Gas filter

Abstract

The utility model provides a fuel gas filter which comprises a box body, a drying chamber is arranged in the box body, an air inlet hole is connected to one end of the lower part of the drying chamber, the other end of the drying chamber is connected to a filtering chamber through a transition hole, and a drain hole is connected to the lower side surface of the connecting position of the drying chamber and the air inlet hole; a drying cavity is formed in the box body, a heating pipe is installed in the drying cavity, a protective cover is arranged on the outer side of the heating pipe, a control cavity is formed in the box body and located above the drying cavity, a controller is installed in the control cavity, and a sensor is arranged on one side of the controller. And a filter screen with a cylindrical structure is placed in the filter chamber. The drying chamber is arranged in the box body, when the sensor detects that the temperature in the drying chamber is low or the humidity in the drying chamber is high, the controller can control the heating pipe located in the protective cover to be opened, the moisture content in fuel gas can be reduced before the fuel gas flows through the filter screen, and the situation that the filter screen is blocked can be relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel gas filtering, and in particular relates to a fuel gas filter. Background Art

[0002] As an indispensable device on the transmission pipeline, the gas filter is currently widely used in the laid gas pipeline. Since natural gas inevitably contains some impurities such as grease and water droplets, some particulate impurities will be generated in the gas pipeline after a long time. These impurities will easily cause the gas pressure reducing valve and the gas injection rail to be blocked after entering the gas pressure reducing valve and the gas injection rail, which will reduce the efficiency of the entire combustion system.

[0003] The gas filter can filter out most of the impurities in the gas and ensure the normal circulation of the gas. However, the existing gas filters still have the following shortcomings: 1. They cannot block the water in the filtered gas. In winter, the water will precipitate and freeze inside the gas filter, causing ice blockage and affecting the circulation of the gas; 2. The water in the gas will adhere to the filter surface of the filter together with the impurities. When the water content in the gas is too high, the probability of filter blockage will increase, thereby reducing the service life of the filter. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a gas filter, and the technical solution adopted is as follows:

[0005] A gas filter comprises a box body, a drying chamber is arranged inside the box body, an air inlet hole is connected to one end of the drying chamber at a lower position, the other end of the drying chamber is connected to the filter chamber through a transition hole, and a drainage hole is connected to the lower side surface of the connection position between the drying chamber and the air inlet hole; a heating pipe is installed in the drying chamber, a protective cover is arranged on the outer side of the heating pipe, a control chamber is opened in the box body and above the drying chamber, a controller is installed in the control chamber, and a sensor is arranged on one side of the controller;

[0006] A filter screen with a cylindrical structure is placed in the filter chamber, an air outlet is provided on one side of the filter chamber, and a pressure cover for pressing the filter screen and sealing the opening at the upper end of the filter chamber is installed above the box body.

[0007] Furthermore, the inner diameter of the filter chamber is larger than the aperture of the transition hole, and the outer diameter of the filter screen is smaller than the inner diameter of the filter chamber.

[0008] Furthermore, a plurality of partition plates are provided on the upper side of the drying chamber. The partition plates are arc-shaped structures for increasing the contact area with the fuel gas, thereby increasing the efficiency of adsorbing moisture in the fuel gas.

[0009] Furthermore, the lower end of the sensor is located in the drying chamber; and two sensors are used, namely a temperature sensor and a humidity sensor, and the sensors and the heating tube are electrically connected to the controller.

[0010] Furthermore, an air inlet pipe is installed on the outside of the box body and connected to the air inlet hole, a drain pipe is installed on the outside of the box body and connected to the drain hole, and an air outlet pipe is installed on the outside of the box body and connected to the air outlet hole. Switch valves are provided in the air inlet pipe, the drain pipe and the air outlet pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model provides a drying chamber in a box body. When the sensor measures that the temperature in the drying chamber is low or the humidity is high, the controller can control the opening of the heating tube in the protective cover, so as to reduce the moisture content in the gas before the gas flows through the filter, thereby slowing down the clogging of the filter. It can also prevent the moisture in the gas from freezing in the box body when the temperature is low in winter, thereby preventing ice blockage.

[0013] The drainage hole of the utility model is arranged on the lower side of the lowest position in the drying chamber. Water condensed in the drying chamber forms water droplets which flow into the drainage hole and are discharged through the drainage pipe. In winter, in combination with the heating pipe, the water vapor collected in the drying chamber can be discharged from the drainage pipe in a timely and stable manner, thereby ensuring the normal circulation of gas in the box.

[0014] The inner diameter of the filter chamber of the utility model is larger than the aperture of the transition hole, and the outer diameter of the filter screen is smaller than the inner diameter of the filter chamber. Therefore, there is a gap between the outer wall of the filter screen and the inner wall of the filter chamber, which can enable the gas to be filtered out from various parts of the filter screen, thereby improving the filtering efficiency of the gas and reducing the occurrence of the filter screen being completely blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the utility model filter screen removal state;

[0018] Figure 4 This is a schematic diagram of the installation structure of the partition plate of the utility model;

[0019] Figure 5 This utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 6This utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0021] In the figure:

[0022] 1-box, 11-air inlet, 12-drying chamber, 121-partition plate, 13-drainage hole, 14-transition hole, 15-filter chamber, 16-air outlet, 17-control chamber, 2-inlet pipe, 3-drainage pipe, 4-outlet pipe, 5-shield, 6-heating tube, 7-sensor, 8-controller, 9-filter screen, 10-pressure cover. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] As attached Figure 1-6 shown.

[0025] A gas filter comprises a casing 1, wherein a drying chamber 12 is arranged inside the casing 1, wherein the drying chamber 12 is in an inclined state inside the casing 1, wherein an air inlet 11 is connected to one end at the lowest point of the drying chamber 12, wherein the lower side surface at the highest position of the drying chamber 12 is connected to a filter chamber 15 through a transition hole 14, and wherein a drainage hole 13 is connected to the lower side surface at the lowest position of the drying chamber 12; a heating tube 6 is installed at one end at the highest point of the drying chamber 12, wherein a protective cover 5 is arranged on the outer side of the heating tube 6, and wherein a plurality of partition plates 121 are arranged on the upper side surface of the drying chamber 12 along the length direction of the drying chamber 12.

[0026] A control chamber 17 is provided in the housing 1 and above the drying chamber 12 . A controller 8 is installed in the control chamber 17 . A temperature sensor and a humidity sensor are provided on one side of the controller 8 . The two sensors and the heating tube 6 are electrically connected to the controller 8 .

[0027] In the working state, the device is installed in the gas pipeline according to the state of air intake through the air inlet pipe 2 and air outlet through the air outlet pipe 4; when the switch valve in the drain pipe 3 is closed and the switch valves in the air inlet pipe 2 and the air outlet pipe 4 are opened, the gas first passes through the drying chamber 12, and then enters the filter chamber 15 through the transition hole 14. After the impurities in the gas are filtered out by the filter net 9, it flows out from the position of the air outlet pipe 4.

[0028] When the filter screen 9 needs to be replaced, the switch valve in the air intake pipe 2 only needs to be closed, and then the pressure cover 10 is removed to replace the filter screen 9.

[0029] When the gas passes through the drying chamber 12, the moisture in the gas will be adsorbed on the inner wall of the drying chamber 12 and the outer wall of the shield 5. The partition plate 121 arranged in the drying chamber 12 is an arc-shaped structure, which can increase the contact area with the gas and adsorb the moisture in the gas to the greatest extent.

[0030] As attached Figure 2 As shown, the drying chamber 12 is inclined, the inner diameter of the air inlet 11 is smaller than the inner diameter of the drying chamber 12, and the air inlet 11 is arranged at the center position of the lower end of the drying chamber 12, and the drainage hole 13 is arranged on the lower side of the lowest position in the drying chamber 12, so that the water droplets condensed by the moisture in the drying chamber 12 will flow into the drainage hole 13, and the accumulated water flow can be discharged by opening the switch valve in the drainage pipe 3; when opening the drainage pipe 3 to clear the accumulated water, it is necessary to close the switch valve in the air inlet pipe 2 to prevent the gas from overflowing from the drainage pipe 3.

[0031] In winter, the moisture absorbed in the drying chamber 12 will condense and freeze. To prevent ice blockage, when the sensor 7 measures that the temperature in the drying chamber 12 is low or the humidity is high, the controller 8 can control the opening of the heating tube 6 located in the protective cover 5 to prevent the water vapor in the drying chamber 12 from freezing. The water vapor collected in the drying chamber 12 can be discharged from the drain pipe 3 in a timely and stable manner to ensure the normal use of the gas filter. At the same time, the humidity of the gas flowing out of the drying chamber 12 is reduced, which can slow down the blockage of the filter 9.

[0032] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A gas filter, comprising a housing (1), characterized in that: A drying chamber (12) is arranged inside the housing (1), an air inlet (11) is connected to one end of the drying chamber (12) at a lower position, the other end of the drying chamber (12) is connected to the filter chamber (15) via a transition hole (14), and a drainage hole (13) is connected to the lower side surface of the connection position between the drying chamber (12) and the air inlet (11); a heating pipe (6) is installed in the drying chamber (12), a protective cover (5) is provided on the outer side of the heating pipe (6), a control chamber (17) is opened in the housing (1) and located above the drying chamber (12), a controller (8) is installed in the control chamber (17), and a sensor (7) is provided on one side of the controller (8); A filter screen (9) is placed in the filter chamber (15), an air outlet hole (16) is provided on one side of the filter chamber (15), and a pressure cover (10) is installed above the box body (1) for pressing the filter screen (9) and sealing the upper opening of the filter chamber (15).

2. A gas filter as claimed in claim 1, characterized in that: The inner diameter of the filter chamber (15) is greater than the aperture of the transition hole (14), and the inner diameter of the filter chamber (15) is greater than the outer diameter of the filter screen (9).

3. A gas filter as claimed in claim 1, characterized in that: The upper side of the drying chamber (12) is provided with a plurality of partition plates (121).

4. A gas filter as claimed in claim 1, characterized in that: The lower end of the sensor (7) is located in the drying chamber (12), and there are two sensors (7), which are a temperature sensor and a humidity sensor.

5. A gas filter as claimed in claim 4, characterized in that: The sensor (7) and the heating tube (6) are both electrically connected to the controller (8).

6. A gas filter as claimed in claim 1, characterized in that: An air inlet pipe (2) is installed on the outside of the box body (1) and at a position connected to the air inlet hole (11), a drain pipe (3) is installed on the outside of the box body (1) and at a position connected to the drain hole (13), and an air outlet pipe (4) is installed on the outside of the box body (1) and at a position connected to the air outlet hole (16).

7. A fuel gas filter as claimed in claim 6, characterized in that: The air inlet pipe (2), the drainage pipe (3) and the air outlet pipe (4) are all provided with switch valves.

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