CN107490654B - Quick-release high-voltage device for electrostatic discharge ignition test performance in pure oxygen environment - Google Patents
Quick-release high-voltage device for electrostatic discharge ignition test performance in pure oxygen environment Download PDFInfo
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Abstract
The invention discloses a quick-release high-voltage device for a pure oxygen environment electrostatic discharge ignition test, which is provided with an ignition test container consisting of a bottle body and a high-voltage cavity; bottle valve joints are respectively arranged at bottle openings at two ends of the bottle body, wherein one bottle valve joint is provided with a first observation hole, and the other bottle valve joint is provided with a barometer, a safety valve, an air inlet and an air outlet; a frame for fixing the bottle body is arranged outside the bottle body, and a second observation hole, a high-voltage electrode lead-in end and a grounding electrode are arranged on the high-voltage cavity; and the grounding electrode is provided with an object carrying platform. The invention has the advantages of small structure, flexible installation, convenient disassembly, convenient operation, good sealing performance, high bearing pressure, convenient observation and low manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of static electricity, relates to a static test device, and particularly relates to a quick-release high-voltage device for electrostatic discharge ignition test performance in a pure oxygen environment.
Background
At present, electrostatic electrification and discharge processes are frequently generated in normal work and life of people, destructive results can be generated in severe cases, and particularly, under the environment of high-voltage pure oxygen, the electrostatic ignition characteristics of related materials can be greatly changed, and disastrous results can be generated.
In a pure oxygen pressure environment, an electrostatic discharge ignition test is carried out, so as to evaluate the electrostatic safety of the material used in the pure oxygen environment. However, such works are only reported in documents at home, and mainly due to the limitations of the electrostatic ignition test device for related materials in a high-voltage pure oxygen environment, the current electrostatic discharge ignition test is performed in a lower air pressure range, and the safety, operability, visibility and the like of the test device are generally poor, so that a novel electrostatic discharge ignition test device is needed to solve the problems in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the quick-release high-voltage device for the electrostatic discharge ignition test in the pure oxygen environment, so that the electrostatic discharge ignition test in the high-oxygen environment can be realized, and the experimental phenomenon can be observed in real time through monitoring equipment, so that the aims of small structure, flexible installation, convenient operation, good sealing performance and convenient observation are fulfilled, and the safety is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a quick-release high-voltage device for a pure oxygen environment electrostatic discharge ignition test, which is structurally characterized in that: arranging an ignition test container consisting of a bottle body and a high-pressure cavity;
the bottle body is a double-spliced structure consisting of a first bottle body and a second bottle body; the first bottle body and the second bottle body are respectively connected to two ends of the high-pressure cavity and form a closed structure;
bottle valve joints are respectively arranged at the bottle mouths of the first bottle body and the second bottle body; a conical first observation hole is formed in the bottle valve joint of any bottle opening; a gas-pressure meter, a safety valve, a gas inlet and a gas outlet are respectively arranged on the bottle valve joint of the other bottle mouth;
flanges are respectively arranged on the outer sides of the first bottle body and the second bottle body and are in through connection through a screw rod, and two ends of the outer side of the screw rod are fastened through nuts and gaskets, so that a sealing and fixedly connecting structure of the bottle body and a high-pressure cavity is formed;
the high-voltage cavity is of a cylindrical structure, and a conical second observation hole and a high-voltage electrode lead-in end are respectively arranged on one side of the high-voltage cavity; copper pads with curved surface structures are arranged right below the high-voltage electrode leading-in end and the second observation hole;
the other side of the high-pressure cavity is provided with a grounding electrode; the grounding electrode is a copper bar welded on the wall of the high-pressure cavity, and a loading platform is arranged on the grounding electrode;
the high voltage electrode lead-in comprises: the discharge electrode comprises a conical insulating protective sleeve and a discharge electrode penetrating through the insulating protective sleeve; the discharge electrode is of a threaded rod-shaped structure, the tail end of the discharge electrode is connected with an external high-voltage charge-discharge circuit, and a discharge tip of the leading-in end of the high-voltage electrode penetrates through the copper pad and faces the loading platform.
The quick-release high-pressure device is also characterized in that:
the sealing groove is formed in each of two ends of the high-pressure cavity, a sealing ring is arranged in each sealing groove, and the first bottle body and the second bottle body are connected with the high-pressure cavity through the sealing grooves and the sealing grooves.
The outside of the bottle mouth provided with the first observation hole is sleeved with a reinforcing hoop, and a fastening structure is formed by bolts.
The first observation hole is externally connected with monitoring observation equipment, and the second observation hole is externally connected with a light source.
The high-voltage charge-discharge circuit is a capacitance charge-discharge circuit, and comprises: the device comprises an electrostatic generator, an energy storage capacitor, a discharge resistor, a high-voltage switch and a current-limiting resistor;
the positive electrode of the static generator is connected with one end of the high-voltage switch through the current-limiting resistor; the other end of the high-voltage switch is connected with the discharge resistor; the grounding end of the high-voltage switch is grounded through the energy storage capacitor, and the negative electrode of the electrostatic generator is directly grounded.
Compared with the prior art, the invention has the beneficial effects that:
1. the test device can realize an internal gas pressure environment of up to 6MPa, adopts the adjustable discharge gap, can control the adjustment of the oxygen gas pressure environment and the adjustment of the controllable discharge model, can obtain the minimum discharge energy for igniting a test piece in a high-pressure oxygen environment, provides more perfect test parameters, and has important significance for the research of the electrostatic ignition characteristic of the test piece in the high-pressure oxygen environment.
2. According to the invention, the copper pad is arranged below the discharge electrode and the observation hole of the light source, so that high-temperature splashes generated by combustion are effectively prevented from splashing on the observation hole, and the safety of the test is ensured.
3. According to the observation hole, the insulating protective sleeve at the leading-in end of the high-voltage electrode is of a conical surface structure, so that the safety is improved while the air tightness is ensured.
4. The test device has the advantages of small and exquisite structure, strong process flexibility, good sealing performance and convenient operation, and the bottle body and the high-pressure cavity adopt a double-spliced sealing structure.
Drawings
FIG. 1 is a schematic view of the structure of the test apparatus of the present invention;
FIG. 2 is a side view of the structure of the test device of the present invention;
FIG. 3 is a schematic diagram of a high-voltage charge-discharge circuit for testing in the invention
The reference number in the figure is 1-bottle body, 2-first bottle body, 3-second bottle body, 4-high pressure cavity, 5-bottle valve joint, 6-pressure gauge, 7-safety valve, 8-air inlet, 9-air outlet, 10-first observation hole, 11-second observation hole, 12-reinforcing hoop, 13-high voltage electrode leading-in end, 14-insulating protective sleeve, 15-discharge electrode, 16-grounding electrode, 17-copper pad, 18-carrying platform, 19-flange, 20-screw rod, 21-nut, 22-bolt, 23-gasket, 24-sealing groove and 25-test piece.
Detailed Description
In this embodiment, a quick-release high-voltage apparatus for a pure oxygen environment electrostatic discharge ignition test is provided with an ignition test container composed of a bottle 1 made of stainless steel and a high-voltage cavity 4, as shown in fig. 1; the pressure bearing capacity of the ignition test container can reach 6 MPa;
as shown in fig. 1, the bottle body 1 is a double-assembly structure composed of a first bottle body 2 and a second bottle body 3; the first bottle body 2 and the second bottle body 3 are respectively connected to two ends of the high-pressure cavity 4 to form a closed structure; in specific implementation, the wall thickness of the high-pressure cavity is greater than that of the bottle body 1, the two ends of the high-pressure cavity 4 are provided with sealing grooves 24, the sealing grooves 24 are circular grooves matched with the inner and outer diameters of the first bottle body 2 and the second bottle body 3, an O-shaped sealing ring is arranged in each sealing groove 24, and the first bottle body 2 and the second bottle body 3 are connected with the high-pressure cavity 4 through the sealing grooves 24 and the sealing grooves 24.
A gas-pressure meter 6, a safety valve 7, a gas inlet 8 and a gas outlet 9 are respectively arranged on the bottle valve joint 5 of the other bottle mouth; when the pressure in the pilot test container reaches 6Mpa, the safety valve 7 realizes the pressure relief action.
A frame for fixing the bottle body is arranged outside the bottle body 1, the frame is characterized in that flanges 19 are respectively arranged on the outer sides of the first bottle body 2 and the second bottle body 3, the flanges are connected with corresponding flange holes of the two flanges in a penetrating manner through a screw rod 20, and two ends of the outer side of the screw rod 20 are fastened through a nut 21 and a gasket 23, so that a sealing and fixedly connecting structure of the bottle body 1 and the high-pressure cavity 4 is formed;
the high-voltage cavity 4 is of a cylindrical structure, and a second observation hole 11 and a high-voltage electrode lead-in end 13 which are made of conical organic glass materials are respectively arranged on one side of the high-voltage cavity 4; in specific implementation, the high-voltage electrode lead-in end 13 penetrates through a through hole of the high-voltage cavity 4, and the high-voltage electrode lead-in end 13 is tightly bonded and fixed by injecting glue into the through hole and ensures good air tightness. The second observation hole 11 is externally connected with a light source to provide brightness for the interior of the ignition container, so that observation is facilitated; a copper pad 17 with a curved surface structure is arranged right below the high-voltage electrode lead-in end 13 and the second observation hole 11; the copper pad 17 is of a curved surface structure consistent with the inner wall of the high-pressure cavity, so that splashing generated by combustion is effectively prevented from splashing to the second observation hole 11, and the safety of the test is guaranteed.
The other side of the high-voltage cavity 4 is provided with a grounding electrode 16; the grounding electrode 16 is a copper bar welded on the wall of the high-pressure cavity and is connected with the grounding end of an external high-voltage charging and discharging circuit, and a loading platform 18 made of copper is arranged on the grounding electrode 16;
the high voltage electrode lead-in 13 comprises: a conical insulating protective sleeve 14 and a discharge electrode 15 penetrating through the insulating protective sleeve 14; wherein, the insulating protective sleeve 14 is completely matched with the wall of the high-voltage cavity; the discharge electrode 15 is in a threaded rod-shaped structure, the tail end of the discharge electrode 15 is exposed out of the high-voltage cavity 4 and is connected with the high-voltage end of an external high-voltage charge and discharge circuit, and the conical discharge tip of the high-voltage electrode lead-in end 13 extends into the inner side of the high-voltage cavity 4, penetrates through the copper pad 17 and faces the loading platform 18;
as shown in fig. 3, the high voltage charging and discharging circuit is a capacitive charging and discharging circuit, and includes: the device comprises an electrostatic generator, an energy storage capacitor, a high-voltage switch, a current-limiting resistor and a discharge resistor, and the materials are discharged and ignited through the charge-discharge capacitor and the discharge resistor.
The positive pole of the static generator is connected with one end of the high-voltage switch through a current-limiting resistor; the other end of the high-voltage switch is connected with the discharge resistor; the grounding end of the high-voltage switch is grounded through the energy storage capacitor, and the negative electrode of the electrostatic generator is directly grounded. The discharge distance between the discharge electrode and the ground electrode 16 can be adjusted by moving the ground electrode 16 up and down. In this embodiment, the high-voltage charging and discharging circuit may construct different electrostatic discharge models by adjusting the energy storage capacitor and the discharging voltage.
Claims (5)
1. A quick-release high-voltage device for a pure oxygen environment electrostatic discharge ignition test is characterized in that: arranging an ignition test container consisting of a bottle body (1) and a high-pressure cavity (4);
the bottle body (1) is a double-spliced structure consisting of a first bottle body (2) and a second bottle body (3); the first bottle body (2) and the second bottle body (3) are respectively connected to two ends of the high-pressure cavity (4) to form a closed structure;
bottle valve joints (5) are respectively arranged at the bottle mouths of the first bottle body (2) and the second bottle body (3); a conical first observation hole (10) is arranged on the bottle valve joint (5) of any bottle mouth; a gas-pressure meter (6), a safety valve (7), a gas inlet (8) and a gas outlet (9) are respectively arranged on the bottle valve joint (5) of the other bottle mouth;
flanges (19) are respectively arranged on the outer sides of the first bottle body (2) and the second bottle body (3) and are in through connection through a screw rod (20), and two ends of the outer side of the screw rod (20) are fastened through a nut (21) and a gasket (23), so that a sealing and fixedly connecting structure of the bottle body (1) and the high-pressure cavity (4) is formed;
the high-voltage cavity (4) is of a cylindrical structure, and a conical second observation hole (11) and a high-voltage electrode lead-in end (13) are respectively arranged on one side of the high-voltage cavity (4); a copper pad (17) with a curved surface structure is arranged right below the high-voltage electrode lead-in end (13) and the second observation hole (11);
a grounding electrode (16) is arranged on the other side of the high-pressure cavity (4); the grounding electrode (16) is a copper bar welded on the wall of the high-pressure cavity, and a loading platform (18) is arranged on the grounding electrode (16);
the high voltage electrode lead-in (13) comprises: a conical insulating protective sleeve (14) and a discharge electrode (15) penetrating through the insulating protective sleeve (14); the discharge electrode (15) is in a threaded rod-shaped structure, the tail end of the discharge electrode (15) is connected with an external high-voltage charging and discharging circuit, and the discharge tip of the high-voltage electrode lead-in end (13) penetrates through the copper pad (17) and faces the loading platform (18).
2. The quick-release high-pressure apparatus according to claim 1, characterized in that: seal groove (24) have been seted up at the both ends of high pressure cavity (4), and be equipped with the sealing washer in seal groove (24), first body (2) and second body (3) pass through seal groove (24) and seal groove (24) with high pressure cavity (4) are connected.
3. The quick-release high-pressure apparatus according to claim 1, characterized in that: a reinforcing hoop (12) is sleeved on the outside of the bottle mouth provided with the first observation hole (10), and a fastening structure is formed by bolts (22).
4. The quick-release high-pressure apparatus according to claim 1, characterized in that: the first observation hole (10) is externally connected with monitoring observation equipment, and the second observation hole (11) is externally connected with a light source.
5. The quick-release high-pressure apparatus according to claim 1, characterized in that: the high-voltage charge-discharge circuit is a capacitance charge-discharge circuit, and comprises: the device comprises an electrostatic generator, an energy storage capacitor, a discharge resistor, a high-voltage switch and a current-limiting resistor;
the positive electrode of the static generator is connected with one end of the high-voltage switch through the current-limiting resistor; the other end of the high-voltage switch is connected with the discharge resistor; the grounding end of the high-voltage switch is grounded through the energy storage capacitor, and the negative electrode of the electrostatic generator is directly grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710898436.0A CN107490654B (en) | 2017-09-28 | 2017-09-28 | Quick-release high-voltage device for electrostatic discharge ignition test performance in pure oxygen environment |
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| CN201710898436.0A CN107490654B (en) | 2017-09-28 | 2017-09-28 | Quick-release high-voltage device for electrostatic discharge ignition test performance in pure oxygen environment |
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| CN107490654A CN107490654A (en) | 2017-12-19 |
| CN107490654B true CN107490654B (en) | 2023-01-31 |
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| CN109188136A (en) * | 2018-09-07 | 2019-01-11 | 合肥依科普工业设备有限公司 | Static characteristic experimental system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404986A (en) * | 2016-08-31 | 2017-02-15 | 上海安平静电科技有限公司 | Test device and test method for electrostatic discharge ignition |
| CN206223737U (en) * | 2016-08-31 | 2017-06-06 | 上海安平静电科技有限公司 | A kind of static discharge ignites experimental provision |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404986A (en) * | 2016-08-31 | 2017-02-15 | 上海安平静电科技有限公司 | Test device and test method for electrostatic discharge ignition |
| CN206223737U (en) * | 2016-08-31 | 2017-06-06 | 上海安平静电科技有限公司 | A kind of static discharge ignites experimental provision |
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