CN207148623U - A kind of injection boiler alarm diagnosis instrument - Google Patents
A kind of injection boiler alarm diagnosis instrument Download PDFInfo
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- CN207148623U CN207148623U CN201720995355.8U CN201720995355U CN207148623U CN 207148623 U CN207148623 U CN 207148623U CN 201720995355 U CN201720995355 U CN 201720995355U CN 207148623 U CN207148623 U CN 207148623U
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Abstract
The utility model provides a kind of injection boiler alarm diagnosis instrument, including PLC module, signal processing module, metalfilmresistor and aviation socket, the PLC module exports the various states of boiler operatiopn, and pressure during boiler operatiopn, differential pressure and temperature these continuous variables, the pressure during boiler operatiopn that the signal processing module exports the PLC module, differential pressure and temperature these continuous variables carry out isolation and are converted to the output of 4 20MA current signals, the metalfilmresistor according to the signal processing module handle after analog temperature current signal, produce the analog signal of corresponding temperature value, the PLC module, the signal processing module and the metalfilmresistor are by the aviation socket by the various states of the boiler operatiopn of simulation, and pressure during boiler operatiopn, differential pressure and temperature are transferred to tested injection boiler.A kind of injection boiler alarm diagnosis instrument improves reliability, the security of boiler operatiopn, lifts steam injection running quality.
Description
Technical field
It the utility model is related to petroleum and natural gas DP technology technical field, more particularly to a kind of injection boiler alarm system
System fault diagnosis equipment.
Background technology
HTHP is run in oil field with injection boiler, and to ensure injection boiler safe operation, injection boiler establishes alarm
System, warning system include the data collection control units such as the measuring transducers such as temperature, pressure tool, temperature changing module, PLC, fuel oil
The execution units such as magnetic valve.Pressure, flow during the monitoring boiler operatiopn of injection boiler warning system automatic data collection, temperature, flame
Deng parameter signal, when parameter signal exception, warning system can perform alarm blowing out operation automatically, it is ensured that safe operation of the boiler.
The checkout and diagnosis for injection boiler warning system has only carried out the verification of measuring transducer tool at present, quiet in boiler
During state, alarm system data acquisition control unit and operation execution unit can not detect, more than injection boiler warning system single
The failure of member can not judge to exclude in advance, and boiler operatiopn produces larger potential safety hazard.For this, we have invented a kind of new one kind
Injection boiler alarm diagnosis instrument, solves above technical problem.
Utility model content
The purpose of this utility model, which is to provide one kind, to gather list to injection boiler alarm system data in boiler static state
Member, control output unit and the diagnosis of execution unit examinations, exclude warning system potential faults in advance, are injection boiler safety
Run a kind of injection boiler alarm diagnosis instrument to provide safeguard.
The purpose of this utility model can be achieved by the following technical measures：
A kind of injection boiler alarm diagnosis instrument includes PLC module, and signal processing module, metalfilmresistor and aviation are inserted
Seat, the PLC module export the various states of boiler operatiopn, and these are continuous for pressure, differential pressure and temperature during boiler operatiopn
Variable, and the signal processing module is transmitted a signal to, the signal processing module is connected to the PLC module, and the PLC module is defeated
Pressure, differential pressure and temperature these continuous variables during the boiler operatiopn gone out carry out isolation, and to be converted to 4-20MA current signals defeated
Going out, the metalfilmresistor is connected to the signal processing module, and according to the electricity of the analog temperature after signal processing module processing
Signal is flowed, produces the millivolt signal of drop simulation temperature sensor, produces the analog signal of corresponding temperature value, the aviation socket connects
Tested injection boiler is connected to, the PLC module, the signal processing module and the metalfilmresistor are all connected to the aviation socket, and
By the aviation socket by the various states of the boiler operatiopn of simulation, and pressure, differential pressure and temperature transmission during boiler operatiopn
To tested injection boiler.
The purpose of this utility model can be also achieved by the following technical measures：
The PLC module is using modular stages connection structure type PLC, including CPU module, switching value output module and analog quantity
Output module, the CPU module are data, the core of information processing, and the switching value output module exports each state of boiler operatiopn,
The analog output module exports pressure, differential pressure and temperature these continuous variables during boiler operatiopn.
The PLC module also includes communication module, and the communication module is connected to tested injection boiler by communication cable and controlled
PLC unit in system, PLC relevant informations in tested injection boiler control system are read, are completed to injection boiler switch board
Lane testing, flame produce, variable runtime value assigns, simulation boiler operatiopn, detection boiler alarm condition.
The PLC module also includes power module, and the power module is other module for power supply of PLC.
The switching value output module includes 16 passive contact outputs, to simulate each state of boiler operatiopn.
Each state simulation of the boiler operatiopn of switching value output module simulation include controllable flame, lubricating oil pressure it is low,
Air blower pressure is low, burner door open state.
The analog output module includes the first analog module, and the analog quantity of first analog module output includes mould
Intend gaseous-pressure, fuel flow, instrument air pressure, pump inlet pressure, pump discharge pressure, fuel pressure, atomizing pressure, radiation
Section inlet pressure.
The analog output module includes the second analog module, and the analog quantity of second analog module output includes mould
Intend convection section inlet pressure, steam pressure, feedwater differential pressure, convection section outlet pressure, backwater valve opening, fuel oil valve opening, air door
Aperture.
The analog output module includes the 3rd analog module, and the analog quantity of the 3rd analog module output includes mould
Intend flue-gas temperature, tube wall temperature, pump intake water temperature, pump discharge water temperature, convection section inlet water temperature, convection section exit water temperature, radiation
Section inlet water temperature, steam exit temperature.
The analog output module includes the 4th analog module, and the analog quantity of the 4th analog module output includes mould
Intend burner throat temperature, fuel oil temperature.
A kind of injection boiler alarm diagnosis instrument also includes touch-screen, and the touch-screen is connected to the PLC module, to set
Essential information, lane testing, system flow, igniting open stove, adjustment control, parameter setting, fault test these information, and show
Test result.
A kind of injection boiler alarm diagnosis instrument also includes power supply, and the power supply is connected to the PLC module and the signal transacting
These need the electrical equipments of direct current 24V power supplys to module, are powered for a kind of injection boiler alarm diagnosis instrument.
A kind of injection boiler alarm diagnosis instrument also includes portable operation case, the PLC module, the signal processing module,
The metalfilmresistor, the aviation socket, the touch-screen and the power supply are respectively positioned in the portable operation case.
A kind of injection boiler alarm diagnosis instrument also includes manual switching terminal, and the manual switching terminal is connected to tested note
Steam-boiler furnace control system, to control the signal for coming injection boiler scene or a kind of injection boiler alarm diagnosis instrument output manually
Signal be transferred to tested injection boiler control system.
The portable operation case is connected by the aviation socket with the manual switching terminal.
A kind of injection boiler alarm diagnosis instrument also includes ultraviolet lamp, and the ultraviolet lamp is connected to the aviation socket, production
The ultraviolet signal that raw boiler flame detection device can detect, carries out the flame simulating under static state.
Injection boiler is high-temp and-pressure once-through boiler, and water is boosted by plunger pump, is heated and boosted by burner
Water turn into saturated vapor and injection well bottom, reduce viscosity of thickened oil, improve oil recovery factor.A kind of note in the utility model
Boiler furnace alarm diagnosis instrument, for current uphole steam generator control system components aging and detection, processing, executive component mistake
Difference, which becomes, can not effectively examine greatly, warning system false alarm be present or the hidden trouble such as do not alarm that breaks down.By studying steam injection
Boiler warning system work general principle and implementation, pass through and simulate the signals such as generation pressure, temperature, differential pressure, switch, simulation
Boiler operatiopn and simulation output alarming value, are periodically detected to boiler warning system, hidden danger device are excluded in time, after making detection
Warning system chain alarm timely and accurately can be carried out to the abnormality in boiler operatiopn, can so as to improve boiler operatiopn
By property, security, steam injection running quality is lifted.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is a kind of internal circuit connection figure of injection boiler alarm diagnosis instrument of the present utility model.
Embodiment
To enable above and other objects, features and advantages of the present utility model to become apparent, it is cited below particularly go out preferably
Embodiment, and coordinate shown in accompanying drawing, it is described in detail below.
As depicted in figs. 1 and 2, it is a kind of structure chart of injection boiler alarm diagnosis instrument of the present utility model.The one kind is noted
Boiler furnace alarm diagnosis instrument by portable operation case (61), touch-screen (1), PLC module (2~10), signal processing module (11~
35), the metalfilmresistor (36~45) shown in aviation socket (47~53), power supply (60) and Fig. 2, uviol lamp (46), cut manually
Change terminal (54), communication cable (55) composition.
Join structure type PLC using modular stages, from left to right install successively, power module (2) is PLC other modules confessions
Electricity, CPU module (3) carry out logical sum arithmetic operator etc., communication module (4) is used for and it as data, the core of information processing
He communicates equipment such as Boiler PLC, and switching value output module (5~6) exports as diagnostic equipment quantity of state, analog output module (7
~10) 4-20MA is exported, for simulating continuous variable such as pressure, temperature etc..
To improve the reliable and stability of signal transmission, all analog quantity output signals all install signal processing module (11
~35), the performance of the signal processing module of numbering 11~35 is identical, and each analog output module includes 8 road 4-20MA simulations
Signal is measured, the signal of output module (7~8) exports by signal processing module (11~27), for simulating the pressure of boiler operatiopn
The signals such as power, differential pressure；Analog output module (9~10) output 4-20MA electric currents are simultaneously defeated through signal processing module (28~35)
Go out, the signal produces the millivolt letter of drop simulation temperature sensor by metalfilmresistor (36~45, the specification of resistance is identical)
Number, the analog signal of generation corresponding temperature value.
Each switching value output module includes 16 passive contact outputs, and switching value output module (5~6) is used to simulate pot
The various states such as blast pressure of stove operation is low, the door that burnt is opened etc. signal.
Communication module (4) establishes one between alarm diagnosis instrument and injection boiler control system using communication cable (55)
Serial communication passage, PLC relevant informations in injection boiler switch board are read using serial gateway and free protocol communication mode, completed
The processes such as lane testing, flame to injection boiler switch board produce, variable runtime value assigns, realize simulation boiler operatiopn, inspection
Survey the functions such as boiler alarm condition.
After alarm diagnosis instrument is placed at the scene, quickly it is connected with aviation plug (47~53) with system under test (SUT).In steam injection pot
Stove is in static (injection boiler stoppage in transit state, in addition to instrument power supply and the power supply of distribution secondary circuit is provided, disconnecting other power supplies)
When, diagnostic equipment carries out the test of injection boiler warning system analog quantity channel, and shows test result by diagnostic equipment touch-screen (1).
After the completion of lane testing, diagnostic equipment produces the analog quantity and on-off model of injection boiler dry run, inputs injection boiler control
System processed, the dry run established under boiler cold-state state.Artificially injection boiler is set to alarm by diagnostic equipment touch-screen (1) again
Value, is input to injection boiler control system, and injection boiler control system carries out chain alarm to the alarm signal from diagnostic equipment
Protect, so as to find the event existing for unit in variable processing, state acquisition and control output perform of injection boiler warning system
Barrier, boiler warning system fault diagnosis is completed, provided safeguard for injection boiler safe operation.
A kind of all modules of injection boiler alarm diagnosis instrument (except manual DIP switch (54), ultraviolet lamp device (46)) peace
Loaded in portable operation case (61), the control box (61) selects the flip-open cover case of 450mm*610mm high-strength engineering plastic, interior
Each module and touch-screen (1) are mounted with portion's installing plate.
A kind of injection boiler alarm diagnosis instrument produces boiler flame detection device energy using quartz glass ultraviolet lamp (46)
The 254nm ultraviolet signals detected, realize the flame simulating under static state.
The touch-screen (1) is 10.2 cun of the Kunlun on-state touch-screens, embedded with the Kunlun on-state configuration software, is diagnosed by warning system
The design of detection has planned the major interfaces of touch-screen, these interfaces include essential information, lane testing, system flow,
Stove, adjustment control, parameter setting, fault test interface are opened in igniting.The course of work of test result：Test PLC provides a value,
The value is gathered and shown by Boiler PLC, and test PLC obtains the value by communication modes, and shows test result on the touchscreen.
The portable operation case (61) is using aviation socket (47~53) with arranging (54) installed in boiler implosion cabinet inner terminal
Connection, realize the quick no misconnection of alarm diagnosis instrument and boiler control system.
The terminal block (54) switchs with manual DIP, comes injection boiler scene when terminal block (54) is located at normal position
Signal access injection boiler switch board, when need carry out ann test when, switch is allocated to down, from scene signal it is automatic
Disconnect, and the signal of alarm diagnosis instrument is linked into control system, realize the alarm diagnosis of injection boiler control system.
The utility model can be realized in boiler static state, by being simulated from analog signals such as site pressure, temperature,
It is controlled system simulation amount lane testing, and display channel test result；Boiler is completed to prepare, light a fire, adjusting fire, operation to wait
The simulation of journey, while simulate and produce 18 alarming values, make injection boiler control system because alarm enters alarm blowing out processing stage,
The detection to 18 alarms is realized, so as to find the various pieces of boiler control system, such as variable processing, the collection and control of state
The problem of system output exists in commission.
The alarm variables of injection boiler 18 and alarming value are taken in the alarm variable adjusted of being dispatched from the factory with steam for thermal recovery boiler
And alarming value, refer to table 1.
1 injection boiler of table, 18 alarm lists
| Sequence number | Title | Alarming value | Sequence number | Title | Alarming value | Sequence number | Title | Alarming value |
| 1 | Pump inlet pressure is low | 0.1 | 7 | Burner larynx temperature is high | 70 | 13 | Atomizing pressure is low | 0.2 |
| 2 | Steam pressure is low | 6 | 8 | High fume temperature | 260 | 14 | Burner door is opened | --- |
| 3 | Steam pressure is high | 16.8/20.5 | 9 | Fuel oil temperature is low | 70 | 15 | Air blower pressure is low | --- |
| 4 | Instrument wind is forced down | 0.25 | 10 | It is low to bear water flow | 35% | 16 | Lubricating oil pressure is low | --- |
| 5 | Vapor (steam) temperature is high | 354/375 | 11 | Gaseous-pressure is low | 0.07 | 17 | Power failure | --- |
| 6 | Tube wall temperature is high | 390/410 | 12 | Fuel pressure is low | 0.56 | 18 | It is flame-out | --- |
Remarks：Pressure unit MPa；Temperature unit DEG C；16.8/20.5 preceding digital is expressed as 17.2MPA boilers in slash
Alarming value, behind 20.5 be 21MPA alarming value, tube wall temperature is same as above.
A kind of injection boiler alarm diagnosis instrument needs to simulate pump inlet pressure, pump discharge pressure, convection section inlet pressure, right
Flow section outlet pressure, radiant section inlet pressure, steam pressure, atomizing pressure, instrument air pressure, gaseous-pressure, fuel pressure,
Feed water differential pressure, fuel flow；Simulation pump inlet water temperature, pump discharge water temperature, convection section inlet water temperature, convection section exit water temperature, spoke
Penetrate a section inlet water temperature, steam exit temperature, fuel oil temperature, burner throat temperature, flue-gas temperature, tube wall temperature；Simulate controllable
Flame, lubricating oil pressure are low, air blower pressure is low, burner door open state, and communication obtains the running status and ginseng of injection boiler
Number, realizes static diagnostic.
A kind of injection boiler alarm diagnosis instrument operation principle step of the present utility model is as follows：
Step 1, terminal switch (54) is switched to test side by alarm diagnosis instrument on request after wiring.
Step 2, the equipment dynamic breaker in boiler power distribution cabinet in addition to master switch is disconnected.
Step 3, selection detection boiler control system producer and burner types on alarm diagnosis instrument touch-screen (1).
Step 4, into the lane testing stage, lane testing switch is switched to test on touch-screen (1), led to corresponding
Corresponding value is set in road, and the numerical value (using communication cable (55) to read in diagnostic equipment) that boiler control system is read is with experiment
Value title is shown, while the calculation error value on the basis of actual value is shown in error amount, and interpretation passage acquisition performance is
It is no normal, after all lane testings are complete, lane testing switch in diagnostic equipment interface is switched to off status.
Step 5, alarm diagnosis instrument exports normal pump intake hydraulic pressure (11) to boiler, and boiler control system sets electrical heating former
When oily, normal oil temperature is delivered to boiler by alarm diagnosis instrument automatically, and its dependent variable is sent out by initial value, is obtained by communication cable (55)
The state and variate-value of injection boiler control system are obtained, while state and variate-value renewal are led on alarm diagnosis instrument interface
Alarm diagnosis instrument interface is crossed, can intuitively and easily understand the state of boiler control system.
Step 6, alarm diagnosis instrument interface is entered, it is necessary to set the rated discharge of detection boiler, rated operating pressure, combustion
Expect type.
Step 7, start plunger pump in injection boiler control system (referring to touch-screen and control cabinet panel, similarly hereinafter), start
Air blower, and will corresponding switch setting in opening stove claimed condition.
Step 8, purged 5 minutes before boiler control system experience in injection boiler control system by SR is started
Afterwards, into prepurge, executing agency's action, full trrottle, to big fire position, 30 seconds are undergone, air door is closed, to small fire position；Ignite
Magnetic valve and ignition transformer action, at this moment alarm diagnosis instrument light uviol lamp, flame detector is detected with fire on boiler, 5
Fuel solenoid valve (motor-driven valve) acts after second, undergoes 15 seconds or so, and igniting program controller output allows to adjust fiery order, in boiler implosion
Fire is adjusted in system, boiler is reached normal operation variate-value automatically and delivers to boiler control system by alarm diagnosis instrument.
Step 9, in alarm diagnosis instrument interface, failure that selection needs to test (, referring to 18 of table 1 tables of alarming, examining
In disconnected instrument interface, 18 alarm establishments are code, and Code Selection is pressed on touch-screen (1), and code corresponds with failure, simultaneously
Have Chinese prompt), alarm diagnosis instrument is directly fed to boiler control system by the variate-value in code or state after code is selected,
The PLC of boiler control system is judged automatically, and is handled it, if the chain interruption of boiler operatiopn, boiler automatically cut off combustion
Expect valve, jingle bell alarm, and be forced into post-purge, then this alarm diagnosis of boiler control system is normal, otherwise abnormal.
Step 10, if necessary to carry out ann test again, just by SR is started, boiler is directly entered pre- by post-purge
Purging, into igniting next time and ann test process, otherwise just exit test.
A kind of injection boiler alarm diagnosis instrument in the utility model utilizes analog quantity, switching value output module and communication
Module, pass through test of the programming realization to boiler control system passage acquisition performance；Simulation boiler opens stove, operation；Testing and control
The operation conditions of system, each transmitter and executing agency；Test 18 alarm running situations of boiler.By periodically to injection boiler
Warning system carries out testing and diagnosing, can in time find to eliminate warning system trouble point, greatly promote the peace of injection boiler operation
Overall coefficient.
Claims (16)
- A kind of 1. injection boiler alarm diagnosis instrument, it is characterised in that a kind of injection boiler alarm diagnosis instrument includes PLC module, Signal processing module, metalfilmresistor and aviation socket, the PLC module export the various states of boiler operatiopn, and boiler fortune Pressure, differential pressure and temperature these continuous variables during row, and the signal processing module is transmitted a signal to, the signal transacting mould Block is connected to the PLC module, pressure, differential pressure and temperature these continuous variables during the boiler operatiopn that the PLC module is exported Carrying out isolation and be converted to the output of 4-20MA current signals, the metalfilmresistor is connected to the signal processing module, and according to the letter The current signal of analog temperature after the processing of number processing module, the millivolt signal of drop simulation temperature sensor is produced, produced pair Answer the analog signal of temperature value, the aviation socket is connected to tested injection boiler, the PLC module, the signal processing module and should Metalfilmresistor is all connected to the aviation socket, and by the aviation socket by the various states of the boiler operatiopn of simulation, and Pressure, differential pressure and temperature during boiler operatiopn are transferred to tested injection boiler.
- 2. a kind of injection boiler alarm diagnosis instrument according to claim 1, it is characterised in that the PLC module uses module Change cascade structure form PLC, including CPU module, switching value output module and analog output module, the CPU module be data, The core of information processing, the switching value output module export each state of boiler operatiopn, analog output module output boiler Pressure, differential pressure and temperature these continuous variables during operation.
- 3. a kind of injection boiler alarm diagnosis instrument according to claim 2, it is characterised in that the PLC module also includes logical Module is interrogated, the communication module is connected to the PLC unit in tested injection boiler control system by communication cable, reads tested note PLC relevant informations in steam-boiler furnace control system, complete the lane testing to injection boiler switch board, flame produces, variable operation Value assigns, simulation boiler operatiopn, detection boiler alarm condition.
- 4. a kind of injection boiler alarm diagnosis instrument according to claim 3, it is characterised in that the PLC module also includes electricity Source module, the power module are other module for power supply of PLC.
- 5. a kind of injection boiler alarm diagnosis instrument according to claim 2, it is characterised in that in the switching value output module Exported containing 16 passive contacts, to simulate each state of boiler operatiopn.
- A kind of 6. injection boiler alarm diagnosis instrument according to claim 5, it is characterised in that the switching value output module mould Each state simulation of the boiler operatiopn of plan includes controllable flame, lubricating oil pressure is low, air blower pressure is low, burner Men Kaizhuan State.
- A kind of 7. injection boiler alarm diagnosis instrument according to claim 2, it is characterised in that the analog output module bag The first analog module is included, the analog quantity of first analog module output includes simulation gaseous-pressure, fuel flow, instrument sky Atmospheric pressure, pump inlet pressure, pump discharge pressure, fuel pressure, atomizing pressure, radiant section inlet pressure.
- A kind of 8. injection boiler alarm diagnosis instrument according to claim 2, it is characterised in that the analog output module bag Include the second analog module, the analog quantity of second analog module output include simulation convection section inlet pressure, steam pressure, Feed water differential pressure, convection section outlet pressure, backwater valve opening, fuel oil valve opening, throttle opening.
- A kind of 9. injection boiler alarm diagnosis instrument according to claim 2, it is characterised in that the analog output module bag The 3rd analog module is included, the analog quantity of the 3rd analog module output includes simulated flue gas temperature, tube wall temperature, pump intake Water temperature, pump discharge water temperature, convection section inlet water temperature, convection section exit water temperature, radiant section inlet water temperature, steam exit temperature.
- A kind of 10. injection boiler alarm diagnosis instrument according to claim 2, it is characterised in that the analog output module Including the 4th analog module, the analog quantity of the 4th analog module output includes simulated combustion device aditus laryngis temperature, fuel oil temperature Degree.
- A kind of a kind of 11. injection boiler alarm diagnosis instrument according to claim 1, it is characterised in that injection boiler report Alert diagnostic equipment also includes touch-screen, and the touch-screen is connected to the PLC module, to set essential information, lane testing, system stream Journey, igniting open stove, adjustment control, parameter setting, fault test these information, and show test result.
- A kind of a kind of 12. injection boiler alarm diagnosis instrument according to claim 11, it is characterised in that injection boiler report Alert diagnostic equipment also includes power supply, and the power supply is connected to the PLC module and the signal processing module, and these need direct current 24V power supplys Electrical equipment, powered for a kind of injection boiler alarm diagnosis instrument.
- A kind of a kind of 13. injection boiler alarm diagnosis instrument according to claim 12, it is characterised in that injection boiler report Alert diagnostic equipment also includes portable operation case, the PLC module, the signal processing module, the metalfilmresistor, the aviation socket, The touch-screen and the power supply are respectively positioned in the portable operation case.
- A kind of a kind of 14. injection boiler alarm diagnosis instrument according to claim 13, it is characterised in that injection boiler report Alert diagnostic equipment also includes manual switching terminal, and the manual switching terminal is connected to tested injection boiler control system, to control manually The signal that injection boiler scene is come or signal that a kind of injection boiler alarm diagnosis instrument exports are transferred to tested steam injection pot by system Furnace control system.
- 15. a kind of injection boiler alarm diagnosis instrument according to claim 14, it is characterised in that the portable operation case leads to The aviation socket is crossed to be connected with the manual switching terminal.
- A kind of a kind of 16. injection boiler alarm diagnosis instrument according to claim 1, it is characterised in that injection boiler report Alert diagnostic equipment also includes ultraviolet lamp, and the ultraviolet lamp is connected to the aviation socket, and producing boiler flame detection device can detect Ultraviolet signal, carry out it is static under flame simulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995355.8U CN207148623U (en) | 2017-08-09 | 2017-08-09 | A kind of injection boiler alarm diagnosis instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995355.8U CN207148623U (en) | 2017-08-09 | 2017-08-09 | A kind of injection boiler alarm diagnosis instrument |
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| Publication Number | Publication Date |
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| CN207148623U true CN207148623U (en) | 2018-03-27 |
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ID=61666291
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| CN201720995355.8U Expired - Fee Related CN207148623U (en) | 2017-08-09 | 2017-08-09 | A kind of injection boiler alarm diagnosis instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109388095A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Injection boiler alarm diagnosis instrument |
-
2017
- 2017-08-09 CN CN201720995355.8U patent/CN207148623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109388095A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Injection boiler alarm diagnosis instrument |
| CN109388095B (en) * | 2017-08-09 | 2023-10-31 | 中国石油化工股份有限公司 | Alarm diagnostic instrument for steam-injection boiler |
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Granted publication date: 20180327 Termination date: 20200809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |