A gas odorant content control device

Abstract

The utility model discloses a kind of fuel gas odorant content control devices, belong to fuel gas delivery technical field.A kind of fuel gas odorant content control device, including fuel gas pipe, the fuel gas pipe includes broad pipe part, narrow pipe part;Several branch pipes are provided at the narrow pipe part, the main mixing pipe that is communicated is provided at the narrow pipe part, the auxiliary mixing pipe that is communicated is provided at the branch pipe;Static mixer is provided in the main mixing pipe and auxiliary mixing pipe;Feed pipe is provided at the fuel gas pipe.The utility model provides a kind of fuel gas odorant content control device, when fuel gas pressure exceeds limit value, the power pump at corresponding auxiliary mixing pipe is opened, odorant is sent to the inside of auxiliary mixing pipe, let fuel gas and odorant can be mixed inside auxiliary mixing pipe, so as to share fuel gas, reach the gas pressure function of control static mixer front end portion pipeline, let the gas pressure of pipeline fuel gas be in the design range of pipeline.

Description

Technical Field

[0001] This utility model belongs to the field of gas transmission technology, specifically relating to a gas odorant content control device. Background Technology

[0002] Natural gas is a flammable and explosive gas, colorless, odorless, and non-toxic. The odor in natural gas is the smell of an odorant added to facilitate the detection of leaks. Odorizing natural gas involves adding a flavored liquid agent to colorless and odorless gas. As the agent vaporizes, it imparts a distinctive odor to the gas, ensuring that leaks can be detected immediately by people or instruments.

[0003] Current gas odorization devices incorporate a mixing mechanism at the gas pipeline to accelerate the mixing of gas and odorant. While this mechanism speeds up the mixing process, it can also obstruct gas transport, leading to higher pressure in the pipeline upstream of the mixing mechanism. If this pressure exceeds the pipeline's limit, it can reduce the pipeline's lifespan. Therefore, this application proposes a gas odorant content control device. Utility Model Content

[0004] The purpose of this utility model is to provide a gas odorant content control device to solve the problem mentioned in the background art that, although the mixing mechanism at the gas pipeline can accelerate the mixing speed between gas and odorant, it can also hinder the transportation of gas and easily cause the gas pressure at the pipeline in front of the mixing mechanism to exceed the pressure bearing value of the pipeline design.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas odorant content control device, comprising a gas pipe, wherein the gas pipe includes a wide section and a narrow section; The narrow section is provided with several branch pipes, the narrow section is provided with a main mixing pipe that is connected, and the branch pipes are provided with auxiliary mixing pipes that are connected. Both the main mixing pipe and the auxiliary mixing pipe are equipped with static mixers; The gas pipe is equipped with an inlet pipe, a main pipe connected to the inlet pipe, a conveying pipe connected to the main pipe, and a storage box connected to the conveying pipe for storing odorant. The delivery pipeline is equipped with a power pump to provide thrust for the flow of odorant, a flow meter to measure the amount of odorant in the delivery pipeline, and a one-way valve that only allows atomized odorant to enter the static mixer at the connection between the main pipeline and the feed pipe.

[0006] Preferably, the inner diameter of the pipe at the wide section is larger than the inner diameter of the pipe at the narrow section.

[0007] Preferably, the static mixer includes spirally distributed guide plates.

[0008] Preferably, the auxiliary mixing pipe is closed at the end, and a return pipe connected to the main mixing pipe is inserted into the end of the auxiliary mixing pipe. A one-way valve is provided at the return pipe to allow gas to enter the main mixing pipe only from the auxiliary mixing pipe.

[0009] Preferably, an mounting plate is provided at the feed pipe, the feed pipe penetrates the mounting plate, one mounting plate abuts against the outer wall of the main mixing pipe, and the other mounting plate abuts against the outer wall of the auxiliary mixing pipe.

[0010] Preferably, a mounting bracket is provided at the storage box, and the mounting bracket is attached to the outer wall of the main mixing pipe and the auxiliary mixing pipe.

[0011] Preferably, the branch pipe is provided with a flow splitting and closing component, which is used to connect the gas pipe to the auxiliary mixing pipe after the gas pressure in the gas pipe exceeds a certain value.

[0012] Preferably, the diversion opening and closing component includes an upper connecting pipe and a lower connecting pipe, with an upper exhaust hole provided inside the upper connecting pipe.

[0013] Preferably, the lower connecting pipe is provided with a lower exhaust hole, the upper connecting pipe and the lower connecting pipe are slidably fitted, and the lower connecting pipe is installed on the inner wall of the branch pipe.

[0014] Preferably, an elastic component is provided between the lower connecting pipe and the upper connecting pipe, the elastic component being used to provide an elastic force for the upper connecting pipe to move upward.

[0015] Beneficial effects: This utility model provides a gas odorant content control device, which sets up a static mixer composed of guide plates inside the main mixing pipe and the auxiliary mixing pipe. The guide plates are spirally distributed in the pipe to guide the movement of gas and odorant, allowing gas and odorant to spiral inside the pipe. The change in airflow direction and the increase in actual travel distance allow gas and odorant to be fully mixed.

[0016] When the gas pressure exceeds the limit, the upper connecting pipe moves downward under the pressure of the gas pressure, squeezing the elastic component and aligning the upper exhaust port with the lower exhaust port in the lower connecting pipe. In this way, the gas can enter the interior of the auxiliary mixing pipe from the upper and lower exhaust ports. At this time, the power pump at the corresponding auxiliary mixing pipe can be turned on to send the odorant into the auxiliary mixing pipe, allowing the gas and odorant to mix inside the auxiliary mixing pipe. This can distribute the gas and achieve the function of controlling the gas pressure of the front part of the pipeline of the static mixer, so that the gas pressure in the pipeline is within the design range of the pipeline. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the gas odorant content control device in this utility model; Figure 2 This is a side view of the gas odorant content control device of this utility model; Figure 3 This is a schematic diagram of the internal structure of the gas odorant content control device in this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Gas pipe; 101. Wide section; 102. Narrow section; 103. Branch pipe; 2. Main mixing pipe; 3. Auxiliary mixing pipe; 4. Static mixer; 5. Feed pipe; 6. Main pipeline; 7. Conveying pipeline; 8. Storage tank; 9. Power pump; 10. Flow meter; 11. Mounting plate; 12. Mounting bracket; 13. Diverter opening and closing assembly; 1301. Upper connecting pipe; 1302. Upper vent; 1303. Lower connecting pipe; 1304. Lower vent; 1305. Flexible assembly. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] like Figures 1-4 As shown in the figure, the present invention provides a gas odorant content control device, including a gas pipe 1, which includes a wide pipe section 101 and a narrow pipe section 102. By dividing the gas pipe 1 into a wide pipe section 101 and a narrow pipe section 102, the inner diameter of the pipe at the wide pipe section 101 is larger than the inner diameter of the pipe at the narrow pipe section 102. Under the premise of constant flow rate, the cross-sectional area at the narrow pipe section 102 is reduced, so the gas flow velocity at the narrow pipe section 102 increases, and the gas flows faster along the static mixer 4, which helps to mix the gas and the odorant.

[0021] One of the commonly used odorants is tetrahydrosalpinx, and the amount added is in accordance with relevant regulations and will not cause any harm to the human body.

[0022] Specifically, a number of branch pipes 103 are provided at the narrow pipe section 102. A main mixing pipe 2 is provided at the narrow pipe section 102, and an auxiliary mixing pipe 3 is provided at the branch pipe 103. The end of the auxiliary mixing pipe 3 is closed, and a return pipe connected to the main mixing pipe 2 is inserted into the end of the auxiliary mixing pipe 3. A one-way valve is provided at the return pipe, which only allows gas to enter the main mixing pipe 2 from the auxiliary mixing pipe 3.

[0023] More specifically, in order to ensure that the gas and odorant in the gas pipe 1 are mixed quickly and evenly, static mixers 4 are installed in both the main mixing pipe 2 and the auxiliary mixing pipe 3. The static mixer 4 includes spirally distributed guide plates. The guide plates are spirally distributed in the pipe to guide the movement of the gas and odorant, allowing the gas and odorant to spiral inside the pipe. The change in airflow direction and the increase in actual travel distance allow the gas and odorant to be fully mixed.

[0024] In order to deliver the odorant into the gas pipe 1, an inlet pipe 5, a main pipe 6 connected to the inlet pipe 5, a conveying pipe 7 connected to the main pipe 6, and a storage box 8 connected to the conveying pipe 7 and used to store the odorant are provided at the gas pipe 1.

[0025] Specifically, one set of feed pipes 5 is inserted into the main mixing pipe 2, and a feed pipe 5 is set within a single pitch of the guide plate. The corresponding auxiliary mixing pipe 3 also adopts the same structure, so that the odorant can be directly delivered to various positions of the static mixer 4, allowing the gas and odorant to be fully mixed.

[0026] It should be noted that a power pump 9 for providing thrust for the flow of odorant and a flow meter 10 for measuring the amount of odorant in the delivery pipeline 7 are installed at the delivery pipeline 7. By controlling the power of the power pump 9, the flow rate of odorant is adjusted, thereby controlling the content of odorant in the gas. In addition, a one-way valve is installed at the position where the main pipeline 6 connects with the feed pipe 5, which only allows the atomized odorant to enter the static mixer 4.

[0027] Specifically, an mounting plate 11 is provided at the feed pipe 5. The feed pipe 5 penetrates the mounting plate 11. One mounting plate 11 abuts against the outer wall of the main mixing pipe 2, and the other mounting plate 11 abuts against the outer wall of the auxiliary mixing pipe 3.

[0028] More specifically, a mounting bracket 12 is provided at storage box 8, and the mounting bracket 12 is attached to the outer wall of the main mixing pipe 2 and the auxiliary mixing pipe 3.

[0029] In order to enable the auxiliary mixing pipe 3 to start when the gas pressure in the gas pipe 1 is too high, a diversion opening and closing component 13 is provided at the branch pipe 103. The diversion opening and closing component 13 is used to connect the gas pipe 1 and the auxiliary mixing pipe 3 after the gas pressure in the gas pipe 1 exceeds the limit value.

[0030] Specifically, the diversion opening and closing component 13 includes an upper connecting pipe 1301 and a lower connecting pipe 1303. The upper connecting pipe 1301 is provided with an upper vent hole 1302, and the lower connecting pipe 1303 is provided with a lower vent hole 1304. The upper connecting pipe 1301 and the lower connecting pipe 1303 are slidably engaged. The lower connecting pipe 1303 is installed on the inner wall of the branch pipe 103, and an elastic component 1305 is provided between the lower connecting pipe 1303 and the upper connecting pipe 1301. The elastic component 1305 is used to provide an elastic force for the upper connecting pipe 1301 to move upward. The elastic component 1305 can be a spring. In a specific embodiment, a metal spring with a wire diameter of 8mm and a length of 2cm can be used.

[0031] In a specific embodiment, gas pipe 1 is a Class A medium-pressure gas pipeline. During normal transmission, the gas pressure is 0.2-0.3 MPa. When the gas pressure exceeds the limit (when the gas pressure reaches 0.34 MPa), under the pressure of the gas pressure, the upper connecting pipe 1301 moves downward, squeezing the elastic component 1305, and aligning the upper exhaust port 1302 with the lower exhaust port 1304 in the lower connecting pipe 1303. In this way, the gas can enter the interior of the auxiliary mixing pipe 3 from the upper exhaust port 1302 and the lower exhaust port 1304. At this time, the power pump 9 at the corresponding auxiliary mixing pipe 3 can be turned on to send the odorant into the interior of the auxiliary mixing pipe 3, allowing the gas and odorant to mix inside the auxiliary mixing pipe 3. To control the start of the power pump 9, a pressure sensor can be installed in the gas pipe 1. The power pump 9 is controlled by a PLC program to turn on when the pressure detected by the pressure sensor exceeds 0.34 MPa.

[0032] In summary, this utility model embodiment provides a gas odorant content control device. A static mixer 4 composed of guide plates is installed inside the main mixing pipe 2 and the auxiliary mixing pipe 3. The guide plates are spirally distributed inside the pipe to guide the movement of gas and odorant, allowing gas and odorant to spiral inside the pipe. The change in airflow direction and the increase in actual travel distance allow gas and odorant to be fully mixed.

[0033] When the gas pressure exceeds the limit, the upper connecting pipe 1301 moves downward under the pressure of the gas pressure, squeezing the elastic component 1305 and aligning the upper exhaust port 1302 with the lower exhaust port 1304 in the lower connecting pipe 1303. In this way, the gas can enter the interior of the auxiliary mixing pipe 3 from the upper exhaust port 1302 and the lower exhaust port 1304. At this time, the power pump 9 at the corresponding auxiliary mixing pipe 3 can be turned on to send the odorant into the interior of the auxiliary mixing pipe 3, so that the gas and the odorant can be mixed inside the auxiliary mixing pipe 3.

[0034] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A gas odorant content control device, comprising a gas pipe (1), characterized in that, The gas pipe (1) includes a wide pipe section (101) and a narrow pipe section (102). The narrow tube section (102) is provided with a plurality of branch pipes (103), the narrow tube section (102) is provided with a main mixing pipe (2) that is connected, and the branch pipes (103) are provided with auxiliary mixing pipes (3) that are connected. Both the main mixing pipe (2) and the auxiliary mixing pipe (3) are equipped with static mixers (4). The gas pipe (1) is provided with an inlet pipe (5), a main pipe (6) connected to the inlet pipe (5), a conveying pipe (7) connected to the main pipe (6), and a storage box (8) connected to the conveying pipe (7) and used to store the odorant. The delivery pipe (7) is equipped with a power pump (9) for providing thrust for the flow of odorant, a flow meter (10) for measuring the amount of odorant in the delivery pipe (7), and a one-way valve is provided at the position where the main pipe (6) connects with the feed pipe (5) to allow only the atomized odorant to enter the static mixer (4).

2. The gas odorant content control device as described in claim 1, characterized in that, The inner diameter of the pipe at the wide section (101) is greater than the inner diameter of the pipe at the narrow section (102).

3. The gas odorant content control device as described in claim 1, characterized in that, The static mixer (4) includes spirally distributed guide plates.

4. The gas odorant content control device as described in claim 1, characterized in that, The auxiliary mixing pipe (3) is closed at the end, and a return pipe connected to the main mixing pipe (2) is inserted at the end of the auxiliary mixing pipe (3). A one-way valve is provided at the return pipe, which only allows gas to enter the main mixing pipe (2) from the auxiliary mixing pipe (3).

5. The gas odorant content control device as described in claim 1, characterized in that, An mounting plate (11) is provided at the feed pipe (5). The feed pipe (5) penetrates the mounting plate (11). One mounting plate (11) abuts against the outer wall of the main mixing pipe (2), and the other mounting plate (11) abuts against the outer wall of the auxiliary mixing pipe (3).

6. The gas odorant content control device as described in claim 1, characterized in that, A mounting bracket (12) is provided at the storage box (8), and the mounting bracket (12) is attached to the outer wall of the main mixing pipe (2) and the auxiliary mixing pipe (3).

7. The gas odorant content control device as described in claim 1, characterized in that, A diversion opening and closing component (13) is provided at the branch pipe (103). The diversion opening and closing component (13) is used to connect the gas pipe (1) to the auxiliary mixing pipe (3) after the gas pressure in the gas pipe (1) exceeds the limit value.

8. The gas odorant content control device as described in claim 7, characterized in that, The diversion opening and closing component (13) includes an upper connecting pipe (1301) and a lower connecting pipe (1303), and an upper exhaust hole (1302) is provided inside the upper connecting pipe (1301).

9. A gas odorant content control device as described in claim 8, characterized in that, The lower connecting pipe (1303) is provided with a lower exhaust hole (1304), the upper connecting pipe (1301) and the lower connecting pipe (1303) are slidably engaged, and the lower connecting pipe (1303) is installed on the inner wall of the branch pipe (103).

10. A gas odorant content control device as described in claim 9, characterized in that, An elastic component (1305) is provided between the lower connecting pipe (1303) and the upper connecting pipe (1301). The elastic component (1305) is used to give the upper connecting pipe (1301) an elastic force to move upward.

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