CN106207823B - A kind of outer overall power distribution room of power system customer - Google Patents
A kind of outer overall power distribution room of power system customer Download PDFInfo
- Publication number
- CN106207823B CN106207823B CN201610587996.XA CN201610587996A CN106207823B CN 106207823 B CN106207823 B CN 106207823B CN 201610587996 A CN201610587996 A CN 201610587996A CN 106207823 B CN106207823 B CN 106207823B
- Authority
- CN
- China
- Prior art keywords
- distribution room
- power distribution
- blower fan
- overall power
- ventilation unit
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
- H02B7/08—Underground substations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Abstract
The present invention relates to overall power distribution room outside a kind of power system customer, including the cavity of below ground is arranged at, overall power distribution room is installed in described cavity；It is characterized in that：The outer surface of described overall power distribution room is provided with damp-proof layer, and low-voltage distribution room and high-tension distribution chamber of converting are provided with described overall power distribution room, is separated between described low-voltage distribution room and high-tension distribution chamber of converting by fire wall, safety door is provided with described fire wall；The damp-proof layer includes the epoxy resin layer positioned at internal layer, and the both sides of the epoxy resin layer are polyvinyl chloride resin layer, and the outside of polyvinyl chloride resin layer is moistureproof vapour-binding film.
Description
Technical field
The invention belongs to field of electrical equipment, is related to a kind of power system equipment, especially a kind of power system customer
Outer overall power distribution room.
Background technology
Outdoor comprehensive switchgear house is important composition element in power system, is indispensable portion during power grid construction
Divide, the appearance of outdoor comprehensive switchgear house, improve the power transmission efficiency of grid power.
But outdoor comprehensive switchgear house, because long-time is in open-air atmosphere, its service life has certain limitation,
And the construction of outdoor comprehensive switchgear house takes more land area.
Therefore, occur buried outdoor comprehensive switchgear house in the prior art, i.e., switchgear house is integrally built in bottom surface with
Under, to reduce the land use of overall power distribution room.
But buried overall power distribution room is chronically at below earth's surface, if things go on like this, certainly exist ventilation it is not smooth and
The problem of making moist, easily cause switchgear house to break down, may finally cause power network can not normal operation, potential safety hazard be present.
This is the deficiencies in the prior art part.
Therefore, for drawbacks described above of the prior art, there is provided a kind of outer overall power distribution room of power system customer is designed, with
Solve above-mentioned technical problem, be necessary.
The content of the invention
It is an object of the present invention to design a kind of power system customer in view of the above-mentioned drawbacks of the prior art, providing
Outer overall power distribution room, to solve above-mentioned technical problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of outer overall power distribution room of power system customer, including the cavity of below ground is arranged at, pacify in described cavity
Equipped with overall power distribution room；It is characterized in that：The outer surface of described overall power distribution room is provided with damp-proof layer, described overall power distribution
Interior is provided with low-voltage distribution room and high-tension distribution chamber of converting, between described low-voltage distribution room and high-tension distribution chamber of converting by fire wall every
Open, safety door is provided with described fire wall；
The damp-proof layer includes the epoxy resin layer positioned at internal layer, and the both sides of the epoxy resin layer are Corvic
Layer, the outside of polyvinyl chloride resin layer is moistureproof vapour-binding film；
The first temperature sensor, the first humidity sensor and the first drainage blower fan are provided with described low-voltage distribution room,
Described the first temperature sensor, the first humidity sensor are connected with microcontroller, and the described first drainage blower fan passes through first
Electromagnetic relay is connected to power supply, and the first described electromagnetic relay is connected to microcontroller；Described low-voltage distribution room
The first ventilation unit and the second ventilation unit are additionally provided with, the air outlet of the first drainage blower fan is stretched into the second ventilation unit, the
The air inlet of one drainage blower fan is located at low-voltage distribution chamber interior, and the air inlet of the described first drainage blower fan is provided with helix tube；
Second temperature sensor, the second humidity sensor and the second drainage blower fan are provided with described high voltage power distribution room,
Described second temperature sensor, the second humidity sensor connection microcontroller, the described second drainage blower fan pass through the second electricity
Magnetic relay is connected to power supply, and the second described electromagnetic relay is connected to microcontroller；In described high voltage power distribution room
Third venting device and the 4th ventilation unit are additionally provided with, the air outlet of the second drainage blower fan is stretched into the 4th ventilation unit, the
The air inlet of two drainage blower fans is located at high voltage power distribution chamber interior, and the air inlet of the second drainage blower fan is provided with helix tube；
Described the first ventilation unit and third venting device has identical structure, includes：Vertical duct and transverse pipe,
Overall power distribution chamber interior is stretched into one end of vertical duct, and the other end connects transverse pipe, sloping baffle is provided with the mouth of pipe of transverse pipe,
Accommodating chamber is additionally provided with described transverse pipe, horizontal screen pack is provided with the top of accommodating chamber, in the top of horizontal screen pack
It is provided with inclined filter screen；
Described the second ventilation unit and the 4th ventilation unit has identical structure, includes：Ventilation duct, described is logical
Airduct is extended to more than ground, and support frame is provided with described ventilation duct, umbrella crown is provided with described support frame；Wherein,
The air outlet of first drainage blower fan is stretched into the ventilation duct of the second ventilation unit, and the air outlet of the second drainage blower fan stretches into four-way
In the ventilation duct of wind apparatus；
Water sucting plate is provided with the four sides side wall of cavity, cavity floor is provided with annular header tank, described water sucting plate
Including inner panel, outside plate and side plate, described inner panel is connected with the edge of outside plate by side plate, and inner panel, outside plate and side plate are formed
One cavity body structure, the cavity body structure connect with described annular header tank, and the side plate positioned at water sucting plate bottom surface is arc, described
Outside plate on offer some through holes, vertical screen pack is additionally provided with the lateral wall of described outside plate；
Liquid level sensor is provided with described annular header tank, described liquid level sensor connection microcontroller is described
Annular header tank suction pump is also connected with by pipeline, described suction pump is connected to power supply electricity by the 3rd electromagnetic relay
Source.
Preferably, described fire wall includes layer glass fibrous layer, and the chlorine between layer glass fibrous layer
Change rubber layer；Burning things which may cause a fire disaster can be effectively isolated using layer glass fibrous layer and one layer of chlorinated rubber layer, separate the sprawling of the intensity of a fire.
Preferably, described microcontroller is singlechip controller；It is simple using singlechip controller exploitation, and cost
It is low.
Preferably, double-deck vertical screen pack is additionally provided with the lateral wall of described outside plate；Large granular impurity is avoided to enter
In water sucting plate.
The beneficial effects of the present invention are the outer surface of overall power distribution room sets damp-proof layer, and damp-proof layer uses asphalt mixtures modified by epoxy resin
The structure of lipid layer, polyvinyl chloride layer and moistureproof vapour-binding film, it can fully play the effect of protection against the tide；
It by setting fire wall, can effectively separate the sprawling of the intensity of a fire, reduce the burned degree of overall power distribution room；
Temperature in low-voltage distribution room is gathered by the first temperature sensor, gathering low pressure by the first humidity sensor matches somebody with somebody
Electric indoor humidity value, and be sent to controller, when temperature or humidity exceed preset value, the electromagnetism of microprocessor control first
Relay turns on, the first drainage blower fan work, by the first ventilation unit and the second ventilation unit low-voltage distribution room
Air circulation, so as to reduce the temperature of low-voltage distribution room or humidity；
Temperature value in high voltage power distribution room is gathered by second temperature sensor, high pressure is gathered by the second humidity sensor
Humidity value in switchgear house, and the temperature value collected and humidity value are sent to microcontroller, when temperature value or humidity value
During more than preset value, the conducting of the electromagnetic relay of microprocessor control second, the second drainage blower fan work, pass through third venting device
Cause the air circulation in high voltage power distribution room with the 4th ventilation unit, so as to reduce the temperature or humidity in high voltage power distribution room；
First ventilation unit and third venting device use the structure in the application, can be to entering in overall power distribution room
Air is filtered, in air can be with material after the filtering of inclined filter screen and horizontal screen pack, into accommodating chamber；Simultaneously
By setting sloping baffle, extraneous rainwater can be avoided to enter overall power distribution chamber interior；
Second ventilation unit and the 4th ventilation unit use the structure in the application, and extraneous rainwater can be avoided to enter synthesis
Inside switchgear house；
Ponding is collected by setting water sucting plate to be absorbed to the ponding around cavity, and by annular header tank,
The side plate of water sucting plate bottom surface is arc, and the ponding in water sucting plate can be easy to flow into header tank, liquid level sensor collection ring
Liquid level in shape header tank, when the water level in annular header tank is higher than preset value, the electromagnetism of microprocessor control the 3rd after
Electrical equipment turns on, and suction pump obtains electric work, the ponding in annular header tank is extracted out and is discharged to ground；By the technological means by sky
Ponding active collection around chamber to more than bottom surface, substantially ensures that the dry environment around box overall power distribution room, reduced side by side
The possibility that overall power distribution room makes moist.
As can be seen here, the present invention compared with prior art, has prominent substantive distinguishing features and significantly improved, it is implemented
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the outer overall power distribution room of power system customer provided by the invention.
Fig. 2 is the structural representation of the first ventilation unit in Fig. 1.
Fig. 3 is the structural representation of the second ventilation unit in Fig. 1.
Fig. 4 is the structural representation of damp-proof layer in Fig. 1.
Fig. 5 is the structural representation of water sucting plate in Fig. 1.
Fig. 6 is a kind of control principle drawing of the outer overall power distribution room of power system customer provided by the invention.
Wherein, 1- overall power distributions room, 2- damp-proof layers, 2.1- epoxy resin layers, 2.2- polyvinyl chloride resin layers, 2.3- are moistureproof
Vapour-binding film, 3- low-voltage distributions room, 4- high-tension distribution chamber of converting, 5- fire walls, 5.1- glass layers, 5.2- chlorinated rubber layers, 6- peaces
Air cock, the temperature sensors of 7- first, the humidity sensors of 8- first, 9- liquid level sensors, 10- first drain blower fan, 11- microcontrollers
Device, the electromagnetic relays of 12- first, 13- power supplies, the ventilation units of 14- first, the ventilation units of 15- second, 16- helix tubes,
17- second temperature sensors, the humidity sensors of 18- second, 19- suction pumps, 20- second drain blower fan, 21- the second electromagnetism relays
Device, 22- third venting devices, the ventilation units of 23- the 4th, 100- vertical ducts, 200- transverse pipes, 300- sloping baffles, 400- hold
Receive chamber, 500- transverse direction screen packs, 600- inclined filter screens, 700- ventilation ducts, 800- support frames, 900- umbrella crowns, 24- water sucting plates,
25- annular header tanks, 24.1- inner panels, 24.2- outside plates, 24.3- side plates, 24.4- through holes, the vertical screen packs of 24.5-, 26- the 3rd
Electromagnetic relay.
Embodiment
Below in conjunction with the accompanying drawings and the present invention will be described in detail by specific embodiment, and following examples are to the present invention
Explanation, and the invention is not limited in implementation below.
As shown in Figures 1 to 6, the outer overall power distribution room of a kind of power system customer provided by the invention, including it is arranged at ground
Following cavity, overall power distribution room 1 is installed in described cavity, the outer surface of described overall power distribution room 1 is provided with protection against the tide
Layer 2, low-voltage distribution room 3 and high-tension distribution chamber of converting 4, described low-voltage distribution room 3 and high pressure are provided with described overall power distribution room 1
Separated between switchgear house 4 by fire wall 5, safety door 6 is provided with described fire wall 5；
The damp-proof layer 2 includes the epoxy resin layer 2.1 positioned at internal layer, and the both sides of the epoxy resin layer 2.1 are polychlorostyrene
Ethylene resin layer 2.2, the outside of polyvinyl chloride resin layer 2.2 is moistureproof vapour-binding film 2.3；
The first temperature sensor 7, the first humidity sensor 8 and the first drainage wind are provided with described low-voltage distribution room 3
Machine 10, the first described temperature sensor 7, the first humidity sensor 8 are connected with microcontroller 11, the described first drainage blower fan
10 are connected to power supply 13 by the first electromagnetic relay 12, and the first described electromagnetic relay 12 is connected to microcontroller
11；Described low-voltage distribution room 3 is additionally provided with the first ventilation unit 14 and the second ventilation unit 15, and the first drainage blower fan 10 goes out
Air port is stretched into the second ventilation unit 15, and the air inlet of the first drainage blower fan is located at low-voltage distribution chamber interior, and described first draws
The air inlet of flow fan is provided with helix tube 16；
Second temperature sensor 17, the second humidity sensor 18 and the second drainage are provided with described high-tension distribution chamber of converting 4
Blower fan 20, described second temperature sensor 17, the second humidity sensor 18 connection microcontroller 11, the described second drainage wind
Machine 20 is connected to power supply 13 by the second electromagnetic relay 21, and the second described electromagnetic relay 21 is connected to microcontroller
11；The ventilation unit 23 of third venting device 22 and the 4th is additionally provided with described high-tension distribution chamber of converting 4, the second drainage blower fan 20
Air outlet is stretched into the 4th ventilation unit 23, and the air inlet of the second drainage blower fan 20 is located at high voltage power distribution chamber interior, and described second
The air inlet of drainage blower fan 20 is provided with helix tube 16；
The first described ventilation unit 14 and third venting device 22 have identical structure, include：The He of vertical duct 100
Overall power distribution chamber interior is stretched into transverse pipe 200, one end of vertical duct, and the other end connects transverse pipe, set at the mouth of pipe of transverse pipe
There is sloping baffle, accommodating chamber 400 is additionally provided with the transverse pipe described in 300, horizontal screen pack is provided with the top of accommodating chamber
500, inclined filter screen 600 is provided with above horizontal screen pack；
The second described ventilation unit 15 and the 4th ventilation unit 23 have identical structure, include：Ventilation duct 700,
Described ventilation duct is extended to more than ground, and support frame 800 is provided with described ventilation duct, is set on described support frame 800
It is equipped with umbrella crown 900；Wherein, the air outlet of the first drainage blower fan is stretched into the ventilation duct of the second ventilation unit, the second drainage blower fan
Air outlet stretch into the ventilation duct of the 4th ventilation unit；
Water sucting plate 24 is provided with the four sides side wall of cavity, cavity floor is provided with annular header tank 25, described suction
Water plate includes inner panel 24.1, outside plate 24.2 and side plate 24.3, and described inner panel is connected with the edge of outside plate by side plate, inner panel,
Outside plate and side plate form a cavity body structure, and the cavity body structure connects with described annular header tank 25, positioned at water sucting plate bottom surface
Side plate be arc, some through holes 24.4 are offered on described outside plate, are additionally provided with the lateral wall of described outside plate perpendicular
To screen pack 24.5；
Liquid level sensor 9 is provided with described annular header tank 25, described liquid level sensor 9 connects microcontroller,
Described annular header tank is also connected with suction pump 19 by pipeline, and described suction pump 19 is connected by the 3rd electromagnetic relay 26
It is connected to power supply 13.
In the present embodiment, described fire wall 5 includes layer glass fibrous layer 5.1, and positioned at layer glass fibrous layer
Between chlorinated rubber layer 5.2；Burning things which may cause a fire disaster, cut-off fire can be effectively isolated using layer glass fibrous layer and one layer of chlorinated rubber layer
The sprawling of gesture.
In the present embodiment, described microcontroller is singlechip controller；It is simple using singlechip controller exploitation, and
Cost is low.
In the present embodiment, double-deck vertical screen pack is additionally provided with the lateral wall of described outside plate；Avoid large granular impurity
Into in water sucting plate.
Disclosed above is only the preferred embodiment of the present invention, but the present invention is not limited to this, any this area
What technical staff can think does not have creative change, and some improvement made without departing from the principles of the present invention and
Retouching, should all be within the scope of the present invention.
Claims (4)
1. a kind of outer overall power distribution room of power system customer, including the cavity of below ground is arranged at, installed in described cavity
There is overall power distribution room；It is characterized in that：The outer surface of described overall power distribution room is provided with damp-proof layer, described overall power distribution room
Inside be provided with low-voltage distribution room and high-tension distribution chamber of converting, between described low-voltage distribution room and high-tension distribution chamber of converting by fire wall every
Open, safety door is provided with described fire wall；
The damp-proof layer includes the epoxy resin layer positioned at internal layer, and the both sides of the epoxy resin layer are polyvinyl chloride resin layer,
The outside of polyvinyl chloride resin layer is moistureproof vapour-binding film；
The first temperature sensor, the first humidity sensor and the first drainage blower fan are provided with described low-voltage distribution room, it is described
The first temperature sensor, the first humidity sensor be connected with microcontroller, the described first drainage blower fan passes through the first electromagnetism
Relay is connected to power supply, and the first described electromagnetic relay is connected to microcontroller；Described low-voltage distribution room is also set
The first ventilation unit and the second ventilation unit are equipped with, the air outlet of the first drainage blower fan is stretched into the second ventilation unit, and first draws
The air inlet of flow fan is located at low-voltage distribution chamber interior, and the air inlet of the described first drainage blower fan is provided with helix tube；
Second temperature sensor, the second humidity sensor and the second drainage blower fan are provided with described high voltage power distribution room, it is described
Second temperature sensor, the second humidity sensor connection microcontroller, described second drainage blower fan by the second electromagnetism after
Electrical equipment is connected to power supply, and the second described electromagnetic relay is connected to microcontroller；Also set in described high voltage power distribution room
Third venting device and the 4th ventilation unit are equipped with, the air outlet of the second drainage blower fan is stretched into the 4th ventilation unit, and second draws
The air inlet of flow fan is located at high voltage power distribution chamber interior, and the air inlet of the second drainage blower fan is provided with helix tube；
Described the first ventilation unit and third venting device has identical structure, includes：Vertical duct and transverse pipe, vertically
Overall power distribution chamber interior is stretched into one end of pipe, and the other end connects transverse pipe, sloping baffle is provided with the mouth of pipe of transverse pipe, described
Transverse pipe in be additionally provided with accommodating chamber, horizontal screen pack is provided with the top of accommodating chamber, horizontal screen pack top set
There is inclined filter screen；
Described the second ventilation unit and the 4th ventilation unit has identical structure, includes：Ventilation duct, described ventilation duct
Extend to more than ground, support frame is provided with described ventilation duct, umbrella crown is provided with described support frame；Wherein, first
The air outlet of drainage blower fan is stretched into the ventilation duct of the second ventilation unit, and the air outlet of the second drainage blower fan stretches into the 4th ventilation dress
In the ventilation duct put；
Water sucting plate is provided with the four sides side wall of cavity, cavity floor is provided with annular header tank, and described water sucting plate includes
Inner panel, outside plate and side plate, described inner panel are connected with the edge of outside plate by side plate, and inner panel, outside plate and side plate form a chamber
Body structure, the cavity body structure connect with described annular header tank, and the side plate positioned at water sucting plate bottom surface is arc, and described is outer
Some through holes are offered on plate, vertical screen pack is additionally provided with the lateral wall of described outside plate；
Liquid level sensor, described liquid level sensor connection microcontroller, described ring are provided with described annular header tank
Shape header tank is also connected with suction pump by pipeline, and described suction pump is connected to power supply by the 3rd electromagnetic relay.
A kind of 2. outer overall power distribution room of power system customer according to claim 1, it is characterised in that：Described fire wall
Including layer glass fibrous layer, and the chlorinated rubber layer between layer glass fibrous layer.
A kind of 3. outer overall power distribution room of power system customer according to claim 1 or 2, it is characterised in that：Described is micro-
Controller is singlechip controller.
A kind of 4. outer overall power distribution room of power system customer according to claim 3, it is characterised in that：Described outside plate
Double-deck vertical screen pack is additionally provided with lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610587996.XA CN106207823B (en) | 2016-07-25 | 2016-07-25 | A kind of outer overall power distribution room of power system customer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610587996.XA CN106207823B (en) | 2016-07-25 | 2016-07-25 | A kind of outer overall power distribution room of power system customer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106207823A CN106207823A (en) | 2016-12-07 |
| CN106207823B true CN106207823B (en) | 2017-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610587996.XA Expired - Fee Related CN106207823B (en) | 2016-07-25 | 2016-07-25 | A kind of outer overall power distribution room of power system customer |
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| Country | Link |
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| CN (1) | CN106207823B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038959B (en) * | 2019-12-11 | 2022-09-27 | 东营市东营高新区配售电股份有限公司 | Box-type substation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082288A (en) * | 2005-09-12 | 2007-03-29 | Toshiba Corp | High-voltage transforming facility |
| CN202523988U (en) * | 2012-03-07 | 2012-11-07 | 常州帕斯菲克自动化技术有限公司 | Novel anti-moisture and anti-condensation device in electrical cabinet |
| CN104393519A (en) * | 2014-11-18 | 2015-03-04 | 华翔翔能电气股份有限公司 | Fully-buried steel structural box-type transformer substation |
| CN104731138A (en) * | 2015-02-16 | 2015-06-24 | 国家电网公司 | Temperature and humidity control device for transformer substation |
| CN205141491U (en) * | 2015-11-20 | 2016-04-06 | 郑州博源电器成套设备有限公司 | Bury to intelligence pre -installation formula transformer substation |
-
2016
- 2016-07-25 CN CN201610587996.XA patent/CN106207823B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082288A (en) * | 2005-09-12 | 2007-03-29 | Toshiba Corp | High-voltage transforming facility |
| CN202523988U (en) * | 2012-03-07 | 2012-11-07 | 常州帕斯菲克自动化技术有限公司 | Novel anti-moisture and anti-condensation device in electrical cabinet |
| CN104393519A (en) * | 2014-11-18 | 2015-03-04 | 华翔翔能电气股份有限公司 | Fully-buried steel structural box-type transformer substation |
| CN104731138A (en) * | 2015-02-16 | 2015-06-24 | 国家电网公司 | Temperature and humidity control device for transformer substation |
| CN205141491U (en) * | 2015-11-20 | 2016-04-06 | 郑州博源电器成套设备有限公司 | Bury to intelligence pre -installation formula transformer substation |
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| Publication number | Publication date |
|---|---|
| CN106207823A (en) | 2016-12-07 |
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