CN207229881U - A kind of hydraulic pressure cut-off valve remote wireless control device - Google Patents
A kind of hydraulic pressure cut-off valve remote wireless control device Download PDFInfo
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- CN207229881U CN207229881U CN201721243503.7U CN201721243503U CN207229881U CN 207229881 U CN207229881 U CN 207229881U CN 201721243503 U CN201721243503 U CN 201721243503U CN 207229881 U CN207229881 U CN 207229881U
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Abstract
It the utility model is related to and adopt defeated pipeline safety protection facility,More particularly to a kind of hydraulic pressure cut-off valve remote wireless control device,Including long-range executing agency and control terminal,The long-range executing agency is connected with the hydraulic control system of hydraulic pressure cut-off valve,The control terminal is connected with the long-range executing agency wireless communication,The unlatching and/or closing of hydraulic pressure cut-off valve described in wireless control,By setting long-range executing agency in the certain distance apart from hydraulic pressure cut-off valve,Acted by long-range actuating mechanism controls hydraulic control system,Staff can also be realized the emergency cut-off of block valve close to hydraulic pressure cut-off valve,At the same time,Control terminal is set to be connected with long-range executing agency's wireless communication,So that can be by wireless communication signals from the action compared with the long-range executing agency of far distance controlled,And then control the emergency cut-off of block valve,Realize that the remote wireless control of hydraulic pressure cut-off valve is closed,Block source of the gas,Accident sprawling is avoided to cause damages.
Description
Technical field
It the utility model is related to and adopt defeated pipeline safety protection facility, more particularly to a kind of hydraulic pressure cut-off valve long distance wireless control
Device processed.
Background technology
Hydraulic pressure cut-off valve is common emergency shutdown valve on long distance pipeline, as shown in Figure 1, hydraulic pressure cut-off valve a2 mainly by
Drive cylinder, flat gate valve and actuating device of the spring are composed, and the pressure oil provided by hydraulic control system a1, which changes, to be driven
Dynamic oil cylinder realizes the unlatching and/or closing of hydraulic pressure cut-off valve a2, when pipeline distribution pressure exceedes to the thrust of actuating device of the spring
When setting pressure, station pipeline because rupturing leakage decompression less than setting pressure or fire alarm occurring, hydraulic control system a1 is promptly controlled
Pressing pressure oil returns to fuel reserve tank, closes hydraulic pressure cut-off valve a2 using the spring force of actuating device of the spring, source of the gas is blocked, so as to protect
Airfield equipment, prevents major accident from occurring or spreading.
But when generation leakage in hydraulic control system failure or outer well tube line and catch fire, pipeline pressure caused by leakage rate
When power reduction is not enough to close hydraulic pressure cut-off valve a2, the automatic break-in facility of hydraulic pressure cut-off valve a2 will fail, and current hydraulic pressure
Block valve does not have the function that long distance wireless blocks, and is typically only capable to rush for on-site manual control hydraulic control by staff at this time
Urgent on system a1 blocks switch, realizes the closing of hydraulic pressure cut-off valve a2, still, when staff apart from station farther out when,
The time to chopping that scene will be delayed pipeline source of the gas is rushed for, be easy to cause accident sprawling, influences the normal operation of station other equipment.
In conclusion solve current hydraulic pressure cut-off valve there is an urgent need for a kind of technical solution at present and do not have long distance wireless section
Disconnected function, is easily delayed the time to chopping of pipeline source of the gas, the technical problem for the sprawling that causes the accident.
Utility model content
The purpose of this utility model is that：Do not have the function that long distance wireless blocks for current hydraulic pressure cut-off valve, hold
The easily time to chopping of delay pipeline source of the gas, a kind of technical problem for the sprawling that causes the accident, there is provided hydraulic pressure cut-off valve long distance wireless
Control device.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of hydraulic pressure cut-off valve remote wireless control device, including long-range executing agency and control terminal, it is described remotely to hold
Row mechanism is connected with the hydraulic control system of hydraulic pressure cut-off valve, and the control terminal connects with the long-range executing agency wireless communication
Connect, the unlatching and/or closing of hydraulic pressure cut-off valve described in wireless control.
A kind of hydraulic pressure cut-off valve remote wireless control device of the utility model, by setting long-range executing agency in distance
In the certain distance of hydraulic pressure cut-off valve, acted by long-range actuating mechanism controls hydraulic control system, staff is leaned on
Nearly hydraulic pressure cut-off valve can also realize the emergency cut-off of block valve, meanwhile, control terminal and long-range executing agency's channel radio are set
Letter connection so that can be by wireless communication signals from the action compared with the long-range executing agency of far distance controlled, and then control block valve
Emergency cut-off, realize hydraulic pressure cut-off valve remote wireless control close, block source of the gas, avoid accident sprawling cause damages.
Preferably, the long-range executing agency includes explosion-proof cabinet, control valve is provided with the explosion-proof cabinet, it is described
Control valve one end is connected by hydraulic oil pipe with the drive cylinder of hydraulic pressure cut-off valve, and the other end is connected by hydraulic oil pipe and fuel reserve tank
It is logical.The drive cylinder of hydraulic pressure cut-off valve is connected with fuel reserve tank by hydraulic oil pipe so that when needing emergency cut-off hydraulic pressure cut-off
During valve, it is only necessary to which opening controlling valve, makes the hydraulic oil in drive cylinder directly return to fuel reserve tank by control valve, structure is simpler
It is single, simultaneously as the longer hydraulic oil pipe of length can be set to be used to connect drive cylinder and fuel reserve tank, made according to actual conditions
Obtaining more conveniently can be arranged on the explosion-proof cabinet that set control valve apart from hydraulic pressure cut-off valve remote position, facilitate staff
In duty room or other farther long-range emergency cut-offs for realizing block valve in place, source of the gas is blocked, avoids accident from spreading, further side
Just the remote control of hydraulic pressure cut-off valve.
Preferably, the valve control machine for controlling the control valve to open and/or close is provided with the anti-explosion cabinet body
Structure, the Fa Kong mechanisms are communicated to connect with the control terminal.Set Fa Kong mechanisms to be communicated to connect with control terminal, conveniently pass through
The wireless signal driving valve control mechanism action that control terminal is sent, and then easier realize the unlatching and/or closing of control valve.
Preferably, the Fa Kong mechanisms include signal receiver and for driving the control valve to open and/or close
Driving motor, the signal receiver and control terminal communicate to connect.Set driving drive and control of electric machine valve unlatching and/or
Close, structure is simpler, when signal receiver receives the action signal of control terminal transmission, drives electric motor starting, control
The unlatching and/or closing of the control valve.
Preferably, the signal receiver is the signal receiving assembly of intercom, the control terminal is intercom
Signal transmission component.The signal receiving assembly of intercom is provided as the in-house signal receiver of valve control, structure is simpler,
Cost is relatively inexpensive so that staff can easier by the unlatching of control valve described in intercom remote wireless control and/or
Close, and then control the emergency cut-off of station scene hydraulic pressure cut-off valve, further conveniently realize the long-range nothing of hydraulic pressure cut-off valve
Line traffic control, stablizes independent communication relatively simultaneously as having between the signal transmission component and signal receiving assembly of intercom
Frequency, it is not easy to which other wireless signals are disturbed by the external world so that each hydraulic pressure cut-off valve corresponds to independent signal frequency, keeps away
Exempt from, when setting multiple control valves, signal interference occur between each control valve, cause blocking by mistake for hydraulic pressure cut-off valve.
Preferably, including power supply unit, the power supply unit is electrically connected with the driving motor.It is single by setting
Power supply unit provides operation power for Fa Kong mechanisms, and valve control failure mechanisms when avoiding the alternating current from powering off, ensure that Fa Kong mechanisms locate all the time
In treating working status, rapid action when ensureing to receive truncated signal, realizes that the long-range of hydraulic pressure cut-off valve is quickly blocked.
Preferably, the power supply unit includes solar panels and electric energy storage device, the electric energy storage device and the driving electricity
Mechatronics.The power supply unit being made of solar panels and electric energy storage device is set, reduces energy consumption, and ensure that and grown in alternating current
Under time powering-off state, the lasting normal operation of Fa Kong mechanisms.
Preferably, further including long-range pressue device, the long-range pressue device is connected with the fuel reserve tank, described long-range
Pressue device is used for the drive cylinder for driving hydraulic oil in the fuel reserve tank to flow to hydraulic pressure cut-off valve from fuel reserve tank.Long-range add, is set
Pressure device so that after troubleshooting, staff can pressurize hydraulic oil in fuel reserve tank by long-range pressue device, driving storage
Hydraulic oil enters the drive cylinder of hydraulic pressure cut-off valve after control valve in fuel tank, the reset of hydraulic pressure cut-off valve is realized, due to whole
A process utilizes hydraulic drive, and structure is simpler, easier can realize hydraulic pressure cut-off in the position away from hydraulic pressure cut-off valve
The reset of valve.
Preferably, further including pressure-detecting device, the pressure-detecting device is removably arranged on control valve and drive
On pressure oil pipe between dynamic oil cylinder.Pressure-detecting device, real-time monitoring driving oil are set between control valve and drive cylinder
The pressure condition of hydraulic oil in cylinder, avoids the accident of the hydraulic pressure cut-off valve caused by hydraulic fluid leak etc. from blocking, influences station
The normal operation of equipment, meanwhile, the pressure value that can be detected according to pressure-detecting device judges whether hydraulic pressure cut-off valve is complete
Contract fully, or whether occur pressure reduction situation during normal work, staff is investigated failure in time, generation of preventing accident,
It is further ensured that the smooth of hydraulic pressure cut-off valve is closed and worked normally.
Preferably, further including warning device, the warning device is communicated to connect with the pressure-detecting device.Report is set
Alarm device is connected with pressure-detecting device so that when the pressure that pressure-detecting device detects is less than setting value or higher than setting value
When, alarm is sent in time, notifies staff, staff is found failure in time and is excluded in time, avoids accident from spreading
Cause to damage.
Preferably, the warning device includes acoustic-optic alarm and/or sound broadcasting device.Sound-light alarm mould is set
Block easier can notify staff by alarm song and flash of light, staff is known the pressure letter in hydraulic oil pipe in time
Breath, sets voice broadcast module, the numbering of supporting corresponding each block valve so that staff can accurately know that generation is cut
The position of disconnected block valve, is handled accordingly in time, is reduced the accident treatment time, is avoided causing damages.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：
1st, by setting long-range executing agency to pass through long-range actuating mechanism controls in hydraulic pressure cut-off valve certain distance
Hydraulic control system acts, and staff can also be realized the emergency cut-off of block valve close to hydraulic pressure cut-off valve；
2nd, control terminal is set to be connected with long-range executing agency's wireless communication so that can be by wireless communication signals from farther out
The action of the long-range executing agency of distance controlling, and then the emergency cut-off of block valve is controlled, realize the long distance wireless of hydraulic pressure cut-off valve
Control is closed, and blocks source of the gas, avoids accident sprawling from causing damages；
The beneficial effect of the utility model other embodiment is：
1st, using intercom signal receiving assembly as the in-house signal receiver of valve control, structure is simpler, and cost is more just
Preferably so that staff can easier by the unlatching and/or closing of control valve described in intercom remote wireless control, and then
The emergency cut-off of station scene hydraulic pressure cut-off valve is controlled, further conveniently realizes the remote wireless control of hydraulic pressure cut-off valve；
2nd, independent communication frequency is stablized relatively due to having between intercom signal transmission component and signal receiving assembly,
It is not susceptible to the interference of other extraneous wireless signals so that each hydraulic pressure cut-off valve corresponds to independent signal frequency, avoids working as
When multiple control valves are set, there is signal interference between each control valve, cause blocking by mistake for hydraulic pressure cut-off valve.
Brief description of the drawings
Fig. 1 is the structure diagram of existing hydraulic pressure cut-off valve；
Fig. 2 is a kind of structure diagram of hydraulic pressure cut-off valve remote wireless control device of embodiment 1；
Fig. 3 is the structure diagram of long-range executing agency described in embodiment 1；
Fig. 4 is the structure diagram at another visual angles of Fig. 3；
Fig. 5 is a kind of structure diagram of hydraulic pressure cut-off valve remote wireless control device of embodiment 2；
Fig. 6 is the structure diagram of long-range executing agency described in embodiment 2；
Fig. 7 is the structure diagram at another visual angles of Fig. 6.
Reference numeral
A1- hydraulic control systems, a2- hydraulic pressure cut-off valves, the long-range executing agencies of 1-, 11- control valves, 12- Fa Kong mechanisms,
121- signal receivers, 122- driving motors, 2- control terminals, the explosion-proof cabinets of 3-, 4- hydraulic oil pipes, 5- power supply units, 51- is too
Positive energy plate, 52- electric energy storage devices, 6- pressure-detecting devices, 7- warning devices, the long-range pressue devices of 8-.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and specifically
Embodiment, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only solving
The utility model is released, is not used to limit the utility model.
Embodiment 1
As in Figure 2-4, a kind of hydraulic pressure cut-off valve remote wireless control device, including long-range executing agency 1 and control are eventually
End 2, the long-range executing agency 1 be connecteds with the hydraulic control system a1 of hydraulic pressure cut-off valve a2, the control terminal 2 and it is described far
The 1 wireless communication connection of journey executing agency, the unlatching and/or closing of hydraulic pressure cut-off valve a2 described in wireless control.
A kind of hydraulic pressure cut-off valve remote wireless control device of the present embodiment, by setting long-range executing agency 1 in distance
In the certain distance of hydraulic pressure cut-off valve a2, control hydraulic control system a1 to act by long-range executing agency 1, be not required to staff
The emergency cut-off of block valve can also be realized close to hydraulic pressure cut-off valve a2, meanwhile, control terminal 2 and long-range executing agency are set
1 wireless communication connects so that can be by wireless communication signals from the action compared with the long-range executing agency 1 of far distance controlled, and then control
The emergency cut-off of block valve processed, realizes that the remote wireless control of hydraulic pressure cut-off valve a2 is closed, blocks source of the gas, avoid accident sprawling from making
Into loss.
Preferably, the long-range executing agency 1 includes explosion-proof cabinet 3, and 11 He of control valve is provided with the explosion-proof cabinet 3
For the Fa Kong mechanisms 12 for controlling the control valve 11 to open and/or close, described 12 one end of control valve by hydraulic oil pipe 4 with
The drive cylinder connection of hydraulic pressure cut-off valve a2, the other end are connected by hydraulic oil pipe 4 with fuel reserve tank, and the Fa Kong mechanisms 12 include
Signal receiver 121 and the driving motor 122 for driving the control valve 11 to open and/or close, the signal receiver
121 communicate to connect with control terminal 2.The drive cylinder of hydraulic pressure cut-off valve a2 is connected with fuel reserve tank by hydraulic oil pipe 4 so that
When needing emergency cut-off hydraulic pressure cut-off valve a2, it is only necessary to which opening controlling valve 11, makes the hydraulic oil in drive cylinder directly pass through
Control valve 11 returns to fuel reserve tank, makes hydraulic pressure cut-off valve a2 emergency cut-offs, and structure is simpler, meanwhile, setting communicates with control terminal 2
The Fa Kong mechanisms 12 of connection control the unlatching and/or closing of the control valve 11, when signal receiver 121 receives control terminal
During the action signal of 2 transmissions, the driving motor 122 can be easier controlled to rotate, and then control opening for the control valve 11
Open and/or close, the unlatching and/or closing for making control valve 11 can realize that control mode is simpler by wireless signal, realize liquid
The remote wireless control of block valve a2 is pressed, in addition, according to actual conditions the longer hydraulic oil pipe 4 of length can be set to be used to connect
Drive cylinder and fuel reserve tank so that more conveniently the explosion-proof cabinet 3 for setting control valve 11 can be arranged on apart from hydraulic pressure cut-off valve
A2 remote positions, facilitate staff remotely to realize emergency cut-offs of block valve in duty room or other farther places, block
Source of the gas, avoids accident from spreading, and further facilitates the remote control of hydraulic pressure cut-off valve a2.
Preferably, the signal receiver 121 is the signal receiving assembly of intercom, and the control terminal 2 is intercom
Signal transmission component.The signal receiver 121 signal receiving assembly of intercom being provided as in Fa Kong mechanisms 12, structure
Relatively simple, cost is relatively inexpensive so that staff can easier pass through control valve 11 described in intercom remote wireless control
Open and/or close, and then control the emergency cut-off of station scene hydraulic pressure cut-off valve a2, further conveniently realize hydraulic pressure cut-off
The remote wireless control of valve a2, simultaneously as having between the signal transmission component and signal receiving assembly of intercom relatively steady
Fixed independent communication frequency, it is not easy to which other wireless signals are disturbed by the external world so that each hydraulic pressure cut-off valve a2 corresponds to only
Vertical signal frequency, avoids, when setting multiple control valves 11, signal interference occur between each control valve 11, causes hydraulic pressure to cut
Disconnected valve a2's blocks by mistake.
Preferably, power supply unit 5 is further included, the power supply unit 5 includes solar panels 51 and electric energy storage device 52, the storage
Electric equipment 52 is electrically connected with the driving motor 122.By set be made of solar panels 51 and electric energy storage device 52 it is single
Power supply unit 5 provides operation power for Fa Kong mechanisms 12, reduces energy consumption, meanwhile, Fa Kong mechanisms 12 when avoiding the alternating current from powering off
Failure, ensures Fa Kong mechanisms 12 all the time in working status is treated, Fa Kong mechanisms 12 is rapid dynamic when ensureing to receive truncated signal
Make, realize that the long-range of hydraulic pressure cut-off valve a2 is quickly blocked.
Preferably, pressure-detecting device 6 is further included, the pressure-detecting device 6 is removably arranged on 11 He of control valve
On pressure oil pipe 4 between drive cylinder.Pressure-detecting device 6 is set between control valve 11 and drive cylinder, in real time monitoring
The pressure condition of hydraulic oil in drive cylinder, avoids the accident of the hydraulic pressure cut-off valve a2 caused by hydraulic fluid leak etc. from blocking,
The normal operation of airfield equipment is influenced, meanwhile, hydraulic pressure cut-off valve a2 can be judged according to the pressure value that pressure-detecting device 6 detects
Whether completely close, or whether occurred pressure during normal work to reduce situation, staff is investigated failure in time, prevent
Accident occurs, and is further ensured that the smooth of hydraulic pressure cut-off valve a2 is closed and worked normally.
Preferably, warning device 7 is further included, the warning device 7 includes acoustic-optic alarm and/or voice broadcast fills
Put, the warning device 7 is communicated to connect with the pressure-detecting device 6.Warning device 7 is set to be connected with pressure-detecting device 6,
So that when pressure-detecting device 6 detects pressure in hydraulic oil pipe 4 less than setting value or higher than setting value, pass through police in time
Report sound and/or flash of light and/or voice broadcast notify staff so that staff can accurately know the block valve blocked
Position, handled accordingly in time, reduce the accident treatment time, avoid causing damages.
Embodiment 2
As illustrated in figs. 5-7, a kind of structure of hydraulic pressure cut-off valve remote wireless control device of this implementation and 1 phase of embodiment
Together, difference lies in：Long-range pressue device 8 is further included, the long-range pressue device 8 is connected with the fuel reserve tank, described remotely to add
Pressure device 8 is used for the drive cylinder for driving hydraulic oil in the fuel reserve tank to flow to hydraulic pressure cut-off valve a2 from fuel reserve tank.
A kind of hydraulic pressure cut-off valve remote wireless control device of the present embodiment, by setting long-range pressue device 8 so that
After troubleshooting, staff can pressurize hydraulic oil in fuel reserve tank by long-range pressue device 8, drive hydraulic oil in fuel reserve tank
Enter the drive cylinder of hydraulic pressure cut-off valve a2 after control valve 11, the reset of hydraulic pressure cut-off valve a2 is realized, due to whole process
Hydraulic drive is utilized, structure is simpler, and the oil pipe of appropriate length can be selected according to actual conditions so that staff can relatively hold
The easy monitoring room or other positions in hydraulic pressure cut-off valve a2 certain distances realizes the reset of hydraulic pressure cut-off valve a2.
Preferably, the long-range pressue device 8 is manual pressure device and/or electric pressing.Manually or electrically plus
The supporting setting of pressure device so that different types of long-range pressue device 8 can be set according to field condition, further facilitate hydraulic pressure
The remote reset of block valve a2.
Above example only not limits the described technical solution of the utility model to illustrate the utility model, to the greatest extent
Pipe this specification has been carried out being described in detail with reference to the above embodiments to the utility model, but the utility model is not limited to
Above-mentioned embodiment, thus it is any modify to the utility model or equivalent substitution, and all do not depart from utility model
Spirit and scope technical solution and its improvement, it should all cover in the right of the utility model.
Claims (9)
- A kind of 1. hydraulic pressure cut-off valve remote wireless control device, it is characterised in that：Including long-range executing agency（1）And control terminal （2）, the long-range executing agency（1）With hydraulic pressure cut-off valve（a2）Hydraulic control system（a1）Connection, the control terminal（2） With the long-range executing agency（1）Communication connection, hydraulic pressure cut-off valve described in wireless control（a2）Open and/or close.
- 2. remote wireless control device as claimed in claim 1, it is characterised in that：The long-range executing agency（1）Including anti- Quick-fried cabinet（3）, the explosion-proof cabinet（3）On be provided with control valve（11）, the control valve（11）One end passes through hydraulic oil pipe（4） With hydraulic pressure cut-off valve（a2）Drive cylinder connection, the other end passes through hydraulic oil pipe（4）Connected with fuel reserve tank.
- 3. remote wireless control device as claimed in claim 2, it is characterised in that：Further include long-range pressue device（8）, it is described Long-range pressue device（8）Connected with the fuel reserve tank, the long-range pressue device（8）For driving hydraulic oil in the fuel reserve tank Hydraulic pressure cut-off valve is flowed to from fuel reserve tank（a2）Drive cylinder.
- 4. remote wireless control device as claimed in claim 3, it is characterised in that：The explosion-proof cabinet（3）Inside it is additionally provided with For controlling the control valve（11）The Fa Kong mechanisms opened and/or closed（12）, the Fa Kong mechanisms（12）With the control Terminal（2）Communication connection.
- 5. remote wireless control device as claimed in claim 4, it is characterised in that：The Fa Kong mechanisms（12）Connect including signal Receive device（121）With for driving the control valve（11）The driving motor opened and/or closed（122）, the signal receiver （121）With control terminal（2）Communication connection.
- 6. remote wireless control device as claimed in claim 5, it is characterised in that：The signal receiver（121）For intercommunication The signal receiving assembly of machine, the control terminal（2）For the signal transmission component of intercom.
- 7. remote wireless control device as claimed in claim 6, it is characterised in that：Further include power supply unit（5）, the power supply Device（5）With the driving motor（122）It is electrically connected.
- 8. the remote wireless control device as described in claim 2-7 any one, it is characterised in that：Further include pressure detecting dress Put（6）, the pressure-detecting device（6）Removably it is arranged on control valve（11）Hydraulic oil pipe between drive cylinder（4） On.
- 9. remote wireless control device as claimed in claim 8, it is characterised in that：Further include warning device（7）, the alarm Device（7）With the pressure-detecting device（6）Communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243503.7U CN207229881U (en) | 2017-09-26 | 2017-09-26 | A kind of hydraulic pressure cut-off valve remote wireless control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243503.7U CN207229881U (en) | 2017-09-26 | 2017-09-26 | A kind of hydraulic pressure cut-off valve remote wireless control device |
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| Publication Number | Publication Date |
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| CN207229881U true CN207229881U (en) | 2018-04-13 |
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ID=61864136
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721243503.7U Active CN207229881U (en) | 2017-09-26 | 2017-09-26 | A kind of hydraulic pressure cut-off valve remote wireless control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874090A (en) * | 2018-09-04 | 2020-03-10 | 中国石油天然气股份有限公司 | Oil gas production data monitoring system and method |
-
2017
- 2017-09-26 CN CN201721243503.7U patent/CN207229881U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874090A (en) * | 2018-09-04 | 2020-03-10 | 中国石油天然气股份有限公司 | Oil gas production data monitoring system and method |
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