CN209372378U - The detection system of pressure regulator before a kind of indoor table suitable for combustion gas - Google Patents
The detection system of pressure regulator before a kind of indoor table suitable for combustion gas Download PDFInfo
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- CN209372378U CN209372378U CN201821400062.1U CN201821400062U CN209372378U CN 209372378 U CN209372378 U CN 209372378U CN 201821400062 U CN201821400062 U CN 201821400062U CN 209372378 U CN209372378 U CN 209372378U
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Abstract
The detection system of pressure regulator before a kind of indoor table suitable for combustion gas, including air supply system, experiment air delivering pipeline, control piper, telescopic chucking appliance system, industrial personal computer, level-one pressure control device and second level pressure control device；The telescopic chucking appliance system includes sequentially connected venting ball valve, telescopic tube, tested pressure regulator and flow controller；The level-one pressure control device includes the electronic proportional dump valve of level-one pressure regulation and primary body throttling set；The second level pressure control device includes the electronic proportional dump valve of second voltage regulation, secondary body throttling set and bypass line；The industrial personal computer is connect by analog output module, data/signal transmssion line with level-one pressure regulation ratio adjusting valve, second level ratio adjusting valve, realizes the transmission of analog signal, controls to adjust valve by the size of analog quantity to control the air pressure signal of output.The flow system flow adjustable range is big, pressure controling precision is high, minimum discharge is small, easy for installation and can collect gas supply, pressure regulation, be shown in one.
Description
Technical field
The utility model relates to pressure regulator fields before the indoor table of combustion gas, before being suitable for the indoor table of combustion gas more particularly, to one kind
The detection system of pressure regulator.
Background technique
With the fast development of Chinese big and medium-sized cities population, domestic premises are gradually to Development of High-rise Buildings, and skyscraper
Standpipe combustion gas additonal pressure due to caused by depth displacement is easy that user interior is made supply gas pressure deficiency or exceeded occur.And it passes
The civil kitchen range and water heater of system, the supply gas pressure of front end should be super when going beyond the scope in the range of 1000~3000Pa, can lead
Combustion instability is caused, thermal efficiency decline forms security risk when serious.Therefore all the scheme of indoor pressure regulation is public by vast combustion gas
Department uses, and pressure regulator use is also more and more extensive before indoor table, while producing huge demand to related check equipment.
Pressure regulator has the characteristic that flow is small, pressure is low before indoor table.During the test, with the unlatching of valve downstream
Or close, it is tested in the supply gas pressure of pressure regulator, forefront pressure often not can guarantee.Therefore system is controlled to the pressure of gas supply
More stringent requirements are proposed for system；In addition, test macro needs pressure regulator before the table suitable for different model, experiment condition is complicated,
It is required that test macro flow adjustment range is big, precision is high, and minimum discharge is small；Simultaneously as pressure regulator connects before the table of different model
Degree of lip-rounding formula and size are different, it is desirable that test macro should be easy to dismount tested pressure regulator.
Utility model content
In view of the above shortcomings of the prior art, before being suitable for the indoor table of combustion gas the purpose of this utility model is to provide one kind
The detection system of pressure regulator, the flow system flow adjustable range is big, pressure controling precision is high, minimum discharge is small, easy for installation and can
Collection gas supply, is shown in one at pressure regulation.
As above design, the technical solution of the utility model is: the detection system of pressure regulator before a kind of indoor table suitable for combustion gas
System, including air supply system and pipe-line system, air supply system is by pressure stabilizing surge tank and compressor set at pipe-line system includes that experiment is defeated
Air pipe and control piper two parts, it is characterised in that: further include telescopic chucking appliance system, industrial personal computer and filled by level-one pressure control
Set the preceding pressure control system constituted with second level pressure control device；
The telescopic chucking appliance system includes sequentially connected venting ball valve, telescopic tube, tested pressure regulator and flow
Controller, cylinder drive telescopic tube directly to clamp tested pressure regulator；On the venting ball valve and telescopic tube connecting line and
It is separately installed with pressure transmitter on the pipeline that tested pressure regulator is connect with flow controller, tested pressure regulator both ends are respectively provided with
Sealing element, the sealing element are connect with cylinder；The industrial personal computer by data acquisition module, data/signal transmssion line and the two
Pressure transmitter connection, realizes the transmission of data-signal and is shown on industrial personal computer display screen；
The level-one pressure control device includes the electronic proportional dump valve of level-one pressure regulation and primary body throttling set, level-one pressure regulation
Electronic proportional dump valve is connect with cylinder；
The second level pressure control device includes the electronic proportional dump valve of second voltage regulation, secondary body throttling set and bypass pipe
Road, secondary body throttling set are connect with the bypass line being made of ball valve；
The industrial personal computer passes through analog output module, data/signal transmssion line and level-one pressure regulation ratio adjusting valve, second level
Ratio adjusting valve connection, realizes the transmission of analog signal, controls to adjust valve by the size of analog quantity to control the gas of output
Press signal；
The experiment air delivering pipeline begins to pass through shut-off valve from pressure stabilizing surge tank and is connected with gas flowmeter, subsequently into
Level-one pressure control device, enters second level pressure control device after the decompression of level-one pressure control device, enters after second depressurized scalable
Chucking appliance system come out from tested pressure regulator and pass through flow control valve and be discharged to atmosphere subsequently into tested pressure regulator；
The control piper draws pneumatic three elements, that is, filter, pressure regulator and oil sprayer from pressure stabilizing surge tank, and pneumatic three
Element is divided into three Lu Guanlu, all the way enter level-one pressure regulation ratio adjusting valve decompression after enter level-one pressure regulation throttling set, all the way into
Enter second voltage regulation throttling set and bypass line after entering the decompression of second voltage regulation ratio adjusting valve, enters cylinder all the way as power
Gas source drives moving casing to compress tested pressure regulator.
It is equipped on the pipeline that the second level pressure control device is connect with the venting ball valve in telescopic chucking appliance system manually
Analog signal is inputted industrial personal computer by encoder by exhaust valve, the manual exhaust valve, and then industrial personal computer will be after analog signal processing
It is connect by analog output module, data/signal transmssion line with the flow controller in telescopic chucking appliance system.
Above-mentioned cylinder uses plug-type cylinder.
Above-mentioned tested pressure regulator both ends are respectively provided with sealing element.
The output port of above-mentioned tested pressure regulator installs muffler.
Compared with the prior art, the advantages of the utility model are:
In view of the above shortcomings of the prior art, big, pressure that the purpose of this utility model is to provide a kind of flow adjustment ranges
Power control precision is high, minimum discharge is small, easy for installation and collection gas supply, pressure regulation, is shown in pressure regulator test before integrated indoor table
Device.
1. pressure control range is wide: the present apparatus use second level pressure stabilizing method, can detecte inlet pressure from 0.4MPa to
The pressure regulator of 5kPa.
2. pressure controling precision is high: pressure control uses closed loop electricity-pressure signal pressure control control method, makes to input pressure stabilizing
The signal pressure of device is stablized.Make the pressure signal of input and the pressure signal balance of rear end acquisition, control by mechanical structure
Valve port opening, to control outlet pressure.
3. operating quick for installation: using the scheme of cylinder-pressing, solve the problems, such as that tested pressure regulator connector is many kinds of,
Eliminate the work of installation bolt or threading.It is convenient and efficient using touch screen and manual exhaust valve control pressure and flow.
Detailed description of the invention
Fig. 1 is the system schematic of the utility model embodiment.
Fig. 2 is the automatic pressure-controlled control principle schematic diagram of the utility model.
Wherein: 1- compressor；2- pressure stabilizing surge tank；3- gas flowmeter；4- temperature transmitter；5- pressure transmitter；6-
Level-one pressure regulation ratio adjusting valve；7- level-one pressure regulation throttling set；8- second voltage regulation throttling set；9- second voltage regulation proportion adjustment
Valve；10- ball valve；11- ball valve；12- manual exhaust valve；13- venting ball valve；14- pressure transmitter；15- telescopic tube；16- gas
Cylinder；17- sealing element；18- is tested pressure regulator；19- pressure transmitter；20- flow controller；21- signal transmssion line；22- ball
Valve；23- muffler；24- industrial personal computer；25- shut-off valve；26- filter；27- pressure regulator；28- oil sprayer.
Specific embodiment
1 pair of the utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, before a kind of indoor table suitable for combustion gas pressure regulator detection system, including air supply system and pipeline system
System, air supply system include experiment air delivering pipeline and control piper two parts at, pipe-line system by pressure stabilizing surge tank and compressor set,
Voltage-controlled system system before further including telescopic chucking appliance system, industrial personal computer and being made of level-one pressure control device and second level pressure control device
System.
The telescopic chucking appliance system includes sequentially connected venting ball valve, telescopic tube, tested pressure regulator and flow
Controller, cylinder drive telescopic tube directly to clamp tested pressure regulator；On the venting ball valve and telescopic tube connecting line and
It is separately installed with pressure transmitter on the pipeline that tested pressure regulator is connect with flow controller, tested pressure regulator both ends are respectively provided with
Sealing element, the sealing element are connect with cylinder；The industrial personal computer by PLC data acquisition module, data/signal transmssion line and this
Two pressure transmitter connections, realize the transmission of data-signal and are shown on industrial personal computer display screen.
The compressor 1 of gas source is provided, which compresses indentation pressure stabilizing surge tank 2 for air, and pressure stabilizing surge tank 2 is connected to
There is two-way air delivering pipeline；Experiment air delivering pipeline provides gas source for experiment, and control piper provides gas for control pressurer system and cylinder
Source.Enter pneumatic three element, i.e. filter 26, pressure regulator 27 and oil sprayer 28 by shut-off valve on control piper.Filter 26
For the cleaning to gas source, it may filter that the moisture in compressed air, moisture avoided to enter device with gas.Pressure regulator 27 can be to gas
Source carries out pressure stabilizing, so that gas source is in steady state, to the damage of the hardware such as valve or actuator when can reduce because of gas source pressure fluctuations
Wound.Oil sprayer 28 can be lubricated body movement component, can be lubricated to the component for being inconvenient to add lubricating oil, extend machine
The service life of body.Control piper is divided into three tunnels by pneumatic three element, enters level-one pressure regulation ratio adjusting valve 6 all the way and depressurizes
Afterwards, into level-one pressure regulation throttling set 7；After entering the decompression of second voltage regulation ratio adjusting valve 9 all the way, throttles and fill into second voltage regulation
Set 8；Enter cylinder 16 all the way, compresses tested pressure regulator as power gas source driving moving casing.
Experiment air delivering pipeline is connected by shut-off valve with gas flowmeter 3, then sequentially enters level-one pressure regulation throttling set
7, second voltage regulation throttling set 8 and bypass line 10, by venting ball valve 13, cylinder 16 drives telescoping tube 15 and sealing element 17 to press
Tightly tested pressure regulator 18, is discharged into atmosphere by flow controller 20 and silencer 23.
Preceding pressure control system is made of level-one pressure control device and second level pressure control device.The level-one pressure control device includes level-one
The electronic proportional dump valve of pressure regulation and primary body throttling set, the electronic proportional dump valve of level-one pressure regulation are connect with cylinder；Described two
Grade pressure control device includes the electronic proportional dump valve of second voltage regulation, secondary body throttling set and bypass line, secondary body throttling
Device is connect with the bypass line being made of ball valve, when the higher pressure regulator test of progress inlet pressure, opens bypass line
Level-one pressure regulation is only used, when the lower pressure regulator test of progress inlet pressure, then bypass line is closed and uses firsts and seconds
Pressure regulation.Second voltage regulation device can be by pressure reduction to 5-50kPa.
Level-one electric proportional-regulation valve is connect by signal transmssion line with industrial personal computer plc data acquisition module, and 4- is inputted
The electric current of 20mA will be depressurized to 50- from the gas source of pressure surge tank 1MPa by adjusting the aperture of level-one electric proportional-regulation valve
400kPa is input to primary body throttling set as pressure signal.Connecing signal pipe in primary body throttling set downstream will subtract
Pressure after pressure is input to secondary body throttling set, and the aperture of throttling set is adjusted according to the difference of two pressure signals, makes two
Grade pressure regulator can be by pressure reduction to 50-400kPa.
Industrial personal computer 24 passes through plc data acquisition module, data/signal transmssion line and gas flowmeter 3 and its attached temperature
Transmitter 4, the connection of pressure transmitter 5 are spent, realizes the transmission of data-signal.Gas flowmeter 3 is acquired according to pressure transmitter 5
The pressure arrived, by flow rate conversion at the gas flow Q under normal pressurem.Industrial personal computer is collected according to formula (1) according to temperature transmitter 4
Temperature, by flow rate conversion to pressure regulator inlet gas body temperature
The flow Q of 15 DEG C of degree, is shown on industrial personal computer display screen.
(1)
Industrial personal computer 24 is connected by data acquisition module, data/signal transmssion line and pressure transmitter 14, pressure transmitter 19
It connects, realizes the transmission of data-signal, be shown on industrial personal computer display screen.
Industrial personal computer 24 passes through analog output module, data/signal transmssion line and level-one pressure regulation ratio adjusting valve 6, second level
Ratio adjusting valve 7 connects, and realizes the transmission of analog signal, controls to adjust valve by the size of analog quantity to control the gas of output
Press signal.
Analog signal is inputted industrial personal computer 24 by encoder by manual exhaust valve 12, and then industrial personal computer is by analog signal processing
It is connect afterwards by analog output module, data/signal transmssion line with flow controller 20, realizes the transmission of analog signal, led to
The aperture of size control flow controller of analog quantity is crossed to which control flows through the flow of tested pressure regulator 18.Manual exhaust valve 12
Effect mainly prevent flow controller from leaking in use, test close pressure when, valve is barred up.
The test method of the detection system of pressure regulator before a kind of above-mentioned indoor table suitable for combustion gas are as follows:
1, it is tested the installation of pressure regulator before indoor table:
Tested pressure regulator is connect with telescopic chucking appliance system smoothly it to be clamped, and opening jettron makes cylinder
16 inflations push telescoping tube 15 to clamp tested pressure regulator 18；
2. the setting of experimental pressure
(1) according to pressure regulator use condition is tested, selection uses level-one pressure control or second level pressure control.When tested pressure regulator enters
Mouthful pressure is greater than 50kPa, then opens second level pressure control bypass line ball valve 10, and level-one pressure regulation ratio adjusting valve 6 keeps work, by two
Grade ratio adjusting valve 7 is closed, and gas enters tested pressure regulator by bypass line；When tested pressure regulator inlet pressure is in 5-
When 50kPa, then second level pressure control bypass line ball valve 10 is closed, level-one pressure regulation ratio adjusting valve 6, second level ratio adjusting valve 7 are protected
Work is held, for gas by level-one pressure regulation throttling set 7, second voltage regulation throttling set 8 enters tested pressure regulator 18.
(2) level-one pressure control and second level pressure control program are selected, by the minimum value P of tested pressure regulator inlet pressure1minIt is input to
In touch screen, by feedback control procedures automatic voltage regulation.
3. the test of pressure regulator performance
(1) venting ball valve 13 is closed, opening conduits shut-off valve 25 makes gas enter tested pressure regulator.Automatic voltage regulation system
According to the pressure set points P of input1Carry out pressure adjusting.It waits supply gas pressure to stablize to pressure regulator inlet pressure, starts to try
It tests.
(2) it shakes manual exhaust valve and changes flow using flow controller 20, be first gradually increased to maximum empirical flow
Qmax, then gradually reduce to zero.Selected 5 flows increase point, 4 flows reduce point, record their pressure value P2minAnd stream
Magnitude Qmin。
(3) shaking manual exhaust valve 12 closes flow controller 20, manual slowly closing ball valve 22.Record closes pressure
Value P2。
(4) level-one pressure control and second level pressure control program are selected, by the median P of tested 18 inlet pressure of pressure regulator1intInput
Into touch screen, by feedback control procedures automatic voltage regulation.Step (1), step (2) and step (3) are repeated, 5 flows is obtained and increases
It adds some points, 4 flows reduction points, records their pressure value P2intWith flow value Qint。
(5) level-one pressure control and second level pressure control program are selected, by the maximum value P of tested 18 inlet pressure of pressure regulator1maxInput
Into touch screen, by feedback control procedures automatic voltage regulation.Step (1), step (2) and step (3) are repeated, 5 flows is obtained and increases
It adds some points, 4 flows reduction points, records their pressure value P2maxWith flow value Qmax。
(6) pipe break valve 25 is closed, venting ball valve 13 is opened, shaking manual exhaust valve 12 makes flow threatening device 20
It opens, opens ball valve 22.Gas is set to be discharged into atmosphere.Shrinking cylinder 16 by jettron drives telescoping tube 15 to retract tested pressure regulation
Device is removed.
(7) pressure regulator outlet pressure P is tested using gas flow Q as X-axis independent variable according to experimental data2As Y-axis
Dependent variable establishes plane right-angle coordinate, makes P under different inlet pressures1min, P1int, P1maxUnder, it is tested pressure regulator outlet pressure
Power P2With the figure line of gas flow, the precision of voltage regulation AC of tested pressure regulator is calculated, closes pressure SG and closes pressure area etc.
Grade SZ.
2 pairs of the utility model pressure control strategies are described in further detail with reference to the accompanying drawing.
This control system belongs to multiplex control system, and feedforward path, composition one are added in the feedback control loop of system
The system that a feedforward control is combined with feedback control.Subloop is by disturbing except major loop (closed loop of pressure regulator itself)
It is dynamic to be contained in subloop.Subloop directly selects outlet pressure as control variable, to realize the accurate adjusting of outlet pressure.
The selection of control law is the important link of system design.It, can be according to purely retarded for single order pure lag system
The ratio of time and time constant chooses the control law of controller.When ratio is less than 0.2, P or PI control rule are selected
Rule.And in terms of process characteristic: P control law disturbance cancelling can influence quickly, stablize system, but there are remaining differences；PI
Control law can eliminate remaining difference, be widely used；PD control rule is suitable for control channel time constant or capacity lag is larger
Occasion, can be improved the stability of system, reduce dynamic deviation, still, measuring signal larger for purely retarded have noise or
The system of periodic disturbance should not use；PID control rule introduces integral on the basis of ratio controls, and can eliminate remaining difference,
The differential action is added, and the stability of system can be improved, control larger suitable for control channel time constant or capacity lag
More demanding occasion, but parameter tuning is more complex.
In the present invention, exist since pressure control precision and stability is our most concerned indexs, and in system compared with
Big disturbing factor, therefore, electropneumatic controller use PID control, are realized by PLC.Computer programming realizes the following institute of algorithm
Show.
As e (k)≤100,
U (k+1)=u (k)+Kp×e(k)+Kp×T0/Ti×∑e(k)+Kp×Td/T0×(e(k)– e(k-1))；
As e (k) > 100,
U (k+1)=u (k)+Kp×e(k)+Kp×Td/T0×(e(k)–e(k-1))；
Pid parameter is adjusted according to the pace of change of deviation and deviation in real time to improve the performance of system, to adapt to not
With the regulating effect in situation.
When system is in stable state, pressure remains setting value P1S, the disabling of pressure control at this time.When pressure divergence Δ
P=P1- P1SWhen greater than certain threshold values, think that the outlet pressure of pipe-line system changes at this time, pressure control comes into force.Pressure
Force controller is adjusted proportion adjustment P (PI control) according to Δ P size, until Δ P is less than defined threshold values, pressure control disabling.
Adjustment process schematic diagram is shown in Fig. 2.Threshold value determines the pressure control precision that system can provide.In the range of 10kPa~300kPa,
Pressure precision controls within 1%, and for low voltage situations (≤10kPa), pressure control deviation should not exceed 0.01kPa.
Claims (4)
1. the detection system of pressure regulator before a kind of indoor table suitable for combustion gas, including air supply system and pipe-line system, air supply system
By pressure stabilizing surge tank and compressor set at pipe-line system includes experiment air delivering pipeline and control piper two parts, it is characterised in that:
Voltage-controlled system system before further including telescopic chucking appliance system, industrial personal computer and being made of level-one pressure control device and second level pressure control device
System；
The telescopic chucking appliance system includes sequentially connected venting ball valve, telescopic tube, tested pressure regulator and flow control
Device, cylinder drive telescopic tube directly to clamp tested pressure regulator；It is on the venting ball valve and telescopic tube connecting line and tested
It is separately installed with pressure transmitter on the pipeline that pressure regulator is connect with flow controller, tested pressure regulator is connect with cylinder；It is described
Industrial personal computer is connect by data acquisition module, data/signal transmssion line with the two pressure transmitters, realizes the biography of data-signal
It is defeated and be shown on industrial personal computer display screen；
The level-one pressure control device includes the electronic proportional dump valve of level-one pressure regulation and primary body throttling set, and level-one pressure regulation is electronic
Proportional dump valve is connect with cylinder；
The second level pressure control device includes the electronic proportional dump valve of second voltage regulation, secondary body throttling set and bypass line, and two
Grade body orifices device is connect with the bypass line being made of ball valve；
The industrial personal computer passes through analog output module, data/signal transmssion line and level-one pressure regulation ratio adjusting valve, second level ratio
Regulating valve connection, realizes the transmission of analog signal, controls to adjust valve by the size of analog quantity to control the air pressure of output and believe
Number；
The experiment air delivering pipeline begins to pass through shut-off valve from pressure stabilizing surge tank and is connected with gas flowmeter, subsequently into level-one
Pressure control device enters second level pressure control device after the decompression of level-one pressure control device, telescopic folder is entered after second depressurized
Tool system, subsequently into tested pressure regulator, from tested pressure regulator, passing through volume control device is discharged to atmosphere out；
The control piper draws pneumatic three elements, that is, filter, pressure regulator and oil sprayer, pneumatic three element from pressure stabilizing surge tank
It is divided into three Lu Guanlu, enters level-one pressure regulation throttling set after entering the decompression of level-one pressure regulation ratio adjusting valve all the way, enter two all the way
Enter second voltage regulation throttling set and bypass line after grade pressure regulation ratio adjusting valve decompression, enters cylinder all the way as power gas source
Moving casing is driven to compress tested pressure regulator；
Manual exhaust is installed on the pipeline that the second level pressure control device is connect with the venting ball valve in telescopic chucking appliance system
Analog signal is inputted industrial personal computer by encoder by valve, the manual exhaust valve, and then industrial personal computer will pass through after analog signal processing
Analog output module, data/signal transmssion line are connect with the flow controller in telescopic chucking appliance system.
2. the detection system of pressure regulator before a kind of indoor table suitable for combustion gas according to claim 1, it is characterised in that: on
Cylinder is stated using plug-type cylinder.
3. the detection system of pressure regulator before a kind of indoor table suitable for combustion gas according to claim 1, it is characterised in that: on
It states tested pressure regulator both ends and is respectively provided with sealing element, which connect with cylinder.
4. the detection system of pressure regulator before a kind of indoor table suitable for combustion gas according to claim 1, it is characterised in that: on
State the output port installation muffler of tested pressure regulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821400062.1U CN209372378U (en) | 2018-08-29 | 2018-08-29 | The detection system of pressure regulator before a kind of indoor table suitable for combustion gas |
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| CN201821400062.1U CN209372378U (en) | 2018-08-29 | 2018-08-29 | The detection system of pressure regulator before a kind of indoor table suitable for combustion gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899398A (en) * | 2021-09-18 | 2022-01-07 | 深圳市宏智智能装备有限公司 | Low-voltage regulator testing method for intelligent micro-pipe network ecological chain |
-
2018
- 2018-08-29 CN CN201821400062.1U patent/CN209372378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899398A (en) * | 2021-09-18 | 2022-01-07 | 深圳市宏智智能装备有限公司 | Low-voltage regulator testing method for intelligent micro-pipe network ecological chain |
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