Closed circular ceramic high-voltage direct-current magnetic quenching chamber

Abstract

The invention discloses a closed circular ceramic high-voltage direct-current magnetic quenching chamber, and relates to the technical field of trigger arc extinguishing, and the closed circular ceramic high-voltage direct-current magnetic quenching chamber comprises an arc extinguishing unit which comprises a mounting assembly arranged in a bottom shell and an arc extinguishing assembly arranged at the other end of the mounting assembly. According to the ceramic closed cavity structure of the high-voltage direct-current arc extinguishing cavity, heat resistance and reliability can be improved, the performance in a high-temperature environment is enhanced, the structural strength is enhanced through the design of the magnetic steel, the electrodes are effectively protected against electric arc damage, the cavity temperature is effectively controlled, material degradation is prevented, the arc extinguishing effect is improved through the built-in magnetic steel assembly and the built-in arc extinguishing assembly, and the service life of the high-voltage direct-current arc extinguishing cavity is prolonged. And through the design of the single-side auxiliary electrode and the mounting assembly, the assembly efficiency is improved, the service life of the product is prolonged, the influence of electric arc on the electrode is reduced, the safety is improved, the breakdown and explosion risks are reduced, and the normal work of the high-voltage relay is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of trigger arc extinguishing, in particular to a closed circular ceramic high-voltage direct current magnetic blowout arc extinguishing chamber. Background Art

[0002] The high-voltage DC magnetic blow-out arc extinguishing chamber uses the force of the magnetic field on the current to extinguish the arc. It is also called magnetic blow-out arc extinguishing. When a large electric force needs to be extinguished, the arc is blown into the arc extinguishing chamber, and a special magnetic blow-out coil is used to establish a strong enough magnetic field to blow out the arc entering the arc extinguishing chamber.

[0003] At present, the existing high-voltage contactor magnetic arc extinguishing generally adopts PA66 nylon arc extinguishing cavity. This cavity is prone to heat accumulation, ablation and carbonization under the action of high-temperature arc, which may eventually lead to burn-through and short circuit, affecting the performance of the contactor. In addition, the existing cavity epoxy sealing layer is prone to fission under frequent use and temperature shock, resulting in leakage of protective gas, causing contact adhesion and breakdown and explosion of the product cavity. At the same time, if the arc is not handled properly, it will also cause contact adhesion, reducing the working stability and reliability of the high-voltage relay, and posing a major safety hazard. Summary of the invention

[0004] In view of the above problems existing in the existing closed circular ceramic high voltage DC magnetic blowout arc extinguishing chamber, the present invention is proposed.

[0005] Therefore, the present invention provides a closed circular ceramic high-voltage DC magnetic blow-out arc extinguishing chamber, the purpose of which is to solve the problem that the existing arc extinguishing cavity is prone to heat accumulation, ablation and carbonization under the action of high-temperature electric arc, which may cause burn-through and short circuit, affecting the performance of the contactor, and is prone to fission under frequent use of arc extinguishing and temperature shock, resulting in leakage of protective gas, causing contact adhesion and breakdown and explosion of the product cavity, reducing the working stability and reliability of the high-voltage relay, and posing a major safety hazard.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a connecting unit comprises a bottom shell and a connecting assembly arranged at the other end of the bottom shell; The arc extinguishing unit includes a mounting assembly arranged inside the bottom shell, an arc extinguishing assembly arranged at the other end of the mounting assembly, and a magnetic steel assembly arranged on the arc extinguishing assembly, and the magnetic steel assembly is connected to the arc extinguishing assembly and the magnetic steel assembly.

[0007] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber described in the present invention, the connecting assembly includes a connecting shell arranged on the bottom shell, an adjusting part arranged on the connecting shell, a connecting part arranged on the connecting shell, and a contact rod arranged on the connecting shell, and the contact rod is connected to the arc extinguishing assembly and the magnetic steel assembly.

[0008] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention, a guide groove is arranged inside the connecting shell, and the guide groove is connected to the magnetic steel assembly.

[0009] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber described in the present invention, the installation assembly includes a clamping ring arranged inside the bottom shell, a limiting ring slidably arranged inside the clamping ring, a connecting clamp slidably arranged inside the limiting ring, and a fixing ring arranged on the outer diameter of the clamping ring, and the fixing ring is connected to the bottom shell.

[0010] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber described in the present invention, the arc extinguishing assembly includes a moving rod rotatably arranged inside the connecting sleeve, a buffer spring arranged on the outer diameter of the moving rod, a base arranged at the other end of the moving rod, and a detection member arranged at the other end of the base.

[0011] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber described in the present invention, the detection component includes a base 2 arranged at the other end of the base 1, a reset spring 2 arranged on one side of the base 2, a detection plate arranged at the other end of the reset spring 2, and a bracket arranged on the detection plate, and the bracket is connected to the base 2.

[0012] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention, a detection shell is arranged on one side of the bracket, a contact piece 1 is arranged on the detection shell, and the contact piece 1 cooperates with the contact rod.

[0013] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention, a detection block is arranged inside the detection shell, and the detection block is connected to the connection shell.

[0014] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber described in the present invention, the magnetic steel assembly includes a connecting ring arranged on one side of the clamping ring, a magnetic steel body arranged inside the connecting ring, and a guide member arranged at the bottom of the connecting ring, and the guide member is connected to the guide groove.

[0015] As a preferred solution of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention, a second contact piece is arranged inside the guide member, and the second contact piece is connected to the guide groove.

[0016] The beneficial effects of the present invention are as follows: the ceramic closed cavity structure of the high-voltage DC arc extinguishing cavity can improve heat resistance and reliability. By using ceramic materials instead of easily ablative nylon, the performance in high temperature environments is enhanced. The structural strength is enhanced through the design of the magnetic steel, which effectively protects the electrodes from arc damage, effectively controls the cavity temperature, and prevents material degradation. The built-in magnetic steel assembly and arc extinguishing assembly improve the arc extinguishing effect and reduce adhesion and damage between the contact piece and the connecting rod. The design of the single-sided auxiliary electrode and mounting assembly improves assembly efficiency, extends product life, reduces the impact of the arc on the electrode, improves safety, reduces the risk of breakdown and explosion, and ensures the normal operation of the high-voltage relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the closed circular ceramic high voltage DC magnetic blow-out arc chamber of the present invention.

[0020] Figure 3 The invention provides a closed circular ceramic high voltage DC magnetic blowout arc chamber. Figure 2 An enlarged schematic diagram of point A.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention.

[0022] Figure 5 The invention provides a closed circular ceramic high voltage DC magnetic blowout arc chamber. Figure 4 An enlarged schematic diagram of point B.

[0023] Figure 6 It is a schematic diagram of the explosion structure of the closed circular ceramic high voltage DC magnetic blow-out arc chamber of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the magnetic steel component of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of the installation assembly of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention.

[0026] Fig. 9It is a schematic diagram of the explosion cross-section structure of the closed circular ceramic high-voltage DC magnetic blow-out arc chamber of the present invention.

[0027] Fig.10 It is a schematic diagram of the structure of the arc extinguishing component of the closed circular ceramic high-voltage DC magnetic blow-out arc extinguishing chamber of the present invention.

[0028] Explanation of the accompanying drawings: 1. connecting unit; 11. bottom shell; 12. connecting assembly; 121. connecting shell; 122. contact rod; 123. connecting piece; 124. adjusting piece; 125. guide groove; 2. arc extinguishing unit; 21. mounting assembly; 211. clamping ring; 212. limiting ring; 213. connecting clamp; 214. fixing ring; 22. arc extinguishing assembly; 221. moving rod; 222. buffer spring one; 223. base one; 224. detection piece; 2241. base two; 2242. reset spring two; 2243. detection plate; 2244. bracket; 2245. detection shell; 2247. detection block; 2246. contact piece one; 23. magnetic steel assembly; 231. connecting ring; 232. magnetic steel body; 233. guide piece; 234. contact piece two. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1 - Figure 5 , which is the first embodiment of the present invention, provides a closed circular ceramic high-voltage DC magnetic blowout arc extinguishing chamber, and the device includes: a connecting unit 1 and an arc extinguishing unit 2.

[0031] The connection unit 1 includes a bottom shell 11 and a connection assembly 12 disposed at the other end of the bottom shell 11. Before arc extinguishing, the connection assembly 12 needs to be connected to the high-voltage trigger, and the bottom shell 11 is used to connect and support the connection assembly 12 as a whole to ensure that the connection assembly 12 can be stably connected to the high-voltage trigger. The arc extinguishing unit 2 includes a mounting assembly 21 arranged inside the bottom shell 11, an arc extinguishing assembly 22 arranged at the other end of the mounting assembly 21, and a magnetic steel assembly 23 arranged on the arc extinguishing assembly 22, and the magnetic steel assembly 23 is connected with the arc extinguishing assembly 22 and the magnetic steel assembly 23. After the connection is completed through the connecting assembly 12, the mounting assembly 21 inside the bottom shell 11 is installed, so that the mounting assembly 21, the arc extinguishing assembly 22 and the magnetic steel assembly 23 are all installed to form a whole. In the process of arc extinguishing, because the connecting assembly 12 is connected to the high-voltage trigger, a voltage begins to be generated inside. In the connection process, the magnetic steel assembly 23 is energized to generate a longitudinal thrust, which pushes the contact piece 234 to fit with the contact rod 122 to achieve circuit connection. At the same time, the contact piece 1 2246 is pushed up by the detection plate 2243 to fit with the other contact rod 122, leading out the arc extinguishing assembly 22 The connection shell 121 is fitted to achieve monitoring. When the circuit is connected and current passes through, an arc is formed on the contact rod 122. The arc is stretched and cooled under the action of the magnetic field generated by the magnetic steel component 23, and the arc extinguishing effect is achieved by the magnetic blow-out principle. During the disconnection process, the arc extinguishing component 22 is powered off or the arc extinguishing component 22 is reversely energized, and the contact piece 234 is separated from the contact rod 122, the circuit is disconnected, and an arc is generated again and extinguished by the magnetic blow-out principle to prevent contact adhesion and damage. During the entire process, the bottom shell 11 of the ceramic material provides insulation and heat-resistant protection, and the signal transmission function of the arc extinguishing component 22 realizes real-time monitoring of the working status of the contactor, thereby improving the safety and reliability of the system. This process not only ensures that the contactor can effectively control the arc, but also improves the advantages of the ceramic closed cavity structure in improving the performance and safety of the contactor, making it more stable and durable in high-voltage and high-current environments.

[0032] During use, before extinguishing the arc, the connecting component 12 needs to be connected to the high-voltage trigger, and the connecting component 12 is connected and supported as a whole through the bottom shell 11 to ensure that the connecting component 12 can be stably connected to the high-voltage trigger. After the connection is completed through the connecting component 12, the installation component 21 inside the bottom shell 11 is installed, so that the installation component 21, the arc extinguishing component 22 and the magnetic steel component 23 are all installed to form a whole. In the process of extinguishing the arc, because the connecting component 12 is connected to the high-voltage trigger, a voltage begins to be generated inside. During the connection process, the magnetic steel component 23 is energized to generate a longitudinal thrust, which pushes the contact piece 234 to fit with the contact rod 122 to connect the circuit. At the same time, the contact piece 1 2246 is pushed up by the detection plate 2243 to fit with the other contact rod 122, leading the arc extinguishing component 22 to fit the connecting shell 1 21. To achieve monitoring, when the circuit is connected and current flows through, an arc is formed on the contact rod 122. The arc is stretched and cooled under the action of the magnetic field generated by the magnetic steel component 23, and the arc extinguishing effect is achieved by the magnetic blow-out principle. During the disconnection process, the arc extinguishing component 22 is powered off or the arc extinguishing component 22 is reversely energized, and the contact piece 234 is separated from the contact rod 122, the circuit is disconnected, and an arc is generated again and extinguished by the magnetic blow-out principle to prevent contact adhesion and damage. In the whole process, the bottom shell 11 of the ceramic material provides insulation and heat-resistant protection, and the signal transmission function of the arc extinguishing component 22 realizes real-time monitoring of the working status of the contactor, thereby improving the safety and reliability of the system. This process not only ensures that the contactor can effectively control the arc, but also improves the advantages of the ceramic closed cavity structure in improving the performance and safety of the contactor, making it more stable and durable in high-voltage and high-current environments.

[0033] Example 2, reference Figure 1 - Figure 8 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a connecting component 12 includes a connecting shell 121 arranged on the bottom shell 11, an adjusting member 124 arranged on the connecting shell 121, a connecting member 123 arranged on the connecting shell 121, and a contact rod 122 arranged on the connecting shell 121, and the contact rod 122 is connected to the arc extinguishing component 22 and the magnetic steel component 23. A guide groove 125 is arranged inside the connecting shell 121, and the guide groove 125 is connected to the magnetic steel component 23. When the high-voltage contactor is subjected to arc extinguishing treatment, the connecting member 123 on the connecting component 12 is connected to the high-voltage contactor, and the contact rod 122 is also connected to the high-voltage contactor. The adjusting member 124 monitors the high-voltage contactor in real time, and at the same time, the connection 123 can be directly inserted into the interior of the high-voltage contactor for connection, so that quick connection and installation can be completed, saving the installation time of the operator.

[0034] Compared with Example 1, further, the installation component 21 includes a clamping ring 211 arranged inside the bottom shell 11, a limiting ring 212 slidably arranged inside the clamping ring 211, a connecting clamp 213 slidably arranged inside the limiting ring 212, and a fixing ring 214 arranged on the outer diameter of the clamping ring 211, and the fixing ring 214 is connected to the bottom shell 11. After the connecting piece 123 is inserted into the high-voltage contactor, the contact rod 122 is also connected to the high-voltage contactor. By rotating the installation component 21 inside the bottom shell 11 and installing it on the outer wall of the connecting shell 121, when the mounting assembly 21 inside the bottom shell 11 is installed and aligned with the rotating clamping ring 211, the limiting ring 212 inside the clamping ring 211 and the limiting ring The connecting sleeve 213 inside 212 rotates at the same time, so that the limiting ring 212 inside the sleeve ring 211 and the connecting sleeve 213 inside the limiting ring 212 can be stably fixed on the outer diameter of the moving rod 221, and the sleeve ring 211 and the bottom shell 11 on the outer wall of the connecting shell 121 are also fixed to ensure the stability of the overall equipment of the connecting component 12 during connection and arc extinguishing operations, and the fixing ring 214 provides annular protection for the sleeve ring 211 to ensure the stability of the internal arc of the arc extinguishing component 22 during arc extinguishing operations, reduce the impact of the arc on the electrode, improve safety, reduce the risk of breakdown and explosion, and ensure the normal operation of the high-voltage relay.

[0035] During use, when the high-voltage contactor is subjected to arc extinguishing treatment, the connector 123 on the connecting assembly 12 is connected to the high-voltage contactor, the contact rod 122 is also connected to the high-voltage contactor, and the adjusting member 124 monitors the high-voltage contactor in real time. At the same time, the connector 123 can be directly inserted into the interior of the high-voltage contactor for connection, so that quick connection and installation can be completed, saving the installation time of the operator. After the connector 123 is inserted into the high-voltage contactor, the contact rod 122 is also connected to the high-voltage contactor, and the installation assembly 21 inside the bottom shell 11 is rotated and installed on the outer wall of the connecting shell 121. When the rotating clamp ring 211 is installed and aligned, the limit inside the clamp ring 211 The positioning ring 212 and the connecting sleeve 213 inside the limiting ring 212 rotate at the same time, so that the limiting ring 212 inside the sleeve ring 211 and the connecting sleeve 213 inside the limiting ring 212 can be stably fixed on the outer diameter of the moving rod 221, and the sleeve ring 211 and the bottom shell 11 on the outer wall of the connecting shell 121 are also fixed to ensure the overall stability of the connecting component 12 during connection and arc extinguishing operations, and the fixing ring 214 provides annular protection for the sleeve ring 211 to ensure the stability of the internal arc of the arc extinguishing component 22 during arc extinguishing operations, reduce the impact of the arc on the electrode, improve safety, reduce the risk of breakdown and explosion, and ensure the normal operation of the high-voltage relay.

[0036] The remaining structures are the same as those of Example 1.

[0037] Example 3, reference Figure 1 - Fig.10 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the arc extinguishing assembly 22 includes a moving rod 221 rotatably arranged inside the connecting sleeve 213, a buffer spring 222 arranged on the outer diameter of the moving rod 221, a base 223 arranged at the other end of the moving rod 221, and a detection member 224 arranged at the other end of the base 223, the detection member 224 includes a base 2241 arranged at the other end of the base 223, a reset spring 2242 arranged on one side of the base 2241, and a detection member 224 arranged at the other end of the base 223. A detection plate 2243 is arranged at the other end of the reset spring 2242, and a bracket 2244 is arranged on the detection plate 2243, and the bracket 2244 is connected to the base 2241, a detection shell 2245 is arranged on one side of the bracket 2244, a contact piece 2246 is arranged on the detection shell 2245, and the contact piece 2246 cooperates with the contact rod 122, and a detection block 2247 is arranged inside the detection shell 2245, and the detection block 2247 is connected to the connection shell 121. After the connection assembly 12 is connected to the high-voltage contactor, the bottom After the installation assembly 21 is installed, the high-voltage contactor starts to be energized. When the high-voltage contactor is energized to generate an arc, the reset spring 2242 is energized to generate a longitudinal thrust, pushing the contact piece 1 2246 on the top of the detection shell 2245 to fit with the contact rod 122, so that the circuit is connected. At the same time, the buffer spring 1 222 also starts to move, so that the connecting ring 231 also moves, so that the contact piece 234 on the connecting ring 231 fits with the contact rod 122 at the bottom, draws out current, and at the same time, the detection block 224 on the detection shell 2245 is 7 The connecting shell 121 is fitted, and the adjusting member 124 is used for detection and transmission to realize monitoring. When the circuit is connected and current flows, an arc is formed between the contact piece 1 2246 and the contact piece 2 234. The arc is quickly stretched under the action of the magnetic field generated by the magnetic steel body 232 inside the connecting ring 231. At the same time, the arc is cooled due to the stretching, thereby completing the arc extinguishing work. The arc extinguishing effect is achieved by using the arc extinguishing principle of magnetic blowing, so that the arc extinguishing work can be performed quickly and multiple times, thereby improving equipment efficiency, extending product life, reducing the impact of the arc on the electrode, and improving safety.

[0038] Compared with Example 2, further, the magnetic steel assembly 23 includes a connecting ring 231 arranged on one side of the ferrule ring 211, a magnetic steel body 232 arranged inside the connecting ring 231, and a guide piece 233 arranged at the bottom of the connecting ring 231, and the guide piece 233 is connected to the guide groove 125, and a contact piece 234 is arranged inside the guide piece 233, and the contact piece 234 is connected to the guide groove 125. In the detection shell 2245 and the detection block 2247, real-time current detection is performed on the high-voltage contactor. When an arc is generated in the high-voltage contactor, the arc is quickly stretched through the cooperation of the contact piece 1 2246 and the contact piece 234, and the stretched arc is magnetically blown out by the magnetic field generated by the two magnetic steel bodies 232 inside the connecting ring 231, and And during the disconnection process, the reset spring 2242 is de-energized or reversely energized, the contact piece 234 and the contact piece 1 2246 are separated from the contact rod 122 at the same time, the circuit is disconnected, the arc is generated again and it is extinguished by the magnetic arc extinguishing principle to prevent the contact rod 122 from sticking and being damaged. In the whole process, because the material bottom shell 11 and the connecting component 12 of the arc extinguishing chamber are made of ceramic materials, the internal insulation and heat-resistant protection can be guaranteed. The signal transmission function of the adjustment part 124 realizes real-time monitoring of the working status of the contactor, improves the safety and reliability of the system, not only can the contactor be detected in real time and the arc can be effectively controlled, but also reflects the key role of the ceramic closed cavity structure in improving the performance and safety of the contactor, making it more stable and durable under high voltage and high current environments.

[0039] During use, after the connection component 12 is connected to the high-voltage contactor, the installation component 21 is installed at the bottom at the same time, and the high-voltage contactor starts to be energized. When the high-voltage contactor is energized to generate an arc, the reset spring 2242 is energized to generate a longitudinal thrust, which pushes the contact piece 1 2246 on the top of the detection shell 2245 to fit with the contact rod 122, so that the circuit is connected. At the same time, the buffer spring 1 222 also starts to move, so that the connecting ring 231 also moves, so that the contact piece 234 on the connecting ring 231 fits with the contact rod 122 at the bottom, draws out current, and makes the detection The detection block 2247 on the shell 2245 fits the connecting shell 121, and the adjustment part 124 performs detection and transmission to realize monitoring. When the circuit is connected and current passes through, an arc is formed between the contact piece 1 2246 and the contact piece 2 234. The arc is quickly stretched under the action of the magnetic field generated by the magnetic steel body 232 inside the connecting ring 231. At the same time, the arc is cooled due to the stretching, thereby completing the arc extinguishing work. The arc extinguishing effect is achieved by utilizing the arc extinguishing principle of magnetic blowing, so that the arc extinguishing work can be performed quickly and multiple times, thereby improving equipment efficiency, extending product life, reducing the impact of the arc on the electrode, and improving safety.

[0040] In the detection shell 2245 and the detection block 2247, the high-voltage contactor is tested for current in real time. When an arc is generated in the high-voltage contactor, the arc is stretched quickly through the cooperation of the contact piece 1 2246 and the contact piece 2 234. At the same time, the stretched arc is magnetically blown out by the magnetic field generated by the two magnetic steel bodies 232 inside the connecting ring 231. In the disconnection process, the reset spring 2242 is powered off or reversely powered, and the contact piece 2 234 and the contact piece 1 2246 are separated from the contact rod 122 at the same time, the circuit is disconnected, and an arc is generated again and the arc is extinguished by the magnetic blow. The arc extinguishing principle extinguishes the arc and prevents the contact rod 122 from sticking and being damaged. In the whole process, because the bottom shell 11 and the connecting component 12 of the arc extinguishing chamber are made of ceramic materials, the internal insulation and heat-resistant protection can be guaranteed. The signal transmission function of the adjustment part 124 realizes the real-time monitoring of the working status of the contactor and improves the safety and reliability of the system. It can not only detect the contactor in real time and effectively control the arc, but also reflects the key role of the ceramic closed cavity structure in improving the performance and safety of the contactor, making it more stable and durable in high-voltage and high-current environments.

[0041] The remaining structure is the same as that of Example 2.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A closed circular ceramic high voltage DC magnetic blowout arc chamber, characterized in that: include: A connecting unit (1) comprising a bottom shell (11) and a connecting assembly (12) arranged at the other end of the bottom shell (11); The arc extinguishing unit (2) comprises a mounting assembly (21) arranged inside the bottom shell (11), an arc extinguishing assembly (22) arranged at the other end of the mounting assembly (21), and a magnetic steel assembly (23) arranged on the arc extinguishing assembly (22), wherein the magnetic steel assembly (23) is connected to the arc extinguishing assembly (22) and the magnetic steel assembly (23).

2. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 1, characterized in that: The connection assembly (12) comprises a connection shell (121) arranged on the bottom shell (11), an adjustment member (124) arranged on the connection shell (121), a connection member (123) arranged on the connection shell (121), and a contact rod (122) arranged on the connection shell (121), wherein the contact rod (122) is connected to the arc extinguishing assembly (22) and the magnetic steel assembly (23).

3. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 2, characterized in that: A guide groove (125) is provided inside the connection shell (121), and the guide groove (125) is connected to the magnetic steel component (23).

4. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 3 is characterized in that: The mounting assembly (21) comprises a ferrule ring (211) arranged inside the bottom shell (11), a limit ring (212) slidably arranged inside the ferrule ring (211), a connecting ferrule (213) slidably arranged inside the limit ring (212), and a fixing ring (214) arranged on the outer diameter of the ferrule ring (211), wherein the fixing ring (214) is connected to the bottom shell (11).

5. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 4, characterized in that: The arc extinguishing assembly (22) comprises a moving rod (221) rotatably arranged inside the connecting sleeve (213), a buffer spring (222) arranged on the outer diameter of the moving rod (221), a base (223) arranged at the other end of the moving rod (221), and a detection member (224) arranged at the other end of the base (223).

6. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 5, characterized in that: The detection member (224) comprises a second base (2241) arranged at the other end of the first base (223), a second return spring (2242) arranged at one side of the second base (2241), a detection plate (2243) arranged at the other end of the second return spring (2242), and a bracket (2244) arranged on the detection plate (2243), and the bracket (2244) is connected to the second base (2241).

7. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 6, characterized in that: A detection shell (2245) is provided on one side of the card frame (2244), a contact piece 1 (2246) is provided on the detection shell (2245), and the contact piece 1 (2246) cooperates with the contact rod (122).

8. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 7, characterized in that: A detection block (2247) is disposed inside the detection shell (2245), and the detection block (2247) is connected to the connection shell (121).

9. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 8, characterized in that: The magnetic steel assembly (23) comprises a connecting ring (231) arranged on one side of the ferrule ring (211), a magnetic steel body (232) arranged inside the connecting ring (231), and a flow guide (233) arranged at the bottom of the connecting ring (231), wherein the flow guide (233) is connected to the flow guide groove (125).

10. The closed circular ceramic high voltage DC magnetic blowout arc chamber according to claim 9, characterized in that: A second contact piece (234) is provided inside the flow guide member (233), and the second contact piece (234) is connected to the flow guide groove (125).

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