CN109141738A - A kind of petroleum works air pressure change wireless automatic alarming device and its application method - Google Patents
A kind of petroleum works air pressure change wireless automatic alarming device and its application method Download PDFInfo
- Publication number
- CN109141738A CN109141738A CN201810924891.8A CN201810924891A CN109141738A CN 109141738 A CN109141738 A CN 109141738A CN 201810924891 A CN201810924891 A CN 201810924891A CN 109141738 A CN109141738 A CN 109141738A
- Authority
- CN
- China
- Prior art keywords
- air pressure
- electric cabinet
- transceiver
- pressure change
- alarming device
- 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.)
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Classifications
-
- 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
-
- 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
- G01L19/12—Alarms or signals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of petroleum works air pressure change wireless automatic alarming devices, including electric cabinet, electric door, monitoring unit, quadrangle is provided with support frame under the electric cabinet, shifting roller is provided below in support frame as described above, the electric door is provided with before the electric cabinet, display screen is provided with above the electric door, the first bright lamp is provided with above the display screen, first bright lamp side is provided with loudspeaker, remote-control lever is provided with below the display screen, the remote-control lever side is provided with numeric keypad, is provided with box door lock below the numeric keypad.Beneficial effect is: control cabinet and monitoring unit are provided separately by the present invention, and utilize wireless radio transmission, convenient for the reasonable Arrangement of warning device, acoustic-optic alarm is all set on control cabinet and monitoring unit simultaneously, it ensure that the synchronization of automatic alarm, and it installs camera and display screen additional, convenient for checking the situation after alarm at a distance, facilitates follow-up decision.
Description
Technical field
The present invention relates to petroleum works fields, and the present invention relates to a kind of petroleum works air pressure change wireless automatic alarmings to fill
It sets and its application method.
Background technique
Petroleum works, are according to the suitable flow channel of oil gas and reservoir characteristics foundation and preferred lifting method, economy have
Ground is imitated by a series of general name of the buried engineerings and technology exploited from oil-gas reservoir in underground oil and gas and implemented to ground.Packet
Include oil reservoir, drilling well, oil recovery and petroleum ground surface works etc..Live air pressure change often plays safely great influence to petroleum works and makees
With so must timely be alarmed the air pressure for being more than limit value.
Application No. is 201621454790.1 Chinese patents for comparison, and it is wireless to disclose a kind of petroleum works air pressure change
Automatic alarm device, the petroleum works scene air pressure change wireless automatic alarming device include wireless signal sending device and wireless
Signal receiving device, which includes explosion-proof electro connecting pressure gauge, battery and wireless signal transmitter, works as stone
Oily engineering site pressure is lower than or when high sub- setting value, and the pointer of the explosion-proof electro connecting pressure gauge is contacted with lower limit or upper limit electrode
It is powered.
Above-mentioned patent lacks convenience that is mobile and placing, while monitoring close to metope, reduces accuracy.Therefore it to set
A kind of new equipment is counted, control cabinet and monitoring unit are provided separately by the present invention, and utilize wireless radio transmission, are convenient for warning device
Reasonable Arrangement, while acoustic-optic alarm is all set on control cabinet and monitoring unit, ensure that the synchronization of automatic alarm, and
And install camera and display screen additional, convenient for checking the situation after alarm at a distance, facilitate follow-up decision.
Summary of the invention
The object of the invention is that solve the above-mentioned problems and provide a kind of petroleum works air pressure change wirelessly from
Dynamic warning device and its application method, the present invention improve what petroleum works scene air pressure change wireless automatic alarming device used
Convenience.
The present invention through the following technical solutions to achieve the above objectives:
A kind of petroleum works air pressure change wireless automatic alarming device, including electric cabinet, electric door, monitoring unit, institute
It states quadrangle under electric cabinet and is provided with support frame, support frame as described above is provided below shifting roller, is provided with before the electric cabinet
The electric door is provided with display screen above the electric door, is provided with the first bright lamp above the display screen, described first is bright
Lamp side is provided with loudspeaker, is provided with remote-control lever below the display screen, the remote-control lever side is provided with numeric keypad, institute
State and be provided with box door lock below numeric keypad, the electric cabinet two sides are provided with radiator window, be provided at the top of the electric cabinet into
Transom window is provided with ventilation fan in the air intake window, and coiling hook is provided with behind the electric cabinet, is provided with below the coiling hook
First cable is provided with support plate in the electric cabinet, microprocessor, the microprocessor type is provided with above the support plate
It number is 586 types, the microprocessor side is provided with first transceiver, and the first transceiver model AD9371 type is described
The monitoring unit is provided with outside electric cabinet, the monitoring unit includes support rod, and support is provided below in the support rod
Leg is provided with the second cable behind the support rod, rotating electric machine, the rotating electric machine model is provided with above the support rod
For Z4-65 type, it is provided with turntable above the rotating electric machine, camera, the camera are provided with above the turntable
Side is provided with buzzer, is provided with second transceiver before the buzzer, the second transceiver model AD9371 type,
The buzzer side is provided with baroceptor, the baroceptor model MIK-P300 type, the baroceptor
Front is provided with the second bright lamp, and the baroceptor side is provided with venthole.
In the present embodiment, it is provided with positioning plate, the positioning plate and support frame as described above above the shifting roller and uses hinge
Chain link, support frame as described above are welded under the electric cabinet.
So set, hinge connection, convenient for rotating the stuck shifting roller of positioning plate, welding increases the branch
The bonding strength of support.
In the present embodiment, the electric door and the electric cabinet make to be hinged, first bright lamp and the loudspeaking
Device is snapped connection with the electric door use respectively.
So set, hinge connection snaps connection replacement first bright lamp easy to disassemble convenient for opening and closing the electric door
With the loudspeaker.
In the present embodiment, the radiator window is snapped connection with the electric cabinet use, the ventilation fan and the air intake window
Using being bolted.
So set, snapping connection the cleaning radiator window easy to disassemble, it is bolted the maintenance ventilation easy to disassemble
Fan.
In the present embodiment, the monitoring unit is provided with 4, and the supporting leg is welded under the support rod.
So set, 4 monitoring units increase the position of detection, welding guarantees that the supporting leg is durable.
In the present embodiment, the rotating electric machine and the support rod use are bolted, the rotating electric machine and the rotation
Turntable is connected using spline.
So set, being bolted the maintenance rotating electric machine easy to disassemble, spline connection ensure that the rotating electric machine
The smooth transport of power.
In the present embodiment, the venthole passes through the turntable, is provided with filter cotton, the filtering in the venthole
Cotton and the venthole use interference fit.
So set, the venthole passes through the turntable, the connection of the protective cover inner and outer air pressure ensure that, it is described
Filter cotton ensure that the cleaning of inner air, and interference fit prevents falling off for the filter cotton.
In the present embodiment, protective cover is provided with above the turntable, the protective cover is made of transparent material, described
Protective cover is connected with the turntable plug.
So set, the protective cover protects inner body, transparent material ensure that the shooting of the camera, plug
Connect the maintenance protective cover inner body easy to disassemble.
In the present embodiment, the microprocessor respectively with the display screen, the first transceiver, first bright lamp,
The loudspeaker, the remote-control lever and the numeric keypad using electrical connection, the second transceiver respectively with the electric rotating
Machine, second bright lamp, the baroceptor, the buzzer and the camera use electrical connection, first transmitting-receiving
Device and the second transceiver use radio connection.
So set, electrical connection ensure that data information and control the transmission of signal, radio connection be ensure that at a distance
Transmission.
In the present embodiment, specific application method including the following steps:
A, the electric cabinet is pushed to monitoring position, steps on the positioning plate, the positioning plate is by the shifting roller
Stuck, the electric cabinet is fixed, and by the first cable connection power grid, the monitoring unit is moved to monitoring field, will
The second cable connection power grid.
B, air pressure alarm limit value is inputted the microprocessor, the gas by pressing the numeric keypad by staff
The live pressure information of acquisition is passed to the first transceiver by the second transceiver by pressure sensor, and described first receives
Hair device passes information to the microprocessor.
C, the microprocessor judges by analysis, and when air pressure numerical value is more than limit value, first bright lamp is lighted, described
Loudspeaker sounding alarm, the microprocessor by the first transceiver controls the second transceiver, and to light described second bright
Lamp, the buzzer warning.
D, acquired image is passed to institute by the second transceiver and the first transceiver by the camera
Microprocessor is stated, the microprocessor shows image on the display screen, rotates the remote-control lever, and the rotating electric machine drives
The turntable rotation is moved, the turntable drives the camera rotation.
Compared with prior art, beneficial effects of the present invention are as follows:
1, control cabinet and monitoring unit are provided separately, and utilize wireless radio transmission, convenient for the reasonable Arrangement of warning device；
2, acoustic-optic alarm is all set on control cabinet and monitoring unit, ensure that the synchronization of automatic alarm；
3, camera and display screen are installed additional, convenient for checking the situation after alarm at a distance, facilitates follow-up decision.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of petroleum works air pressure change wireless automatic alarming device of the present invention；
Fig. 2 is a kind of electric cabinet axonometric drawing of petroleum works air pressure change wireless automatic alarming device of the present invention；
Fig. 3 is a kind of electric cabinet rearview of petroleum works air pressure change wireless automatic alarming device of the present invention；
Fig. 4 is a kind of electric cabinet cross-sectional view of petroleum works air pressure change wireless automatic alarming device of the present invention；
Fig. 5 is a kind of positioning plate schematic diagram of petroleum works air pressure change wireless automatic alarming device of the present invention；
Fig. 6 is a kind of monitoring unit signal of petroleum works air pressure change wireless automatic alarming device of the present invention
Figure；
Fig. 7 is a kind of turntable top view of petroleum works air pressure change wireless automatic alarming device of the present invention；
Fig. 8 is a kind of circuit structure flow chart element of petroleum works air pressure change wireless automatic alarming device of the present invention
Figure.
The reference numerals are as follows:
1, electric cabinet；2, electric door；3, display screen；4, monitoring unit；5, numeric keypad；6, remote-control lever；7, radiator window；8,
First cable；9, support frame；10, shifting roller；11, the first bright lamp；12, loudspeaker；13, air intake window；14, ventilation fan；15, case
Door lock；16, coiling hook；17, support plate；18, microprocessor；19, first transceiver；20, positioning plate；21, support rod；22, it props up
Support leg；23, the second cable；24, rotating electric machine；25, turntable；26, protective cover；27, camera；28, second transceiver；29,
Second bright lamp；30, venthole；31, filter cotton；32, baroceptor；33, buzzer.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be further explained below with reference to the attached drawings:
Embodiment 1
As Figure 1-Figure 8, a kind of petroleum works air pressure change wireless automatic alarming device, including electric cabinet 1, electronic box
Door 2, monitoring unit 4, the lower quadrangle of electric cabinet 1 are provided with support frame 9, support shifting roller 10, movement is provided below in support frame 9
Idler wheel 10 reduces 1 mobile frictional force of electric cabinet, is provided with electric door 2, inner body easy to repair, electric door before electric cabinet 1
2 are provided with display screen 3 above, show image, are provided with the first bright lamp 11 above display screen 3, light report is issued at electric cabinet 1
Alert, 11 side of the first bright lamp is provided with loudspeaker 12, alarm is made a sound at electric cabinet 1, remote control is provided with below display screen 3
Bar 6, control rotating electric machine 24 rotate, and 6 side of remote-control lever is provided with numeric keypad 5, facilitates input air pressure limit value, numeric keypad 5
Lower section is provided with box door lock 15, locking electric door 2, and 1 two sides of electric cabinet are provided with radiator window 7, and the channel of hot-air outflow is automatically controlled
It is provided with air intake window 13 at the top of case 1, the channel that cold air enters is provided with ventilation fan 14 in air intake window 13, pushes air flowing,
It is provided with coiling hook 16 behind electric cabinet 1, winds the first cable 8, is provided with the first cable 8 below coiling hook 16, give electric cabinet 1
Electric power to be transmitted, support plate 17 is provided in electric cabinet 1, supports microprocessor 18, support plate 17 is provided with microprocessor 18 above,
Analysis processing information, 18 side of microprocessor are provided with first transceiver 19, sending and receiving data, are provided with monitoring outside electric cabinet 1
Unit 4 is placed on monitoring point, and monitoring unit 4 includes support rod 21, supports rotating electric machine 24, branch is provided below in support rod 21
Support leg 22 guarantees that support rod 21 is stablized, is provided with the second cable 23 behind support rod 21, transmits electric power, branch to rotating electric machine 24
Strut 21 is provided with rotating electric machine 24 above, carries rotary power, and rotating electric machine 24 is provided with turntable 25, support camera shooting above
First 27, turntable 25 is provided with camera 27 above, shoots image, 27 side of camera is provided with buzzer 33, in monitoring point
Place issues the alarm that pipes, and second transceiver 28 is provided with before buzzer 33, is received and sent messages, 33 side of buzzer is provided with air pressure
Sensor 32 acquires pressure information, is provided with the second bright lamp 29 before baroceptor 32, light report is issued at monitoring point
Alert, 32 side of baroceptor is provided with venthole 30, guarantees that air pressure enters in protective cover 26.
Embodiment 2
The present embodiment the difference from embodiment 1 is that:
Positioning plate 20 is provided with above shifting roller 10, positioning plate 20 and support frame 9 make to be hinged, and support frame 9 welds
It connects under electric cabinet 1, the stuck shifting roller 10 of rotational positioning plate 20 is convenient in hinge connection, and welding increases the connection of support frame 9
Intensity.
In the present embodiment, specific application method including the following steps:
A, electric cabinet 1 is pushed to monitoring position, steps on positioning plate 20, positioning plate 20 is stuck by shifting roller 10, automatically controlled
Case 1 is fixed, and the first cable 8 is connected power grid, monitoring unit 4 is moved to monitoring field, and the second cable 23 is connected power grid.
B, staff is by pressing numeric keypad 5, by air pressure alarm limit value input microprocessor 18, baroceptor 32
The live pressure information of acquisition is passed into first transceiver 19 by second transceiver 28, first transceiver 19 passes the information on
To microprocessor 18.
C, microprocessor 18 judges by analysis, and when air pressure numerical value is more than limit value, the first bright lamp 11 is lighted, loudspeaker 12
Sounding alarm, microprocessor 18 control second transceiver 28 by first transceiver 19 and light the second bright lamp 29, and buzzer 33 is reported
It is alert.
D, acquired image is passed to microprocessor by second transceiver 28 and first transceiver 19 by camera 27
18, microprocessor 18 shows image on display screen 3, rotates remote-control lever 6, and rotating electric machine 24 drives turntable 25 to rotate, rotation
Turntable 25 drives camera 27 to rotate.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.
Claims (10)
1. a kind of petroleum works air pressure change wireless automatic alarming device, it is characterised in that: including electric cabinet (1), electric door
(2), monitoring unit (4), quadrangle is provided with support frame (9) under the electric cabinet (1), and shifting is provided below in support frame as described above (9)
Dynamic idler wheel (10), electric cabinet (1) front are provided with the electric door (2), and the electric door (2) is provided with display screen above
(3), it being provided with the first bright lamp (11) above the display screen (3), the first bright lamp (11) side is provided with loudspeaker (12),
It is provided with remote-control lever (6) below the display screen (3), remote-control lever (6) side is provided with numeric keypad (5), the number
It is provided with box door lock (15) below keyboard (5), electric cabinet (1) two sides are provided with radiator window (7), electric cabinet (1) top
Portion is provided with air intake window (13), is provided with ventilation fan (14) in the air intake window (13), the electric cabinet (1) be provided with below around
Line hook (16), coiling hook (16) lower section are provided with the first cable (8), are provided with support plate (17) in the electric cabinet (1),
The support plate (17) is provided with microprocessor (18) above, and microprocessor (18) side is provided with first transceiver
(19), it is provided with the monitoring unit (4) outside the electric cabinet (1), the monitoring unit (4) includes support rod (21), institute
It states support rod (21) to be provided below supporting leg (22), the support rod (21) is provided with the second cable (23), the branch below
Strut (21) is provided with rotating electric machine (24) above, and the rotating electric machine (24) is provided with turntable (25), the rotation above
Platform (25) is provided with camera (27) above, and camera (27) side is provided with buzzer (33), the buzzer (33)
Front is provided with second transceiver (28), and buzzer (33) side is provided with baroceptor (32), the air pressure sensing
It is provided with the second bright lamp (29) before device (32), baroceptor (32) side is provided with venthole (30).
2. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 1, it is characterised in that: institute
It states and is provided with positioning plate (20) above shifting roller (10), the positioning plate (20) and support frame as described above (9) make to be hinged,
Support frame as described above (9) is welded under the electric cabinet (1).
3. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 2, it is characterised in that: institute
Stating electric door (2) and the electric cabinet (1) makes to be hinged, first bright lamp (11) and the loudspeaker (12) respectively with
Electric door (2) use snaps connection.
4. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 3, it is characterised in that: institute
It states radiator window (7) to snap connection with the electric cabinet (1) use, the ventilation fan (14) and the air intake window (13) use bolt
Connection.
5. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 4, it is characterised in that: institute
It states monitoring unit (4) and is provided with 4, the supporting leg (22) is welded under the support rod (21).
6. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 5, it is characterised in that: institute
It states rotating electric machine (24) and the support rod (21) use is bolted, the rotating electric machine (24) and the turntable (25) make
It is connected with spline.
7. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 6, it is characterised in that: institute
It states venthole (30) and is provided with filter cotton (31), the filter cotton in the turntable (25), the venthole (30)
(31) interference fit is used with the venthole (30).
8. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 7, it is characterised in that: institute
It states and is provided with protective cover (26) above turntable (25), the protective cover (26) is made of transparent material, the protective cover
(26) it is connected with the turntable (25) plug.
9. a kind of petroleum works air pressure change wireless automatic alarming device according to claim 8, it is characterised in that: institute
State microprocessor (18) respectively with the display screen (3), the first transceiver (19), first bright lamp (11), described raise
Sound device (12), the remote-control lever (6) and the numeric keypad (5) using electrical connection, the second transceiver (28) respectively with institute
State rotating electric machine (24), second bright lamp (29), the baroceptor (32), the buzzer (33) and the camera
(27) radio connection is used using electrical connection, the first transceiver (19) and the second transceiver (28).
10. a kind of petroleum works application method of air pressure change wireless automatic alarming device, it is characterised in that: specific to use
Method including the following steps:
A, the electric cabinet (1) is pushed to monitoring position, stepped on the positioning plate (20), the positioning plate (20) is by the shifting
Dynamic idler wheel (10) are stuck, and the electric cabinet (1) is fixed, and first cable (8) connected power grid, by the monitoring unit
(4) it is moved to monitoring field, second cable (23) is connected into power grid.
B, air pressure alarm limit value is inputted the microprocessor (18) by pressing the numeric keypad (5) by staff, described
The live pressure information of acquisition is passed to the first transceiver by the second transceiver (28) by baroceptor (32)
(19), the first transceiver (19) passes information to the microprocessor (18).
C, the microprocessor (18) judges by analysis, and when air pressure numerical value is more than limit value, first bright lamp (11) is lighted,
Loudspeaker (12) sounding alarm, the microprocessor (18) control second transmitting-receiving by the first transceiver (19)
Device (28) lights second bright lamp (29), buzzer (33) alarm.
D, acquired image is passed through the second transceiver (28) and the first transceiver (19) by the camera (27)
It passes to the microprocessor (18), the microprocessor (18) shows image on the display screen (3), rotates described distant
Control lever (6), the rotating electric machine (24) drive turntable (25) rotation, and the turntable (25) drives the camera
(27) it rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924891.8A CN109141738A (en) | 2018-08-14 | 2018-08-14 | A kind of petroleum works air pressure change wireless automatic alarming device and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924891.8A CN109141738A (en) | 2018-08-14 | 2018-08-14 | A kind of petroleum works air pressure change wireless automatic alarming device and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109141738A true CN109141738A (en) | 2019-01-04 |
Family
ID=64793091
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810924891.8A Withdrawn CN109141738A (en) | 2018-08-14 | 2018-08-14 | A kind of petroleum works air pressure change wireless automatic alarming device and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505457A (en) * | 2020-11-30 | 2021-03-16 | 九江检安石化工程有限公司 | Data sampling system for explosion-proof petrochemical electrical equipment |
-
2018
- 2018-08-14 CN CN201810924891.8A patent/CN109141738A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505457A (en) * | 2020-11-30 | 2021-03-16 | 九江检安石化工程有限公司 | Data sampling system for explosion-proof petrochemical electrical equipment |
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Application publication date: 20190104 |
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| WW01 | Invention patent application withdrawn after publication |