CN218368173U - Liquid tank structure capable of effectively reducing strength requirement of liquid tank - Google Patents

Abstract

The utility model discloses a liquid tank structure capable of effectively reducing the strength requirement of a liquid tank, which comprises a special liquid tank, wherein the special liquid tank is provided with a filling port and a vent pipe, and the special liquid tank is also provided with a liquid level remote sensor; and the liquid level remote sensor is connected with an audible and visual alarm which is positioned on a filling station of the special liquid tank. The utility model discloses need not additional strengthening intensity and just can reach the purpose that effectively reduces special type liquid tank strength requirement.

Description

Liquid tank structure capable of effectively reducing strength requirement of liquid tank

Technical Field

The utility model relates to a boats and ships with special tank, more specifically say, relate to an effectively reduce tank structure that tank intensity required.

Background

Special tanks for carrying corrosive, irritant, flammable and explosive or toxic gases on ships require that the gas permeable pipes of the tanks extend to open areas at high positions on the ship, typically the top of a chimney or the topmost part of an superstructure, to avoid affecting personnel and equipment on the ship. However, according to the SOLAS convention chapter II-1, article 11, "tanks for loading liquids and forming part of the ship's cabins, should be tested for their tightness and structural strength with a head of water corresponding to their design pressure. The water head is no matter how much lower than the top of the gas-permeable pipe or 2.4m above the top of the cabin, and the water head is taken out. When the installation position of the liquid tank vent pipe is raised, the pressure of the tightness test of the liquid tank is correspondingly increased according to the convention requirement, and the structural strength of the liquid tank is required to be enhanced.

The conventional solution to this problem is now as follows:

1) The mounting height of the vent pipe is reduced to the greatest extent, and the mounting height of the vent pipe is reduced to a range which does not exceed the maximum structural strength of the special liquid tank. The method has great limitation, and is only applicable to corrosive, irritant, inflammable and explosive or toxic gas loaded with special liquid and has little or slight influence on personnel and equipment;

2) The method needs to increase the thickness of the bulkhead plate and strengthen the bulkhead, and needs to increase the plate thickness according to the installation height of the vent pipe. The design pressure of the conventional liquid tank is about 1-2 atmospheric pressures, the wall thickness in the tank is about 12mm, and when the height of the vent pipe is increased to 10m, namely 1 atmospheric pressure, the wall thickness of the liquid tank is probably doubled and the structure is reinforced. Therefore, the method for increasing the structural strength of the liquid tank greatly increases the thickness of the bulkhead plate of the liquid tank, correspondingly increases the weight and the construction cost of the ship and has low economy;

3) A safety valve overflow pipeline 1 is added, a safety valve overflow pipeline 1 is added in the area close to the top of the special liquid tank, and an overflow pipe is connected to a special overflow tank 2 (or another same special liquid tank). The set pressure of the safety valve does not exceed the design pressure of the cabin, when the pressure of the special liquid cabin reaches the set pressure of the safety valve, the safety valve is opened, the pressure is released to the special overflow cabin 2 through the overflow pipe, and therefore the purpose of protecting the special liquid cabin can be achieved, and the tightness test water head of the special liquid cabin can be selected according to 2.4m above the cabin top instead of the height of the top of the vent pipe. The method is a design method for reducing the strength requirement of a liquid tank compared with a common special liquid tank at present, but the method requires that at least two liquid tanks for loading the special medium are arranged on a ship or a special overflow tank is arranged for storing the special medium for overpressure overflow, a set of special overpressure overflow pipeline is required to be arranged, the limitation is large, and the economy is poor, as shown in figure 1.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect that exists among the prior art, the utility model aims at providing an effectively reduce tank structure that tank intensity required, need not additional strengthening intensity and just can reach the purpose that effectively reduces special type tank intensity required.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a liquid tank structure capable of effectively reducing the strength requirement of a liquid tank comprises a special liquid tank, wherein a filling port and a vent pipe are arranged on the special liquid tank;

a liquid level remote sensor is also arranged on the special liquid tank;

and the liquid level remote sensor is connected with an audible and visual alarm which is positioned on a filling station of the special liquid tank.

Preferably, the liquid level telemetering sensor is connected with the audible and visual alarm through a signal cable.

The utility model provides an effectively reduce tank structure that tank intensity required has following several beneficial effect:

1) The audible and visual alarm is only arranged at the filling station, so that the cost is low and the occupied space is small;

2) The signal of the audible and visual alarm comes from the liquid level remote measuring sensor, and only a signal cable is needed to be added without additionally adding a sensor, so that the cost is low;

3) The special liquid tank tightness test water head is only required to be 2.4m above the tank top of the tank, the thickness of a plate material of the liquid tank wall is not required to be increased to increase the structural strength of the liquid tank, and the applicability is wide;

4) The ship refitted and added with the special liquid tank in the later period has strong applicability and low cost. Only need set up audible-visual annunciator at the filling station, then with the liquid level telemetering sensor connection of signal cable and tank.

Drawings

FIG. 1 is a schematic view of a prior art tank configuration with the addition of a relief valve overflow line;

fig. 2 is a schematic structural view of the liquid tank structure of the present invention.

Detailed Description

In order to better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.

Combine fig. 2 to show, the utility model provides an effectively reduce tank structure of tank intensity requirement, including special type tank 3, be equipped with filler 4 and permeability cell 5 on special type tank 3's the top, the aforesaid is prior art part, just no longer gives unnecessary details here. Different from the prior art:

the special liquid tank 3 is also provided with a liquid level telemetering sensor 6, and the conventional special liquid tank is provided with the liquid level telemetering sensor in a liquid level telemetering system, so that the liquid level telemetering sensor of the special liquid tank in the liquid level telemetering system can be directly utilized without additional arrangement.

The liquid level remote sensor 6 is connected with an audible and visual alarm 7, and the audible and visual alarm 7 is positioned on a filling station of the special liquid tank.

The liquid level telemetering sensor 6 is connected with an audible and visual alarm 7 through a signal cable 8.

When the special liquid tank 3 is in filling operation and the liquid level reaches the high liquid level set by the liquid level telemetering sensor 6, the liquid level telemetering sensor 6 sends out a high liquid level alarm signal. And the audible and visual alarm 7 positioned at the filling station immediately gives out sound and optical signal alarms after receiving the signals to remind filling personnel to pay attention, and the filling personnel stops the pump and stops filling operation after receiving the alarm. In the filling operation of the liquid tank, a person is watched in a filling station in the whole process, whether the special liquid tank 3 is filled in place can be visually known through the audible and visual alarm 7, and the filling can be stopped in time, so that the special liquid tank 3 is prevented from overpressure. Therefore, the tightness test water head of the special liquid tank 3 provided with the sound and light alarm device 7 can be executed according to the distance of 2.4m above the tank top without hitting the top of the vent pipe 5. Therefore, the structural strength of the special liquid tank 3 does not need to be additionally enhanced, and the purpose of effectively reducing the strength requirement of the special liquid tank is achieved.

The utility model discloses the liquid tank structure is compared the conventional relief valve overflow pipeline design that increases, the utility model discloses more simple and convenient, the cost is lower, application scope is wider.

It should be understood by those skilled in the art that the above embodiments are only used for illustrating the present invention, and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are all within the scope of the claims of the present invention as long as they are within the spirit of the present invention.

Claims (2)

1. The utility model provides an effectively reduce liquid tank structure that liquid tank intensity required, includes special type liquid tank, be equipped with filler and permeability cell on the special type liquid tank, its characterized in that:

a liquid level remote sensor is also arranged on the special liquid tank;

and the liquid level remote sensor is connected with an audible and visual alarm which is positioned on a filling station of the special liquid tank.

2. The tank structure effective in reducing tank strength requirements of claim 1, wherein: the liquid level telemetering sensor is connected with the audible and visual alarm through a signal cable.

Images