CN110822155A - Intelligent electromagnetic valve for oiling machine - Google Patents
Intelligent electromagnetic valve for oiling machine Download PDFInfo
- Publication number
- CN110822155A CN110822155A CN201911188951.5A CN201911188951A CN110822155A CN 110822155 A CN110822155 A CN 110822155A CN 201911188951 A CN201911188951 A CN 201911188951A CN 110822155 A CN110822155 A CN 110822155A
- Authority
- CN
- China
- Prior art keywords
- valve
- electromagnetic valve
- microcontroller
- electrically connected
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims 2
- 230000006870 function Effects 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Images
Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses an intelligent electromagnetic valve for an oiling machine, and relates to the technical field of electromagnetic valves, in particular to an intelligent electromagnetic valve for an oiling machine. The intelligent electromagnetic valve for the oiling machine detects an external magnetic field for illegally opening the electromagnetic valve and controls the electromagnetic valve to be legally opened; integrating temperature protection and overcurrent protection functions; high-precision electromagnetic valve opening control based on proportional driving; the electromagnetic valve is controlled by encrypting the mainboard based on the encryption of the national password chip, so that the anti-dismantling design of an illegal command circuit structure is prevented, and the safety of an illegal dismantling electromagnetic valve program and a secret key is ensured.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to an intelligent electromagnetic valve for an oiling machine.
Background
When the electromagnetic valve is opened by a mainboard of the oiling machine in an unauthorized mode, an external magnetic field is applied artificially and illegally, the electromagnetic valve can be forcibly opened, so that the oiling machine has a risk of cheating, although an anti-magnetic cover is additionally arranged outside the electromagnetic valve to try to solve the situation, the problems cannot be fundamentally solved due to the difficult installation, higher cost and poor anti-magnetic effect; incomplete overcurrent protection function and no temperature protection function. When coil current overflows, the fuse tube inside and outside the solenoid valve fuses to realize overcurrent protection, and after the fuse tube fuses, the fuse tube or the solenoid valve needs to be replaced, so that the maintenance cost is high. When the coil is overheated, the electromagnetic valve has no protection function, and the coil is burnt; the existing electromagnetic valve only has two states of opening and closing, cannot realize proportional driving and cannot realize more accurate control; the existing electromagnetic valve does not have a communication function and an operation function, and cannot realize intelligent control under complex conditions.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an intelligent electromagnetic valve for an oiling machine, which solves the problems that the oiling machine in the background art is difficult to install, high in cost, poor in antimagnetic effect and incapable of fundamentally solving problems due to the fact that an external magnetic field is illegally applied artificially when an oiling machine mainboard does not legally authorize to open the electromagnetic valve, an overcurrent protection function is incomplete, a temperature protection function is not available, the maintenance cost is high, no protection function is available, a coil is burnt, proportional driving cannot be achieved, more accurate control cannot be achieved, and the electromagnetic valve does not have a communication function and an operation function.
In order to achieve the purpose, the invention is realized by the following technical scheme: an intelligent solenoid valve for tanker aircraft, including valve body and big valve coil, the inside of valve body is provided with the diaphragm, and the case is installed to the below of diaphragm, the valve gap is installed to the top of valve body, and the top of valve gap installs the circuit, the flow pilot valve is installed to the top of circuit, and the top of flow pilot valve installs little valve coil, big valve coil is located the rear end of little valve coil.
Optionally, the valve body is connected with the valve core, and the valve body is connected with the valve cover.
Optionally, the circuit includes temperature sensor, prevents tearing open self-destruction, battery, magnetic field hall sensor and accumulator, microcontroller passes through for electric connection between wire and the temperature sensor, and microcontroller passes through the wire and prevents tearing open self-destruction between be electric connection, microcontroller passes through for electric connection between wire and the battery, and microcontroller passes through between wire and the magnetic field hall sensor for electric connection, microcontroller passes through between wire and the accumulator for electric connection.
Optionally, the temperature sensor, the anti-dismantling self-destruction battery and the battery are electrically connected in parallel with the microcontroller through wires.
Optionally, the magnetic field hall sensor and the memory are electrically connected in parallel with the microcontroller through a wire.
Optionally, the small valve coil and the large valve coil are electrically connected in parallel with the microcontroller through a wire.
The invention provides an intelligent electromagnetic valve for an oiling machine, which has the following beneficial effects: the intelligent electromagnetic valve has very high safety performance, can record information of an abnormal external magnetic field close to the electromagnetic valve in real time, analyze and calculate and realize alarm, has an electromagnetic valve locking function, can effectively prevent the phenomenon of oiling metering cheating caused by the illegal approach of the external magnetic field to the electromagnetic valve, has great social and economic effects, has multiple protection functions of temperature protection, overcurrent protection and the like, can greatly prolong the service life of the electromagnetic valve, reduce the maintenance cost and bring better economic benefit.
1. This an electromagnetic valve circuit structure for intelligent solenoid valve of tanker aircraft adopts the circuit to prevent tearing open the design, uses high capacity battery to guarantee to prevent tearing open the normal operating of circuit when cutting off the power supply, when being dismantled by the illegal, control program and the key that stores in the state secret chip all can self-destruct, ensures the high security performance of solenoid valve key system.
2. The solenoid valve microcontroller of the intelligent solenoid valve for the oiling machine can control the on-off of the solenoid coil, and adopts a PWM control mode to realize the proportional driving of the solenoid valve and realize the accurate opening control of the solenoid valve. The microcontroller has a national secret encryption function, stores a data encryption key, and adopts national secret encryption communication when the intelligent electromagnetic valve is communicated with the mainboard.
3. This a temperature sensor for intelligent solenoid valve of tanker aircraft detects the inside temperature of valve body in real time, and microcontroller records abnormal data in real time, can close the solenoid valve when reaching control condition to transmit data to the mainboard through RS485 communication mode. The working currents of the two groups of coils are monitored in real time through the current detection sensor, if the currents exceed the normal working range, the microprocessor records abnormal data in real time, and the electromagnetic valve can be closed when the control condition is met.
4. This a magnetic field hall sensor for intelligent solenoid valve of tanker aircraft can real-time detection outside magnetic field intensity, and microcontroller saves relevant record in real time, and microprocessor judges the legitimacy of outside magnetic field according to control algorithm to transmit magnetic field detection data to the mainboard through RS485 communication mode.
5. The intelligent electromagnetic valve for the oiling machine detects an external magnetic field for illegally opening the electromagnetic valve and controls the electromagnetic valve to be legally opened; integrating temperature protection and overcurrent protection functions; high-precision electromagnetic valve opening control based on proportional driving; the electromagnetic valve is controlled by encrypting the mainboard based on the encryption of the national password chip, so that the anti-dismantling design of an illegal command circuit structure is prevented, and the safety of an illegal dismantling electromagnetic valve program and a secret key is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic diagram of the circuit structure of the present invention.
In the figure: 1. a valve body; 2. a membrane; 3. a valve cover; 4. a circuit; 401. a temperature sensor; 402. the self-destruction is prevented; 403. a battery; 404. a magnetic field Hall sensor; 405. a reservoir; 406. a microcontroller; 5. a small valve coil; 6. a large valve coil; 7. a valve core; 8. a flow pilot valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, the present invention provides a technical solution: the intelligent electromagnetic valve for the oiling machine comprises a valve body 1 and a large valve coil 6, wherein a diaphragm 2 is arranged inside the valve body 1, a valve core 7 is arranged below the diaphragm 2, the valve body 1 is connected with the valve core 7, and the valve body 1 is connected with a valve cover 3;
the valve cap 3 is installed above the valve body 1, the circuit 4 is installed above the valve cap 3, the circuit 4 comprises a temperature sensor 401, a tamper-proof self-destruction 402, a battery 403, a magnetic field hall sensor 404 and a storage 405, a microcontroller 406 is electrically connected with the temperature sensor 401 through a lead, the microcontroller 406 is electrically connected with the tamper-proof self-destruction 402 through a lead, the microcontroller 406 is electrically connected with the battery 403 through a lead, the microcontroller 406 is electrically connected with the magnetic field hall sensor 404 through a lead, the microcontroller 406 is electrically connected with the storage 405 through a lead, the temperature sensor 401, the tamper-proof self-destruction 402 and the battery 403 are electrically connected in parallel with the microcontroller 406 through leads, the temperature sensor 401 detects the internal temperature of the valve body in real time, the microcontroller 406 records abnormal data in real time, and the electromagnetic valve can be closed when reaching a control condition, and transmits data to the mainboard in an RS485 communication mode. The working currents of the two groups of coils are monitored in real time through the current detection sensor, if the currents exceed a normal working range, the microprocessor records abnormal data in real time, and the electromagnetic valve can be closed when a control condition is met;
the magnetic field Hall sensor 404 and the memory 405 are electrically connected in parallel with the microcontroller 406 through leads, the magnetic field Hall sensor 404 can detect the external magnetic field intensity in real time, the microcontroller 406 stores relevant records in real time, and the microprocessor judges the legality of the external magnetic field according to a control algorithm and transmits magnetic field detection data to the mainboard in an RS485 communication mode;
the flow pilot valve 8 is installed above the circuit 4, the small valve coil 5 is installed above the flow pilot valve 8, the large valve coil 6 is located at the rear end of the small valve coil 5, and the small valve coil 5 and the large valve coil 6 form parallel electric connection with the microcontroller 406 through conducting wires.
In conclusion, when the intelligent electromagnetic valve for the oiling machine is used, the electromagnetic valve controls the circulation of fuel oil from an oil storage tank to an oil receiver automobile and the like, the electromagnetic valve is directly controlled to be opened and closed by legal authorization of an oiling machine mainboard, the electromagnetic valve for the oiling machine mainly comprises parts of a valve body 1, a diaphragm 2, a valve cover 3, a circuit 4, a small valve coil 5, a large valve coil 6, a valve core 7 and a flow pilot valve 8, when the oiling machine mainboard controls the electromagnetic valve to be opened, the electromagnetic valve coil is electrified, the coil generates a magnetic field, the magnetic force generated by the magnetic field sucks up the valve core 7 so as to open a valve body channel, the fuel medium passes through the valve body to achieve the function of controlling the circulation of the fuel medium, the electromagnetic valve for the oiling machine consists of a large-flow valve body and a small-flow valve body, the oiling machine mainboard controls and switches, so that the fuel medium can pass through at a, wherein, the circuit and the coil electrical components are all encapsulated in a closed cavity, the explosion-proof authentication form adopts an encapsulation type, and the product obtains an explosion-proof certificate issued by a national authority or an international authority;
then, a magnetic field Hall sensor 404 is arranged near the two groups of small driving valve coils 5 and the large driving valve coils 6 to detect the external magnetic field intensity in real time, a microcontroller 406 stores relevant records in real time, and the microprocessor judges the legality of the external magnetic field according to a control algorithm and transmits magnetic field detection data to the mainboard in an RS485 communication mode; the internal temperature of the valve body 1 is detected in real time through the built-in temperature sensor 401, the microcontroller 406 records abnormal data in real time, the electromagnetic valve can be closed when the control condition is met, data are transmitted to the mainboard in an RS485 communication mode, the working currents of the two groups of coils are monitored in real time through the current detection sensor, if the currents exceed a normal working range, the abnormal data are recorded in real time by the microprocessor, the electromagnetic valve can be closed when the control condition is met, and data are transmitted to the mainboard in an RS485 communication mode; the microcontroller 406 can control the on-off of the electromagnetic coil, and adopts a PWM control mode to realize the proportional driving of the electromagnetic valve and realize the accurate opening control of the electromagnetic valve; the electromagnetic valve circuit structure adopts a circuit anti-disassembly design, a high-capacity battery 403 is used for ensuring the normal operation of the anti-disassembly circuit during power failure, and when the electromagnetic valve is disassembled illegally, a control program and a secret key stored in a national secret chip can be self-destructed, so that the high safety performance of an electromagnetic valve secret key system is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. A intelligent solenoid valve for tanker aircraft, including valve body (1) and big valve coil (6), its characterized in that: the novel valve is characterized in that a diaphragm (2) is arranged inside the valve body (1), a valve core (7) is installed below the diaphragm (2), a valve cover (3) is installed above the valve body (1), a circuit (4) is installed above the valve cover (3), a flow pilot valve (8) is installed above the circuit (4), a small valve coil (5) is installed above the flow pilot valve (8), and a large valve coil (6) is located at the rear end of the small valve coil (5).
2. The intelligent solenoid valve for a fuel dispenser of claim 1, wherein: the valve body (1) is connected with the valve core (7), and the valve body (1) is connected with the valve cover (3).
3. The intelligent solenoid valve for a fuel dispenser of claim 1, wherein: the circuit (4) comprises a temperature sensor (401), a self-destruction prevention device (402), a battery (403), a magnetic field Hall sensor (404) and a storage device (405), the microcontroller (406) is electrically connected with the temperature sensor (401) through a wire, the microcontroller (406) is electrically connected with the self-destruction prevention device (402) through a wire, the microcontroller (406) is electrically connected with the battery (403) through a wire, the microcontroller (406) is electrically connected with the magnetic field Hall sensor (404) through a wire, and the microcontroller (406) is electrically connected with the storage device (405) through a wire.
4. The intelligent solenoid valve for a fuel dispenser of claim 3, wherein: the temperature sensor (401), the anti-dismantling self-destruction device (402) and the battery (403) are electrically connected in parallel with the microcontroller (406) through leads.
5. The intelligent solenoid valve for a fuel dispenser of claim 3, wherein: the magnetic field Hall sensor (404) and the memory (405) are electrically connected in parallel with the microcontroller (406) through a lead.
6. The intelligent solenoid valve for a fuel dispenser of claim 3, wherein: the small valve coil (5) and the large valve coil (6) are electrically connected in parallel with the microcontroller (406) through leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188951.5A CN110822155A (en) | 2019-11-28 | 2019-11-28 | Intelligent electromagnetic valve for oiling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188951.5A CN110822155A (en) | 2019-11-28 | 2019-11-28 | Intelligent electromagnetic valve for oiling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110822155A true CN110822155A (en) | 2020-02-21 |
Family
ID=69542571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911188951.5A Pending CN110822155A (en) | 2019-11-28 | 2019-11-28 | Intelligent electromagnetic valve for oiling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110822155A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791142A (en) * | 2014-01-24 | 2014-05-14 | 秦晨风 | Domestic gas and water valve safety monitoring and automatic closing device |
| CN104204637A (en) * | 2012-03-29 | 2014-12-10 | 爱信艾达株式会社 | Control device for solenoid valve driving circuit and abnormity diagnosis method |
| CN204331923U (en) * | 2014-11-28 | 2015-05-13 | 何龙 | A kind of POS be applied on mobile phone |
| CN204647508U (en) * | 2015-05-23 | 2015-09-16 | 朱国旗 | A kind of urea filling device double-flow-rate electromagnetic valve |
| CN205367713U (en) * | 2016-02-02 | 2016-07-06 | 杭州市余杭区质量计量监测中心 | Remote monitoring device of filling station |
| CN205689884U (en) * | 2016-06-21 | 2016-11-16 | 宁波高新区意创科技有限公司 | Intelligentized electric valve panel |
| CN107725873A (en) * | 2016-08-10 | 2018-02-23 | 天津市奥德瑞标准件有限公司 | A kind of low noise pneumatic element |
| CN208058105U (en) * | 2018-02-14 | 2018-11-06 | 杭州峙汇科技有限公司 | Intelligent thermoregulating tap |
| CN110260937A (en) * | 2019-06-24 | 2019-09-20 | 成都多彩任意门科技有限公司 | A kind of anti-magnetic disturbance flowmeter |
| CN211649232U (en) * | 2019-11-28 | 2020-10-09 | 广州旗骏智控科技有限公司 | Intelligent electromagnetic valve for oiling machine |
-
2019
- 2019-11-28 CN CN201911188951.5A patent/CN110822155A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204637A (en) * | 2012-03-29 | 2014-12-10 | 爱信艾达株式会社 | Control device for solenoid valve driving circuit and abnormity diagnosis method |
| CN103791142A (en) * | 2014-01-24 | 2014-05-14 | 秦晨风 | Domestic gas and water valve safety monitoring and automatic closing device |
| CN204331923U (en) * | 2014-11-28 | 2015-05-13 | 何龙 | A kind of POS be applied on mobile phone |
| CN204647508U (en) * | 2015-05-23 | 2015-09-16 | 朱国旗 | A kind of urea filling device double-flow-rate electromagnetic valve |
| CN205367713U (en) * | 2016-02-02 | 2016-07-06 | 杭州市余杭区质量计量监测中心 | Remote monitoring device of filling station |
| CN205689884U (en) * | 2016-06-21 | 2016-11-16 | 宁波高新区意创科技有限公司 | Intelligentized electric valve panel |
| CN107725873A (en) * | 2016-08-10 | 2018-02-23 | 天津市奥德瑞标准件有限公司 | A kind of low noise pneumatic element |
| CN208058105U (en) * | 2018-02-14 | 2018-11-06 | 杭州峙汇科技有限公司 | Intelligent thermoregulating tap |
| CN110260937A (en) * | 2019-06-24 | 2019-09-20 | 成都多彩任意门科技有限公司 | A kind of anti-magnetic disturbance flowmeter |
| CN211649232U (en) * | 2019-11-28 | 2020-10-09 | 广州旗骏智控科技有限公司 | Intelligent electromagnetic valve for oiling machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105575700B (en) | A kind of EMU safety circuit interlock control apparatus | |
| US20180026255A1 (en) | Battery cell for a battery of a motor vehicle, battery, motor vehicle, and method for operating a battery cell | |
| CN102884670B (en) | intelligent multifunctional accumulator | |
| CN206283111U (en) | A kind of intelligent power distribution cabinet | |
| CN211649232U (en) | Intelligent electromagnetic valve for oiling machine | |
| KR102343969B1 (en) | Safety device for a battery contactor in an electric vehicle | |
| ES2357745T3 (en) | CONTROL COUNTER WITH DEACTIVATION OF SECURITY. | |
| CN207947491U (en) | A kind of safe intelligent power distribution cabinet | |
| CN107605255B (en) | The anti-smart lock of power distribution network outdoor equipment five | |
| CN110822155A (en) | Intelligent electromagnetic valve for oiling machine | |
| CN209516370U (en) | A kind of protection system of power system switch cabinet | |
| CN106887070B (en) | A kind of ground line intelligence managing and control system for substation | |
| KR101201955B1 (en) | Electronic Meter for fire protection and tamper proof protection. | |
| CN208060596U (en) | A kind of anti-electricity-theft intelligent remote checking device | |
| CN204515895U (en) | Transformer station's finger-print type emergency release key management box | |
| CN207947492U (en) | A kind of intelligent power distribution cabinet system based on wireless radio-frequency | |
| CN207097707U (en) | A kind of regulator cubicle electrical verification anti-misoperation system | |
| CN206422418U (en) | A kind of intelligent distribution box | |
| CN109356706A (en) | A kind of monitoring of dual fuel engine and cooling device | |
| CN105161348B (en) | Hand-in-hand line centrally-positioned wire-outgoing switchgear grounding switch blocking device, system and method | |
| CN209339188U (en) | A kind of alarm device for illegally opening monitoring for intelligent well cover | |
| CN206864879U (en) | A kind of flame-proof mine multi-cavity type high voltage distribution installation | |
| CN221767308U (en) | Visual identification electric control box for dryer | |
| CN112526206A (en) | Method and system for managing RFID (radio frequency identification) key of running electric energy metering device | |
| CN219086467U (en) | Explosion-proof permanent magnet motor control box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |