WO2023097753A1 - 一种抗大电流的电阻器 - Google Patents
一种抗大电流的电阻器 Download PDFInfo
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- WO2023097753A1 WO2023097753A1 PCT/CN2021/137158 CN2021137158W WO2023097753A1 WO 2023097753 A1 WO2023097753 A1 WO 2023097753A1 CN 2021137158 W CN2021137158 W CN 2021137158W WO 2023097753 A1 WO2023097753 A1 WO 2023097753A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
- H01C1/084—Cooling, heating or ventilating arrangements using self-cooling, e.g. fins, heat sinks
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- the invention relates to the technical field of resistors, in particular to a resistor with high current resistance.
- Locomotive braking resistors generally include multiple parallel resistors. Under the action of high current, two adjacent resistors are easy to pull together. There are coaxial holes on the chip, and mica string rods and mica rings are added in the middle to separate adjacent resistor sheets, that is, after each mica string rod passes through a resistor sheet, it passes through a mica ring, and then passes through the next piece Resistor sheets, so that adjacent resistor sheets are separated by the mica ring.
- This structure only separates the middle position of the resistance sheet, and the other positions are in contact with the air to dissipate heat. If the series of mica rings are separated, the heat dissipation at the separation will be blocked, making it difficult to dissipate the heat generated after the resistors are energized.
- the present invention provides a high-current-resistant resistor, which can completely prevent two adjacent resistors from drawing and pulling together, and the heat dissipation performance of the resistors can be greatly improved.
- the present invention provides the following technical solutions:
- a resistor against high current which includes a series bar, multiple insulated divider rings and multiple resistance sheets arranged in parallel. Between every two adjacent resistor sheets, so that multiple resistor sheets are positioned at intervals, and the multiple resistor sheets are connected in series or in parallel; the feature is that the resistor also includes a plurality of insulated heat conduction sheets arranged in parallel. , multiple heat conducting sheets are respectively located between two adjacent resistance sheets, and the heat conducting sheets have a relief hole for string rods and partition rings to pass through, and there is a clearance fit between the relief holes and the partition ring, and the heat conduction sheet The thickness is smaller than the distance between two adjacent resistance sheets, so that the heat conduction sheet can move along the arrangement direction between the two adjacent resistance sheets.
- the resistor also includes a bottom plate and two side plates, the two side plates are fixed on the bottom plate in parallel with each other, and the two ends of the string rods are fixed on the side plates, thereby erecting multiple resistor sheets.
- the bottoms of the two side plates are bent outwards to form a support platform, and the support platform is provided with slide rails.
- the ends of the two side panels are respectively provided with handles.
- an insulating plate is provided on the side of the side plate close to the resistor plate and the top surface of the bottom plate, and the string rod is threaded with a nut after passing through the corresponding insulating plate and the side plate.
- the resistor sheet and the heat conduction sheet are both rectangular plates, and two or more string bars are respectively worn on the two ends and the middle of the resistor sheet.
- the resistor sheet is provided with a plurality of grooves along the width direction, so that the resistor sheet is in a continuous S-shape; the two outermost resistor sheets extend out of the connection portion.
- the area of the heat conduction sheet is larger than that of the resistance sheet, so that the heat conduction sheet extends outward from the peripheral side of the resistance sheet.
- the heat conducting sheet is mica body.
- the thickness of the heat conducting sheet is 3-5 mm smaller than the distance between two adjacent resistor sheets.
- the high current resistance resistor of the present invention since the insulating heat conducting sheet is arranged between two adjacent resistance sheets, the adjacent two resistance sheets are separated by heat conduction sheets everywhere, so it can completely prevent adjacent The two resistors draw arc and pull together. Moreover, the heat conduction sheet can move along the arrangement direction. When a small current is applied to the resistance sheet without deformation, even if the heat conduction sheet does not touch the resistance sheet, the heat of the resistance sheet is transferred to the heat conduction sheet through the air.
- the heat conduction sheet does not generate heat and the temperature is lower, it must Promote the heat dissipation of the resistance sheet to a certain extent; when the resistance sheet is fed with a large current and heats up and deforms in the direction of arrangement, the side of the resistor sheet with a larger deformation will be attached to the heat conduction sheet first, and the heat conduction sheet will absorb the heat dissipation of the resistor sheet more fully Out, thereby reducing the temperature of the resistance sheet to prevent further deformation, so the heat dissipation effect is better, and it is more targeted for the resistance sheet with large heat deformation.
- FIG. 1 is a schematic structural diagram of a resistor for resisting large current in an embodiment.
- Fig. 2 is a cross-sectional view of the resistor for resisting large current in the embodiment, with partial structures hidden.
- Fig. 3 is an enlarged view at A in Fig. 2 .
- the anti-high current resistor of this embodiment includes a string bar 1, a plurality of insulated separator rings 2, and a plurality of resistance sheets 3 arranged side by side, and the string bar 1 connects a plurality of insulated
- the separation ring 2 and the multi-piece resistance strips 3 are connected in series, and each separation ring 2 is located between every adjacent two resistance strips 3, so that the multi-piece resistance strips 3 are positioned at intervals, and the multi-piece resistance strips 3 are connected in series or in parallel.
- the resistor also includes a plurality of insulated heat conduction sheets 4 arranged side by side. The plurality of heat conduction sheets 4 are respectively located between two adjacent resistance sheets 3 .
- Relief hole 41, gap fit between the relief hole 41 and the spacer ring 2, and the thickness of the heat conduction sheet 4 is less than the distance between the adjacent two resistance sheets 3, so that the heat conduction sheet 4 can be connected to the adjacent two resistance sheets.
- the sheets 3 move along the arrangement direction, and the thickness of the thermally conductive sheet 4 is preferably 3 ⁇ 5mm smaller than the distance between two adjacent resistor sheets 3, that is, the moving distance of the thermally conductive sheet 4.
- the separating ring 2 and the heat conducting sheet 4 are porcelain or mica parts, which have better thermal conductivity and insulation performance.
- the insulating heat conducting sheet 4 is located between two adjacent resistance sheets 3, the space between the adjacent two resistance sheets 3 is separated by the heat conduction sheet 4 everywhere, so it is possible to completely prevent two adjacent resistance sheets from The block resistor sheet 3 draws the arc and pulls in. Moreover, the heat conduction sheet 4 can move along the arrangement direction. When the small current resistance sheet 3 is not deformed, even if the heat conduction sheet 4 does not contact the resistance sheet 3, the heat of the resistance sheet 3 is transferred to the heat conduction sheet 4 via the air, because the heat conduction sheet 4 does not The lower heating temperature also promotes the heat dissipation of the resistor sheet 3 to a certain extent.
- the side of the resistance sheet 3 with larger deformation will preferentially stick to the heat conduction sheet 4, and the heat conduction sheet 4 will more fully absorb the heat of the resistance sheet 3 and dissipate it, thereby reducing
- the temperature of the resistive sheet 3 prevents further deformation, so the heat dissipation effect is better, and the resistive sheet 3 with larger heat deformation is more targeted.
- the resistor also includes a bottom plate 5 and two side plates 6, the two side plates 6 are fixed on the bottom plate 5 parallel to each other, and the two ends of the string rod 1 are fixed on the side plates 6, so that the multiple pieces Resistor piece 3 stands up.
- the bottoms of the two side plates 6 are bent outwards to form a support platform, and the support platform is provided with slide rails 62 .
- the two sides of the base plate 5 are bent upwards and fixed to the two side plates 6 by bolting or welding.
- the ends of the two side plates 6 are respectively provided with handles 61, combined with the slide rail 62, it is convenient for the staff to push and pull the entire resistor to install or remove it.
- an insulating plate 7 is respectively provided on the side near the resistance plate 3 of the side plate 6 and the top surface of the bottom plate 5, and the string rod 1 passes through the corresponding insulating plate 7 and the side plate 6. After the helical sleeve is provided with a nut, the improvement is improved. Insulation performance between the resistance sheet 3 and the side plate 6, between the resistance sheet 3 and the bottom plate 5.
- the resistance sheet 3 and the heat conduction sheet 4 are both rectangular plates, and two or more strings 1 are respectively worn on the two ends and the middle of the resistance sheet 3 .
- Each resistance sheet 3 is provided with a plurality of grooves along the width direction, so that the resistance sheet 3 is in a continuous S-shape; the two resistance sheets 3 located on the outermost side extend out of the connection part 31 for connecting multiple resistance sheets 3 in series and parallel Then connect with other resistors or use equipment.
- the area of the heat conduction sheet 4 is larger than that of the resistance sheet 3 , so that the heat conduction sheet 4 extends outward from the peripheral side of the resistance sheet 3 .
- the creepage distance at the sides of two adjacent resistance sheets 3 is extended to ensure the performance of insulation separation at non-series-parallel positions.
- connection In the description of the present invention, unless otherwise clearly specified and limited, the terms “installation”, “connection”, “connection” and “fixation” should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
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Abstract
本发明涉及电阻器技术领域，具体涉及一种抗大电流的电阻器，包括串杆、绝缘的多个分隔环和多片并列布置的电阻片，串杆将多个绝缘的分隔环和多片电阻片串起来，各分隔环位于每相邻两片电阻片之间，从而使得多片电阻片相间隔地定位，多片电阻片之间相互串联或并联。该电阻器还包括多片绝缘的并列布置的导热片，多片导热片分别位于各相邻两片电阻片之间，导热片开有供串杆和分隔环穿过的让位孔，让位孔与分隔环之间为间隙配合，且导热片的厚度小于相邻两片电阻片之间的距离，以使得导热片能够于相邻两片电阻片之间沿排列方向移动。能够完全防止相邻两块电阻片拉弧吸合，而且电阻片的散热性能得以大大提升。
Description
本发明涉及电阻器技术领域，具体涉及一种抗大电流的电阻器。
机车制动电阻器一般包括多片并列的电阻片，在大电流作用下，相邻两片电阻片之间容易吸合，为防止电阻片之间吸合，现有技术是在每一片的电阻片上开有同轴的孔，中间加云母串杆和云母环来隔开相邻的电阻片，即云母串杆每穿过一片电阻片后，再穿过一个云母环，然后再穿过下一片电阻片，这样相邻电阻片之间就通过该云母环来隔开。
这种结构仅分隔电阻片的中部位置，其它位置与空气接触散热，但缺点在于在大电流冲击情况下其它位置还是有相互靠近的可能，而如果相邻两片电阻片之间各个位置设置多串云母环分隔，则分隔之处的散热被阻隔，导致电阻片通电后产生的热量难以散出。
现有的片式电阻器在相邻两片电阻片之间的绝缘以及散热难以兼顾，在防拉弧吸合方面和散热方面亟待两全其美的方案。
针对现有技术存在上述技术问题，本发明提供一种抗大电流的电阻器，能够完全防止相邻两块电阻片拉弧吸合，而且电阻片的散热性能得以大大提升。
为实现上述目的，本发明提供以下技术方案：
提供一种抗大电流的电阻器，包括串杆、绝缘的多个分隔环和多片并列布置的电阻片，串杆将多个绝缘的分隔环和多片电阻片串起来，各分隔环位于每相邻两片电阻片之间，从而使得多片电阻片相间隔地定位，多片电阻片之间相互串联或并联；其特征是：该电阻器还包括多片绝缘的并列布置的导热片，多片导热片分别位于各相邻两片电阻片之间，导热片开有供串杆和分隔环穿过的让位孔，让位孔与分隔环之间为间隙配合，且导热片的厚度小于相邻两片电阻片之间的距离，以使得导热片能够于相邻两片电阻片之间沿排列方向移动。
具体的，该电阻器还包括底板和两块侧板，两块侧板相互平行地固定在底板上，串杆的两端部固定于侧板，从而将多片电阻片架起来。
具体的，两块侧板的底部朝外折弯形成支撑台，支撑台设有滑轨。
具体的，两块侧板的端部分别设有拉手。
具体的，侧板的靠近电阻片的侧面、底板的顶面分别设有绝缘板，串杆穿过对应的绝缘板和侧板后螺旋套有螺母。
具体的，电阻片和导热片均为矩形板，电阻片的两端部和中部分别穿有两条以上的所述串杆。
具体的，电阻片设有多个沿宽度方向的槽体，从而使得电阻片为连续S状；位于最外侧的两块电阻片延伸出接线部。
具体的，导热片的面积大于电阻片的面积，从而使得导热片从电阻片的周侧朝外延伸。
具体的，导热片为云母体。
具体的，导热片的厚度比相邻两片电阻片之间距离小3~5mm。
本发明的抗大电流的电阻器，由于设置了绝缘的导热片位于相邻两块电阻片之间，因此相邻两块电阻片之间处处被导热片分隔，因此能够做到完全防止相邻两块电阻片拉弧吸合。而且导热片能够沿排列方向移动，在通入小电流电阻片不变形时，即使导热片不接触电阻片，电阻片的热量经由空气传递给导热片，由于导热片不发热温度更低，也一定程度促进电阻片的热量散出；当电阻片通入大电流而发热朝排列方向变形时，变形较大的电阻片侧面会优先贴合导热片，导热片会更充分地吸收电阻片的热量散出，从而降低电阻片温度阻止进一步变形，因此散热效果更好，而且对发热变形较大的电阻片更有针对性。
图1为实施例中的抗大电流的电阻器的结构示意图。
图2为实施例中的抗大电流的电阻器的剖视图，隐藏了局部结构。
图3为图2中A处的放大视图。
附图标记：
串杆1、分隔环2、电阻片3、接线部31；
导热片4、让位孔41；
底板5、侧板6、拉手61、滑轨62、绝缘板7。
以下结合具体实施例及附图对本发明进行详细说明。
本实施例的抗大电流的电阻器，如图1至图3所示，包括串杆1、绝缘的多个分隔环2和多片并列布置的电阻片3，串杆1将多个绝缘的分隔环2和多片电阻片3串起来，各分隔环2位于每相邻两片电阻片3之间，从而使得多片电阻片3相间隔地定位，多片电阻片3之间相互串联或并联。该电阻器还包括多片绝缘的并列布置的导热片4，多片导热片4分别位于各相邻两片电阻片3之间，导热片4开有供串杆1和分隔环2穿过的让位孔41，让位孔41与分隔环2之间为间隙配合，且导热片4的厚度小于相邻两片电阻片3之间的距离，以使得导热片4能够于相邻两片电阻片3之间沿排列方向移动，优选的导热片4的厚度比相邻两片电阻片3之间距离小3~5mm，即导热片4的移动距离。分隔环2和导热片4为瓷件或者云母件，导热性能和绝缘性能较佳。
本实施例中，由于设置了绝缘的导热片4位于相邻两块电阻片3之间，因此相邻两块电阻片3之间处处被导热片4分隔，因此能够做到完全防止相邻两块电阻片3拉弧吸合。而且导热片4能够沿排列方向移动，在通入小电流电阻片3不变形时，即使导热片4不接触电阻片3，电阻片3的热量经由空气传递给导热片4，由于导热片4不发热温度更低，也一定程度促进电阻片3的热量散出。当电阻片3通入大电流而发热朝排列方向变形时，变形较大的电阻片3侧面会优先贴合导热片4，导热片4会更充分地吸收电阻片3的热量散出，从而降低电阻片3温度阻止进一步变形，因此散热效果更好，而且对发热变形较大的电阻片3更有针对性。
本实施例中，该电阻器还包括底板5和两块侧板6，两块侧板6相互平行地固定在底板5上，串杆1的两端部固定于侧板6，从而将多片电阻片3架起来。两块侧板6的底部朝外折弯形成支撑台，支撑台设有滑轨62。底板5的两侧部朝上折弯与两块侧板6通过螺栓固定或焊接贴合固定。两块侧板6的端部分别设有拉手61，结合滑轨62便于工作人员将整个电阻器推拉安装或拆卸。
本实施例中，侧板6的靠近电阻片3的侧面、底板5的顶面分别设有绝缘板7，串杆1穿过对应的绝缘板7和侧板6后螺旋套有螺母，提高了电阻片3与侧板6之间、电阻片3与底板5之间的绝缘性能。
本实施例中，电阻片3和导热片4均为矩形板，电阻片3的两端部和中部分别穿有两条以上的所述串杆1。每电阻片3设有多个沿宽度方向的槽体，从而使得电阻片3为连续S状；位于最外侧的两块电阻片3延伸出接线部31，用于将多片电阻片3串并联后与其它电阻器或使用设备连接。
本实施例中，导热片4的面积大于电阻片3的面积，从而使得导热片4从电阻片3的周侧朝外延伸。延长了相邻两片电阻片3侧部的爬电距离，确保非串并联位置的绝缘分隔性能。
在本发明的描述中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
本发明使用到的标准零件均可以从市场上购买，异形件根据说明书的和附图的记载均可以进行订制，各个零件的具体连接方式均采用现有技术中成熟的螺栓、铆钉、焊接等常规手段，机械、零件和设备均采用现有技术中，常规的型号，加上电路连接采用现有技术中常规的连接方式，在此不再详述。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
最后应当说明的是，以上实施例仅用以说明本发明的技术方案，而非对本发明保护范围的限制，尽管参照较佳实施例对本发明作了详细地说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。
Claims (10)
- 一种抗大电流的电阻器，包括串杆、绝缘的多个分隔环和多片并列布置的电阻片，串杆将多个绝缘的分隔环和多片电阻片串起来，各分隔环位于每相邻两片电阻片之间，从而使得多片电阻片相间隔地定位，多片电阻片之间相互串联或并联；其特征是：该电阻器还包括多片绝缘的并列布置的导热片，多片导热片分别位于各相邻两片电阻片之间，导热片开有供串杆和分隔环穿过的让位孔，让位孔与分隔环之间为间隙配合，且导热片的厚度小于相邻两片电阻片之间的距离，以使得导热片能够于相邻两片电阻片之间沿排列方向移动。
- 根据权利要求1所述的一种抗大电流的电阻器，其特征是：该电阻器还包括底板和两块侧板，两块侧板相互平行地固定在底板上，串杆的两端部固定于侧板，从而将多片电阻片架起来。
- 根据权利要求2所述的一种抗大电流的电阻器，其特征是：两块侧板的底部朝外折弯形成支撑台，支撑台设有滑轨。
- 根据权利要求2所述的一种抗大电流的电阻器，其特征是：两块侧板的端部分别设有拉手。
- 根据权利要求2所述的一种抗大电流的电阻器，其特征是：侧板的靠近电阻片的侧面、底板的顶面分别设有绝缘板，串杆穿过对应的绝缘板和侧板后螺旋套有螺母。
- 根据权利要求1所述的一种抗大电流的电阻器，其特征是：电阻片和导热片均为矩形板，电阻片的两端部和中部分别穿有两条以上的所述串杆。
- 根据权利要求6所述的一种抗大电流的电阻器，其特征是：电阻片设有多个沿宽度方向的槽体，从而使得电阻片为连续S状；位于最外侧的两块电阻片延伸出接线部。
- 根据权利要求6所述的一种抗大电流的电阻器，其特征是：导热片的面积大于电阻片的面积，从而使得导热片从电阻片的周侧朝外延伸。
- 根据权利要求1所述的一种抗大电流的电阻器，其特征是：导热片为云母体。
- 根据权利要求1所述的一种抗大电流的电阻器，其特征是：导热片的厚度比相邻两片电阻片之间距离小3~5mm。
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| CN111755184B (zh) * | 2020-06-22 | 2024-06-07 | 上海鹰峰电子科技股份有限公司 | 一种铝壳封装能量电阻器 |
| CN112086252A (zh) * | 2020-09-14 | 2020-12-15 | 广东意杰科技有限公司 | 一种高压超大容量水冷电阻器 |
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