CN115749495A - Rotary valve mechanism of switch cabinet - Google Patents
Rotary valve mechanism of switch cabinet Download PDFInfo
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- CN115749495A CN115749495A CN202211510447.4A CN202211510447A CN115749495A CN 115749495 A CN115749495 A CN 115749495A CN 202211510447 A CN202211510447 A CN 202211510447A CN 115749495 A CN115749495 A CN 115749495A
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Abstract
The invention discloses a rotary valve mechanism of a switch cabinet, and belongs to the technical field of valve mechanisms of switch cabinets. The device comprises an upper metal valve, a lower metal valve, an upper insulation valve plate and a lower insulation valve plate, wherein the upper insulation valve plate and the lower insulation valve plate are respectively fixed on the outer side surfaces of the upper metal valve and the lower metal valve and are used for shielding static contacts, the device also comprises a chute plate for driving the upper metal valve and the lower metal valve to rotate and open, and a link mechanism for driving the chute plate to move upwards. The valve mechanism adopts a driving mode of matching a single connecting rod with a shaft sleeve, and has simple structure, convenient installation and reliable interlocking; a connecting rod mechanism is adopted to drive the chute plate to move upwards, the chute plate is converted into the rotary motion of a valve, a static contact is exposed, and the automatic reset is realized by adopting a tension spring; the valve assembly combining the upper and lower insulating valve plates and the upper and lower metal valves is applied, so that the space of a handcart room of the switch cabinet can be effectively utilized, the material is saved, the cost is reduced, meanwhile, the insulating property of the switch cabinet is improved, and the reliability and the safety of the switch equipment in operation are improved.
Description
Technical Field
The invention relates to a rotary valve mechanism of a switch cabinet, and belongs to the technical field of valve mechanisms of switch cabinets.
Background
The switch cabinet is used in the power generation, transmission, distribution and electric energy conversion processes of a power system, and is used for opening, closing, controlling and protecting power equipment. The main electrical elements in the switch cabinet comprise a handcart room, a bus contact, an outgoing line contact, a cable room, an instrument room and the like. The handcart room is generally arranged in the middle of the front of the switch cabinet, high-strength rails are mounted on the left side and the right side of the handcart room, the handcart type circuit breaker is inserted into the handcart room through the rails, and a moving contact of the handcart type circuit breaker is meshed with a static contact in a contact box (the upper static contact and the lower static contact in the contact box are respectively a bus contact at the upper part and an outlet contact at the lower part). In order to increase the safety, a valve mechanism needs to be installed on the outer side of the contact, the valve can play a role in shielding the static contact after the handcart type circuit breaker is pulled out and before the handcart type circuit breaker is pushed in, the requirement on the insulation distance of each voltage grade can be met, and the problem that a human body touches a high-voltage electrified body due to high-voltage electrification of the upper end is prevented. The current valve mechanism adopts many connecting rods translation slidingtype structure, and many connecting rods drive structure is more complicated, and the installation is inconvenient, and interlocking reliability remains to be improved.
Therefore, compared with the existing mechanism, the rotary valve mechanism of the switch cabinet is designed to have a simple and reliable rotary motion interlocking mode and an automatic tension spring resetting structure, so that the valve mechanism can operate more safely and reliably.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a cubical switchboard rotation type valve mechanism, it has solved the problem that present cubical switchboard valve mechanism has the structure complicacy.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the first scheme is as follows: a rotary valve mechanism of a switch cabinet comprises an upper metal valve and a lower metal valve which are hinged and installed in the switch cabinet through a pin shaft, wherein the outer side surfaces of the upper metal valve and the lower metal valve are respectively fixed with an upper insulating valve plate and a lower insulating valve plate which are used for shielding static contacts;
the two sides of the upper metal valve and the lower metal valve are respectively fixed with a driving plate, the middle part of the driving plate is hinged with a pin shaft fixed on the left side plate and the right side plate of the switch cabinet, and the driving plate is provided with a driving kidney-shaped hole extending along the radial direction of the pin shaft;
the upper eccentric pin shaft and the lower eccentric pin shaft are respectively positioned at two sides of the pin shaft, when the sliding chute plate moves upwards, the upper eccentric pin shaft drives the upper metal valve to rotate upwards, and the lower eccentric pin shaft drives the lower metal valve to rotate downwards;
the connecting rod mechanism comprises a connecting rod, a positioning support, a fixing plate and a shaft sleeve, one end of the connecting rod is hinged to the positioning support and fixed in the switch cabinet through the positioning support, the other end of the connecting rod is provided with a hinged waist-shaped hole, the hinged waist-shaped hole end of the connecting rod is downwards inclined and hinged to the bottom of the chute plate, the fixing plate is fixed on the handcart, the shaft sleeve in contact with the lower edge of the connecting rod is arranged on the fixing plate, and when the fixing plate moves forwards along with the handcart, the shaft sleeve pushes the hinged waist-shaped hole end of the connecting rod to upwards deflect so as to drive the chute plate to move upwards.
Scheme II: on the basis of the first scheme, in order to realize the inserted front section test position of the handcart, the upper metal valve and the lower metal valve are not opened; only after the handcart is further inserted, the upper metal valve and the lower metal valve are opened to form a two-stage effect.
Preferably, the lower edge of the connecting rod is sequentially provided with a horizontal section and an inclined section from the entrance end, the shaft sleeve does not push the connecting rod to deflect upwards in the horizontal section, and the shaft sleeve gradually pushes the connecting rod to deflect upwards in the inclined section.
The third scheme is as follows: on the basis of the first scheme, in order to further optimize the occupied space of the upper metal valve and the lower metal valve and because the contact box protrudes forwards, the upper metal valve and the lower metal valve need to adopt a rotating rectangular frame structure to shield the contact box, and therefore the upper metal valve and the lower metal valve are formed by bending metal plates.
Preferably, the upper metal valve and the lower metal valve both adopt a rectangular frame structure with one side opened, wherein two ends of a metal plate are bent towards the same side for 90 degrees, an upper insulation valve plate and a lower insulation valve plate are fixed in the middle of the metal plate, and two bent sides of the metal plate are hinged between the left side plate and the right side plate of the switch cabinet through a driving plate and a pin shaft.
And the scheme is as follows: on the basis of the first scheme, in order to conveniently install and replace the tension spring, a tension spring support is designed.
Preferably, one end of the tension spring is hooked at the bottom of the chute plate, and the other end of the tension spring is hooked on a tension spring support through hole fixed in the switch cabinet.
And a fifth scheme: on the basis of the first scheme, the strength of the pin fixing structure is optimized.
Preferably, the end part of the pin shaft is fixed on a pin shaft plate, and the pin shaft plate is fixed on the left side plate and the right side plate of the switch cabinet. Through the large-area pin shaft plate fixing structure, the side plate of the switch cabinet is not easy to deform.
The beneficial effects of the invention are:
(1) The valve mechanism adopts a driving mode of matching a single connecting rod with a shaft sleeve, and has simple structure, convenient installation and reliable interlocking;
(2) A sliding chute plate arranged on the side face is driven by a connecting rod mechanism to move upwards, the sliding chute plate is converted into rotary motion of a valve, a static contact is exposed, and automatic reset is realized by a downward tension spring;
(3) The valve assembly combining the upper and lower insulating valve plates and the upper and lower metal valves is applied, so that the space of a handcart room of the switch cabinet can be effectively utilized, the material is saved, the cost is reduced, meanwhile, the insulating property of the switch cabinet is improved, and the reliability and the safety of the switch equipment in operation are improved.
Drawings
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a partially enlarged view of a connection structure of a chute plate and a pin;
FIG. 4 is a schematic structural view of a linkage mechanism;
FIG. 5 is a schematic top view of the present invention;
fig. 6 is a schematic view of a connection structure of the chute plate and the tension spring.
In the figure: 1. a pin shaft; 101. a pin shaft plate; 2. an upper metal valve; 3. a lower metal valve; 4. an upper insulating shutter plate; 5. a lower insulating shutter plate; 6. a chute plate; 601. an eccentric pin shaft; 602. a chute; 7. a drive plate; 701. a drive kidney-shaped hole; 8. a tension spring; 801. a tension spring bracket; 9. a connecting rod; 901. a hinged waist-shaped hole; 902. a horizontal segment; 903. an inclined section; 904. a circular arc section; 10. positioning the bracket; 11. a fixing plate; 12. a shaft sleeve; 13. and a connecting rod pin shaft.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easily understood, the invention is further described with reference to the following embodiments.
Example 1
As shown in fig. 1, the rotary valve mechanism of the switch cabinet comprises an upper metal valve 2 and a lower metal valve 3 which are hinged and installed in the switch cabinet through a pin shaft 1, wherein an upper insulating valve plate 4 and a lower insulating valve plate 5 which are used for shielding static contacts are respectively fixed on the outer side surfaces of the upper metal valve 2 and the lower metal valve 3, the upper metal valve 2, the lower metal valve 3, the upper insulating valve plate 4 and the lower insulating valve plate 5 form a valve assembly which rotates, a chute plate 6 which drives the upper metal valve 2 and the lower metal valve 3 to rotate and open, and a link mechanism which drives the chute plate 6 to move upwards.
As shown in fig. 1 and 2, drive plates 7 are respectively riveted and fixed on two sides of the upper metal shutter 2 and the lower metal shutter 3, the middle parts of the drive plates 7 are hinged to pin shafts 1 fixed on left and right side plates of the switch cabinet, and drive waist-shaped holes 701 extending along the radial direction of the pin shafts 1 are formed in the drive plates 7.
As shown in fig. 1 and fig. 3, an upper eccentric pin 601 and a lower eccentric pin 601 are welded and fixed on the chute board 6, an upper vertical chute 602 and a lower vertical chute 602 are formed in the chute board 6, the two chute boards 6 which are symmetrically arranged are respectively installed at the upper pin 1 and the lower pin 1 at the corresponding side through the vertical chutes 602, the eccentric pin 601 on the chute board 6 is inserted into the driving kidney-shaped hole 701 of the driving board 7 at the corresponding position, the chute board 6 is connected with the switch cabinet at the lower side through the tension spring 8, wherein the upper eccentric pin 601 and the lower eccentric pin 601 are respectively located at two sides of the pin 1, when the chute board 6 moves upwards, the upper metal valve 2 is driven to rotate upwards by the upper eccentric pin 601, and the lower metal valve 3 is driven to rotate downwards by the lower eccentric pin 601.
As shown in fig. 1 and 4, the link mechanism includes a connecting rod 9, a positioning bracket 10, a fixing plate 11, and a shaft sleeve 12, one end of the connecting rod 9 is hinged to the positioning bracket 10 through a connecting rod pin 13, and is fixed in the switch cabinet through the positioning bracket 10, the other end of the connecting rod 9 is provided with a hinged waist-shaped hole 901, the end of the hinged waist-shaped hole 901 of the connecting rod 9 is tilted downward to be hinged to the bottom of the chute plate 6, the fixing plate 11 is fixed on the handcart, the fixing plate 11 is provided with the shaft sleeve 12 contacting with the lower edge of the connecting rod 9, when the fixing plate 11 moves forward along with the handcart, the shaft sleeve 12 pushes the end of the hinged waist-shaped hole 901 of the connecting rod 9 to deflect upward, so as to drive the chute plate 6 to move upward.
As shown in fig. 1 to 6, the working principle is as follows:
(1) When the handcart is pushed into a working position from a test position, the shaft sleeves 12 fixed on the fixing plates 11 on the left side and the right side of the handcart are firstly contacted with the connecting rod 9 and then move forwards in a manner of clinging to the lower edge of the connecting rod 9, so that the connecting rod 9 makes upward deflection motion by taking a hinge point with the positioning bracket 10 as a fulcrum.
(2) The connecting rod 9 drives the chute plate 6 to move vertically upward, that is, the pin shaft 1 for hinging the upper metal valve 2 and the lower metal valve 3 slides relatively in the two chutes 602 of the chute plate 6, and the chute plate 6 moves upward.
(3) The eccentric pin shaft 601 on the sliding chute plate 6 slides in the driving kidney-shaped hole 701 on the driving plate 7, and the eccentric pin shafts 601 are dispersed on two sides of the pin shaft 1 (as in fig. 1, the lower eccentric pin shaft 601 is positioned on the left side in the figure, and the upper eccentric pin shaft 601 is positioned on the right side of the pin shaft 1), so that the upper and lower metal valves 3 can deflect in opposite directions correspondingly, when the sliding chute plate 6 moves upwards, the upper eccentric pin shaft 601 drives the upper metal valve 2 to rotate upwards, the lower eccentric pin shaft 601 drives the lower metal valve 3 to rotate downwards, and after the valve assembly is completely opened, a moving contact on the handcart circuit breaker extends into a contact box to be meshed with a fixed contact.
(4) When the handcart is pushed back to the test position from the working position, the valve mechanism moves reversely, the connecting rod 9 is reset through the tension spring 8 acting downwards under the condition that the handcart is not pushed by the fixing plate 11 and the shaft sleeve 12, the upper valve assembly and the lower valve assembly return to the initial closing position to shield a static contact in a contact box arranged on the middle partition plate, and the insulating valve plate is arranged on the valve, so that the insulating distance requirement of a certain voltage grade is met, and the situation that a human body touches a high-voltage electrified body due to high-voltage electrification of the upper end is prevented.
The valve mechanism adopts a driving mode that the single connecting rod 9 is matched with the shaft sleeve 12, and has simple structure, convenient installation and reliable interlocking; a sliding chute plate 6 arranged on the side surface is driven by a connecting rod mechanism to move upwards and is converted into rotary motion of a valve, a static contact is exposed, and automatic reset is realized by a downward tension spring 8;
the valve assembly combining the upper and lower insulating valve plates 5 and the upper and lower metal valves 3 is applied, so that the space of a handcart room of the switch cabinet can be effectively utilized, the material is saved, the cost is reduced, meanwhile, the insulating property of the switch cabinet is improved, and the reliability and the safety of the switch equipment in operation are improved.
Example 2
As shown in fig. 4, the other structure is the same as that of embodiment 1, the lower edge of the connecting rod 9 is provided with a horizontal section 902 and an inclined section 903 in sequence from the entrance end, a circular section 904 is arranged between the horizontal section 902 and the inclined section 903 for transition, the sleeve 12 does not push the connecting rod 9 to deflect upwards at the horizontal section 902, and the sleeve 12 gradually pushes the connecting rod 9 to deflect upwards at the inclined section 903.
In the front section test position where the handcart is inserted, the shaft sleeve 12 is positioned in the circular arc section 904, and the upper metal valve 2 and the lower metal valve 3 are not opened; only after the handcart is further inserted, the upper metal valve 2 and the lower metal valve 3 are opened, and a two-section effect is formed.
Example 3
As shown in fig. 5, the other structures are the same as those of embodiment 1, in order to further optimize the occupied space of the upper metal shutter 2 and the lower metal shutter 3, and since the contact box protrudes forward, the protruding contact box can be shielded by the upper metal shutter 2 and the lower metal shutter 3 if a rotating rectangular frame structure is adopted, and therefore, a metal plate bending structure is adopted. In fig. 5, the contact box is arranged in a concave space enclosed by the upper metal valve 2 and the lower metal valve 3.
The upper metal valve 2 and the lower metal valve 3 are both of rectangular frame structures with one side opened, wherein the rectangular frame structures are formed by bending two ends of a metal plate for 90 degrees towards the same side, an upper insulation valve plate 4 and a lower insulation valve plate 5 are fixed in the middle of the metal plate, and the two bent sides of the metal plate are hinged and installed between left and right side plates of the switch cabinet through a driving plate 7 and a pin shaft 1.
The upper metal valve 2 and the lower metal valve 3 are both of rectangular frame structures with openings on one sides, and can be arranged close to the inner wall of the cabinet body, so that the influence on the use space of internal electrical elements is reduced.
Example 4
As shown in fig. 4 and 6, the other structure is the same as that of embodiment 1, and a tension spring holder 801 is provided for facilitating attachment and replacement of the tension spring 8.
One end of the tension spring 8 is hooked at the bottom of the chute plate 6, and the other end is hooked on a through hole of a tension spring bracket 801 fixed in the switch cabinet. Extension spring 8 uses for a long time and can lead to metal fatigue, can conveniently change extension spring 8 through the through-hole.
Example 5
As shown in fig. 3, the other structures are the same as those of embodiment 1, and the problem of strength of the fixing structure of the pin 1 is optimized.
The end part of the pin shaft 1 is welded and fixed on a pin shaft plate 101, and the pin shaft plate 101 is fixed on the left side plate and the right side plate of the switch cabinet. Through the large-area pin shaft plate 101 fixing structure, the side plate of the switch cabinet is not easy to deform.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the present invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A rotary valve mechanism of a switch cabinet comprises an upper metal valve and a lower metal valve which are hinged and installed in the switch cabinet through a pin shaft, wherein the outer side surfaces of the upper metal valve and the lower metal valve are respectively fixed with an upper insulation valve plate and a lower insulation valve plate which are used for shielding static contacts;
the two sides of the upper metal valve and the lower metal valve are respectively fixed with a driving plate, the middle part of the driving plate is hinged with a pin shaft fixed on the left side plate and the right side plate of the switch cabinet, and the driving plate is provided with a driving waist-shaped hole extending along the radial direction of the pin shaft;
the upper eccentric pin shaft and the lower eccentric pin shaft are respectively positioned on two sides of the pin shaft, when the sliding chute plate moves upwards, the upper eccentric pin shaft drives the upper metal valve to rotate upwards, and the lower eccentric pin shaft drives the lower metal valve to rotate downwards;
the connecting rod mechanism comprises a connecting rod, a positioning support, a fixing plate and a shaft sleeve, one end of the connecting rod is hinged to the positioning support and fixed in the switch cabinet through the positioning support, the other end of the connecting rod is provided with a hinged waist-shaped hole, the hinged waist-shaped hole end of the connecting rod is downwards inclined and hinged to the bottom of the chute plate, the fixing plate is fixed on the handcart, the shaft sleeve in contact with the lower edge of the connecting rod is arranged on the fixing plate, and when the fixing plate moves forwards along with the handcart, the shaft sleeve pushes the hinged waist-shaped hole end of the connecting rod to upwards deflect so as to drive the chute plate to move upwards.
2. The rotary shutter mechanism for switchgear cabinets of claim 1, wherein the lower edge of the link is sequentially provided with a horizontal section and an inclined section from the entrance end, the bushing does not push the link to deflect upward at the horizontal section, and the bushing gradually pushes the link to deflect upward at the inclined section.
3. The rotary shutter mechanism of switch cabinet as claimed in claim 1, wherein the upper and lower metal shutters are formed by bending two ends of a metal plate at 90 ° to the same side to form a rectangular frame structure with one side open, the middle part of the metal plate is fixed with an upper insulating shutter plate and a lower insulating shutter plate, and the bent two sides of the metal plate are hinged and installed between the left and right side plates of the switch cabinet through the driving plate and the pin shaft.
4. The rotary shutter mechanism for switch cabinets of claim 1, wherein one end of the tension spring is hooked on the bottom of the chute plate, and the other end is hooked on a tension spring support through hole fixed in the switch cabinet.
5. The rotary shutter mechanism for switch cabinets of claim 1, wherein the ends of the pins are secured to pin plates secured to the left and right side plates of the switch cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211510447.4A CN115749495A (en) | 2022-11-29 | 2022-11-29 | Rotary valve mechanism of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211510447.4A CN115749495A (en) | 2022-11-29 | 2022-11-29 | Rotary valve mechanism of switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115749495A true CN115749495A (en) | 2023-03-07 |
Family
ID=85340154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211510447.4A Pending CN115749495A (en) | 2022-11-29 | 2022-11-29 | Rotary valve mechanism of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115749495A (en) |
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2022
- 2022-11-29 CN CN202211510447.4A patent/CN115749495A/en active Pending
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