CN107152387A - Quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand - Google Patents

Quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand Download PDF

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Publication number
CN107152387A
CN107152387A CN201710514471.8A CN201710514471A CN107152387A CN 107152387 A CN107152387 A CN 107152387A CN 201710514471 A CN201710514471 A CN 201710514471A CN 107152387 A CN107152387 A CN 107152387A
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China
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push pedal
hydraulic cylinder
plate
flow rate
valve
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CN201710514471.8A
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CN107152387B (en
Inventor
李代生
王小龙
王军
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General Engineering Research Institute China Academy of Engineering Physics
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General Engineering Research Institute China Academy of Engineering Physics
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00

Abstract

The invention discloses a kind of quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand, connected between first push pedal and the second push pedal by the first side plate, the two ends of the piston rod of hydraulic cylinder pass the cylinder sleeve two ends of hydraulic cylinder and are connected respectively with the first push pedal and second push pedal respectively, position between the first oilhole and the second oilhole that the piston of hydraulic cylinder is located at the stage casing of piston rod and is located on cylinder sleeve, connected between second push pedal and movable plate by the second side plate, the center of movable plate is provided with screw and leading screw passes through the screw, one end of leading screw is connected by bearing with thrust plate, the rotating shaft of the other end and stepper motor of leading screw is connected, the central axis of leading screw and the centerline axis parallel of piston rod or overlapping.The present invention realizes fuel feeding purpose by being moved reciprocatingly by driving stepper motor hydraulic cylinder piston, and fuel supply flow rate significantly improves fuel-flow control precision, speed and detection efficiency directly by program setting and by step motor control.

Description

Quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand
Technical field
It is used for piston cooling nozzle performance experiment table the present invention relates to a kind of fuel supply flow rate adjusting means, more particularly to one kind The quantitative fuel supply flow rate adjusting means of frame.
Background technology
Piston cooling nozzle is PCN (being referred to as PCN below), is used as the important component of automobile engine, its performance Good and bad lubrication to engine movements piston, cooling effect there is extremely important effect.
PCN switching characteristic, discharge characteristic test are exfactory inspection projects, it is desirable to carry out 100% to all products that dispatch from the factory One hundred percent inspection is tested.PCN specification, model are different, its technical requirement difference.
Needing the technical indicator parameter of detection includes:
Opening pressure:Flow rises to charge oil pressure value during setting from low to high.Such as:30mL、200kPa± 20kPa。
Closing presure:Charge oil pressure value when flow drops to setting on earth by height.Such as:30mL, more than 170kPa.
Leakage flow:Flow value before opening during specified pressure value.Such as:150kPa, less than 0.1L/min.
Dredge oil amount:Flow rises to flow value during authorized pressure value from low to high.Such as:400kPa, 1.15L/min~ 1.55L/min。
Target practice position:When charge oil pressure reaches draining flow rate test pressure value, the position of oily beam injection strike.Such as: Flow is more than or equal to 90% in 400kPa, penetrating designated area.
When carrying out switching characteristic, discharge characteristic detection to PCN, it is desirable to using automobile engine oil as detection medium.In order to reduce The equipment operating cost of PCN performance test stands, it is desirable to normal temperature automobile engine oil be detection medium, that is, require PCN performance tests The running of stand will not cause detection medium machine oil to produce temperature rise.
The performance test stand of known valve class product adjusts fueller using pressure mostly.Realize the tune of charge oil pressure Section.The form of pressure-regulating device substantially has following several:Pressure regulating unit is a ball valve, passes through manual adjustment ball valve Aperture, forms meter in pressure regulation;Pressure regulating unit is rapid switching valve, by adjusting rapid switching valve, changes by-pass Size is measured, by-pass throttle pressure regulation is formed;Pressure regulating unit is proportioning valve, by adjusting the aperture of proportioning valve, forms oil-feed section Flow pressure regulation;Or using variable-frequency motor driving oil pump operation, by the rotating speed of programme-control variable-frequency motor, realize charge oil pressure Regulation.Motor, pump in this kind of pressure regulation test oil circuit, the operation of valve can all generate heat, and cause detection medium machine oil to produce temperature rise.
In order to solve said engine oil problem of temperature rise, technology newer at present employs the following two kinds oil channel structures:
The first, using air pressure-loading fueller, as shown in figure 1, oil channel structures include air tank 13, delivery valve Door, oil return valve, oil return fuel tank 11, air intake valve, drain tap, barostat 16 and high-pressure air source 15, the intake valve Door includes the first air inlet electromagnetic valve 22, the first air inlet angle pedestal valve 18, the second air inlet electromagnetic valve 20, the second air inlet angle pedestal valve 21, institute Stating drain tap includes first exhaust magnetic valve 31, first exhaust angle pedestal valve 17, second exhaust magnetic valve 33, second exhaust angled seat Valve 19, the oil-supply valve includes fuel feeding magnetic valve 34 and fuel feeding angle pedestal valve 23, and the oil return valve includes oil return solenoid valve 32 The a quarter in the whole space accounted for oil return angle pedestal valve 12, the space above machine oil in air tank 13 in air tank 13 To 1/3rd, general volume is 10 liters, the fuel feeding between the middle and lower part of air tank 13 and the oil inlet of piston cooling nozzle 5 Fuel feeding angle pedestal valve 23, flow sensor 3 and pressure sensor 4 are installed, oil return fuel tank 11 is installed on piston cooling spray on pipe 28 The lower section of the jet of mouth 5 and the top for being located at air tank 13, oil return angle pedestal valve 12 are installed on oil return fuel tank 11 and inflation oil On oil return pipe 29 between case 13, the position and air pressure of the upper position of air tank 13 above the machine oil in air tank 13 The first air inlet angle pedestal valve 18 being connected in parallel and the second air inlet angled seat are installed on the tracheae 30 between the gas outlet of adjuster 16 Interlinked on valve 21, the tracheae between the first air inlet angle pedestal valve 18 and the second air inlet angle pedestal valve 21 and air tank 13 and be connected to two Blast pipe (unmarked in figure), first exhaust angle pedestal valve 17 and second exhaust angle pedestal valve 19 are respectively arranged on two blast pipes, The air inlet of barostat 16 is connected with high-pressure air source 15, the signal output part of flow sensor 3 and the letter of pressure sensor 4 Number signal input part of the output end respectively with controller (not shown) is connected, the control signal of the first air inlet electromagnetic valve 22, The control signal of second air inlet electromagnetic valve 20, the control signal of first exhaust magnetic valve 31, second exhaust magnetic valve 33 The control of the control signal of control signal, the control signal of fuel feeding magnetic valve 34 and oil return solenoid valve 32 respectively with controller Output end connection processed, the air inlet of the first air inlet electromagnetic valve 22, the air inlet of the second air inlet electromagnetic valve 20, first exhaust magnetic valve 31 air inlet, the air inlet of second exhaust magnetic valve 33, the air inlet of the air inlet of fuel feeding magnetic valve 34 and oil return solenoid valve 32 Gas outlet of the mouth respectively with barostat 16 is connected, 22 gas outlets of the first air inlet electromagnetic valve and the first air inlet angle pedestal valve 18 Control end is connected, and the gas outlet of the second air inlet electromagnetic valve 20 is connected with the control end of the second air inlet angle pedestal valve 21, first row pneumoelectric The gas outlet of magnet valve 31 is connected with the control end of first exhaust angle pedestal valve 17, the gas outlet of second exhaust magnetic valve 33 and second row The control end connection of air horn seat valve 19, the gas outlet of fuel feeding magnetic valve 34 is connected with the control end of fuel feeding angle pedestal valve 23, oil return electricity The gas outlet of magnet valve 32 is connected with the control end of oil return angle pedestal valve 12, the first air inlet angle pedestal valve 18, the institute of the second air inlet angle pedestal valve 21 Tracheae on and first exhaust angle pedestal valve 17, second exhaust angle pedestal valve 19 where blast pipe on be connected in series with section respectively Flow valve 8, the steam vent of the first air inlet electromagnetic valve 22, the steam vent of the second air inlet electromagnetic valve 20, the row of first exhaust magnetic valve 31 Stomata, the steam vent of second exhaust magnetic valve 33, the steam vent of fuel feeding magnetic valve 34, the steam vent of oil return solenoid valve 32, first The exhaust outlet of the exhaust outlet and second exhaust angle pedestal valve 19 that are vented angle pedestal valve 17 is separately installed with for eliminating disappearing for exhaust sound Sound device 14.
Though the above-mentioned air pressure-loading fueller for piston cooling nozzle performance test stand will not cause machine oil to produce Temperature rise and the regulation for realizing charge oil pressure, but because it is controlled using the compressibility of air and air inlet, the flow velocity being vented The loading of charge oil pressure, rate of debarkation are exported, for the piston cooling nozzle of different model, loading required for experiment test, Rate of debarkation requires different, it is therefore desirable to the flow velocity debugging of corresponding air inlet, exhaust is carried out, due to needing the piston of experiment test Cooling nozzles product type is more, it is necessary to often change the product type of piston cooling nozzle, be so accomplished by often carrying out air inlet, The flow velocity debugging of exhaust, during its operating cost, makes troubles to user.
Second, using the hydraulic regulating device based on stepper motor, as shown in Fig. 2 oil channel structures mainly include outer supply Source of the gas 120, air pressure adjustment unit 121, supply air line 123, air inlet electromagnetic valve 1, air inlet angle pedestal valve 1, air inlet pipeline One 125, exhaust solenoid valve 1, exhaust angle pedestal valve 1, gas exhaust piping 1, air inlet electromagnetic valve 2 134, air inlet angled seat Valve 2 102, air inlet pipeline 2 135, exhaust solenoid valve 2 137, exhaust angle pedestal valve 2 103, gas exhaust piping 2 138, fuel feeding electromagnetism Valve 1, fuel feeding angle pedestal valve 1, oil feed line 1, fuel feeding magnetic valve 2 136, fuel feeding angle pedestal valve 2 110, fuel feed pump Road 2 133, oil return solenoid valve 1, oil return angle pedestal valve 1, return line 1, oil return solenoid valve 2 132, oil return angle Seat valve 2 108, return line 2 131, exhaust silencer 122, air tank 1, air tank 2 112, based on stepping electricity Fuel feeding hydraulic regulating device 117, flow sensor 115, pressure sensor 106, the oil return fuel tank 107 of machine.The oil circuit is supplied by outer Source of the gas provides 6.5bar source of the gas, and the supply gas pressure of setting is adjusted to by air pressure adjustment unit 121, by intake channel to inflation Fuel tank is supplied, and gas pressure, which is promoted in fuel tank, detects medium machine oil to the fuel feeding hydraulic regulating device 117 based on stepper motor Fuel feeding, the stepper motor operation of programme-control fuel feeding hydraulic regulating device 117, obtains the loading to PCN charge oil pressures to be tried, unloads Carry and its loading, rate of debarkation.The detection oil circuit of the oil circuit, the switching control of gas circuit are driven using three mouthfuls of two magnetic valves 2 grades of transmission indirect controls of dynamic pneumatic angle pedestal valve, will not cause detection medium machine oil to produce temperature rise.
But, above-mentioned second of oil channel structures are during leakage rate, Opening pressure, closing presure test is carried out, it is necessary to slow Slow loading, unloading, otherwise test accuracy can not meet index request, and it detects that the used time is most about 20s/ parts, detection efficiency soon It is still not ideal enough.
The content of the invention
The purpose of the present invention is that one kind is provided to solve the above problems will not cause detection medium machine oil to produce Temperature rise and the higher quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand of detection efficiency.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand, including base, first Push pedal, hydraulic cylinder, hydraulic cylinder support frame, the first side plate, the second push pedal, the second side plate, thrust plate, movable plate, leading screw, stepping electricity Machine and motor mounting plate, the hydraulic cylinder are installed on the base by the hydraulic cylinder support frame, under the thrust plate End is installed on the base, and the stepper motor is installed on the base by the motor mounting plate, and described first pushes away Connected between plate and second push pedal by first side plate, the two ends of the piston rod of the hydraulic cylinder pass described respectively The cylinder sleeve two ends of hydraulic cylinder and it is connected respectively with first push pedal and second push pedal, the piston of the hydraulic cylinder is located at institute State the position between the stage casing of piston rod and the first oilhole and the second oilhole on the cylinder sleeve, second push pedal and institute State between movable plate and to be connected by second side plate, the movable plate center is provided with screw and the leading screw passes through institute Screw is stated, one end of the leading screw is connected by bearing with the thrust plate, the other end of the leading screw and the stepper motor Rotating shaft connection, centerline axis parallel or overlapping of the central axis of the leading screw with the piston rod.
In said structure, hydraulic cylinder is that one kind reversely utilizes structure, and general hydraulic cylinder is to promote piston rod using hydraulic oil Movement is so as to linear movement output power, and the hydraulic cylinder that the present invention is used is the linear motion powered liquid using piston rod Force feed, so as to carry the hydraulic oil being for experiment for the PCN on piston cooling nozzle performance test stand;Stepper motor and hydraulic cylinder Fuel delivery between the one-to-one relationship that exists, be the emphasis of this quantitative fuel supply flow rate adjusting means, because stepper motor Rotating speed is easy and fast to control, so alloing the fuel delivery of this quantitative fuel supply flow rate adjusting means to realize rapid translating, so as to carry High detection efficiency.
In order to ensure movable plate is steady, move glibly, the quantitative fuel supply flow rate adjusting means also include guide rod and The position being located on copper sliding sleeve, the movable plate around the screw is uniformly provided with multiple guide through hole, multiple copper sliding sleeves Correspond to and be installed in multiple guide through hole respectively, one end of the multiple guide rods parallel with the leading screw is installed on institute State on motor mounting plate, multiple guide rods are corresponded to through multiple copper sliding sleeves respectively.
In order to improve transmission fluency, the two ends of the piston rod of the hydraulic cylinder pass through thrust ball bearing and described the respectively One push pedal and second push pedal connection;One end of the leading screw is connected by deep groove ball bearing with the thrust plate.
The beneficial effects of the present invention are:
The present invention obtains hydraulic cylinder outwards supply and step by being moved reciprocatingly by driving stepper motor hydraulic cylinder piston Stepper motor exploitation speed, hydraulic cylinder effective working section are associated and quantify the implementation of fuel feeding, fuel feeding stream correspondingly Amount is directly by program setting and by step motor control, with charge oil pressure onrelevant, and use hydraulic cylinder piston both sides Chamber replaces the mode of fuel feeding and oil-feed, and the other structures of piston cooling nozzle performance test stand can be coordinated to realize to PCN's Continuous oil supply, significantly improves fuel-flow control precision, speed and detection efficiency, and it detects the used time up to 6.5s/ parts, hence it is evident that be faster than Tradition most fast 20s/ parts.
Brief description of the drawings
Fig. 1 be using conventional pressure adjust fueller piston cooling nozzle performance test stand oil channel structures figure it One;
Fig. 2 be using conventional pressure adjust fueller piston cooling nozzle performance test stand oil channel structures figure it Two;
Fig. 3 is the master of the quantitative fuel supply flow rate adjusting means of the present invention for piston cooling nozzle performance test stand Depending on sectional structure chart, wherein hydraulic cylinder employs main view design sketch and illustrate with dashed lines internal piston and piston rod;
Fig. 4 is bowing for the quantitative fuel supply flow rate adjusting means of the present invention for piston cooling nozzle performance test stand Depending on sectional structure chart, wherein hydraulic cylinder employs main view design sketch and illustrate with dashed lines internal piston and piston rod;
Fig. 5 is the oil of the piston cooling nozzle performance test stand using quantitative fuel supply flow rate adjusting means of the present invention Line structure figure.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Figure 3 and Figure 4, the quantitative fuel supply flow rate of the present invention for piston cooling nozzle performance test stand is adjusted Regulating device, including base 50, the first push pedal 51, hydraulic cylinder 57, hydraulic cylinder support frame 55, the first side plate 69, the second push pedal 60, Two side plates 70, thrust plate 61, movable plate 63, leading screw 62, guide rod 65, copper sliding sleeve 64, stepper motor 66 and motor mounting plate 67, The two ends of hydraulic cylinder 57 are installed on base 50 by hydraulic cylinder support frame 55 respectively, and the lower end of thrust plate 61 is installed on base 50 On, stepper motor 66 is installed on base 50 by motor mounting plate 67, passes through between the first push pedal 51 and the second push pedal 60 Side plate 69 is connected, and the two ends of the piston rod 54 of hydraulic cylinder 57 pass the cylinder sleeve two ends of hydraulic cylinder 57 and respectively by thrust respectively Ball bearing 53 is connected with the first push pedal 51 and the second push pedal 60, and the piston 58 of hydraulic cylinder 57 is located at the stage casing of piston rod 54 and is located at The position between the first oilhole 56 and the second oilhole 59 on the cylinder sleeve, second is passed through between the second push pedal 60 and movable plate 63 Side plate 70 is connected, and the center of movable plate 63 is provided with screw and leading screw 62 is passed through on the screw, movable plate 63 positioned at described Position around screw is uniformly provided with multiple guide through hole, and multiple copper sliding sleeves 64 correspond to be installed on multiple guide through hole respectively Interior, one end of the multiple guide rods 65 parallel with leading screw 62 is installed on motor mounting plate 67, and multiple guide rods 65 are corresponded to respectively Through multiple copper sliding sleeves 64, one end of leading screw 62 is connected by deep groove ball bearing 68 with thrust plate 61, the other end of leading screw 62 with The rotating shaft of stepper motor 66 is excellent by strong connection, the central axis of leading screw 62 and the centerline axis parallel or overlapping of piston rod 54 Select overlapping.
Multiple mounting holes 501 on base 50 are also show in Fig. 3 and Fig. 4.
As shown in Figure 3 and Figure 4, the operation principle of quantitative fuel supply flow rate adjusting means of the present invention is as follows:
After the startup optimization of stepper motor 66, its rotating shaft drives leading screw 62 to rotate, due to being between movable plate 63 and leading screw 62 Threaded connection, so the rotation of leading screw 62 can drive movable plate 63 for linear motion, movable plate 63 can drive the second side plate 70, second Push pedal 60, the first side plate 69, the first push pedal 51, piston rod 54 and the synchronizing moving of piston 58, piston 58 are promoted in hydraulic cylinder 57 Running of hydraulic power oil, and supplied by the first oilhole 56 or the discharge of the second oilhole 59 for the PCN of piston cooling nozzle performance test stand Oil,, can by changing the direction of rotation of stepper motor 66 by the rotating speed for changing stepper motor 66, thus it is possible to vary delivery rate To realize that the fuel feeding hole position between the first oilhole 56 and the second oilhole 59 changes, so as to coordinate piston cooling nozzle performance experiment table The other structures of frame realize continuous oil supply.
Its fuel supply flow rate can be calculated as follows:
Q=SV
In formula:Q is fuel supply flow rate (L/min), and S is hydraulic cylinder effective working section area (cm2), V is hydraulic cylinder 57 The movement velocity (cm/min) of piston 58.
Assuming that the pitch of leading screw 62 is 4mm, the rotating speed of stepper motor 66 is 4000 steps/turn, then the piston 58 of hydraulic cylinder 57 The step-length moved reciprocatingly is 1 μm;If stepper motor 66 is run by 1Hz frequency, the motion speed of the piston 58 of hydraulic cylinder 57 Spend for 0.006cm/min.
Assuming that the cylinder bore of hydraulic cylinder 57 is 154.8mm, the diameter of axle 52mm of piston 58, then its effective working section area is 200cm2.So, when stepper motor 66 is run by 1Hz frequency, this quantifies the fuel feeding output speed of fuel supply flow rate adjusting means For 1mL/min, theoretical error is 0.1%.
From the foregoing, it will be observed that the design parameter by setting each part, it is possible to by controlling the rotating speed of stepper motor 66 (with frequency Rate correspondence) realize the accurate control of delivery rate, and also control process because control unit motor 66 is only needed when greatly shortening Between, so as to improve detection efficiency.
For the ease of further understanding the application effect of this quantitative fuel supply flow rate adjusting means, with reference to quantitative using this Example application is illustrated when the piston cooling nozzle performance test stand of fuel supply flow rate adjusting means is in specific PCN detections:
The oil channel structures of the piston cooling nozzle performance test stand are as shown in figure 5, including outer air supply source 70, air pressure adjustment Device 71, three mouthfuls of two magnetic valves 72, the first angle pedestal valve 74, the second angle pedestal valve 73, the third angle seat valve 79, fourth angle seat valve 80, One fuel tank 75, the second fuel tank 81, flow sensor 76, pressure sensor 77 and PCN (i.e. piston cooling nozzle) 78, outer air supply source 70 and barostat 71 be that four three mouthfuls of two magnetic valves 72 provide sources of the gas, four three mouthfuls of two magnetic valves 72 control the respectively One angle pedestal valve 74, the second angle pedestal valve 73, the switch of the third angle seat valve 79 and fourth angle seat valve 80, the first angle pedestal valve 74, second jiao Seat valve 73, the third angle seat valve 79 and fourth angle seat valve 80 be serially connected be installed on oil pipe and oil pipe two ends, respectively external the It is external on one fuel tank 75 and the second fuel tank 81, the oil pipe between the second angle pedestal valve 73 and the third angle seat valve 79 to be interlinked with PCN 78 The first branch oil pipe and flow sensor 76 and pressure sensor 77 connect is installed on first branch oil pipe;The He of first angle pedestal valve 74 The oil pipe between oil pipe, the third angle seat valve 79 and fourth angle seat valve 80 between second angle pedestal valve 73 quantifies fuel feeding stream with this respectively The first oilhole 56 and the second oilhole 59 of quantity regulating device are connected by the second branch oil pipe.
During operation, the first oilhole 56 of hydraulic cylinder 57 and the second oilhole 59 are alternately to the fuel feeding of PCN 78 and from the first fuel tank 75 or the second supplement oil-feed of fuel tank 81, its detailed process is as follows:
During the forward direction operation of stepper motor 66, the first angle pedestal valves 74 and the third angle seat valve are closed in three mouthfuls of two magnetic valves 72 drivings 79, while open the second angle pedestal valve 73 and fourth angle seat valve 80, the first oilhole 56 of hydraulic cylinder 57 to the fuel feeding of PCN 78, meanwhile, Second oilhole 59 of hydraulic cylinder 57 supplements oil-feed from the second fuel tank 81;
During 66 inverted running of stepper motor, the second angle pedestal valve 73 and fourth angle seat valve are closed in three mouthfuls of two magnetic valves 72 drivings 80, while open the first angle pedestal valve 74 and the third angle seat valve 79, the second oilhole 59 of hydraulic cylinder 57 to the fuel feeding of PCN 78, meanwhile, First oilhole 56 of hydraulic cylinder 57 supplements oil-feed from the first fuel tank 75.
The effective exercise stroke of the piston 58 of hydraulic cylinder 57 be 200mm, inner chamber maximum can oil supply volume be more than 3.3L.Detection 1 PCN 78 use oil mass maximum is no more than 0.2L.Therefore, 1 single direction stroke of the present apparatus is sufficient for detecting 1 PCN 78 Use oil mass.1 detection of PCN 78 is completed, when changing lower 1 PCN 78 of detection, the conversion of programme-control stepper motor 66 operation side To.
The relation of the running frequency of stepper motor 66 and the device fuel supply flow rate is as previously described the corresponding 1mL/min of 1Hz, journey Sequence controls the running frequency of stepper motor 66, you can obtain the fuel supply flow rate needed, and such as motor is run by 1kHz, then its output stream Measure as 1L/min.So it is achieved that the Flow-rate adjustment of quantitative fuel feeding.
Because the response of stepper motor 66 is rapid, the quantitative fuel feeding of setting can be instantaneously reached by the present apparatus, is carried out many Point or the continuous fuel supply flow rate that quantifies adjust also very convenient, quick, so that PCN performances quick detection is there is provided physical condition, inspection It is most about 6.5s/ parts soon to survey the used time, and the operating efficiency of PCN performance tests has been significantly increased.
Above-described embodiment is presently preferred embodiments of the present invention, is not the limitation to technical solution of the present invention, as long as The technical scheme that can be realized without creative work on the basis of above-described embodiment, is regarded as falling into patent of the present invention Rights protection scope in.

Claims (3)

1. a kind of quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand, it is characterised in that:Including Base, the first push pedal, hydraulic cylinder, hydraulic cylinder support frame, the first side plate, the second push pedal, the second side plate, thrust plate, movable plate, silk Thick stick, stepper motor and motor mounting plate, the hydraulic cylinder are installed on the base by the hydraulic cylinder support frame, described to stop The lower end of push pedal is installed on the base, and the stepper motor is installed on the base by the motor mounting plate, institute State between the first push pedal and second push pedal by first side plate connection, the two ends difference of the piston rod of the hydraulic cylinder Pass the cylinder sleeve two ends of the hydraulic cylinder and be connected respectively with first push pedal and second push pedal, the work of the hydraulic cylinder Position between the first oilhole and the second oilhole of the plug positioned at the stage casing of the piston rod and on the cylinder sleeve, described second Connected between push pedal and the movable plate by second side plate, the center of the movable plate is provided with screw and the silk Thick stick passes through the screw, and one end of the leading screw is connected by bearing with the thrust plate, the other end of the leading screw with it is described The rotating shaft connection of stepper motor, centerline axis parallel or overlapping of the central axis of the leading screw with the piston rod.
2. the quantitative fuel supply flow rate adjusting means according to claim 1 for piston cooling nozzle performance test stand, It is characterized in that:The quantitative fuel supply flow rate adjusting means is also included on guide rod and copper sliding sleeve, the movable plate positioned at described Position around screw is uniformly provided with multiple guide through hole, multiple copper sliding sleeves correspond to respectively be installed on it is multiple it is described be oriented to it is logical In hole, one end of the multiple guide rods parallel with the leading screw is installed on the motor mounting plate, multiple guiding Bar is corresponded to through multiple copper sliding sleeves respectively.
3. the quantitative fuel supply flow rate according to claim 1 or 2 for piston cooling nozzle performance test stand adjusts dress Put, it is characterised in that:The two ends of the piston rod of the hydraulic cylinder are respectively by thrust ball bearing and first push pedal and described Second push pedal is connected;One end of the leading screw is connected by deep groove ball bearing with the thrust plate.
CN201710514471.8A 2017-06-29 2017-06-29 Quantitative oil supply flow adjusting device for piston cooling nozzle performance experiment bench Active CN107152387B (en)

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Publication number Priority date Publication date Assignee Title
CN108181084A (en) * 2017-12-11 2018-06-19 西北工业大学 A kind of circular ring shape for sail body is adjustable injection apparatus
CN109488871A (en) * 2019-01-09 2019-03-19 中冶华天工程技术有限公司 A kind of double eccentric hoop automatic aligning refueling nozzles

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GB2221726A (en) * 1988-04-16 1990-02-14 Andrew Thomas Knight Beverage dispenser
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Publication number Priority date Publication date Assignee Title
CN108181084A (en) * 2017-12-11 2018-06-19 西北工业大学 A kind of circular ring shape for sail body is adjustable injection apparatus
CN109488871A (en) * 2019-01-09 2019-03-19 中冶华天工程技术有限公司 A kind of double eccentric hoop automatic aligning refueling nozzles
CN109488871B (en) * 2019-01-09 2020-05-29 中冶华天工程技术有限公司 Double-eccentric ring automatic aligning oil gun

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