CN201574910U - Full-digital hydraulic pump detection bench - Google Patents
Full-digital hydraulic pump detection bench Download PDFInfo
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- CN201574910U CN201574910U CN2009203190657U CN200920319065U CN201574910U CN 201574910 U CN201574910 U CN 201574910U CN 2009203190657 U CN2009203190657 U CN 2009203190657U CN 200920319065 U CN200920319065 U CN 200920319065U CN 201574910 U CN201574910 U CN 201574910U
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Abstract
The utility model discloses a full-digital hydraulic pump detection bench, wherein a hydraulic pump to be detected is connected with a variable-frequency control motor (M1), an open type two-way closed circulation loop system is composed of valve blocks (1, 2), filters (LQ1, LQ2), proportional valves (BL1, BL2) and the like, pressure is DeltaP unit (bar); flow quantity is Q unit (L/min); input power is P unit (KW); pressure sensors (YC3, YC4), elliptic gear flowmeters (LL1, LL2), the rotary rate of motor, current sensor (SC1), the pressure, flow quantity and power are transformed into electrical signals of 4-20 mA by those sensors to transmit to a signal conversion module and PLC and then to a process control machine, and the corresponding results are displayed on a computer. The performance of the hydraulic pump to be detected by the detection bench principally includes that whether the hydraulic pump reaches the rated pressure, and reaches the rated flow, volume efficiency, mechanical efficiency and aggregate efficiency at the rated pressure.
Description
[technical field]
The utility model relates to the oil hydraulic pump Detection range, particularly a kind of digital oil hydraulic pump monitor station.
[background technique]
1, the 26S Proteasome Structure and Function of existing equipment
(1) structure detection equipment, as the loading source, is indicated as pressure with shock-proof pressure gauge with the remote manual control relief valve with the driving source of motor as oil pump by one interchange, and the usefulness oval gear flowmeter is as measuring instrument.The elliptic gear flow output signal indicates for secondary meter as flow, add return filter at the return tube place and filter usefulness as oil return, installs the electronics rotational speed meters additional and utilize secondary meter to demonstrate rotary speed on motor reel.
(2) function: the flow that utilizes secondary meter to show, rotating speed and manometric reading are noted the data of same time with the method instantaneous time of manual record, and the substitution formula is calculated volumetric efficiency, performance number etc.
2, existing shortcoming of establishing existence:
(1) pressure structurally; Flow; Rotating speed; Temperature be not digital control can't and microcomputer communication;
(2) artificial deviation can appear during the manual record data;
(3) deviation that also can time of occurrence during manual record;
(4) can't interior at one time accurately several data compare;
(5) check data of making cannot be accomplished microcomputer document process and printing;
(6) can't detect volumetric efficiency, mechanical efficiency, the total efficiency of same time;
(7) can't know oil pump motor, moment of torsion flow, rotating speed is that total efficiency is a maximum value when how much being worth;
(8) pressure, flow, rotating speed, torque are not accomplished digital control and management;
(9) time the during valve events of the control flow rate of hydraulic-pressure pump and motor can't record;
(10) filtrating equipment can't reach the filter precision of hydraulic oil NS6-9 level, and warning device, fluid are not contaminated in advance for filtrating equipment, the situation that equipment also uses;
(11) there is video data in secondary meter, fluctuation, inaccurate phenomenon.
(12) do not realize that automated procedures come experimental liquid oil-pressing pump and motor.
[model utility content]
The purpose of this utility model is, overcomes above-mentioned prior art problems, and a kind of digital oil hydraulic pump monitor station is provided.
In order to achieve the above object, a kind of digital oil hydraulic pump monitor station that the utility model provides, tested oil hydraulic pump B1 is connected with AC speed regulating motor M1, the A chamber of tested oil hydraulic pump B1 is connected with conversion valve block 2, the B chamber is connected with conversion valve block 1, and this tested oil hydraulic pump B1 is connected with pilot pressure valve piece 3 by pipeline X1, X2; Described conversion valve block 1 is connected with conversion valve block 2, form an oil circuit by B chamber gear meter LL1, B cavity pressure proportional pressure control valve BL2 and B cavity pressure filter GL4 successively between the two, this oil circuit is provided with B chamber return pressure sensor YC2, and forming another oil circuit by A chamber gear meter LL2, A cavity pressure proportional pressure control valve BL1 and A cavity pressure filter GL3 successively, this oil circuit is provided with A chamber return pressure sensor YC1; Described pilot pressure valve piece 3 is connected with variable vane pump B2.1 by pilot pressure return filter HL1, the manual relief valve SY1 of slippage pump, slippage pump filter GL1, and is connected with pilot pressure vane pump B2.2 by pilot pressure filter GL2; Described variable vane pump B2.1 is connected with conversion valve block 1 by slippage pump filter GL1, slippage pump outlet shutoff valve JZ3; Described variable vane pump B2.1 and pilot pressure vane pump B2.2 drive by Wechselstrommotor M2; Described A cavity pressure proportional pressure control valve BL1 is connected with A cavity pressure sensor YC3, A cavity pressure table YB1 respectively; Described B cavity pressure proportional pressure control valve BL2 is connected with B cavity pressure sensor YC4, B cavity pressure table YB2 respectively; Described AC speed regulating motor M1 is connected with speed probe SC1; Above-mentioned all the sensors all passes by signal conversion module and is connected with PLC, and described PLC is connected with process control machine.
Described conversion valve block 1 comprises the 3rd cartridge valve CZ3, the 4th cartridge valve CZ4, the 3rd cartridge valve pilot-actuated valve HX3, the 4th cartridge valve pilot-actuated valve HX4, the 4th one-way valve DX4, the 5th one-way valve DX5 and the 6th one-way valve DX6.
Described conversion valve block 2 comprises the first cartridge valve CZ1, the second cartridge valve CZ2, the first cartridge valve pilot-actuated valve HX1, the second cartridge valve pilot-actuated valve HX2, the first one-way valve DX1, the second one-way valve DX2 and the 3rd one-way valve DX3.
Described the 3rd cartridge valve CZ3 is connected with the 3rd cartridge valve pilot-actuated valve HX3, the 4th one-way valve DX4, the 4th cartridge valve CZ4 respectively, and is connected with total oil return cooler SQ1 by total return filter HL2; Described the 4th cartridge valve CZ4 is connected with the B chamber of the 4th cartridge valve pilot-actuated valve HX4, the 4th one-way valve DX4, the 5th one-way valve DX5, the 6th one-way valve DX6 and tested oil hydraulic pump B1 respectively; Described the 3rd cartridge valve pilot-actuated valve HX3 is connected with the 4th cartridge valve pilot-actuated valve HX4, the first cartridge valve pilot-actuated valve HX1, the second cartridge valve pilot-actuated valve HX2 respectively; Described the 4th one-way valve DX4 is connected with A chamber gear meter LL2; Described the 5th one-way valve DX5 is connected with B chamber, the B cavity pressure filter GL4 of tested oil hydraulic pump B1 respectively; Described the 6th one-way valve DX6 is connected with B chamber, the slippage pump outlet shutoff valve JZ3 of tested oil hydraulic pump B1 respectively.
The described first cartridge valve pilot-actuated valve HX1 is connected with the first cartridge valve CZ1, the second cartridge valve pilot-actuated valve HX2 respectively; The described first cartridge valve CZ1 is connected with the first one-way valve DX1, the second cartridge valve CZ2 respectively, and is connected with total oil return cooler SQ1 by total return filter HL2; The described second cartridge valve CZ2 is connected with the A chamber of the first one-way valve DX1, the second cartridge valve pilot-actuated valve HX2, the second one-way valve DX2, the 3rd one-way valve DX3 and tested oil hydraulic pump B1 respectively; The described first one-way valve DX1 is connected with B chamber gear meter LL1; The described second one-way valve DX2 is connected with the A chamber of the 3rd one-way valve DX3, A cavity pressure filter GL3 and tested oil hydraulic pump B1 respectively; Described the 3rd one-way valve DX3 is connected with the A chamber of slippage pump outlet shutoff valve JZ3, tested oil hydraulic pump B1 respectively.
Described pilot pressure valve piece 3 comprises the first pilot pressure solenoid directional control valve HX5, the second pilot pressure solenoid directional control valve HX6, the manual reduction valve SJ1 of first pilot pressure, the manual reduction valve SJ2 of second pilot pressure, the manual relief valve SY2 of pilot pressure, the first pilot pressure table YB3, the second pilot pressure table YB4 and the 3rd pilot pressure table YB5; The described first pilot pressure solenoid directional control valve HX5 respectively with the second pilot pressure solenoid directional control valve HX6, the manual reduction valve SJ1 of first pilot pressure, the manual relief valve SY2 of pilot pressure, and pilot pressure return filter HL1 is connected, and pass through pipeline X1, X2 and be connected with tested oil hydraulic pump B1; The described second pilot pressure solenoid directional control valve HX6 is connected with pilot pressure return filter HL1, the manual relief valve SY2 of pilot pressure, the manual reduction valve SJ1 of first pilot pressure and the manual reduction valve SJ2 of second pilot pressure respectively; The manual reduction valve SJ1 of described first pilot pressure is connected with the manual reduction valve SJ2 of second pilot pressure, the manual relief valve SY2 of pilot pressure and pilot pressure filter GL2 respectively; The manual reduction valve SJ2 of described second pilot pressure is connected with the manual relief valve SY2 of pilot pressure, pilot pressure filter GL2 respectively; The described first pilot pressure table YB3 is inserted between the first pilot pressure solenoid directional control valve HX5 and the manual reduction valve SJ1 of first pilot pressure; The described second pilot pressure table YB4 is inserted between the second pilot pressure solenoid directional control valve HX6 and the manual reduction valve SJ2 of second pilot pressure; Described the 3rd pilot pressure table YB5 is inserted between manual reduction valve SJ2 of second pilot pressure and the manual relief valve SY2 of pilot pressure.
Described monitor station further comprises the AB cavity pressure shuttle valve SF1 that is connected between conversion valve block 1 and the conversion valve block 2.
Described monitor station further comprises fluid level controller YW1, temperature controller WD1 and air filter KQ1.
Useful technique effect of the present utility model is:
Use the ac variable frequency speed regulation motor of digital quantity control when (1) detecting oil pump, rotating speed directly feeds back in the microcomputer.
When (2) detecting oil pump, pressure; Flow; Rotating speed; Torque; Temperature all uses sensor to realize communicating by letter with module and microcomputer.
(3) data capture in microcomputer, collection capacity according to data-signal and argument address is set up mathematical model, by the calculating and the processing of microcomputer control system, in XY two axial coordinates, obtain volumetric efficiency, mechanical efficiency, the total efficiency curve figure of hydraulic-pressure pump and motor.
(4) data all are by sensor and module and microcomputer real-time Communication for Power, can occur artificial deviation and the deviation of time when having avoided the manual record data.
(5) can interior at one time accurately at any time several data compare.
(6) by the calculating and the processing of microcomputer control system, the check data of making reports that data store microcomputer into and do document process and printing.
(7) in the volumetric efficiency of hydraulic-pressure pump, mechanical efficiency, total efficiency curve figure, detect volumetric efficiency, mechanical efficiency, the total efficiency of same time very easily.And can detect at pressure; Flow; Rotating speed; Torque total efficiency when how many values is a maximum value.
Time when (8) detecting the valve events of control flow rate of hydraulic-pressure pump easily in flow, pressue-graph also preserves and record.
(9) filtrating equipment selects for use the 3 μ m filters will output signal during greater than 5bar when pressure reduction, and at this moment fluid does not just have when contaminated in advance more renew cartridge, and fluid reaches the NS6-9 level, makes the hydraulic-pressure pump of test not contaminated.
(10) microcomputer can be stored automated procedures in advance and test hydraulic-pressure pump, has reduced labor intensity.
[description of drawings]
Fig. 1 is the structural drawing of the digital oil hydraulic pump monitor station of the utility model specific embodiment;
Fig. 2 is the enlarged view of conversion valve block 1 among Fig. 1;
Fig. 3 is the enlarged view of conversion valve block 2 among Fig. 1;
Fig. 4 is the enlarged view of pilot pressure valve piece 3 among Fig. 1;
Fig. 5 is pump performance and rotating speed and pressure dependence figure;
Fig. 6 is pump performance and rotation speed relation figure;
Fig. 7 is pump duty and pressure dependence figure;
Fig. 8 pump driving power and flow pressure graph of a relation.
[embodiment]
Below in conjunction with drawings and Examples the utility model is elaborated.
Referring to figs. 1 through Fig. 4 and table 1, the structure of monitor station of the present utility model is as follows:
Tested oil hydraulic pump B1 is connected with AC speed regulating motor M1, and the A chamber of tested oil hydraulic pump B1 is connected with conversion valve block 2, and the B chamber is connected with conversion valve block 1, and this tested oil hydraulic pump B1 is connected with pilot pressure valve piece 3 by pipeline X1, X2; Described conversion valve block 1 is connected with conversion valve block 2, form an oil circuit by B chamber gear meter LL1, B cavity pressure proportional pressure control valve BL2 and B cavity pressure filter GL4 successively between the two, this oil circuit is provided with B chamber return pressure sensor YC2, and forming another oil circuit by A chamber gear meter LL2, A cavity pressure proportional pressure control valve BL1 and A cavity pressure filter GL3 successively, this oil circuit is provided with A chamber return pressure sensor YC1; Described pilot pressure valve piece 3 is connected with variable vane pump B2.1 by pilot pressure return filter HL1, the manual relief valve SY1 of slippage pump, slippage pump filter GL1, and is connected with pilot pressure vane pump B2.2 by pilot pressure filter GL2; Described variable vane pump B2.1 is connected with conversion valve block 1 by slippage pump filter GL1, slippage pump outlet shutoff valve JZ3; Described variable vane pump B2.1 and pilot pressure vane pump B2.2 drive by Wechselstrommotor M2; Described A cavity pressure proportional pressure control valve BL1 is connected with A cavity pressure sensor YC3, A cavity pressure table YB1 respectively; Described B cavity pressure proportional pressure control valve BL2 is connected with B cavity pressure sensor YC4, B cavity pressure table YB2 respectively; Described AC speed regulating motor M1 is connected with speed probe SC1; Above-mentioned all the sensors all passes by signal conversion module and is connected with PLC, and described PLC is connected with process control machine.
Described conversion valve block 1 comprises the 3rd cartridge valve CZ3, the 4th cartridge valve CZ4, the 3rd cartridge valve pilot-actuated valve HX3, the 4th cartridge valve pilot-actuated valve HX4, the 4th one-way valve DX4, the 5th one-way valve DX5 and the 6th one-way valve DX6.
Described conversion valve block 2 comprises the first cartridge valve CZ1, the second cartridge valve CZ2, the first cartridge valve pilot-actuated valve HX1, the second cartridge valve pilot-actuated valve HX2, the first one-way valve DX1, the second one-way valve DX2 and the 3rd one-way valve DX3.
Described the 3rd cartridge valve CZ3 is connected with the 3rd cartridge valve pilot-actuated valve HX3, the 4th one-way valve DX4, the 4th cartridge valve CZ4 respectively, and is connected with total oil return cooler SQ1 by total return filter HL2; Described the 4th cartridge valve CZ4 is connected with the B chamber of the 4th cartridge valve pilot-actuated valve HX4, the 4th one-way valve DX4, the 5th one-way valve DX5, the 6th one-way valve DX6 and tested oil hydraulic pump B1 respectively; Described the 3rd cartridge valve pilot-actuated valve HX3 is connected with the 4th cartridge valve pilot-actuated valve HX4, the first cartridge valve pilot-actuated valve HX1, the second cartridge valve pilot-actuated valve HX2 respectively; Described the 4th one-way valve DX4 is connected with A chamber gear meter LL2; Described the 5th one-way valve DX5 is connected with B chamber, the B cavity pressure filter GL4 of tested oil hydraulic pump B1 respectively; Described the 6th one-way valve DX6 is connected with B chamber, the slippage pump outlet shutoff valve JZ3 of tested oil hydraulic pump B1 respectively.
The described first cartridge valve pilot-actuated valve HX1 is connected with the first cartridge valve CZ1, the second cartridge valve pilot-actuated valve HX2 respectively; The described first cartridge valve CZ1 is connected with the first one-way valve DX1, the second cartridge valve CZ2 respectively, and is connected with total oil return cooler SQ1 by total return filter HL2; The described second cartridge valve CZ2 is connected with the A chamber of the first one-way valve DX1, the second cartridge valve pilot-actuated valve HX2, the second one-way valve DX2, the 3rd one-way valve DX3 and tested oil hydraulic pump B1 respectively; The described first one-way valve DX1 is connected with B chamber gear meter LL1; The described second one-way valve DX2 is connected with the A chamber of the 3rd one-way valve DX3, A cavity pressure filter GL3 and tested oil hydraulic pump B1 respectively; Described the 3rd one-way valve DX3 is connected with the A chamber of slippage pump outlet shutoff valve JZ3, tested oil hydraulic pump B1 respectively.
Described pilot pressure valve piece 3 comprises the first pilot pressure solenoid directional control valve HX5, the second pilot pressure solenoid directional control valve HX6, the manual reduction valve SJ1 of first pilot pressure, the manual reduction valve SJ2 of second pilot pressure, the manual relief valve SY2 of pilot pressure, the first pilot pressure table YB3, the second pilot pressure table YB4 and the 3rd pilot pressure table YB5; The described first pilot pressure solenoid directional control valve HX5 respectively with the second pilot pressure solenoid directional control valve HX6, the manual reduction valve SJ1 of first pilot pressure, the manual relief valve SY2 of pilot pressure, and pilot pressure return filter HL1 is connected, and pass through pipeline X1, X2 and be connected with tested oil hydraulic pump B1; The described second pilot pressure solenoid directional control valve HX6 is connected with pilot pressure return filter HL1, the manual relief valve SY2 of pilot pressure, the manual reduction valve SJ1 of first pilot pressure and the manual reduction valve SJ2 of second pilot pressure respectively; The manual reduction valve SJ1 of described first pilot pressure is connected with the manual reduction valve SJ2 of second pilot pressure, the manual relief valve SY2 of pilot pressure and pilot pressure filter GL2 respectively; The manual reduction valve SJ2 of described second pilot pressure is connected with the manual relief valve SY2 of pilot pressure, pilot pressure filter GL2 respectively; The described first pilot pressure table YB3 is inserted between the first pilot pressure solenoid directional control valve HX5 and the manual reduction valve SJ1 of first pilot pressure; The described second pilot pressure table YB4 is inserted between the second pilot pressure solenoid directional control valve HX6 and the manual reduction valve SJ2 of second pilot pressure; Described the 3rd pilot pressure table YB5 is inserted between manual reduction valve SJ2 of second pilot pressure and the manual relief valve SY2 of pilot pressure.
Described monitor station further comprises the AB cavity pressure shuttle valve SF1 that is connected between conversion valve block 1 and the conversion valve block 2.
Described monitor station further comprises fluid level controller YW1, temperature controller WD1 and air filter KQ1.
Table 1
Please refer to Fig. 5 to Fig. 8 and table 2.
One, experimental liquid press pump principle:
(1) tested the performance of oil hydraulic pump: comprise that mainly can oil hydraulic pump rated pressure, and under rated pressure, can reach rated flow, volumetric efficiency, mechanical efficiency, total efficiency.
(2) being tested oil hydraulic pump connects with the M1 frequency-conversion and speed-regulation motor and formation open type two-ways such as valve piece 1,2 filter LQ1, LQ2 Proportional valve BL1, BL2, closed cycle circuit system, its pressure Δ P unit (bar); Flow Q unit (L/min); Input power P unit (KW);
Pressure transducer YC3, YC4, oval gear flowmeter LL1, LL2, motor speed, current sensor SC1, by these sensors pressure, flow, power transfer become the 420mA electrical signal be transferred to signal conversion module pass to pass to again in the PLC in the process control machine handle after, and accordingly result shown on computers.
(3) hydraulic system pressure is set up: send pressure signal by process control machine and instruct output module, module converts becomes the 0-10V voltage signal to be delivered to the Proportional valve amplifier, the Proportional valve amplifier converts voltage signal again to and gives Proportional valve electromagnet f1 or f2, pressure transducer YC3, YC4 after the system loads, pressure signal is fed back to process control machine, carry out PID by process control machine and calculate conciliation pressure, making actual pressure and setting pressure corresponding consistent, is exactly their formation two-way pressure closed loop control system of Proportional valve BL1 pressure transducer YC3 Proportional valve BL2 pressure transducer YC4.
(4) mensuration of unloaded (zero-pressure) flow Q:
Absolute no load discharge can not record in the hydraulic system, in actual applications, be that opening with each element of system transfers to maximum, native system is that the voltage with Proportional valve BL1, BL2 electromagnet f1, f2 is adjusted to 0V fluid and only overcomes on-way resistance, and this resistance is measured no load discharge Q by oval gear flowmeter after being no more than 1Mpa.
Detecting rotational speed when (5) testing:
Process control machine is adjusted the rotating speed of motor, motor speed, and current sensor SC1 is the signal back process control machine, carry out PID by process control machine and calculate the conciliation rotating speed, make actual speed corresponding consistent, motor M1 rotating speed with the setting rotating speed, current sensor SC1, they constitute the speed closed loop control system.
(6) the flow qv during test pressure measures:
Process control machine is adjusted the rotating speed of motor, configures the pressure of Proportional valve BL1, BL2 again, and under different pressure condition, the flow by LL1, LL2 is exactly qv.
(7) mensuration of experimental liquid press pump volumetric efficiency η v:
ηv＝(Q÷qv)×100％
Top formula substitution process control machine, two variablees of Q, qv are directly put into form and coordinate and calculated η v value.
(8) mensuration of experimental liquid press pump input power P and total efficiency η t:
Input power P=(600 * η t) ÷ (qv * Δ P);
Output power of motor P1=1.732 * U * I * COS φ η;
Be set at then η t=(P1 ÷ P) * 100% of P=P1;
Wherein, η t is a total efficiency; U is motor voltage 380V; I is motor current A;
COS φ η is a motor power (output) factor 0.85.
(9) mensuration of experimental liquid press pump mechanical efficiency η m: η t=η v * η m * 100%
ηm＝ηt÷ηv×100％
Wherein, η t is a total efficiency; η v is a volumetric efficiency; η m is a mechanical efficiency.
Two, experimental liquid press pump asphalt principle
1, test closed type hydraulic pump band slippage pump and be not with two kinds of slippage pumps:
(a) test pump of band slippage pump: the slippage pump B1.1 that sucks oil process test pump from C is input to A, B through unidirectional relief valve B1.2, B1.3 repairing amount;
(b) not with the slippage pump test pump: suck the slippage pump B2.1 of oil through peripheral hardware by D, filtration by the L1.1 oil purifier, loading through relief valve Y1.1, be input to A through one-way valve DX1, one-way valve DX2 is input to B, switch valve CZ3 electromagnet a and CZ4 electromagnet b get electric closing simultaneously, and switch valve CZ1 electromagnet b and switch valve CZ2 electromagnet d dead electricity are opened.
2, bit test in the enclosed pump: switch valve CZ3 electromagnet a and CZ4 electromagnet b dead electricity are opened, switch valve CZ2 electromagnet d, and switch valve CZ1 electromagnet b gets electric closing, and proportional pressure control valve BL1, BL2 get electric loading.At this moment A, B pressure are slippage pump pressure during enclosed pump meta, and A, B pressure should not have high pressure, and then the enclosed pump is not at meta if any high pressure, and that should adjust the enclosed pump wants mechanical meta and hydraulic pressure meta.
(1) if A is oil-feed, B is fuel-displaced, the A chamber is by the slippage pump DFF Direct Fuel Feed, B is fuel-displaced → closes DX2 oppositely to close, and DX4 opens → filter LQ1 filtration → BL2 ratio spill valve loading → low pressure oil enters LL1 flowmeter → DX5 to be opened → and CZ1 gets electric semi-closure CZ3 dead electricity and opens → LQ3 oil return filter → SLQ1 cooling → oil sump tank
(2) if B is oil-feed, A is fuel-displaced, and B chamber slippage pump can DFF Direct Fuel Feed; A is fuel-displaced → and CZ1 gets electric closing → DX1 and oppositely closes → DX3 opens → LQ2 filter filtration → BL1 gets electric loading → low pressure oil and enter LL2 flowmeter → DX6 and open → and CZ2 gets electric closing → CZ4 dead electricity and opens → LQ3 oil return filter → SLQ1 cooling → oil sump tank.
3, enclosed pump closed cycle detects
A is oil-feed, and B is fuel-displaced, A chamber slippage pump fuel feeding
From A, B obtains by SF1 for CZ 4, CZ3, CZ2, CZ1 pilot pressure; Enclosed pump pilot pressure by B2.2 to valve piece 55.2-55.5.
4, pilot pressure output
B2.2 is fuel-displaced to be filled into → SY2 relief valve loading → SJ1 and the SJ2 → selector valve that reduces pressure to GL2, HY1, HY2 output two-way A, B, and with wherein 1 the tunnel arriving X1 and the commutation of X2 enclosed pump, pilot pressure filters the back oil sump tank with oily oil return to HL1.
5, test open hydraulic double pump:
Test pump sucks hydraulic oil from the C mouth, and pressure oil is by a, and the b pump outputs to A, B;
Table 2
Claims (5)
1. digital oil hydraulic pump monitor station, it is characterized in that, tested oil hydraulic pump (B1) is connected with AC speed regulating motor (M1), the A chamber of tested oil hydraulic pump (B1) is connected with conversion valve block (2), the B chamber is connected with conversion valve block (1), (X1 X2) is connected with pilot pressure valve piece (3) this tested oil hydraulic pump (B1) by pipeline; Described conversion valve block (1) is connected with conversion valve block (2), form an oil circuit by B chamber gear meter (LL1), B cavity pressure proportional pressure control valve (BL2) and B cavity pressure filter (GL4) successively between the two, this oil circuit is provided with B chamber return pressure sensor (YC2), and forming another oil circuit by A chamber gear meter (LL2), A cavity pressure proportional pressure control valve (BL1) and A cavity pressure filter (GL3) successively, this oil circuit is provided with A chamber return pressure sensor (YC1); Described pilot pressure valve piece (3) is connected with variable vane pump (B2.1) by pilot pressure return filter (HL1), the manual relief valve of slippage pump (SY1), slippage pump filter (GL1), and is connected with pilot pressure vane pump (B2.2) by pilot pressure filter (GL2); Described variable vane pump (B2.1) is connected with conversion valve block (1) by slippage pump filter (GL1), slippage pump outlet shutoff valve (JZ3); Described variable vane pump (B2.1) drives by Wechselstrommotor (M2) with pilot pressure vane pump (B2.2); Described A cavity pressure proportional pressure control valve (BL1) is connected with A cavity pressure sensor (YC3), A cavity pressure table (YB1) respectively; Described B cavity pressure proportional pressure control valve (BL2) is connected with B cavity pressure sensor (YC4), B cavity pressure table (YB2) respectively; Described AC speed regulating motor (M1) is connected with speed probe (SC1); Above-mentioned all the sensors all passes by signal conversion module and is connected with PLC, and described PLC is connected with process control machine.
2. digital oil hydraulic pump monitor station according to claim 1, it is characterized in that described conversion valve block (1) comprises the 3rd cartridge valve (CZ3), the 4th cartridge valve (CZ4), the 3rd cartridge valve pilot-actuated valve (HX3), the 4th cartridge valve pilot-actuated valve (HX4), the 4th one-way valve (DX4), the 5th one-way valve (DX5) and the 6th one-way valve (DX6);
Described conversion valve block (2) comprises first cartridge valve (CZ1), second cartridge valve (CZ2), the first cartridge valve pilot-actuated valve (HX1), the second cartridge valve pilot-actuated valve (HX2), first one-way valve (DX1), second one-way valve (DX2) and the 3rd one-way valve (DX3);
Described the 3rd cartridge valve (CZ3) is connected with the 3rd cartridge valve pilot-actuated valve (HX3), the 4th one-way valve (DX4), the 4th cartridge valve (CZ4) respectively, and is connected with total oil return cooler (SQ1) by total return filter (HL2); Described the 4th cartridge valve (CZ4) is connected with the B chamber of the 4th cartridge valve pilot-actuated valve (HX4), the 4th one-way valve (DX4), the 5th one-way valve (DX5), the 6th one-way valve (DX6) and tested oil hydraulic pump (B1) respectively; Described the 3rd cartridge valve pilot-actuated valve (HX3) is connected with the 4th cartridge valve pilot-actuated valve (HX4), the first cartridge valve pilot-actuated valve (HX1), the second cartridge valve pilot-actuated valve (HX2) respectively; Described the 4th one-way valve (DX4) is connected with A chamber gear meter (LL2); Described the 5th one-way valve (DX5) is connected with B chamber, the B cavity pressure filter (GL4) of tested oil hydraulic pump (B1) respectively; Described the 6th one-way valve (DX6) is connected with B chamber, the slippage pump outlet shutoff valve (JZ3) of tested oil hydraulic pump (B1) respectively;
The described first cartridge valve pilot-actuated valve (HX1) is connected with first cartridge valve (CZ1), the second cartridge valve pilot-actuated valve (HX2) respectively; Described first cartridge valve (CZ1) is connected with first one-way valve (DX1), second cartridge valve (CZ2) respectively, and is connected with total oil return cooler (SQ1) by total return filter (HL2); Described second cartridge valve (CZ2) is connected with the A chamber of first one-way valve (DX1), the second cartridge valve pilot-actuated valve (HX2), second one-way valve (DX2), the 3rd one-way valve (DX3) and tested oil hydraulic pump (B1) respectively; Described first one-way valve (DX1) is connected with B chamber gear meter (LL1); Described second one-way valve (DX2) is connected with the A chamber of the 3rd one-way valve (DX3), A cavity pressure filter (GL3) and tested oil hydraulic pump (B1) respectively; Described the 3rd one-way valve (DX3) is connected with the A chamber of slippage pump outlet shutoff valve (JZ3), tested oil hydraulic pump (B1) respectively.
3. digital oil hydraulic pump monitor station according to claim 1, it is characterized in that described pilot pressure valve piece (3) comprises the first pilot pressure solenoid directional control valve (HX5), the second pilot pressure solenoid directional control valve (HX6), the manual reduction valve of first pilot pressure (SJ1), the manual reduction valve of second pilot pressure (SJ2), the manual relief valve of pilot pressure (SY2), the first pilot pressure table (YB3), the second pilot pressure table (YB4) and the 3rd pilot pressure table (YB5); The described first pilot pressure solenoid directional control valve (HX5) respectively with the second pilot pressure solenoid directional control valve (HX6), the manual reduction valve of first pilot pressure (SJ1), the manual relief valve of pilot pressure (SY2), and pilot pressure return filter (HL1) is connected, and pass through pipeline (X1, X2) and be connected with tested oil hydraulic pump (B1); The described second pilot pressure solenoid directional control valve (HX6) is connected with pilot pressure return filter (HL1), the manual relief valve of pilot pressure (SY2), the manual reduction valve of first pilot pressure (SJ1) and the manual reduction valve of second pilot pressure (SJ2) respectively; The manual reduction valve of described first pilot pressure (SJ1) is connected with the manual reduction valve of second pilot pressure (SJ2), the manual relief valve of pilot pressure (SY2) and pilot pressure filter (GL2) respectively; The manual reduction valve of described second pilot pressure (SJ2) is connected with the manual relief valve of pilot pressure (SY2), pilot pressure filter (GL2) respectively; The described first pilot pressure table (YB3) is inserted between the first pilot pressure solenoid directional control valve (HX5) and the manual reduction valve of first pilot pressure (SJ1); The described second pilot pressure table (YB4) is inserted between the second pilot pressure solenoid directional control valve (HX6) and the manual reduction valve of second pilot pressure (SJ2); Described the 3rd pilot pressure table (YB5) is inserted between manual reduction valve of second pilot pressure (SJ2) and the manual relief valve of pilot pressure (SY2).
4. digital oil hydraulic pump monitor station according to claim 1 is characterized in that, described monitor station further comprises the AB cavity pressure shuttle valve (SF1) that is connected between conversion valve block (1) and the conversion valve block (2).
5. digital oil hydraulic pump monitor station according to claim 1 is characterized in that, described monitor station further comprises fluid level controller (YW1), temperature controller (WD1) and air filter (KQ1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203190657U CN201574910U (en) | 2009-12-30 | 2009-12-30 | Full-digital hydraulic pump detection bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203190657U CN201574910U (en) | 2009-12-30 | 2009-12-30 | Full-digital hydraulic pump detection bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201574910U true CN201574910U (en) | 2010-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203190657U Expired - Fee Related CN201574910U (en) | 2009-12-30 | 2009-12-30 | Full-digital hydraulic pump detection bench |
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| Country | Link |
|---|---|
| CN (1) | CN201574910U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678532A (en) * | 2011-03-09 | 2012-09-19 | 上海衡仪器厂有限公司 | Infusion pump flow parameter gauge |
| CN102734148A (en) * | 2012-07-04 | 2012-10-17 | 杭州哲达科技股份有限公司 | Water pump type test method |
| CN104454496A (en) * | 2014-12-19 | 2015-03-25 | 上海电气液压气动有限公司 | Open type hydraulic pump load sensitivity testing system |
| CN104454494A (en) * | 2014-12-19 | 2015-03-25 | 上海电气液压气动有限公司 | Testing system for positive and negative rotation performance of closed type hydraulic pump |
| CN106050810A (en) * | 2016-07-23 | 2016-10-26 | 唐山工业职业技术学院 | Hydraulic actuator pollution detection and treatment device |
| CN109540501A (en) * | 2019-01-29 | 2019-03-29 | 福建江夏学院 | It is a kind of for testing the integrated testing stand of guide's pump valve and its working method |
| CN111982367A (en) * | 2020-08-20 | 2020-11-24 | 临沂会宝岭铁矿有限公司 | Mining belt permanent magnetism cylinder power detection device |
| CN114810572A (en) * | 2022-04-19 | 2022-07-29 | 鲁东大学 | Hydraulic pump fault diagnosis method and device |
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- 2009-12-30 CN CN2009203190657U patent/CN201574910U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678532A (en) * | 2011-03-09 | 2012-09-19 | 上海衡仪器厂有限公司 | Infusion pump flow parameter gauge |
| CN102734148A (en) * | 2012-07-04 | 2012-10-17 | 杭州哲达科技股份有限公司 | Water pump type test method |
| CN104454496A (en) * | 2014-12-19 | 2015-03-25 | 上海电气液压气动有限公司 | Open type hydraulic pump load sensitivity testing system |
| CN104454494A (en) * | 2014-12-19 | 2015-03-25 | 上海电气液压气动有限公司 | Testing system for positive and negative rotation performance of closed type hydraulic pump |
| CN104454496B (en) * | 2014-12-19 | 2016-12-07 | 上海电气液压气动有限公司 | Open hydraulic pump load sensitivity test system |
| CN106050810A (en) * | 2016-07-23 | 2016-10-26 | 唐山工业职业技术学院 | Hydraulic actuator pollution detection and treatment device |
| CN109540501A (en) * | 2019-01-29 | 2019-03-29 | 福建江夏学院 | It is a kind of for testing the integrated testing stand of guide's pump valve and its working method |
| CN109540501B (en) * | 2019-01-29 | 2020-07-10 | 福建江夏学院 | Test bed for testing pilot pump valve integration and working method thereof |
| CN111982367A (en) * | 2020-08-20 | 2020-11-24 | 临沂会宝岭铁矿有限公司 | Mining belt permanent magnetism cylinder power detection device |
| CN114810572A (en) * | 2022-04-19 | 2022-07-29 | 鲁东大学 | Hydraulic pump fault diagnosis method and device |
| CN114810572B (en) * | 2022-04-19 | 2023-08-22 | 鲁东大学 | Hydraulic pump fault diagnosis method and device |
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Granted publication date: 20100908 Termination date: 20171230 |