Arc extinguish chamber detection device and detection method

Abstract

The invention provides an arc extinguish chamber detection device and method, and the device comprises a pedestal, the upper surface of the pedestal is provided with a flexible positioning assembly, and the interior of the flexible positioning assembly is provided with a vacuum arc extinguish chamber. The flexible positioning assembly comprises a mounting base, a limiting groove, a double-end lead screw, a driving motor, a positioning arm, two positioning clamping jaws, a positioning ball, a positioning tension spring, four positioning rods and two sliding blocks. And the limiting groove is formed in the mounting seat. The driving motor drives the double-end lead screw to rotate, the double-end lead screw drives the two sliding blocks through threads, the sliding blocks drive the positioning arms, then the two positioning arms can get close to each other, the positioning arms drive the positioning clamping jaws to be attached to the outer wall of the vacuum arc-extinguishing chamber, and therefore the position of the vacuum arc-extinguishing chamber is limited. According to the invention, flexible positioning of the vacuum arc-extinguishing chamber can be realized through the flexible positioning assembly so as to adapt to vacuum arc-extinguishing chambers of different sizes or specifications, and the accuracy and efficiency of vacuum degree detection are ensured.

Description

Technical Field

[0001] The invention relates to a detection device and a detection method, in particular to an arc extinguishing chamber detection device and a detection method, and belongs to the technical field of arc extinguishing chamber detection. Background Art

[0002] The vacuum interrupter, also known as the vacuum switch tube or vacuum bubble, is the core component of the vacuum switch and the core component of the medium and high voltage power switch. The vacuum interrupter is mainly composed of a pair of electrodes (contacts) sealed in a vacuum and other parts. It uses the excellent insulation and arc extinguishing properties of the vacuum to achieve the closing or breaking of the circuit. When the vacuum switch breaks the current, the two contacts of the interrupter separate and an arc is generated between them. The arc is extinguished when the current naturally passes through zero, and the circuit is broken.

[0003] At present, vacuum testers on the market basically use the magnetron discharge method for measurement, that is, the two contacts of the vacuum arc chamber are pulled apart by a certain distance, an electric field pulse high voltage is applied, the arc chamber is placed in a solenoid coil or a new electromagnetic coil is placed outside the arc chamber, and a large current is passed through the coil, thereby generating a pulse magnetic field synchronized with the high voltage in the arc chamber. According to the different sizes of the ion current, the vacuum condition inside the arc chamber is obtained. However, most of the vacuum testers produced on the market are portable stand-alone devices, which require manual operation to complete the detection process, have low detection efficiency, and are not suitable for large-scale and high-efficiency detection needs.

[0004] A known Chinese authorized invention (Announcement No.: CN104576182B) discloses a vacuum degree detection device for a vacuum interrupter chamber, wherein the detection device realizes the positioning and the pulling distance of the interrupter chamber to be tested through the cooperation of a bracket, a positioning mechanism and a pulling mechanism, so that the vacuum degree in the interrupter chamber to be tested can be detected after the magnetic control coil is energized. The detection device will rely on the cooperation between various mechanisms and the frame to realize the vacuum degree detection in the interrupter chamber to be tested, thereby improving the vacuum degree detection efficiency of the interrupter chamber to be tested;

[0005] Although it realizes the detection of the vacuum degree of the arc extinguishing chamber, there is a significant problem in the actual operation, especially when the arc extinguishing chamber is installed for detection:

[0006] There is a lack of flexible positioning mechanism for the arc extinguishing chamber. Therefore, when faced with arc extinguishing chambers of different specifications or models, the existing installation and detection systems are difficult to ensure good adaptability and versatility. The lack of a flexible positioning mechanism means that the detection system cannot be automatically or easily adjusted to adapt to these changes, which not only increases the difficulty of installation and detection, but also affects the accuracy and efficiency of detection. Therefore, an arc extinguishing chamber detection device and detection method are proposed. Summary of the invention

[0007] In view of this, the present invention provides an arc extinguishing chamber detection device and a detection method to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0008] The technical solution of the embodiment of the present invention is implemented as follows: an arc extinguishing chamber detection device comprises a base, a flexible positioning component is installed on the upper surface of the base, and a vacuum arc extinguishing chamber is arranged in the flexible positioning component;

[0009] The flexible positioning assembly includes a mounting seat, a limiting groove, a double-headed screw, a driving motor, a positioning arm, two positioning claws, a positioning ball, a positioning tension spring, four positioning rods and two slide blocks;

[0010] The limiting groove is opened inside the mounting seat, the two sliders are symmetrically slidably connected to the inner wall of the limiting groove, the two sliders are symmetrically threadedly connected to the outer wall of the double-headed screw, the driving motor is installed on one side of the mounting seat, the positioning arm is fixedly connected to the front surface of the slider, the four positioning rods are symmetrically slidably connected to the inside of the positioning arm, one end of the four positioning rods is fixedly connected to the positioning clamping claw, the positioning tension spring is sleeved on the outer wall of the positioning rod, and the positioning balls are evenly installed on the inner wall of the positioning clamping claw.

[0011] Further preferably, one end of the double-headed screw is rotatably connected to one side of the inner wall of the limiting groove, the other end of the double-headed screw is fixedly connected to the driving motor, and the mounting seat is installed on the upper surface of the base.

[0012] Further preferably, the vacuum arc extinguishing chamber is located between the two positioning jaws and fits with the positioning ball, one end of the positioning tension spring is fixedly connected to the positioning arm, and the other end of the positioning tension spring is fixedly connected to the end of the positioning rod.

[0013] Further preferably, an adjustment assembly is also installed on the upper surface of the base, and the adjustment assembly includes a fixed seat, a rack, a magnetic control coil, a mounting plate, a sliding seat, four sliding rods, a locking spring, a toothed plate, a handle, a connecting rod and a mounting groove;

[0014] The magnetic control coil is installed on the upper surface of the mounting plate, the mounting plate is fixedly connected to one side of the sliding seat, the sliding seat is slidably connected to the inside of the fixed seat, the rack is fixedly connected to the inner front wall of the fixed seat, the mounting groove is opened on the front surface of the sliding seat, the four sliding rods are symmetrically fixedly connected to the rear surface of the tooth plate, the locking spring is sleeved on the outside of the sliding rod, the front surface of the tooth plate is meshed and connected to the rear surface of the rack, and the handle is fixedly connected to the tooth plate through a connecting rod.

[0015] Further preferably, the sliding rod is slidably connected to the inside of the sliding seat, one end of the locking spring presses against the tooth plate, the other end of the locking spring presses against the inner rear wall of the mounting groove, and the tooth plate is slidably connected to the inside of the mounting groove.

[0016] Further preferably, a clamping assembly is provided above the vacuum interrupter, and the clamping assembly comprises a limit cylinder, a top plate, two guide rods, a pressure plate and an upper contact;

[0017] The top plate is installed on the upper surface of the mounting seat, the limit cylinder is installed on the upper surface of the top plate, the pressure plate is fixedly connected to the cylinder shaft of the limit cylinder, the bottom ends of the two guide rods are symmetrically fixedly connected to the upper surface of the pressure plate, the guide rods are slidably connected to the inside of the top plate, the upper contact is installed on the lower surface of the pressure plate, and the upper contact is in contact with the moving contact of the vacuum arc chamber.

[0018] Further preferably, a buffer assembly is installed inside the base, and the buffer assembly includes a buffer plate, a lower contact, a support spring and four support rods;

[0019] A groove is provided on the upper surface of the base, the bottom ends of the four support rods are symmetrically fixedly connected to the inner bottom wall of the groove, the buffer plate is slidably connected to the outer side wall of the support rod, the lower contact is installed on the upper surface of the buffer plate, the support spring is sleeved on the outer side wall of the support rod, the buffer plate is slidably connected to the inner side wall of the groove, one end of the support spring supports the buffer plate, and the other end of the support spring supports the inner bottom wall of the groove.

[0020] Further preferably, the lower contact is in contact with the static contact of the vacuum arc extinguishing chamber, and a vacuum detector is installed on the upper surface of the mounting seat. The vacuum detector is connected to the magnetron coil through two magnetic field voltage lines, the ion current line of the vacuum detector is electrically connected to the upper contact, and the high-voltage output line of the vacuum detector is electrically connected to the upper contact.

[0021] Further preferably, the magnetron coil is located on one side of the vacuum interrupter.

[0022] A method for detecting an arc extinguishing chamber comprises the following steps:

[0023] Step 1: Place the vacuum interrupter on the surface of the buffer plate, and fit the static contact of the vacuum interrupter with the lower contact on the surface of the buffer plate;

[0024] Step 2: The two positioning jaws are brought close to each other to position the vacuum interrupter, and the positioning jaws are fitted to the outer wall of the vacuum interrupter through the positioning balls;

[0025] Step 3: The limit cylinder pushes the pressure plate downward, and the pressure plate drives the upper contact to contact the moving contact of the vacuum interrupter. The pressure plate generates pressure on the vacuum interrupter, and the buffer plate moves downward. The support spring pushes the buffer plate in the opposite direction, and the two contacts of the vacuum interrupter contact the upper contact and the lower contact respectively, and the position of the vacuum interrupter is fixed.

[0026] Step 4: Use the handle to adjust the position of the sliding seat, and the sliding seat drives the magnetic control coil to move the magnetic control coil to a position close to the moving contact of the vacuum interrupter;

[0027] Step 5: Start the vacuum degree detector, pass a large current through the magnetron coil, generate a pulse magnetic field synchronized with the high voltage in the vacuum interrupter, apply a high voltage pulse between the two contacts of the vacuum interrupter, and form a high voltage electric field;

[0028] Step 6: The vacuum detector measures the three current values ​​of leakage current, total current and ion current, and calculates the vacuum degree of the arc extinguishing chamber.

[0029] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0030] 1. The present invention drives the double-headed screw to rotate by a driving motor, and the double-headed screw drives two sliders through threads, and the slider drives the positioning arm, so that the two positioning arms can be brought close to each other, and the positioning arm drives the positioning claws to fit with the outer wall of the vacuum arc chamber, thereby limiting the position of the vacuum arc chamber. Through this driving method, the two positioning claws can clamp vacuum arc chambers of different sizes or specifications, thereby enhancing the applicability. Under the pull of the positioning tension spring, the two positioning claws remain in contact with the vacuum arc chamber, and since the positioning tension spring is provided, the vacuum arc chamber can be prevented from being damaged by being clamped. Compared with the prior art, the present invention can achieve flexible positioning of the vacuum arc chamber through a flexible positioning component to adapt to vacuum arc chambers of different sizes or specifications, thereby reducing the difficulty of installation and detection of the vacuum arc chamber and ensuring the accuracy and efficiency of vacuum degree detection.

[0031] 2. The present invention pushes the tooth plate through the handle to separate the tooth plate from the rack, and then pulls the handle, the sliding seat slides in the fixed seat, the sliding seat drives the mounting plate, and the mounting plate drives the magnetron coil, and then the position of the magnetron coil can be adjusted at this time, and the magnetron coil is moved to a position corresponding to the moving contact in the vacuum interrupter. By adjusting the position of the magnetron coil in this way, it can be adjusted according to usage requirements to be suitable for vacuum degree detection of vacuum interrupters of different sizes.

[0032] 3. The present invention pushes the top plate through the limit cylinder, and the top plate drives the upper contact to move downward, so that the upper contact can fit with the top of the vacuum interrupter, that is, the upper contact and the moving contact of the vacuum interrupter are connected. When the clamping assembly presses and positions the vacuum interrupter, the vacuum interrupter fits with the lower contact, and the buffer plate moves downward at the same time, and the support spring is compressed. At this time, under the reaction force of the support spring, the vacuum interrupter fits tightly with the lower contact and the upper contact and is connected. By setting the buffer assembly, on the one hand, it can be ensured that the vacuum interrupter will not be crushed, and on the other hand, it can be ensured that the upper contact and the lower contact can respectively contact well with the contacts of the vacuum interrupter.

[0033] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural diagram of an arc extinguishing chamber detection device of the present invention;

[0036] Figure 2 It is a schematic diagram of the installation position of the flexible positioning component and the adjustment component of the present invention;

[0037] Figure 3 It is a structural diagram of the flexible positioning assembly of the present invention;

[0038] Figure 4 It is a structural diagram of the positioning clamp of the present invention;

[0039] Figure 5 It is a structural diagram of the regulating component of the present invention;

[0040] Figure 6 This is a schematic diagram of the installation position of the tooth plate of the present invention;

[0041] Figure 7 It is a structural diagram of the buffer assembly of the present invention;

[0042] Figure 8 It is a structural diagram of the clamping assembly of the present invention.

[0043] Reference numerals: 101, flexible positioning assembly; 11, mounting seat; 12, limiting groove; 13, double-headed screw; 14, driving motor; 15, positioning arm; 16, positioning clamping claw; 17, positioning ball; 18, positioning tension spring; 19, positioning rod; 20, slider; 301, adjustment assembly; 31, fixing seat; 32, rack; 33, magnetic control coil; 34, mounting plate; 35, sliding seat; 36, sliding rod; 37 , locking spring; 38, tooth plate; 39, handle; 40, connecting rod; 41, mounting groove; 501, buffer assembly; 51, buffer plate; 52, lower contact; 53, support spring; 54, support rod; 601, clamping assembly; 60, limit cylinder; 61, top plate; 62, guide rod; 63, pressure plate; 64, upper contact; 65, vacuum detector; 66, base; 67, groove; 68, vacuum arc chamber. DETAILED DESCRIPTION

[0044] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0045] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides an arc extinguishing chamber detection device, including a base 66, a flexible positioning component 101 is installed on the upper surface of the base 66, and a vacuum arc extinguishing chamber 68 is arranged in the flexible positioning component 101. The flexible positioning component 101 can realize flexible positioning of the vacuum arc extinguishing chamber 68 to adapt to vacuum arc extinguishing chambers 68 of different sizes or specifications, thereby reducing the difficulty of installation and detection of the vacuum arc extinguishing chamber 68 and ensuring the accuracy and efficiency of vacuum degree detection;

[0047] The flexible positioning assembly 101 includes a mounting seat 11, a limiting groove 12, a double-ended screw 13, a driving motor 14, a positioning arm 15, two positioning claws 16, a positioning ball 17, a positioning tension spring 18, four positioning rods 19 and two sliders 20;

[0048] The limiting groove 12 is provided inside the mounting seat 11, and the two sliders 20 are symmetrically slidably connected to the inner wall of the limiting groove 12, and the two sliders 20 are symmetrically threadedly connected to the outer wall of the double-headed screw rod 13, and the driving motor 14 is installed on one side of the mounting seat 11, and one end of the double-headed screw rod 13 is rotatably connected to one side of the inner wall of the limiting groove 12, and the other end of the double-headed screw rod 13 is fixedly connected to the driving motor 14, and the mounting seat 11 is installed on the upper surface of the base 66, and the double-headed screw rod 13 is driven to rotate by the driving motor 14, and the double-headed screw rod 13 drives the two sliders 20 through the thread, and the slider 20 drives the positioning arm 15, so that the two positioning arms 15 can be brought close to each other, and the positioning arm 15 drives the positioning jaws 16 to fit with the outer wall of the vacuum arc extinguishing chamber 68, thereby limiting the position of the vacuum arc extinguishing chamber 68, and through this driving mode, the two positioning jaws 16 can clamp the vacuum arc extinguishing chamber 68 of different sizes or specifications, thereby enhancing the applicability;

[0049] The positioning arm 15 is fixedly connected to the front surface of the slider 20, and the four positioning rods 19 are symmetrically slidably connected to the inside of the positioning arm 15. One end of the four positioning rods 19 is fixedly connected to the positioning clamping claw 16, and the positioning tension spring 18 is sleeved on the outer wall of the positioning rod 19. The vacuum arc extinguishing chamber 68 is located between the two positioning clamping claws 16 and fits with the positioning ball 17. One end of the positioning tension spring 18 is fixedly connected to the positioning arm 15, and the other end of the positioning tension spring 18 is fixedly connected to the end of the positioning rod 19. When the positioning clamping claw 16 contacts the outer wall of the vacuum arc extinguishing chamber 68, the positioning clamping claw 16 slides inside the positioning arm 15 through the positioning rod 19, and the positioning tension spring 18 is stretched. At this time, under the pulling of the positioning tension spring 18, the two positioning clamping claws 16 remain in contact with the vacuum arc extinguishing chamber 68. In addition, since the positioning tension spring 18 is provided, the vacuum arc extinguishing chamber 68 can be prevented from being damaged by clamping;

[0050] The positioning balls 17 are evenly mounted on the inner side walls of the positioning jaws 16 . The radial position of the vacuum interrupter 68 can be limited by the two positioning jaws 16 , while the axial displacement of the vacuum interrupter 68 is not hindered by the positioning balls 17 .

[0051] In one embodiment, an adjustment component 301 is further installed on the upper surface of the base 66, and the adjustment component 301 is used to adjust the position of the magnetic control coil 33. When the vacuum degree of the vacuum interrupter 68 is detected, the magnetic control coil 33 needs to be adjusted to a position corresponding to the moving contact in the vacuum interrupter 68;

[0052] The adjustment assembly 301 includes a fixed seat 31, a rack 32, a magnetic control coil 33, a mounting plate 34, a sliding seat 35, four sliding rods 36, a locking spring 37, a toothed plate 38, a handle 39, a connecting rod 40 and a mounting slot 41;

[0053] The magnetron coil 33 is mounted on the upper surface of the mounting plate 34, the mounting plate 34 is fixedly connected to one side of the sliding seat 35, the sliding seat 35 is slidably connected to the inside of the fixed seat 31, the rack 32 is fixedly connected to the inner front wall of the fixed seat 31, the mounting groove 41 is opened on the front surface of the sliding seat 35, four sliding rods 36 are symmetrically fixedly connected to the rear surface of the toothed plate 38, the locking spring 37 is sleeved on the outside of the sliding rod 36, the front surface of the toothed plate 38 is meshedly connected to the rear surface of the rack 32, the handle 39 is fixedly connected to the toothed plate 38 through the connecting rod 40, when adjusting the position of the magnetron coil 33, the toothed plate 38 is pushed by the handle 39 to separate the toothed plate 38 from the rack 32, and then the handle 39 is pulled, the sliding seat 35 slides in the fixed seat 31, the sliding seat 35 drives the mounting plate 34, and the mounting plate 34 drives the magnetron coil 33, and then the position of the magnetron coil 33 can be adjusted at this time, and the magnetron coil 33 is moved to the position corresponding to the moving contact in the vacuum arc extinguishing chamber 68;

[0054] By adjusting the position of the magnetron coil 33 in this way, it can be adjusted according to the use requirements to be suitable for vacuum degree detection of vacuum interrupter chambers 68 of different sizes.

[0055] In one embodiment, the sliding rod 36 is slidably connected to the inside of the sliding seat 35, one end of the locking spring 37 presses against the tooth plate 38, and the other end of the locking spring 37 presses against the inner rear wall of the mounting groove 41. The tooth plate 38 is slidably connected to the inside of the mounting groove 41, and the tooth plate 38 is pushed by the locking spring 37. The tooth plate 38 can engage with the rack 32. Since the position of the rack 32 is fixed, the position of the sliding seat 35 can be limited, thereby fixing the position of the magnetic control coil 33.

[0056] In one embodiment, a clamping assembly 601 is disposed above the vacuum interrupter 68, and the clamping assembly 601 includes a limit cylinder 60, a top plate 61, two guide rods 62, a clamping plate 63 and an upper contact 64;

[0057] The top plate 61 is installed on the upper surface of the mounting seat 11, the limiting cylinder 60 is installed on the upper surface of the top plate 61, the pressure plate 63 is fixedly connected to the cylinder shaft of the limiting cylinder 60, the bottom ends of the two guide rods 62 are symmetrically fixedly connected to the upper surface of the pressure plate 63, the guide rods 62 are slidably connected to the inside of the top plate 61, and the upper contact 64 is installed on the lower surface of the pressure plate 63. The upper contact 64 is fitted with the moving contact of the vacuum arc chamber 68. The limiting cylinder 60 pushes the top plate 61, and the top plate 61 drives the upper contact 64 to move downward, so that the upper contact 64 can fit with the top of the vacuum arc chamber 68, that is, the conduction between the upper contact 64 and the moving contact of the vacuum arc chamber 68 is completed.

[0058] In one embodiment, a buffer assembly 501 is installed inside the base 66, and the buffer assembly 501 includes a buffer plate 51, a lower contact 52, a support spring 53 and four support rods 54;

[0059] A groove 67 is provided on the upper surface of the base 66, and the bottom ends of the four support rods 54 are symmetrically fixedly connected to the inner bottom wall of the groove 67. The buffer plate 51 is slidably connected to the outer wall of the support rod 54, and the lower contact 52 is installed on the upper surface of the buffer plate 51. The support spring 53 is sleeved on the outer wall of the support rod 54, and the buffer plate 51 is slidably connected to the inner wall of the groove 67. One end of the support spring 53 supports the buffer plate 51, and the other end of the support spring 53 supports the inner bottom wall of the groove 67. When the clamping assembly 601 clamps and positions the vacuum arc chamber 68, the vacuum arc chamber 68 fits with the lower contact 52, and the buffer plate 51 moves downward, and the support spring 53 is compressed. At this time, under the reaction force of the support spring 53, the vacuum arc chamber 68 is tightly fitted with the lower contact 52 and the upper contact 64 and is conductive.

[0060] In one embodiment, a pressure sensor is provided below the buffer plate 51, and the pressure on the buffer plate 51 can be monitored by the pressure sensor. When the pressure exceeds the rated value, a signal is sent to the control system to stop the limit cylinder 60 from working, which specifically includes the following process;

[0061] Initialization: After the system is powered on, the control system automatically initializes, checks the status of each sensor and the limit cylinder 60, and ensures that the system is in standby mode;

[0062] Monitoring and judgment: The pressure sensor continuously monitors the pressure change of the buffer plate 51 and transmits the data to the control system in real time. The control system judges whether the current pressure exceeds the standard according to the preset pressure threshold;

[0063] Response and action: If the pressure exceeds the rated value, the control system immediately sends a control signal, which stops the limit cylinder 60 from working.

[0064] In one embodiment, the lower contact 52 is fitted with the static contact of the vacuum interrupter 68, a vacuum detector 65 is installed on the upper surface of the mounting seat 11, the vacuum detector 65 is connected to the magnetron coil 33 through two magnetic field voltage lines, the ion current line of the vacuum detector 65 is electrically connected to the upper contact 64, the high-voltage output line of the vacuum detector 65 is electrically connected to the upper contact 64, the magnetron coil 33 is located on one side of the vacuum interrupter 68, and the vacuum detector 65 includes the following steps when detecting the vacuum degree of the vacuum interrupter 68:

[0065] Applying electric and magnetic fields: A large current is passed through the magnetron coil 33, thereby generating a pulse magnetic field synchronized with the high voltage in the vacuum interrupter 68, and applying a high voltage pulse between the two contacts to form a high voltage electric field;

[0066] Electron movement and ionization: Under the combined effect of pulsed strong magnetic field and strong electric field, the electrons in the vacuum bubble will do spiral motion, and the electrons will collide with the residual gas molecules, thus producing ionization phenomenon;

[0067] Current measurement and calculation: The tester can measure three current values: leakage current, total current and ion current. The leakage current value is subtracted from the total current to obtain the ion current value reflecting the vacuum degree of the vacuum bubble. The vacuum degree of the vacuum interrupter 68 can be calculated through the corresponding relationship curve between the vacuum degree and the ion current calibrated by the experiment.

[0068] A method for detecting an arc extinguishing chamber comprises the following steps:

[0069] Step 1: Place the vacuum interrupter on the surface of the buffer plate, and fit the static contact of the vacuum interrupter with the lower contact on the surface of the buffer plate;

[0070] Step 2: The two positioning jaws are brought close to each other to position the vacuum interrupter, and the positioning jaws are fitted to the outer wall of the vacuum interrupter through the positioning balls;

[0071] Step 3: The limit cylinder pushes the pressure plate downward, and the pressure plate drives the upper contact to contact the moving contact of the vacuum interrupter. The pressure plate generates pressure on the vacuum interrupter, and the buffer plate moves downward. The support spring pushes the buffer plate in the opposite direction, and the two contacts of the vacuum interrupter contact the upper contact and the lower contact respectively, and the position of the vacuum interrupter is fixed.

[0072] Step 4: Use the handle to adjust the position of the sliding seat, and the sliding seat drives the magnetic control coil to move the magnetic control coil to a position close to the moving contact of the vacuum interrupter;

[0073] Step 5: Start the vacuum degree detector, pass a large current through the magnetron coil, generate a pulse magnetic field synchronized with the high voltage in the vacuum interrupter, apply a high voltage pulse between the two contacts of the vacuum interrupter, and form a high voltage electric field;

[0074] Step 6: The vacuum detector measures the three current values ​​of leakage current, total current and ion current, and calculates the vacuum degree of the arc extinguishing chamber.

[0075] When the present invention is working: the vacuum interrupter 68 is placed on the surface of the buffer plate 51, so that the static contact of the vacuum interrupter 68 is in contact with the lower contact 52 on the surface of the buffer plate 51, and the double-headed screw 13 is driven to rotate by the driving motor 14, and the double-headed screw 13 drives the two sliders 20 through the thread, and the slider 20 drives the positioning arm 15, so that the two positioning arms 15 can be brought close to each other, and the positioning arm 15 drives the positioning jaws 16 to fit with the outer wall of the vacuum interrupter 68, thereby limiting the position of the vacuum interrupter 68. At this time, under the pull of the positioning tension spring 18, the two positioning jaws 16 remain in contact with the vacuum interrupter 68;

[0076] Then, the top plate 61 is pushed by the limiting cylinder 60, and the top plate 61 drives the upper contact 64 to move downward, so that the upper contact 64 can fit with the top of the vacuum interrupter 68, that is, the upper contact 64 and the moving contact of the vacuum interrupter 68 are connected;

[0077] When the pressing assembly 601 presses and positions the vacuum interrupter 68, the vacuum interrupter 68 fits with the lower contact 52, and the buffer plate 51 moves downward, and the support spring 53 is compressed. At this time, under the reaction force of the support spring 53, the vacuum interrupter 68 fits tightly with the lower contact 52 and the upper contact 64 and conducts;

[0078] The tooth plate 38 is pushed by the handle 39 to separate the tooth plate 38 from the rack 32, and then the handle 39 is pulled, the sliding seat 35 slides in the fixed seat 31, the sliding seat 35 drives the mounting plate 34, and the mounting plate 34 drives the magnetron coil 33, and then the position of the magnetron coil 33 can be adjusted at this time, and the magnetron coil 33 is moved to a position corresponding to the moving contact in the vacuum interrupter 68, and the tooth plate 38 is pushed by the locking spring 37, and the tooth plate 38 can be meshed with the rack 32, so that the position of the magnetron coil 33 is fixed;

[0079] At this time, the vacuum degree of the vacuum interrupter 68 can be detected by the vacuum degree detector 65 .

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An arc extinguishing chamber detection device, comprising a base (66), characterized in that: A flexible positioning component (101) is installed on the upper surface of the base (66), and a vacuum arc extinguishing chamber (68) is arranged inside the flexible positioning component (101); The flexible positioning component (101) comprises a mounting seat (11), a limiting groove (12), a double-headed screw (13), a driving motor (14), a positioning arm (15), two positioning claws (16), a positioning ball (17), a positioning tension spring (18), four positioning rods (19) and two sliders (20); The limiting groove (12) is opened inside the mounting seat (11), the two sliders (20) are symmetrically slidably connected to the inner wall of the limiting groove (12), the two sliders (20) are symmetrically threadedly connected to the outer wall of the double-headed screw (13), the driving motor (14) is installed on one side of the mounting seat (11), the positioning arm (15) is fixedly connected to the front surface of the slider (20), the four positioning rods (19) are symmetrically slidably connected to the inside of the positioning arm (15), one end of the four positioning rods (19) is fixedly connected to the positioning clamp (16), the positioning tension spring (18) is sleeved on the outer wall of the positioning rod (19), and the positioning ball (17) is evenly installed on the inner wall of the positioning clamp (16).

2. The arc extinguishing chamber detection device according to claim 1, characterized in that: One end of the double-ended screw rod (13) is rotatably connected to one side of the inner wall of the limiting groove (12), the other end of the double-ended screw rod (13) is fixedly connected to the driving motor (14), and the mounting seat (11) is mounted on the upper surface of the base (66).

3. The arc extinguishing chamber detection device according to claim 2, characterized in that: The vacuum arc extinguishing chamber (68) is located between the two positioning jaws (16) and is in contact with the positioning ball (17); one end of the positioning tension spring (18) is fixedly connected to the positioning arm (15); and the other end of the positioning tension spring (18) is fixedly connected to the end of the positioning rod (19).

4. The arc extinguishing chamber detection device according to claim 1, characterized in that: An adjustment assembly (301) is also installed on the upper surface of the base (66), and the adjustment assembly (301) includes a fixed seat (31), a rack (32), a magnetic control coil (33), a mounting plate (34), a sliding seat (35), four sliding rods (36), a locking spring (37), a toothed plate (38), a handle (39), a connecting rod (40) and a mounting groove (41); The magnetic control coil (33) is installed on the upper surface of the mounting plate (34), the mounting plate (34) is fixedly connected to one side of the sliding seat (35), the sliding seat (35) is slidably connected to the inside of the fixed seat (31), the rack (32) is fixedly connected to the inner front wall of the fixed seat (31), the mounting groove (41) is opened on the front surface of the sliding seat (35), the four sliding rods (36) are symmetrically fixedly connected to the rear surface of the tooth plate (38), the locking spring (37) is sleeved on the outside of the sliding rod (36), the front surface of the tooth plate (38) is meshedly connected to the rear surface of the rack (32), and the handle (39) is fixedly connected to the tooth plate (38) through a connecting rod (40).

5. The arc extinguishing chamber detection device according to claim 4, characterized in that: The sliding rod (36) is slidably connected to the inside of the sliding seat (35), one end of the locking spring (37) presses against the tooth plate (38), the other end of the locking spring (37) presses against the inner rear wall of the mounting groove (41), and the tooth plate (38) is slidably connected to the inside of the mounting groove (41).

6. The arc extinguishing chamber detection device according to claim 1, characterized in that: A clamping assembly (601) is arranged above the vacuum interrupter (68), and the clamping assembly (601) comprises a limit cylinder (60), a top plate (61), two guide rods (62), a clamping plate (63) and an upper contact (64); The top plate (61) is installed on the upper surface of the mounting seat (11), the limiting cylinder (60) is installed on the upper surface of the top plate (61), the pressure plate (63) is fixedly connected to the cylinder shaft of the limiting cylinder (60), the bottom ends of the two guide rods (62) are symmetrically fixedly connected to the upper surface of the pressure plate (63), the guide rods (62) are slidably connected to the inside of the top plate (61), the upper contact (64) is installed on the lower surface of the pressure plate (63), and the upper contact (64) is in contact with the moving contact of the vacuum arc extinguishing chamber (68).

7. The arc extinguishing chamber detection device according to claim 1, characterized in that: A buffer assembly (501) is installed inside the base (66), and the buffer assembly (501) includes a buffer plate (51), a lower contact point (52), a support spring (53) and four support rods (54); The upper surface of the base (66) is provided with a groove (67), the bottom ends of the four support rods (54) are symmetrically fixedly connected to the inner bottom wall of the groove (67), the buffer plate (51) is slidably connected to the outer side wall of the support rod (54), the lower contact (52) is installed on the upper surface of the buffer plate (51), the support spring (53) is sleeved on the outer side wall of the support rod (54), the buffer plate (51) is slidably connected to the inner side wall of the groove (67), one end of the support spring (53) supports the buffer plate (51), and the other end of the support spring (53) supports the inner bottom wall of the groove (67).

8. The arc extinguishing chamber detection device according to claim 7, characterized in that: The lower contact (52) is fitted with the static contact of the vacuum interrupter (68); a vacuum detector (65) is installed on the upper surface of the mounting seat (11); the vacuum detector (65) is connected to the magnetron coil (33) via two magnetic field voltage lines; the ion current line of the vacuum detector (65) is electrically connected to the upper contact (64); and the high-voltage output line of the vacuum detector (65) is electrically connected to the upper contact (64).

9. The arc extinguishing chamber detection device according to claim 8, characterized in that: The magnetic control coil (33) is located on one side of the vacuum interrupter (68).

10. An arc extinguishing chamber detection method, applied to an arc extinguishing chamber detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the vacuum interrupter on the surface of the buffer plate, and fit the static contact of the vacuum interrupter with the lower contact on the surface of the buffer plate; Step 2: The two positioning jaws are brought close to each other to position the vacuum interrupter, and the positioning jaws are fitted to the outer wall of the vacuum interrupter through the positioning balls; Step 3: The limit cylinder pushes the pressure plate downward, and the pressure plate drives the upper contact to contact the moving contact of the vacuum interrupter. The pressure plate generates pressure on the vacuum interrupter, and the buffer plate moves downward. The support spring pushes the buffer plate in the opposite direction, and the two contacts of the vacuum interrupter contact the upper contact and the lower contact respectively, and the position of the vacuum interrupter is fixed. Step 4: Use the handle to adjust the position of the sliding seat, and the sliding seat drives the magnetic control coil to move the magnetic control coil to a position close to the moving contact of the vacuum interrupter; Step 5: Start the vacuum degree detector, pass a large current through the magnetron coil, generate a pulse magnetic field synchronized with the high voltage in the vacuum interrupter, apply a high voltage pulse between the two contacts of the vacuum interrupter, and form a high voltage electric field; Step 6: The vacuum detector measures the three current values ​​of leakage current, total current and ion current, and calculates the vacuum degree of the arc extinguishing chamber.

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