CN103398934A - Fabric water-permeability resistance hydrostatic pressure tester as well as control system and testing method thereof - Google Patents
Fabric water-permeability resistance hydrostatic pressure tester as well as control system and testing method thereof Download PDFInfo
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- CN103398934A CN103398934A CN2013103561709A CN201310356170A CN103398934A CN 103398934 A CN103398934 A CN 103398934A CN 2013103561709 A CN2013103561709 A CN 2013103561709A CN 201310356170 A CN201310356170 A CN 201310356170A CN 103398934 A CN103398934 A CN 103398934A
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Abstract
The invention provides a fabric water-permeability resistance hydrostatic pressure tester and a control system and a testing method thereof, which relate to the technical field of mechanical and electronic control, and aim to solve the problems of large structure, high noise and small application range of an existing tester. The fabric water-permeability resistance hydrostatic pressure tester comprises a pressurization water tank, a clamping mechanism, a pressurization/pressure reduction mechanism and a water storage tank, wherein the clamping mechanism and the pressurization water tank are matched for clamping fabrics; the pressurization/pressure reduction mechanism is arranged between the bottom surface of the pressurization water tank and the water storage tank, and the water storage tank is positioned below the pressurization water tank. The control system comprises a display unit, a control module, a clamping control unit, a pressure signal acquisition unit, a water inflow/outflow control unit and a controller. The control method is used for accomplishing the control on clamping, pressure regulating water inflow and outflow and the like of the tester through the control system, and the tester has the characteristics of simple and compact structure, low noise, high efficiency, wide application and the like.
Description
Technical field
The present invention relates to a kind of fabric water permeability resistance test, especially a kind of fabric water permeability resistance hydrostatic pressing test machine, the control system that is used for control fabric water permeability resistance hydrostatic pressing test machine and the method for testing of this fabric water resistant hydrostatic pressing test machine.
Background technology
The hydrostatic test of fabric water permeability resistance is a kind ofly to bear hydrostatic pressing with fabric and represent that water sees through the resistance that fabric is run into.Under standard atmosphere condition, the one side of sample is born one and is continued the hydraulic pressure that rises, until the infiltration of three places is arranged, and record force value at this moment is hydrostatic pressing.The hydrostatic pressing that fabric can bear is larger, and water proofing property or water permeability resistance are better.The hydraulic pressure of test can be above sample or below apply hydraulic pressure.
The fabric water permeability resistance can be to the raising of the technical requirement of textile product and constantly come into one's own along with the demand growth of piece market and industry.Along with the increase in demand of the domestic and international market of China Textile, in order to reach purpose for export, the outlet fabric must meet the index request of foreign trade country to textile in recent years, and hydrostatic pressing is exactly important indicator wherein.The Europe client is higher to the requirement of textile water pressure resistance performance, general minimum requirements is at 5.88KPa, have even at 9.8KPa, and in MILSTD, the water pressure resistance minimum requirements of waterproof product is 13.7KPa, the water pressure resistance of Self-Defense Forces's raincoat is more than 13.75KPa.Therefore, the quality of the water pressure resistance performance of fabric will directly affect the market efficiency of fabric.
The patent of Chinese patent Granted publication 2115357U, application number 91239096.6 discloses a kind of " hydrostatic pressure generating device for fabric impermeability performance test instrument ", this device mainly is comprised of pressure source, cylindrical metal corrugated tube, pressure transducer and hydrostatic force delivery hose, described cylindrical metal corrugated tube and a pressure source link, and cylindrical metal corrugated tube and pressure source form a hydrostatic force generator., although this device has dwindled volume, adopt stepper motor to drive cylindrical ripple pipe mode volume still larger, and have the following disadvantages: 1. the special construction of corrugated tube forms its processed complex of containment structures; 2. after the corrugated tube injected water between upper end and stepper motor palpiform become sealing, and corrugated tube is processed into the hermetically-sealed construction difficulty, sealing is poor,, so the very difficult Quick of force value gets in the fabric that detects the high hydrostatic pressure value, even likely because leak, can't reach the static pressure value; The hermetically-sealed construction of the flexible principle that 3. adopts in corrugated tube work, the pressurized water that injects can only be the water capacity of cylinder corrugated tube, therefore maximum hydrostatic force directly is defined, hydrostatic force can't be adjusted, if detected fabric elasticity is better in this case, because the supercharging hydraulic pressure that injects can't detect final hydrostatic pressing value not, so sensing range is little; 4. stepper motor, complex structure more difficult with connecting of corrugated tube; The phenomenon of howl just appears crying when 5. or pulsed frequency large not due to the moment of stepper motor is higher than the No Load Start frequency; Can produce vibration when low frequency, so noise is large, serious vibration and affect the test result of sensor, thereby causes the test error of hydrostatic pressing value; 6. sensor is contained in the upper end of cylindrical metal corrugated tube, and the cylindrical metal corrugated tube is compressed under the driving of motor downwards, the water surface after compressed has broken away from the detection of sensor and can't detect force value; 7. the pipe fitting that is connected with corrugated tube is the Output pressure flexible pipe, and this structure is at when pressurization flexible pipe compressive deformation and dividing potential drop, so the poor stability of hydrostatic pressing, has increased cost.
Summary of the invention
The present invention is directed to the problems referred to above of existing fabric water permeability resistance hydrostatic pressing proving installation, proposed a kind of fabric water permeability resistance hydrostatic pressing test machine, this hydrostatic pressing test machine has characteristics simple in structure; Proposed a kind of control system of fabric water permeability resistance hydrostatic pressing test machine, this control system can make this hydraulic pressure test machine continuous pressure realize Based Intelligent Control; A kind of method of testing of fabric water permeability resistance hydrostatic pressing test machine has been proposed, this method of testing has easy to operate, efficiency high.
A kind of fabric water permeability resistance hydrostatic pressing test machine is characterized in that described hydrostatic pressing test machine comprises framework, is arranged on pressurization tank, clamp system, pressurization/pressure relief mechanism and catch basin on framework; Described clamp system coordinates fabric is clamped with the end face of pressurization tank; Described pressurization/pressure relief mechanism is arranged between the bottom surface and catch basin of pressurization tank, and described catch basin is positioned at the below of pressurization tank.
Described clamp system comprises pressure strip and drives the driving mechanism that pressure strip moves up and down.Driving mechanism drives when pressure strip moves down and fabric can be clamped between pressure strip and pressurization tank.
Described pressure strip has through hole, described through hole be positioned at the pressurization tank directly over, described through hole equal the to pressurize notch size of tank.Through-hole aperture restriction Main Function is that extending space is provided when the pressurized expansion for fabric, is beneficial to fabric and sees significantly that when water permeability resistance test the elasticity of fabric stretches the situation of rising and the fabric situation that seeps water for test machine has open sightingpiston simultaneously.
Described pressure strip has the clamping surface to lower convexity, establishes rounding between the hole wall of described clamping surface and through hole.Lower protruding clamping surface is used for coordinating fabric being clamped with pressurization tank end face, and rounding is set, and impact is tested to prevent fabric elasticity from stretching damaged while rising.
Described driving mechanism comprises web joint, some guide poles and is fixed on actuator on framework, described some guide poles are slidably arranged in framework and upper end and pressure strip are connected, described web joint is connected in the middle part of some guide poles, and described actuator can drive some guide poles of web joint drive and move up and down.
Described framework is provided with guide holder, and described actuator is installed on guide holder.
Described some guide poles are slidably arranged on guide holder, and the lower end of some guide poles has limited block.When guide pole slided upward, limited block prevented the mobile excess of stroke.
Described actuator comprises the motor that is installed on guide holder, by shaft coupling, is connected to the screw mandrel on motor output shaft and is installed in nut on web joint, and described screw mandrel coordinates with nut.The rotation of motor moves up and down web joint by the cooperation of screw mandrel and nut, thereby drive some guide poles drive pressure strips, moves.
The second structure: described actuator comprises the motor that is installed on guide holder, be connected to the gear on motor output shaft and vertically be installed in tooth bar on web joint, and described wheel and rack coordinates.The rotation of motor moves up and down web joint by the cooperation of gear and tooth bar, thereby drive some guide poles drive pressure strips, moves.
The present invention except two kinds of above-mentioned actuators, can directly drive by the mode of hydraulic pressure or air pressure web joint drive guide pole and move.
Offer deep-slotted chip breaker on the end face of described pressurization tank, be provided with O-ring seal in described deep-slotted chip breaker.O-ring seal is O-ring seals, and while being placed on deep-slotted chip breaker, O-ring seal exposes pressurization tank summit portion less than 1/2nd circular arcs, greater than three/three-arc, it is mainly stressed to the deep-slotted chip breaker both sides when this is arranged on O-ring seal and is extruded, reduced the extruding with the deep-slotted chip breaker notch, extend the serviceable life of O-ring seal, improve sealing property.When the clamping surface on pressure strip compressed fabric with the tank end face that pressurizes, O-ring seal played the effect that clamps and seal, and guaranteed that the water that fabric is compacted, tank is interior does not overflow between pressurization tank and pressure strip.
The side direction of described pressurization tank is provided with overflow groove.This overflow groove is used for reclaiming because testing careless and excessive water droplet.
Described pressing mechanism comprises the water inlet pipe that connects catch basin and pressurization tank, is arranged on the peristaltic pump on water inlet pipe, and described water inlet pipe is arranged on the bottom surface of pressurization tank.When peristaltic pump was opened, the water in catch basin was sent in the pressurization tank by water inlet pipe, and the water in the pressurization tank increases gradually.
Described pressure relief mechanism comprises the rising pipe that connects catch basin and pressurization tank, is arranged on the blowdown valve on rising pipe, and described rising pipe is arranged on the bottom surface of pressurization tank.When blowdown valve was opened, the water in the pressurization tank was expelled back in catch basin by rising pipe, and the water in the pressurization tank is by reducing.
The bottom surface of described pressurization tank is provided with sensor.This sensor is pressure transducer, the pressure of pressurization tank during for detection of the fabric water test.
The top of described catch basin is lower than the bottom surface of pressurization tank.The effect of this setting be when being convenient to open blowdown valve under Action of Gravity Field, be used for being back to catch basin after the water pressure release of supercharging.
Described framework is provided with controller, control panel and control box, described controller is arranged in control box, described control panel is provided with display screen, and described pressure transducer and controller electrically connect, and the pressure that pressure transducer detects can be presented on display screen by controller.
A kind of control system of fabric water permeability resistance hydrostatic pressing test machine, is characterized in that, described control system comprises: be used for the display unit that input and output show; Control module for user's parameters, input operation; Be used for controlling the clamping control module that fabric clamps or unclamps; Be used for gathering the pressure signal collecting unit that the pressure (hydraulic) water trough inner water is pressed; Be used for to regulate the flow of inlet water of pressurization tank or carry out the water inlet that draining controls/go out water control unit; Receive operation control module, pressure signal collecting unit or water inlet/go out the signal of water control unit, and control and clamp control module and fabric is clamped, controls the water inlet control module regulate flow of inlet water, control out water control unit and carry out draining or the signal of pressure acquisition unit collection is sent to the controller that shows on display unit.
Described control module comprises the clamping gauge tap for the power switch of test machine power on/off, the test gauge tap that starts or stops test, the work of control clamp system, and for operation display unit, carries out the operating key that parameter arranges.Power switch has opening power and two functions of powered-down; The test gauge tap is used for starting or suspending at any time the applied voltage test function midway, particularly can stop pressurization but not pressure release with stopping testing button when having three place's water droplets to ooze out, and keeps the hydrostatic pressing value 10～20 minutes; Clamp gauge tap and have the starter motor forward or reverse, and control three functions of motor stalling.
Described clamping control module comprises for the control circuit of controlling clamp system motor forward and backward and time-out, the travel switch of detection clamp system stroke.Be closed condition under the travel switch normal condition, while clamping gauge tap by forward, control circuit is activated, the motor forward, and pressure strip moves down, and until touch travel switch, control circuit is disconnected, and motor stops operating, and this moment, fabric was clamped; While clamping gauge tap by counter-rotating, control circuit is activated, motor reversal, and pressure strip moves up, and until touch travel switch, control circuit is disconnected, and motor stops operating, and this moment, clamp system was got back to initial position; , clamp gauge tap and pressed to while suspending in normal implementation when control circuit, control circuit disconnects, and motor stops operating, the clamp system break-off.
Described pressure signal collecting unit comprises pressure transducer, signal conditioning circuit, analog to digital conversion circuit, after the simulated pressure signal that described pressure transducer detects is processed by signal conditioning circuit, by digital to analog converter, convert digital signal to and flow to controller.
Described signal conditioning circuit comprises signal amplification circuit and signal filter circuit.Signal amplifies the signal that mainly will gather and is amplified on the required range of analog to digital converter, and, by the signal filter circuit filtering interference signals, guarantees the degree of accuracy of signal.
Described water inlet control module comprises digital regulation resistance, and described controller is adjusted the discharge of peristaltic pump by adjusting digital regulation resistance.
Also be connected with hummer and/or printer on described controller.When hummer is used for button operation and spacing touching, send prompt tone, confirm to trigger.The mean value of the test fabric upper surface when printer is used for printing test or the rising water pressure speed of lower surface, hydraulic pressure and fabric hydraulic pressure test result, testDate etc.
A kind of method of testing of fabric water permeability resistance hydrostatic pressing test machine, is characterized in that, comprises the following steps:
(1) open test machine, preset the rising water pressure speed of peristaltic pump by operating key;
(2) will test with fabric and flatten and cover on the pressurization tank;
(3) starter motor forward, clamp system move down by pressure strip fabric are clamped on the pressurization tank, and make fabric and pressurization tank form a closed environment;
(4) peristaltic pump is opened to the pressurization of pressurization tank,, until fabric face has the infiltration of three places, closes peristaltic pump this moment, watches the force value of pressure transducer detection from display screen, and records force value;
(5) peristaltic pump stops after 10 to 20 minutes controller and starts blowdown valve and open, and 1/3 to 1/2 water in the pressurization tank is discharged, and close blowdown valve;
(6) starter motor counter-rotating, unclamp clamp system, takes out fabric;
(7) powered-down, blowdown valve is opened, and the water in the pressurization tank drains.
In described step (4), when the water in catch basin being delivered to the pressurization tank after peristaltic pump is opened, the pressure constantly that pressure transducer detects sends controller to and calculates rising water pressure speed, and with default rising water pressure speed, compare, readjust the discharge in next cycle of peristaltic pump.
Can repeat (1) to (6) step after described step (6) operation and carry out the one or many test of various fabrics or a kind of fabric.
Add in advance suitable quantity of water before described fabric is clamped in the pressurization tank, the described water yield that adds in advance is concordant with pressurization tank end face.Add in advance water can improve the efficiency of test, too much air in the tank of avoiding simultaneously pressurizeing, while causing test, pressurization tank Air pressure is excessive.
The invention has the beneficial effects as follows:
(1) this test machine adopts the clamp system, design of lifting pressurization/pressure relief mechanism and the pressure detection mechanism at the pressure (hydraulic) water trench bottom, thus overall volume is little, structure simple gather, process install easy, easy to operate;
(2) the present invention realizes the clamping of fabric by the clamp system of fixed pressurization tank and control automatically, and fabric is clamped rear stable, reliable;
When (3) water inlet is controlled, rising water pressure speed can with preset value after regulate, and can add continuously water to boost, thus the testing efficiency of this test machine hydrostatic pressing high, boost that space is large, complete machine is applied widely; And adopt peristaltic pump automatically to regulate the inflow of pressurization tank, it is higher that noise is low, discharge is adjusted precision sensitive, the hydrostatic pressing test;
While (4) going out water management, adopt the method for segmentation water outlet, can effectively improve repeatedly the hydrostatic pressing testing efficiency of fabric, reduce testing cost;
(5) user can directly observe the infiltration situation of fabric and the force value in when infiltration by the through hole on pressure strip and display screen, so result viewing is convenient.
Description of drawings
Fig. 1 is the structural representation of test machine of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the partial structurtes schematic diagram of test machine of the present invention.
Fig. 4 is the control system structural representation of test machine of the present invention.
Number in the figure, clamp system 1, pressure strip 11, through hole 11a, clamping surface 11b, pressurization tank 12, overflow groove 121, deep-slotted chip breaker 122, O-ring seal 123, guide pole 13, guide holder 14, limited block 15, screw mandrel 16, motor 17, shaft coupling 171, web joint 18, nut 19, pressurization/pressure relief mechanism 2, blowdown valve 21, peristaltic pump 22, pressure transducer 23, water inlet pipe 24, rising pipe 25, catch basin 3, framework 4, back up pad 41, feet 42, control box 5, controller 51, control panel 52, display screen 521, button 522; Printer 6, hummer 7, filler pipe 8, display unit 101, test gauge tap 106, power switch 107, clamping gauge tap 108, operating key 109, control circuit 110, travel switch 1, travel switch 2 112, analog to digital conversion circuit 113, signal amplification circuit 114, signal filter circuit 115, digital regulation resistance 116, peristaltic pump driver 117.
Embodiment
Further illustrate the present invention below in conjunction with accompanying drawing.
Embodiment one:
With reference to Fig. 1, Fig. 2 and shown in Figure 3, a kind of fabric water permeability resistance hydrostatic pressing test machine of the present invention, comprise framework 4, pressurization tank 12, clamp system 1, pressurization/pressure relief mechanism 2 and catch basin 3.
Framework 4 comprises back up pad 41 and feet 42, and back up pad 41 is positioned at the top of feet 42, at the middle part of feet 42, is installed with guide holder 14.Offer through hole on back up pad 41, the pressurization tank 12 of tubular is arranged in through hole and is fixed on back up pad 41, and the bottom surface of pressurization tank 12 is arranged on the below of back up pad 41, but is positioned at the top of guide holder 14; Offer deep-slotted chip breaker 122 on the end face of pressurization tank 12, be provided with O-ring seal 123 in deep-slotted chip breaker 122, O-ring seal 123 is O-ring seals, and while being placed on deep-slotted chip breaker 122, O-ring seal 123 exposes pressurization tank 12 summit portions less than 1/2nd circular arcs, it is mainly stressed along deep-slotted chip breaker 122 both sides when this is arranged on O-ring seal 123 and is extruded, reduce the extruding with deep-slotted chip breaker 122 notches, extended the serviceable life of O-ring seal 123.The side direction of pressurization tank 12 is provided with overflow groove 121, and this overflow groove 121 is used for reclaiming because testing careless and excessive water droplet; Offer three threaded holes that run through bottom surface on the bottom surface of pressurization tank 12: a threaded hole setting pressure sensor 23, for detection of the hydraulic pressure in pressurization tank 12; A threaded hole is installed into waterpipe jointing, and water inlet pipe 24 is connected with pressurization tank 12; A threaded hole is installed the rising pipe interface, and rising pipe 25 is connected with pressurization tank 12.
With reference to Fig. 1 and 3, clamp system 1 comprises pressure strip 11 and drives the driving mechanism that pressure strip 11 moves up and down.
Driving mechanism comprises web joint 18, four guide poles 13 and is fixed on actuator on framework 4, upper end and pressure strip 11 that four guide poles 13 are slidably arranged in four guide poles 13 on back up pad 41 and guide holder 14 are connected, the lower end of four guide poles 13 is respectively equipped with limited block 15, can certainly be to be connected on the spacing larger limited block 15 of same, while making guide pole 13 upward sliding, prevent the mobile excess of stroke.Be installed with the web joint 18 that vertical four guide poles, 13 axis arrange at the middle part of four guide poles 13, web joint 18 centre positions are installed with a nut 19.Actuator is installed on guide holder 14, actuator in the present invention comprises the motor 17 that is installed on guide holder 14, by shaft coupling 171, is connected to the screw mandrel 16 on motor 17 output shafts and is installed in nut 19 on web joint 18, and screw mandrel 16 passes web joint 18 and is threaded with nut 19.The circumferential rotation of motor 17 output shafts changes into moving up and down of nut 19 by the cooperation of screw mandrel 16 and nut 19, and namely web joint 18 moves up and down, thereby drive four guide poles, 13 drive pressure strips 11, moves up and down, and realizes the clamping of fabric and unclamps.Can certainly directly drive by the mode of hydraulic pressure or air pressure web joint 18 drive guide poles 13 moves.
Pressurization/pressure relief mechanism 2 is arranged between the bottom surface and catch basin 3 of pressurization tank 12.Pressing mechanism comprises the water inlet pipe 24 that connects catch basin 3 and pressurization tank 12, is arranged on the peristaltic pump 22 on water inlet pipe 24, and this peristaltic pump 22 is fixed on framework 4, and water inlet pipe 24 1 ends are connected on the bottom surface of pressurization tank 12, and the other end is connected on catch basin 3.When peristaltic pump 22 was opened, the water in catch basin 3 was pumped in pressurization tank 12 by water inlet pipe 24, and the water in pressurization tank 12 increases gradually.Pressure relief mechanism comprises the rising pipe 25 that connects catch basin 3 and pressurization tank 12, is arranged on the blowdown valve 21 on rising pipe 25, and rising pipe 25 1 ends are connected on the bottom surface of pressurization tank 12, and the other end is connected on catch basin 3.When blowdown valve 21 was opened, the water in pressurization tank 12 was expelled back in catch basin 3 by rising pipe 25, and the water in pressurization tank 12 is by reducing.
The top of catch basin 3 is provided with filler pipe 8; When not needing catch basin 3 is added water, can, by closing the water intaking valve on filler pipe 8, thereby being formed, catch basin 3 seal; The side direction of catch basin 3 offers two holes: one arranges the water inlet pipe interface, is used for being connected with water inlet pipe 24, and another one sets out waterpipe jointing, is used for being connected with rising pipe 25; The top of catch basin 3 is lower than the bottom surface of pressurization tank 12, the effect of this setting be when being convenient to open blowdown valve 21 under Action of Gravity Field, be used for being back to catch basin 3 after the water pressure release of supercharging, the bottom of catch basin 3 can set out water valve, is used for the water of catch basin 3 is discharged.
For realizing Based Intelligent Control, be provided with control box 5, controller 51 and control panel 52 on framework 4, controller 51 is arranged in control box 5, and control panel 52 comprises button 522 and display screen 521; Power switch 107 on button 522 and control module, clamp gauge tap 108, operating key 109, the corresponding setting of test gauge tap 106; Operating key 109 comprises left and right, reaches confirmation totally five keys up and down; Pressure transducer 23 electrically connects with controller 51, and the pressure that pressure transducer 23 detects can be presented on display screen 521 by controller 51.Can power switch 107, clamping gauge tap 108, test gauge tap 106 and the operating key 109 of test machine be operated by the button 522 on control panel 52.
Principle of work of the present invention: place an O-ring seal 123 on the deep-slotted chip breaker 122 of pressurization on tank 12, and will test with fabric and flatten and be layered on pressurization tank 12, fabric needs the external diameter greater than the tank 12 that pressurizes; By operation on the button 522 at control panel 52, controller 51 starter motors 17 move down clamp system 1, until pressure strip 11 is clamped in fabric between pressure strip 11 and pressurization tank 12, make fabric lower surface and pressurization tank 12 form a closed environment, this moment, motor 17 stopped motor 17 runnings; Controller 51 is opened, peristaltic pump 22 water inlets, peristaltic pump 22 is sent in pressurization tank 12 by water inlet pipe 24 from catch basin 3 according to the rising water pressure speed that controller 51 presets, carry out data for the pressurization tank data that 12 increase pressure send according to pressure transducer 23 with Time Controller 51 and process, the flooding parameter default with controller 51 compares the inflow of readjusting peristaltic pump 22; So iterative cycles is controlled the hydraulic pressure increment of pressurization tank 12 automatically, until the hydraulic pressure in pressurization tank 12 increases to fabric face, the infiltration of three places is arranged, close peristaltic pump 22, stop peristaltic pump 22 and send water to pressurization tank 12, the hydraulic pressure that record from pressure transducer 23 this moment is fabric water permeability resistance hydrostatic pressing value.After test machine detects,, according to the time default on controller 51, automatically start and control blowdown valve 21 and open, perhaps manually opened blowdown valve 21, the water in pressurization tank 12 is back to catch basin 3 under the effect of gravity; After pressure release was completed, controller 51 was issued an order and is opened motor 17, and motor 17 will move on clamp system 1,, until pressure strip 11 breaks away from pressurization tank 12 original position that arrives before starting, completed the hydrostatic pressing test.
Embodiment two:
Actuator in the present embodiment comprises the screw mandrel 16 that is rotatably connected on guide holder 14 and the nut 19 that is installed on web joint 18, and the upper end of screw mandrel 16 coordinates with nut 19, and the lower end of screw mandrel 16 is provided with turning handle.The circumferential rotation of screw mandrel 16 makes nut 19 move up and down along screw mandrel 16, and namely web joint 18 moves up and down, thereby drive four guide poles, 13 drive pressure strips 11, moves up and down, and realizes the clamping of fabric and unclamps.Other structure in the present embodiment is identical with embodiment one.
Embodiment three:
Actuator in the present embodiment comprises the motor 17 that is installed on guide holder 14, be connected to the gear on motor 17 output shafts and vertically be installed in tooth bar on web joint 18, wheel and rack coordinates, the circumferential rotation of motor 17 output shafts changes into moving up and down of tooth bar by the cooperation of gear and tooth bar, be that web joint 18 moves up and down, move up and down thereby drive four guide poles, 13 drive pressure strips 11, realize the clamping of fabric and unclamp.Other structure in the present embodiment is identical with embodiment one.
Embodiment four:
Actuator in the present embodiment comprises that be rotatably connected on gear on guide holder 14 and the gear that are installed on guide holder 14 are fixed and are connected to web joint 18 upper racks, is connected with the handle that can driven gear rotates on gear.After rotating by manual band fixed handle, the gear driven tooth bar moves up and down, and namely web joint 18 moves up and down, thereby drive four guide poles, 13 drive pressure strips 11, moves up and down, and realizes the clamping of fabric and unclamps.Other structure in the present embodiment is identical with embodiment.
Embodiment five:
With reference to shown in Figure 4, the control system of this fabric water permeability resistance hydrostatic pressing test machine is in the fabric water permeability resistance hydrostatic pressing test machine of embodiment one and embodiment three, and this control system comprises controller 51, clamps control module, pressure signal collecting unit, water inlet/go out water control unit, display unit 101, control module, hummer 7, printer 6.Controller 51 is singlechip controller, singlechip controller can receive control module, pressure signal collecting unit or water inlet/the go out signal of water control unit 105/106, and controls and clamp control module and fabric is clamped, controls the water inlet control module regulate flow of inlet water, control out water control unit and carry out draining, the signal of pressure acquisition unit collection is sent on display unit 101 and shows or the signal of control module input is processed.
The content of display unit 101 can be presented on display screen 521, this display unit 101 mainly comprises pressure demonstration, the flow indication of peristaltic pump 22, the rising water pressure speed setting of peristaltic pump 22, the start/stop of peristaltic pump 22, the close/open of blowdown valve 21, the test surfaces of fabric, the testDate of the tank 12 that pressurizes, and test result and mean value when after off-test, test machine is closed automatically.
Control module, be arranged on control panel 52, comprise the clamping gauge tap 108 for the power switch 107 of controlling the test machine power on/off, the test gauge tap 106 that is used for starting or stoping test machine, 1 work of control clamp system, and for operation display unit 101, carry out the operating key 109 that parameter arranges.When power switch 107 is in open mode, the test machine energising; While being in closed condition, the test machine outage.When test gauge tap 106 started, peristaltic pump carried out the supercharging test; When test occurs that three place's water droplets overflow, close test gauge tap 106, peristaltic pump suspends water inlet, keep the fixing hydraulic pressure value of pressurization tank 12 1 approximately after 10～20 minutes controller 51 automatically start blowdown valve 21 and carry out pressure release.Clamping gauge tap 108 has starter motor 17 forward or reverse, reaches and control three functions of motor 17 stall: as shown in Figure 2, when clamping gauge tap 108 is pressed the F key, motor 17 forwards, web joint 18, four guide poles 13, pressure strips 11 move down; When clamping gauge tap 108 is pressed the R key, motor 17 counter-rotatings, web joint 18, four guide poles 13, pressure strips 11 move up; When clamping gauge tap 108 was pressed the S key, motor 17 stopped operating, and web joint 18, four guide poles 13, pressure strips 11 stop lifting.Operating key 109 comprises left and right, reaches confirmation totally five keys up and down, operates this left and right, four keys in up and down can be selected the content in display unit 101, and the acknowledgement key by centre can be confirmed or by controller 51 execution the content of selecting.
Clamp control module and be used for the clamping of control fabric or unclamp, clamp control module and comprise for the control circuit 110 of controlling clamp system 1 motor 17 forward and backwards and time-out, the travel switch of motor driver and control clamp system 1 stroke.The torque ratio required due to clamp system 11 is larger, and the stepper motor 17 of the larger statical moment of required power goes to carry out, and by single-chip microcomputer and motor driver cooperating, thereby realizes the stable start and stop of motor 17.
Clamping gauge tap 108 coordinates the forward that can realize motor 17, reverses and stop operating with control circuit 110.Travel switch comprises travel switch 1 and travel switch 2 112, and the signal of travel switch 1 and travel switch 2 112 can pass to controller 51, and original state is all closed condition; Travel switch 1 is arranged on the end face of pressurization tank 12, and is positioned at O-ring seal 123 outsides on pressurization tank 12; When clamping gauge tap 108 is pressed the F key, control circuit 110 is activated, motor 17 forwards, pressure strip 11 moves down, and the clamping surface 11b of pressure strip 11 touches with the end face of pressurization tank 12, and clamping surface 11b presses travel switch 1 in top, travel switch 1 disconnects, control circuit 110 is disconnected, and motor 17 stops operating, and this moment, fabric was clamped; Travel switch 2 112 is arranged on guide holder 14, when clamping gauge tap 108 is pressed the R key, control circuit 110 is activated, motor 17 counter-rotatings, and pressure strip 11 moves up, the limited block 15 of guide pole 13 lower ends and guide holder 14 touchings, travel switch 2 112 is pressed on limited block 15 2 tops, and travel switch 2 112 is opened, and control circuit 110 is disconnected, motor 17 stops operating, and this moment, clamp system 1 was got back to initial position; In normal implementation, when clamping gauge tap 108 was pressed the F key, control circuit 110 disconnected when control circuit 110, and motor 17 stops operating, clamp system 1 break-off.
the pressure signal collecting unit is used for gathering the hydraulic pressure in pressurization tank 12, the pressure signal collecting unit comprises pressure transducer 23, signal conditioning circuit, analog to digital conversion circuit 113, signal conditioning circuit comprises signal amplification circuit 114 and signal filter circuit 115, the signal that the simulated pressure signal that pressure transducer 23 detects will gather by signal amplification circuit 114 is amplified on the required range of analog to digital conversion circuit 113, and by converting digital signal to and flow to controller 51 by analog to digital conversion circuit 113 after signal filter circuit 115 filtering interference signals, the force value that controller 51 will detect is sent in display unit 101 and shows, in order to can observe accurately in real time the force value in pressurization tank 12.
The water inlet control module is used for regulating the flow of inlet water of pressurization tank 12, and the water inlet control module comprises digital regulation resistance 116, peristaltic pump driver 117; Middle controller 51 of the present invention changes the magnitude of current of peristaltic pump 22 by digital regulation resistance 116, thereby adjust the discharge of peristaltic pump 22 in order in time adjust hydraulic pressure in pressurization tank 12, the application of digital regulation resistance 116 has that degree of regulation is high, noise is low, the characteristics of long working life.The control of peristaltic pump 22 discharges is the hydraulic pressure that records by pressure transducer 23 in Quick Acquisition supercharging groove according to constantly in whole control program, and by controller, calculate rising water pressure speed, this rising water pressure speed and default rising water pressure rate value are compared, adjust thus the controlled quentity controlled variable of digital regulation resistance 116, thereby regulate the uninterrupted of peristaltic pump 22, so that the rising water pressure rate in the tank 12 that will pressurize is constant in setting value.The driving of peristaltic pump 22 is regulated the speed flow by digital regulation resistance 116 and driver 117 operations.
Go out water control unit, going out water control unit opens or closes for controlling blowdown valve 21, after the hydrostatic pressing that detects fabric, singlechip controller is controlled out water control unit according to the default time and is started blowdown valve 21, and the water in pressurization tank 12 is discharged in catch basin 3.
Also be connected with hummer 7 and/or printer 6 on described controller 51.When hummer 7 is used for button operation and spacing touching, send prompt tone, confirm to trigger.The mean value of the fabric upper surface when printer 6 is used for printing test or the rising water pressure speed of lower surface, test pressure and test result, testDate etc.
Embodiment six:
A kind of method of testing of fabric water permeability resistance hydrostatic pressing test machine comprises the following steps:
(1) the power-on switch 107, manually-operated operating key 109, the rising water pressure speed of default peristaltic pump 22 on the display unit 101 of display screen 521 correspondences;
(2) will test with fabric and flatten and cover on the pressurization tank, and tension;
(3) press the F key that clamps in gauge tap 108, motor 17 forwards start, and clamp system 1 moves down, and by pressure strip 11, fabric are clamped on pressurization tank 12, and make 12 one-tenth one closed environments of fabric lower surface and pressurization tank structure; When the F key in clamping gauge tap 108 is activated, namely fabric not clamped before, controller 51 starts that peristaltic pumps 22 are opened fully and add in advance suitable quantity of water fast in the tank 12 that pressurizes, the described water yield that adds in advance flushes with tank 12 end faces that pressurize.Add in advance water can improve the efficiency of test, too much air in the tank 12 of avoiding simultaneously pressurizeing, while causing test, pressurization tank 12 Air pressure are excessive.
(4) fabric clamped after, peristaltic pump 22 continues to 12 pressurizations of pressurization tank, peristaltic pump 22 is extracted into pressurization tank 12 with the water in catch basin 3, the pressure that pressure transducer 23 detects sends controller 51 to and calculates rising water pressure speed, and with default rising water pressure speed, compare, readjust the flow in 22 next cycle of peristaltic pump until fabric face has the infiltration of three places, close peristaltic pump 22 this moment, watch the force value of pressure transducer 23 detections and record force value from display screen 521, perhaps directly starting printer 6 and select the force of impression values;
(5) peristaltic pump 22 stops after 10 to 20 minutes controller 51 and starts blowdown valves 21 and open, and 1/3 to 1/2 water in pressurization tank 12 is discharged, and close blowdown valve 21; The water section of pressurization in tank 12 discharged, and for fabric hydrostatic pressing test again, prepares, and raises the efficiency, reduces costs, and while avoiding simultaneously clamp system to unclamp, water overflows;
(6) press the R key that clamps in gauge tap 108, motor 17 counter-rotatings start, and pressure strip 11 separates with pressurization tank 12, takes out fabric;
(7) the powered-down switch 107, and blowdown valve 21 is opened, and drain the water in pressurization tank 12.
Can repeat (1) after described step (6) operation and carry out the one or many test of various fabrics or a kind of fabric to (6) step.That is, after once test finishes, can again test by step (1) to step (6) with regard to same fabric another side or same class fabric, perhaps with regard to different fabrics, by step (1) to step (6), carry out the one or many test.Principle of work of the present invention: during original state, pressure strip 11 separates with pressurization tank 12, be positioned at extreme higher position, this moment first power-on switch 107, manually-operated operating key 109 is the rising water pressure speed in default pressurization tank 12 on the display unit 101 of display screen 521 correspondences.Place an O-ring seal 123 on the deep-slotted chip breaker 122 of pressurization tank 12, and will test with the fabric tension and flatten and cover on pressurization tank 12, fabric needs the external diameter greater than the tank 12 that pressurizes.Press the F key that clamps gauge tap on control panel 52, the control circuit 110 that clamps in control module is activated, motor 17 forwards, and clamp system 1 moves down, until travel switch 1 is touched, motor 17 stops operating; At this moment, pressure strip 11 is clamped in fabric between the clamping surface 11b and pressurization tank 12 of pressure strip 11, because the setting of O-ring seal 123, when fabric is clamped, main surface of contact is the clamping surface 11b, O-ring seal 123 of pressure strip 11 end face towards this side of clamping surface 11b and pressurization tank 12, and this is arranged so that fabric lower surface and pressurization tank 12 form closed environments; When the F key in clamping gauge tap 108 is activated, be fabric not clamped before, controller 51 starts that peristaltic pumps 22 are opened fully and add in advance suitable quantity of water fast in pressurization tank 12, and the described water yield that adds in advance flushes with tank 12 end faces that pressurize or a little less than the end face of the tank 12 that pressurizes.the duty fast that controller 51 is directly opened peristaltic pump 22 fully according to the trigger pip of travel switch 1 is adjusted into the duty that compares with default rising water pressure speed, pressure signal collecting unit 106 is started working at this moment, pressure transducer 23 gathers the pressure in pressurization tank 12 constantly, and by signal amplification circuit 114 and signal filter circuit 115, give controller 51, controller 51 calculate the rising water pressure speed and compare with preset value after send signal, and pass through digital regulation resistance 116 and adjust the flow of inlet water of next periodic peristaltic pump 22, peristaltic pump 22 is sent to the water in catch basin 3 in pressurization tank 12 by water inlet pipe 24 according to flow control signal, constantly to fabric, increase pressure, so iterative cycles is controlled the hydraulic pressure increment of pressurization tank 12 automatically, until the hydraulic pressure in pressurization tank 12 increases to fabric face, the infiltration of three places is arranged, close peristaltic pump 22, stop peristaltic pump 22 and send water to pressurization tank 12, the hydraulic pressure that this moment, pressure transducer 23 was surveyed is fabric water permeability resistance hydrostatic pressing value, in the present invention, the infiltration of three places can stop operating peristaltic pump 22 by manual-lock test gauge tap 106 after manual observation, also can signal feedback be quit work by the automatic peristaltic pump 22 of controlling of controller 51 after controller 51 by image acquisition, thereby realize intelligent control.After test machine is once tested end, after time of default 10 to 20 minutes on controller 51, automatically start blowdown valve 21 and open, 1/3 to 1/2 water in pressurization tank 12 is flow back to and flows in catch basin 3; Press the R key that clamps in gauge tap 108, the control circuit 110 that clamps in control module is activated, motor 17 counter-rotatings start, pressure strip 11 rises, until travel switch 2 112 is triggered, namely limited block 15 contacts with travel switch 2 112, this moment, pressure strip 11 was got back to original state, pressure strip 11 separates with pressurization tank 12, takes out fabric, completes a hydrostatic pressing test; Certainly in this course, pressure strip 11 and the nonessential original state that turns back to, the user can observe pressure strip 11 and break away from pressurization tank 12, and by manually pressing the S key that clamps in gauge tap 108, by clamp system 1, stops rising.If also need the further hydrostatic pressing of the same fabric another side of test this moment, the perhaps fabric hydrostatic pressing under the identical rising water pressure speed of different fabrics or different rising water pressure rate behavior, operating personnel can test again by above-mentioned step.After all tests finish, press power switch 107, controller 51 is automatically controlled blowdown valve 21 and is opened, and drains the water in pressurization tank 12; Because pressurization tank 12 is higher than catch basin 3, the water in the pressurization tank is as long as can automatically drain after blowdown valve is opened.In test operation, can manually open test gauge tap 106, signal passes to controller 51 startup peristaltic pumps 22 and send water to arrive pressurization tank 12; Perhaps manually closing test gauge tap 106 signals passes to controller 51 and stops peristaltic pump 22 and send water to pressurization tank 12.
The described content of this instructions embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches conceives the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (10)
1. a fabric water permeability resistance hydrostatic pressing test machine, is characterized in that, described hydrostatic pressing test machine comprises framework, is arranged on pressurization tank, clamp system, pressurization/pressure relief mechanism and catch basin on framework; Described clamp system coordinates fabric is clamped with the end face of pressurization tank; Described pressurization/pressure relief mechanism is arranged between the bottom surface and catch basin of pressurization tank, and described catch basin is positioned at the below of pressurization tank.
2. a kind of fabric water permeability resistance hydrostatic pressing test machine as claimed in claim 1, is characterized in that, described clamp system comprises pressure strip and drives the driving mechanism that pressure strip moves up and down.
3. a kind of fabric water permeability resistance hydrostatic pressing test machine as claimed in claim 2, is characterized in that, described pressure strip has through hole, described through hole be positioned at the pressurization tank directly over, and described through-hole diameter equal the to pressurize notch size of tank; Described pressure strip has the clamping surface to lower convexity, establishes rounding between the hole wall of described clamping surface and through hole.
4. a kind of fabric water permeability resistance hydrostatic pressing test machine as claimed in claim 2, it is characterized in that, described driving mechanism comprises web joint, some guide poles and is fixed on actuator on framework, described some guide poles are slidably arranged in framework and upper end and pressure strip are connected, described web joint is connected in the middle part of some guide poles, and described actuator can drive some guide poles of web joint drive and move up and down; Described framework is provided with guide holder, and described actuator is installed on guide holder; Described some guide poles are slidably arranged on guide holder, and the lower end of some guide poles has limited block; Described actuator comprises the motor that is installed on guide holder, by shaft coupling, is connected to the screw mandrel on motor output shaft and is installed in nut on web joint, and described screw mandrel coordinates with nut.
5. a described a kind of fabric water permeability resistance hydrostatic pressing test machine as any in claim 1 to 4, it is characterized in that, described pressing mechanism comprises the water inlet pipe that connects catch basin and pressurization tank, is arranged on the peristaltic pump on water inlet pipe, and described water inlet pipe is arranged on the bottom surface of pressurization tank; Described pressure relief mechanism comprises the rising pipe that connects catch basin and pressurization tank, is arranged on the blowdown valve on rising pipe, and described rising pipe is arranged on the bottom surface of pressurization tank; The top of described catch basin is lower than the bottom surface of pressurization tank.
6. the control system of a fabric water permeability resistance hydrostatic pressing test machine, is characterized in that, described control system comprises:
Be used for the display unit that input and output show;
Control module for user's parameters, input operation, described control module comprises the clamping gauge tap for the power switch of test machine power on/off, the test gauge tap that starts or stops test, the work of control clamp system, and for operation display unit, carries out the operating key that parameter arranges;
Be used for controlling the clamping control module that fabric clamps or unclamps, described clamping control module comprises controls the travel switch of clamp system stroke for the control circuit of controlling clamp system motor forward and backward and time-out;
Be used for gathering the pressure signal collecting unit that the pressure (hydraulic) water trough inner water is pressed, described pressure signal collecting unit comprises pressure transducer, signal conditioning circuit, analog to digital conversion circuit, after the simulated pressure signal that described pressure transducer detects is processed by signal conditioning circuit, by digital to analog converter, convert digital signal to and flow to controller;
Be used for to regulate the flow of inlet water of pressurization tank or carry out the water inlet that draining controls/go out water control unit;
Controller, be used for to receive operation control module, pressure signal collecting unit or water inlet/go out the signal of water control unit, and control and clamp control module and fabric is clamped, controls the water inlet control module regulate flow of inlet water, control out water control unit and carry out draining or the signal of pressure acquisition unit collection is sent on display unit and shows.
7. the method for testing of a fabric water permeability resistance hydrostatic pressing test machine, is characterized in that, comprises the following steps:
(1) open test machine, preset the rising water pressure speed of peristaltic pump by operating key;
(2) will test with fabric and flatten and cover on the pressurization tank;
(3) starter motor forward, clamp system move down by pressure strip fabric are clamped on the pressurization tank, and make fabric lower surface and pressurization tank form a closed environment;
(4) peristaltic pump is opened to the pressurization of pressurization tank,, until fabric face has the infiltration of three places, closes peristaltic pump this moment, watches the force value of pressure transducer detection from display screen, and records force value;
(5) peristaltic pump stops after 10 to 20 minutes controller and starts blowdown valve and open, and 1/3 to 1/2 water in the pressurization tank is discharged, and close blowdown valve;
(6) starter motor counter-rotating, unclamp clamp system, takes out fabric;
(7) powered-down, blowdown valve is opened, and the water in the pressurization tank drains.
8. the method for testing of fabric water permeability resistance hydrostatic pressing test machine as claimed in claim 7, it is characterized in that, in described step (4), when the water in catch basin being extracted into the pressurization tank after peristaltic pump is opened, the pressure constantly that pressure transducer detects sends controller to and calculates rising water pressure speed, and with default rising water pressure speed, compare, readjust the discharge in next cycle of peristaltic pump.
9. the method for testing of fabric water permeability resistance hydrostatic pressing test machine as claimed in claim 7, is characterized in that, can repeat (1) after described step (6) operation and carry out the one or many test of various fabrics or a kind of fabric to (6) step.
10., as the method for testing of fabric water permeability resistance hydrostatic pressing test machine as described in claim 7 or 8 or 9, it is characterized in that, adds in advance suitable quantity of water before described fabric is clamped in the pressurization tank, the described water yield that adds in advance is concordant with the tank end face that pressurizes.
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| CN201310356170.9A CN103398934B (en) | 2013-08-07 | 2013-08-07 | A kind of fabric water permeability resistance hydrostatic pressing test machine and control system and method for testing |
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| CN104155228A (en) * | 2014-08-08 | 2014-11-19 | 山东省纺织科学研究院 | Tester for detecting permeability of textile exposed to rain |
| CN104390890A (en) * | 2014-11-26 | 2015-03-04 | 温州市大荣纺织仪器有限公司 | Tester for hydrostatic pressure of fabric |
| CN106680183A (en) * | 2016-12-21 | 2017-05-17 | 宁波中物东方光电技术有限公司 | Fabric hydrostatic pressure test system and control method thereof |
| CN107655804A (en) * | 2017-08-26 | 2018-02-02 | 上海曼斐电器贸易有限公司 | A kind of seepage velocity test fixture |
| CN108982331A (en) * | 2018-09-05 | 2018-12-11 | 佛山市尚鸿针织有限公司 | A kind of high accurate textile seepage of water detection device |
| CN110736592A (en) * | 2019-10-16 | 2020-01-31 | 刘美琴 | device for automatically clamping and preventing water leakage for inspecting waterproof effect of waterproof material |
| CN111642833A (en) * | 2020-04-22 | 2020-09-11 | 王峰 | Medical mask production equipment and quality rapid detection method of medical mask |
| CN112067210A (en) * | 2020-09-18 | 2020-12-11 | 潘彬杰 | Cloth leakproofness detection device based on sealed protective clothing safety inspection |
| CN113588442A (en) * | 2021-09-28 | 2021-11-02 | 胜利新大新材料股份有限公司 | Hydrostatic pressure testing machine |
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| CN110736592A (en) * | 2019-10-16 | 2020-01-31 | 刘美琴 | device for automatically clamping and preventing water leakage for inspecting waterproof effect of waterproof material |
| CN110736592B (en) * | 2019-10-16 | 2021-02-09 | 杨绍是 | Device for automatically clamping and preventing water leakage and checking waterproof effect of waterproof material |
| CN111642833A (en) * | 2020-04-22 | 2020-09-11 | 王峰 | Medical mask production equipment and quality rapid detection method of medical mask |
| CN112067210A (en) * | 2020-09-18 | 2020-12-11 | 潘彬杰 | Cloth leakproofness detection device based on sealed protective clothing safety inspection |
| CN113588442A (en) * | 2021-09-28 | 2021-11-02 | 胜利新大新材料股份有限公司 | Hydrostatic pressure testing machine |
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