CN111863515B

CN111863515B - Vacuum contactor's explosion chamber contact piece emergency treatment device

Info

Publication number: CN111863515B
Application number: CN202010563065.2A
Authority: CN
Inventors: 杨文先
Original assignee: Chennuo Electric Technology Group Co ltd
Current assignee: Chennuo Electric Technology Group Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2022-07-22
Anticipated expiration: 2040-06-19
Also published as: CN111863515A

Abstract

The invention relates to the technical field of vacuum contactors, and discloses an arc extinguish chamber contact piece emergency treatment device of a vacuum contactor. According to the invention, the channel is arranged in the static contact, so that the emergency power connection contact can be sleeved in the channel, when emergency treatment is required, the insulating bolt is only required to be rotated to push the emergency power connection contact to be pressed down, the bottom end of the emergency power connection contact breaks through the insulating rubber, the insulating rubber is extruded at the position between the emergency power connection contact and the static contact, an insulating function is achieved, meanwhile, the bottom end of the emergency power connection contact is contacted with the moving contact to conduct current, the other end of the emergency power connection contact is contacted with the power connection ring to complete a current path, and therefore, sufficient time is provided for workers to maintain, and the safety of the device is improved.

Description

Vacuum contactor's explosion chamber contact piece emergency treatment device

Technical Field

The invention relates to the technical field of vacuum contactors, in particular to an emergency treatment device for an arc extinguish chamber contact piece of a vacuum contactor.

Background

The shell of the vacuum arc-extinguishing chamber is made of glass or ceramic insulating material, the internal vacuum degree is usually above 0.01Pa, because the air in the shell is less, the contact opening distance can be made very small, the electric arc can be easily extinguished, the contact material is generally made of copper, antimony, osmium and other alloys, the shield cover in the arc-extinguishing chamber has the functions that when the current is cut off, metal steam diffused from the contact gap is condensed, the arc extinguishing is facilitated, the metal steam can be prevented from splashing on the insulating shell to reduce the insulating strength of the insulating shell, the movable contact is connected with the lower end of the shell by a corrugated pipe, the movable contact can move up and down without air leakage, but the existing device has a big problem that whether the device is damaged or not can not be judged by appearance, so that the replacement of the device is influenced, because once the device has no function, the current can not be switched on, and the damage is discovered in use, once the contact piece needs to be replaced, the replacement speed is low, the use of other devices is influenced, and even potential safety hazards are brought.

Disclosure of Invention

The invention provides an arc extinguish chamber contact piece emergency treatment device of a vacuum contactor, which has the advantages of emergency treatment, high safety, stable structure and comfortable use and solves the problems in the background technology.

The invention provides the following technical scheme: an emergency treatment device for contact pieces of an arc extinguish chamber of a vacuum contactor comprises a fixed plate, wherein an electromagnetic coil is fixedly mounted at the bottom of one side of the fixed plate, a positioning slide rod is fixedly mounted at the top of one side of the fixed plate, a pry bar is movably sleeved at the top end of the positioning slide rod, a brake separating spring is movably sleeved at the bottom of the positioning slide rod, a rotating shaft is movably sleeved at the bottom of the pry bar, an insulating rod is fixedly mounted at the bottom of the pry bar, an insulating connector is movably sleeved at the top of the insulating rod, a contact spring is fixedly mounted at the top of the insulating connector, an upper top plate is fixedly mounted at the top of the contact spring, a moving contact is fixedly mounted at the top end of the upper top plate, a conducting wire is fixedly sleeved at the middle part of the moving contact, a copper bar is led out under the fixed mounting of the other end of the conducting wire, an insulating plate is fixedly mounted at the top end of the copper bar, the top end of the insulating plate is fixedly provided with an upper leading-out copper bar, the other end of the upper leading-out copper bar is fixedly sleeved with a static contact, and the middle part of the static contact is fixedly sleeved with a ceramic shell.

Carefully, the middle part fixed mounting of pinch bar has adsorption magnet, mutual attraction between adsorption magnet and the solenoid, and adsorption magnet's size is less than solenoid middle part open-ended size.

And carefully selecting, wherein limiting rods are fixedly arranged at two ends of the upper surface of the insulating connecting head, and the top ends of the limiting rods are movably sleeved on two sides of the upper top plate.

And carefully selecting, wherein a fixed plate is fixedly arranged at the bottom end of the lower leading-out copper bar, and the top end of the fixed plate is fixedly arranged with the top end of the upper leading-out copper bar.

Carefully selecting, the top fixed mounting of fixed plate has the protective bracket, the other end fixed mounting of protective bracket is on the top of fixed plate.

And carefully selecting, wherein an insulating bolt is sleeved on the middle part of the protective support in a threaded manner, and the bottom end of the insulating bolt is movably sleeved on the emergency electric contact.

And carefully selecting, wherein an electricity connecting ring is movably sleeved at one end outside the emergency electricity connecting contact, and the electricity connecting ring is fixedly sleeved in the middle of the upper leading-out copper bar.

And carefully selecting, a reset spring is fixedly installed in the middle of one end, far away from the power connection ring, of the emergency power connection contact, the bottom end of the reset spring is fixedly installed in the static contact, and insulating rubber is fixedly installed at the bottom end of the static contact.

The ceramic contact is characterized in that a vacuum arc extinguish chamber is arranged inside the ceramic shell, a shielding cover is fixedly mounted at the top end of the vacuum arc extinguish chamber, and the shielding cover is fixedly sleeved on the periphery of the static contact.

The invention has the following beneficial effects:

1. according to the emergency power connection device, the channel is formed in the static contact, so that the emergency power connection contact can be sleeved in the channel, when emergency treatment is needed, the insulating bolt is only required to be rotated to push the emergency power connection contact to be pressed down, the insulating rubber is broken by the bottom end of the emergency power connection contact, the insulating rubber is extruded at the position between the emergency power connection contact and the static contact, an insulating function is achieved, meanwhile, the bottom end of the emergency power connection contact is in contact with the movable contact, current is conducted, the other end of the emergency power connection contact is in contact with the power connection ring, a current path is completed, and therefore sufficient time is provided for workers to maintain, and the safety of the device is improved.

2. According to the invention, the fixing plate is arranged between the lower lead-out copper bar and the upper lead-out copper bar, so that when an external circuit needs to be connected, the wiring end is only inserted into the wiring holes at the two ends of the fixing plate, and then the wiring end is fixed through the power connection bolt, the circuit connection of the device can be completed, the stability of the device is improved, the position of the device is fixed by using the fixing plate, the condition that the contact connection is broken when the position of the device shakes is avoided, and the safety of the device is improved.

3. According to the invention, the positioning slide rod is arranged in the middle of the opening spring, and the top end of the positioning slide rod penetrates through the top of the prying rod, so that the position of the device is more stable during opening or closing, the device is more comfortable to use, and the limiting rods are arranged at the two sides of the contact spring and penetrate through the upper top plate for the connection reliability of the device, so that the position of the moving contact is limited by the limiting rods during opening or closing, and the reliability of the device is further improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the invention at point A in FIG. 1;

FIG. 3 is a schematic view of the electrical connection ring of the present invention.

In the figure: 1. a fixing plate; 2. an electromagnetic coil; 3. adsorbing a magnet; 4. a pry bar; 5. positioning a sliding rod; 6. a brake separating spring; 7. a rotating shaft; 8. an insulating rod; 9. an insulated connector; 10. a contact spring; 11. an upper top plate; 12. a limiting rod; 13. a moving contact; 14. a conductive line; 15. copper bars are led out from the lower part; 16. a fixing plate; 17. an insulating plate; 18. copper bars are led out from the upper part; 19. a protective bracket; 20. an insulating bolt; 21. an emergency electrical contact; 22. a power connection ring; 23. carrying out static contact; 24. a return spring; 25. an insulating rubber; 26. a ceramic housing; 27. a shield case; 28. a vacuum arc-extinguishing chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-3, an emergency treatment device for contact pieces of an arc extinguish chamber of a vacuum contactor comprises a fixed plate 1, an electromagnetic coil 2 is fixedly installed at the bottom of one side of the fixed plate 1, a positioning slide rod 5 is fixedly installed at the top of one side of the fixed plate 1, a pry bar 4 is movably sleeved at the top end of the positioning slide rod 5, an adsorption magnet 3 is fixedly installed in the middle of the pry bar 4, the adsorption magnet 3 and the electromagnetic coil 2 attract each other, the size of the adsorption magnet 3 is smaller than that of an opening in the middle of the electromagnetic coil 2, the adsorption magnet 3 is arranged in the middle of the pry bar 4, the position of the adsorption magnet 3 is arranged at a corresponding position of the electromagnetic coil 2, and therefore when the electromagnetic coil 2 is electrified to generate magnetic attraction, the adsorption magnet 3 can be smoothly adsorbed to the electromagnetic coil 2 to complete closing, and the size of the adsorption magnet 3 is set to be smaller than that of the opening in the middle of the electromagnetic coil 2, the fit degree of the device is improved, the bottom of the positioning slide rod 5 is movably sleeved with the opening spring 6, the bottom of the pry rod 4 is movably sleeved with the rotating shaft 7, the bottom of the pry rod 4 is fixedly provided with the insulating rod 8, the top of the insulating rod 8 is movably sleeved with the insulating connector 9, two ends of the upper surface of the insulating connector 9 are fixedly provided with the limiting rods 12, the top ends of the limiting rods 12 are movably sleeved on two sides of the upper top plate 11, two limiting rods 12 are arranged on two sides of the upper surface of the insulating connector 9, so that the limiting rods 12 are utilized to limit the position between the insulating connector 9 and the upper top plate 11, strong downward pressure generated on the upper top plate 11 is avoided, the contact spring 10 is prevented from receiving large extrusion force, the contact spring 10 is elastically fatigued, the reliability of the device is improved, the limiting rods 12 are utilized for limiting, and the structure is enabled to operate more stably, the top of the insulating connector 9 is fixedly provided with a contact spring 10, the top of the contact spring 10 is fixedly provided with an upper top plate 11, the top of the upper top plate 11 is fixedly provided with a moving contact 13, the middle part of the moving contact 13 is fixedly sleeved with a conducting wire 14, the other end of the conducting wire 14 is fixedly provided with a lower leading-out copper bar 15, the bottom of the lower leading-out copper bar 15 is fixedly provided with a fixed plate 16, the top of the fixed plate 16 and the top of the upper leading-out copper bar 18 are fixedly provided with a fixed plate 16, the top of the fixed plate 16 and the upper leading-out copper bar 18 are connected, so that the connection between the structures is more stable, the firmness of the device is improved, meanwhile, the position of the device is preliminarily fixed by adopting the fixed plate 16, the stability of the device is improved, the top of the fixed plate 16 is fixedly provided with a protection bracket 19, the other end of the protection bracket 19 is fixedly arranged on the top of the fixed plate 16, the top end of the fixed plate 16 is provided with a protective bracket 19, the other end of the protective bracket 19 is fixedly arranged at the top end of the ceramic shell 26, so that the fixed plate 16 is connected with the ceramic shell 26, the connection firmness between the structures is improved, meanwhile, the ceramic shell 26 is more stable, and the safety of the device is improved, the middle part of the protective bracket 19 is sleeved with an insulating bolt 20 through threads, the bottom end of the insulating bolt 20 is movably sleeved on an emergency power connection contact 21, the middle part of the protective bracket 19 is provided with the insulating bolt 20, the insulating bolt 20 is connected with the emergency power connection contact 21, so that the emergency power connection contact 21 can be pushed to ascend or descend by rotating the insulating bolt 20, the emergency power connection foundation is ensured, the usability of the device is improved, the outer end of the emergency power connection contact 21 is movably sleeved with a power connection ring 22, the power connection ring 22 is fixedly sleeved on the middle part of the upper lead-out copper bar 18, one end of the emergency power connection contact 21 is sleeved with the power connection ring 22 to complete through-flow, the power connection ring 22 is installed in the middle of the vacuum arc extinguish chamber 28, so that the middle parts of the emergency power connection contact 21 and the emergency power connection contact 21, which are far away from one end of the power connection ring 22, are fixedly provided with the return spring 24, the bottom end of the return spring 24 is fixedly installed in the static contact 23, the bottom end of the static contact 23 is fixedly provided with the insulating rubber 25, the middle part of the emergency power connection contact 21 is provided with the return spring 24, so that the emergency power connection contact 21 cannot break the insulating rubber 25 under the condition of external force, the reliability of the device is improved, the safety of the device is higher, meanwhile, the top of the emergency power connection contact 21 is provided with the safety plug, the safety plug is required to be pulled out to press the emergency power connection contact 21 to break the insulating rubber 25 during use, the reliability of the device is improved, and the connection is generated between the upper lead-out copper bars 18, the through-flow function is ensured, the device is more comfortable to use, the top end of the lower lead-out copper bar 15 is fixedly provided with an insulating plate 17, the top end of the insulating plate 17 is fixedly provided with an upper lead-out copper bar 18, the other end of the upper lead-out copper bar 18 is fixedly sleeved with a fixed contact 23, the middle part of the fixed contact 23 is fixedly sleeved with a ceramic shell 26, the interior of the ceramic shell 26 is provided with a vacuum arc extinguish chamber 28, the top end of the vacuum arc extinguish chamber 28 is fixedly provided with a shielding cover 27, the shielding cover 27 is fixedly sleeved on the periphery of the fixed contact 23, a vacuum interrupter 28 is started inside the ceramic housing 26, and the inside of the vacuum interrupter 28 is evacuated, thereby ensuring the foundation of the device work, and a shielding cover 27 is arranged on the top of the vacuum arc-extinguishing chamber 28, and the shielding cover 27 is surrounded around the static contact 23, thereby generating metal vapor when arc quenching is carried out, which is beneficial to arc quenching and improves the sensitivity of the device.

The working principle is as follows: when the emergency power supply device is used, firstly, the device is installed, the lower leading-out copper bar 15 and the upper leading-out copper bar 18 of the device are connected with an external circuit, the device starts to work, when the device needs to be connected, the power-on switch-on is conducted, so that the magnetic attraction force generated by the switch-on circuit on the electromagnetic coil 2 is used for attracting the attracting magnet 3 to the electromagnetic coil 2, the pry bar 4 is driven to synchronously move, the lever principle is generated by the rotating shaft 7, the upper leg of the insulating rod 8 is enabled to push the movable contact 13 upwards to be in contact with the fixed contact 23, the circuit connection is completed, when poor contact occurs, the emergency power connection contact 21 is pushed downwards by the insulating bolt 20, the bottom end of the emergency power connection contact 21 breaks through the insulating rubber 25 to be in contact with the movable contact 13, meanwhile, the other end of the emergency power connection contact 21 is connected with the power connection ring 22, the emergency circuit connection is completed, and finally, the damaged device is replaced.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Meanwhile, in the drawings of the invention, the filling pattern is only used for distinguishing the layers and is not limited at all.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum contactor's explosion chamber contact piece emergency treatment device, includes first fixed plate (1), its characterized in that: the electromagnetic coil (2) is fixedly mounted at the bottom of one side of the first fixing plate (1), the positioning sliding rod (5) is fixedly mounted at the top of one side of the first fixing plate (1), a pry bar (4) is movably sleeved at the top of the positioning sliding rod (5), a tripping spring (6) is movably sleeved at the bottom of the positioning sliding rod (5), a rotating shaft (7) is movably sleeved at the bottom of the pry bar (4), an insulating rod (8) is fixedly mounted at the bottom of the pry bar (4), an insulating connector (9) is movably sleeved at the top of the insulating rod (8), a contact spring (10) is fixedly mounted at the top of the insulating connector (9), an upper top plate (11) is fixedly mounted at the top of the contact spring (10), a moving contact (13) is fixedly mounted at the top of the upper top plate (11), a conducting wire (14) is fixedly sleeved at the middle part of the moving contact (13), a lower lead-out copper bar (15) is fixedly mounted at the other end of the conductive wire (14), an insulating plate (17) is fixedly mounted at the top end of the lower lead-out copper bar (15), an upper lead-out copper bar (18) is fixedly mounted at the top end of the insulating plate (17), a static contact (23) is fixedly sleeved at the other end of the upper lead-out copper bar (18), and a ceramic shell (26) is fixedly sleeved in the middle of the static contact (23); two ends of the upper surface of the insulating connector (9) are fixedly provided with limiting rods (12), and the top ends of the limiting rods (12) are movably sleeved on two sides of the upper top plate (11); a second fixing plate (16) is fixedly mounted at the bottom end of the lower leading-out copper bar (15), and the top end of the second fixing plate (16) is fixedly mounted with the top end of the upper leading-out copper bar (18); a protective bracket (19) is fixedly arranged at the top of the second fixing plate (16); the middle part of the protective bracket (19) is in threaded sleeve connection with an insulating bolt (20), and the bottom end of the insulating bolt (20) is movably sleeved on an emergency electric contact (21); an electric connecting ring (22) is movably sleeved at one end outside the emergency electric connecting contact (21), and the electric connecting ring (22) is fixedly sleeved in the middle of the upper lead-out copper bar (18); a return spring (24) is fixedly installed in the middle of one end, far away from the power connection ring (22), of the emergency power connection contact (21), the bottom end of the return spring (24) is fixedly installed in the static contact (23), and an insulating rubber (25) is fixedly installed at the bottom end of the static contact (23); vacuum interrupter (28) have been seted up to ceramic package (26) inside, vacuum interrupter's (28) top fixed mounting has shield cover (27), shield cover (27) are fixed to be cup jointed around static contact (23).

2. The emergency treatment device for the contact plate of the arc extinguish chamber of the vacuum contactor as claimed in claim 1, wherein: the middle part fixed mounting of pinch bar (4) has adsorption magnet (3), attract each other between adsorption magnet (3) and solenoid (2), and the size of adsorption magnet (3) is less than solenoid (2) middle part open-ended size.