Synchronization detection circuit suitable for high-power contactor with multiple contacts connected in parallel
By using an oscilloscope to detect the contact time difference in a high-power contactor with multiple contacts connected in parallel, the problem of synchronizing parallel contacts was solved, and stable operation of the contactor under high current conditions was achieved.
Patent Information
- Application Number
- CN202422827286.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In the existing technology, high-power contactors with multiple contacts connected in parallel cannot effectively determine the synchronicity of the parallel contacts, resulting in unstable operation of the contactor under high current conditions.
A synchronization detection circuit using a multi-contact contactor is employed. By connecting each contact group to a different voltage and using multiple connection terminals of an oscilloscope to detect the contact time difference of the contacts, synchronization detection is achieved.
Rapidly detecting the synchronization of parallel contacts ensures stable operation of the contactor under high current conditions, improving the reliability and stability of the product.
Smart Images
Figure CN223526477U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of synchronism detection circuit suitable for the parallel connection of multiple contact head high-power contactor. BACKGROUND
[0002] With the growth of industrial and residential electric load driving the continuous expansion of power grid scale, power system expands through itself and interconnection, system load is increasingly larger, current passing under normal circumstances increases, due to the bottleneck problem of contactor contact material and structure is difficult to break through, single contact head contactor is difficult to meet the demand of increasing power grid capacity and new energy field development, under the premise of not changing material and mechanism, improve the capacity of contactor, it is more common scheme to operate multiple contact head in parallel connection.Therefore the synchronism of parallel connection contact head is crucial.But in the current solution, as shown in Figure 1 L1 T1 in contactor, two contact heads in parallel connection mode are used, and the second phase L2 T2, the third phase L3 T3, each phase static contact is energized, and the first phase, the second phase and the third phase are connected with oscilloscope corresponding channel 1, 2 and 3 respectively, so that it can be judged which way closes first, but it cannot be judged which one of the two contact heads in parallel connection in the first phase closes first.
[0003] In view of the above-mentioned defects, the present applicant actively researches and innovates to create a new structure of the synchronism detection circuit suitable for the parallel connection of multiple contact head high-power contactor, so that it has more industrial utilization value. CONTENT OF UTILITY MODEL
[0004] To solve the above technical problems, the purpose of the utility model is to provide a kind of synchronism detection circuit suitable for the parallel connection of multiple contact head high-power contactor.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0006] A kind of synchronism detection circuit suitable for the parallel of multi-contact high-power contactor, including multi-contact contactor, first contact group, second contact group and third contact group are equipped on the multi-contact contactor, they are same structure, the first moving contact of the first contact group is connected with DC8V, the second moving contact of the first contact group is connected with DC12V, the first moving contact of the second contact group is connected with DC8V, the second moving contact of the second contact group is connected with DC12V, the first moving contact of the third contact group is connected with DC8V, the second moving contact of the third contact group is connected with DC12V, the L end and T end of the first contact group, second contact group and third contact group are connected with the corresponding connecting end of display device respectively, the display device is connected with DC24V by three same resistance in series, DC24V is connected with the first moving contact by two resistances in series, DC24V is connected with the second contact by a resistance.
[0007] Preferably, the synchronism detection circuit suitable for the parallel of multi-contact high-power contactor, the display device is oscilloscope.
[0008] Preferably, the synchronism detection circuit suitable for the parallel of multi-contact high-power contactor, the oscilloscope has at least 6 corresponding connecting ends of first contact group, second contact group and third contact group.
[0009] Preferably, the synchronism detection circuit suitable for the parallel of multi-contact high-power contactor, the first contact group includes a pair of left static contact one and left moving contact one, first pair of right static contact one and right moving contact one, a pair of left static contact two and left moving contact two and a pair of right static contact two and right moving contact two.
[0010] Wherein, left moving contact one and left moving contact two are connected with DC8V, right moving contact one and right moving contact two are connected with DC12V.
[0011] By the above scheme, the utility model at least has following advantages:
[0012] The utility model can realize the detection of different contact reaction time by the feedback of different contacts according to different contacts and different voltages, so as to quickly detect whether there is simultaneous contact, and ensure the stability of product.
[0013] The above description is only the summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following preferred embodiments of the utility model are described in detail with the help of the drawings. DRAWINGS
[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.
[0015] Figure 1 is the prior detection circuit diagram of the present application;
[0016] Figure 2 is the detection circuit diagram of the present application. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application, and obviously, the described embodiments are some embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0018] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.
[0019] EMBODIMENT
[0020] As Figure 2 shown, a synchronization detection circuit suitable for multi-contact parallel high-power contactors, comprising a multi-contact contactor 10, the multi-contact contactor 10 is provided with a first contact group 11, a second contact group 12 and a third contact group 13, which are the same structure, the first moving contact of the first contact group 11 is connected with DC8V, the second moving contact of the first contact group 11 is connected with DC12V, the first moving contact of the second contact group 12 is connected with DC8V, the second moving contact of the second contact group 12 is connected with DC12V, the first moving contact of the third contact group 13 is connected with DC8V, the second moving contact of the third contact group 13 is connected with DC12V, the L end and the T end of the first contact group 11, the second contact group 12 and the third contact group 13 are connected with the corresponding connection end of the display device 9 respectively, the display device 9 is connected with DC24V through three series connected same resistance, DC24V is connected with the first moving contact through two series connected resistors, DC24V is connected with the second contact through a resistor;
[0021] The first contact group 11 comprises a pair of left static contact one 1 and left dynamic contact one 2, a pair of right static contact one 3 and right dynamic contact one 4, a pair of left static contact two 5 and left dynamic contact two 6, and a pair of right static contact two 7 and right dynamic contact two 8.
[0022] The left dynamic contact one 2 and the left dynamic contact two 6 are connected with DC 8V, and the right dynamic contact one 4 and the right dynamic contact two 8 are connected with DC 12V.
[0023] The display device 9 is an oscilloscope, wherein the oscilloscope has at least six connection ends corresponding to the first contact group 11, the second contact group 12 and the third contact group 13 respectively, and different contacts are used to realize different observations, so that the detection is convenient and fast.
[0024] The working principle of the utility model is as follows:
[0025] In the specific work, when the left dynamic contact one 2, the left dynamic contact two 6, the right dynamic contact one 4 and the right dynamic contact two 8 are in contact with the corresponding static contacts, the contact time of each contact will have an error of ms level, at this time, after the contact of different contacts is closed, the order of contact is confirmed through different lines of the oscilloscope, so that whether the contact is in good condition is quickly detected.
[0026] The specific implementation process is as follows:
[0027] Taking the first contact group as an example, suppose that the left static contact one 1 and the left dynamic contact one are marked as contact , the right static contact one 3 and the right dynamic contact one 4 are marked as contact , the left static contact two 5 and the left dynamic contact two 6 are marked as contact , and the right static contact two 7 and the right dynamic contact two 8 are marked as contact , then the order of contact is tested through the voltage feedback of the oscilloscope channel 3 and channel 4.
[0028] Table 1
[0029]
[0030] In table 1, the oscilloscope channel 3 measures 8V, the oscilloscope channel 3 measures 12V, and the oscilloscope channel 4 measures 12V, and the order is: .
[0031] Table 2
[0032]
[0033] In Table 2, Oscilloscope Channel 3 measures 8V, Oscilloscope Channel 3 measures 12V, Oscilloscope Channel 4 measures 12V, in that order: .
[0034] Table 3
[0035]
[0036] In Table 3, Oscilloscope Channel 3 measures 8V, Oscilloscope Channel 4 measures 8V, Oscilloscope Channel 3 measures 12V, Oscilloscope Channel 4 measures 12V, in that order: .
[0037] Table 4
[0038]
[0039] In Table 4, Oscilloscope Channel 3 measures 8V, Oscilloscope Channel 4 measures 8V, Oscilloscope Channel 3 measures 12V, Oscilloscope Channel 4 measures 12V, in that order: .
[0040] Table 5
[0041]
[0042] In Table 5, Oscilloscope Channel 3 measures 8V, Oscilloscope Channel 4 measures 16V, Oscilloscope Channel 3 measures 12V, Oscilloscope Channel 4 measures 12V, in that order: .
[0043] Table 6
[0044]
[0045] In Table 6, Oscilloscope Channel 3 measures 8V, Oscilloscope Channel 4 measures 16V, Oscilloscope Channel 3 measures 12V, Oscilloscope Channel 4 measures 12V, in that order: .
[0046] Table 7
[0047]
[0048] In Table 8, oscilloscope channel 3 measures 16V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0049] Table 9
[0050]
[0051] In Table 9, oscilloscope channel 3 measures 16V, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0052] Table 10
[0053]
[0054] In Table 10, oscilloscope channel 3 measures 16V, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0055] Table 11
[0056]
[0057] In Table 11, oscilloscope channel 3 measures 16V, oscilloscope channel 4 measures 16V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0058] Table 12
[0059]
[0060] In Table 12, oscilloscope channel 3 measures 16V, oscilloscope channel 4 measures 16V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0061] Table 13
[0062]
[0063] In Table 13, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 8V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0064] Table 13
[0065]
[0066] In Table 13, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 8V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0067] Table 14
[0068]
[0069] In Table 14, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 8V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0070] Table 15
[0071]
[0072] In Table 15, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 16V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0073] Table 16
[0074]
[0075] In Table 16, oscilloscope channel 4 measures 8V, oscilloscope channel 3 measures 16V, oscilloscope channel 3 measures 12V, and oscilloscope channel 4 measures 12V; the order is: .
[0076] Table 17
[0077]
[0078] In Table 17, oscilloscope channel 4 measured 8V, oscilloscope channel 4 measured 12V, and oscilloscope channel 3 measured 12V; the order is as follows: .
[0079] Table 18
[0080]
[0081] In Table 18, oscilloscope channel 4 measured 8V, oscilloscope channel 4 measured 12V, and oscilloscope channel 3 measured 12V; the order is as follows: .
[0082] Table 19
[0083]
[0084] In Table 19, oscilloscope channel 4 measured 16V, oscilloscope channel 3 measured 8V, oscilloscope channel 4 measured 12V, and oscilloscope channel 3 measured 12V; the order is as follows:
[0085] Table 20
[0086]
[0087] In Table 20, oscilloscope channel 4 measured 16V, oscilloscope channel 3 measured 8V, oscilloscope channel 4 measured 12V, and oscilloscope channel 3 measured 12V; the order is as follows: .
[0088] Table 21
[0089]
[0090] In Table 21, oscilloscope channel 4 measured 16V, oscilloscope channel 3 measured 16V, oscilloscope channel 4 measured 12V, and oscilloscope channel 3 measured 12V; the order is as follows: .
[0091] Table 22
[0092]
[0093] In Table 22, the oscilloscope channel 4 measures 16V, the oscilloscope channel 3 measures 16V, the oscilloscope channel 4 measures 12V, and the oscilloscope channel 3 measures 12V; the order is: .
[0094] Table 23
[0095]
[0096] In Table 23, the oscilloscope channel 4 measures 16V, the oscilloscope channel 4 measures 12V, and the oscilloscope channel 3 measures 12V; the order is: .
[0097] Table 24
[0098]
[0099] In Table 24, the oscilloscope channel 4 measures 16V, the oscilloscope channel 4 measures 12V, and the oscilloscope channel 3 measures 12V; the order is: .
[0100] The first and second closing sequences can be accurately obtained by the changes of the voltage values on the oscilloscope channels in Tables 1 to 24, and whether the synchronization is judged.
[0101] It should be noted that like reference numerals and characters refer to like items throughout the attached drawings and alternative embodiments thereof. Note that not all of the components of the systems described need to be present in all embodiments. A "determining device" can have additional components that are not explicitly called out in the figures. It is also contemplated that one or more components can be used in common with other components in the systems. It is further noted that the figures are not necessarily drawn to scale.
[0102] In the description of the present application, it should be noted that the terms "vertical", "horizontal", "inner", "outer", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0103] In addition, the terms "horizontal", "vertical", and the like, do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. As "horizontal" merely means that it is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but can be slightly inclined.
[0104] In the description of the present application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific sequence.
[0105] The above is only the preferred embodiment of the present application, and is not used to limit the present application. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present application.
Claims
1. A synchronism detection circuit suitable for a multi-contact parallel high-power contactor, comprising a multi-contact contactor (10), the multi-contact contactor (10) is provided with a first contact group (11), a second contact group (12) and a third contact group (13), which are the same structure, characterized in that: The first moving contact of the first contact group (11) is connected with DC8V, the second moving contact of the first contact group (11) is connected with DC12V, the first moving contact of the second contact group (12) is connected with DC8V, the second moving contact of the second contact group (12) is connected with DC12V, the first moving contact of the third contact group (13) is connected with DC8V, the second moving contact of the third contact group (13) is connected with DC12V, the L end and the T end of the first contact group (11), the second contact group (12) and the third contact group (13) are respectively connected with the corresponding connecting end of the display device (9), the display device (9) is connected with DC24V through three series-connected same resistance, DC24V is connected with the first moving contact through two series-connected resistances, and DC24V is connected with the second contact through one resistance.
2. The synchronism detection circuit according to claim 1, suitable for use in a multi- contact parallel high-power contactor, characterized in that: The display device (9) is an oscilloscope.
3. The synchronism detection circuit according to claim 2, suitable for use in a multi- contact parallel high power contactor, characterized in that: The oscilloscope has at least six connecting ends corresponding to the first contact group (11), the second contact group (12) and the third contact group (13) respectively.
4. The synchronism detection circuit according to claim 1, wherein: The first contact group (11) includes a pair of left static contact one (1) and left moving contact one (2), a pair of first right static contact one (3) and right moving contact one (4), a pair of left static contact two (5) and left moving contact two (6), and a pair of right static contact two (7) and right moving contact two (8). Among them, the left moving contact one (2) and the left moving contact two (6) are connected with DC8V, and the right moving contact one (4) and the right moving contact two (8) are connected with DC12V.