Disconnecting link type double-contact hard pressing plate
By designing a knife gate double-contact hard pressure plate, the connection and disconnection state between the conductive blade and the connection terminal are used to realize the input and exit of the hard pressure plate. The monitoring controller monitors the status in real time, the problem of poor loading and withdrawal control of the hard pressure plate in the existing technology is solved, and the operating reliability of the hard pressure plate is improved.
Patent Information
- Application Number
- CN202421726914.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing hard pressure plate dropout control is poor, resulting in malfunction of protection, resulting in abnormal shutdown of the generator set and other unsafe events such as output reduction.
A knife gate type double contact hard pressure plate is designed, through the communication and disconnection state between the first conductive blade and the second conductive blade and the connection terminal, the input and exit of the hard pressure plate is realized, and electrically connected to the monitoring controller through the second connecting terminal, so as to monitor the withdrawal state in real time.
It effectively avoids the incorrect operation of the hard pressure plate or abnormal state, ensures the normal operation of the hard pressure plate, and reduces abnormal shutdown and output reduction events of the generator set.
Smart Images
Figure CN222826974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power protection, in particular to a knife switch type double-contact hard pressure plate. Background Art
[0002] The hard pressure plate, also known as the protection pressure plate, is a connection structure used in power systems to connect the protection device in the protection cabinet to the external secondary circuit wiring. Its closing and opening represent the switching on and off. The hard pressure plate is generally divided into functional pressure plates and output pressure plates. The functional pressure plate is a selection control method for the protection function. Its switching on and off affects the realization of the protection function or the realization of the protection tripping output.
[0003] When the protection pressure plate is not correctly put in or withdrawn, it will cause the protection to malfunction, resulting in abnormal shutdown of the generator set, reduced output and other unsafe events, which seriously threaten the normal production of the power generation company. The existing scheme does not have a good way to control the putting in or withdrawing of the protection pressure plate. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a knife switch type double-contact hard pressure plate.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A knife switch type double-contact hard pressure plate comprises a base, two first connecting terminals located on the base, two second connecting terminals located on the base and a connecting blade assembly; the two first connecting terminals are used to be electrically connected to the hard pressure plate throw-in and retract circuit; the two second connecting terminals are used to be electrically connected to the monitoring controller of the hard pressure plate; the connecting blade assembly comprises a first conductive blade and a second conductive blade; when the first conductive blade is connected to the two first connecting terminals so that the hard pressure plate is thrown in, the second conductive blade is connected to the two second connecting terminals; when the first conductive blade is disconnected from the two first connecting terminals so that the hard pressure plate is retracted, the second conductive blade is disconnected from the second connecting terminal.
[0007] Preferably, the connecting blade assembly also includes an insulating part; the insulating part connects one end of the first conductive blade and the second conductive blade; one end of the first conductive blade away from the insulating part is rotatably connected to the base, and one end of the second conductive blade away from the insulating part is rotatably connected to the base, and the rotation centers of the first conductive blade and the second conductive blade coincide.
[0008] Preferably, it further comprises a protective cover; the protective cover is engaged with the base and applies pressure to the connecting blade assembly to limit the rotation of the connecting blade assembly.
[0009] Preferably, a first sinking groove is provided on the base, and a connecting portion is protrudingly provided on the inner wall surface of the first sinking groove; and a groove which is engaged with the connecting portion is provided on the outer wall surface of the protective cover.
[0010] Preferably, the insulating part is made of rubber material; a second recessed groove is provided on the insulating part; the second recessed groove extends from the first conductive blade toward the second conductive blade; and the protective cover is snapped into the second recessed groove.
[0011] Preferably, a first accommodating groove and a second accommodating groove are arranged on the base at intervals; the first accommodating groove is used to accommodate the first conductive blade, and the second accommodating groove is used to accommodate the second conductive blade.
[0012] Preferably, the first connecting terminal is located at the bottom or side of the first conductive blade, and / or the second connecting terminal is located at the bottom or side of the second conductive blade.
[0013] Preferably, it further comprises a locking structure; the locking structure is arranged on the insulating part and can be expanded, threaded or snap-connected with the base.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] The above technical solution provides a knife switch type double-contact hard pressure plate. When the first conductive blade is connected to the first connection terminal, the hard pressure plate is put into operation, and at the same time, the second conductive blade is connected to the second connection terminal. When the first conductive blade disconnects the first connection terminal, the hard pressure plate is withdrawn, and at the same time, the second conductive blade disconnects the second connection terminal, so that the state between the first conductive blade and the first connection terminal (connected or disconnected) and the state between the second conductive blade and the second connection terminal (connected or disconnected) remain consistent, and the second connection terminal is used to be electrically connected to the monitoring controller of the hard pressure plate, so that the monitoring controller of the hard pressure plate can monitor the investment and withdrawal status of the hard pressure plate in real time, to avoid the technical personnel being unable to discover in time when the hard pressure plate is misoperated or the investment and withdrawal status is abnormal. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model.
[0018] Figure 2 for Figure 1 Schematic diagram of the explosion.
[0019] Figure 3 for Figure 1 Schematic cross-section diagram.
[0020] Figure 4 for Figure 3 A magnified schematic diagram of position A in the middle.
[0021] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present utility model.
[0022] Figure 6 for Figure 5 Schematic diagram of the explosion.
[0023] Figure 7 for Figure 6 A magnified schematic diagram of position B in the middle.
[0024] Description of reference numerals:
[0025] 1. Base; 10. Articulated seat; 101. Articulated shaft; 11. First recessed groove; 12. Connecting portion; 13. First accommodating groove; 14. Second accommodating groove; 2. First connecting terminal; 3. Second connecting terminal; 4. Connecting blade assembly; 41. First conductive blade; 42. Second conductive blade; 43. Insulating portion; 431. Second recessed groove; 4311. Arc guide surface; 5. Protective cover; 50. Groove; 51. Arc surface. DETAILED DESCRIPTION
[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] Embodiment 1
[0030] See also Figures 1 to 4 The embodiment of the utility model provides a knife switch type double-contact hard pressure plate, including a base 1, two first connecting terminals 2 located on the base 1, two second connecting terminals 3 located on the base 1 and a connecting blade assembly 4.
[0031] Specifically, the first connection terminal 2 and the second connection terminal 3 are both fixedly mounted on the base 1, and the two first connection terminals 2 are used to be electrically connected to the hard pressure plate insertion and withdrawal circuit; the two second connection terminals 3 are used to be electrically connected to the monitoring controller of the hard pressure plate. The connecting blade assembly 4 includes a first conductive blade 41 and a second conductive blade 42; the first conductive blade 41 connects the two first connection terminals 2 so that when the hard pressure plate is inserted, the second conductive blade 42 connects the two second connection terminals 3; the first conductive blade 41 disconnects the two first connection terminals 2 so that when the hard pressure plate is withdrawn, the second conductive blade 42 disconnects the second connection terminal 3. That is, the state between the first conductive blade 41 and the first connection terminal 2 (connected or disconnected) and the state between the second conductive blade 42 and the second connection terminal 3 (connected or disconnected) are consistent, so that the monitoring controller of the hard pressure plate can monitor the insertion and withdrawal state of the hard pressure plate in real time, and avoid the technicians from timely discovering the misoperation of the insertion and withdrawal of the hard pressure plate or the abnormal insertion and withdrawal state.
[0032] In order to facilitate technicians to control the connecting blade assembly 4, in the present embodiment, the connecting blade assembly 4 also includes an insulating part 43; the insulating part 43 connects one end of the first conductive blade 41 and the second conductive blade 42; the end of the first conductive blade 41 away from the insulating part 43 is rotatably connected to the base 1, and the end of the second conductive blade 42 away from the insulating part 43 is rotatably connected to the base 1, and the rotation centers of the first conductive blade 41 and the second conductive blade 42 coincide. When it is necessary to control the insertion and withdrawal of the knife switch type double-contact hard pressure plate, the operator applies force to the insulating part 43 to drive the first conductive blade 41 and the second conductive blade 42 to rotate to switch the state.
[0033] Specifically, the upper end of the base 1 is provided with a hinge seat 10 protruding therefrom, and a hinge shaft 101 is detachably mounted on the hinge seat 10, one end of the first conductive blade 41 and one end of the second conductive blade 42 are both rotatably mounted on the hinge shaft 101, the insulating portion 43 is located on a side away from the hinge shaft 101, and the first conductive blade 41 and the second conductive blade 42 are both fixedly mounted on the insulating portion 43. Of course, in other embodiments, the insulating portion 43 may also be provided with a plug-in slot corresponding to the first conductive blade 41 and the second conductive blade 42, so that the first conductive blade 41 and the second conductive blade 42 are plugged into the insulating portion 43.
[0034] In order to prevent foreign matter from affecting the conduction of the first conductive blade 41 and the second conductive blade 42 when the knife switch type double contact hard pressure plate is put into use, in this embodiment, the knife switch type double contact hard pressure plate further includes a protective cover 5.
[0035] Specifically, the protective cover 5 is snap-fitted to the base 1 and applies pressure to the connecting blade assembly 4 to limit the rotation of the connecting blade assembly 4, thereby preventing the first conductive blade 41 from being separated from the first connecting terminal 2 under the action of external force, and preventing the second conductive blade 42 from being separated from the second connecting terminal 3 under the action of external force.
[0036] Further, the base 1 is provided with a first sink 11, and a connecting portion 12 is protruding from the inner wall of the first sink 11, and the connecting portion 12 can be arranged along the inner wall of the first sink 11; correspondingly, the outer wall of the protective cover 5 is provided with a groove 50 engaged with the connecting portion 12, and the groove 50 is also arranged along the outer wall of the protective cover 5. Of course, in other embodiments, the connecting portion 12 can also be arranged locally on the inner wall of the first sink 11.
[0037] Furthermore, the connecting portion 12 is configured as an arc-shaped injection molded part or an elastic part, so that it can be deformed to a certain extent when squeezed by the protective cover 5, so as to facilitate the disassembly and assembly of the protective cover 5.
[0038] In order to facilitate the assembly of the protective cover 5 and the base 1 , in this embodiment, a circular arc surface 51 is provided on one side of the lower end of the protective cover 5 facing the connecting portion 12 .
[0039] In other embodiments, a locking structure is also included. The locking device can be arranged on the insulating part 43, and can be expanded, threaded or snap-connected with the base 1. For example, a bolt is penetrated through the insulating part 43, and the bolt is threadedly connected to the base 1; or a flexible part is arranged at the lower end of the insulating part 43, and the flexible part can be snapped into a hole arranged on the base 1; or a snap that cooperates with a slot on the base 1 is arranged on the insulating part 43, which is not shown in the figure.
[0040] In other embodiments, the protective cover 5 may also be hinged on the hinge shaft 101, so that the protective cover 5 rotates synchronously with the first conductive blade 41 and the second conductive blade 42, and the protective cover 5 is prevented from being lost when the first conductive blade 41 disconnects the first connection terminal 2 and the second conductive blade 42 disconnects the second connection terminal 3. This is not shown in the figure.
[0041] Embodiment 2
[0042] See also Figures 5 to 7 Based on the above-mentioned first embodiment, the difference of this embodiment is that: the base 1 is provided with a first receiving groove 13 and a second receiving groove 14 at intervals; the first receiving groove 13 is used to receive the first conductive blade 41, and the second receiving groove 14 is used to receive the second conductive blade 42, so that the base 1 can support the first conductive blade 41 and the second conductive blade 42 from the side, further increasing the stability of the first conductive blade 41 and the second conductive blade 42. In addition, the first connecting terminal 2 can be located at the bottom or side of the first conductive blade 41, and similarly, the second connecting terminal 3 can also be located at the bottom or side of the second conductive blade 42.
[0043] In this embodiment, the insulating portion 43 is made of rubber material. A second recessed groove 431 is provided on the insulating portion 43; the second recessed groove 431 extends from the first conductive blade 41 to the second conductive blade 42; the protective cover 5 is clamped in the second recessed groove 431, and on the one hand, the first conductive blade 41 and the second conductive blade 42 can be pressed by the protective cover 5, and on the other hand, the elastic force of the insulating portion 43 is further used to clamp the protective cover 5, thereby increasing the stability of the installation of the protective cover 5.
[0044] Furthermore, in order to facilitate the installation of the protective cover 5 , an arc guide surface 4311 is provided at the upper end of the second sink groove 431 .
[0045] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.
Claims
1. A knife switch type double contact hard pressure plate, characterized in that: It comprises a base (1), two first connection terminals (2) located on the base (1), two second connection terminals (3) located on the base (1) and a connection blade assembly (4); The two first connection terminals (2) are used to be electrically connected to the hard pressing plate throw-in / out circuit; the two second connection terminals (3) are used to be electrically connected to the monitoring controller of the hard pressing plate; The connecting blade assembly (4) comprises a first conductive blade (41) and a second conductive blade (42); The first conductive blade (41) is connected to the two first connection terminals (2) so that when the hard pressing plate is put into operation, the second conductive blade (42) is connected to the two second connection terminals (3); When the first conductive blade (41) disconnects the two first connection terminals (2) to allow the hard pressure plate to withdraw, the second conductive blade (42) disconnects the second connection terminal (3).
2. A knife switch type double contact hard pressure plate according to claim 1, characterized in that: The connecting blade assembly (4) further comprises an insulating portion (43); The insulating portion (43) connects one end of the first conductive blade (41) and the second conductive blade (42); One end of the first conductive blade (41) away from the insulating portion (43) is rotatably connected to the base (1), and one end of the second conductive blade (42) away from the insulating portion (43) is rotatably connected to the base (1), and the rotation centers of the first conductive blade (41) and the second conductive blade (42) coincide.
3. A knife switch type double contact hard pressure plate according to claim 2, characterized in that: Also includes a protective cover (5); The protective cover (5) is snap-connected with the base (1) and applies pressure to the connecting blade assembly (4) to limit the rotation of the connecting blade assembly (4).
4. A knife switch type double contact hard pressure plate according to claim 3, characterized in that: The base (1) is provided with a first sinking groove (11), and the inner wall surface of the first sinking groove (11) is protrudingly provided with a connecting portion (12); The outer wall surface of the protective cover (5) is provided with a groove (50) which is engaged with the connecting portion (12).
5. A knife switch type double contact hard pressure plate according to claim 3 or 4, characterized in that: The insulating part (43) is made of rubber material; The insulating portion (43) is provided with a second recessed groove (431); the second recessed groove (431) extends from the first conductive blade (41) toward the second conductive blade (42); The protective cover (5) is snap-fitted into the second sink (431).
6. A knife switch type double contact hard pressure plate according to claim 2, characterized in that: The base (1) is provided with a first accommodating groove (13) and a second accommodating groove (14) at intervals; The first accommodating groove (13) is used to accommodate the first conductive blade (41), and the second accommodating groove (14) is used to accommodate the second conductive blade (42).
7. A knife switch type double contact hard pressure plate according to claim 6, characterized in that: The first connecting terminal (2) is located at the bottom or side of the first conductive blade (41). and / or, The second connecting terminal (3) is located at the bottom or side of the second conductive blade (42).
8. The knife switch type double contact hard pressure plate according to claim 2, characterized in that: Also includes a locking structure; The locking structure is arranged on the insulating portion (43) and can be expanded, threaded or snap-connected to the base (1).