Fuel gas odorizing device

Abstract

The utility model discloses a fuel gas odorization device which comprises a box body, a gas inlet pipeline, a gas conveying pipeline, a first pressure regulator and an odorous liquid storage tank, the gas inlet pipeline, the gas conveying pipeline, the first pressure regulator and the odorous liquid storage tank are arranged in the box body, and the gas inlet pipeline is connected with the first pressure regulator; according to the device, firstly, a smelly liquid storage tank is arranged, a first switch valve is opened to convey smelly liquid in the smelly liquid storage tank into a buffer pipe for filling, then a gas inlet pipeline, a gas conveying pipeline and a first pressure regulator are arranged, the gas inlet pipeline conveys medium-pressure natural gas, and the medium-pressure natural gas is regulated to low-pressure natural gas through the first pressure regulator; the natural gas is conveyed to the conveying pipeline, so that a pressure difference is formed between the natural gas in the conveying pipeline and the natural gas in the gas inlet pipeline, then the second switch valve and the third switch valve are opened, a small part of the natural gas in the gas inlet pipeline enters the buffer pipe through the pressure difference to be mixed with the odorous liquid, and finally the gas is conveyed into the gas conveying pipeline, so that odorization of the gas is realized; the whole structure is practical and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of gas, in particular to a gas odorizing device. Background Art

[0002] The primary purpose of natural gas odorization is to ensure user safety. Natural gas itself is a colorless, odorless, and flammable gas. Leaks in enclosed rooms are difficult to detect, increasing the risk of accidents. By adding substances with a distinctive odor ("odorant") to natural gas, leaks can be immediately detected, allowing timely measures to avert the danger. Existing natural gas odorization methods mostly involve directly adding an odorizing liquid to the natural gas being transported. This slows down the injection of the odorizing liquid and causes changes in the natural gas pressure, impacting normal natural gas delivery. Publication No. CN220228766U discloses a gas odorization device comprising an odorizing storage tank. A control box is mounted on one side of the tank. A PLC controller is located at the bottom of the control box. A connecting cable is attached to the lower end of the PLC controller. An online tetrahydrothiophene concentration monitor is located at the end of the connecting cable away from the PLC controller. A draw pipe is mounted on one inner wall of the tank. A liquid level gauge is located on the outer periphery of the draw pipe. A feed pipe is located on one side of the tank. The device is unable to increase the injection rate of the odorous liquid and regulate the pressure of the natural gas. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a practical and reliable gas odorizing device.

[0004] To achieve the above-mentioned object, the present invention provides a solution as follows: a gas odorizing device, comprising a housing, an air intake pipe, a gas transmission pipe, a first pressure regulator, and an odorous liquid storage tank; the housing is provided with an air intake pipe, a gas transmission pipe, a first pressure regulator, and an odorous liquid storage tank; the air intake pipe is connected to the first pressure regulator, the first pressure regulator is connected to the gas transmission pipe, the air intake pipe is connected to a second on-off valve, the second on-off valve is connected to a buffer pipe, the buffer pipe is connected to a third on-off valve, and the third on-off valve is connected to the gas transmission pipe;

[0005] Wherein, a discharge pipe is provided on the buffer pipe, the discharge pipe is connected to the odorous liquid storage tank, and a first switch valve is provided on the discharge pipe.

[0006] The beneficial effects of the present invention are as follows: odorization and pressure regulation are achieved. The device first sets up an odorous liquid storage tank, opens the first switch valve to transport the odorous liquid in the odorous liquid storage tank to the buffer tube for filling, and then sets up an air intake pipe, a gas transmission pipe, and a first pressure regulator. The air intake pipe transports medium-pressure natural gas, which is adjusted to low-pressure natural gas through the first pressure regulator and transported to the transmission pipe, so that a pressure difference is formed between the natural gas in the transmission pipe and the natural gas in the air intake pipe. Then, by opening the second switch valve and the third switch valve, a small part of the natural gas in the air intake pipe enters the buffer tube through the pressure difference and mixes with the odorous liquid, and finally is transported to the gas transmission pipe, so that the odorization of the gas is achieved. The overall structure is practical and reliable.

[0007] Furthermore, a first air guide pipe is provided on the air intake pipe, and the first air guide pipe is connected to the second switch valve.

[0008] Furthermore, a second air guide pipe is provided on the gas transmission pipeline, and the second air guide pipe is connected to a third switch valve.

[0009] Furthermore, the gas transmission pipeline is connected to a second pressure regulator, and the second pressure regulator is connected to a gas outlet pipeline. After adopting the above structure, the utility model realizes a second pressure regulation to adjust the natural gas mixed with the odorous liquid to a set pressure value.

[0010] Furthermore, the outer side wall of the odorous liquid storage tank is provided with a scale bar, which extends vertically. After the utility model adopts the above structure, the amount of odorous liquid stored in the odorous liquid storage tank can be accurately known.

[0011] Furthermore, a liquid inlet pipe is provided on the top of the odorous liquid storage tank, and a fourth switch valve is provided on the liquid inlet pipe. After the utility model adopts the above structure, the odorous liquid can be replenished by opening the fourth switch valve.

[0012] Furthermore, the first pressure regulator is connected to a filter, and the filter is connected to a gas pipeline.

[0013] Furthermore, the filter comprises a housing and a filter cartridge. A filter chamber is formed within the housing. The filter chamber has sidewalls formed with an air inlet and an air outlet. The air inlet is connected to a first pressure regulator, and the air outlet is connected to a gas pipeline. A position limiter is formed within the filter chamber, which is used to secure the filter cartridge, which covers the air outlet. The present invention utilizes this structure to filter impurities within natural gas. The position limiter secures the filter cartridge, preventing incomplete filtration of impurities due to swinging of the filter cartridge during natural gas filtration.

[0014] Furthermore, a top cover is detachably provided on the top of the filter, an opening is provided on the top of the filter chamber, and the top cover is used to cover the opening. After the utility model adopts the above structure, the top cover is provided to facilitate the removal, cleaning or replacement of the filter cartridge.

[0015] Furthermore, pressure gauges are respectively provided between the first pressure regulator and the filter, and on the air outlet pipe and the liquid inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structure diagram of the utility model.

[0017] Figure 2 This is a top view of the internal structure of the filter of the present invention.

[0018] Among them, 1 is a box body, 2 is an air inlet pipe, 21 is a first air duct, 22 is a fifth switch valve, 3 is a gas transmission pipe, 31 is a second air duct, 32 is a sixth switch valve, 41 is a first pressure regulator, 42 is a second pressure regulator, 43 is a pressure gauge, 5 is a filter, 51 is a shell, 52 is a filter cartridge, 53 is a filter chamber, 531 is an air inlet, 532 is an air outlet, 533 is a limit part, 54 is a top cover, 61 is a second switch valve, 62 is a buffer tube, 63 is a third switch valve, 7 is a odorous liquid storage tank, 71 is a liquid outlet pipe, 72 is the third switch valve, 73 is a liquid inlet pipe, 74 is a fourth switch valve, 75 is a scale bar, and 8 is an air outlet pipe. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] See attached Figure 1 To the attached Figure 2As shown, a gas odorizing device includes a box body 1, an air intake pipe 2, a gas transmission pipe 3, a first pressure regulator 41, and an odorous liquid storage tank 7. The air intake pipe 2, the gas transmission pipe 3, the first pressure regulator 41, and the odorous liquid storage tank 7 are arranged in the box body 1. The air intake pipe 2 is connected to the first pressure regulator 41, the first pressure regulator 41 is connected to the gas transmission pipe 3, the air intake pipe 2 is connected to the second switch valve 61, the second switch valve 61 is connected to the buffer pipe 62, the buffer pipe 62 is connected to the third switch valve 63, and the third switch valve 63 is connected to the gas transmission pipe 3.

[0022] The buffer tube 62 is provided with a discharge pipe 71 , which is connected to the odorous liquid storage tank 7 , and the discharge pipe 71 is provided with a first switch valve 72 .

[0023] In this embodiment, the air intake pipe 2 is provided with a first air duct 21 connected to the second switch valve 61 , and the air intake pipe 2 is provided with a fifth switch valve 22 located downstream of the first air duct 21 .

[0024] In this embodiment, a second air duct 31 is provided on the gas delivery pipeline 3 , and the second air duct 31 is connected to the third switch valve 63 . A sixth switch valve 32 is provided on the air intake pipeline 3 , and the sixth switch valve 32 is located upstream of the second air duct 31 .

[0025] In this embodiment, the gas transmission pipeline 3 is connected to a second pressure regulator 42 , and the second pressure regulator 42 is connected to a gas outlet pipeline 8 .

[0026] In this embodiment, a scale bar 75 is provided on the outer side wall of the odorous liquid storage tank 7, and the scale bar 75 extends vertically.

[0027] In this embodiment, a liquid inlet pipe 73 is provided on the top of the odorous liquid storage tank 7 , and a fourth switch valve 74 is provided on the liquid inlet pipe 73 .

[0028] In this embodiment, the first pressure regulator 41 is connected to a filter, and the filter is connected to the gas pipeline 3; the filter includes a shell 51 and a filter core 52, and a filter chamber 53 is formed in the shell 51, and the side walls of the filter chamber 53 are respectively provided with an air inlet 531 and an air outlet 532, the air inlet 531 is connected to the first pressure regulator 41, and the air outlet 532 is connected to the gas pipeline 3, wherein a limiting portion 533 is formed in the filter chamber 53, and the limiting portion 533 is used to fix the filter core 52, and the filter core 52 is used to cover the air outlet 532; a top cover 54 is detachably provided on the top of the filter, and an opening is opened at the top of the filter chamber 53, and the top cover 54 is used to seal the opening.

[0029] In this embodiment, pressure gauges 43 are respectively provided between the first pressure regulator 41 and the filter, in the air outlet pipe 8 , and in the liquid inlet pipe 73 .

[0030] In this embodiment, the specific odorization process is as follows: first, the fourth switch valve 74 is opened to input the odorous liquid into the odorous liquid storage tank 7, and then the first switch valve 72 is opened to transfer the odorous liquid in the odorous liquid storage tank 7 to the buffer pipe 62. At this time, the second switch valve 61 and the third switch valve 63 are both in the closed state. After the odorous liquid fills the buffer pipe 62, the first switch valve 72 is closed.

[0031] Under normal conditions, the fifth switch valve 22 and the sixth switch valve 32 are both open, and medium-pressure natural gas is input from the air inlet pipe 2, and then transported to the first pressure regulator 41 for the first pressure regulation to regulate the medium-pressure natural gas to low-pressure natural gas. After filtering through the filter, it is transported to the delivery pipe 3 and finally transported to the second pressure regulator 42 for the second pressure regulation. After the pressure regulation is completed, it is output through the air outlet pipe 8.

[0032] Among them, when the odorous liquid fills the buffer tube 62, the first switch valve 72 is closed, and then the second switch valve 61 and the third switch valve 63 are opened. At this time, since the natural gas pressure in the intake pipe 2 is greater than the natural gas pressure in the transmission pipe 3, a pressure difference will be formed, so that a small amount of medium-pressure natural gas enters the buffer tube 62 through the first air duct 21 and mixes with the odorous liquid, thereby achieving odorization of the natural gas. The odorized medium-pressure natural gas is transported to the gas transmission pipe 3 through the second air duct 31 and mixed with the low-pressure natural gas, and then the natural gas pressure is increased to meet the requirements through the second pressure regulator 42.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art may, without departing from the scope of the present invention, utilize the technical content disclosed above to make further possible variations and modifications to the present invention, or to modify the present invention into equivalent embodiments with equivalent variations. Therefore, any equivalent variations made in accordance with the principles of the present invention without departing from the scope of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A gas odorizing device, comprising a housing (1), an air inlet pipe (2), a gas transmission pipe (3), a first pressure regulator (41), and an odorous liquid storage tank (7), characterized in that: An air intake pipe (2), an air delivery pipe (3), a first pressure regulator (41), and an odorous liquid storage tank (7) are provided in the box (1); the air intake pipe (2) is connected to the first pressure regulator (41), the first pressure regulator (41) is connected to the air delivery pipe (3), the air intake pipe (2) is connected to a second switch valve (61), the second switch valve (61) is connected to a buffer pipe (62), the buffer pipe (62) is connected to a third switch valve (63), and the third switch valve (63) is connected to the air delivery pipe (3); The buffer tube (62) is provided with a discharge pipe (71), the discharge pipe (71) is connected to the odorous liquid storage tank (7), the discharge pipe (71) is provided with a first switch valve (72), the gas transmission pipeline (3) is connected to a second pressure regulator (42), and the second pressure regulator (42) is connected to an outlet pipe (8).

2. A gas odorizing device according to claim 1, characterized in that: The air intake pipe (2) is provided with a first air guide pipe (21), and the first air guide pipe (21) is connected to a second switch valve (61).

3. A gas odorizing device according to claim 1, characterized in that: A second air guide pipe (31) is provided on the gas transmission pipeline (3), and the second air guide pipe (31) is connected to a third switch valve (63).

4. A gas odorizing device according to claim 1, characterized in that: The outer side wall of the odorous liquid storage tank (7) is provided with a scale bar (75), and the scale bar (75) extends vertically.

5. A gas odorizing device according to claim 1, characterized in that: A liquid inlet pipe (73) is provided on the top of the odorous liquid storage tank (7), and a fourth switch valve (74) is provided on the liquid inlet pipe (73).

6. A gas odorizing device according to claim 1, characterized in that: The first pressure regulator (41) is connected to a filter, and the filter is connected to the gas pipeline (3).

7. A gas odorizing device according to claim 6, characterized in that: The filter comprises a shell (51) and a filter cartridge (52); a filter chamber (53) is formed in the shell (51); an air inlet (531) and an air outlet (532) are respectively opened on the side walls of the filter chamber (53); the air inlet (531) is connected to a first pressure regulator (41); and the air outlet (532) is connected to a gas pipeline (3); a limiting portion (533) is formed in the filter chamber (53); the limiting portion (533) is used to fix the filter cartridge (52); and the filter cartridge (52) is used to cover the air outlet (532).

8. A gas odorizing device according to claim 7, characterized in that: A top cover (54) is detachably provided on the top of the filter, an opening is provided on the top of the filter chamber (53), and the top cover (54) is used to seal the opening.

9. A gas odorizing device according to claim 8, characterized in that: Pressure gauges (43) are respectively provided between the first pressure regulator (41) and the filter, the air outlet pipe (8), and the liquid inlet pipe (73).

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