CN108398620B - Surface flashover experiment sample replacing device, experiment device and sample replacing method - Google Patents
Surface flashover experiment sample replacing device, experiment device and sample replacing method Download PDFInfo
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- CN108398620B CN108398620B CN201810146481.5A CN201810146481A CN108398620B CN 108398620 B CN108398620 B CN 108398620B CN 201810146481 A CN201810146481 A CN 201810146481A CN 108398620 B CN108398620 B CN 108398620B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
Abstract
The invention relates to a surface flashover experiment sample replacing device, an experiment device and a sample replacing method, and aims to solve the problems of long time consumption and complex operation of the conventional insulating material surface flashover experiment sample replacement and reduce environmental pollution caused by gas leakage in the sample replacing process. Wherein, the device is changed to creeping over experiment sample along surface includes controller, sample change and electrode compaction structure, and the sample is changed and electrode compaction structure is by displacement step motor and rotatory step motor drive, has realized compressing tightly of sample saddle and electrode, and the change of sample. The invention is based on the automatic control technology, realizes the automatic replacement of the experimental sample in the vacuum or high-pressure insulating environment, does not open the experimental cavity, saves time, improves the experimental efficiency, reduces the pollution caused by the leakage of the insulating gas, and has the advantages of simple structure, convenient operation, cost saving, good repeatability and the like.
Description
Technical Field
The invention belongs to the technical field of electric insulating material detection, and particularly relates to a surface flashover experiment sample replacing device, an experiment device and a sample replacing method.
Background
In power equipment, an insulating structure is used for connecting conductors with different electric potentials and is one of important parts for ensuring normal operation of a device and equipment, the surface flashover voltage of an interface of an insulating part and an insulating medium is generally lower than the bulk breakdown voltage of the insulating medium under the same electrode structure, the surface flashover is easy to occur, the flashover also can aggravate electric field distortion, so that the insulating material is seriously damaged, and the common fault mode in high-voltage equipment is provided.
To ensure the reliability of the insulating properties of the insulating parts, extensive experimental studies on their flashover along the surface are often required before application. When the flashover voltage of the insulating material in different insulating environments is developed, an insulating material sample is generally placed inside an experiment cavity, and the flashover experiment is developed after the insulating environment in the cavity is adjusted. Due to the randomness of the development of the discharge channel and the difference of the microscopic state of the surface of the material, and the surface flashover voltage of the insulating structure under the same condition shows certain dispersity on data, a large number of experimental samples are needed to carry out experiments to ensure the reliability of experimental results when the surface flashover of the material is researched.
In the insulation material surface flashover experiment, a method for placing an insulation material sample in a closed experiment cavity is generally used, and in the research process, the experiment conditions such as electrode gap, gas pressure, gas components and the like are often required to be changed, so that the insulation material sample in the experiment cavity is frequently changed, the gas components, the pressure and the like are changed for many times, so that researchers need to open the experiment cavity for many times, change the sample, vacuumize, fill in insulation gas with specific air pressure, experiment, recover gas and the like, the whole process is complicated, the consumed time is dozens of times or more than hundreds of times of the time required in the experiment development stage, particularly for high-vacuum and high-air-pressure insulation environments, the consumed time is more, and the efficiency of the surface flashover experiment is seriously influenced. In addition, during the sample replacement process, the leakage of the insulating gas may be caused if the sample is not properly operated, and the environmental pollution is caused.
Disclosure of Invention
The invention aims to provide a surface flashover experiment sample replacing device, an experiment device and a sample replacing method, which are used for realizing the rapid and automatic replacement of an experiment sample in a vacuum or high-pressure insulating environment based on an automatic control technology so as to solve the problems of long time consumption, complex operation and possible environmental pollution caused by gas leakage in the surface flashover experiment of an insulating material.
The solution of the invention is:
along face flashover experimental sample changes device, its characterized in that: the device comprises a sample replacing and electrode pressing structure and a controller, wherein the sample replacing and electrode pressing structure is connected with the controller and mainly comprises a sample replacing unit and an electrode pressing unit;
the electrode pressing unit includes: the device comprises an experimental sample support table, a linear bearing, a guide shaft, a device bottom plate, a displacement stepping motor, an electrode mounting bracket and an electrode mounting rod;
at least two guide shafts are fixedly arranged on the device bottom plate; the experimental sample support platform is fixedly connected with the linear bearing, the linear bearing is sleeved on the guide shaft, and the experimental sample support platform is arranged in parallel with the device bottom plate through the linear bearing; the displacement stepping motor is arranged on the device bottom plate and is positioned below the experimental sample saddle; the output end of the displacement stepping motor is connected with the experimental sample support table to realize the up-and-down movement of the support table; the electrode mounting bracket is fixed on the device bottom plate, and a strip-shaped mounting hole is formed in the top plate of the electrode mounting bracket; the plurality of electrode mounting rods are arranged in the strip-shaped mounting holes and are positioned above the experimental sample support table, and the distance between the electrodes can be adjusted in the strip-shaped mounting holes to meet the experimental requirements;
the sample replacement unit comprises: the device comprises a belt seat bearing, a driving rolling shaft, a driven rolling shaft, a rotary stepping motor and a transmission assembly;
four belt seat bearings are fixedly arranged on the device bottom plate, wherein two belt seat bearings are used for supporting the driving rolling shaft, and the other two belt seat bearings are used for supporting the driven rolling shaft; the driving rolling shaft and the driven rolling shaft are arranged in parallel, and the rotating stepping motor drives the driving rolling shaft to rotate through the transmission assembly.
Further, the sample replacing device further comprises an electromagnetic isolation module, the electromagnetic isolation module is arranged between the controller and the sample replacing and electrode pressing structure, and after the sample replacing is finished, the electromagnetic isolation module is disconnected, so that the influence of complex electromagnetic environment in the experimental cavity on the controller is isolated.
Further, the device bottom plate on be provided with the switch support, install upper limit travel switch and lower limit travel switch on the switch support, ensure that the experimental sample saddle removes in upper and lower limit within range, avoided control system to break down, when the experimental sample saddle can't stop, with the bad hidden danger in electrode mounting support top.
Furthermore, the controller is a PLC console, and relevant parameters are set in the PLC console, so that operations such as replacement of experimental samples, electrode compression, electromagnetic interference isolation and the like can be realized through the PLC console.
Further, electrode installation pole include the guide arm to and from supreme lower lock nut, first retaining ring, spring, the second retaining ring of establishing in proper order outside the guide arm and go up lock nut and be used for connecting the electrode for the experiment down, realize compressing tightly of electrode and experimental sample through the compression of spring.
Furthermore, the sample replacing unit further comprises a damping wheel, and the damping wheel is installed between the driven rolling shaft and the bearing with the seat, so that a certain damping feeling is achieved when the sample is replaced, and the smoothness of sample replacement is guaranteed.
Furthermore, the transmission assembly in the sample replacing unit is a belt transmission assembly, the belt transmission assembly mainly comprises a synchronous belt and two synchronous belt wheels, one synchronous belt wheel is connected with the output end of the rotating stepping motor, and the other synchronous belt wheel is connected with the driving roller.
Along face flashover experimental apparatus, including the experiment cavity, its characterized in that: also comprises the sample replacing device;
the experimental cavity is provided with a high-pressure resistant aviation connector;
the sample replacing and electrode pressing structure of the sample replacing device is arranged in the experiment cavity, and the controller is arranged outside the experiment cavity; and cables for connecting the sample replacement and the electrode compression structure with the controller are connected to two ends of the high-pressure-resistant aviation connector.
Furthermore, the high-pressure resistant aviation connector is a multi-core aviation connector with the highest pressure resistance of 2.0 MPa.
The method for replacing the experimental sample by adopting the sample replacing device is characterized by comprising the following steps:
1) preparing an experimental sample:
if the experimental sample is a hard solid material sample:
1.1) fixing the experimental samples on the strip-shaped soft material at equal intervals;
1.2) winding the strip-shaped soft material fixed with the experimental sample into a reel;
1.3) mounting the reel onto a driven roller of a sample exchange unit;
1.4) leading heads of the scroll pass through the upper part of the experimental sample saddle and then are installed on the driving roller;
if the test sample is a soft film material sample:
1.1) directly winding the experimental sample into a reel;
1.2) mounting the reel on the driven roller;
1.3) leading heads of the scroll pass through the upper part of the experimental sample support table and then are connected to the driving roller;
2) mounting the experimental electrode on the electrode mounting rod, adjusting the distance between the electrodes to meet the experimental requirements, and ensuring the bottom of the electrode to be flat;
3) installing the sample replacing unit and the electrode pressing unit into an experiment cavity, connecting a power supply and control cable, and then adjusting the environment in the experiment cavity into an insulating environment to carry out an experiment;
4) replacing the sample:
when the sample needs to be replaced:
a. the electromagnetic isolation module is connected;
b. the controller controls the displacement stepping motor to drive the experimental sample tray to move downwards, so that the current experimental sample is separated from the experimental electrode;
c. the controller controls the rotary stepping motor to drive the driving roller to rotate for a set angle, and the experimental sample is conveyed to a set position on the experimental sample support platform;
d. the controller controls the displacement stepping motor to drive the test sample tray to move upwards, so that the replaced current test sample is tightly pressed with the test electrode;
e. the electromagnetic isolation module is disconnected and the experiment is started again.
Compared with the prior art, the invention has the following advantages:
1. the invention realizes the automatic and quick replacement of the experimental sample in the experimental cavity, does not need to open the experimental cavity, does not need to restore the insulating environment again, greatly saves the time, improves the efficiency of the surface flashover experiment, and simultaneously prevents the gas waste and the environmental pollution which are possibly caused in the sample replacement process.
2. According to the invention, the corresponding sample scroll is manufactured and installed on the driven roller, so that the rapid replacement of the soft film material sample and the hard solid material sample can be realized.
3. According to the invention, the electrode connecting rod is connected with the electrode mounting bracket through the guide rod and the spring, when the experimental sample saddle is lifted, the electrode is tightly connected with the experimental sample through the compression of the spring, and the contact effect is ensured.
4. The displacement of the experimental sample supporting table is limited by the two travel switches, so that the hidden danger that the electrode mounting bracket is damaged when the control system fails and the experimental sample supporting table cannot stop is avoided.
5. According to the invention, the electromagnetic isolation module is introduced between the PLC console and the execution mechanism, so that the interference caused by the complex electromagnetic environment in the experimental cavity on the cable is isolated from the PLC console, and the misoperation and downtime of the PLC console are avoided.
6. The PLC console adopts the touch screen as a human-computer interaction interface, and is convenient and simple to operate.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a rapid test sample exchange device according to the present invention;
FIG. 2 is a schematic view of a sample exchange and electrode compression configuration in accordance with the present invention;
FIG. 3 is a schematic front view of a sample exchange and electrode compression arrangement in accordance with the present invention;
FIG. 4 is a first schematic view of the sample exchange and electrode compression arrangement with the electrode mounting bracket removed;
FIG. 5 is a second schematic view of the sample exchange and electrode compression arrangement with the electrode mounting bracket removed;
FIG. 6 is a schematic view of a construction of a sample reel of hard solid material;
FIG. 7 is a schematic view of a sample roll of flexible film material;
description of reference numerals: 1-device bottom plate, 2-belt seat bearing, 3-driving roller, 4-synchronous belt wheel, 5-synchronous belt, 6-electrode mounting bracket, 7-electrode mounting rod, 8-experimental sample saddle, 9-linear bearing, 10-guide shaft, 11-displacement stepping motor, 12-rotary stepping motor, 13-driven roller, 14-lower limit travel switch, 15-upper limit travel switch, 16-hard solid material sample and 17-soft film material sample.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the sample replacing device for the surface flashover experiment provided by the invention comprises a controller, a sample replacing and electrode pressing structure, wherein when in use, the sample replacing and electrode pressing structure is arranged in an experiment cavity, and the controller is arranged outside the experiment cavity; the controller is used for controlling the sample replacement and the operation of the electrode compression structure, and the controller can adopt a PLC console; in order to ensure good air tightness in the experimental cavity, a high-pressure resistant aviation connector can be arranged on the experimental cavity, a cable for connecting the sample replacement and electrode compression structure with the controller is connected to two ends of the high-pressure resistant aviation connector, and the high-pressure resistant aviation connector can be a multi-core aviation connector with the highest pressure resistance of 2.0 MPa; in order to avoid the controller from being subjected to the electromagnetic interference of the sample replacing and electrode pressing structure, an electromagnetic isolation module can be arranged between the controller and the sample replacing and electrode pressing structure.
As shown in fig. 2 to 5, the sample replacing and electrode pressing structure in the sample replacing device of the present invention includes an electrode pressing unit and a sample replacing unit;
the electrode pressing unit comprises an experimental sample support table 8, a linear bearing 9, a guide shaft 10, a device bottom plate 1, a displacement stepping motor 11, an electrode mounting bracket 6, an electrode mounting rod 7, a lower limiting travel switch 14 and an upper limiting travel switch 15;
the guide shaft 10 is fixedly arranged on the device bottom plate 1, and the linear bearing 9 is sleeved on the guide shaft 10; the experimental sample support table 8 is fixedly connected with the linear bearing 9 and is arranged in parallel with the device bottom plate 1; the displacement stepping motor 11 is arranged on the device bottom plate 1 and is positioned below the experimental sample saddle 8; the output end of the displacement stepping motor 11 is connected with the experimental sample tray table 8 and drives the experimental sample tray table 8 to move up and down along the guide shaft 10; the number of the guide shafts 10 is at least two, and the guide shafts are arranged diagonally; in order to make the test sample saddle 8 move stably up and down, at least three guide shafts 10 are needed, the three guide shafts 10 are arranged at intervals, and the space in the guide shafts is used for placing a displacement stepping motor 11; in the embodiment, four guide shafts 10 are adopted and distributed in a quadrilateral shape; in order to ensure that the test sample saddle 8 acts within a set range, a switch bracket is arranged on the device bottom plate 1, and an upper limit travel switch 15 and a lower limit travel switch 14 with adjustable limit ranges are arranged on the switch bracket; the electrode mounting bracket 6 is fixed on the device bottom plate 1, and a strip-shaped mounting hole is formed in the top plate of the electrode mounting bracket 6; the electrode mounting rods 7 are arranged in the strip-shaped mounting holes and positioned above the experimental sample support table 8 and are used for connecting the experimental electrodes to realize the compression of the experimental electrodes and the experimental samples; the electrode mounting rod 7 comprises a guide rod, and a lower locking nut, a first check ring, a spring, a second check ring and an upper locking nut which are sequentially sleeved outside the guide rod from bottom to top, wherein the second check ring and the upper locking nut are used for fixing the guide rod in the strip-shaped mounting hole, and the lower locking nut is used for adjusting the compression amount of the spring; through adjusting the position of the guide rod 7 and the compression amount of the spring, the experimental electrode and the experimental sample placed on the experimental sample saddle 8 can be tightly pressed.
The sample replacing unit comprises a belt seat bearing 2, a driving rolling shaft 3, a driven rolling shaft 13, a rotary stepping motor 12 and a belt transmission component;
the number of the bearings 2 with seats is four, and every two bearings are fixedly arranged on the device bottom plate 1 in a group; the two groups of bearings 2 with seats are respectively used for supporting the driving roller 3 and the driven roller 13, and the driving roller 3 and the driven roller 13 are ensured to be parallel; a damping wheel is arranged between the driven rolling shaft 13 and the bearing 2 with a seat, so that a certain damping feeling is achieved when a sample is replaced, and the smoothness of sample replacement is ensured; the belt transmission component comprises a synchronous belt 5 and two synchronous belt wheels 4, wherein one synchronous belt wheel 4 is connected with the output end of the rotary stepping motor 12, and the other synchronous belt wheel 4 is connected with the driving roller 3; the rotary stepping motor 12 drives the driving roller 3 to rotate through a belt transmission component.
In the sample replacement process of the surface flashover experiment, the PLC control console is used for controlling the rotary stepping motor 12 and the displacement stepping motor 11 to work; the setting of electromagnetism isolation module is with the complicated electromagnetic environment isolation in controller and the experimental cavity, has avoided the interference that complicated electromagnetic environment arouses on the cable in the experimental cavity, leads to the maloperation or the downtime of PLC controller. According to the invention, the PLC console can realize the control of the electromagnetic isolation module, the sample replacing unit and the electrode pressing unit, the PLC console adopts a touch screen and is provided with a human-computer interaction interface, and the rotation angle of the active roller and the control mode of the experimental sample replacing device can be set through the human-computer interaction interface, wherein the control mode comprises an automatic control mode and a manual control mode, the automatic control mode is a key to complete the replacing operation of all samples, and the manual control mode is a step-by-step sample replacing operation.
The method comprises the following specific steps of:
first, experimental samples were prepared:
if the experimental sample is a hard solid material sample 16, fixing the experimental sample on the long-strip-shaped soft material at equal intervals, winding the long-strip-shaped soft material fixed with the experimental sample into a reel, as shown in fig. 6, installing the reel on a driven roller 13 of the sample replacing unit, and connecting a leading end of the reel to the driving roller 3 after passing through the upper part of the experimental sample saddle 8;
if the experimental sample is a soft film material sample, the film material is directly wound into a reel, as shown in fig. 7, the reel is mounted on the driven roller 13, and the leading end of the reel passes through the upper part of the experimental sample saddle 8 and then is connected to the driving roller 3.
Secondly, mounting the electrodes for experiments on the electrode mounting rods 7, adjusting the distance between the electrodes to meet the experiment requirements, and adjusting the electrode mounting rods 7 to ensure that the bottoms of the electrodes are smooth; with reference to fig. 1, the sample exchange unit and the electrode pressing unit were installed in the experimental chamber, and then power supply and control cables were connected.
Finally, after the preparation of the internal insulation environment of the experimental cavity is finished, the experiment is started, the experiment is finished once, the sample needs to be replaced, and the experimental sample is replaced under the control of the controller:
a. the electromagnetic isolation module is connected to supply power to the automatic experimental sample replacing device;
b. the controller controls the displacement stepping motor 11 to drive the experimental sample tray table 8 to move downwards to a lower limit travel switch 14, so that the current experimental sample is separated from the experimental electrode;
c. the controller controls the rotary stepping motor 12 to drive the driving roller 3 to rotate by a set angle, and a new experimental sample is transmitted to a set position on the experimental sample support table 8;
d. the controller controls the displacement stepping motor 11 to drive the experimental sample tray table 8 to move upwards to the upper limit travel switch 15, so that the replaced experimental sample is tightly pressed with the experimental electrode;
e. and the electromagnetic isolation module is disconnected, the way of electromagnetic interference on the PLC console in the experiment cavity is cut off, and the experiment is carried out again.
Claims (10)
1. Along face flashover experimental sample changes device, its characterized in that: the device comprises a sample replacing and electrode pressing structure and a controller, wherein the sample replacing and electrode pressing structure is connected with the controller and mainly comprises a sample replacing unit and an electrode pressing unit;
the electrode pressing unit includes: an experimental sample support table (8), a linear bearing (9), a guide shaft (10), a device bottom plate (1), a displacement stepping motor (11), an electrode mounting bracket (6) and an electrode mounting rod (7);
at least two guide shafts (10) are fixedly arranged on the device bottom plate (1); the experimental sample support table (8) is fixedly connected with the linear bearing (9), the linear bearing (9) is sleeved on the guide shaft (10), and the experimental sample support table (8) is arranged in parallel with the device bottom plate (1) through the linear bearing (9); the displacement stepping motor (11) is arranged on the device bottom plate (1) and is positioned below the experimental sample saddle (8); the output end of the displacement stepping motor (11) is connected with the experimental sample support table (8); the electrode mounting bracket (6) is fixed on the device bottom plate (1), and a strip-shaped mounting hole is formed in the top plate of the electrode mounting bracket (6); a plurality of electrode mounting rods (7) are arranged in the strip-shaped mounting holes and are positioned above the experimental sample support table (8);
the sample replacement unit comprises: the device comprises a belt seat bearing (2), a driving rolling shaft (3), a driven rolling shaft (13), a rotary stepping motor (12) and a transmission assembly;
four bearings (2) with seats are fixedly arranged on the device bottom plate (1), wherein two bearings (2) with seats are used for supporting the driving rolling shaft (3), and the other two bearings (2) with seats are used for supporting the driven rolling shaft (13); the driving rolling shaft (3) and the driven rolling shaft (13) are arranged in parallel, and the rotating stepping motor (12) drives the driving rolling shaft (3) to rotate through the transmission component.
2. The edgewise flashover experimental sample exchange device according to claim 1, characterized in that: the sample replacing device also comprises an electromagnetic isolation module, and the electromagnetic isolation module is arranged between the controller and the sample replacing and electrode pressing structure.
3. The edgewise flashover experimental sample exchange device according to claim 1 or 2, characterized in that: the device is characterized in that a switch bracket is arranged on the device bottom plate (1), and an upper limit travel switch (15) and a lower limit travel switch (14) are installed on the switch bracket.
4. The edgewise flashover experimental sample exchange device according to claim 3, characterized in that: the controller is a PLC console.
5. The edgewise flashover experimental sample exchange device according to claim 1, characterized in that: the electrode mounting rod (7) comprises a guide rod, a lower locking nut, a first check ring, a spring, a second check ring and an upper locking nut, wherein the lower locking nut, the first check ring, the spring, the second check ring and the upper locking nut are sequentially sleeved outside the guide rod from bottom to top.
6. The edgewise flashover experimental sample exchange device according to claim 1, characterized in that: the sample replacing unit further comprises a damping wheel, and the damping wheel is installed between the driven rolling shaft (13) and the bearing (2) with the seat.
7. The edgewise flashover experimental sample exchange device according to claim 1, characterized in that: the transmission assembly in the sample replacing unit is a belt transmission assembly which mainly comprises a synchronous belt (5) and two synchronous belt wheels (4), wherein one synchronous belt wheel (4) is connected with the output end of a rotary stepping motor (12), and the other synchronous belt wheel (4) is connected with a driving rolling shaft (3).
8. Along face flashover experimental apparatus, including the experiment cavity, its characterized in that: further comprising a sample exchange device according to any one of claims 1 to 7;
the experimental cavity is provided with a high-pressure resistant aviation connector;
the sample replacing and electrode pressing structure of the sample replacing device is arranged in the experiment cavity, and the controller is arranged outside the experiment cavity; and cables for connecting the sample replacement and the electrode compression structure with the controller are connected to two ends of the high-pressure-resistant aviation connector.
9. The surface flashover experimental apparatus of claim 8, wherein: the high-pressure resistant aviation connector is a multi-core aviation connector with the highest pressure resistance of 2.0 MPa.
10. Method for changing a test sample with a sample changing device according to any of claims 1 to 7, comprising the steps of:
1) preparing an experimental sample:
if the test sample is a hard solid material sample (16):
1.1) fixing the experimental samples on the strip-shaped soft material at equal intervals;
1.2) winding the strip-shaped soft material fixed with the experimental sample into a reel;
1.3) mounting the reel onto a driven roller (13) of a sample exchange unit;
1.4) leading the head of the reel to pass through the upper part of an experimental sample saddle (8) and then be installed on a driving roller (3);
if the test sample is the flexible film material sample (17):
1.1) directly winding the experimental sample into a reel;
1.2) mounting the reel onto a driven roller (13);
1.3) leading the head of the reel to pass through the upper part of an experimental sample saddle (8) and then be connected to the driving roller (3);
2) mounting the experimental electrode on an electrode mounting rod (7), adjusting the distance between the electrodes to meet the experimental requirements, and ensuring the bottom of the electrode to be flat;
3) installing the sample replacing unit and the electrode pressing unit into an experiment cavity, connecting a power supply and control cable, and then adjusting the environment in the experiment cavity into an insulating environment to carry out an experiment;
4) replacing the sample:
when the sample needs to be replaced:
a. the electromagnetic isolation module is connected;
b. the controller controls the displacement stepping motor (11) to drive the experimental sample tray (8) to move downwards, so that the current experimental sample is separated from the experimental electrode;
c. the controller controls the rotary stepping motor (12) to drive the driving roller (3) to rotate for a set angle, and an experimental sample is conveyed to a set position on the experimental sample supporting table (8);
d. the controller controls the displacement stepping motor (11) to drive the experimental sample tray (8) to move upwards, so that the replaced current experimental sample is tightly pressed with the experimental electrode;
e. the electromagnetic isolation module is disconnected.
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| CN201810146481.5A CN108398620B (en) | 2018-02-12 | 2018-02-12 | Surface flashover experiment sample replacing device, experiment device and sample replacing method |
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| CN201810146481.5A CN108398620B (en) | 2018-02-12 | 2018-02-12 | Surface flashover experiment sample replacing device, experiment device and sample replacing method |
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| CN108398620B true CN108398620B (en) | 2020-10-09 |
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| CN114602322B (en) * | 2022-02-16 | 2023-06-27 | 中国科学院水生生物研究所 | Magazine type filter membrane replacement system capable of being used for environmental DNA sampling |
| CN114602324B (en) * | 2022-02-18 | 2023-06-27 | 中国科学院水生生物研究所 | Clamping type filter membrane replacement system capable of being used for environmental DNA sampling |
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| CN106442586B (en) * | 2016-09-22 | 2018-12-25 | 福州大学 | A kind of more sample automatic sample-changing devices of X-ray polycrystalline diffractometer |
| CN206975166U (en) * | 2017-07-03 | 2018-02-06 | 景德镇陶瓷大学 | A kind of liquid dielectric breakdown voltage test device |
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2018
- 2018-02-12 CN CN201810146481.5A patent/CN108398620B/en active Active
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