Fuel gas vortex cold and hot environment-friendly separation device

Abstract

The utility model relates to the technical field of natural gas pipe networks, in particular to a fuel gas vortex cold and hot environment-friendly separation device. Comprising a shell, a swirl chamber, an air inlet, a hot end pipe, a cold end pipe, heat exchange pieces and a high-pressure air inlet, the swirl chamber is located in the shell, one end of the swirl chamber is connected with the hot end pipe, the other end of the swirl chamber is connected with the cold end pipe, the heat exchange pieces are arranged on the outer wall of the hot end pipe, the air inlet is formed in the side, where the hot end pipe is located, of the shell, and the high-pressure air inlet is formed in the shell and communicated with the swirl chamber. And the nozzle is positioned in the high-pressure air inlet and extends into the vortex chamber. A first adjusting valve is arranged on the side, close to the hot end pipe, of the shell, and the cold end pipe is connected with a second adjusting valve. The device is simple in structure and low in cost, an external heat source is not needed, and cold and hot environment-friendly airflow separation can be achieved as long as airflow passes through.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas pipe network technical field more specifically, relate to a kind of gas vortex cold and hot environmental protection separation device. BACKGROUND

[0002] In natural gas pressure regulating station, to prevent gas equipment ice block in winter low temperature operation, generally adopt field station electric heating, water bath heater or electric heat tracing system to provide heat source for gas equipment.For example, the Chinese utility model patent with patent No.CN201721070236.8 discloses an electric heat tracing system, however, electric power energy is used for heating, such as electric heat tracing, long-term power-on leads to large power consumption, low heat exchange efficiency, is easy to damage and needs to be replaced in long time use, and operation cost is high.Moreover, gas field station has flammable and explosive characteristics, electric heater has the risk of generating electric spark, and cannot guarantee the anti-freezing performance of equipment when the temperature is relatively low, and there are safety hazards in the large-scale application of field station. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a kind of gas vortex cold and hot environmental protection separation device, which is applied to natural gas pressure regulating station, to solve the problem of large energy consumption and safety hazards of natural gas field station using electric heat tracing system and other devices in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A kind of gas vortex cold and hot environmental protection separation device, including shell, vortex chamber, gas inlet, hot end pipe, cold end pipe, heat exchange fin and high-pressure gas inlet, vortex chamber is located inside the shell, one end of vortex chamber is connected with hot end pipe, the other end is connected with cold end pipe, heat exchange fin is arranged on the outer wall of hot end pipe, gas inlet is opened on the shell on the side where hot end pipe is located, high-pressure gas inlet is opened in the communication between shell and vortex chamber.

[0006] Further, it further includes a nozzle, which is located in the high-pressure gas inlet and extends into the vortex chamber.

[0007] Further, an adjusting valve one is arranged on the shell near the side where the hot end pipe is located, and the cold end pipe is connected with an adjusting valve two.

[0008] Further, a commander is installed on the main pipeline of natural gas, the upstream pipeline of the commander is connected with a branch one, the branch one is connected with the gas inlet and the high-pressure gas inlet respectively, the adjusting valve two is connected to a branch two, the branch two is connected to the downstream pipeline of the commander, the adjusting valve one is connected with a branch three, the branch three is connected to the downstream pipeline of the commander, a pressure regulator is arranged on the branch three, a branch four is connected between the commander and the pressure regulator, and a branch five is connected between the commander and the downstream main pipeline thereof.

[0009] Compared with the prior art, the utility model has the beneficial technical effects as follows:

[0010] The vortex cold and hot environmental protection separation device is compared with the traditional electric heater, and has the advantages of simple structure, low cost and long service life.

[0011] The device has no moving parts, is fully enclosed and has no leakage, and is pressure-resistant, temperature-resistant and corrosion-resistant. The device does not need any external heat source such as power supply and hot water, and can realize cold and hot environmental protection separation of airflow as long as there is airflow passing through, without worrying about overheating. The old equipment can be transformed, and the device is safe, environmentally friendly, high in heating efficiency, and can realize safe gas transmission guarantee through transformation of the pressure regulating branch of the gas station, improve the safety and stability of the gas pressure regulator, avoid the interruption of gas transmission caused by ice blockage, and effectively avoid safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 For Figure 1 Figure 1 is a schematic diagram of the overall structure of the device of the present application;

[0013] Figure 2 Figure 2 is a schematic diagram of the installation of the device of the present application in the pipe network;

[0014] Figure 3 Figure 3 is a schematic diagram of the internal structure of the vortex chamber.

[0015] Figure 1 is a schematic diagram of the overall structure of the device of the present application; DETAILED DESCRIPTION

[0016] The scheme of the present application will be further described below by means of the drawings and examples.

[0017] As Figure 1As shown, a gas vortex hot and cold environmental protection separation device includes a shell 1, a hot end pipe 2, a heat exchange plate 3, a regulating valve 4, a vortex chamber 5, a regulating valve 6, an air inlet 7, a nozzle 8, a high-pressure air inlet 9, and a cold end pipe 10. The vortex chamber 5 is located inside the shell 1, with one end connected to the hot end pipe 2 and the other end connected to the cold end pipe 10. The heat exchange plate 3 is disposed on the outer wall of the hot end pipe 2. The air inlet 7 is opened on the shell 1 on the side where the hot end pipe 2 is located. The high-pressure air inlet 9 is opened on the shell 1 and communicates with the vortex chamber 5. The nozzle 8 is located inside the high-pressure air inlet 9 and extends into the vortex chamber 5. The regulating valve 4 is installed on the shell 1 near the side where the hot end pipe 2 is located. The cold end pipe 10 is connected to the regulating valve 6.

[0018] Example:

[0019] like Figure 2 As shown, a controller 11 is installed on the main natural gas pipeline. The upstream pipeline of the controller 11 is connected to a branch line 13, which is connected to the gas inlet 7 and the high-pressure gas inlet 9 respectively. A regulating valve 2 6 is connected to a branch line 2 14, which is connected to the downstream pipeline of the controller 11. A regulating valve 1 4 is connected to a branch line 3 15, which is connected to the downstream pipeline of the controller 11. A pressure regulator 12 is installed in the branch line 3 15. A branch line 4 16 is connected between the controller 11 and the pressure regulator 12. A branch line 5 17 is connected between the controller 11 and its downstream main pipeline.

[0020] Depending on user and operational requirements, pressure regulation (pressure reduction) and flow rate regulation are often necessary for gas transportation. During gas transportation, after the gas flow passes through this device, based on the gas vortex separation characteristics, the high-pressure gas rotates at high speed, causing vortex separation and separating low-pressure cold and hot gas flows. Convection exchange technology can be used to obtain cold and heat sources. When there is a pressure difference between the gas flow before and after the pressure regulator in the pressure regulating branch, the high-pressure gas passes through the separation device to separate the hot gas flow, which heats the gas entering the gas pressure regulating valve pilot. The heated gas then enters the pilot valve chamber, solving the problem of nozzle icing and ensuring stable operation of the pressure regulator. Furthermore, this technology can be used before the dehydration unit to obtain low-temperature dry gas, thereby reducing the scale and investment of the purification and dehydration equipment. This technology can also be applied to natural gas dew point control devices, similarly reducing engineering investment and improving the safety of production operations.

[0021] By installing eddy current hot and cold gas separators on the gas transmission branch lines of natural gas stations, the outlet gas temperature of the hot gas stream after separation was measured, and the hot gas stream separation characteristics were analyzed. The gas temperature connected to the separator is the inlet gas temperature of the gas transmission station, which is collected and read through an inlet temperature transmitter or thermometer. Parameters were compiled by continuously measuring the gas flow pressure, gas temperature, and ambient temperature at each port of the separator.

[0022] Table 1.

[0023]

[0024] The working principle of the utility model is:

[0025] The high-pressure gas of the gas pipe network enters the nozzle 8 through the high-pressure gas inlet 9, and is injected into the vortex chamber 5 from the tangent direction, expands in the vortex chamber 5 to generate centrifugal effect, rotates at high speed to form vortex airflow, after the airflow rotates at high speed along the inner wall of the vortex chamber 5, the gas generates higher temperature in the outer layer adiabatic compression process, and generates lower temperature in the inner layer adiabatic expansion process, due to the different speeds of the inner and outer layers of the gas, the energy is transferred to the airflow with lower angular velocity of the outer layer, the airflow of the inner layer loses energy and moves at a reduced speed, the temperature is reduced, the cold airflow is led out through the center of the inner layer to the cold end pipe 10, and the cold airflow is separated. The outer layer airflow receives the energy lost by the inner layer airflow, the outer layer airflow is accelerated, and at the same time, the outer layer airflow is rubbed with the wall of the hot end pipe 2, part of kinetic energy is converted into heat energy, so that the temperature of the outer layer airflow rises, the temperature is transferred outward through the wall of the hot end pipe 2, the low-temperature gas entering through the gas inlet 7 is heated through the heat exchange sheet 3, the heated gas is discharged to the required place through the adjusting valve one 4, and the separated cold gas and the cold gas after heat exchange are discharged to the downstream pipeline through the adjusting valve two 6.

[0026] Although the utility model has been described in detail above by general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A gas vortex cold heat environmental protection separating device, characterized in that: The application relates to a natural gas heat exchanger, which comprises a shell (1), a vortex chamber (5), an air inlet (7), a hot-end pipe (2), a cold-end pipe (10), heat exchange fins (3) and a high-pressure air inlet (9), wherein the vortex chamber (5) is arranged in the shell (1), one end of the vortex chamber (5) is connected with the hot-end pipe (2), the other end is connected with the cold-end pipe (10), the heat exchange fins (3) are arranged on the outer wall of the hot-end pipe (2), the air inlet (7) is arranged on the shell (1) on the side where the hot-end pipe (2) is arranged, and the high-pressure air inlet (9) is arranged on the shell (1) and communicates with the vortex chamber (5).

2. The gas vortex cold heat environmental protection separating device according to claim 1, characterized in that: The nozzle (8) is arranged in the high-pressure air inlet (9) and extends into the vortex chamber (5).

3. The gas vortex cold heat environmental protection separating device according to claim 2, characterized in that: The shell (1) is provided with an adjusting valve one (4) on the side close to the hot-end pipe (2), and the cold-end pipe (10) is connected with an adjusting valve two (6).

4. The gas vortex cold heat environmental protection separating device according to claim 3, characterized in that: A commander (11) is arranged on a main pipeline of natural gas, an upstream pipeline of the commander (11) is connected with a branch one (13), the branch one (13) is connected with the air inlet (7) and the high-pressure air inlet (9) respectively, the adjusting valve two (6) is connected with a branch two (14), the branch two (14) is connected with a downstream pipeline of the commander (11), the adjusting valve one (4) is connected with a branch three (15), the branch three (15) is connected with the downstream pipeline of the commander (11), a pressure regulator (12) is arranged on the branch three (15), a branch four (16) is arranged between the commander (11) and the pressure regulator (12), and a branch five (17) is arranged between the commander (11) and the main pipeline downstream of the commander (11).

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