EP3022757B1 - Changeur de prises en charge et procédé de réglage en mode secours d'une position de commutation définie d'un changeur de prises en charge - Google Patents

Changeur de prises en charge et procédé de réglage en mode secours d'une position de commutation définie d'un changeur de prises en charge Download PDF

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Publication number
EP3022757B1
EP3022757B1 EP14738425.9A EP14738425A EP3022757B1 EP 3022757 B1 EP3022757 B1 EP 3022757B1 EP 14738425 A EP14738425 A EP 14738425A EP 3022757 B1 EP3022757 B1 EP 3022757B1
Authority
EP
European Patent Office
Prior art keywords
transmission
load tap
tap changer
shaft
protective cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14738425.9A
Other languages
German (de)
English (en)
Other versions
EP3022757A1 (fr
Inventor
Gerhard FELIXBERGER
Johann Jobst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP3022757A1 publication Critical patent/EP3022757A1/fr
Application granted granted Critical
Publication of EP3022757B1 publication Critical patent/EP3022757B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/056—Tools for actuating a switch

Definitions

  • the present invention relates to an on-load tap-changer.
  • the on-load tap-changer has an electric motor and a force accumulator, which are mechanically coupled via a transmission provided with a transmission housing.
  • the transmission has a gear shaft on which a toothing is formed.
  • the invention relates to a method for emergency operation setting a defined switching position of an on-load tap-changer.
  • On-load tap-changers (abbreviated OLTC) are well known and commonly used in the art. They are used for uninterrupted switching between different winding taps of tapped transformers. On-load tap-changers are divided into load selectors and diverter switches with selectors.
  • a diverter switch with selector such as in the German patent DE 100 55 406 C1 discloses the selector, consisting of a fine selector and possibly a preselector, arranged below the diverter switch.
  • the selector is used for powerless selection of the respective new winding tapping of the tapped transformer to be switched to.
  • the diverter switch is used for subsequent rapid and uninterrupted switching from the wired to the new, preselected winding tap to be wired.
  • the Chinese utility model font CN 2870107 Y discloses a steering drive for an on-load tap changer comprising a transmission with a horizontal drive shaft. One end of the drive shaft can be coupled to a drive motor. The remaining gear surrounded by a gearbox.
  • the horizontal drive shaft transmits its rotational movement via an angular gear consisting of a bevel pinion of the drive shaft and a bevel gear of the input shaft, transmits to the input shaft.
  • the Chinese patent application CN 102623210 A discloses a motor-driven transmission with a planetary gear and a position indicator for an on-load tap-changer.
  • the Chinese utility model font CN 202258744 U relates to a transmission and a transmission control for on-load tap-changer, in particular with an electrical system for emergency operation.
  • a transmission housing a vertically mounted output shaft and a drive shaft are provided.
  • the drive shaft is provided with a cross member and a thrust bearing.
  • a worm wheel on the output shaft is connected via a worm shaft to the drive shaft.
  • the electrical system and the transmission control allow switching between electrical and manual operation of the on-load tap-changer.
  • the Bulgarian patent BG 66062 B1 discloses a transmission for the electromotive actuation of an on-load tap-changer.
  • Via a worm gear a control shaft is mechanically coupled to the drive shaft.
  • One end of the control shaft is guided out of a gear housing and carries a disc with one or more recesses, which cooperate with a control unit.
  • the German patent application DE 35 41 888 A1 discloses a transmission for stepwise actuating a diverter switch converter with a hand crank actuatable manual drive shaft.
  • An output shaft can be coupled to one with the Umstellerwelle and performs one switching step per switching step.
  • a housing includes a transmission gear coupling the manual drive shaft and output shaft and a switch position indicator with viewing window.
  • Hand drive shaft and output shaft are arranged in parallel and are mechanically coupled by an orthogonally arranged gear shaft via a respective worm thread. By varying the pitch of these two threads, the gearbox can translate one revolution of the drive shaft into 81 ⁇ 2 revolutions on the crankshaft that an operator must apply in manual mode.
  • EP 2 535 911 A1 discloses an on-load tap changer according to the preamble of claim 1.
  • An object of the invention is to provide a simple, low-cost and low-maintenance on-load tap-changer in which a defined shift position can be set in a safe, damage-free, ergonomic and easy-to-use manner in the manual emergency drive.
  • This object is achieved by an on-load tap changer according to claim 1.
  • Another object of the invention is to provide a method by which a defined shift position of an on-load tap-changer can be set in a safe, damage-free, ergonomic and easy-to-use manner in the manual emergency drive.
  • the on-load tap-changer comprises a drive, preferably an electric motor, for mounting an energy accumulator which effects the actual switching of the on-load tap-changer.
  • Electric motor and energy storage are mechanically coupled via a gearbox.
  • the transmission is provided with a transmission housing and has a transmission shaft on which a toothing, such as a screw thread, is formed.
  • an extension is formed, which has a free end for attaching a tool for mounting the force accumulator.
  • the free end can be designed as an adapter for the form-fitting attachment of a tool.
  • the adapter may for example be a hexagon head, which can be operated with a corresponding tool. Adapter and tool cooperate according to the key lock principle, so that the gear shaft can be operated accordingly.
  • the free end of the extension of the gear shaft can protrude from an opening in the gear housing, so as to set the tool at the free end.
  • the free end of the extension of the transmission shaft may be accessible via the opening of the transmission housing. In this case, the tool protrudes into the gear housing to operate the gear shaft emergency operation.
  • the opening in the driveline housing can be provided with a protective cap which is detachably mounted on the transmission housing and in particular positively covers the free end of the extension of the transmission shaft and also the opening of the transmission housing.
  • the protective cap is provided with a sealing element to prevent dirt or moisture entry into the transmission.
  • the protective cap can be configured and arranged such that it, mounted on the transmission housing, actuates a circuit breaker arranged in the transmission housing.
  • the circuit breaker can, for example, enable the circuit of the electric motor as soon as it is actuated. Consequently, the circuit of the electric motor is disconnected when the protective cap is removed for safety reasons. For an operator of the tool attached to the free end of the gear shaft, it is ensured that the gear is not damaged by an erroneous drive of the electric motor or the operator himself is injured.
  • a projection on the protective cap is formed. When mounted on the transmission housing cap the projection protrudes through the opening into the transmission housing and actuates the circuit breaker, so that the circuit of the electric motor is closed.
  • the electric motor may be mechanically coupled to the transmission shaft via a first speed translator and the transmission shaft to a drive shaft of the energy accumulator via a second speed multiplier.
  • a speed converter according to the invention is, for example, a preferably slip-free, gearless transmission with a 1: 1 different speed ratio between input speed and output speed.
  • the first speed translator may be constructed of a pinion and a gear mechanically coupled thereto.
  • the pinion with the electric motor and the gear with the gear shaft are each rigidly connected.
  • the second speed multiplier can be constructed from the toothing of the transmission designed as a worm thread and a worm gear mechanically coupled thereto.
  • the helical gear is rigidly connected to the input shaft.
  • the invention further relates to a method for emergency operation setting a defined switching position of an on-load tap-changer.
  • a protective cap mounted on a transmission housing is removed.
  • the protective cap covers a free end of an extension of a transmission shaft of a transmission.
  • the transmission mechanically couples an electric motor with a force accumulator for actuating a preselector and / or a Switching column of the on-load tap-changer.
  • a tool is attached to the free end of the extension of the transmission shaft.
  • the gear shaft is rotated by turning the tool by an operator until the energy storage is fully wound up. As soon as the energy accumulator is fully wound up, it is released by a mechanical device and its relaxation movement is converted into a defined rotational movement of a switching column and / or for actuating a preselector of the on-load tap-changer.
  • An advantage of the invention is the simple, safe, robust and cost-effective design of a transmission for an on-load tap-changer.
  • the transmission shaft has the extension, the free end can be used as an approach for the manual emergency drive of the on-load tap-changer.
  • the electric motor does not have to be dismantled in emergency operation, but only a protective cap has to be removed.
  • emergency operation the operator and the on-load tap-changer are additionally protected, since the protective cap triggers a circuit breaker only in the state mounted on the gearbox housing, which releases the circuit of the electric motor.
  • the electric motor is de-energized.
  • the number of rotations that the electric motor or an operator must perform with the at the free end of the extension of the transmission shaft with the attached tool to raise the power storage can be set independently.
  • the energy accumulator can be fully wound by a rotation of the input shaft with a torque of typically 150 Nm.
  • an operator for example, must apply only 10 Nm of torque to completely raise the power storage with 25.5 turns.
  • the electric motor can be operated at much higher and more power efficient speed and torque ranges, e.g. with 128 revolutions per circuit or a torque of only 2.3 Nm.
  • Fig. 1 shows a perspective view of an on-load tap changer according to the invention in the form of a three-phase load selector 1.
  • the load selector 1 has an electric motor 3 with a gear 5, which raises a force accumulator 13. If the energy storage device 13 is fully wound, ie tensioned, it is unlatched, releases its energy abruptly and actuates a switching tube 15.
  • the rotating switching tube 15 is rotatably supported in the oil vessel 18.
  • the oil vessel 18 is closed at the top with a lid 19 and also carries a bottom element 21st
  • the load selector 1 has three phases L1, L2, L3, which are arranged one above the other in the oil vessel 18. About the three phases L1, L2, L3 sits a preselector 37. Electrical connection elements 39 for Ableitromee or stage contacts of the preselector 37 and the three phases L1, L2, L3 are arranged on the load selector 1, that they through a wall 17 of the oil vessel 18th to grab.
  • Fig. 2 shows a sectional view along the line AA of the load selector 1 from Fig. 1 , wherein a plan view of the phase L2 is shown.
  • On an inner wall 20 of the oil vessel 18 for the phase L2 a plurality of plate-shaped and adapted to the contour of the inner wall 20 of the oil vessel 18 plate-shaped elements 411, which constitute an actuating element 41, respectively.
  • the electrical connection elements 39 via protective caps 30 with the Ableittitleen not shown or the step contacts not shown together, so that the plate-shaped elements 411 are supported on the inner wall 20 of the oil vessel 18.
  • the protective caps 30 rest on the outer wall 16 of the oil vessel 18.
  • Each of the plate-shaped elements 411 has at least two control cams 31 which cooperate with corresponding and provided with rollers 43 operating levers 45 of the switching segment 25 of the corresponding phase L1, L2, L3.
  • the switching tube 15 carries in each phase L1, L2, L3 a holder 50 to which the high-mass element 36, the resistor assembly 27 and the switching segment 25 are mounted.
  • the switching segment 25 is mounted in such a way that the rollers 43 of the actuating lever 45 cooperate with the corresponding control cams 31 of the plate-shaped elements 411.
  • 3 and 4 show different perspective views of the switching tube 15 of the three-phase load selector 1 after Fig. 1 , with three attached to the switching tube 15 switching segments 25, so that the load selector 1 (see FIG. 2 ) comprises the three phases L1, L2, L3.
  • resistor arrangements 27 are also attached, which are assigned to the individual phases L1, L2, L3 of the load selector 1.
  • a predetermined switching sequence is by means of the control cams 31 (see Fig. 2 ), so that a plurality of vacuum interrupters (not shown) in the individual switching segments 25 are opened or closed.
  • a flywheel 35 In the embodiment of 3 and 4 carries the switching tube 15 a flywheel 35, wherein also on the switching tube a massive element 36 is mounted. The massive element 36 can also sit on the flywheel.
  • Fig. 5 shows a perspective view of the transmission according to the invention 5, wherein parts of a transmission housing 90 are removed, in order to gain a better insight into the structure of the transmission 5.
  • An electric motor 3 is releasably attached to the transmission housing 90.
  • An unillustrated motor shaft of the electric motor 3 is connected to a pinion 53 of the transmission 5.
  • the pinion 53 engages in a gear 54 which is rigidly connected to a gear shaft 61.
  • the pinion 53 and the gear 54 form a first speed multiplier 51 which transmits the rotational motion of the motor shaft to the transmission shaft 61 at a first gear ratio.
  • the transmission shaft 61 is mounted between two bearings 67 in the transmission housing. Between the two camps 67 carries the Transmission shaft 61 designed as a worm thread teeth 55. This worm thread engages in a helical gear 56 which is rigidly connected to a drive shaft 9 for mounting an energy accumulator 13. Together, the worm thread and the helical gear 56 form a second speed translator 52 which transmits the rotational movement of the gear shaft 61 to the input shaft 9 at a second gear ratio. Since the first speed translator 51 and the second speed translator 52 are arranged in series, the effective transmission ratio of the motor shaft to the input shaft 9 is obtained by multiplying the first and second transmission ratios.
  • an extension 62 is formed with a free end 65 on the gear shaft 61.
  • the free end 65 carries in the present embodiment designed as a hexagon head, screw head, ring, etc. adapter 63 to which a commercial tool 95 can be applied.
  • the extension 62 of the transmission shaft 61 protrudes through an opening 93 so that it is not in contact with the transmission housing 90 and its free end 65 is outside the transmission housing 90. This facilitates the attachment of the tool 95 and the rotation of the tool 95th
  • the protective cap 91 covers the opening 93 of the gear housing 90 and the free end 65 of the extension 62 of the gear 61 when mounted with three fasteners 92 on the gear housing.
  • a projection 97 which is formed on the protective cap 91, projects through the opening 93 into the transmission housing 90.
  • the projection 97 may be formed as a tube.
  • the projection 97 actuates a circuit breaker 70, which is arranged in a closed circuit breaker chamber 73 of the gear housing 90.
  • the gear housing 90 can be attached to a cover 19 of the on-load tap-changer 1 or to an intermediate housing 94.
  • Fig. 6 shows a partial perspective view of the transmission housing 90 after Fig. 5 with the opening 93 formed in the gear housing 90 and the protective cap 91 for closing the same.
  • an assembly aid 99 is formed, with which a recess 98 formed on one side on the protective cap corresponds.
  • the orientation in which the protective cap 91 can be mounted on the gear housing 90 clearly defined.
  • two terminals 74 are formed, through which the circuit breaker 70 is connected to the electrical lines of the circuit 71 of the electric motor 3.
  • the circuit breaker 70 interrupts the circuit 71 as soon as the projection 97 of the protective cap 91 no longer acts on it.

Claims (9)

  1. Changeur de prises en charge (1) comprenant un moteur électrique (3) qui est couplé mécaniquement à un accumulateur d'énergie (13) du changeur de prises en charge (1) par l'intermédiaire d'une transmission (5) équipée d'un boîtier de transmission (90), la transmission (5) comprenant un arbre de transmission (61) sur lequel est formée une denture (55),
    caractérisé en ce que
    l'arbre de transmission (61) a un prolongement (62) qui comporte une extrémité libre (65) permettant la fixation d'un outil (95) permettant de tirer l'accumulateur d'énergie (13).
  2. Changeur de prises en charge (1) conforme à la revendication 1,
    dans lequel l'extrémité libre (65) du prolongement (62) dépasse d'une ouverture (93) du boîtier de transmission (90) ou est accessible par l'ouverture (93) du boîtier de transmission (90).
  3. Changeur de prises en charge (1) conforme à la revendication 1 ou 2,
    dans lequel un capuchon de protection (91) est monté amovible sur le boîtier de transmission (90), sur l'extrémité libre (62) du prolongement (62) de l'arbre de transmission (51).
  4. Changeur de prises en charge (1) conforme à la revendication 3,
    dans lequel un commutateur de protection (70) monté dans le boîtier de transmission (90) peut être actionné par le capuchon de protection (91) monté sur le boîtier de transmission (90).
  5. Changeur de prises en charge (1) conforme à la revendication 4, dans
    dans lequel sur le capuchon de protection (91) est formée une saillie (97), qui, lorsque le capuchon de protection (91) est monté sur le boîtier de transmission (90) pénètre au travers de l'ouverture (93) dans le boîtier de transmission (90) de façon à permettre d'actionner le commutateur de protection (70).
  6. Changeur de prises en charge (1) conforme à l'une des revendications précédentes,
    dans lequel le moteur électrique (3) est couplé mécaniquement à l'arbre d'entraînement (61) par l'intermédiaire d'un premier démultiplicateur de vitesse de rotation (51) et l'arbre de transmission (61) est couplé mécaniquement à l'arbre d'entrée (9) de l'accumulateur d'énergie (13) par l'intermédiaire d'un second démultiplicateur de vitesse de rotation (52).
  7. Changeur de prises en charge (1) conforme à la revendication 6,
    dans lequel le premier démultiplicateur de vitesse de rotation (51) est constitué par un pignon (53) et une roue dentée (54) couplée mécaniquement à celui-ci, le pignon (53) étant relié solidairement au moteur électrique (3) et la roue dentée (54) étant reliée solidairement à l'arbre de transmission (61).
  8. Changeur de prises en charge (1) conforme à la revendication 6 ou 7,
    dans lequel le premier multiplicateur de vitesse de rotation (52) est constitué par la denture (55) de la transmission (5) réalisée sous la forme d'un filetage hélicoïdal, et une roue à vis (56) couplée mécaniquement à celle-ci, la roue à vis (56) étant reliée solidairement à l'arbre d'entraînement (9).
  9. Procédé de réglage en fonctionnement de secours d'une position de commutation définie d'un changeur de prises en charge (1),
    caractérisé par les étapes suivantes consistant à :
    extraire un capuchon de protection (91) monté sur un boîtier de transmission (90) d'une transmission (5) destinée à un accumulateur d'énergie (13), de sorte qu'une extrémité libre (65) d'un prolongement (62) d'un arbre de transmission (61) soit accessible,
    mettre en place un outil (95) à l'extrémité libre (65) du prolongement (62) de l'arbre de transmission (61), et
    tourner l'outil (95) jusqu'à ce que l'accumulateur de force (13) soit totalement tiré.
EP14738425.9A 2013-07-16 2014-06-24 Changeur de prises en charge et procédé de réglage en mode secours d'une position de commutation définie d'un changeur de prises en charge Active EP3022757B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107553.3A DE102013107553B4 (de) 2013-07-16 2013-07-16 Laststufenschalter, Getriebe in dem Laststufenschalter und Verfahren einer notbetrieblichen Einstellung einer definierten Schaltposition in dem Laststufenschalter
PCT/EP2014/063257 WO2015007474A1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge et procédé de réglage en mode secours d'une position de commutation définie d'un changeur de prises en charge

Publications (2)

Publication Number Publication Date
EP3022757A1 EP3022757A1 (fr) 2016-05-25
EP3022757B1 true EP3022757B1 (fr) 2018-01-10

Family

ID=51176342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14738425.9A Active EP3022757B1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge et procédé de réglage en mode secours d'une position de commutation définie d'un changeur de prises en charge

Country Status (7)

Country Link
US (1) US10074492B2 (fr)
EP (1) EP3022757B1 (fr)
JP (1) JP6426733B2 (fr)
CN (1) CN105531781B (fr)
DE (1) DE102013107553B4 (fr)
UA (1) UA118565C2 (fr)
WO (1) WO2015007474A1 (fr)

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CN106098469B (zh) * 2016-08-21 2018-04-24 冯碧英 一种高压真空断路器
CN106098480B (zh) * 2016-08-28 2018-02-06 山西大唐国际临汾热电有限责任公司 一种高频响继电器
CN106710906B (zh) * 2017-01-20 2018-08-17 济南爱迪电气设备有限公司 一种配电变压器专用有载调压开关
GB2566996B (en) * 2017-09-29 2022-02-16 Hawker Siddeley Switchgear Ltd On-load tap-changer
CN108417469B (zh) * 2018-05-16 2023-09-26 浙江中凯科技股份有限公司 一种重合闸装置
CN111341576B (zh) * 2020-02-25 2021-12-17 平高集团有限公司 一种快速接地开关及操动机构
CN113113243B (zh) * 2021-03-01 2023-11-10 北京航天控制仪器研究所 一种用于有载分接开关的多机械储能装置的蓄能器以及有载分接开关

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CN102623208B (zh) * 2011-01-30 2015-11-04 上海华明电力设备制造有限公司 一种无励磁分接开关的手动驱动机构
EP2689440B1 (fr) * 2011-03-25 2016-08-17 ABB Technology AG Preselecteur pour un commutateur de prises en charge
CN202258744U (zh) 2011-04-29 2012-05-30 史伟峰 无励磁分接开关挡位控制箱
EP2535911B1 (fr) 2011-06-15 2017-03-08 ABB Research Ltd. Boîte de vitesses pour changeur de prise, changeur de prise et transformateur
CN102623210A (zh) 2012-04-01 2012-08-01 吴江远洋电气有限责任公司 具有位置指示功能的齿轮盒
BG66962B1 (bg) * 2015-05-14 2019-09-16 Стефанов Райчинов Галин Газотурбинна система с пулсиращ газов поток от двигател с вътрешно горене

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JP6426733B2 (ja) 2018-11-21
US10074492B2 (en) 2018-09-11
CN105531781B (zh) 2019-01-15
WO2015007474A1 (fr) 2015-01-22
DE102013107553A1 (de) 2015-01-22
JP2016524348A (ja) 2016-08-12
DE102013107553B4 (de) 2016-05-19
EP3022757A1 (fr) 2016-05-25
UA118565C2 (uk) 2019-02-11
CN105531781A (zh) 2016-04-27

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