JP7443576B2 - high speed dosing device - Google Patents

Description

Embodiments of the present invention relate to high speed dosers.

There is a switching device that maintains insulation between terminals to which a high voltage is applied during normal operation, and quickly connects the terminals at arbitrary timing to allow large current to flow. Injectors are used in a variety of applications, such as high-speed grounding devices and bypass switches in power transmission systems, injectors for commutation circuits in DC circuit breakers, and current source injectors for fusion plasma generation.

An example of a dosing device is an electrode-driven dosing device. The electrode-driven dosing device has a pair of main electrodes placed opposite each other to which a high voltage is applied during steady state. In the pair of main electrodes, one main electrode is a movable electrode and the other main electrode is a fixed electrode. The movable electrode is arranged so that it can move toward and away from the fixed electrode. During the closing operation, the movable electrode is moved by the drive unit in a direction into which it comes into contact with the fixed electrode. When the distance between the movable electrode and the fixed electrode becomes less than or equal to the insulation distance with respect to the applied voltage, arc discharge occurs between the movable electrode and the fixed electrode, and the energizer starts energizing. The movable electrode contacts the fixed electrode while continuing arc discharge. The dosing device continues to be energized with the movable electrode in contact with the fixed electrode, and ends the dosing operation.

However, in the electrode-driven dosing device, after arc discharge occurs between the electrodes, the dosing operation ends with the electrodes in contact with each other. Therefore, when a large current is applied, the metal on the surface of the electrodes melted by arc discharge is cooled, and the electrodes are welded together in spots. The welded electrodes are separated during the circuit-opening operation, and the welded portion is torn off, forming a sharp protrusion on the electrode. This sharp protrusion becomes an electric field concentration area during steady state when the electrodes are open and a high voltage is applied, and deteriorates the insulation performance between the electrodes.

Japanese Patent Publication No. 55-163724 Japanese Patent Application Publication No. 2019-186162 Japanese National Publication No. 57-007127

The problem to be solved by the present invention is to provide a high-speed dosing device that can suppress a drop in withstand voltage performance due to protrusions caused by welding between electrodes.

The high-speed input device of the embodiment includes a contact portion, a drive mechanism portion, and a shock buffer portion. The contact portion has a drive electrode and a counter electrode. The driving electrode and the counter electrode are coaxially spaced apart and facing each other. The drive electrode and counter electrode are accessible to each other. A voltage is externally applied between the drive electrode and the counter electrode. The drive mechanism section is connected to the drive electrode. The drive mechanism section has a drive section, a drive-side biasing section, and a drive-side stopper. The drive section applies a driving force in a first direction to the drive electrode to approach the counter electrode during the closing operation. The drive-side biasing section always applies a return force to the drive electrode in the second direction away from the counter electrode. The drive-side stopper regulates displacement of the drive electrode in the second direction in a state where the drive electrode and the counter electrode are separated during normal operation. The shock buffer is connected to the counter electrode. The impact buffer section has an opposing biasing section and an opposing stopper. The opposing biasing section always applies a return force to the opposing electrode in the second direction where it contacts the drive electrode. The opposing stopper restricts displacement of the opposing electrode in the second direction in a state where the drive electrode and the opposing electrode are separated during normal operation. The closing operation includes an approach step, a contact step, and a separation step. In the approaching step, the driving electrode approaches the counter electrode by the driving force of the driving section. In the contact step, after the drive electrode contacts the counter electrode and is displaced in the first direction together with the counter electrode, the drive electrode is displaced together with the counter electrode in the first direction by the return force of the drive-side biasing section and the return force of the counter-side bias section. Flip in two directions. In the separating step, displacement of the opposing electrode in the second direction is restricted by the opposing stopper, and the drive electrode separates from the opposing electrode.

FIG. 1 is a sectional view showing a high-speed input device of the first embodiment. FIG. 1 is a sectional view showing a high-speed input device of the first embodiment. FIG. 1 is a sectional view showing a high-speed input device of the first embodiment. FIG. 1 is a sectional view showing a high-speed input device of the first embodiment. FIG. 3 is a sectional view showing a high-speed input device according to a second embodiment. FIG. 3 is a sectional view showing a high-speed input device according to a second embodiment. FIG. 3 is a sectional view showing a high-speed input device according to a second embodiment. FIG. 3 is a sectional view showing a high-speed input device according to a second embodiment. FIG. 7 is a cross-sectional view showing a high-speed input device according to a third embodiment. FIG. 7 is a cross-sectional view showing a high-speed input device according to a third embodiment. FIG. 7 is a cross-sectional view showing a high-speed input device according to a third embodiment. FIG. 7 is a cross-sectional view showing a high-speed input device according to a third embodiment. FIG. 4 is a sectional view showing a high-speed input device according to a fourth embodiment.

Hereinafter, a high-speed dispenser according to an embodiment will be described with reference to the drawings. In the following description, components having the same or similar functions are denoted by the same reference numerals. Further, redundant explanations of these configurations may be omitted.

(First embodiment)
1 to 4 are cross-sectional views showing the high-speed dosing device of the first embodiment. FIG. 1 shows the high-speed dosing device 1 in a steady state in a non-energized cutoff state. 2 to 4 show the operation process during the closing operation of the high-speed closing device 1 in the closing state where electricity can be applied.

As shown in FIG. 1, the high-speed dispenser 1 includes a contact section 2, a drive mechanism section 3, and a shock buffer section 4. The contact section 2 is connected to a drive mechanism section 3 and a shock buffer section 4.

The contact portion 2 will be explained.
The contact portion 2 includes a drive electrode 11 , a counter electrode 12 , and a pressure vessel 13 .

The drive electrode 11 and the counter electrode 12 are each formed into a rod shape and are arranged coaxially. The drive electrode 11 and the counter electrode 12 are arranged such that the tip of the drive electrode 11 and the tip of the counter electrode 12 are separated from each other and face each other. Drive electrode 11 and counter electrode 12 are accessible to each other. The driving electrode 11 and the counter electrode 12 can be switched between an open circuit state in which their respective tips are separated from each other and a closed circuit state in which their respective tips are in contact with each other by relatively moving in a straight line. Hereinafter, the direction in which the drive electrode 11 and the counter electrode 12 extend will be referred to as the axial direction.

The drive electrode 11 includes a discharge section 11a provided at the tip, and a current-carrying shaft 11b connected to the discharge section 11a. The counter electrode 12 includes a discharge section 12a provided at the tip and a current-carrying shaft 12b connected to the discharge section 12a. The discharge parts 11a and 12a are made of a material that has high wear resistance (arc resistance) against arc discharge. The current-carrying shafts 11b and 12b are made of a highly conductive material. In this embodiment, the material with high wear resistance to arc discharge is a copper-tungsten alloy. In this embodiment, the highly conductive material is a copper alloy. However, the materials forming the drive electrode 11 and the counter electrode 12 are not limited to the above materials. At least the discharge parts 11a and 12a of the driving electrode 11 and the counter electrode 12 may be formed of a metal material having high wear resistance against arc discharge, and may be formed of, for example, a copper-chromium alloy in addition to a copper-tungsten alloy. You can leave it there. Moreover, each of the drive electrode 11 and the counter electrode 12 may be formed of the same material from the discharge parts 11a, 12a to the current-carrying shafts 11b, 12b.

The pressure vessel 13 includes an insulating cylinder 14, a first lid 15, and a second lid 16.
The insulating tube 14 includes a cylindrical insulating container 14a and metal flanges 14b and 14c fixed to both ends of the insulating container 14a. A first lid 15 is electrically connected to the flange 14b. A second lid 16 is electrically connected to the flange 14c. The first lid 15 and the second lid 16 are each disk-shaped plates. The first lid 15 and the second lid 16 are hermetically joined to the flanges 14b and 14c over the entire circumference so as to close the openings at the ends of the insulating cylinder 14, respectively. A through hole is provided in the center of each of the first lid 15 and the second lid 16. An annular seal portion 17 is attached to the through hole of the first lid 15 . An annular seal portion 18 is attached to the through hole of the second lid 16 .

The pressure vessel 13 accommodates the contact portions of the driving electrode 11 and the counter electrode 12 with each other. The pressure vessel 13 encloses the entirety of the discharge portions 11a and 12a of the drive electrode 11 and the counter electrode 12, and a portion of each of the current-carrying shafts 11b and 12b of the drive electrode 11 and the counter electrode 12. The current supply shaft 11b passes through the through hole of the first lid 15 and extends to the outside of the pressure vessel 13. The current supply shaft 12b passes through the through hole of the second lid 16 and extends to the outside of the pressure vessel 13. The current supply shaft 11b is in close contact with the inner circumferential surface of the seal portion 17 in the through hole of the first lid 15. The energizing shaft 11b is movable in the axial direction while keeping the pressure vessel 13 airtight and slidingly in contact with the seal portion 17. The current supply shaft 12b is in close contact with the seal portion 18 in the through hole of the second lid 16. The energizing shaft 12b is movable in the axial direction while keeping the pressure vessel 13 airtight and slidingly in contact with the seal portion 18.

The pressure vessel 13 is filled with insulating gas. For example, sulfur hexafluoride (SF ₆ ) gas can be used as the insulating gas. However, as the insulating gas, in addition to sulfur hexafluoride gas, any one of nitrogen, carbon dioxide, oxygen, and air, or a mixture thereof may be used. The pressure of the insulating gas sealed in the pressure vessel 13 is equal to or higher than atmospheric pressure.

Inside the pressure vessel 13, a first shield 19 and a second shield 20 made of metal are arranged. Each shield 19, 20 is formed into a cylindrical shape. The shields 19 and 20 are arranged concentrically with each other and lined up in the axial direction. A first end of the first shield 19 is coupled to the first lid 15 for electrical conduction. A first end of the second shield 20 is coupled to the second lid 16 for electrical conduction. The second end of the first shield 19 and the second end of the second shield 20 are opposed to each other inside the pressure vessel 13. The outer peripheral edges of each of the second end of the first shield 19 and the second end of the second shield 20 are rounded.

The first shield 19 surrounds the drive electrode 11 . The second shield 20 surrounds the counter electrode 12. The current-carrying shaft 11b of the drive electrode 11 is movable in the axial direction while maintaining electrical conduction with the first shield 19 while slidingly contacting the current collector 21 provided on the inner periphery of the first shield 19. The current-carrying shaft 12b of the counter electrode 12 is movable in the axial direction while maintaining electrical conduction with the second shield 20 while slidingly contacting the current collector 22 provided on the inner periphery of the second shield 20. Thereby, the drive electrode 11 is electrically connected to the first shield 19, the first lid 15, and the first flange 14b via the current collector 21. The counter electrode 12 is electrically connected to the second shield 20, the second lid 16, and the second flange 14c via the current collector 22.

The end of the current-carrying shaft 11b is connected to an insulated operating rod 23 outside the pressure vessel 13. The current supply shaft 11b is connected to the drive mechanism section 3 via an insulated operating rod 23. The end of the current-carrying shaft 12b is connected to an insulated operating rod 24 outside the pressure vessel 13. The current-carrying shaft 12b is connected to the impact buffer 4 via an insulated operating rod 24. By connecting the drive mechanism section 3 and the shock buffer section 4 to the contact section 2 via the insulating operation rods 23 and 24, which are insulators, the contact section 2 and the drive mechanism section 3 are electrically insulated, and the contact section 2 and the shock buffer section 4 are electrically insulated.

The drive mechanism section 3 will be explained.
The drive mechanism section 3 is connected to the drive electrode 11. The drive mechanism section 3 includes a drive shaft 31, a mechanism box 32, a drive section 33, a position holding section 34, and a drive-side braking section 35.

The drive shaft 31 extends outside the mechanism box 32 with a portion thereof housed inside the mechanism box 32. The drive shaft 31 is connected to the current-carrying shaft 11b of the drive electrode 11 via the insulated operating rod 23 on the outside of the mechanism box 32. Thereby, the drive shaft 31 is displaced together with the drive electrode 11.

The drive unit 33 is an electromagnetic repulsion operating mechanism. The drive unit 33 includes a metal ring 36 (repulsion body) connected to the drive shaft 31 and a coil 37 fixed to the mechanism box 32. The ring 36 and the coil 37 are arranged to face each other in the axial direction inside the mechanism box 32. A good conductor 36a having particularly low electrical resistivity is fixed to a portion of the ring 36 facing the coil 37. The ring 36 is arranged on the contact portion 2 side with respect to the coil 37. In this embodiment, the good conductor 36a is made of oxygen-free copper, and the parts of the ring 36 other than the good conductor 36a are made of high-strength extra-super duralumin. By applying a coil current to the coil 37 from an excitation circuit (not shown), an induced current in the opposite direction to the coil current is generated in the ring 36 (particularly the good conductor 36a). A repulsive Lorentz force is generated between the coil 37 to which the coil current is applied and the ring 36 to which the induced current is applied. The drive unit 33 uses the Lorentz force generated between the coil 37 and the ring 36 as a driving force during the closing operation. The driving force generated in the ring 36 displaces the driving electrode 11 in a direction toward the counter electrode 12 (first direction) via the driving shaft 31 and the insulated operation rod 23.

The position holding section 34 includes a drive side return spring 38 (drive side urging section), a drive side spring receiver 39, and a drive side stopper 40. The drive side spring receiver 39 is coupled to the drive shaft 31. The base 41 is arranged on the contact portion 2 side with respect to the drive side spring receiver 39. The base 41 is arranged to surround the drive shaft 31. The base 41 is fixed to the mechanism box 32. The drive-side return spring 38 is a compression coil spring installed between the drive-side spring receiver 39 and the base 41 in a compressed state. The drive-side return spring 38 always applies a spring force to the drive-side spring receiver 39 in the direction of separating from the contact portion 2 (second direction). Hereinafter, the spring force of the drive-side return spring 38 will be referred to as a drive-side return force.

A drive-side stopper 40 is fixed to the base 41. The drive side stopper 40 is arranged on the side opposite to the contact portion 2 side with respect to the drive side spring receiver 39. The drive-side stopper 40 is arranged to surround the drive shaft 31. The drive-side stopper 40 positions the drive shaft 31 and the drive electrode 11 in a normal state by contacting the drive-side spring receiver 39 that receives the drive-side return force.

The drive-side brake section 35 includes a cylinder 42 and a piston 43. In this embodiment, the drive-side brake section 35 is a shock absorber. The inside of the cylinder 42 is filled with hydraulic oil. When the piston 43 is pushed into the cylinder 42, a damping force is generated in the piston 43 according to the displacement amount and speed due to the viscous resistance of the hydraulic oil. The damping force is generated in a direction opposite to the pushing direction of the piston 43. Further, when the pushed piston 43 is released, the piston 43 is pushed out from the cylinder 42 by a not-illustrated return spring installed inside the cylinder 42 and comes to rest at a predetermined position. The cylinder 42 is fixed to the mechanism box 32. The piston 43 is installed in a state in which it is in contact with the end of the drive shaft 31 and pushed into the cylinder 42 during a steady state when the drive-side spring receiver 39 is in contact with the drive-side stopper 40 and is stationary.

The impact buffer section 4 will be explained.
Shock buffer section 4 is connected to counter electrode 12 . The impact buffering section 4 includes an opposing shaft 51, a mechanism box 52, a position holding section 53, and an opposing braking section 54.

The opposing shaft 51 extends to the outside of the mechanism box 52 with a part thereof housed inside the mechanism box 52. The opposing shaft 51 is connected to the current-carrying shaft 12b of the opposing electrode 12 via the insulated operating rod 24 on the outside of the mechanism box 52. Thereby, the opposing shaft 51 is displaced together with the opposing electrode 12.

The position holding section 53 includes an opposing return spring 55 (opposing side biasing section), an opposing spring receiver 56, an opposing stopper 57, and a base 58. The opposing spring bearing 56 is coupled to the opposing shaft 51. The base 58 is arranged on the side opposite to the contact portion 2 side with respect to the opposing spring receiver 56. The base 58 is fixed to the mechanism box 52. The opposing return spring 55 is a compression coil spring installed between the opposing spring receiver 56 and the base 58 in a compressed state. The opposing return spring 55 is arranged so as to always apply a spring force to the opposing spring receiver 56 in a direction toward the contact portion 2 . Hereinafter, the spring force of the opposite side return spring 55 will be referred to as the opposite side return force.

An opposing stopper 57 is fixed to the base 58. The opposing stopper 57 is arranged on the contact portion 2 side with respect to the opposing spring receiver 56. The opposing stopper 57 is arranged to surround the opposing shaft 51. The opposing stopper 57 positions the opposing shaft 51 and the opposing electrode 12 in a normal state by contacting the opposing spring receiver 56 that receives the opposing return force.

The opposing brake section 54 includes a cylinder 59, a piston 60, and a stopper 61. In this embodiment, the opposing brake section 54 is a shock absorber like the drive brake section 35. The configurations of the cylinder 59 and piston 60 are the same as those of the cylinder 42 and piston 43 of the drive-side braking section 35.

The cylinder 59 is fixed to the mechanism box 52 via a base 58. In a steady state when the opposite spring receiver 56 is in contact with the opposite stopper 57 and is stationary, the piston 60 is not in contact with the opposite spring receiver 56, is pushed out from the cylinder 59, and is stopped at a predetermined position. is set up.

Stopper 61 is fixed to base 58. The stopper 61 is arranged so as to come into contact with the opposite spring receiver 56 during the process in which the opposite spring receiver 56 pushes the piston 60 into the cylinder 59, and to limit the amount by which the piston 60 is pushed within a certain value.

The high-speed dosing device 1 of this embodiment is connected to an external circuit using the first lid 15 and the second lid 16 of the pressure vessel 13 of the contact portion 2 as terminals. The drive electrode 11, the insulated operating rod 23, the drive shaft 31, the ring 36, and the drive side spring receiver 39 form a drive side movable part 71 that operates as a unit. The opposing electrode 12, the insulated operating rod 24, the opposing shaft 51, and the opposing spring receiver 56 form an opposing movable portion 72 that operates as a unit.

A steady state in which the high-speed input device 1 is in a de-energized cutoff state will be described.
As shown in FIG. 1, the drive-side movable portion 71 is stationary at a position where the drive-side spring receiver 39 is pressed against the drive-side stopper 40 by the drive-side return spring 38. The end face of the discharge portion 11a of the drive electrode 11 is placed flush with the R-chamfered end face of the shield 19.

The opposing side movable portion 72 is stationary at a position where the opposing side spring receiver 56 is pressed against the opposing side stopper 57 by the opposing side return spring 55. The end face of the discharge portion 12a of the counter electrode 12 is arranged flush with the R-chamfered end face of the shield 20.

When the high-speed input device 1 is connected to an external circuit, a voltage is applied between the first lid 15 and the second lid 16, which serve as terminals. The first lid 15 is electrically connected to the drive electrode 11 and the first shield 19 and has the same potential. The second lid 16 is electrically connected to the counter electrode 12 and the second shield 20 and has the same potential. Therefore, the voltage applied to the high-speed injection device 1 is applied between the drive electrode 11 and the first shield 19 and the counter electrode 12 and the second shield 20 inside the pressure vessel 13.

In steady state, the driving electrode 11 and the counter electrode 12 are in an open circuit state where they are sufficiently separated from each other, and the electric field near the drive electrode 11 and the counter electrode 12 is sufficiently large compared to the dielectric breakdown electric field of the insulating gas sealed in the pressure vessel 13. It's getting lower. Therefore, drive electrode 11 and counter electrode 12 are electrically insulated. Therefore, the high-speed dosing device 1 is in a cutoff state in which there is no conduction between the terminals.

A closing operation in which the high-speed input device 1 changes from a steady state in which it is de-energized and in a cut-off state to a power-on state in which it can be energized, and finally returns to the steady cut-off state will be described. In the following description of the closing operation, a state will be described in which the high-speed closing device 1 is connected to an external circuit and a high voltage is applied to the drive electrode 11 and the counter electrode 12.

The closing operation is started by applying a coil current to the coil 37 of the drive unit 33 from an excitation circuit (not shown) to generate a driving force in the ring 36 during the steady state shown in FIG. The closing operation includes an approach step, a contact step, and a separation step in this order.

The approach step will be explained. In the approach step, the state shown in FIG. 1 passes through the state shown in FIG. 2, and then the state shown in FIG. 3 is reached.

The drive side movable part 71 receives the driving force of the drive part 33. Here, the driving force of the drive unit 33 is sufficiently larger than the driving-side return force by the drive-side return spring 38. The drive-side movable section 71 starts to be displaced in a direction in which the drive electrode 11 approaches the counter electrode 12 while compressing the drive-side return spring 38 by the drive force of the drive section 33 .

When the drive electrode 11 approaches the counter electrode 12, the electric field near the drive electrode 11 and the counter electrode 12 increases. Since the electric field near the drive electrode 11 and the counter electrode 12 is higher than the dielectric breakdown field of the insulating gas sealed in the pressure vessel 13, a gap between the discharge section 11a of the drive electrode 11 and the discharge section 12a of the counter electrode 12 is increased. dielectric breakdown occurs. When the drive electrode 11 approaches the counter electrode 12 to the position shown in FIG. 2, an arc discharge 73 is generated between the discharge section 11a of the drive electrode 11 and the discharge section 12a of the counter electrode 12 due to dielectric breakdown. Since the drive electrode 11 and the counter electrode 12 are brought into conduction by the arc discharge 73, the first lid 15 and the second lid 16 are also brought into conduction. When the first lid 15 and the second lid 16, which are connection terminals with an external circuit, are brought into conduction, the high-speed dosing device 1 changes to a dosing state and starts energizing.

Thereafter, the drive-side movable portion 71 continues to be displaced independently until the drive electrode 11 comes into contact with the counter electrode 12 as shown in FIG. At this time, the piston 43 of the drive-side brake section 35 is pushed out of the cylinder 42 by a return spring (not shown) installed inside the cylinder 42 as the drive-side movable section 71 is displaced.

The contact step will be explained. In the contact step, the state shown in FIG. 3 passes through the state shown in FIG. 4, and then returns to the state shown in FIG. 3 again.

As shown in FIG. 3, the discharge portion 11a of the drive electrode 11 contacts the discharge portion 12a of the counter electrode 12. Thereby, conduction between the drive electrode 11 and the counter electrode 12 is maintained through the contact portion between the drive electrode 11 and the counter electrode 12. Therefore, the high-speed input device 1 also continues to be in the closing state where it can be energized. At this time, the piston 43 pushed out from the cylinder 42 comes to rest at a predetermined position. However, the piston 43 may be stationary during the approach step.

After the discharge portion 11a of the drive electrode 11 contacts the discharge portion 12a of the counter electrode 12, the opposite side movable portion 72 is pushed by the drive side movable portion 71 accelerated by the driving force of the drive portion 33. Thereby, as shown in FIG. 4, the driving side movable part 71 and the opposing side movable part 72 are both displaced in the output direction of the driving force with the driving electrode 11 in contact with the opposing electrode 12.

The driving force of the driving part 33 is attenuated after the driving electrode 11 contacts the counter electrode 12. The driving force decreases as the distance between the ring 36 and the coil 37 increases. Furthermore, the driving force decreases as the coil current attenuates. Note that the driving force of the driving section 33 may start to attenuate before the driving electrode 11 contacts the counter electrode 12. On the other hand, the drive side movable section 71 compresses the drive side return spring 38, and the opposing side movable section 72 is displaced while compressing the opposing side return spring 55. Therefore, the drive-side return force and the opposing-side return force that act on each of the drive-side movable portion 71 and the opposing-side movable portion 72 in the direction opposite to the driving force increase. Further, the opposing spring receiver 56 of the opposing movable part 72 receives a damping force in the opposite direction to the pushing direction by pushing the piston 60 of the opposing brake part 54 into the cylinder 59. Further, when the drive-side movable section 71 contacts and accelerates the opposing-side movable section 72, it imparts momentum and decelerates. Therefore, after the drive-side movable part 71 contacts the opposite-side movable part 72, it decelerates greatly while being displaced together with the opposite-side movable part 72, and after sufficiently decelerating, the opposite-side spring receiver 56 of the opposite-side movable part 72 contacts the stopper 61. Upon contact, it stops and enters the state shown in FIG.

In addition, in the process of transitioning from the state shown in FIG. 3 to the state shown in FIG. 4, even if the drive electrode 11 and the counter electrode 12 are temporarily separated due to the repulsive force at the time of contact, they maintain conduction through arc discharge. Then, upon re-contact, conduction via the contact part is resumed. Therefore, the high-speed input device 1 also continues to be in the closing state where it can be energized.

After the drive side movable part 71 and the opposing side movable part 72 are stopped, the displacement direction is reversed by the drive side return force of the drive side return spring 38 and the opposing side return force of the opposing side return spring 55. The driving side movable part 71 and the opposing side movable part 72 are accelerated and displaced in the direction opposite to the output direction of the driving force, and are again in the state shown in FIG. 3. Here, the opposing side movable portion 72 is stopped when the opposing side spring receiver 56 comes into contact with the opposing side stopper 57.

Note that in the process of returning from the state shown in FIG. 4 to the state shown in FIG. 3, the drive electrode 11 and the counter electrode 12 are basically in a contact state and maintain conduction through the contact portion. Even if the drive electrode 11 and the counter electrode 12 are temporarily separated, they maintain continuity through arc discharge. Therefore, the high-speed input device 1 also continues to be in the closing state where it can be energized.

The separation step will be explained. In the separation step, the state shown in FIG. 3 passes through the state shown in FIG. 2, and then the state shown in FIG. 1 is reached.

As shown in FIGS. 3 and 2, after the opposite movable part 72 stops, the displacement of the opposite electrode 12 is regulated by the opposite stopper 57, so that the drive side return spring 38 It is displaced independently by the restoring force. Here, when the drive shaft 31 pushes the piston 43 of the drive-side brake section 35 into the cylinder 42, the drive-side movable section 71 receives a damping force in a direction opposite to the pushing direction, and begins to decelerate.

In the process of returning from the state shown in FIG. 3 to the state shown in FIG. 2, the opposing side movable part 72 is stopped, and the discharge part 11a of the drive electrode 11 is separated from the discharge part 12a of the counter electrode 12. On the other hand, the drive electrode 11 and the counter electrode 12 maintain conduction via the arc discharge 73, and the high-speed injection device 1 also maintains the injection state in which it can conduct electricity.

Finally, the drive-side movable section 71 is decelerated by the damping force of the drive-side braking section 35, and is stopped when the drive-side spring receiver 39 contacts the drive-side stopper 40, returning to the state shown in FIG. . At this time, the driving force of the driving part 33 is completely attenuated or is sufficiently smaller than the driving-side return force, and the driving-side movable part 71 is maintained in the state shown in FIG. 1.

During the process of returning from the state shown in FIG. 2 to the state shown in FIG. 1, or after returning to the state shown in FIG. The arc is extinguished by interruption or attenuation. As a result, the drive electrode 11 and the counter electrode 12 become electrically insulated again. As a result of the above, the high-speed making device 1 returns to the cut-off state in which there is no conduction between the terminals, and the making operation ends.

As explained above, in the high-speed dosing device 1 of this embodiment, the driving part 33 applies a driving force to the driving electrode 11, so that the driving electrode 11 first approaches the counter electrode 12. When the drive electrode 11 approaches the counter electrode 12, arc discharge occurs between the discharge section 11a of the drive electrode 11 and the discharge section 12a of the counter electrode 12, and energization starts. Next, the driving electrode 11 contacts the counter electrode 12 while continuing to be energized, and is displaced together with the counter electrode 12 in the direction in which the driving force is output. At this time, the drive electrode 11 and the counter electrode 12 are decelerated by the return force of the drive side return spring 38 and the opposite side return spring 55. Then, the direction of displacement of the drive electrode 11 and the counter electrode 12 is reversed by the return force. Next, the displacement of the opposing electrode 12 is regulated by the opposing stopper 57, so that the drive electrode 11 is separated from the opposing electrode 12 by the return force of the drive-side return spring 38. In the process of separating the drive electrode 11 from the counter electrode 12, arc discharge occurs between the drive electrode 11 and the counter electrode 12, and energization continues. Next, the displacement of the drive electrode 11 is regulated by the drive-side stopper 40, so that the drive electrode 11 returns to its normal position. The energization ends when the arc discharge is extinguished in the process where the drive electrode 11 separates from the counter electrode 12 or returns to the normal position. As described above, the high-speed dispenser 1 of this embodiment operates as an electrode-driven high-speed dispenser. Therefore, according to the present embodiment, since a trigger electrode like a trigger discharge type high speed dosing machine is not required, it is possible to provide a high speed dosing machine 1 that can operate more times than a trigger discharge type high speed dosing machine. Further, according to the present embodiment, since an expensive pulse power supply which is essential in a trigger discharge type high speed dosing machine is not required, it is possible to provide a high speed dosing machine 1 whose equipment cost is lower than that of a trigger discharge type.

In addition, in the high-speed input device 1 of this embodiment, after the drive electrode 11 contacts the counter electrode 12 during the input operation, the drive side movable part 71 is displaced in the operating direction of the driving force together with the opposite side movable part 72. The momentum of the driving side movable section 71 is distributed to the opposing side movable section 72. Furthermore, in addition to the drive-side return force of the drive-side return spring 38, the drive-side movable part 71 receives the opposite-side return force of the opposite-side return spring 55 and the damping force of the opposite-side brake part 54, thereby significantly decelerating the drive-side movable part 71. do. According to this configuration, during the closing operation, after the drive electrode 11 is brought close to the counter electrode 12 and conduction by arc discharge is started between the discharge parts 11a and 12a, the drive electrode 11 contacts the counter electrode 12 and is driven. The side movable part 71 decelerates. Therefore, the drive-side movable part 71 hardly slows down until conduction starts due to the arc discharge, and the electric field between the discharge parts 11a and 12a can be rapidly increased, so that the start time of arc discharge can be shortened and variations can be reduced. . Thereby, it is possible to provide a high-speed dosing device 1 with shorter dosing time and less variation in dosing time. Further, according to the above configuration, the counter electrode 12 can move together with the drive electrode 11 in the output direction of the drive force after coming into contact with the drive electrode 11 during the closing operation, so that the impact force at the time of contact can be reduced. . Therefore, it is possible to suppress damage to the device due to the impact force when the drive electrode 11 and the counter electrode 12 come into contact, and it is possible to provide a high-speed input device 1 that can be operated many times.

Moreover, the high-speed dosing device 1 generates an arc discharge between the discharge part 11a of the drive electrode 11 and the discharge part 12a of the counter electrode 12 during the dosing operation, and starts energization. Furthermore, after bringing the discharge part 11a of the drive electrode 11 into contact with the discharge part 12a of the counter electrode 12, the discharge part 11a is separated from the discharge part 12a while continuing energization, and the closing operation is completed. According to this configuration, during the closing operation, after the discharge portion 11a of the drive electrode 11 whose metal surface has been partially melted due to arc discharge and the discharge portion 12a of the counter electrode 12 come into contact, they are separated again before being cooled and the metal surface is partially melted. Finish the operation. Therefore, it is possible to suppress the occurrence of welded parts in the discharge parts 11a and 12a. Therefore, it is possible to suppress the formation of sharp protrusions on the surfaces of the discharge parts 11a and 12a when the welded parts are separated. This makes it possible to prevent electric field concentration from occurring due to sharp protrusions during steady state when the electrodes are open and a high voltage is applied. Therefore, it is possible to provide a high-speed input device 1 that can maintain the insulation performance between the electrodes and suppress the deterioration of the withstand voltage performance.

Further, in the high-speed dosing device 1, the discharge portion 11a of the drive electrode 11 separates from the discharge portion 12a of the counter electrode 12 during the dosing operation, and an arc discharge is generated between the discharge portions 11a and 12a. According to this configuration, even if a weld is formed when the discharge parts 11a and 12a come into contact and a sharp protrusion is formed when the discharge parts 11a and 12a are separated, the sharp protrusion is evaporated by the arc discharge and removed. can do. This makes it possible to prevent electric field concentration from occurring due to sharp protrusions during steady state when the electrodes are open and a high voltage is applied. Therefore, it is possible to provide a high-speed input device 1 that can maintain the insulation performance between the electrodes and suppress the deterioration of the withstand voltage performance.

The drive unit 33 is an electromagnetic repulsion operation mechanism having a metal ring 36 and a coil 37 fixed to the mechanism box 32, and applies a driving force to the drive electrode 11 by the induced repulsion force generated in the ring 36. According to this configuration, during the closing operation, the drive electrode 11 is brought closer to the counter electrode 12 in a shorter time than the configuration in which the drive is driven by oil pressure, the restoring force of a spring, the electromagnetic force of a motor, etc., and the distance between the discharge parts 11a and 12a is Conduction by arc discharge can be initiated. Therefore, it is possible to provide a high-speed dosing device 1 with a short dosing time.

The drive side return spring 38 and the opposite side return spring 55 are coil springs. According to this configuration, a linear restoring force can be applied to the drive electrode 11 and the counter electrode 12. Therefore, it is possible to stably hold the drive electrode 11 and the counter electrode 12 in a stationary position during normal operation, and to reliably decelerate the drive electrode 11 and the counter electrode 12 during the closing operation.

The high-speed dosing device 1 has a drive side braking section 35. During the closing operation, the drive-side braking section 35 contacts the drive electrode 11, which is displaced in a direction opposite to the output direction of the drive force of the drive section 33 due to the return force of the opposite-side return spring 55, and decelerates the drive electrode 11. According to this configuration, it is possible to attenuate the momentum of the drive electrode 11 that is displaced toward the stationary position in a steady state. Therefore, damage to the device due to impact force when the drive electrode 11 is stopped can be suppressed.

The high-speed dosing device 1 has an opposing brake section 54 . During the closing operation, the opposing brake section 54 contacts the driving electrode 11 and contacts the opposing electrode 12 that is displaced together with the driving electrode 11 by the driving force of the driving section 33, thereby decelerating the opposing electrode 12. According to this configuration, it is possible to attenuate the momentum of the drive electrode 11 and the counter electrode 12 that are displaced toward the reversal position during the closing operation. Therefore, damage to the device due to impact force when the drive electrode 11 and the counter electrode 12 are reversed can be suppressed.

The high-speed injection device 1 has a pressure vessel 13 filled with insulating gas. Pressure vessel 13 accommodates the contact portion of drive electrode 11 and counter electrode 12 . A portion of each of the driving electrode 11 and the counter electrode 12 extends to the outside of the pressure vessel 13 while keeping the pressure vessel 13 airtight. According to this configuration, the movable parts linked to each of the drive electrode 11 and the counter electrode 12 can be arranged outside the pressure vessel 13. Thereby, work efficiency such as maintenance work of the high-speed dosing device 1 can be improved. Further, the pressure vessel 13 can be made smaller in size compared to a configuration in which at least one of the driving electrode and the counter electrode is entirely housed in the pressure vessel. Therefore, the amount of insulating gas used can be reduced.

The discharge portion 11a of the drive electrode 11 and the discharge portion 12a of the counter electrode 12 are formed of a metal material having arc resistance. According to this configuration, melting of the surfaces of the discharge parts 11a and 12a due to arc discharge can be suppressed during the closing operation. Therefore, it is possible to suppress the occurrence of welded parts in the discharge parts 11a and 12a. Therefore, it is possible to suppress the formation of sharp protrusions on the surfaces of the discharge parts 11a and 12a when the welded parts are separated. This makes it possible to prevent electric field concentration from occurring due to sharp protrusions during steady state when the electrodes are open and a high voltage is applied. Therefore, it is possible to provide a high-speed input device 1 that can maintain the insulation performance between the electrodes and suppress the deterioration of the withstand voltage performance.

(Second embodiment)
5 to 8 are cross-sectional views showing the high-speed dosing device of the second embodiment. FIG. 5 shows the high-speed dosing device 101 in a steady state in a non-energized cutoff state. 6 to 8 show the operation process during the closing operation of the high-speed closing device 101 in the closing state where electricity can be applied.

The second embodiment shown in FIG. 5 differs from the first embodiment in that the contact portion between the drive electrode 11 and the counter electrode 12 is housed in a vacuum container 112. Note that the configuration other than that described below is the same as that of the first embodiment.

As shown in FIG. 5, the high-speed input device 101 includes a contact portion 102 in place of the contact portion 2 of the first embodiment. The contact section 102 is connected to the drive mechanism section 3 and the shock buffer section 4. The contact portion 102 includes a drive electrode 11, a counter electrode 12, a pressure vessel 111, and a vacuum vessel 112.

The configuration of the pressure vessel 111 is basically the same as the pressure vessel 13 of the first embodiment. The relationship between the pressure vessel 111, the drive electrode 11, and the counter electrode 12 is also the same as in the first embodiment. A difference from the pressure vessel 13 of the first embodiment is that a vacuum vessel 112 is sealed inside the pressure vessel 111 of this embodiment. The pressure vessel 111 is filled with insulating gas as in the first embodiment. The pressure of the insulating gas is preferably from atmospheric pressure to about three times the atmospheric pressure in order to reduce the pressure difference with the inside of the vacuum container 112.

The inside of the vacuum container 112 is maintained in a vacuum state. The vacuum container 112 includes an insulating tube 113, a first end plate 114, a second end plate 115, a first bellows 116, and a second bellows 117.

The insulating tube 113 is a cylindrical insulating container. The first end plate 114 and the second end plate 115 are made of metal. The first end plate 114 and the second end plate 115 are each disk-shaped plates. The first end plate 114 is hermetically joined to the insulating tube 113 so as to close the opening at the first end of the insulating tube 113. The second end plate 115 is hermetically joined to the insulating tube 113 so as to close the opening at the second end of the insulating tube 113. A through hole is provided in the center of each of the first end plate 114 and the second end plate 115. A first end of a first bellows 116 is hermetically joined to the through hole of the first end plate 114 . A first end of a second bellows 117 is hermetically joined to the through hole of the second end plate 115 . The first bellows 116 and the second bellows 117 are metal tubes with a bellows structure that can be expanded and contracted in the axial direction, and are formed of thin plates. The vacuum vessel 112 is fixed to the pressure vessel 111 by connecting the second end plate 115 to the second lid 16 of the pressure vessel 111 via the support portion 118.

The vacuum container 112 accommodates the contact portion of the drive electrode 11 and the counter electrode 12. The vacuum container 112 encloses the entire discharge portions 11a and 12a of the drive electrode 11 and the counter electrode 12, and a portion of each of the current-carrying shafts 11b and 12b of the drive electrode 11 and the counter electrode 12. The current supply shaft 11b passes through the through hole of the first end plate 114 and extends to the outside of the vacuum container 112. The current supply shaft 12b passes through the through hole of the second end plate 115 and extends to the outside of the vacuum container 112.

The current-carrying shaft 11b of the drive electrode 11 is hermetically joined to the second end of the first bellows 116. The current supply shaft 11b is movable in the axial direction while keeping the vacuum container 112 airtight. The current-carrying shaft 12b of the counter electrode 12 is hermetically joined to the second end of the second bellows 117. The current supply shaft 12b is movable in the axial direction while keeping the vacuum container 112 airtight.

Inside the pressure vessel 111, a first current collecting flange 119 and a second current collecting flange 120 made of metal are arranged in place of the shields 19 and 20 of the first embodiment. Each current collecting flange 119, 120 is formed in an annular shape. The current collecting flanges 119, 120 are arranged concentrically with each other. The first current collection flange 119 is fixed adjacent to the first lid 15 and is electrically connected to the first lid 15 . The second current collection flange 120 is fixed adjacent to the second lid 16 and is electrically connected to the second lid 16. The drive electrode 11 penetrates inside the first current collection flange 119 . The counter electrode 12 penetrates the inside of the second current collection flange 120. The current-carrying shaft 11b of the drive electrode 11 is movable in the axial direction while maintaining electrical continuity with the first current collecting flange 119 while slidingly contacting the current collecting portion 21 provided on the inner periphery of the first current collecting flange 119. It has become. The current-carrying shaft 12b of the counter electrode 12 is movable in the axial direction while maintaining electrical continuity with the second current collecting flange 120 while slidingly contacting the current collecting portion 22 provided on the inner periphery of the second current collecting flange 120. It has become. Thereby, the drive electrode 11 is electrically connected to the first current collecting flange 119, the first lid 15, and the flange 14b via the current collecting section 21. The counter electrode 12 is electrically connected to the second current collecting flange 120, the second lid 16, and the second flange 14c via the current collecting section 22. Furthermore, the drive electrode 11 is electrically connected to the first bellows 116 and the first end plate 114 . Further, the counter electrode 12 is electrically connected to the second bellows 117, the second end plate 115, and the support portion 118.

The end of the current-carrying shaft 11b of the drive electrode 11 is connected to an insulated operating rod 23 outside the pressure vessel 111. The drive electrode 11 is connected to the drive mechanism section 3 via an insulated operating rod 23. The end of the current-carrying shaft 12b of the counter electrode 12 is connected to an insulated operating rod 24 outside the pressure vessel 111. The counter electrode 12 is connected to the shock buffer 4 via an insulated operating rod 24 . By connecting the drive mechanism section 3 and the shock buffer section 4 to the contact section 102 via the insulating operation rods 23 and 24, the contact section 102 and the drive mechanism section 3 are electrically insulated, and the contact section 102 is electrically insulated. and the shock buffer section 4 are electrically insulated.

The high-speed input device 101 of this embodiment is connected to an external circuit using the first lid 15 and the second lid 16 of the pressure vessel 111 of the contact portion 102 as terminals. The drive electrode 11, the insulated operating rod 23, the drive shaft 31, the ring 36, and the drive side spring receiver 39 form a drive side movable part 71 that operates as a unit. The opposing electrode 12, the insulated operating rod 24, the opposing shaft 51, and the opposing spring receiver 56 form an opposing movable portion 72 that operates as a unit.

A steady state in which the high-speed input device 101 is in a non-energized cutoff state will be described.
As shown in FIG. 5, the drive-side movable portion 71 is stationary at a position where the drive-side spring receiver 39 is pressed against the drive-side stopper 40 by the drive-side return spring 38. The opposing side movable portion 72 is stationary at a position where the opposing side spring receiver 56 is pressed against the opposing side stopper 57 by the opposing side return spring 55.

When the high-speed input device 101 is connected to an external circuit, a voltage is applied between the first lid 15 and the second lid 16, which serve as terminals. The first lid 15 is electrically connected to the drive electrode 11 and has the same potential. The second lid 16 is electrically connected to the counter electrode 12 and has the same potential. Therefore, the voltage applied to the high-speed input device 101 is applied between the drive electrode 11 and the counter electrode 12 inside the vacuum container 112.

In a steady state, the drive electrode 11 and the counter electrode 12 are in an open circuit state where they are sufficiently separated from each other, and the electric field near the drive electrode 11 and the counter electrode 12 is sufficiently low compared to the breakdown electric field of the vacuum inside the vacuum container 112. There is. Therefore, drive electrode 11 and counter electrode 12 are electrically insulated. Therefore, the high-speed input device 101 is in a cutoff state in which there is no conduction between the terminals.

A closing operation in which the high-speed input device 101 changes from a steady state in which it is not energized to a closed state in which it is energized, and finally returns to the normal shut-off state will be described. In the following description of the closing operation, a state will be described in which the high-speed closing device 101 is connected to an external circuit and a high voltage is applied to the drive electrode 11 and the counter electrode 12.

The charging operation of the high-speed charging device 101 is basically the same as the charging operation of the high-speed charging device 1 of the first embodiment. The closing operation of the high-speed loading device 101 also starts by applying a coil current to the coil 37 from an excitation circuit (not shown) to generate a driving force in the ring 36 in the steady state shown in FIG.

During the charging operation, the high-speed charging device 101 sequentially operates from the state of FIG. 5 to the state of FIG. 6 and the state of FIG. 7, and then to the state of FIG. 8, and then changes from the state of FIG. 8 to the state of FIG. 5, and finally returns to the state shown in FIG. 5. This is because, in the first embodiment, the high-speed dosing device 1 during the dosing operation operates from the state shown in FIG. 1 to the state shown in FIG. 4, and then from the state shown in FIG. 4 to the state shown in FIG. This corresponds to a series of operations to return to state 1.

The difference between the high-speed dosing device 101 during the dosing operation and the high-speed dosing device 1 of the first embodiment is that arc discharge occurs inside the vacuum vessel 112.
In the high-speed feeder 101, when the drive side movable part 71 is displaced and the drive electrode 11 and the counter electrode 12 approach each other, the electric field near the drive electrode 11 and the counter electrode 12 increases. As the electric field near the drive electrode 11 and the counter electrode 12 becomes higher than the dielectric breakdown electric field of the vacuum inside the vacuum container 112, dielectric breakdown occurs between the discharge part 11a of the drive electrode 11 and the discharge part 12a of the counter electrode 12. occurs. When the drive electrode 11 approaches the counter electrode 12 to the position shown in FIG. 6, an arc discharge 73 is generated between the discharge section 11a of the drive electrode 11 and the discharge section 12a of the counter electrode 12 due to dielectric breakdown.

As explained above, according to the high-speed dosing device 101 of this embodiment, the drive electrode 11 and the counter electrode 12 operate in the same manner as in the first embodiment, so that the same effects as in the first embodiment can be obtained. can play.

Furthermore, in this embodiment, the vacuum container 112 accommodates the contact portion of the drive electrode 11 and the counter electrode 12. According to this configuration, arc discharge is generated inside the vacuum container 112 during the closing operation of the high-speed loading device 101. Thereby, unlike arc discharge under an insulating gas atmosphere, decomposition of the insulating gas due to arc discharge can be suppressed. This makes it possible to prevent unintentional dielectric breakdown due to deterioration of the insulation performance of the insulating gas during steady-state conditions when the electrodes are open and high voltage is applied, creating a high-speed dosing device that can maintain the insulation performance between the electrodes. 101 can be provided.

(Third embodiment)
9 to 12 are cross-sectional views showing the high-speed dosing device of the third embodiment. FIG. 9 shows the high-speed input device 201 in a steady state in a non-energized cutoff state. 10 to 12 show the operation process during the closing operation of the high-speed closing device 201 which is in the closing state where electricity can be applied.

The third embodiment shown in FIG. 9 differs from the second embodiment in that a shock buffer 204 is housed in a vacuum container 212. Note that the configuration other than that described below is the same as that of the second embodiment.

As shown in FIG. 9, the high-speed input device 201 includes a contact section 202 and a shock buffer section 204 instead of the contact section 102 and shock buffer section 4 of the second embodiment.

The contact portion 202 will be explained.
The contact section 202 is connected to the drive mechanism section 3 and the shock buffer section 204. The contact section 202 includes a pressure vessel 211 and a vacuum vessel 212 instead of the pressure vessel 111 and vacuum vessel 112 of the second embodiment.

The pressure vessel 211 includes a second lid 213 instead of the second lid 16 of the second embodiment. The second lid 213 differs from the second lid 16 in that a through hole and a seal portion are not provided. The second lid 213 completely closes the opening of the insulating cylinder 14. The relationship between the pressure vessel 211 and the drive electrode 11 is the same as in the second embodiment. The pressure vessel 211 houses the entire counter electrode 12. A vacuum container 212 is sealed inside the pressure container 211 of this embodiment. The pressure vessel 211 is filled with an insulating gas similarly to the pressure vessel 111 of the second embodiment. The pressure of the insulating gas is preferably from atmospheric pressure to about three times the atmospheric pressure in order to reduce the pressure difference with the inside of the vacuum container 212.

The inside of the vacuum container 212 is maintained in a vacuum state. The vacuum container 212 includes a second end plate 214 instead of the second end plate 115 of the second embodiment. The second end plate 214 is hermetically joined to the insulating tube 113 so as to close the opening at the second end of the insulating tube 113. The second end plate 214 differs from the second end plate 115 in that a through hole is not provided and a bellows is not fixed. The second end plate 214 is fixed adjacent to the second lid 213 of the pressure vessel 211 and is electrically connected to the second lid 213 .

The vacuum container 212 accommodates the contact portion of the drive electrode 11 and the counter electrode 12. The vacuum container 212 encloses the entire discharge section 11a of the drive electrode 11, a part of the current-carrying shaft 11b of the drive electrode 11, the entire counter electrode 12, and the shock buffer section 204. The current-carrying shaft 12b of the counter electrode 12 is connected to the impact buffer 204 inside the vacuum container 212. The impact buffer section 204 will be described later.

The current collection flange 120 that was arranged inside the pressure vessel 111 of the second embodiment is not arranged inside the pressure vessel 211. The current collecting section 22 provided on the current collecting flange 120 in the second embodiment is arranged on the shock buffer section 204.

The impact buffer section 204 will be explained.
The impact buffer 204 is housed in a vacuum container 212. The impact buffer 204 is fixed to a second end plate 214 of the vacuum container 212. The impact buffering section 204 does not include the opposing shaft 51, the mechanism box 52, and the opposing brake section 54 of the other embodiments, and includes a position holding section 221 instead of the position holding section 53.

The position holding section 221 includes an opposing stopper 222 and a base 223 instead of the opposing stopper 57 and base 58 of the other embodiments. Further, in this embodiment, the current-carrying shaft 12b of the counter electrode 12 is directly coupled to the counter spring receiver 56. The base 223 is disposed on the opposite side of the contact portion 202 with respect to the opposing spring receiver 56 . The base 223 is fixed adjacent to the second end plate 214. The base 223 is electrically connected to the second end plate 214. An opposing stopper 222 is fixed to the base 223. The opposing stopper 222 is arranged on the contact portion 202 side with respect to the opposing spring receiver 56. The opposing stopper 222 is arranged to surround the opposing electrode 12. A current collector 22 is provided on the inner periphery of the opposing stopper 222 . The current-carrying shaft 12b of the counter electrode 12 is movable in the axial direction while slidingly contacting the current collecting part 22 and maintaining conduction with the shock buffer part 204. As a result, the counter electrode 12 is electrically connected to the shock buffering section 204, the second end plate 214, the second lid 213, and the second flange 14c via the current collecting section 22.

The high-speed input device 201 of this embodiment is connected to an external circuit using the first lid 15 and the second lid 213 of the pressure vessel 211 of the contact portion 202 as terminals. The drive electrode 11, the insulated operating rod 23, the drive shaft 31, the ring 36, and the drive side spring receiver 39 form a drive side movable part 71 that operates as a unit. The opposing electrode 12 and the opposing spring receiver 56 form an opposing movable portion 272 that operates as a unit.

A steady state in which the high-speed input device 201 is in a non-energized cutoff state will be described.
As shown in FIG. 9, the drive-side movable portion 71 is stationary at a position where the drive-side spring receiver 39 is pressed against the drive-side stopper 40 by the drive-side return spring 38. The opposing side movable part 272 is stationary at a position where the opposing side spring receiver 56 is pressed against the opposing side stopper 222 by the opposing side return spring 55.

When the high-speed input device 201 is connected to an external circuit, a voltage is applied between the first lid 15 and the second lid 213, which serve as terminals. The first lid 15 is electrically connected to the drive electrode 11 and has the same potential. The second lid 213 is electrically connected to the counter electrode 12 and has the same potential. Therefore, the voltage applied to the high-speed input device 201 is applied between the drive electrode 11 and the counter electrode 12 inside the vacuum container 212.

In steady state, the drive electrode 11 and the counter electrode 12 are in an open circuit state with a sufficient distance between them, and the electric field near the drive electrode 11 and the counter electrode 12 is sufficiently lower than the breakdown electric field of the vacuum inside the vacuum container 212. . Therefore, drive electrode 11 and counter electrode 12 are electrically insulated. Therefore, the high-speed input device 201 is in a cutoff state in which there is no conduction between the terminals.

A closing operation in which the high-speed input device 201 changes from a steady state in which it is not energized to a closed state in which it is energized, and finally returns to the normal shut-off state will be described. In the following description of the closing operation, a state will be described in which the high-speed closing device 201 is connected to an external circuit and a high voltage is applied to the drive electrode 11 and the counter electrode 12.

The charging operation of the high-speed charging device 201 is basically the same as the charging operation of the high-speed charging device 101 of the second embodiment. The closing operation of the high-speed closing device 201 also starts by applying a coil current to the coil 37 from an excitation circuit (not shown) to generate a driving force in the ring 36 in the steady state shown in FIG.

During the charging operation, the high-speed charging device 201 sequentially operates from the state shown in FIG. 9 to the state shown in FIG. 10 and FIG. 11, then to the state shown in FIG. 12, and then from the state shown in FIG. 12 to the state shown in FIG. 9, and finally returns to the state shown in FIG. 9. This is because, in the second embodiment, the high-speed dosing device 101 during the dosing operation operates from the state shown in FIG. 5 to the state shown in FIG. 8, and then from the state shown in FIG. 8 to the state shown in FIG. This corresponds to a series of operations to return to state 5.

The difference between the high-speed dosing device 201 during the dosing operation and the high-speed dosing device 101 of the second embodiment is that when transitioning from the state of FIG. 11 to the state of FIG. 222 is to receive only the opposite return force from the opposite return spring 55 to decelerate and stop.

As explained above, according to the high-speed dosing device 201 of this embodiment, the drive electrode 11 and the counter electrode 12 operate in the same manner as in the first embodiment, so that the same effects as in the first embodiment can be obtained. can play.

Furthermore, in this embodiment, the impact buffer section 204 is housed in the vacuum container 212. According to this configuration, the opposing side movable section 272 can be made lighter in weight compared to the opposing side movable section 72 of the other embodiments described above because it does not include the insulating operation rod 24 and the opposing shaft 51. Therefore, during the closing operation, it is possible to further reduce the impact force that occurs when the opposing side movable section 272 contacts the drive side movable section 71. Therefore, it is possible to suppress damage to the device due to the impact force when the drive electrode 11 and the counter electrode 12 come into contact, and it is possible to provide the high-speed input device 201 that can be operated many times.

Furthermore, according to the present embodiment, the entire counter electrode 12 is housed in the vacuum container 212, thereby eliminating the need for the second bellows 117 that was connected to the counter electrode 12 in the second embodiment. Since the counter electrode 12 in the second embodiment accelerates rapidly after contacting the drive electrode 11, a large mechanical load is generated on the second bellows 117 connected to the counter electrode 12, which may cause damage. There is. Therefore, in this embodiment, by eliminating the second bellows 117, it is possible to avoid vacuum leakage of the vacuum container 212 due to damage, and it is possible to provide a high-speed input device 201 that can be operated more times.

(Fourth embodiment)
FIG. 13 is a sectional view showing a high-speed dosing device according to the fourth embodiment. FIG. 13 shows the high-speed input device 301 in a steady state in a non-energized cutoff state.
The fourth embodiment shown in FIG. 13 differs from the third embodiment in that the impact buffer 304 is housed in the pressure vessel 211 outside the vacuum vessel 112. Note that the configuration other than that described below is the same as that of the third embodiment.

As shown in FIG. 13, the high-speed input device 301 includes a contact portion 302 and a shock buffer portion 304 in place of the contact portion 202 and shock buffer portion 204 of the third embodiment.

The contact portion 302 will be explained.
The contact section 302 is connected to the drive mechanism section 3 and the shock buffer section 304. The contact portion 302 includes the vacuum container 112 of the second embodiment instead of the vacuum container 212 of the third embodiment. The vacuum vessel 112 is fixed to the pressure vessel 211 by connecting the second end plate 115 to the second lid 213 of the pressure vessel 211 via the support portion 118. The second end plate 115 is electrically connected to the second lid 213.

The impact buffer section 304 will be explained.
The configuration of the impact buffer 304 is basically the same as the impact buffer 204 of the third embodiment. The shock absorber 304 is housed in the pressure vessel 211 outside the vacuum vessel 112. The impact buffer 304 is arranged between the second end plate 115 of the vacuum vessel 112 and the second lid 213 of the pressure vessel 211. The impact buffer 304 is fixed to the pressure vessel 211 by having the base 223 fixed adjacent to the second lid 213 . The impact buffer portion 304 is electrically connected to the second lid 213.

The high-speed input device 301 of this embodiment is connected to an external circuit using the first lid 15 and the second lid 213 of the pressure vessel 211 of the contact portion 302 as terminals. The drive electrode 11, the insulated operating rod 23, the drive shaft 31, the ring 36, and the drive side spring receiver 39 form a drive side movable part 71 that operates as a unit. The opposing electrode 12 and the opposing spring receiver 56 form an opposing movable portion 272 that operates as a unit. Note that the operation of the high-speed input device 301 is similar to the operation of the high-speed input device 201 of the third embodiment, so a description thereof will be omitted.

As explained above, according to the high-speed dosing device 301 of this embodiment, the driving electrode 11 and the counter electrode 12 operate in the same manner as in the first embodiment, so that the same effects as in the first embodiment can be obtained. can play.

Furthermore, in this embodiment, the impact buffer section 304 is housed in the pressure vessel 211. According to this configuration, the opposing movable section 272 is lighter in weight than the opposing movable section 72 of the first embodiment and the second embodiment because it does not include the insulated operation rod 24 and the opposing shaft 51. It is considered possible. Therefore, the same effects as in the third embodiment can be achieved.

Further, since the sliding portion of the opposing movable portion 272 can be removed from the vacuum container 112, the generation of foreign matter within the vacuum container 112 can be suppressed. Therefore, maintenance work for the contact portion 302 can be reduced, and workability such as maintenance work for the high-speed input device 301 can be improved.

In addition, although the electromagnetic repulsion operation mechanism was demonstrated as an example of the drive part 33 of the drive mechanism part 3 in the said embodiment, it is not limited to this structure. For example, as the drive unit, a hydraulic operating mechanism that uses a pressure difference between accumulated hydraulic pressure as the driving force, a spring operating mechanism that uses the force of an accumulated coil spring as the driving force, etc. may be applied. However, an electromagnetic repulsion mechanism is advantageous as the drive unit because it takes time to release the drive force and it is difficult to reduce the drive force suddenly after the drive electrode 11 and counter electrode 12 come into contact.

Further, in the above embodiment, the drive electrode 11 and the counter electrode 12 are connected to the drive mechanism section 3 and the shock buffer section 4 via the insulated operation rods 23 and 24, which are insulators, but the structure is limited to this. Not done. The drive electrode and the counter electrode may be directly connected to and electrically conductive to the drive mechanism section and the shock buffer section.

Further, in the above embodiment, the drive mechanism section 3 and the impact buffer section 4 are provided with the drive side brake section 35 and the opposing side brake section 54, but the configuration is not limited to this. The drive mechanism section and the shock buffer section may be provided with a position holding section that maintains the positions of the drive electrode and the counter electrode in a steady state and outputs a force to return them to the steady state during the closing operation.

Further, in the above embodiment, the drive side return spring 38 and the opposite side return spring 55 are coil springs, but the configuration is not limited to this. A disc spring, an air spring, or the like may be used as the drive side return spring and the opposite side return spring.

Furthermore, in the embodiment described above, the drive-side brake section 35 and the opposite-side brake section 54 are shock absorbers that output damping force using the viscous resistance of the hydraulic oil, but the structure is not limited to this. The driving side braking section and the opposing side braking section may be an air damper that utilizes the viscous resistance of air, or a rubber damper that utilizes a rubber damping mechanism. However, when considering the rise characteristics of the damping force with respect to the amount of pushing, a shock absorber that utilizes the viscous resistance of hydraulic oil is advantageous as a braking unit.

Further, in the embodiment described above, the stopper 61 that limits the amount of pushing into the shock absorber is provided on the opposing brake section 54, but the structure is not limited to this. If the opposing side movable part is decelerated and stopped by at least one of the opposing side return force of the opposing side return spring and the damping force of the shock absorber, it is not necessary to provide a stopper.

According to at least one embodiment described above, the drive section applies a driving force to the drive electrode in the direction of approaching the counter electrode during the closing operation, and the drive section always returns to the direction of separating the drive electrode from the counter electrode. A drive-side biasing part that applies force, a drive-side stopper that restricts the displacement of the drive electrode when the drive electrode and counter electrode are separated in a steady state, and a drive-side stopper that always returns to the direction in which it contacts the drive electrode with respect to the counter electrode. It has a biasing part on the opposing side that applies force and a stopper on the opposing side that restricts the displacement of the opposing electrode when the driving electrode and the opposing electrode are separated in a normal state, so it is easy to resist the protrusion caused by welding between the electrodes. Decrease in voltage performance can be suppressed.

Although several embodiments of the invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

Claims (12)

a contact portion having a drive electrode and a counter electrode that are spaced apart and facing each other on the same axis and are accessible to each other, and a voltage is applied from the outside between the drive electrode and the counter electrode;
a driving section connected to the drive electrode and applying a driving force in a first direction to the drive electrode to approach the counter electrode during a closing operation; a second drive section that separates the drive electrode from the counter electrode; a drive mechanism, the drive mechanism having a drive-side biasing portion that always applies a return force in the direction; and a drive-side stopper that restricts displacement of the drive electrode in the second direction when the drive electrode and the opposing electrode are separated in a steady state. Department and
an opposing biasing portion connected to the opposing electrode and always applying a return force to the opposing electrode in the second direction that contacts the driving electrode; a shock buffering section having an opposing stopper that restricts displacement of the opposing electrode in the second direction in a separated state;
Equipped with
The input operation is
an approaching step in which the driving electrode approaches the counter electrode by a driving force of the driving section;
After the drive electrode contacts the counter electrode and is displaced together with the counter electrode in the first direction, the drive electrode is displaced together with the counter electrode due to a return force of the drive-side biasing section and a return force of the counter-side bias section. a contacting step of reversing the direction to the second direction;
a separating step in which displacement of the opposing electrode in the second direction is regulated by the opposing stopper, and the driving electrode is separated from the opposing electrode;
Equipped with
High-speed dosing device. The input operation is
In the approaching step, the drive electrode approaches the counter electrode by the driving force of the drive unit and starts energizing;
In the contacting step, the driving electrode continues to be energized with the counter electrode,
In the separating step, while the driving electrode is separating from the counter electrode, an arc discharge is generated between the drive electrode and the counter electrode.
The high-speed dosing device according to claim 1. The drive unit includes:
a repellent body of good conductivity connected to the drive electrode;
a coil arranged opposite to the repellent;
Equipped with
The driving force that the driving unit gives to the driving electrode is an induced repulsive force generated in the repellent by applying a current to the coil.
The high-speed dosing device according to claim 1 or claim 2. At least one of the drive side biasing section and the opposing side biasing section is a coil spring.
The high-speed dosing device according to any one of claims 1 to 3. 5. The method according to claim 1, further comprising a drive-side braking section that decelerates the drive electrode by contacting the drive electrode displaced in the second direction by the return force of the opposite-side biasing section during the closing operation. The high-speed dosing device according to any one of the items. The method further includes an opposing braking section that contacts the driving electrode and decelerates the opposing electrode by contacting the opposing electrode that is displaced in the first direction together with the driving electrode by the driving force of the driving section during the closing operation. The high-speed dosing device according to any one of claims 1 to 5. further comprising a pressure vessel accommodating a contact portion of the drive electrode and the counter electrode and filled with an insulating gas,
A portion of each of the driving electrode and the counter electrode extends to the outside of the pressure vessel while keeping the pressure vessel airtight.
The high-speed dosing device according to any one of claims 1 to 6. The insulating gas is composed of at least one of sulfur hexafluoride gas, nitrogen, carbon dioxide, oxygen, and air.
The high-speed dosing device according to claim 7. The impact buffer is housed in the pressure vessel.
The high-speed dosing device according to claim 7 or claim 8. further comprising a vacuum container accommodating a contact portion of the drive electrode and the counter electrode,
A portion of the drive electrode extends to the outside of the vacuum container while keeping the vacuum container airtight.
The high-speed dosing device according to any one of claims 1 to 9. The shock buffer section is housed in the vacuum container.
The high-speed dosing device according to claim 10. At least a portion of the drive electrode and the counter electrode are formed of a metal material having arc resistance,
the metal material is a copper chromium alloy;
The high-speed dosing device according to any one of claims 1 to 11.

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