JPH0239919Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a ventilation device for preventing dew condensation on a steel carrier.

Conventional technology When a type of hatch cover is extended for winding on a steel material carrier, the upper surface of the hatch cover is prone to condensation due to rapid temperature changes. Upon contact, dew adheres to the lower surface of the hatch cover, and when the hatch cover is extended again, the dew on the lower surface of the hatch falls downward into the hold, passes through the hold curtain, and adheres to the steel material of the cargo. Because the dew that adhered to the ship caused rust on the steel materials, reducing quality, it was necessary to install a ventilation system in the hold to prevent condensation.

Previously, outside air was flowed into the hold from the stern to the bow using a mobile ventilator, but the air only flowed inside the hold below the hold curtain, and the air flow did not hit the underside of the hatch cover, where dew had adhered. However, dew remained on the underside of the hatch cover, and the dew fell onto the steel material of the cargo, causing rust.

Problems to be Solved by the Invention In order to solve the above-mentioned problems, the invention provides ventilation holes in the hatch coaming on the bow and stern sides and the curtains in the hold. It is an object of the present invention to provide a dew condensation prevention ventilation device for a steel material carrier that has high dew condensation prevention properties by providing ducts each connected to a ventilation port.

Means for Solving the Problems In order to achieve the above object, the present invention provides a steel material carrier having a hold curtain that horizontally partitions the hold. A ventilation hole is provided in the coaming, and a ventilation hole is provided on the bow side of the lower part of the hold, sandwiching the curtain, and a duct with a mobile ventilator connects the upper and lower bow side ventilation holes, and the other side is connected to the top and bottom of the bow side. A ventilation hole is provided in the hatch coaming on the bow side, and a ventilation hole is provided on the stern side in the lower part of the hold by sandwiching the curtain, and the upper and lower ventilation holes on the stern side are connected by a duct having a mobile ventilation, and partitioned by the curtain. The upper and lower parts of the hold were connected by the ducts on the bow and stern sides, respectively, to enable circulation of ventilation.

Operation When both the mobile ventilators in the bow and stern ducts are activated, the air in the lower part of the hold below the hold curtain is moved from the ventilation hole provided on the stern side to the mobile ventilator in the duct on the stern side. is inhaled and passes through the duct. The air passes through the mobile ventilator and becomes an air stream, and the air stream is blown out from the vent provided in the hatch coaming on the bow side above the curtain to the upper part of the hold above the hold curtain, and hits the lower surface of the hatch cover. Blow off and remove the dew that has adhered to the surface. The air flow moves from the stern side to the bow side in the upper part of the hold above the curtain, is sucked in by a mobile ventilator in the bow side duct from a ventilation hole provided in the bow side hatch coaming, and passes through the duct. The airflow passes through the mobile ventilator on the bow side, is blown out from the vent provided on the bow side of the lower part of the hold below the curtain, and hits the steel material of the cargo, causing damage to the steel material. Blow away the dew that has adhered to it. The airflow moves from the bow side to the stern side in the lower part of the hold below the curtain, is sucked into the duct on the stern side, and repeats the above series of steps, and the airflow moves from the bow side to the stern side. The duct is used to circulate between the upper and lower parts of the hold, which are partitioned by the curtain.

Embodiment An embodiment of the present invention will be described with reference to FIG. In a steel material carrier, a hold curtain 3 made of waterproof cloth that can be opened and closed in a horizontal direction is extended in the upper part of the hold 4, and the hold 4 is divided into an upper hold 4A and a lower hold 4B by the hold curtain 3. ing.

A bow side upper ventilation device 7A is provided on the bow side of the hatch coaming 2, and a bow side lower ventilation port 6A is provided on the bow side of the lower hold 4B with the hold curtain 3 in between. Bow side upper ventilation port 7A and bow side lower ventilation port 6
A is connected to the bow side duct 5A having a bow side mobile ventilator 8A.

The stern side of the hatch coaming 2 is also provided with a stern side upper ventilation port 7B like the bow side, and the stern side lower ventilation port 6B is provided on the stern side of the lower hold 4B with the hold curtain 3 in between. The stern side upper ventilation port 7B and the stern side lower ventilation port 6B are connected by a stern side duct 5B having a stern side mobile ventilator 8B.

In the embodiment described above, when both the bow side mobile ventilation fan 8A and the stern side mobile ventilation fan 8B are operated, the air in the lower hold 4B becomes an air flow and passes through the stern side duct 5B to the upper hold. 4A from the stern side to the bow side, passes through the bow side duct 5A, and moves from the bow side to the stern side of the lower hold 4B.The airflow repeats the series of processes again and moves inside the upper hold 4A. Then, the dew adhering to the lower surface of the hatch cover 1 is blown off, and the dew adhering to the steel material of the cargo inside the lower hold 4B is removed.

Effects of the invention According to the invention, ventilation holes are provided in the hatch coamings on the bow and stern sides to allow ventilation to the lower surface of the hatch cover, so dew on the lower surface of the hatch cover where dew tends to adhere can be blown off and completely eliminated. The inside of the hold is completely partitioned into an upper and lower part by a hold curtain, and ventilation is circulated between the upper and lower parts of the hold, so ventilation is carried out efficiently and the steel materials in the lower part of the hold are also protected. Proper ventilation is achieved, which improves dew condensation prevention and maintains the quality of steel materials.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment according to the present invention. 1... Hatch cover, 2... Hatch combing, 3... Kurai curtain, 4... Hold, 4A...
Upper hold, 4B...Lower hold, 5A...Forward side duct, 5B...Stern side duct, 6A...Fore side lower ventilation port, 6B...Stern side lower ventilation port, 7A...
Bow side upper ventilation port, 7B... Stern side upper ventilation port,
8A... Mobile ventilator on the bow side, 8B... Mobile ventilator on the stern side.

Claims (1)

[Scope of utility model registration request] In a steel material carrier that has a hold curtain that horizontally partitions the hold, on the one hand, a ventilation hole is provided in the hatch coaming on the bow side above the hold curtain provided in the upper part of the hold, and the curtain is sandwiched to provide ventilation to the bow side of the lower part of the hold. A duct with a mobile ventilator connects the upper and lower ventilation ports on the bow side, and on the other hand, a ventilation port is provided in the hatch coaming on the stern side above the curtain, and the duct is connected to the stern in the lower part of the hold by sandwiching the curtain. With ventilation holes on the side,
The upper and lower ventilation ports on the stern side are connected by a duct having a mobile ventilation fan, and the upper and lower parts of the hold partitioned by the curtain are connected by the ducts on the bow and stern sides, respectively, so that ventilation can be circulated. A ventilation device for preventing dew condensation on a steel material carrier, characterized by: