Harmful gas recovery treatment device for fuel cabin

Abstract

The utility model discloses a fuel cabin harmful gas recovery processing device which comprises a machine box, the machine box is connected with a discharge port of a fuel cabin through a connecting pipe, the interior of the machine box is divided into a gas-liquid separation chamber and a filtering chamber, the gas-liquid separation chamber is located at the front end of the filtering chamber, and a filtering module is arranged in the filtering chamber. Gas with pressure in the fuel cabin enters the case through the connecting pipe, sequentially passes through the gas-liquid separation chamber and the filtering chamber, and is discharged from a gas outlet in the rear end of the filtering chamber; a plurality of partition plates are installed in the gas-liquid separation chamber and divide the interior of the gas-liquid separation chamber into gas channels, and a plurality of baffle plates are arranged on the inner walls of the gas channels in a staggered mode. According to the device, gas mixed with liquid fuel is guided into the case by utilizing positive pressure in the fuel cabin for gas-liquid separation and adsorption filtration, so that the problems that harmful gas is directly discharged into air to pollute the environment, and time is wasted due to the fact that an operator stops working when the gas is discharged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of harmful gas recovery and treatment during the post-processing process of an underwater vehicle after navigation, and in particular to a harmful gas recovery and treatment device for a fuel tank. Background Art

[0002] During operation, underwater vehicles must inject large amounts of compressed gas into their fuel tanks to increase pressure. After the operation is complete, a large amount of mixed gas containing toxic fuel accumulates in the tanks. Currently, this is primarily done using a simple cross-shaped tool. However, since these tools lack exhaust gas recovery capabilities, they can only release the harmful fuel-mixed gas directly into the air, resulting in the following problems and drawbacks:

[0003] 1. Toxic and harmful gases permeate the working environment, which not only pollutes the environment but also harms the health of product preparation personnel.

[0004] 2. It takes a while to release the gas in the fuel tank. In order to prevent the operators from being harmed by toxic and harmful gases, the operators are required to stop working and leave the workplace during the release. They can only continue working after the gas release is completed, which results in a waste of time. Utility Model Content

[0005] In response to the above problems, the utility model provides a fuel tank harmful gas recovery and treatment device, which uses the positive pressure in the fuel tank to introduce the gas mixed with liquid fuel into the chassis for gas-liquid separation and adsorption filtration, thereby solving the problems of harmful gases directly leaking into the air to pollute the environment and the time wasted when workers stop working when releasing gas.

[0006] Specifically, the utility model provides a fuel tank harmful gas recovery and treatment device, comprising: a chassis; the chassis is connected to the discharge port of the fuel tank via a connecting pipe, the chassis is divided into a gas-liquid separation chamber and a filter chamber, the gas-liquid separation chamber is located at the front end of the filter chamber, and a filter module is provided in the filter chamber. After the pressurized gas in the fuel tank enters the chassis through the connecting pipe, it passes through the gas-liquid separation chamber and the filter chamber in sequence and is discharged from the gas outlet at the rear end of the filter chamber;

[0007] The gas-liquid separation chamber is equipped with a plurality of partitions, which divide the gas-liquid separation chamber into an airway. The inner wall of the airway is staggered with a plurality of baffles.

[0008] Furthermore, the air channel includes: a descending channel, an ascending channel and a reflux channel arranged in sequence along the horizontal direction, and a plurality of baffles are arranged in the ascending channel. The gas enters the filter chamber after passing through the ascending channel.

[0009] Furthermore, a drain outlet is provided at the bottom of the gas-liquid separation chamber, and the drain outlet is used to discharge the separated liquid.

[0010] Furthermore, the connecting pipe is a bleed hose, an air intake regulating valve is provided on the bleed hose, and a bleed connector is provided at the front end for connecting to the discharge port of the fuel tank.

[0011] Furthermore, the filter module includes: a primary filter, a medium filter and a high efficiency filter arranged in sequence along the air flow direction.

[0012] Furthermore, the primary filter is a nylon mesh filter module, and the medium efficiency filter and the high efficiency filter are activated carbon filter modules.

[0013] Furthermore, a slot is provided on the top of the chassis, and a slide is installed inside the slot for installing the filter module.

[0014] Furthermore, the chassis is a closed structure, and a safety valve is provided on the top of the gas-liquid separation chamber.

[0015] Furthermore, universal wheels are provided at the bottom of the chassis.

[0016] Furthermore, a waste liquid discharge valve is installed on the sewage outlet.

[0017] Working principle:

[0018] Install the primary filter, medium efficiency filter and high efficiency filter into the chassis one by one, connect the vent joint to the discharge port of the fuel tank, and after opening the air inlet regulating valve, due to the positive pressure in the fuel tank, the gas mixed with fuel in it enters the gas-liquid separation chamber, first moves downward along the downward channel, and then part of it enters the ascending channel, collides with the baffle and forms a baffle, while the other part enters the reflux channel and rotates backflow, which reduces the flow rate of the internal gas, so that the liquid toxic fuel with a larger specific gravity in the gas-liquid separation chamber flows into the bottom of the separation chamber under the action of gravity, and the gas goes up into the primary filter for preliminary adsorption filtration, and then enters the medium efficiency filter and high efficiency filter for filtration, and finally eliminates the harmless gas.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The fuel tank harmful gas recovery and treatment device provided by the utility model can realize the treatment of positive pressure harmful gas in the fuel tank, and can effectively reduce the harm of harmful gas discharged during the fuel tank decompression to personnel and the environment. Moreover, since no electrical equipment is used, other work can be carried out while decompression is being carried out, and there is no need to stop work and wait, which can improve work efficiency.

[0021] (2) The gas-liquid separation chamber adopts the baffled gas-liquid separation principle, which can separate and recover the liquid toxic fuel mixed with the harmful gas.

[0022] (3) The filters are installed through slides, and the filters can be separated during installation, which enables quick installation and replacement of filters. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram showing the usage status of the fuel tank harmful gas recovery and treatment device in Example 1;

[0024] Figure 2 This is a schematic structural diagram of the fuel tank harmful gas recovery and treatment device in Example 1;

[0025] Figure 3 This is a schematic diagram of the principle of the fuel tank harmful gas recovery and treatment device in Example 1.

[0026] Reference numerals:

[0027] 1- Chassis; 11- Air inlet; 12- Air outlet; 13- Safety valve; 14- Drain outlet; 15- Waste liquid discharge valve; 16- Universal wheel; 17- Notch; 18- Sealing ring; 2- Partition; 21- Downward channel; 22- Ascending channel; 23- Return channel; 24- Baffle; 31- Primary filter; 32- Medium efficiency filter; 33- High efficiency filter; 4- Vent hose; 41- Vent connector; 42- Inlet regulating valve; 5- Fuel tank. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below through specific implementations in conjunction with the accompanying drawings.

[0029] Example 1

[0030] like Figure 1-3 As shown, this embodiment provides a fuel tank hazardous gas recovery and treatment device, comprising: a relatively sealed chassis 1 and a bleed hose 4. The chassis 1 is entirely constructed of welded stainless steel plates and has universal wheels 16 on its bottom for easy mobility. An air inlet 11 is located on one upper portion of the chassis 1, and an air outlet 12 is located on the other side. The bleed hose 4 is connected to the air inlet 11 at one end and to a bleed connector 41 at the other end for connection to the bleed port of the fuel tank 5. The bleed hose 4 is equipped with an air inlet regulating valve 42 for controlling the amount of air entering. When the bleed port of the fuel tank 5 is opened, due to the positive pressure inside, the harmful gases within the fuel tank 5 flow through the bleed hose 4 into the chassis 1 for treatment, and are then discharged as harmless gases. This solves the problem of toxic and harmful gases permeating the operating environment when the fuel tank 5 is depressurized during underwater vehicle decomposition and processing, causing environmental damage and endangering personnel.

[0031] Specifically, if Figure 2As shown, the chassis is divided into a gas-liquid separation chamber and a filtration chamber. The gas-liquid separation chamber is located at the front of the filtration chamber and is used to separate liquid fuel from the gas to be processed. Three baffles 2 are installed in the gas-liquid separation chamber. These three baffles 2 are spaced apart horizontally to form a downward channel 21, an upward channel 22, and a return channel 23. The downward channel 21 extends from the air inlet 11 to the bottom of the gas-liquid separation chamber, and the gas to be processed flows from top to bottom along the downward channel 21. The reflux channel 23 is in the shape of a "ㄇ", with a notch at the lower part of the side near the ascending channel 22. A portion of the gas in the descending channel 21 enters the reflux channel 23 through the notch, flows back and slows down in the reflux channel 23, and then enters the ascending channel 22 along with part of the gas from the descending channel 21. A number of baffles 24 are staggered in the ascending channel 22, and the baffles 24 are arranged tilted downward. When the gas enters the ascending channel 22, it is affected by the baffles 24, further reducing the gas speed. The heavier liquid fuel mixed in the gas will remain on the baffles 24, and finally flow down along the baffles 24 to the bottom of the gas-liquid separation chamber. A sewage outlet 14 is provided at the bottom of the gas-liquid separation chamber, and a waste liquid discharge valve 15 is installed on the sewage outlet 14. The separated liquid fuel can be discharged from the sewage outlet 14. A safety valve 13 is provided above the gas-liquid separation chamber to serve as a safety insurance to prevent the pressure in the chassis 1 from being too high and causing blockage, thereby serving as a pressure relief.

[0032] The filter chamber houses a filtration module consisting of a primary filter 31, a medium filter 32, and a high-efficiency filter 33. The primary filter is a nylon mesh filter module, though non-woven fabric, sponge, or other filter modules can also be used. The medium and high-efficiency filters are activated carbon filters. After gas-liquid separation, the gas enters the primary filter 31 for initial adsorption filtration, then sequentially enters the medium filter 32 and high-efficiency filter 33 for filtration. Finally, the harmless gas is discharged through the outlet 12.

[0033] There are three slots 17 above the filter chamber, with slideways installed inside the slots 17 for installing the filter module. A sealing ring 18 is provided at the slots 17. The filter is inserted from top to bottom and then fixed, which can effectively improve the efficiency of filter replacement.

[0034] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A fuel tank harmful gas recovery and treatment device, comprising: The chassis (1) is characterized in that the chassis (1) is connected to the discharge port of the fuel tank (5) through a connecting pipe, and the chassis (1) is divided into a gas-liquid separation chamber and a filter chamber. The gas-liquid separation chamber is located at the front end of the filter chamber, and a filter module is provided in the filter chamber. The pressurized gas in the fuel tank (5) enters the chassis (1) through the connecting pipe, passes through the gas-liquid separation chamber and the filter chamber in sequence, and is discharged from the gas outlet (12) at the rear end of the filter chamber. The gas-liquid separation chamber is equipped with a plurality of partitions (2), which divide the gas-liquid separation chamber into an airway. The inner wall of the airway is staggered with a plurality of baffles (24).

2. The fuel tank harmful gas recovery and treatment device according to claim 1, characterized in that: The air channel comprises: a descending channel (21), an ascending channel (22) and a return channel (23) arranged in sequence along the horizontal direction; a plurality of baffles (24) are arranged in the ascending channel (22); and the gas enters the filter chamber after passing through the ascending channel (22).

3. The fuel tank harmful gas recovery and treatment device according to claim 1, characterized in that: A sewage outlet (14) is provided at the bottom of the gas-liquid separation chamber, and the sewage outlet (14) is used to discharge the separated liquid.

4. The fuel tank harmful gas recovery and treatment device according to claim 1, characterized in that: The connecting pipe is a deflation hose (4), an air intake regulating valve (42) is provided on the deflation hose (4), and a deflation connector (41) is provided at the front end for connecting to the discharge port of the fuel tank (5).

5. The fuel tank harmful gas recovery and treatment device according to claim 1, characterized in that: The filter module comprises: a primary filter (31), a medium filter (32) and a high efficiency filter (33) arranged in sequence along the airflow direction.

6. The fuel tank harmful gas recovery and treatment device according to claim 5, characterized in that: The primary filter (31) is a nylon mesh filter module, and the medium-efficiency filter (32) and the high-efficiency filter (33) are activated carbon filter modules.

7. The fuel tank harmful gas recovery and treatment device according to claim 5 or 6, characterized in that: A notch (17) is provided on the upper side of the chassis (1), and a slideway is installed inside the notch (17) for installing a filter module.

8. The fuel tank harmful gas recovery and treatment device according to claim 1, characterized in that: The chassis (1) is a sealed structure, and a safety valve (13) is provided on the top of the gas-liquid separation chamber.

9. The fuel tank harmful gas recovery and treatment device according to claim 1, characterized in that: Universal wheels (16) are provided at the bottom of the chassis (1).

10. The fuel tank harmful gas recovery and treatment device according to claim 3, characterized in that: A waste liquid discharge valve (15) is installed on the sewage outlet (14).

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