CN104655372A - Air tightness detection system for pantograph slide plate and detection method thereof - Google Patents
Air tightness detection system for pantograph slide plate and detection method thereof Download PDFInfo
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- CN104655372A CN104655372A CN201310578472.0A CN201310578472A CN104655372A CN 104655372 A CN104655372 A CN 104655372A CN 201310578472 A CN201310578472 A CN 201310578472A CN 104655372 A CN104655372 A CN 104655372A
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Abstract
The invention discloses an air tightness detection system for a pantograph slide plate. The air tightness detection system comprises a work bench, a clamp, at least one air source, a fluidness detection device, a tightness detection device, and an on-off device, wherein the clamp is installed on the work bench and used for installing and clamping the pantograph slide plate; the at least one air source is installed below the work bench; the input end of the fluidness detection device is connected with the air source, and the output end is connected with an airway inlet of the pantograph slide plate; the input end of the tightness detection device is connected with the air source, and the output end is connected with the airway inlet of the pantograph slide plate; the on-off device is installed on the work bench and used for connecting the airway of the pantograph slide plate; and the fluidness detection device and the tightness detection device are provided with a switch for controlling the two to operate at different times. The air tightness detection system for the pantograph slide plate is simple in structure, easy to use, high in automation degree, accurate and reliable in detection results, high in detection efficiency and time saving. The invention also discloses a method for pantograph slide plate air tightness detection by adopting the above detection system.
Description
Technical field
The present invention relates to detection technique field, particularly relate to the bubble-tight system and method for a kind of detection pantograph pan.
Background technology
In the manufacture process of pantograph pan, need to carry out air-leakage test to it, to determine whether it leaks gas, and then determine that whether it is qualified.
Traditional detection method is with seal by clogging for the import and export of product, then is immersed in the water, and observes its whether bubbling in the mode of artificial naked eyes, and according to the number of bubble of emerging, judges whether it is specification product.
Above-mentioned detection method is adopted to there is following shortcoming: 1, to need a large amount of water, so cause the waste of water resource owing to detecting; 2, completely carry out whether qualified judgement by the mode of artificial naked eyes in testing process, need operator's multi-angle to observe, lose time, and easily occur erroneous judgement, phenomenon of failing to judge, thus affect the Quality and yield of product; 3, testing process is overly dependent upon the detection experience of operator, does not have unified criterion, and be affected by human factors too large, therefore testing result is unreliable.
Summary of the invention
Object of the present invention is exactly to solve the problem, and provides a kind of pantograph pan air tightness detection system, and its structure is simple, and easy to use, automaticity is high, and testing result accurately, reliably, detection efficiency is high, saves time, and saves recruitment cost; The present invention also provides a kind of method adopting above-mentioned detection system to carry out pantograph pan air-leakage test.
For realizing above-mentioned purpose of the present invention, pantograph pan air tightness detection system of the present invention comprises: worktable; Be installed on the fixture on worktable, for clamping pantograph pan; Be installed at least one source of the gas below worktable; Its input end is connected to the mobility-detected device of described source of the gas, and its output terminal is for connecting the air flue entrance of pantograph pan; Its input end is connected to the device for detecting sealability of described source of the gas, and its output terminal is for connecting the air flue entrance of pantograph pan; Be arranged on the on-off system of the air flue for connecting described pantograph pan on described worktable; Wherein, described mobility-detected device and device for detecting sealability are provided with control respectively at the switch of different time operation.
Wherein, described mobility-detected device also comprises: the first pipeline that its input end is connected with described source of the gas, and its output terminal is for connecting the air flue entrance of pantograph pan; Be arranged on the first pipeline for detecting first detecting element of described source of the gas to the flow value of insufflation gas in described pantograph pan air flue in real time; Wherein, the first detecting element is connected with control device, by the flow value that the first detecting element detects, control device judges whether the gas fluidity of described pantograph pan air flue meets the requirements.
Wherein, described device for detecting sealability also comprises: the second pipeline that its input end is connected with described source of the gas, and its output terminal is for connecting the air flue entrance of pantograph pan; Be arranged on the second detecting element for detecting gas pressure value in air flue after the described pantograph pan air flue pressurize t time on the second pipeline; Wherein, the second detecting element is connected with control device, by the force value that the second detecting element detects, control device judges whether the sealing of described pantograph pan air flue meets the requirements.
Wherein, the switch of described mobility-detected device and device for detecting sealability is respectively the first gas control transfer valve and the second gas control transfer valve.
Wherein, described on-off system comprises the first blocking-up Pneumatic valve and the second blocking-up Pneumatic valve.
Further, described device for detecting sealability also comprises and being arranged on described second pipeline and the first solenoid valve between gas control transfer valve and described source of the gas and the second solenoid valve, and wherein, the second solenoid valve is in parallel with the first solenoid valve after connecting with reduction valve.
Preferably, described fixture is provided with two stations, for while clamping two pantograph pans; Described mobility-detected device and described device for detecting sealability are also provided with for switching pipeline to carry out the flow Switch of working position valve of mobility-detected and sealing propertytest pantograph pan and airtight Switch of working position valve respectively to two the pantograph pan air flues be arranged on two stations.
The present invention also provides a kind of and adopts detection system as above to detect the bubble-tight method of pantograph pan, and it comprises the steps:
A) pantograph pan is placed in the fixture be positioned on worktable, keep pantograph pan air flue two ends unobstructed, control device controls source of the gas work, is the gas of the first scheduled pressure value a to provide its force value;
B) while source of the gas work, the switch that control device controls in mobility pick-up unit performs breakdown action, the gas flow of source of the gas is made to enter in the air flue of pantograph pan through mobility-detected device, and adopt mobility-detected device to measure the flow value of described gas in real time, and judge whether the gas fluidity of pantograph pan air flue meets the requirements by described flow value;
C) if the gas fluidity of pantograph pan air flue meets the requirements, the switch that control device controls in device for detecting sealability performs breakdown action, the gas flow of source of the gas is made to enter in the air flue of pantograph pan through device for detecting sealability, then control on-off system and perform closed action, adopt device for detecting sealability to detect the force value of gas in air flue, and judge whether the sealing of pantograph pan air flue meets the requirements by described force value.
Wherein, described step C) after, also comprise the steps:
D) if step C) in the sealing of pantograph pan air flue meet the requirements, control device controls on-off system and performs breakdown action, in pantograph pan air flue, be filled with by source of the gas the gas that its force value is the second scheduled pressure value b simultaneously, and detected the force value of gas in air flue by device for detecting sealability, and judge whether the sealing of pantograph pan air flue meets the requirements by described force value.
Wherein, described step B) comprising:
B1) while source of the gas work, the switch that control device controls in mobility pick-up unit performs breakdown action, make the gas flow of source of the gas through the first pipeline of mobility-detected device, enter the air flue of pantograph pan, and the flow value of gas in the first pipeline measured in real time by the flow sensor in mobility-detected device, and send the flow signal corresponding with measuring flow value to control device;
B2) control device processes the flow signal received, and the flow value obtained and setting flow value is compared after process;
B3) if when flow value is more than or equal to setting flow value, show that the gas fluidity of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of gas fluidity by coupled display device; If when flow value is less than setting flow value, then show that the gas fluidity of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of gas fluidity by display device.
Compared with prior art, pantograph pan air tightness detection system of the present invention has following beneficial effect:
1) pantograph pan air tightness detection system of the present invention, structure is simple, easy to use, there is mobility-detected device and device for detecting sealability, automatically can detect the gas fluidity of pantograph pan air flue and sealing integrity, testing result is reliable, and testing result is directly shown by display device, is convenient to observe;
2) pantograph pan air tightness detection system of the present invention, has on-off system, and automatically carry out shutoff to the entrance and exit of pantograph pan air flue, automaticity is high, avoids carrying out wasting time and energy of artificial shutoff, improves detection efficiency;
3) mobility-detected device of the present invention and device for detecting sealability are provided with control respectively at the switch of different time operation, and switch carries out action under control of the control means, avoid in testing process, due to the metrical error that human factor is brought, testing result is more reliable, and save time, improve detection efficiency;
4) in pantograph pan air tightness detection system of the present invention, fixture can clamping two pantograph pans, and mobility-detected device and device for detecting sealability can carry out gas fluidity detection and air flue sealing propertytest to two pantograph pans simultaneously, and testing result is mutually noiseless, thus raising detection efficiency, save detection time.
Below in conjunction with accompanying drawing, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the front view of the pantograph pan air tightness detection system of first embodiment of the invention;
Fig. 2 is the right side view of the air tightness detection system of pantograph pan shown in Fig. 1;
Fig. 3 is the schematic diagram of gas circuit of the pantograph pan air tightness detection system of first embodiment of the invention;
Fig. 4 is the right side view of the pantograph pan air tightness detection system of second embodiment of the invention;
Fig. 5 is the schematic diagram of gas circuit of the pantograph pan air tightness detection system of second embodiment of the invention.
Description of reference numerals: 1-worktable; 2-fixture; 3,3 '-pantograph pan; 4-source of the gas; 5a-first pipeline; 5b-second pipeline; 6-first detecting element; 7-second detecting element; 8-control device; 9-first gas control transfer valve; 10-second gas control transfer valve; 11-reduction valve; 12-first solenoid valve; 13-second solenoid valve; 14-reduction valve; 15-first flow Switch of working position valve; 15 '-the second flow Switch of working position valve; 16-first blocks Pneumatic valve; 17-second blocks Pneumatic valve; The airtight Switch of working position valve of 18-first; 18 '-the second airtight Switch of working position valve; 19-mobility-detected device; 20-device for detecting sealability; 21-on-off system; M-air flue entrance; N-air passage outlet.
Embodiment
As shown in Figure 1, Figure 2, Figure 4 shows, the invention provides a kind of pantograph pan air tightness detection system, it comprises: worktable 1, and it is arranged on support 1a, and is mounted with platform 1b in parallel above it; Be installed on the fixture 2 on worktable 1, for clamping pantograph pan 3; To be installed on below worktable 1 and to be positioned at least one source of the gas 4 of support 1a; The mobility-detected device 19 that its input end is connected with source of the gas 4, its output terminal is for connecting the air flue entrance of pantograph pan 3; The device for detecting sealability 20 that its input end is connected with source of the gas 4, its output terminal is for connecting the air flue entrance of pantograph pan 3; Be arranged on the on-off system of the air flue for connecting pantograph pan 3 on worktable 1, for being closed by the entrance and exit of described air flue or opening; Wherein, mobility-detected device and device for detecting sealability are provided with control respectively at the switch of different time operation.In addition, pantograph pan air tightness detection system also comprises the control device 8 be connected with source of the gas 4, mobility-detected device 19, device for detecting sealability 20, on-off system 21 respectively, it controls related elements according to actual conditions and performs respective action, and it is connected with display device 16.
The present invention controls source of the gas 4 to insufflation gas in the air flue of pantograph pan 3 by control system; Then control the operating switch of mobility pick-up unit 19, make mobility-detected device 19 enter duty, so that whether the mobility detected when gas flows in pantograph pan 3 air flue meets the requirements; Control on-off system again the entrance and exit of described air flue is closed; Finally control the operating switch of device for detecting sealability 20, make device for detecting sealability 20 enter duty, to detect the sealing of pantograph pan 3 air flue by device for detecting sealability 20.
Wherein, fixture 2 can be arranged a station for clamping pantograph pan 3, multiple station for clamping pantograph pan 3 also can be set, be described below in conjunction with specific embodiment.
Embodiment 1
As shown in Figure 1 and Figure 2, in the pantograph pan air tightness detection system of the present embodiment, fixture is provided with a station for clamping pantograph pan 3.
Concrete, the fixture 2 of the present embodiment is arranged on the upper surface of worktable 1, comprise the tool being arranged on worktable 1 both sides two back-up blocks at regular intervals, groove is respectively equipped with at each back-up block upper surface, and the shape of the shape of groove and physical dimension and pantograph pan 3 and physical dimension match, the groove of two back-up blocks is configured for a station of clamping pantograph pan 3 jointly.When clamping pantograph pan 3, the two ends of pantograph pan 3 are placed in respectively in the groove of two back-up blocks.
Wherein, in the pantograph pan air tightness detection system of the present embodiment, detected by the mobility of gas in mobility-detected device 19 pairs of pantograph pan 3 air flues.Further, in testing process, the input end of mobility-detected device is connected with source of the gas 4, and its output terminal is connected with the air flue entrance M of pantograph pan 3, thus is filled with in the air flue of pantograph pan by the gas of source of the gas 4.Wherein, the source of the gas 4 of the present embodiment is gas compressor.Preferably, gas compressor provides its force value to be the gas of 1MPa, and certainly, according to the needs in using, gas compressor also can provide the gas of other force value.
Concrete, as shown in Figure 1, Figure 2, Figure 3 shows, the mobility-detected device 19 of the present embodiment comprises: the first pipeline 5a that its input end is connected with source of the gas 4, and its output terminal is for connecting the air flue entrance of pantograph pan 3; Be arranged on the first pipeline 5a for detecting first detecting element 6 of source of the gas 4 to the flow value of insufflation gas in pantograph pan 3 air flue in real time; Wherein, the first detecting element 6 is connected with control device 8 (not shown), by the flow value that the first detecting element 6 detects, control device 8 judges whether the gas fluidity of pantograph pan air flue meets the requirements.Wherein, the first detecting element 6 adopted in the present embodiment is flow sensor.In addition, mobility-detected device 19 also comprises the switch for controlling its whether executable operations, and it is the first gas control transfer valve 9.
When control device 8 sends the instruction making source of the gas 4 work, it can send the instruction of opening to the first gas control transfer valve 9 of mobility-detected device 19 simultaneously, thus make the gas of source of the gas 4 enter the first pipeline 5a, and make other element of mobility-detected device 19 enter duty: enter the gas of the first pipeline 5a first through reduction valve 11, the gas that source of the gas 4 is carried by reduction valve 11 carries out reduced pressure treatment and meets the requirements to make the force value of gas, and enter in air flue through the gas of reduced pressure treatment from the air flue entrance M of pantograph pan, and flow out from air passage outlet N, and the flow sensor 6 be arranged on the first pipeline 5a detects the flow value of gas in real time, and send the flow signal corresponding with measuring flow value to control device 8, control device 8 processes the flow signal received, and the flow value obtained after process and setting flow value are compared: if flow value is more than or equal to setting flow value, then show that the gas fluidity of pantograph pan 3 air flue meets the requirements, control device 8 demonstrates the satisfactory testing result of gas fluidity by display device 16, if flow value is less than setting flow value, then show that the gas fluidity of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of gas fluidity by display device.
After employing mobility-detected device has detected the gas fluidity in pantograph pan 3 air flue, the sealing of device for detecting sealability 20 pairs of pantograph pan 3 air flues has been adopted to detect.Further, in testing process, the input end of device for detecting sealability 20 is connected with source of the gas 4, and its output terminal is connected with the air flue entrance of pantograph pan 3, thus the gas of source of the gas 4 is entered in the air flue of pantograph pan.
Concrete, as shown in Figure 1, Figure 2, Figure 3 shows, device for detecting sealability 20 comprises: the second pipeline 5b that its input end is connected with source of the gas 4, and its output terminal is for connecting the air flue entrance M of pantograph pan 3; Be arranged on the second detecting element 7 for detecting gas pressure value in air flue after the pantograph pan 3 air flue pressurize t time on the second pipeline 5b; Wherein, the second detecting element 7 is connected with control device 8, by the force value that the second detecting element 7 detects, control device 8 judges whether the sealing of pantograph pan air flue meets the requirements.Wherein, the second detecting element 7 adopted in the present embodiment is pressure transducer.
In addition, device for detecting sealability 20 also comprises the switch for controlling its whether executable operations, it is the second gas control transfer valve 10, and, device for detecting sealability 20 also comprises and being arranged on the second pipeline 5b and the first solenoid valve 12 and the second solenoid valve 13 between the second gas control transfer valve 10 and source of the gas 4, wherein, the second solenoid valve 13 is in parallel with the first solenoid valve 12 after connecting with reduction valve 14.
After control device 8 sends to the second gas control transfer valve 10 instruction making it open, the gas of source of the gas 4 can enter the second pipeline 5b, and makes other element of device for detecting sealability 20 enter duty.When required gas pressure value is less, control device 8 controls that the second solenoid valve 13 is in opening, the first solenoid valve 12 is in closed condition, thus the gas of source of the gas 4 is entered be mounted with a branch line (as shown in Figure 3) of the second pipeline 5b of the second solenoid valve 13, namely first by reduction valve 14, and gas is carried out reduced pressure treatment by reduction valve 14, the gas after reduced pressure treatment flows through the second pipeline 5b again and enters in air flue from the air flue entrance M of pantograph pan; And when required gas pressure value is larger, control device 8 controls that the first solenoid valve 12 is in opening, the second solenoid valve 13 is in closed condition, thus the gas of source of the gas 4 is entered be mounted with another branch line of the second pipeline 5b of the first solenoid valve 12, then flow through the second pipeline 5b, enter in air flue from the air flue entrance M of pantograph pan.
Because the sealing of device for detecting sealability 20 pairs of pantograph pan 3 air flues detects, therefore the detection system of the present embodiment is also provided with the on-off system 21 for pantograph pan 3 air flue entrance M and air passage outlet N is closed or opened.As shown in Figure 3, on-off system 21 comprises the first blocking-up Pneumatic valve 16 and second and blocks Pneumatic valve 17, wherein, first blocks Pneumatic valve 16 is arranged between the second pipeline 5b and pantograph pan 3 air flue entrance M, and second blocks Pneumatic valve 17 is arranged on pantograph pan 3 air passage outlet N place.
When the sealing of device for detecting sealability 20 pairs of pantograph pan 3 air flues detects, control device 8 controls the first blocking-up Pneumatic valve 16 and the air flue entrance M of pantograph pan 3 and air passage outlet N closes by the second blocking-up Pneumatic valve 17, thus is sealed up for safekeeping by gas in air flue so that pressurize.
When gas to be sealed up for safekeeping in pantograph pan 3 air flue after time t, the force value of gas in air flue measured by pressure transducer, and by the pressure signal transmission corresponding with the force value measured to control device, control device processes the pressure signal received, and the relative error of the force value obtained after computing and setup pressure value, and relative error and predictive error are compared, if relative error is less than or equal to predictive error, then show that the sealing of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of air flue sealing by display device, if relative error is greater than predictive error, then show that the sealing of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of air flue sealing by display device.
Owing to carrying out the detection of gas fluidity and air flue sealing integrity in the present embodiment successively to a pantograph pan 3 to be measured, therefore, the first gas control transfer valve 9 and the second gas control transfer valve 10 carry out open operation at different time under the control of control device 8.When the first gas control transfer valve 9 is in opening, the second gas control transfer valve 10 is in closed condition, thus makes the gas of source of the gas enter the first pipeline 5a; On the contrary, when the first gas control transfer valve 9 is in closed condition, the second gas control transfer valve 10 is in opening, thus makes the gas of source of the gas enter the second pipeline 5b.
And, when adopting the gas in mobility-detected device 19 pairs of pantograph pan 3 air flues to carry out mobility-detected, control device 8 control first blocks Pneumatic valve 16 and the air flue entrance M of pantograph pan 3 and air passage outlet N opens by the second blocking-up Pneumatic valve 17, thus gas can be entered from air flue entrance M, after flowing through air flue, flow out from air passage outlet N.
In addition, the present invention also provides a kind of method adopting above-mentioned detection system to carry out pantograph pan air-leakage test, and it comprises the steps:
A) step of pantograph pan and source of the gas work is settled:
Pantograph pan 3 is placed in the groove of the fixture be positioned on worktable, keeps pantograph pan air flue two ends unobstructed; Control device 8 controls source of the gas 4 and works, and is the gas of the first scheduled pressure value a to provide its force value;
B) mobility-detected device detects the step of gas fluidity in pantograph pan air flue:
B1) while source of the gas 4 works, the first gas control transfer valve 9 that control device 8 controls in mobility pick-up unit 19 performs breakdown action, make the gas flow of source of the gas 4 through the first pipeline 5a of mobility-detected device, enter from the air flue entrance M of pantograph pan, and flow out from air passage outlet N, and the flow value of gas in the first pipeline 5a measured in real time by the flow sensor 6 in mobility-detected device, and the flow signal corresponding with measuring flow value is sent to control device 8;
B2) control device 8 processes the flow signal received, and the flow value obtained after process and setting flow value are compared, preferably, setting flow value is 20L/min;
B3) if when flow value is more than or equal to setting flow value, show that the gas fluidity of pantograph pan air flue meets the requirements, control device 8 demonstrates the satisfactory testing result of gas fluidity by coupled display device 16; If when flow value is less than setting flow value, then show that the gas fluidity of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of gas fluidity by display device.
C) if the gas fluidity of pantograph pan air flue meets the requirements, the step that the sealing integrity adopting device for detecting sealability to carry out first time pantograph pan air flue detects:
C1) after step B completes, if the gas fluidity of pantograph pan air flue meets the requirements, the second gas control transfer valve 10 that control device controls in device for detecting sealability 20 performs breakdown action, control the first gas control transfer valve 9 and perform closing motion, and control the second solenoid valve 13 and be in opening, first solenoid valve 12 is in closed condition, thus make the gas of source of the gas 4 first enter a branch line of the second pipeline 5b in device for detecting sealability, after the reduced pressure treatment of reduction valve 14, the gas that its force value equals the first scheduled pressure value a flows in the air flue of pantograph pan 3,
C2) after the gas equaling the first scheduled pressure value a when its force value is full of the air flue of pantograph pan 3, control device controls first in on-off system 21 and blocks Pneumatic valve 16 and the closed action of the second blocking-up Pneumatic valve 17 execution, respectively the air flue entrance M of pantograph pan and air passage outlet N is closed, thus make the gas in air flue be in packing state;
C3), after the gas pressurize certain hour t in air flue, the force value of gas in air flue measured by the pressure transducer in device for detecting sealability 20, and by the pressure signal transmission corresponding with the force value measured to control device 8;
C4) control device processes the pressure signal received, and the relative error of the force value obtained after computing and setup pressure value, and relative error and predictive error are compared;
C5) if relative error is less than or equal to predictive error, then show that the sealing of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of air flue sealing by display device; If relative error is greater than predictive error, then show that the sealing of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of air flue sealing by display device.
Wherein, in step C3) in, the force value adopting pressure transducer 7 to measure gas in described air flue can adopt following method:
C31) after the gas pressurize certain hour t in air flue, the first blocking-up Pneumatic valve 16 that control device controls in on-off system 21 performs breakdown action, control the second gas control transfer valve 10 simultaneously and perform closing motion, thus make the gas in source of the gas 4 no longer enter the second pipeline 5b;
C32) pressure transducer in device for detecting sealability 20 is adopted to measure the average pressure value of the gas between the second gas control transfer valve 10 and the air passage outlet N of pantograph pan 3, and converse the force value of gas in pantograph pan 3 air flue according to average pressure value, and by the pressure signal transmission corresponding with the force value that this converses to control device 8.
In addition, the force value adopting pressure transducer 7 to measure gas in described air flue also can adopt method of the prior art, no longer describes at this.
D) device for detecting sealability second time is adopted to detect the step of pantograph pan air flue sealing integrity:
D1) if step C) testing process in, the sealing of pantograph pan air flue meets the requirements, the second blocking-up Pneumatic valve 17 that control device controls in on-off system 21 performs breakdown action, it is made to be opened by air passage outlet N of pantograph pan, simultaneously, control device 8 controls the first solenoid valve 12 and is in opening, controls the second solenoid valve 13 and be in closed condition, thus the gas making its force value of source of the gas 4 equal the second scheduled pressure value b enters another branch line of the second pipeline 5b in device for detecting sealability, and flow through the air flue of pantograph pan 3;
D2) after being full of its force value in pantograph pan air flue and being the gas of the second scheduled pressure value b, control device controls first in on-off system and blocks Pneumatic valve 16 and the closed action of the second blocking-up Pneumatic valve 17 execution, respectively the air flue entrance M of pantograph pan and air passage outlet N is closed, thus make the gas in air flue be in packing state;
D3), after the gas pressurize certain hour t in air flue, the force value of gas in air flue measured by the pressure transducer in device for detecting sealability 20, and by the pressure signal transmission corresponding with the force value measured to control device 8;
D4) control device processes the pressure signal received, and the relative error of the force value obtained after computing and setup pressure value, and relative error and predictive error are compared;
D5) if relative error is less than or equal to predictive error, then show that the sealing of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of air flue sealing by display device; If relative error is greater than predictive error, then show that the sealing of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of air flue sealing by display device.
Wherein, adopt pressure transducer 7 measure the force value of gas in described air flue and above-mentioned steps C3) in measuring method identical, no longer repeat at this.
Wherein, the first scheduled pressure value a in the present embodiment and the second scheduled pressure value b determines according to actual conditions, and preferably, the first scheduled pressure value a and the second scheduled pressure value b is respectively 0.5MPa and 1MPa, and dwell time t is 10min.
So far, the air-leakage test process of a pantograph pan is terminated.
Embodiment 2
As shown in Figure 4, Figure 5, in the pantograph pan air tightness detection system of the present embodiment, fixture is provided with two stations for clamping pantograph pan 3.
Concrete, the fixture 2 of the present embodiment comprises the tool being arranged on worktable 1 both sides two back-up blocks at regular intervals, two grooves are respectively equipped with at each back-up block upper surface, and the shape of the shape of each groove and physical dimension and pantograph pan and physical dimension match, in correspondence with each other, four grooves are configured for two stations of clamping two pantograph pans 3,3 ' to four groove location on two back-up blocks jointly.When each pantograph pan of clamping, the two ends of pantograph pan are placed in respectively in the respective slot of two back-up blocks.
Wherein, in the pantograph pan air tightness detection system of the present embodiment, the structure of mobility-detected device and device for detecting sealability, except comprising each element in embodiment 1, also comprises for switching pipeline to carry out the flow Switch of working position valve of mobility-detected and sealing propertytest and airtight Switch of working position valve respectively to two the pantograph pan air flues be arranged on two stations.
Concrete, as shown in Figure 5, the second flow Switch of working position valve 15 ' is provided with between the air flue entrance being provided with the pantograph pan 3 ' on second station in first flow Switch of working position valve 15, first pipeline 5a and two station between the air flue entrance of the pantograph pan 3 on first station in first pipeline 5a and two station of mobility-detected device 19; And be provided with the second containment station transfer valve 18 ' between the air flue entrance being provided with the pantograph pan 3 ' on second station in first containment station transfer valve 18, the second pipeline 5b and two station between the air flue entrance of pantograph pan 3 on first station in second pipeline 5b and two station of device for detecting sealability 20.
When detecting the mobility of gas in pantograph pan 3 air flue on first station when mobility-detected device 19, control device 8 controls that first flow Switch of working position valve 15 is in opening, the second flow Switch of working position valve 15 ' is in closed condition, thus makes the gas of source of the gas 4 by flowing in the air flue of pantograph pan 3 after first flow Switch of working position valve 15; When the mobility of gas in the pantograph pan 3 ' air flue on detection second station, control device 8 controls that the second flow Switch of working position valve 15 ' is in opening, first flow Switch of working position valve 15 is in closed condition, thus the gas of source of the gas 4 is flowed in the air flue of pantograph pan 3 ' afterwards by the second flow Switch of working position valve 15 '.
Equally, when device for detecting sealability 20 detects the sealing of pantograph pan 3 air flue on first station, control device 8 controls that the first containment station transfer valve 18 is in opening, the second containment station transfer valve 18 ' is in closed condition, thus makes the gas of source of the gas 4 by flowing in the air flue of pantograph pan 3 after the first containment station transfer valve 18; When the sealing of the pantograph pan 3 ' air flue on detection second station, control device 8 controls that the second containment station transfer valve 18 ' is in opening, the first containment station transfer valve 18 is in closed condition, thus the gas of source of the gas 4 is flowed in the air flue of pantograph pan 3 ' afterwards by the second containment station transfer valve 18 '.
In the pantograph pan air tightness detection system of the present embodiment, owing to being provided with the station for clamping two pantograph pans on fixture, therefore can detect the impermeability of two pantograph pans simultaneously, thus save detection time, improve detection efficiency.
The present embodiment also provides a kind of method adopting above-mentioned detection system to carry out pantograph pan air-leakage test, and it comprises the steps:
A) step of pantograph pan and source of the gas work is settled:
Be placed in respectively by two pantograph pans 3,3 ' on two stations of fixture, keep two pantograph pan air flue two ends unobstructed, then control device 8 controls source of the gas 4 and works, and is the gas of the first scheduled pressure value a to provide its force value;
B) mobility-detected device detects the step of gas fluidity in pantograph pan air flue:
B1) while source of the gas 4 works, the first gas control transfer valve 9 that control device 8 controls in mobility pick-up unit 19 performs breakdown action, second gas control transfer valve 10 performs closing motion, control first flow Switch of working position valve 15 simultaneously and be in opening, second flow Switch of working position valve 15 ' is in closed condition, make the gas flow of source of the gas 4 through the first pipeline 5a of mobility-detected device, enter from the air flue entrance M of the pantograph pan 3 be arranged on first station, and flow out from air passage outlet N, and the flow value of gas in pantograph pan 3 air flue flowing on first station that flow sensor 6 in mobility-detected device is measured in the first pipeline 5a in real time, and send the flow signal corresponding with measuring flow value to control device 8,
B2) control device 8 processes the flow signal received, and the flow value obtained and setting flow value is compared after process;
B3) if when flow value is more than or equal to setting flow value, show that the gas fluidity of pantograph pan air flue meets the requirements, control device 8 demonstrates the satisfactory testing result of gas fluidity by coupled display device 16; If when flow value is less than setting flow value, then show that the gas fluidity of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of gas fluidity by display device.
C) if the gas fluidity of pantograph pan air flue meets the requirements, the step that the sealing integrity adopting device for detecting sealability to carry out first time pantograph pan air flue detects:
C1) after step B completes, if the gas fluidity of pantograph pan air flue meets the requirements, the second gas control transfer valve 10 that control device controls in device for detecting sealability 20 performs breakdown action, control the first gas control transfer valve 9 and perform closing motion, control the second solenoid valve 13 and be in opening, first solenoid valve 12 is in closed condition, control the first containment station transfer valve 18 and be in opening, second containment station transfer valve 18 ' is in closed condition, thus make the gas of source of the gas 4 first enter a branch line of the second pipeline 5b in device for detecting sealability, after the reduced pressure treatment of reduction valve 14, the gas that its force value equals the first scheduled pressure value a flows in the air flue of pantograph pan 3 by the first containment station transfer valve 18,
C2) after the gas equaling the first scheduled pressure value a when its force value is full of the air flue of pantograph pan 3, control device controls first in on-off system 21 and blocks Pneumatic valve 16 and the closed action of the second blocking-up Pneumatic valve 17 execution, respectively the air flue entrance M of pantograph pan and air passage outlet N is closed, thus make the gas in air flue be in packing state;
C3), after the gas pressurize certain hour t in air flue, the force value of gas in air flue measured by the pressure transducer in device for detecting sealability 20, and by the pressure signal transmission corresponding with the force value measured to control device 8;
C4) control device processes the pressure signal received, and the relative error of the force value obtained after computing and setup pressure value, and relative error and predictive error are compared;
C5) if relative error is less than or equal to predictive error, then show that the sealing of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of air flue sealing by display device; If relative error is greater than predictive error, then show that the sealing of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of air flue sealing by display device.
Wherein, in step C3) in, the force value adopting pressure transducer 7 to measure gas in described air flue can adopt following method:
C31) after the gas pressurize certain hour t in air flue, the first blocking-up Pneumatic valve 16 that control device controls in on-off system 21 performs breakdown action, control the second gas control transfer valve 10 simultaneously and perform closing motion, thus make the gas in source of the gas 4 no longer enter the second pipeline 5b;
C32) pressure transducer in device for detecting sealability 20 is adopted to measure the average pressure value of the gas between the second gas control transfer valve 10 and the air passage outlet N of pantograph pan 3, and converse the force value of gas in pantograph pan 3 air flue according to average pressure value, and by the pressure signal transmission corresponding with the force value that this converses to control device 8.
In addition, the force value adopting pressure transducer 7 to measure gas in described air flue also can adopt method of the prior art, no longer describes at this.
D) device for detecting sealability second time is adopted to detect the step of pantograph pan air flue sealing integrity:
D1) if step C) testing process in, the sealing of pantograph pan air flue meets the requirements, the second blocking-up Pneumatic valve 17 that control device controls in on-off system 21 performs breakdown action, it is made to be opened by air passage outlet N of pantograph pan, simultaneously, control device 8 controls the first solenoid valve 12 and is in opening, controls the second solenoid valve 13 and be in closed condition, thus the gas making its force value of source of the gas 4 equal the second scheduled pressure value b enters another branch line of the second pipeline 5b in device for detecting sealability, and flow through the air flue of pantograph pan 3;
D2) after being full of its force value in pantograph pan air flue and being the gas of the second scheduled pressure value b, control device controls first in on-off system and blocks Pneumatic valve 16 and the closed action of the second blocking-up Pneumatic valve 17 execution, respectively the air flue entrance M of pantograph pan and air passage outlet N is closed, thus make the gas in air flue be in packing state;
D3), after the gas pressurize certain hour t in air flue, the force value of gas in air flue measured by the pressure transducer in device for detecting sealability 20, and by the pressure signal transmission corresponding with the force value measured to control device 8;
D4) control device processes the pressure signal received, and the relative error of the force value obtained after computing and setup pressure value, and relative error and predictive error are compared;
D5) if relative error is less than or equal to predictive error, then show that the sealing of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of air flue sealing by display device; If relative error is greater than predictive error, then show that the sealing of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of air flue sealing by display device.
After pantograph pan 3 air-leakage test be arranged on first station completes, pantograph pan 3 on first station takes off by operator, simultaneously, operator carries out the switching of flow Switch of working position valve and containment station transfer valve by control device, the pantograph pan 3 ' be arranged on second station is entered after making the gas of source of the gas flow through the pipeline at the second flow Switch of working position valve 15 ' and the second containment station transfer valve 18 ' place successively respectively, and successively air-leakage test is carried out to the pantograph pan 3 ' on second station, the principle detected is identical with the above-mentioned air-leakage test principle to the pantograph pan 3 on first station, no longer repeat at this.
Although be explained in detail the present invention above; but the present invention is not limited thereto; those skilled in the art can principle according to the present invention modify, and therefore, all various amendments carried out according to principle of the present invention all should be understood to fall into protection scope of the present invention.
Claims (10)
1. a pantograph pan air tightness detection system, is characterized in that, comprising:
Worktable (1);
Be installed on the fixture (2) on worktable (1), for clamping pantograph pan (3);
Be installed at least one source of the gas (4) of worktable (1) below;
Its input end is connected to the mobility-detected device (19) of described source of the gas (4), and its output terminal is for connecting the air flue entrance of pantograph pan (3);
Its input end is connected to the device for detecting sealability (20) of described source of the gas (4), and its output terminal is for connecting the air flue entrance of pantograph pan (3);
Be arranged on the on-off system of the air flue for connecting described pantograph pan (3) on described worktable (1);
Wherein, described mobility-detected device and device for detecting sealability are provided with control respectively at the switch of different time operation.
2. detection system according to claim 1, is characterized in that, described mobility-detected device also comprises:
The first pipeline (5a) that its input end is connected with described source of the gas (4), its output terminal is for connecting the air flue entrance of pantograph pan (3);
Be arranged on the first pipeline (5a) for detecting first detecting element (6) of described source of the gas (4) to the flow value of insufflation gas in described pantograph pan (3) air flue in real time;
Wherein, the first detecting element (6) is connected with control device (8), by the flow value that the first detecting element (6) detects, control device (8) judges whether the gas fluidity of described pantograph pan air flue meets the requirements.
3. detection system according to claim 1, is characterized in that, described device for detecting sealability also comprises:
The second pipeline (5b) that its input end is connected with described source of the gas (4), its output terminal is for connecting the air flue entrance of pantograph pan (3);
Be arranged on the second detecting element (7) for detecting gas pressure value in air flue after described pantograph pan (3) the air flue pressurize t time on the second pipeline (5b);
Wherein, the second detecting element (7) is connected with control device (8), by the force value that the second detecting element (7) detects, control device (8) judges whether the sealing of described pantograph pan air flue meets the requirements.
4. detection system according to claim 1, is characterized in that, the switch of described mobility-detected device and device for detecting sealability is respectively the first gas control transfer valve (9) and the second gas control transfer valve (10).
5. detection system according to claim 1, is characterized in that, described on-off system comprises the first blocking-up Pneumatic valve (16) and second and blocks Pneumatic valve (17).
6. detection system according to claim 4, it is characterized in that, described device for detecting sealability also comprises and is arranged on described second pipeline (5b) upper and the first solenoid valve (12) between gas control transfer valve and described source of the gas and the second solenoid valve (13), wherein, the second solenoid valve (13) is in parallel with the first solenoid valve (12) after connecting with reduction valve (14).
7. the detection system according to any one of claim 1-6, is characterized in that:
Described fixture (2) is provided with two stations, for while clamping two pantograph pans (3,3 ');
Described mobility-detected device and described device for detecting sealability are also provided with for switching pipeline to carry out the flow Switch of working position valve of mobility-detected and sealing propertytest pantograph pan and airtight Switch of working position valve respectively to two the pantograph pan air flues be arranged on two stations.
8. adopt the detection system as described in any one of claim 1-7 to detect the bubble-tight method of pantograph pan, it is characterized in that, comprise the steps:
A) pantograph pan is placed in the fixture be positioned on worktable, keep pantograph pan air flue two ends unobstructed, control device controls source of the gas work, is the gas of the first scheduled pressure value a to provide its force value;
B) while source of the gas work, the switch that control device controls in mobility pick-up unit performs breakdown action, the gas flow of source of the gas is made to enter in the air flue of pantograph pan through mobility-detected device, and adopt mobility-detected device to measure the flow value of described gas in real time, and judge whether the gas fluidity of pantograph pan air flue meets the requirements by described flow value;
C) if the gas fluidity of pantograph pan air flue meets the requirements, the switch that control device controls in device for detecting sealability performs breakdown action, the gas flow of source of the gas is made to enter in the air flue of pantograph pan through device for detecting sealability, then control on-off system and perform closed action, adopt device for detecting sealability to detect the force value of gas in air flue, and judge whether the sealing of pantograph pan air flue meets the requirements by described force value.
9. pantograph pan air-tightness detection method according to claim 8, is characterized in that, described step C) after, also comprise the steps:
D) if step C) in the sealing of pantograph pan air flue meet the requirements, control device controls on-off system and performs breakdown action, in pantograph pan air flue, be filled with by source of the gas the gas that its force value is the second scheduled pressure value b simultaneously, and detected the force value of gas in air flue by device for detecting sealability, and judge whether the sealing of pantograph pan air flue meets the requirements by described force value.
10. pantograph pan air-tightness detection method according to claim 8, is characterized in that, described step B) comprising:
B1) while source of the gas work, the switch that control device controls in mobility pick-up unit performs breakdown action, make the gas flow of source of the gas through the first pipeline of mobility-detected device, enter the air flue of pantograph pan, and the flow value of gas in the first pipeline measured in real time by the flow sensor in mobility-detected device, and send the flow signal corresponding with measuring flow value to control device;
B2) control device processes the flow signal received, and the flow value obtained and setting flow value is compared after process;
B3) if when flow value is more than or equal to setting flow value, show that the gas fluidity of pantograph pan air flue meets the requirements, control device demonstrates the satisfactory testing result of gas fluidity by coupled display device; If when flow value is less than setting flow value, then show that the gas fluidity of pantograph pan air flue is undesirable, control device demonstrates the undesirable testing result of gas fluidity by display device.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036903A (en) * | 2017-12-20 | 2018-05-15 | 大同新成新材料股份有限公司 | A kind of carbon slipper air-tightness detection device and its application method |
| CN108871681A (en) * | 2018-09-03 | 2018-11-23 | 大同新成新材料股份有限公司 | A kind of pantograph pan airtightness test table |
| CN109612651A (en) * | 2018-11-12 | 2019-04-12 | 大同新成新材料股份有限公司 | A kind of pantograph pan air-tightness detection device and detection method |
| CN110207908A (en) * | 2019-07-16 | 2019-09-06 | 王雅鸿 | A kind of anhydrous detection device of pantograph carbon slide air tightness test |
| JP6990806B1 (en) | 2020-08-20 | 2022-01-12 | 杭州加▲みょう▼科技有限公司 | Welded tee pipe airtightness inspection device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000350305A (en) * | 1999-05-31 | 2000-12-15 | Toshiba Corp | Abrasion measuring system for pantograph sliding plate |
| JP2006118900A (en) * | 2004-10-20 | 2006-05-11 | Hitachi Industries Co Ltd | Inspection device for pantograph contact strip |
| CN201285340Y (en) * | 2008-10-21 | 2009-08-05 | 深圳市宝德自动化精密设备有限公司 | Air tightness detection device |
| CN101788372A (en) * | 2010-01-20 | 2010-07-28 | 台州环天机械有限公司 | Gas tightness detection device |
| CN202119602U (en) * | 2011-06-22 | 2012-01-18 | 芜湖恒耀汽车零部件有限公司 | Air tightness detection machine for automobile exhaust pipe |
| CN202693234U (en) * | 2012-05-30 | 2013-01-23 | 玉环固盛自动化设备有限公司 | Leak detector of infusion tube |
| CN103048614A (en) * | 2012-12-11 | 2013-04-17 | 上海市电力公司 | Portable type gas relay scene calibrator |
| CN203587302U (en) * | 2013-11-18 | 2014-05-07 | 苏州东南电碳科技有限公司 | Air tightness detection system for pantograph slide plate |
-
2013
- 2013-11-18 CN CN201310578472.0A patent/CN104655372B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000350305A (en) * | 1999-05-31 | 2000-12-15 | Toshiba Corp | Abrasion measuring system for pantograph sliding plate |
| JP2006118900A (en) * | 2004-10-20 | 2006-05-11 | Hitachi Industries Co Ltd | Inspection device for pantograph contact strip |
| CN201285340Y (en) * | 2008-10-21 | 2009-08-05 | 深圳市宝德自动化精密设备有限公司 | Air tightness detection device |
| CN101788372A (en) * | 2010-01-20 | 2010-07-28 | 台州环天机械有限公司 | Gas tightness detection device |
| CN202119602U (en) * | 2011-06-22 | 2012-01-18 | 芜湖恒耀汽车零部件有限公司 | Air tightness detection machine for automobile exhaust pipe |
| CN202693234U (en) * | 2012-05-30 | 2013-01-23 | 玉环固盛自动化设备有限公司 | Leak detector of infusion tube |
| CN103048614A (en) * | 2012-12-11 | 2013-04-17 | 上海市电力公司 | Portable type gas relay scene calibrator |
| CN203587302U (en) * | 2013-11-18 | 2014-05-07 | 苏州东南电碳科技有限公司 | Air tightness detection system for pantograph slide plate |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国铁道部: "电力机车受电弓滑板第3部分：碳滑板", 《中华人民共和国铁道行业标准TB／T 1842.3-2008》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036903A (en) * | 2017-12-20 | 2018-05-15 | 大同新成新材料股份有限公司 | A kind of carbon slipper air-tightness detection device and its application method |
| CN108036903B (en) * | 2017-12-20 | 2020-06-05 | 大同新成新材料股份有限公司 | Carbon sliding plate air tightness detection device and use method thereof |
| CN108871681A (en) * | 2018-09-03 | 2018-11-23 | 大同新成新材料股份有限公司 | A kind of pantograph pan airtightness test table |
| CN109612651A (en) * | 2018-11-12 | 2019-04-12 | 大同新成新材料股份有限公司 | A kind of pantograph pan air-tightness detection device and detection method |
| CN110207908A (en) * | 2019-07-16 | 2019-09-06 | 王雅鸿 | A kind of anhydrous detection device of pantograph carbon slide air tightness test |
| CN110207908B (en) * | 2019-07-16 | 2021-08-31 | 青岛绿谷知识产权有限公司 | Anhydrous detection equipment for testing air tightness of pantograph carbon slide plate |
| JP6990806B1 (en) | 2020-08-20 | 2022-01-12 | 杭州加▲みょう▼科技有限公司 | Welded tee pipe airtightness inspection device |
| JP2022035910A (en) * | 2020-08-20 | 2022-03-04 | 杭州加▲みょう▼科技有限公司 | Airtightness inspection device of welded tee pipe |
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