CN205743854U - The alarm and protection system of oil rig - Google Patents
The alarm and protection system of oil rig Download PDFInfo
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- CN205743854U CN205743854U CN201620591267.7U CN201620591267U CN205743854U CN 205743854 U CN205743854 U CN 205743854U CN 201620591267 U CN201620591267 U CN 201620591267U CN 205743854 U CN205743854 U CN 205743854U
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- auxiliary reclay
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Abstract
This utility model relates to the alarm and protection system of a kind of oil rig; major loop includes main breaker, the normally open contact of the first A.C. contactor and the pumping-unit motor being in series; major loop is provided with voltage protection relay; control loop is provided with between current protector, and phase line and zero line and is sequentially connected in series stop button, start button, the normally closed interlock of the first auxiliary reclay, the normally closed interlock of voltage protection relay and the coil of the first A.C. contactor；It is connected between phase line and zero line after the normally open contact of current protector and the coils connected in series of the first auxiliary reclay.Major loop is connected with pipeline heater also by the normally open contact of the second A.C. contactor；Connect between phase line and zero line after the coil of the second A.C. contactor and the normally open contact series connection of the 3rd auxiliary reclay；It is connected between phase line and zero line after the coil of the 3rd auxiliary reclay and the 3rd normally open contact series connection of the first A.C. contactor.This system can reliably protect pumping-unit motor and pipeline heater.
Description
Technical field
This utility model relates to the alarm and protection system of a kind of oil rig, is mainly used in motor, pipeline heater
Deng fault alarm and the power-off protection of pump machine kind equipment, belong to oil exploitation control circuit technical field.
Background technology
Current most widely used beam pumping unit oil pumping system is made up of three parts: one is the beam type of above ground portion
Oil pumper, is generally directly dragged by ordinary ac asynchronous motor；Beam pumping unit, as a frame balance, is hinged in the middle part of walking beam
Cantilever tip, one end of walking beam connects caput Equi Asini, and caput Equi Asini is connected with polished rod, sucker rod by rope pigtail, and caput Equi Asini undertakes oil pumping and carries
Lotus；The other end of walking beam is connected with toggle and is provided with counterweight load.Two is the oil well pump of underground part, oil pumping
Pump includes inlet valve, pump barrel, plunger and dump valve etc., and it is suspended on oil pipe lower end in sleeve pipe.Three be couple ground oil pumper and
The mid portion rod string of oil well pump, it is made up of sucker rod and the box cupling of one or more diameters.During work, crank connecting link
Mechanism affects one end of walking beam to swing up and down by connecting rod, and the caput Equi Asini of the walking beam other end also moves up and down, and caput Equi Asini is through rope pigtail, light
Bar and sucker rod drive the plunger of downhole pump to move up and down, thus constantly the crude oil in well are extracted out pit shaft, deliver to
Ground.
Owing to former oil viscosity is high, need to use pipeline heater that crude oil is heated, to reduce viscosity of crude, prevent
Wax deposition in oil pipe, improves the mobility of crude oil, reaches the purpose of oil well production increasing potentiation.
The pump machine kind equipments such as the motor of oil extraction system, pipeline heater be susceptible to during production run phase shortage,
Short circuit, overload, overvoltage, under-voltage, three-phase imbalance, motor running temperature cross high fault, need and alarm also does power-off
Protection；Thermic load because needing when pipeline heater heats is big, and in use, meeting is because supply voltage is abnormal, electric current is excessive
Or too small, electric current phase shortage, three-phase current unbalance etc. can cause pipeline heater to damage.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, it is provided that the warning of a kind of oil rig
Protection system, transshipping, overvoltage, the fault such as under-voltage, phase shortage, three-phase imbalance time, can reliably protect oil pumping electromechanics
Machine.
For solving above technical problem, the alarm and protection system of a kind of oil rig of the present utility model, including major loop
With control loop, main breaker QS1 that described major loop includes being sequentially connected in series, the first of the first A.C. contactor KM1 normally opened touch
Head KM11 and pumping-unit motor M, major loop is connected by the control circuit of fuse FU1 ~ FU3 and voltage protection relay YA,
Control circuit breaker QS2 is installed, in the phase line in described control loop between phase line and the zero line in described control loop successively
Be in series with stop button SB1, start button SB2, the normally closed interlock KA11 of the first auxiliary reclay KA1, described voltage protection continue
The normally closed interlock YA11 of electrical equipment and the coil of the first A.C. contactor KM1, second normally open contact of the first A.C. contactor KM1
KM12 is connected in parallel on the two ends of start button SB2；The control circuit of current protector DA is connected to control phase line and the zero line in loop
Between, it is connected to after the coils connected in series of the normally open contact DA1 of described current protector and described first auxiliary reclay KA1 control
Between phase line and the zero line in loop.
Relative to prior art, this utility model achieves following beneficial effect: closes main breaker QS1 and controls loop
Circuit breaker Q S2, presses start button SB2, and the coil of the first A.C. contactor KM1 obtains electric, the second of the first A.C. contactor KM1
Normally open contact KM12 closes self-insurance, and the first normally open contact KM11 Guan Bi of the first A.C. contactor KM1, pumping-unit motor M obtains electric
Run；
When faults such as major loop generation overvoltage, under-voltage, phase shortage, three-phase imbalances, voltage protection relay YA's is normally closed
Contact YA11 disconnects, the coil losing electricity of the first A.C. contactor KM1, the first normally open contact KM11 of the first A.C. contactor KM1
Disconnecting, pumping-unit motor M is out of service；
During pumping-unit motor M overload, when the normally open contact DA1 of current protector DA closes, the first auxiliary reclay KA1's
Coil obtains electric, and the normally closed interlock KA11 of the first auxiliary reclay KA1 disconnects, the coil losing electricity of the first A.C. contactor KM1, and first
The first normally open contact KM11 of A.C. contactor KM1 disconnects, and pumping-unit motor M is out of service.
As improvement of the present utility model, major loop is also by the first normally open contact KM21 of the second A.C. contactor KM2
It is connected with pipeline heater GR；The coil of the second A.C. contactor KM2 and the 3rd normally open contact of the 3rd auxiliary reclay KA3
It is connected to after KA33 series connection between phase line and the zero line in control loop；The coil of the 3rd auxiliary reclay KA3 is handed over described first
It is connected to after the 3rd normally open contact KM13 series connection of stream catalyst KM1 between phase line and the zero line in control loop.When the first exchange
When the coil of catalyst KM1 obtains electric, the 3rd normally open contact KM13 Guan Bi of the first A.C. contactor KM1, the 3rd auxiliary reclay
The coil of KA3 obtains electric, and the 3rd normally open contact KA33 Guan Bi of the 3rd auxiliary reclay KA3 makes the line of the second A.C. contactor KM2
Enclosing electric, the first normally open contact KM21 Guan Bi of the second A.C. contactor KM2, pipeline heater GR heats.When first hands over
When flowing the coil losing electricity of catalyst KM1, the 3rd normally open contact KM13 of the first A.C. contactor KM1 disconnects, the 3rd middle relay
The coil losing electricity of device KA3, the 3rd normally open contact KA33 of the 3rd auxiliary reclay KA3 disconnects and makes the second A.C. contactor KM2's
Coil losing electricity, the first normally open contact KM21 of the second A.C. contactor KM2 disconnects, and pipeline heater GR stops heating.
As improvement of the present utility model, first normally closed interlock KA21 and the time relay of the second auxiliary reclay KA2
Being connected to after the coils connected in series of KT1 between phase line and the zero line in control loop, the timing closing of described time relay KT1 is normally opened
It is connected to after the coils connected in series of contact KT11 and the second auxiliary reclay KA2 between phase line and the zero line in control loop, in second
Between the timing closing normally open contact KT11 of the second normally open contact KA22 and described time relay KT1 of relay K A2 be in parallel；
The the 3rd normal of the second auxiliary reclay KA2 it is in series with between the control circuit of described current protector DA and the phase line controlling loop
Open contact KA23.Close control circuit breaker QS2, and the coil of time relay KT1 obtains electric, the time delay of time relay KT1
Guan Bi normally open contact KT11 time delay closed after 5 ~ 10 seconds, and the coil of the second auxiliary reclay KA2 obtains electric, the second auxiliary reclay
The second normally open contact KA22 of KA2 closes self-insurance, and the first normally closed interlock KA21 of the second auxiliary reclay KA2 disconnects, and the time continues
The coil losing electricity of electrical equipment KT1, the 3rd normally open contact KA23 Guan Bi of the second auxiliary reclay KA2, make current protector DA put into
Run, it is to avoid instantaneous starting electric current bigger when starting for pumping-unit motor M causes current protector DA to burn.
As improvement of the present utility model, the control circuit of the first temperature controller ST1 and the second temperature controller ST2 is divided
It is not connected between described second auxiliary reclay KA2 the 3rd normally open contact KA23 and zero line；First temperature controller ST1's is normal
Open contact is in parallel with the normally open contact DA1 of described current protector；The normally open contact of the second temperature controller ST2 is connected on
Between 3rd normally open contact KA33 and the coil of the second A.C. contactor KM2 of three auxiliary reclay KA3.First temperature controller
The temperature of ST1 monitoring pumping-unit motor M, the oil temperature in the second temperature controller ST2 monitoring pipeline heater GR exit；Work as oil pumping
When the temperature rise of dynamo-electric machine M is excessive, the normally open contact Guan Bi of the first temperature controller ST1, the coil of the first auxiliary reclay KA1 obtains
Electricity, the normally closed interlock KA11 of the first auxiliary reclay KA1 disconnects, the coil losing electricity of the first A.C. contactor KM1, and the first exchange connects
The first normally open contact KM11 of tentaculum KM1 disconnects, and pumping-unit motor M is out of service.
When the oil temperature in pipeline heater GR exit is less than setting value, the normally open contact of the second temperature controller ST2 closes
Closing, the coil of the second A.C. contactor KM2 could obtain electric, the first normally open contact KM21 Guan Bi of the second A.C. contactor KM2, pipe
Channel heater GR heats.When the oil temperature in pipeline heater GR exit is higher than setting value, the second temperature controller ST2's
Normally open contact disconnects, and the coil of the second A.C. contactor KM2 can not obtain electric, and pipeline heater GR does not devotes oneself to work.
As improvement of the present utility model, the normally open contact KA12 of described first auxiliary reclay KA1 connects with electric bell DL
After be connected to control loop phase line and zero line between.When pumping-unit motor M transships, when the normally open contact of current protector DA
DA1 closes, and the coil of the first auxiliary reclay KA1 obtains electric, makes the coil losing electricity of the first A.C. contactor KM1, pumping-unit motor M
Out of service, the normally open contact KA12 Guan Bi of the first auxiliary reclay KA1 simultaneously, electric bell DL sends alarm.
As improvement of the present utility model, the normally open contact YA12 of described voltage protection relay continues in the middle of described first
The normally open contact KA12 of electrical equipment KA1 is in parallel.When the temperature rise of pumping-unit motor M is excessive, the coil of the first auxiliary reclay KA1
Obtaining electric, make the coil losing electricity of the first A.C. contactor KM1, pumping-unit motor M is out of service, simultaneously the first auxiliary reclay KA1
Normally open contact KA12 Guan Bi, electric bell DL sends alarm.
As improvement of the present utility model, the first normally open contact KA31 and green light HL1 of described 3rd auxiliary reclay KA3
It is connected to after series connection between phase line and the zero line in control loop, the second normally closed interlock KA32 of described 3rd auxiliary reclay KA3
It is connected to after connecting with red light HL2 between phase line and the zero line in control loop.When the coil of the first A.C. contactor KM1 obtains electric
Time, pumping-unit motor M puts into operation, the 3rd normally open contact KM13 Guan Bi of the first A.C. contactor KM1, the 3rd auxiliary reclay
The coil of KA3 obtains electric, and the first normally open contact KA31 Guan Bi of the 3rd auxiliary reclay KA3, green light HL1 lights；Continue in the middle of 3rd
The second normally closed interlock KA32 of electrical equipment KA3 disconnects, and red light HL2 lights.
Accompanying drawing explanation
Being described in further detail this utility model with detailed description of the invention below in conjunction with the accompanying drawings, accompanying drawing only provides ginseng
Examine and use is described, being not used to limit this utility model.
Fig. 1 is the schematic diagram of the alarm and protection system of this utility model oil rig.
In figure: QS1. main breaker；QS2. circuit breaker is controlled；FU1 ~ FU3. fuse；YA. voltage protection relay
Device；DA. current protector；GR. pipeline heater；SB1. stop button；SB2. start button；DL. electric bell；KM1. the first exchange
Catalyst；KM2. the second A.C. contactor；KA1. the first auxiliary reclay；KA2. the second auxiliary reclay；KA3. the 3rd is middle
Relay；KT1. the time relay；ST1. the first temperature controller；ST2. the second temperature controller.
Detailed description of the invention
As it is shown in figure 1, the alarm and protection system of this utility model oil rig includes major loop and controls loop, major loop
Including the main breaker QS1 being sequentially connected in series, the first normally open contact KM11 and pumping-unit motor M of the first A.C. contactor KM1, main
Loop is connected by the control circuit of fuse FU1 ~ FU3 and voltage protection relay YA, controls to be provided with in the phase line in loop
Control circuit breaker QS2, control loop phase line and zero line between be sequentially connected in series stop button SB1, start button SB2,
The normally closed interlock KA11 of the first auxiliary reclay KA1, the normally closed interlock YA11 of voltage protection relay and the first A.C. contactor
The coil of KM1, the second normally open contact KM12 of the first A.C. contactor KM1 is connected in parallel on the two ends of start button SB2；Current protection
The control circuit of device DA is connected between phase line and the zero line in control loop, in the normally open contact DA1 and first of current protector
Between relay K A1 coils connected in series after be connected to control loop phase line and zero line between.
Close main breaker QS1 and control circuit breaker QS2, presses start button SB2, the first A.C. contactor KM1
Coil obtain electric, the second normally open contact KM12 of the first A.C. contactor KM1 closes self-insurance, the of the first A.C. contactor KM1
One normally open contact KM11 Guan Bi, pumping-unit motor M obtains electric operation.
When faults such as major loop generation overvoltage, under-voltage, phase shortage, three-phase imbalances, voltage protection relay YA's is normally closed
Contact YA11 disconnects, the coil losing electricity of the first A.C. contactor KM1, the first normally open contact KM11 of the first A.C. contactor KM1
Disconnecting, pumping-unit motor M is out of service.
During pumping-unit motor M overload, when the normally open contact DA1 of current protector DA closes, the first auxiliary reclay KA1's
Coil obtains electric, and the normally closed interlock KA11 of the first auxiliary reclay KA1 disconnects, the coil losing electricity of the first A.C. contactor KM1, and first
The first normally open contact KM11 of A.C. contactor KM1 disconnects, and pumping-unit motor M is out of service.
Major loop is connected with pipeline heater GR also by the first normally open contact KM21 of the second A.C. contactor KM2；The
It is connected to control back after the coil of two A.C. contactor KM2 and the 3rd normally open contact KA33 series connection of the 3rd auxiliary reclay KA3
Between phase line and the zero line on road；The coil of the 3rd auxiliary reclay KA3 and the 3rd normally open contact of the first A.C. contactor KM1
It is connected to after KM13 series connection between phase line and the zero line in control loop.
When the coil of the first A.C. contactor KM1 obtains electric, the 3rd normally open contact KM13 of the first A.C. contactor KM1 closes
Closing, the coil of the 3rd auxiliary reclay KA3 obtains electric, and the 3rd normally open contact KA33 Guan Bi of the 3rd auxiliary reclay KA3 makes second
The coil of A.C. contactor KM2 obtains electric, the first normally open contact KM21 Guan Bi of the second A.C. contactor KM2, pipeline heater GR
Heat.
When the coil losing electricity of the first A.C. contactor KM1, the 3rd normally open contact KM13 of the first A.C. contactor KM1 breaks
Opening, the coil losing electricity of the 3rd auxiliary reclay KA3, the 3rd normally open contact KA33 of the 3rd auxiliary reclay KA3 disconnects and makes second
The coil losing electricity of A.C. contactor KM2, the first normally open contact KM21 of the second A.C. contactor KM2 disconnects, pipeline heater GR
Stop heating.
The first normally closed interlock KA21 of the second auxiliary reclay KA2 is connected to after the coils connected in series of time relay KT1
Control between phase line and the zero line in loop, the timing closing normally open contact KT11 of time relay KT1 and the second auxiliary reclay
It is connected to after the coils connected in series of KA2 between phase line and the zero line in control loop, second normally open contact of the second auxiliary reclay KA2
The timing closing normally open contact KT11 of KA22 and time relay KT1 is in parallel；The control circuit of current protector DA and control
The 3rd normally open contact KA23 of the second auxiliary reclay KA2 it is in series with between the phase line in loop.
Close control circuit breaker QS2, and the coil of time relay KT1 obtains electric, the timing closing of time relay KT1
Normally open contact KT11 time delay closed after 5 ~ 10 seconds, and the coil of the second auxiliary reclay KA2 obtains electric, the second auxiliary reclay KA2's
Second normally open contact KA22 closes self-insurance, and the first normally closed interlock KA21 of the second auxiliary reclay KA2 disconnects, the time relay
The coil losing electricity of KT1, the 3rd normally open contact KA23 Guan Bi of the second auxiliary reclay KA2, make current protector DA put into operation,
Instantaneous starting electric current bigger when starting for pumping-unit motor M is avoided to cause current protector DA to burn.
The control circuit of the first temperature controller ST1 and the second temperature controller ST2 is connected to the second middle relay
Between device KA2 the 3rd normally open contact KA23 and zero line；The normally open contact of the first temperature controller ST1 is normally opened with current protector
Contact DA1 is in parallel；The normally open contact of the second temperature controller ST2 be connected on the 3rd auxiliary reclay KA3 the 3rd normally opened touch
Between head KA33 and the coil of the second A.C. contactor KM2.
The temperature of the first temperature controller ST1 monitoring pumping-unit motor M, the second temperature controller ST2 monitoring pipeline heating
The oil temperature in device GR exit；When the temperature rise of pumping-unit motor M is excessive, the normally open contact Guan Bi of the first temperature controller ST1, the
The coil of one auxiliary reclay KA1 obtains electric, and the normally closed interlock KA11 of the first auxiliary reclay KA1 disconnects, the first A.C. contactor
The coil losing electricity of KM1, the first normally open contact KM11 of the first A.C. contactor KM1 disconnects, and pumping-unit motor M is out of service.
When the oil temperature in pipeline heater GR exit is less than setting value, the normally open contact of the second temperature controller ST2 closes
Closing, the coil of the second A.C. contactor KM2 could obtain electric, the first normally open contact KM21 Guan Bi of the second A.C. contactor KM2, pipe
Channel heater GR heats.When the oil temperature in pipeline heater GR exit is higher than setting value, the second temperature controller ST2's
Normally open contact disconnects, and the coil of the second A.C. contactor KM2 can not obtain electric, and pipeline heater GR does not devotes oneself to work.
The normally open contact KA12 of the first auxiliary reclay KA1 is connected to control the phase line and zero in loop with electric bell DL after connecting
Between line.When pumping-unit motor M transships, when the normally open contact DA1 of current protector DA closes, the first auxiliary reclay KA1
Coil obtain electric, make the coil losing electricity of the first A.C. contactor KM1, pumping-unit motor M is out of service, simultaneously the first middle relay
The normally open contact KA12 Guan Bi of device KA1, electric bell DL sends alarm.
The normally open contact KA12 of the normally open contact YA12 and the first auxiliary reclay KA1 of voltage protection relay is in parallel.
When the temperature rise of pumping-unit motor M is excessive, the coil of the first auxiliary reclay KA1 obtains electric, makes the line of the first A.C. contactor KM1
Circle dead electricity, pumping-unit motor M is out of service, simultaneously the normally open contact KA12 Guan Bi of the first auxiliary reclay KA1, and electric bell DL sends
Alarm.
The first normally open contact KA31 of the 3rd auxiliary reclay KA3 is connected to control the phase in loop with green light HL1 after connecting
Between line and zero line, the second normally closed interlock KA32 of the 3rd auxiliary reclay KA3 is connected to after connecting with red light HL2 control loop
Phase line and zero line between.When the coil of the first A.C. contactor KM1 obtains electric, pumping-unit motor M puts into operation, the first exchange
The 3rd normally open contact KM13 Guan Bi of catalyst KM1, the coil of the 3rd auxiliary reclay KA3 obtains electric, the 3rd auxiliary reclay KA3
First normally open contact KA31 Guan Bi, green light HL1 lights；The second normally closed interlock KA32 of the 3rd auxiliary reclay KA3 disconnects, red
Lamp HL2 lights.
The foregoing is only the preferable possible embodiments of this utility model, non-therefore limit to patent of the present utility model
Protection domain.In addition to the implementation, this utility model can also have other embodiments.All employing equivalents or equivalence become
Change the technical scheme of formation, all fall within the protection domain of this utility model requirement.This utility model is special without the technology described
Levy and can pass through or use prior art to realize, do not repeat them here.
Claims (7)
1. an alarm and protection system for oil rig, including major loop and control loop, described major loop includes being sequentially connected in series
Main breaker (QS1), first normally open contact (KM11) of the first A.C. contactor (KM1) and pumping-unit motor (M), major loop
It is connected by the control circuit of fuse (FU1 ~ FU3) with voltage protection relay (YA), it is characterised in that: described control loop
Phase line on be provided with control circuit breaker (QS2), be sequentially connected in series stopping between phase line and the zero line in described control loop
Button (SB1), start button (SB2), the normally closed interlock (KA11) of the first auxiliary reclay (KA1), described voltage protection relay
The normally closed interlock (YA11) of device and the coil of the first A.C. contactor (KM1), the second of the first A.C. contactor (KM1) is normally opened tactile
Head (KM12) is connected in parallel on the two ends of start button (SB2)；The control circuit of current protector (DA) is connected to control the phase in loop
Between line and zero line, the normally open contact (DA1) of described current protector and the coils connected in series of described first auxiliary reclay (KA1)
After be connected to control loop phase line and zero line between.
The alarm and protection system of oil rig the most according to claim 1, it is characterised in that: major loop is handed over also by second
First normally open contact (KM21) of stream catalyst (KM2) is connected with pipeline heater (GR)；The line of the second A.C. contactor (KM2)
Circle be connected to after connect with the 3rd normally open contact (KA33) of the 3rd auxiliary reclay (KA3) the control phase line in loop and zero line it
Between；The coil of the 3rd auxiliary reclay (KA3) is connected with the 3rd normally open contact (KM13) of described first A.C. contactor (KM1)
After be connected to control loop phase line and zero line between.
The alarm and protection system of oil rig the most according to claim 1 and 2, it is characterised in that: the second auxiliary reclay
(KA2) be connected to after the coils connected in series of the first normally closed interlock (KA21) and the time relay (KT1) phase line controlling loop with
Between zero line, the timing closing normally open contact (KT11) of the described time relay (KT1) and the line of the second auxiliary reclay (KA2)
It is connected to after circle series connection between phase line and the zero line in control loop, the second normally open contact of the second auxiliary reclay (KA2)
(KA22) the timing closing normally open contact (KT11) with the described time relay (KT1) is in parallel；Described current protector (DA)
Control circuit and the phase line controlling loop between be in series with the 3rd normally open contact (KA23) of the second auxiliary reclay (KA2).
The alarm and protection system of oil rig the most according to claim 3, it is characterised in that: the first temperature controller
(ST1) described second auxiliary reclay (KA2) the 3rd it is connected to the control circuit of the second temperature controller (ST2) normally opened
Between contact (KA23) and zero line；The normally open contact of the first temperature controller (ST1) and the normally open contact of described current protector
(DA1) it is in parallel；It is the 3rd normally opened that the normally open contact of the second temperature controller (ST2) is connected on the 3rd auxiliary reclay (KA3)
Between the coil of contact (KA33) and the second A.C. contactor (KM2).
The alarm and protection system of oil rig the most according to claim 1, it is characterised in that: described first auxiliary reclay
(KA1) normally open contact (KA12) is connected to after connecting with electric bell (DL) between phase line and the zero line in control loop.
The alarm and protection system of oil rig the most according to claim 1, it is characterised in that: described voltage protection relay
The normally open contact (KA12) of normally open contact (YA12) and described first auxiliary reclay (KA1) be in parallel.
The alarm and protection system of oil rig the most according to claim 2, it is characterised in that: described 3rd auxiliary reclay
(KA3) the first normally open contact (KA31) is connected to after connecting with green light (HL1) between phase line and the zero line in control loop, described
Second normally closed interlock (KA32) of the 3rd auxiliary reclay (KA3) is connected to control the phase line in loop with red light (HL2) after connecting
And between zero line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591267.7U CN205743854U (en) | 2016-06-17 | 2016-06-17 | The alarm and protection system of oil rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591267.7U CN205743854U (en) | 2016-06-17 | 2016-06-17 | The alarm and protection system of oil rig |
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| CN205743854U true CN205743854U (en) | 2016-11-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489256A (en) * | 2018-04-16 | 2018-09-04 | 扬州科润德机械有限公司 | The control system of tower drier and its method dried |
| CN109030682A (en) * | 2018-10-16 | 2018-12-18 | 中石化石油工程技术服务有限公司 | The quick compounding device of the chromatographic hydrocarbon gas of hydrogen flame |
| CN113279949A (en) * | 2021-06-30 | 2021-08-20 | 吉林油田多源实业集团有限责任公司 | Reverse-thrust starting control device of oil pumping unit |
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2016
- 2016-06-17 CN CN201620591267.7U patent/CN205743854U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489256A (en) * | 2018-04-16 | 2018-09-04 | 扬州科润德机械有限公司 | The control system of tower drier and its method dried |
| CN108489256B (en) * | 2018-04-16 | 2023-09-29 | 扬州科润德机械有限公司 | Control system of vertical dryer and drying method thereof |
| CN109030682A (en) * | 2018-10-16 | 2018-12-18 | 中石化石油工程技术服务有限公司 | The quick compounding device of the chromatographic hydrocarbon gas of hydrogen flame |
| CN113279949A (en) * | 2021-06-30 | 2021-08-20 | 吉林油田多源实业集团有限责任公司 | Reverse-thrust starting control device of oil pumping unit |
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