Vacuum bag for assisting in mounting glass wool

Abstract

Two or three adjacent edges of a rectangular bag-shaped main body are fixed sealing edges, the other one or two edges of the rectangular bag-shaped main body are movable openings, when a glass wool part is arranged along the long edge direction of the vacuum bag, the vacuum bag is a sealing edge formed by pressing two adjacent edges, and the other two adjacent edges are movable openings. The movable opening is provided with an L-shaped sealing strip; when the glass wool part is arranged along the short edge direction of the vacuum bag, the vacuum bag is provided with a single long-edge movable opening, the other three edges are pressed sealing edges, and the long-edge movable opening is provided with a linear sealing strip. A sealing zipper on the sealing strip is matched with a pull rope, the length of the pull rope is not smaller than 1 / 2 of the perimeter of the bag-shaped main body, one or more glass wool parts are arranged in the rectangular bag-shaped main body, a suction port is formed in the surface of the bag-shaped main body, and the suction port is connected with a turbine pump through a telescopic pipe for vacuumizing. The vacuum bag is used for containing glass wool, and glass wool parts can be assisted to be rapidly installed in the expansion joint and installed in place at a time.

Description

Technical Field

[0001] The invention belongs to the field of the construction and design of marine LNG storage tanks, and particularly relates to a vacuum bag for assisting in installing glass wool. Background Art

[0002] In the MARK type thin-film containment system, the insulation layer is composed of prefabricated insulation boards bonded to the inner bottom of the ship by resin ropes. The insulation boards are divided into a main insulation layer and a secondary insulation layer. A 30-mm expansion joint is left between adjacent secondary insulation layers. The glass wool component is used to fill the expansion joint between the secondary insulation layers, which not only ensures the integrity of the insulation layer but also plays a role in heat insulation.

[0003] The glass wool component is made of glass wool with a bulk density of 22 kg / m³ - 40 kg / m³ and has kraft paper pasted on the outside. It has a certain elasticity, and its compression performance varies according to the density of the glass wool. The conventional shape is a flat cuboid. For the MARKⅢ FLEX type cargo containment system, the thickness of the secondary insulation layer is 300 mm. The common specifications of the glass wool component are a thickness of 35 mm, a height of 295 mm, and a length of 990 mm. For a 175,000-cubic-meter LNG carrier, the installation quantity of glass wool components with a length of about 1 m is more than 40,000 pieces. Currently, the traditional installation of glass wool components uses a clamping plate tooling with a handle at one end. The clamping plate tooling is made of materials such as wood or metal. During operation, the glass wool is placed between a pair of clamping plates. It is necessary to forcefully clamp the tooling while inserting the glass wool component and the tooling together into the expansion joint. After installation, the clamping plate tooling is withdrawn. However, the clamping plate tooling matching the length of the glass wool component is large in volume, and it is laborious and inconvenient for a single person to operate. It is not easy to uniformly clamp the whole glass wool component in the thickness direction, and the displacement of the glass wool component is likely to occur when the tooling is withdrawn, so the installation accuracy cannot be guaranteed at one time during installation. At the same time, due to the large installation quantity of glass wool components, the installation method using the clamping plate tooling will waste a large amount of manpower and working hours, prolong the construction period, and increase the construction cost. Summary of the Invention

[0004] In order to solve the above problems, the invention provides a vacuum bag for assisting in installing glass wool, aiming to achieve the rapid installation of glass wool components and the purpose of facilitating extrusion installation. The technical solution adopted is as follows:

[0005] A vacuum bag for assisting in installing glass wool has a rectangular bag-shaped main body. Two or three adjacent sides of the bag-shaped main body are fixed sealing edges, and the remaining one or two sides are movable openings. When the glass wool component is inserted along the long side direction of the vacuum bag, the vacuum bag has two adjacent sides as the pressed sealing edges, and the other two adjacent sides are movable openings. The movable openings are provided with L-shaped sealing strips. When the glass wool component is inserted along the short side direction of the vacuum bag, the vacuum bag has a single long side as the movable opening, and the other three sides are the pressed sealing edges. The long side movable opening is provided with a straight-shaped sealing strip. The sealing zipper on the sealing strip is matched with a pull rope, and the length of the pull rope is not less than half of the perimeter of the bag-shaped main body. One or more glass wool components are installed in the rectangular bag-shaped main body. The surface of the bag-shaped main body is provided with suction ports, and the suction ports are connected to a turbo pump through telescopic pipes for vacuum pumping.

[0006] For the above-mentioned vacuum bag for assisting in installing glass wool, further, the bag-shaped main body is made of high-thickness PE or PA material.

[0007] For the above-mentioned vacuum bag for assisting in installing glass wool, further, the number of glass wool components installed in the bag-shaped main body does not exceed 3 pieces.

[0008] For the above-mentioned vacuum bag for assisting in installing glass wool, further, the thickness of the compressed vacuum cotton is 10 - 20 mm.

[0009] For the above-mentioned vacuum bag for assisting in installing glass wool, further, the vacuum bag with the compressed glass wool component is placed between two adjacent secondary insulation layers.

[0010] Using the vacuum bag of the present invention to hold glass wool can assist in quickly installing the glass wool component into the expansion joint in one go. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the vacuum bag structure;

[0012] Figure 2 、 3 、4 are schematic diagrams of the vacuum bag in use;

[0013] Figure 5 is Figure 3 an enlarged schematic diagram;

[0014] Among them, 2 - secondary insulation layer, 4 - glass wool component, 5 - pull rope, 25 - sealing strip, 26 - sealing edge, 27 - vacuum bag, 29 - sealing zipper, 31 - expansion joint, 32 - positioning tooling. Detailed Embodiments

[0015] The present invention will be further described in conjunction with the drawings.

[0016] As Figure 1As shown in the figure, a vacuum bag for assisting in installing glass wool has a rectangular bag-shaped main body made of high-thickness PE. Two adjacent sides of the bag-shaped main body are fixed sealing edges, and the remaining two sides form an L-shaped movable opening. A sealing strip is provided at the movable opening, and a sealing zipper on the sealing strip is matched with a pull rope. The length of the pull rope is not less than 1 / 2 of the perimeter of the bag-shaped main body. A glass wool component is installed in the rectangular bag-shaped main body. A suction port is configured on the surface of the bag-shaped main body, and the suction port can be connected to a turbo pump through a telescopic pipe to evacuate the air. The thickness of the vacuum cotton after evacuation and compression is 10 - 20 mm.

[0017] Move the encapsulated vacuum bag 27 above the expansion joint 31 between two adjacent insulating layers. First, lay the pull rope 5 along the direction of the expansion joint 31 at the bottom of the expansion joint, as Figure 2 shown, entering from the M end of the insulating board and exiting from the N end. Subsequently, insert the vacuum bag 27 into the expansion joint 31, as Figure 3 shown. Taking the vacuum bag 27 with an L-shaped sealing strip 25 as an example, at the M end of the insulating board, first open the sealing zipper 29 on the vacuum bag 27 to the inflection point, see Figure 5 the enlarged view of the M end of the insulating board. Subsequently, pull the pull rope 5 and continue to pull the sealing zipper 29 until it is fully opened. After the sealing zipper 29 of the vacuum bag 27 is fully opened, insert a positioning tooling 32 into the vacuum bag. The positioning tooling is a long strip-shaped board with a handle, and the width is greater than the width of the expansion joint. Use this tooling to press the glass wool component 4, and at the same time Figure 5 pull the vacuum bag 27 in the direction of the arrow shown, so that the glass wool component 4 will not be displaced from the expansion joint 31 due to the pulling of the vacuum bag 27. As Figure 4 shown, the vacuum bag 27 is completely removed from the working station.

Claims

1. A vacuum bag for assisting in installing glass wool, characterized in that, There is a rectangular bag-shaped main body. Two or three adjacent sides of the bag-shaped main body are fixed sealing edges, and the remaining one or two sides are movable openings. When the glass wool component is loaded along the long side direction of the vacuum bag, the vacuum bag has two adjacent sides as the pressed sealing edges, and the other two adjacent sides are movable openings. The movable openings are provided with L-shaped sealing strips; when the glass wool component is loaded along the short side direction of the vacuum bag, the vacuum bag has a single long side as a movable opening, and the other three sides are pressed sealing edges. The long side movable opening is provided with a linear sealing strip. The sealing zipper on the sealing strip is matched with a pull rope, and the length of the pull rope is not less than 1 / 2 of the perimeter of the bag-shaped main body. One or more glass wool components are installed in the rectangular bag-shaped main body. Suction ports are arranged on the surface of the bag-shaped main body. The suction ports are connected to a turbo pump through telescopic pipes to conduct vacuum pumping.

2. The vacuum bag for assisting in installing glass wool according to claim 1, wherein, The bag-shaped main body is made of high-thickness PE or PA material.

3. The vacuum bag for assisting in installing glass wool according to claim 1, characterized in that, The number of glass wool components installed in the bag-shaped main body does not exceed 3 pieces.

4. A vacuum bag for assisting in installing glass wool according to claim 1, characterized in that, The thickness of the compressed vacuum cotton is 10 - 20 mm.

5. A vacuum bag for assisting in installing glass wool according to claim 1, characterized in that, The vacuum bag with the compressed glass wool component is placed between two adjacent secondary insulation layers.

Images