KR20180064641A - Device for driving hot cell shielding door - Google Patents

Device for driving hot cell shielding door Download PDF

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Publication number
KR20180064641A
KR20180064641A KR1020160164752A KR20160164752A KR20180064641A KR 20180064641 A KR20180064641 A KR 20180064641A KR 1020160164752 A KR1020160164752 A KR 1020160164752A KR 20160164752 A KR20160164752 A KR 20160164752A KR 20180064641 A KR20180064641 A KR 20180064641A
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KR
South Korea
Prior art keywords
gear
driving
bevel gear
shielding
door
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KR1020160164752A
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Korean (ko)
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KR101880061B1 (en
Inventor
조일제
이원경
이은표
Original Assignee
한국원자력연구원
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Priority to KR1020160164752A priority Critical patent/KR101880061B1/en
Publication of KR20180064641A publication Critical patent/KR20180064641A/en
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00Shielded cells or rooms
    • G21F7/005Shielded passages through walls; Locks; Transferring devices between rooms

Abstract

The present invention relates to a shielding door driving device between hot cells, which operates a shielding door for opening and closing a transfer passage provided in a shielding wall between two hot cells. A door opening and closing unit comprises: a pulling rope movably pulling a shielding door in a sliding manner; a winding drum winding the pulling rope; a first driven gear provided on a shaft of the winding drum; a first drive gear driving the driven gear; a first drive motor driving the drive gear; an interlocking gear engaged with the first drive gear for manual operation of the first driven gear; and a first manual lever driving the interlocking gear in a malfunction of the first drive motor. Therefore, the heavy shielding door is able to be opened and closed by using a low-output electric motor. The opening and closing operation is able to be performed manually and easily when the electric motor fails. The degree of sealing of the shielding door is able to be increased.

Description

TECHNICAL FIELD [0001] The present invention relates to a door driving device for a hot cell,

The present invention relates to a shielded door driving apparatus for a hot cell, and more particularly, to a shielded door driving apparatus for driving a shielded door for opening and closing a transfer passage between an inert gas-air atmosphere hot cell handling nuclear material.

Generally, a shielding wall is provided between an air atmosphere hot cell for treating a nuclear material and an inert-air atmosphere hot cell, and a conveyance passage for conveying an object between the two hot cells to the shielding wall is provided. The conveyance passage is opened / .

Conventionally, a small size of a hot cell or a small-sized material such as a small-sized object is small in the size of a shielding door that opens and closes, so that a remote controller can be used when opening or closing. However, In order to transport a large object, the inner diameter of the conveyance passage must be large, but moreover, the shielding door for opening and closing it must be large. In this case, the output of the electric motor for opening / closing the shielding door due to the load of the shielding door has to be increased.

In addition, since a pneumatic cylinder or a lever mechanism is used as a mechanism for sealing the shielding door by tightly closing the shielding wall, when the pneumatic cylinder is used, it is not possible to open or close the shielding door by manual operation in case of failure. There is a problem that it is difficult to maintain the closed door of the shielding door and it can affect the hot cell of the inert gas atmosphere in the hot cell. See Patent Document 2.

On the other hand, when the lever mechanism is used, it is difficult to seal the entirety of the shielding door at a constant pressure, and when the lever is operated, an unreasonable load is applied to the remote control.

Korean Patent Registration No. 10-1101242 Korean Patent Publication No. 10-2015-0080307

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional shielded door driving apparatus for a hot cell as described above and it is possible to open and close a heavy shielding door by using an electric motor of low output, And to provide a shielded door driving device for a hot cell that can increase the degree of sealing of the shielded door.

In order to achieve the above object, a shielded door driving apparatus for a hot cell according to the present invention is a shielded door driving apparatus for operating a shielding door for opening and closing a conveyance passage provided in a shielding wall between two hot cells, A first driving gear for driving the first driven gear, a second driving gear for driving the first driven gear, a second driving gear for driving the first driven gear, a second driving gear for driving the second driven gear, A first driving motor for driving the first driving gear, an interlocking gear meshed with the first driving gear for manual operation of the first driven gear, and a second interlocking gear for driving the interlocking gear in a malfunction of the first driving motor And a door opening / closing unit including a manual lever.

In order to achieve the above object, a shielded door driving apparatus for a hot cell according to the present invention is a shielded door driving apparatus for operating a shielding door for opening and closing a conveyance passage provided in a shielding wall between two hot cells, A cam member that presses the shielding door toward the shielding wall, and a cam driver that rotates the cam member.

As described above, according to the shielded door driving apparatus for hot cells according to the present invention, a heavy-weight shielding door installed in a middle and large conveying passage capable of transferring a middle device and a medium substance among hot cells can be used as a low- So that it can be opened and closed.

According to the present invention, it is possible to improve the sealing function of the shielding door, thereby strictly restricting the concentration of oxygen and moisture, thereby minimizing the oxygen and moisture concentration increase in the hot gas atmosphere hot gas operating in the inert gas atmosphere.

According to the present invention, when the electric motor fails, there is an effect that maintenance can be easily performed by remote operation manually using a remote controller.

1 is a schematic plan view showing a shielded door driving apparatus for a hot cell according to an embodiment of the present invention,
Fig. 2 is a left side view of Fig. 1 showing the door opening and closing unit of the shielded door driving apparatus shown in Fig. 1,
3 is a cross-sectional side view taken along line AA of FIG. 2,
FIG. 4 is a side view showing an operating state of the door opening / closing unit shown in FIG. 2;
Fig. 5 is a partially enlarged view of Fig. 1 showing the door sealing unit shown in Fig. 1,
Fig. 6 is a left side view of Fig. 5,
7 is a cross-sectional side view taken along line BB in Fig. 6,
8 is a side view showing an operating state of the door sealing unit shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a shielded door driving apparatus for a hot cell according to an embodiment of the present invention includes a plurality of hot cells 101 and 102, which open and close a feed passage 104 provided in a shielding wall 103 between two hot cells 101 and 102 And a door closing unit (200) for operating the shielding door (1). Reference numeral 101 denotes an inactive gas atmosphere hot cell, and reference numeral 102 denotes an air atmosphere hot cell.

1 to 4, the door opening / closing unit includes a pulling rope 110 for pulling the shielding door 1 movably in a sliding manner, a winding drum 120 for winding the pulling rope 110, A first driving gear 130 for driving the first driven gear 121 and a first driving gear 130 for driving the first driving gear 130. The first driving gear 130 drives the first driven gear 121, A first driving gear 130 coupled to the first driving gear 130 for manual operation of the first driving gear 121 and a second driving gear 130 coupled to the first driving gear 130 for manual operation of the first driving gear 121, And a first passive lever 160 for driving the gear 150.

The shielding door 1 is slidably movable along the guide rail 2 shown in Fig. 1, and is vertically movable by the door opening / closing unit 100 as shown in Figs. 2, 4 and 8 do.

A first upper limit sensor 271 and a first lower limit sensor 272 are provided at upper and lower portions of the shielding door 1 for limiting the stroke of movement of the shielding door 1. And outputs an electric signal for stopping the first driving motor 140 when the shielding door 1 contacts the first upper limit sensor 271 or the first lower limit sensor 272. [ The first driving motor 140 moves the shielding door 1 by driving the first driven gear 121 and outputs a stop signal from the first upper limit sensor 271 or the first lower limit sensor 272, The upper limit and the lower limit of the stroke of the shielding door 1 can be limited by stopping the operation.

A draw rope 110 is connected to the upper end of the shielding door 1 and the draw rope 110 is supported by a plurality of support rollers 111. One end of the draw rope 110 is wound around the take- Respectively.

On the other hand, the weight balance 115 is connected to the upper end of the shielding door 1 by a balance rope 116 separately from the pull rope 110. The weight balance 115 reduces the pulling force of the shielding door 1 and minimizes the output of the first driving motor 140.

The first driven gear 121 and the first drive gear 130 are provided as worm gears and bevel gears to rotate the winding drum 120. Since the reduction ratio is large due to the combination of the worm gear and the bevel gear, The output of the first drive motor 140 can be minimized.

The first driven gear 121 is driven by the worm wheel of the worm gear with the first drive worm 131 of the first drive gear 130 described later.

The first driving gear 130 includes a first driving worm 131 that is engaged with the first driven gear 121, a first bevel gear 133 that axially rotates the first driving worm 131, And a second bevel gear 134 engaged with the first bevel gear 133.

The first driving worm 131 rotates the first driven gear 121 by a worm that is engaged with the first driven gear 121 which is a worm wheel.

The first bevel gear 133 is provided on the worm axis 132 of the first driving worm 131 and rotates integrally with the first driving worm 131.

The second bevel gear 134 rotates integrally with the drive shaft 141 of the first drive motor 140 to drive the first bevel gear 133, The driven gear 121 is driven.

A third bevel gear 135 is provided on the driving shaft 141 of the first driving motor 140 to engage with the interlocking gear 150. The third bevel gear 135 is spaced apart from the second bevel gear 134 by a predetermined distance on a driving shaft 141 of the first driving motor 140.

The third bevel gear 135 rotates integrally with the driving shaft 141 of the first driving motor 140 and is operated by the first driving motor 140 or by the external As shown in Fig. That is, the third bevel gear 135 can selectively transmit the power generated by the first driving motor 140 and the external power generated by the interlock gear 150. When the first driving motor 140 operates normally, the third bevel gear 135 rotates integrally with the driving shaft 141 of the first driving motor 140 to drive the interlocking gear 150 External power is transmitted to the third bevel gear 135 through the interlock gear 150 when the first drive motor 140 malfunctions.

The interlocking gear 150 meshes with the third bevel gear 135 during idling of the first driving motor 140, and operates as idle gear to idle. The first passive lever 160 is detachably coupled to the gear shaft 151 of the interlocking gear 150 when the first driving motor 140 malfunctions.

A first spline shaft 152 is provided at the tip of the gear shaft 151 of the interlocking gear 150 and a first boss 152 splined to the first spline shaft 152 is connected to the first passive lever 160, A portion 161 is formed. The first boss portion 161 is splined to the first spline shaft 152 so that the interlocking gear 150 is detachably coupled to the gear shaft 151 of the interlocking gear 150.

When the first manual lever 160 is rotated, the interlocking gear 150 rotates to drive the driving shaft 141 of the first driving motor 140 through the third bevel gear 135, (120). The first manual lever 160 can be operated by a remote controller provided in the hot cell. The remote controller is provided to remotely perform various operations for manual operation of other devices in the hot cell, and utilizes what has been widely used in the past, so a detailed description thereof will be omitted.

5 to 8, the door sealing unit includes a cam member 210 that presses the shielding door 1 toward the shielding wall 103, and a cam driving unit that rotates the cam member 210 have.

A plurality of cam members 210 are provided at predetermined intervals along the opening and closing directions of the shielding door 1 and the cam members 210 are interlocked with each other by a link member 260. A link bracket 261 is fixedly coupled to the cam member 210 and the link member 260 is linked to a distal end of the link bracket 261 by a connection pin 262.

The cam driving unit includes a second driven gear 220 for axially rotating the cam member 210, a second driving gear 230 for driving the second driven gear 220, And a second manual lever 250 for driving the second driving gear 230 when the second driving motor 240 malfunctions.

The second driven gear is fixed to the camshaft 211 of the cam member 210 by an annular worm wheel as shown in Fig. Therefore, the cam member 210 is rotated by the pivotal movement of the second driven gear 220. [

The link member 260 may be linked to the second driven gear 220 as shown in FIG. 7, and may be coupled to the cam shaft 211 of the cam member 210 as shown in FIG. And may be connected through a link bracket 261.

The second driving gear 230 includes a second driving worm 231 engaged with the second driven gear 220, a fourth bevel gear 232 provided on the axis of the second driving worm 231, A fifth bevel gear 233 engaged with the fourth bevel gear 232, a sixth bevel gear 235 provided on the gear shaft 234 of the fifth bevel gear 233, An eighth bevel gear 238 provided on the gear shaft 237 of the seventh bevel gear 236 and an eighth bevel gear 238 meshing with the eighth bevel gear 238, And a ninth bevel gear 239 is provided.

6, the ninth bevel gear 239 is provided on the drive shaft 241 of the second drive motor 240 to drive the second drive motor 240 to the eighth bevel gear 238). The eighth bevel gear 238 is coaxially and axially rotatable integrally with the seventh bevel gear 236 to transmit the power of the second driving motor 240 to the sixth bevel gear 235 . The sixth bevel gear 235 is coaxially and axially rotatable integrally with the fifth bevel gear 233 to transmit the power of the second drive motor 240 to the fourth bevel gear 232 do.

The second driven gear 220 as a worm gear includes the fourth bevel gear 232, the fifth bevel gear 233, the sixth bevel gear 235, the seventh bevel gear 236, The output of the second driving motor 240 can be minimized because the reduction ratio is large due to the engagement of the gear 238 and the ninth bevel gear 239. [

When the second driving motor 240 is operated, the ninth bevel gear 239 shown in FIG. 6 rotates about its axis and rotates the eighth bevel gear 238 shown in FIG. 5, And a seventh bevel gear 236 provided coaxially with the eighth bevel gear 238 are integrally rotated. As shown in FIG. 5, when the seventh bevel gear 236 is rotated, the sixth bevel gear 235 engaged with the sixth bevel gear 235 rotates, and at the same time, the fifth bevel gear 233, . 6, the fifth bevel gear 233 rotates the fourth bevel gear 232 and the second bevel gear 232 coaxially disposed with the fourth bevel gear 232, The second driven gear 220 which is a worm wheel rotates about the camshaft 211 of the cam member 210 while rotating. When the second driven gear 220 is pivoted, the link member 260 moves integrally to pivotally move the cam members 210 together.

Fig. 7 shows a state in which the cam member 210 presses the shielding door 1, and Fig. 8 shows a state in which the shielding door 1 is not pressed. A second upper limit sensor 273 is provided above the second driven gear 220 and a second lower limit sensor 274 is provided below the second driven gear 220.

The second upper limit sensor 273 outputs a signal for limiting the upper limit of the swing angle of the second driven gear 220 to the second drive motor 240 and the second lower limit sensor 274 outputs a signal for limiting the upper limit of the swing angle of the second driven gear 220 to the lower limit To the second driving motor 240, thereby limiting the swing angle of the cam member 210. [0054]

The cam member 210 presses the shielding door 1 to increase the degree of sealing when the thick long axis portion is positioned toward the shielding door 1 with the camshaft 211 as a center, The shielding door 1 is released from the pressure of the shielding door 1, so that the shielding door 1 can perform the elevating operation for opening and closing.

The shielding wall 103 is provided with an airtight groove 281 for airtightness with the shielding door 1 and a hermetic member 282 such as an O-ring is inserted into the airtight groove 281, The airtightness can be further increased when it is pressed toward the wall 103.

The second spline shaft 251 is provided on the gear shaft 237 of the seventh bevel gear 236 and the eighth bevel gear 238 and the second spline shaft 251 The second boss portion 252 is spline-coupled to the second boss portion 252. The second boss portion 252 is splined to the second spline shaft 251 so that the second manual lever 250 is detachably coupled to the gear shaft 237 of the seventh bevel gear.

When the second manual lever 250 is rotated, the gear shaft 237 of the seventh bevel gear rotates to rotate the cam member 210 through the eighth bevel gear 238 and the seventh bevel gear 236, The camshaft 211 of the camshaft 211 is driven. The second manual lever 250 can be operated by a remote controller provided in the hot cell, like the first manual lever 160.

The second manual lever 250 may be provided on the gear shafts 234 of the fifth bevel gear 233 and the sixth bevel gear 235. 5, the shielding wall 103 may be provided adjacent to the fifth bevel gear 233 and the sixth bevel gear 235 to provide a space for rotating the second manual lever 250 The seventh bevel gear 236 and the eighth bevel gear 238 are added to secure the operating space of the second manual lever 250 by switching the power transmission direction by 90 degrees. Therefore, when there is no contact problem with the shielding wall 103 or when the second driven gear 220 shown in FIG. 5 is positioned with the cam member 210 as the center, It is also possible to couple the lever 250 to the fifth bevel gear 233 and the gear shaft 234 of the sixth bevel gear 235.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that the modification or the modification is possible by the person.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Door opening / closing unit 110: Towing rope
111: Support roller 115: Weight balance
116: balance rope 120: winding drum
121: First driven gear 130: First driven gear
131: first drive worm 132: worm shaft of the first drive worm
133: first bevel gear 134: second bevel gear
135: third bevel gear 140: first drive motor
141: driving shaft of the first driving motor 150: interlocking gear
151: gear shaft of interlocking gear 152: first spline shaft
160: first manual lever 161: first boss portion
200: door sealing unit 210: cam member
211: camshaft 220: second driven gear
230: second driving gear 231: second driving worm
232: fourth bevel gear 233: fifth bevel gear
234: gear shaft of the fifth-level gear 235: sixth bevel gear
236: Seventh bevel gear 237: Gear shaft of the seventh bevel gear
238: 8th bevel gear 239: 9th bevel gear
240: second drive motor 241: drive shaft of the second drive motor
250: Second manual lever 251: Second spline shaft
252: second boss portion 260: link member
261: Link bracket 262: Connection pin
271: first upper limit sensor 272: first lower limit sensor
273: second upper limit sensor 274: second lower limit sensor
281: airtight groove 282: airtight member

Claims (11)

  1. A shielding door driving apparatus for a hot cell, which operates a shielding door for opening and closing a transfer passage provided in a shielding wall between two hot cells,
    A pulling rope for movably pulling the shielded door in a sliding manner;
    A winding drum for winding the tow rope;
    A first driven gear provided on an axis of the winding drum;
    A first driving gear for driving the first driven gear;
    A first driving motor for driving the first driving gear; And
    An interlocking gear engaged with the first drive gear for manual operation of the first driven gear;
    And a door opening / closing unit including the door opening and closing unit.
  2. The method according to claim 1,
    A first manual lever for driving the interlocking gear when the first driving motor malfunctions;
    Further comprising: a shielding unit for shielding the hot cells.
  3. 3. The automatic transmission according to claim 2,
    Wherein the interlocking gear is detachably coupled to the gear shaft of the interlocking gear.
  4. The method according to claim 1,
    Wherein the first driven gear is a worm gear, and the first drive gear and the interlocking gear are bevel gears.
  5. 5. The shift control apparatus according to claim 4,
    A first bevel gear for driving the first driven gear;
    A second bevel gear provided on a driving shaft of the first driving motor and engaged with the first bevel gear; And
    A third bevel gear provided on the driving shaft of the first driving motor so as to be spaced apart from the second bevel gear and meshed with the interlock gear;
    Wherein the shielding door driving device comprises:
  6. A shielding door driving apparatus for a hot cell, which operates a shielding door for opening and closing a transfer passage provided in a shielding wall between two hot cells,
    A cam member for pressing the shielding door toward the shielding wall; And
    A cam driving unit for axially rotating the cam member;
    And a door hermetically sealed unit including the door hermetically sealed unit.
  7. 7. The apparatus according to claim 6,
    A second driven gear which is provided on a camshaft of the cam member and rotates the cam member;
    A second drive gear for driving the second driven gear;
    A second drive motor for driving the second drive gear; And
    A second manual lever for driving the second drive gear when the second drive motor malfunctions;
    Further comprising: a shielding unit for shielding the hot cells.
  8. 8. The method of claim 7,
    The second driven gear is a worm wheel,
    The second drive gear
    A second drive worm engaged with the second driven gear;
    A fourth bevel gear provided on an axis of the second drive worm;
    A fifth bevel gear engaged with the fourth bevel gear;
    A sixth bevel gear provided on a gear shaft of the fifth bevel gear;
    A seventh bevel gear engaged with the sixth bevel gear;
    An eighth bevel gear provided on a gear shaft of the seventh bevel gear; And
    A ninth bevel gear provided on a driving shaft of the second driving motor and engaged with the eighth bevel gear;
    Wherein the shielding door driving device comprises:
  9. 9. The automatic transmission according to claim 8,
    And the second bevel gear is provided on a gear shaft of the seventh bevel gear.
  10. The method according to claim 6,
    Wherein a plurality of the cam members are provided at predetermined intervals along the opening / closing direction of the shielding door,
    And a link member for interlocking the cam members.
  11. 11. The apparatus according to claim 10,
    And the second driven gear is linked to the second driven gear.
KR1020160164752A 2016-12-06 2016-12-06 Device for driving hot cell shielding door KR101880061B1 (en)

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KR1020160164752A KR101880061B1 (en) 2016-12-06 2016-12-06 Device for driving hot cell shielding door

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KR1020160164752A KR101880061B1 (en) 2016-12-06 2016-12-06 Device for driving hot cell shielding door

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KR101880061B1 KR101880061B1 (en) 2018-07-20

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033918A (en) * 1983-08-04 1985-02-21 Kenichi Horikawa Opening and closing device for sluice gate
JPH06280445A (en) * 1993-03-26 1994-10-04 Hitachi Zosen Eng Kk Airtight door opening closing device
KR100595470B1 (en) * 2005-02-02 2006-07-03 케이비이엔지주식회사 Opening and shutting apparatus for radiation shielding door
KR100775762B1 (en) * 2006-06-28 2007-11-09 한국수력원자력 주식회사 Rear door system for transferring hot cell equipment
KR101101242B1 (en) 2010-03-17 2012-01-04 한국수력원자력 주식회사 Small equipment in-cell transfer lock system
KR20150080307A (en) 2013-12-31 2015-07-09 한국원자력연구원 System for material transfer between hot cells

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100595476B1 (en) * 2005-02-02 2006-07-03 케이비이엔지주식회사 Opening and shutting apparatus for radiation shielding door
KR101193997B1 (en) * 2010-06-25 2012-10-24 한국과학기술원 Radioactive rays shielding door assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033918A (en) * 1983-08-04 1985-02-21 Kenichi Horikawa Opening and closing device for sluice gate
JPH06280445A (en) * 1993-03-26 1994-10-04 Hitachi Zosen Eng Kk Airtight door opening closing device
KR100595470B1 (en) * 2005-02-02 2006-07-03 케이비이엔지주식회사 Opening and shutting apparatus for radiation shielding door
KR100775762B1 (en) * 2006-06-28 2007-11-09 한국수력원자력 주식회사 Rear door system for transferring hot cell equipment
KR101101242B1 (en) 2010-03-17 2012-01-04 한국수력원자력 주식회사 Small equipment in-cell transfer lock system
KR20150080307A (en) 2013-12-31 2015-07-09 한국원자력연구원 System for material transfer between hot cells

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