CN219159670U - Quick vortex driving reversing valve - Google Patents
Quick vortex driving reversing valve Download PDFInfo
- Publication number
- CN219159670U CN219159670U CN202223532247.7U CN202223532247U CN219159670U CN 219159670 U CN219159670 U CN 219159670U CN 202223532247 U CN202223532247 U CN 202223532247U CN 219159670 U CN219159670 U CN 219159670U
- Authority
- CN
- China
- Prior art keywords
- reversing valve
- repulsive force
- disc
- coil
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003990 capacitor Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A quick vortex driving reversing valve comprises a reversing valve part and a vortex driving part; the reversing valve part comprises a valve body and a reversing valve rod; the vortex driving part comprises an outer shell, one end of the shell is connected with the valve body through a connecting flange, and the other end of the shell is provided with a flange I; a switching-on repulsive force coil and a switching-off repulsive force coil are arranged in the inner cavity of the shell, a space is reserved between the switching-on repulsive force coil and the switching-off repulsive force coil, a disc body structure of the repulsive force disc is arranged in the space, one end of the repulsive force disc is connected with a reversing valve rod, and the reversing valve rod penetrates through the reversing valve rod and is inserted into the valve body. Through the structure, the utility model provides the rapid vortex-driven reversing valve with short action time and stable switch opening and closing state.
Description
Technical Field
The utility model relates to the technical field of high-voltage switch power transmission equipment, in particular to a rapid vortex driving reversing valve applied to a circuit breaker hydraulic mechanism of high-voltage sulfur hexafluoride gas-insulated metal-enclosed switchgear.
Background
With the rapid development of the power grid, the short-circuit current level of the voltage levels of 500kV, 220kV and the like rises year by year, the bus short-circuit current level of part of the transformer substation is close to or exceeds the breaking capacity of a breaker, and the problem of exceeding the short-circuit current is one of main contradictions restricting the development of the power grid and the safe operation of the power grid.
The traditional short-circuit current inhibition measures mainly comprise: equipment switching, bus line separation operation, line out-of-line operation, power grid loop opening operation, adoption of high-resistance equipment, installation of small reactance at a neutral point of a transformer and the like. At present, measures such as a stop line, bus line operation and the like are adopted to reduce the short-circuit current level of the power grid, but the measures have certain negative effects on the flexibility, reliability and economy of the power grid operation.
Aiming at the defects of conventional short-circuit current inhibition measures, a flexible short-circuit current inhibition technology is provided for a power grid, the topology structure of the system is dynamically changed during faults by adopting a fast switch, short-time separate operation of buses is realized, short-circuit current is limited, and meanwhile, the influence on the normal operation of the system is reduced. The fast switch is closed rapidly after the fault is removed, and the influence of long-term separate operation of the traditional bus on the power grid is avoided.
The action time of the circuit breaker is divided into four parts, namely the action time T1 of a traditional coil reversing valve, the mechanical separation time T2 of a contact, the short arcing time T3 and the arcing interval T4.
Conventional reversing devices are generally of two types, one being a conventional switch and one being a fast switch.
The conventional switching coil reversing valve has a motion time T1 of 15 milliseconds, a contact mechanical separation time T2 of 12 milliseconds, a short arcing time T3 of 11 milliseconds, an arcing interval T4 of 10 milliseconds and a total corresponding time of 48 milliseconds.
And (3) fast switching: the coil reversing valve action time T1 is 3 milliseconds, the contact mechanical separation time T2 is 5 milliseconds, the short arcing time T3 is 7 milliseconds, the arcing interval T4 is 25 milliseconds, and the total corresponding time is 25 milliseconds.
Disclosure of Invention
The utility model aims to overcome the defects of the existing structure and provide a rapid vortex driving reversing valve.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a quick vortex driving reversing valve comprises a reversing valve part and a vortex driving part; the reversing valve part comprises a valve body and a reversing valve rod; the vortex driving part comprises an outer shell, one end of the shell is connected with the valve body through a connecting flange, and the other end of the shell is provided with a flange I; a switching-on repulsive force coil and a switching-off repulsive force coil are arranged in the inner cavity of the shell, a space is reserved between the switching-on repulsive force coil and the switching-off repulsive force coil, a disc body structure of the repulsive force disc is arranged in the space, one end of the repulsive force disc is connected with a reversing valve rod, and the reversing valve rod penetrates through the reversing valve rod and is inserted into the valve body.
A flange II is arranged in the shell, and the flange II divides the internal cavity of the shell into a mechanical cavity and an electrical cavity; the closing repulsive force coil and the opening repulsive force coil are arranged in the electric cavity.
The repulsion disc consists of a disc structure and a cylindrical structure, wherein the disc structure is arranged between the closing repulsion coil and the opening repulsion coil, one end of the disc structure is connected with the valve body, the other end of the disc structure is connected with the cylindrical structure, and the cylindrical structure penetrates through the flange II and stretches into the mechanical cavity.
The disc body structure and the cylindrical structure are of an integrated structure.
The end part of the cylindrical structure is connected with a bistable holding device.
The bistable state retaining device comprises a connecting disc arranged at the end part of the cylindrical structure, a connecting rod is hinged to the outer circumference of the connecting disc, a spring is hinged to the other end of the connecting rod, and the other end of the spring is connected with the inner wall of the shell; the connecting rod and the spring are provided with N groups, and are uniformly distributed between the outer circumference of the connecting disc and the shell.
The inner wall of the shell is provided with a connecting ring, the outer surface of the connecting ring is connected with the shell, and the inner surface of the connecting ring is connected with the spring.
The beneficial effects of the utility model are as follows:
1. the repulsive force coil replaces the traditional coil, so that the coil reaction time is greatly shortened.
2. The coil drives the repulsive force disc to directly drive the reversing valve rod, so that the switching time of the traditional multi-stage reversing valve system is saved.
3. The vortex driving is used for replacing hydraulic driving, and the action time of the whole valve system is greatly shortened by utilizing the characteristics of short reaction time and high energy of the vortex driving.
In conclusion, the reaction time of the structure is shortened from 12-15ms to about 3ms, the action time is greatly shortened, and the requirements of the flexible short-circuit current suppression technology of the power grid are completely met.
Drawings
Fig. 1 is a diagram of a charge-discharge loop of a split coil energy storage capacitor.
Fig. 2 is a simplified diagram of the charge-discharge loop of the split-coil storage capacitor.
Fig. 3 is a schematic diagram of a rapid swirl-driven reversing valve.
FIG. 4 is a block diagram of a rapid swirl driven reversing valve.
Fig. 5 illustrates the principle of the eddy current effect.
Wherein: the valve comprises a valve body 1, a reversing valve rod 2, a switching-on repulsive force coil 3, a bistable holding device 4, a flange I5, a flange II6, a repulsive force disc 7, a connecting flange 8 and a switching-off repulsive force coil 9.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A quick vortex driving reversing valve comprises a reversing valve part and a vortex driving part; the reversing valve part comprises a valve body 1 and a reversing valve rod 2; the vortex driving part comprises an outer shell, one end of the shell is connected with the valve body 1 through a connecting flange 8, and the other end of the shell is provided with a flange I5; a closing repulsive force coil 3 and a separating repulsive force coil 9 are arranged in the inner cavity of the shell, a space is reserved between the closing repulsive force coil 3 and the separating repulsive force coil 9, and a disc body structure of the repulsive force disc 7 is arranged in the space. A flange II6 is arranged in the shell, and the flange II6 divides the internal cavity of the shell into a mechanical cavity and an electrical cavity; the closing repulsive force coil 3 and the opening repulsive force coil 9 are arranged in the electric cavity.
The repulsive force disc 7 is composed of a disc body structure and a cylindrical structure, and the disc body structure and the cylindrical structure are of an integrated structure. The disc structure is arranged between the closing repulsive force coil 3 and the opening repulsive force coil 9, one end of the disc structure is connected with the valve body 1, the other end of the disc structure is connected with the cylindrical structure, and the cylindrical structure penetrates through the flange II6 and stretches into the mechanical cavity.
The end of the cylindrical structure is connected with a bistable holding device 4. The bistable holding device 4 comprises a connecting disc arranged at the end part of the cylindrical structure, a connecting rod is hinged at the outer circumference of the connecting disc, a spring is hinged at the other end of the connecting rod, and the other end of the spring is connected with the inner wall of the shell; the connecting rod and the spring are provided with N groups, and are uniformly distributed between the outer circumference of the connecting disc and the shell. Preferably, the connecting rod and the spring are provided with 2 groups.
One end of the repulsive force disc 7 is connected with the reversing valve rod 2, and the reversing valve rod 2 penetrates through the reversing valve rod 2 and is inserted into the valve body 1. The valve body 1 has the same structure as a traditional reversing valve, and achieves the reversing function through the forward and backward movement of the reversing valve rod 2.
The principle of the utility model is as follows:
the eddy current driven reversing valve mainly uses the principle of the eddy current effect, namely Lenz's law, namely that the direction of a magnetic field generated by induced current always obstructs the change of magnetic flux of the induced current. As shown in fig. 5, the left side is an energized coil, the right side is a metal disc, along with the change of the capacitor discharge pulse current in the coil, induced current exists in the metal disc, and the direction of a magnetic field generated by the induced current is opposite to that of the coil, so that electromagnetic repulsion force is generated between the coil and the metal disc, and the repulsive force disc is pushed to move with a transmission connecting rod.
Lenz's law, induced current has a direction such that the magnetic field of the induced current always blocks the change in magnetic flux that causes the induced current.
The rapid vortex driven reversing valve works generally as follows: firstly, charging the capacitor, discharging the capacitor, flowing a capacitor discharging pulse current in the coil, generating eddy current by the metal repulsive force disc, generating electromagnetic repulsive force, driving the transmission piece to act, and finally driving the reversing valve to act.
As shown in fig. 1, the energy storage capacitor of the coil current charges and discharges the loop, as shown in fig. 1, L 1 、R 1 Parasitic inductance, resistance, R of bit capacitor C 2 、L 2 Equivalent inductance, resistance, R of bit line C 、L C Is the parasitic inductance and resistance of the repulsive force coil. Fig. 1 may be simplified to fig. 2. In the figure, VT is a controllable thyristor, and most of them use IGBTs. After the capacitor is charged, K is closed, VT is opened, the capacitor C discharges the repulsive force coil, L 1 The capacitor discharge pulse current flows through the capacitor to repel the disc. The diode D acts as a freewheeling function to prevent the coil from charging the capacitor in reverse.
As shown in fig. 3, after the eddy current of the repulsive force coil drives the repulsive force disc to act, because the repulsive force disc and the reversing valve rod are integrally connected, the time and the characteristic of the action of the repulsive force disc are the time and the characteristic of the action of the reversing valve rod, so that the switching action of the opening and closing position of the valve system is realized in a very short time to change an oil path, thereby controlling the action of the hydraulic mechanism and keeping the hydraulic mechanism at the corresponding opening or closing position under the action of the holding device. The diagram is shown as a fast vortex driven reversing valve closing position.
The bistable spring retaining device keeps the springs in compression states at the opening position and the closing position, and the retaining force can be adjusted by adjusting the spring stiffness, the precompression amount and the connecting rod size, so that the opening and closing states of the switch can be effectively maintained.
Example 1:
as shown in fig. 4: the valve body 1 of the reversing valve is connected with the vortex driving system through a connecting flange 8 and a flange II6, and the bistable holding device 4, the repulsive force disk 7 of the moving part and the reversing valve stem 2 are connected together to form a whole. Therefore, after the eddy current driving repulsive force disc 7 of the switching-on repulsive force coil 3 or the switching-off repulsive force coil 9 acts, as the repulsive force disc 7 and the reversing valve rod 2 are connected into a whole, the time and the characteristics of the action of the repulsive force disc 7 are the time and the characteristics of the action of the reversing valve rod 2, the switching action of the switching-on and switching-off position of the reversing valve system is realized in a very short time to change the oil path to play a role in reversing, the reversing of the control valve is controlled to control the action of the hydraulic mechanism, and the hydraulic mechanism is kept at the corresponding switching-off position or switching-on position under the action of the bistable holding device 4.
In fig. 4, the left side is the switching-off state of the reversing valve, the right side is the switching-on state, the switching-off state is switched to the switching-on state, and the switching-on state is switched to the switching-off state.
The closing operation is that the closing repulsive force coil 3 generates vortex to drive the repulsive force disc 7 and the associated reversing valve rod 2 to move at a right high speed together after passing through a large current, and finally reaches the closing position of the right graph, so that the middle oil way is connected with the left oil way, and the closing reversing operation is completed. The opening operation is that the closing repulsive force coil 9 generates vortex to drive the repulsive force disc 7 and the associated reversing valve rod 2 to move leftwards at a high speed after passing through a large current, and finally reaches the opening position of the left graph, so that the middle oil way is connected with the right oil way, and the opening reversing operation is completed.
Claims (7)
1. The quick vortex driving reversing valve is characterized by comprising a reversing valve part and a vortex driving part;
the reversing valve part comprises a valve body (1) and a reversing valve rod (2);
the vortex driving part comprises an outer shell, one end of the shell is connected with the valve body (1) through a connecting flange (8), and the other end of the shell is provided with a flange I (5); be equipped with combined floodgate repulsion coil (3) and separating brake repulsion coil (9) in the casing inner chamber, leave the space between combined floodgate repulsion coil (3) and separating brake repulsion coil (9), the disk body structure of repulsion dish (7) is established in this space, and switching-over valve rod (2) is connected to repulsion dish (7) one end, and switching-over valve rod (2) pass switching-over valve rod (2) and insert in valve body (1).
2. The rapid vortex driving reversing valve according to claim 1, wherein a flange II (6) is arranged in the shell, and the flange II (6) divides the internal cavity of the shell into a mechanical cavity and an electrical cavity; the switching-on repulsive force coil (3) and the switching-off repulsive force coil (9) are arranged in the electric cavity.
3. The rapid vortex driving reversing valve according to claim 2, characterized in that the repulsive force disc (7) consists of a disc body structure and a cylindrical structure, the disc body structure is arranged between the closing repulsive force coil (3) and the opening repulsive force coil (9), one end of the disc body structure is connected with the valve body (1), the other end of the disc body structure is connected with the cylindrical structure, and the cylindrical structure penetrates through the flange II (6) and stretches into the mechanical cavity.
4. A rapid swirl-driven reversing valve according to claim 3, characterized in that the disc structure and the cylindrical structure are of an integrated structure.
5. A rapid swirl-driven reversing valve according to claim 3, characterised in that the end of the cylindrical structure is connected with bistable holding means (4).
6. A rapid eddy current drive reversing valve according to claim 5, wherein the bistable holding means (4) comprises a connecting disc mounted at the end of the cylindrical structure, the connecting disc being hinged at the outer circumference thereof with a connecting rod, the other end of the connecting rod being hinged with a spring, the other end of the spring being connected with the inner wall of the housing; the connecting rod and the spring are provided with N groups, and are uniformly distributed between the outer circumference of the connecting disc and the shell.
7. The rapid vortex driven reversing valve of claim 6, wherein the inner wall of the housing is provided with a connecting ring, the outer surface of the connecting ring is connected with the housing, and the inner surface of the connecting ring is connected with the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223532247.7U CN219159670U (en) | 2022-12-29 | 2022-12-29 | Quick vortex driving reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223532247.7U CN219159670U (en) | 2022-12-29 | 2022-12-29 | Quick vortex driving reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219159670U true CN219159670U (en) | 2023-06-09 |
Family
ID=86636681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223532247.7U Active CN219159670U (en) | 2022-12-29 | 2022-12-29 | Quick vortex driving reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219159670U (en) |
-
2022
- 2022-12-29 CN CN202223532247.7U patent/CN219159670U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103021739B (en) | Hybrid direct-current circuit breaker | |
| KR101044423B1 (en) | Circuit breaker and method for switch the same | |
| CN101399124B (en) | Control circuit for bistable state permanent magnet operating mechanism | |
| CN108133862B (en) | Interlocking vacuum switch and series compensation type current limiting device and method applied by same | |
| CN112071723B (en) | Permanent magnet and repulsion force combined quick switch operating mechanism | |
| Dullni | A vacuum circuit-breaker with permanent magnetic actuator for frequent operations | |
| CN101728140A (en) | High voltage or ultra-high voltage high-current circuit breaker | |
| CN208580703U (en) | Mechanical high-speed switch based on electromagnetic repulsion mechanism | |
| CN201282091Y (en) | High voltage and ultra-high voltage high-current circuit breaker | |
| CN219159670U (en) | Quick vortex driving reversing valve | |
| CN112951651A (en) | Short-circuit current self-driven quick switch | |
| CN205069539U (en) | Communication circuit breaker of good reliability | |
| CN112490070A (en) | Electromagnetic repulsion mechanism based on double-repulsion disc | |
| CN2678102Y (en) | Permanent magnetic electric control mechanism of vacuum circuit breaker | |
| CN214378214U (en) | Pulse type contactor | |
| CN110010406A (en) | A kind of propelling movement type circuit for rapid repulsion mechanism | |
| CN107276042A (en) | Shutting-brake control method based on one or two fusion no-flashy-flow Intelligent power distribution switchs | |
| CN203721619U (en) | Intelligent type horizontal wire incoming and outgoing vacuum circuit breaker | |
| CN208046226U (en) | Combined DC release unit | |
| CN214505376U (en) | Circuit that rebounds is prevented in circuit breaker divide-shut brake | |
| CN102226969B (en) | On-load tapping switch of tandem type composite change-over switch transformer | |
| CN101582338B (en) | Bistable permanent magnetism operating mechanism control circuit | |
| CN212303540U (en) | Medium-voltage self-switching vacuum circuit breaker | |
| CN105513844B (en) | Based on fault current energy and the quick electromagnetic tensile machine of change rate and its application | |
| RU2138876C1 (en) | Electromagnetic drive of high-voltage switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231024 Granted publication date: 20230609 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240117 Granted publication date: 20230609 |