WO2017016391A1 - 晶闸管触发单元的外壳结构 - Google Patents

晶闸管触发单元的外壳结构 Download PDF

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Publication number
WO2017016391A1
WO2017016391A1 PCT/CN2016/089943 CN2016089943W WO2017016391A1 WO 2017016391 A1 WO2017016391 A1 WO 2017016391A1 CN 2016089943 W CN2016089943 W CN 2016089943W WO 2017016391 A1 WO2017016391 A1 WO 2017016391A1
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WO
WIPO (PCT)
Prior art keywords
panel
trigger unit
thyristor trigger
outer casing
fixing
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PCT/CN2016/089943
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English (en)
French (fr)
Inventor
陈赤汉
方太勋
杨帆
高彪
李乐乐
刘磊
Original Assignee
南京南瑞继保电气有限公司
南京南瑞继保工程技术有限公司
常州博瑞电力自动化设备有限公司
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Application filed by 南京南瑞继保电气有限公司, 南京南瑞继保工程技术有限公司, 常州博瑞电力自动化设备有限公司 filed Critical 南京南瑞继保电气有限公司
Priority to KR1020187004509A priority Critical patent/KR101911076B1/ko
Priority to US15/748,613 priority patent/US10237986B2/en
Priority to JP2018524516A priority patent/JP2018533224A/ja
Publication of WO2017016391A1 publication Critical patent/WO2017016391A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0004—Casings, cabinets or drawers for electric apparatus comprising several parts forming a closed casing
    • H05K5/0008—Casings, cabinets or drawers for electric apparatus comprising several parts forming a closed casing assembled by screws
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14339—Housings specially adapted for power drive units or power converters specially adapted for high voltage operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
    • H05K7/1402—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards
    • H05K7/1407—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards by turn-bolt or screw member
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters

Definitions

  • the invention relates to the field of power system components, and in particular to a shell structure of a thyristor trigger unit.
  • the performance of the thyristor-trigger unit is critical.
  • the bare TE board is directly installed in the converter valve.
  • the method is convenient to install and saves space, the anti-pollution and anti-interference ability is weak, and the long-term operation has hidden troubles.
  • thyristor trigger units for the converter valve are mounted in such a way that the main circuit board is packaged in the housing and the housing is fixed to the heat sink in the valve layer by screws.
  • the detachable panel of the trigger unit is located at the bottom of the housing, and the main circuit board is fixed on the inner side of the housing.
  • the thyristor triggering unit used in the melting ice project is also a flat rectangular parallelepiped structure, but the bottom fixing plate + the upper cover structure is adopted, the main circuit board is mounted on the rectangular fixing plate, and the upper cover of the rectangular parallelepiped is placed on the upper cover.
  • a plurality of holes are formed in the cover for the fiber and cable to enter and exit, and the trigger unit is fixed by a small portion extending from the bottom fixing plate.
  • the outer casing structure of the thyristor trigger unit facilitates the mounting and fixing of the circuit board in the outer casing, but there are also some disadvantages:
  • the bottom fixing plate is wider, the portion that extends out is also wider, which requires a larger size for mounting and fixing, and is not applicable when a narrower heat sink is used in a relatively compact valve design.
  • the object of the present invention is to provide a thyristor trigger unit outer casing structure which is simple in structure, small in installation and fixed size, easy to debug, and strong in anti-interference ability.
  • the present invention is implemented by the following technical solution: the outer casing structure of the thyristor trigger unit, including the outer casing body and the side plate, characterized in that:
  • the outer casing body comprises a fixing frame and a rectangular parallelepiped integrally formed structure
  • the rectangular parallelepiped integrally formed structure is a rectangular parallelepiped having an open front, the rectangular parallelepiped includes a rear panel, a left panel, a right panel, an upper panel and a lower panel; and an open surface is formed at a front opening of the rectangular parallelepiped;
  • the fixing frame comprises a square fixing plate and two triangular reinforcing rib plates; the square fixing plate is formed by the bottom plate extending along a longitudinal direction of the rectangular parallelepiped toward a side of the left panel;
  • a triangular reinforcing rib is fixedly connected between the square fixing plate and the left panel;
  • the side panels are adapted to the open face and are detachably mounted on the open face for sealing the open face. Form a closed 6-sided cuboid structure.
  • the rear panel is provided with at least one screw hole for fixing the trigger circuit board to the rear panel.
  • the lower panel surface is provided with at least one water leakage hole for discharging water inadvertently entering the thyristor trigger unit in time.
  • the lower panel is provided with at least one energy-carrying cable hole for the cable to pass through.
  • the main circuit board is connected to the main circuit of the valve layer through a plurality of cables extending through the holes of the energy-receiving cable to achieve the purpose of energy dissipation.
  • the left panel is provided with a thyristor triggering line hole for the thyristor trigger line to pass.
  • the thyristor trigger unit sends a trigger electrical pulse to the thyristor gate stage through the trigger line of the thyristor triggering line.
  • the right panel is provided with two fiber holes for the trigger fiber and the return fiber to pass through. Corresponding to the return fiber interface and the trigger fiber interface.
  • At least one fixing rod is disposed in the rectangular body, the fixing rod has a stud at one end and an internal screw hole at the other end; and the stud is matched with a screw hole on the rear plate.
  • At least one mounting screw hole is opened in the side plate, and the side plate is fixed on the opening surface by a screw, a mounting screw hole and a fixing rod.
  • the square fixing plate is provided with at least one fixing screw hole for fixing the outer casing main body on the heat sink in the valve layer.
  • the invention has the following beneficial effects: 1. facilitating the fixing of the outer casing and the installation of the circuit board; 2. facilitating the measurement and debugging of the signals in the circuit board; 3. facilitating the drainage when the valve leaks.
  • Figure 1 is a 45° angle diagram of the outer structure of the thyristor trigger unit.
  • FIG. 2 is a side view of a thyristor trigger unit.
  • the outer casing structure of the thyristor trigger unit includes a casing body and a side plate 2
  • the casing body includes a fixing frame and a rectangular parallelepiped integrally formed structure
  • the rectangular parallelepiped integrally formed structure is a rectangular parallelepiped having an open front, and the rectangular parallelepiped includes a rear panel 7, a left panel 11, a right panel 12, an upper panel 1 and a lower panel 5
  • an open surface is formed at a front opening of the rectangular parallelepiped
  • the fixing bracket comprises a square fixing plate 3 and two triangular reinforcing ribs 4
  • a square fixing plate 3 is formed by the bottom panel 2 extending along the longitudinal direction of the rectangular parallelepiped toward the left panel 11
  • the triangular rib 4 is fixedly connected between the square fixing plate 3 and the left panel 11
  • the side panel 2 is adapted to the open surface and Removably mounted on the open side to seal the open side.
  • the rear panel 7 is provided with at least one screw hole 16 for fixing the trigger circuit board to the rear panel 7.
  • the lower panel 5 is provided with at least one water leakage hole 9 for discharging water inadvertently entering the thyristor trigger unit in time.
  • the lower panel is provided with at least one energy-carrying cable hole 10 for the cable to pass through.
  • the main circuit board is connected to the main circuit of the valve layer through a plurality of cables extending through the holes of the energy-receiving cable to achieve the purpose of energy dissipation.
  • a thyristor triggering line hole for passing the thyristor trigger line is opened on the left panel 11.
  • the thyristor trigger unit sends a trigger electrical pulse to the thyristor gate stage through the trigger line of the thyristor triggering line.
  • the right panel 12 has two fiber holes 13 through which the trigger fiber and the return fiber pass. Corresponding to the return fiber interface and the trigger fiber interface.
  • At least one fixing rod 8 is disposed in the rectangular body, and the fixing rod 8 has a stud at one end and an inner screw hole at the other end; the stud is matched with the screw hole 16 on the rear panel 7.
  • the side plate 2 is provided with at least one mounting screw hole 14 through which the side plate 2 passes The mounting screw hole 14 and the fixing rod 8 are fixed to the opening surface.
  • the square fixing plate 3 is provided with at least one fixing screw hole 6 for fixing the outer casing main body to the heat sink in the valve layer.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Rectifiers (AREA)
  • Casings For Electric Apparatus (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)

Abstract

一种晶闸管触发单元的外壳结构，包括外壳主体和侧板（2），所述外壳主体包括固定架和长方体一体成型结构；长方体一体成型结构为前面开口的长方体，所述长方体包括后面板（7）、左面板（11）、右面板（12）、上面板（1）和下面板（5）；所述长方体的前面开口处形成开放面；固定架包括方形固定板（3）和两个三角形加强筋板（4）；方形固定板（3）由底面板沿长方体的长边方向向左面板（11）一侧延伸形成；三角形加强筋板（4）固定连接在方形固定板（3）和左面板（11）之间；所述侧板（2）与开放面相适配并可拆卸式安装在开放面上，用于将开放面封住，形成一个封闭的6面的长方体结构。该晶闸管触发单元的外壳结构便于外壳固定和电路板的安装，便于电路板内信号的测量调试，便于阀内漏水时的排水。

Description

晶闸管触发单元的外壳结构 技术领域
本发明涉及电力系统元器件领域，尤其涉及一种晶闸管触发单元的外壳结构。
背景技术
在高压直流换流阀中，晶闸管触发单元的性能至关重要。某些直流工程中采用裸露的TE板直接安装在换流阀中，该方法虽安装方便且节省空间，但是抗污抗干扰能力较弱，长期运行有故障隐患。
另一些换流阀用晶闸管触发单元采用如下安装方式：将触发主电路板封装在外壳中后通过螺钉将外壳固定在阀层中的散热器上。该触发单元的可拆卸面板位于外壳底部，而主电路板则固定在外壳的内侧面，在实施过程中发现以下几个问题：
首先，在将触发主电路板固定在外壳内时，由于外壳壳体较扁，而固定螺丝在外壳侧面，导致手不便伸入外壳内将电路板和外壳的固定点对准。
其次，在进行调试的时候，需要利用示波器测量板上信号时，很难将探头从较为狭窄的底面伸入外壳内进行测量。
融冰工程中使用的晶闸管触发单元也为扁形长方体结构，但其采用底部固定板+上罩的结构，将主电路板安装在长方形固定板上，再在上面罩上长方体形的上罩，上罩上开有若干个孔洞供光纤和电缆进出，触发单元通过底部固定板延伸出去的一小块部分进行固定。
这种晶闸管触发单元的外壳结构便于电路板在外壳内的安装固定，但也存在一定不足：
首先，由于底部固定板较宽，其延伸出去的部分也较宽，对于安装固定的尺寸要求较大，对于较为紧凑的阀设计中采用较窄的散热器时，该外壳不适用。
其次，由于光纤和电缆通过上罩中的孔洞进出，当对晶闸管触发单元进行调试需要取下上罩时，需将光纤和电缆解开，调试结束再将其复原，给调试带来了很大的麻烦。
发明内容
本发明的目的是提供一种结构简单、安装固定尺寸小、便于调试、抗干扰能力强的晶闸管触发单元外壳结构。
为了实现以上目的，本发明采取以下技术方案予以实现：晶闸管触发单元的外壳结构，包括外壳主体和侧板，其特征在于：
所述外壳主体包括固定架和长方体一体成型结构；
长方体一体成型结构为前面开口的长方体，所述长方体包括后面板、左面板、右面板、上面板和下面板；所述长方体的前面开口处形成开放面；
固定架包括方形固定板和两个三角形加强筋板；方形固定板由底面板沿长方体的长边方向向左面板一侧延伸形成；
三角形加强筋板固定连接在方形固定板和左面板之间；
所述侧板与开放面相适配并可拆卸式安装在开放面上，用于将开放面封住。形成一个封闭的6面的长方体结构。
进一步的，所述后面板上设有至少一个用于将触发电路板固定于后面板上的螺孔。
进一步的，所述下面板面上开有至少一个用于及时将不慎进入晶闸管触发单元内的水排出的漏水孔。
进一步的，所述下面板上开有至少一个供取能电缆通过的取能电缆孔。主电路板通过这些取能电缆孔伸出若干电缆连接在阀层的主回路中，以达到取能的目的。
进一步的，所述左面板上开有用于晶闸管触发线通过的晶闸管触发线孔。晶闸管触发单元通过该晶闸管触发线孔伸出一根触发线向晶闸管门级发送触发电脉冲。
进一步的，所述右面板上开有两个可供触发光纤和回报光纤通过的光纤孔。分别对应回报光纤接口和触发光纤接口。
进一步的，所述长方体内设有至少一根固定杆，所述固定杆一端为螺柱，另一端为内螺孔；所述螺柱与后面板上的螺孔相适配。
进一步的，侧板上开有至少一个安装螺孔，所述侧板通过螺钉、安装螺孔和固定杆固定在开口面上。
进一步的，所述方形固定板上开有至少一个用于将外壳主体固定在阀层内的散热器上的固定螺孔。
采用上述方案后，本发明具有以下有益效果：1.便于外壳固定和电路板的安装；2.便于电路板内信号的测量调试；3.便于阀内漏水时的排水。
附图说明
图1是晶闸管触发单元外壳结构45°角示意图。
图2是晶闸管触发单元侧视图。
具体实施方式1
实施例1
参见图1和图2，本晶闸管触发单元的外壳结构，包括外壳主体和侧板2，所述外壳主体包括固定架和长方体一体成型结构；长方体一体成型结构为前面开口的长方体，所述长方体包括后面板7、左面板11、右面板12、上面板1和下面板5；所述长方体的前面开口处形成开放面；固定架包括方形固定板3和两个三角形加强筋板4；方形固定板3由底面板2沿长方体的长边方向向左面板11一侧延伸形成；三角形加强筋板4固定连接在方形固定板3和左面板11之间；所述侧板2与开放面相适配并可拆卸式安装在开放面上，用于将开放面封住。形成一个封闭的6面的长方体结构。
作为优选方案，所述后面板7上设有至少一个用于将触发电路板固定于后面板7上的螺孔16。所述下面板5上开有至少一个用于及时将不慎进入晶闸管触发单元内的水排出的漏水孔9。所述下面板上开有至少一个供取能电缆通过的取能电缆孔10。主电路板通过这些取能电缆孔伸出若干电缆连接在阀层的主回路中，以达到取能的目的。所述左面板11上开有用于晶闸管触发线通过的晶闸管触发线孔。晶闸管触发单元通过该晶闸管触发线孔伸出一根触发线向晶闸管门级发送触发电脉冲。所述右面板12上开有两个可供触发光纤和回报光纤通过的光纤孔13。分别对应回报光纤接口和触发光纤接口。所述长方体内设有至少一根固定杆8，所述固定杆8一端为螺柱，另一端为内螺孔；所述螺柱与后面板7上的螺孔16相适配。侧板2上开有至少一个安装螺孔14，所述侧板2通过螺钉、 安装螺孔14和固定杆8固定在开口面上。所述方形固定板3上开有至少一个用于将外壳主体固定在阀层内的散热器上的固定螺孔6。
此处已经根据特定的示例性实施例对本发明进行了描述。对本领域的技术人员来说在不脱离本发明的范围下进行适当的替换或修改将是显而易见的。示例性的实施例仅仅是例证性的，而不是对本发明的范围的限制，本发明的范围由所附的权利要求定义。

Claims (9)

  1. 一种晶闸管触发单元的外壳结构，包括外壳主体和侧板，其特征在于：
    所述外壳主体包括固定架和长方体一体成型结构；
    长方体一体成型结构为前面开口的长方体，所述长方体包括后面板、左面板、右面板、上面板和下面板；所述长方体的前面开口处形成开放面；
    固定架包括方形固定板和两个三角形加强筋板；方形固定板由底面板沿长方体的长边方向向左面板一侧延伸形成；
    三角形加强筋板固定连接在方形固定板和左面板之间；
    所述侧板与开放面相适配并可拆卸式安装在开放面上，用于将开放面封住；
  2. 根据权利要求1所述的晶闸管触发单元的外壳结构，其特征在于：所述后面板上设有至少一个用于将触发电路板固定于后面板上的螺孔。
  3. 根据权利要求2所述的晶闸管触发单元的外壳结构，其特征在于：所述下面板面上开有至少一个用于及时将不慎进入晶闸管触发单元内的水排出的漏水孔。
  4. 根据权利要求3所述的晶闸管触发单元的外壳结构，其特征在于：所述下面板上开有至少一个供取能电缆通过的供取能电缆孔。
  5. 根据权利要求4所述的晶闸管触发单元的外壳结构，其特征在于：所述左面板上开有用于晶闸管触发线通过的晶闸管触发线孔。
  6. 根据权利要求5所述的晶闸管触发单元的外壳结构，其特征在于：所述右面板上开有两个可供触发光纤和回报光纤通过的光纤孔。
  7. 根据权利要求1-5中任一项所述的晶闸管触发单元的外壳结构，其特征在于：所述长方体内设有至少一根固定杆，所述固定杆一端为螺柱，另一端为内螺孔；所述螺柱与后面板上的螺孔相适配。
  8. 根据权利要求7所述的晶闸管触发单元的外壳结构，其特征在于，侧板上开有至少一个安装螺孔，所述侧板通过螺钉、安装螺孔和固定杆固定在开口面上。
  9. 根据权利要求1-5中任一项所述的晶闸管触发单元的外壳结构，其特征在于：所述方形固定板上开有至少一个用于将外壳主体固定在阀层内的散热器上的固定螺孔。
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