Preferably, as shown in FIGS. 2-5: an air cylinder base 212, a battery mounting plate 210, a lithium battery 211, a fan 204, an air pump 207 and a multilayer circuit board 222 are arranged in the lower cover of the box; the bottom of the groove sinks into the lower cover of the box to form a keyboard bracket 224; and the end surface of the lower cover of the box is provided with a ventilation heat dissipation hole corresponding to the installation position of the fan. The air cylinder is arranged on the air cylinder base and used for adjusting air supply pressure, the fan is used for dissipating heat, the air pump is used for supplying air, the multilayer circuit board can ensure reliable heat dissipation among the circuit boards, and meanwhile, the plane size of the whole circuit board does not need to be designed to be too large; the lithium battery provides a mobile power supply.
Preferably, as shown in fig. 1: an upper cover lock catch 102 is arranged on an upper cover of the box body assembly, and a lower box body of the box body assembly is provided with a lower box body lock catch 108 matched and corresponding to the upper cover lock catch; a limiting belt 105 is connected between the upper cover of the box body assembly and the lower box body 106; the upper cover of the box body component is also provided with an upper cover handle 101, the lower box body of the box body component is provided with a rear handle 115 on the mounting surface of the supporting leg, and the lower box body of the box body component is provided with a front handle 107 on the end surface of one side opposite to the rear handle. The handle of the box body is beneficial to opening and closing during lifting and using.
Preferably, as shown in fig. 1: the front handle mounting end face of the lower box body of the box body component is provided with a telescopic pull rod. The telescopic pull rod can make the pulling process easy to adjust.
Preferably, as shown in FIGS. 5-8: the hoop is an upper half part and a lower half part which are symmetrical up and down; the handle 303 is arranged on the upper half part, and the upper half part and the lower half part are connected after bolts are arranged through the butt joint holes 321 on the two sides; a rope threading hole 322 is also arranged between the opposite surfaces of the butt joint holes; the bottom surface of the lower half is a horizontal support 323. The rope through hole can penetrate through a rubber band or an insulating rope to further fix the shell and the sulfur hexafluoride density relay. The horizontal supporting part can be horizontally placed to be not toppled when being used at ordinary times.
While the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes, which relate to the related art known to those skilled in the art and fall within the scope of the present invention, can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (8)
1. An automatic change density relay check-up system which characterized in that: the box body assembly comprises a lower box body and an upper cover used for closing and opening the lower box body; a checking host positioning groove, an accessory positioning groove and a camera component positioning groove are formed in the lower box body; the groove body buffer cotton is filled in the groove walls of the calibration host positioning groove and the camera assembly positioning groove; the four corners of the accessory positioning groove are provided with L-shaped anti-collision pads; two supporting legs are arranged at the position, close to the upper cover, of the bottom of the lower box body, and two traveling wheels are arranged at the position, far away from the upper cover, of the bottom of the lower box body;
a box-type structure calibration host assembly is arranged in the calibration host positioning groove; a camera component is placed in the camera component positioning groove;
the checking host machine component comprises a lower box cover and an upper box cover which can be opened relatively, and an air inlet connector, a GPS module, a 4G antenna, a metal key switch, a quick release switch, an exhaust connector, a DC charging port and a 5-inch display screen are arranged on the surface of the lower box cover; the surface of the lower cover of the box is also provided with a keyboard and a mouse pad, and the keyboard is adsorbed on the surface of the lower cover through a magnetic rubber pad on the back surface; the 4G antenna is adhered to the surface of the lower cover of the box;
a tablet personal computer is arranged on one surface, facing the surface of the lower cover of the box, of the upper cover of the box, the tablet personal computer is fixed on a tablet personal computer support through a butterfly nut, and the tablet personal computer support is arranged on the surface of the upper cover of the box;
the camera assembly comprises a shell, a clamp, a handle, a barrel, an inner convex ring, a first connecting rod, a mounting plate, a second connecting rod, an annular seat, a light source, a groove body, a light diffusion plate, a camera and a support, wherein the clamp is clamped on the outer wall of the shell, the handle is arranged on the clamp, the barrel is fixed at the front end of the shell through a bolt, the inner convex ring is arranged at the rear end of the shell, the mounting plate is fixedly connected in front of the inner convex ring through the first connecting rod, the annular seat is fixedly connected in front of the mounting plate through a plurality of second connecting rods, the light source is fixedly connected at the rear end of the annular seat, the groove body is arranged on the inner wall of the annular seat, the light diffusion plate is clamped in the groove body, the support is arranged at the front end of the mounting plate, the camera is fixedly; the inner wall of the cylinder is matched with the outer surface of the meter shell of the sulfur hexafluoride density relay to be verified, and a fastening bolt for fixing the cylinder on the outer surface of the meter shell of the sulfur hexafluoride density relay is arranged on the cylinder;
the camera assembly is electrically connected with the checking host assembly through a power line and is in communication connection with the checking host through a network cable.
2. An automated density relay verification system according to claim 1, wherein: the back of the camera component is provided with a port and a power line connector; the network cable socket is fixedly connected to the front end of the mounting plate, the port is arranged at the rear end of the network cable socket and is positioned on the rear end face of the mounting plate; the barrel comprises a fixing part and a nesting part, wherein the fixing part is used for being fixed with the shell, and the nesting part is used for being fixed with a meter shell of the sulfur hexafluoride density relay.
3. An automated density relay verification system according to claim 1, wherein: the light source and the light-diffusing plate are both annular, wherein the light-diffusing plate comprises two light-diffusing plates which are parallel to each other.
4. An automated density relay verification system according to claim 1, wherein: a rubber foot margin is arranged at the bottom of a lower cover of the box of the checking host machine component; the lower box cover and the upper box cover are hinged through a hinge structure with damping; the surface of the lower cover of the box corresponding to the keyboard is provided with a groove, the keyboard is arranged in the groove, and the surface of the keyboard is flush with the surface of the groove.
5. An automated density relay verification system according to claim 4, wherein: a cylinder base, a battery mounting plate, a lithium battery, a fan, an air pump and a multilayer circuit board are arranged in the lower cover of the box; the bottom of the groove sinks into the lower cover of the box to form a keyboard bracket; and the end surface of the lower cover of the box is provided with a ventilation heat dissipation hole corresponding to the installation position of the fan.
6. An automated density relay verification system according to claim 1, wherein: an upper cover lock catch is installed on the upper cover of the box body assembly, and a lower box body of the box body assembly is provided with a lower box body lock catch which is matched with and corresponds to the upper cover lock catch; a limiting belt is connected between the upper cover and the lower box body of the box body component; the upper cover of the box body component is also provided with an upper cover handle, the lower box body of the box body component is provided with a rear handle on the mounting surface of the supporting leg, and the lower box body of the box body component is provided with a front handle on the end surface of one side opposite to the rear handle.
7. An automated density relay verification system according to claim 6, wherein: the front handle mounting end face of the lower box body of the box body component is provided with a telescopic pull rod.
8. An automated density relay verification system according to claim 1, wherein: the hoop is an upper half part and a lower half part which are symmetrical up and down; the handle is arranged on the upper half part, and the upper half part and the lower half part are connected after bolts are arranged through butt joint holes on two sides; a rope threading hole is also arranged between the opposite surfaces of the butt joint holes; the bottom surface of the lower half part is a horizontal supporting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832423.5A CN111781094B (en) | 2020-08-18 | 2020-08-18 | Automatic sulfur hexafluoride density relay calibration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832423.5A CN111781094B (en) | 2020-08-18 | 2020-08-18 | Automatic sulfur hexafluoride density relay calibration system |
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| CN111781094A true CN111781094A (en) | 2020-10-16 |
| CN111781094B CN111781094B (en) | 2022-12-30 |
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| CN202010832423.5A Active CN111781094B (en) | 2020-08-18 | 2020-08-18 | Automatic sulfur hexafluoride density relay calibration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203660A (en) * | 2021-04-30 | 2021-08-03 | 山东希格斯新能源有限责任公司 | Lead-acid battery electrolyte performance detection device |
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| CN202974562U (en) * | 2012-09-04 | 2013-06-05 | 国家电网公司 | Automatic checking system for density relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113203660A (en) * | 2021-04-30 | 2021-08-03 | 山东希格斯新能源有限责任公司 | Lead-acid battery electrolyte performance detection device |
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