CN216898488U

CN216898488U - Sectional type vortex tube heater

Info

Publication number: CN216898488U
Application number: CN202122119832.3U
Authority: CN
Inventors: 陈志强; 肖吉; 乔群; 史芹芹
Original assignee: Beiqing Jiangsu Environmental Equipment Co ltd
Current assignee: Beiqing Jiangsu Environmental Equipment Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-07-05
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a sectional type vortex tube heater, which comprises a shell, a heat insulation layer, a heat exchange tube, a tube body and an adjusting valve, wherein the heat insulation layer is arranged in the inner layer of the shell; be equipped with the heat transfer cavity in the heat exchange tube, the one end that is close to the body in the heat transfer cavity is equipped with syntropy heat transfer unit, and syntropy heat transfer unit's one end extends to the heat exchange tube other end, and the one end that is close to the closing plate in the heat transfer cavity is equipped with reverse heat transfer unit, and reverse heat transfer unit's one end extends to syntropy heat transfer unit end.

Description

Sectional type vortex tube heater

Technical Field

The utility model relates to the field of natural gas conveying equipment, in particular to a sectional type vortex tube heater.

Background

The natural gas is conveyed from a gas source to a user and needs to pass through matching facilities such as a pressurizing station, a long-distance pipeline, a pressure regulating station, a separate transmission system and the like, wherein the pressure regulating station can be roughly divided into a (secondary) high-medium pressure regulating station, a (secondary) high-low pressure regulating station and a (intermediate-low pressure) pressure regulating station, the flowing situation of the natural gas in the pressure regulating station is an adiabatic expansion process, the Joule-Thomson effect and the first law of thermodynamics can show that the micro appearance of the high-pressure natural gas in the process applies work to the outside in order to reduce internal energy, and the macro appearance is temperature reduction; the related data show that the temperature is reduced by about 1 ℃ when the pressure of the natural gas is reduced by 0.2-0.3 MPa; the pressure difference between an inlet station and an outlet station of the pressure regulating station can reach 3MPa, the temperature is reduced by about 13 ℃, when the lowest temperature is below 10 ℃ in winter, the outlet temperature can be reduced to-3 ℃, because a guide pipe or a valve port of a director of the pressure regulator is relatively small in pipe diameter, the regulated natural gas has water and other impurities, ice blockage is easily formed to cause the abnormal work of the pressure regulator, the high-pressure natural gas directly enters a downstream natural gas pipe network to influence the running safety of the whole pipeline, and therefore, the temperature of the natural gas at the inlet of the pressure regulator is increased to ensure the normal work of the pressure regulator;

at present, methods for improving the air guide temperature commonly used at home and abroad are mainly divided into two types, one is a heating method requiring external energy, such as a pipe electric tracing method, a director heater method and a heat exchanger method; the electric tracing method has the defects of high energy consumption, frequent equipment replacement, inconvenient maintenance and the like; the heating method of the commander is only suitable for medium and small-sized pressure regulating stations, and meanwhile, because of local heating, the temperature of the airflow at the outlet of the pressure regulator cannot be ensured due to overlarge front-back pressure difference of the pressure regulator; the heat exchanger method has the defects of large occupied area, more required equipment, high operation and maintenance cost and the like; the other is a vortex tube heating method without external energy, and high-pressure natural gas is converted into internal energy by utilizing the self mechanical energy of the high-pressure natural gas to heat the pilot gas; the main structural components of the vortex tube heater comprise a metal shell, a heat insulation layer, a heat exchange unit, a vortex generating chamber and a pressure reducing nozzle; when high-pressure natural gas enters the vortex generating chamber, outer-layer airflow is converted into high-temperature airflow under the action of pressure difference, and the high-temperature airflow heats the pilot gas through the heat exchange unit; the vortex tube heating method has the characteristics of simple installation, no external energy consumption, simple operation cost and the like; however, the heating effect of a common vortex tube heater in the market is not ideal, and under an extreme working condition, equipment cannot normally work, so that adverse factors are generated on the safe operation of a pipeline; a segmented vortex tube heater is therefore designed for this situation.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the defects of the technology and provide a sectional type vortex tube heater.

In order to solve the technical problem, the technical scheme provided by the utility model is that the sectional type vortex tube heater comprises: the heat-insulating layer is arranged in the inner layer of the shell, the heat exchange tube is arranged in the shell, an outer heating layer is formed between the heat exchange tube and the shell, the tube body is arranged at one end of the heat exchange tube, a vortex chamber is arranged in the tube body, a vortex chamber local heating area is formed between the tube body and the shell, a sealing plate is arranged at one end, far away from the tube body, in the shell, a hot gas passage is formed between one end, close to the sealing plate, of the heat exchange tube and the sealing plate, the adjusting valve is arranged between the sealing plate and the shell, and two ends of the adjusting valve are respectively connected with the sealing plate and the shell;

a heat exchange cavity is arranged in the heat exchange tube, a homodromous heat exchange unit is arranged at one end, close to the tube body, in the heat exchange cavity, one end of the homodromous heat exchange unit extends towards the other end of the heat exchange tube, a reverse heat exchange unit is arranged at one end, close to the sealing plate, in the heat exchange cavity, one end of the reverse heat exchange unit extends towards the homodromous heat exchange unit, a groove is arranged at the junction of the homodromous heat exchange unit and the reverse heat exchange unit in the heat exchange tube, a baffle is arranged at the junction of the homodromous heat exchange unit and the reverse heat exchange unit in the heat exchange cavity, a pilot gas internal circulation pipeline is arranged in the groove, one end of the pilot gas internal circulation pipeline passes through the baffle and extends to the end provided with the homodromous heat exchange unit, a pilot gas input tube is arranged at one end, close to the tube, of the pilot gas input tube extends out of the shell, and a pilot gas output tube is arranged at one side of the baffle on the heat exchange tube, one end of the first air guide output pipe extends out of the shell;

the shell is symmetrically provided with high-pressure gas input pipes, one ends of the high-pressure gas input pipes extend into the vortex chamber, and one ends of the high-pressure gas input pipes extending into the vortex chamber are provided with pressure reducing nozzles;

and one end of the shell, which is provided with the high-pressure gas input pipe, is provided with a low-pressure gas output pipe.

Compared with the prior art, the utility model has the advantages that: the heat exchange cavity in the heat exchange tube is provided with a cocurrent heat exchange unit and a reverse heat exchange unit, after the pilot gas is input from the pilot gas input tube, the pilot gas is heated in the heating mode of the cocurrent heat exchange unit with high heat transfer efficiency at the front section of the heater and enters the rear section of the heater through the internal circulation pipeline of the pilot gas, and the rear section of the heater is heated in the heating mode of the reverse heat exchange unit with high heat transfer efficiency, so that the heater can perform segmented heating in the heater, and the overall heating efficiency of the heater is improved.

Drawings

FIG. 1 is a schematic view of a first configuration of a segmented vortex tube heater of the present invention.

FIG. 2 is a left side view of a segmented vortex tube heater of the present invention.

Fig. 3 is a cross-sectional view at a-a in fig. 2.

As shown in the figure: 1. the heat exchanger comprises a shell, 2, a heat insulation layer, 3, a heat exchange pipe, 4, a pipe body, 5, a regulating valve, 6, an outer heating layer, 7, a vortex chamber, 8, a vortex chamber local heating area, 9, a sealing plate, 10, a hot gas passage, 11, a heat exchange cavity, 12, a cocurrent heat exchange unit, 13, a groove, 14, a pilot gas internal circulation pipeline, 15, a pilot gas input pipe, 16, a pilot gas output pipe, 17, a high-pressure gas input pipe, 18, a pressure reduction nozzle, 19, a low-pressure gas output pipe, 20, a reverse heat exchange unit, 21 and a baffle.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

With reference to fig. 1-3, a sectional type vortex tube heater comprises a shell 1, a heat insulation layer 2, a heat exchange tube 3, a tube body 4 and an adjusting valve 5, wherein the heat insulation layer 2 is arranged in the inner layer of the shell 1, the heat exchange tube 3 is arranged in the shell 1, an outer heating layer 6 is formed between the heat exchange tube 3 and the shell 1, the tube body 4 is arranged at one end of the heat exchange tube 3, a vortex chamber 7 is arranged in the tube body 4, a local heating region 8 of the vortex chamber is formed between the tube body 4 and the shell 1, a sealing plate 9 is arranged at one end of the shell 1 far away from the tube body 4, a hot gas passage 10 is formed between one end of the heat exchange tube 3 close to the sealing plate 9 and the sealing plate 9, the adjusting valve 5 is arranged between the sealing plate 9 and the shell 1, and two ends of the adjusting valve 5 are respectively connected with the sealing plate 9 and the shell 1;

a heat exchange cavity 11 is arranged in the heat exchange tube 3, a homodromous heat exchange unit 12 is arranged at one end, close to the tube body 4, in the heat exchange cavity 11, one end of the homodromous heat exchange unit 12 extends towards the other end of the heat exchange tube 3, a reverse heat exchange unit 20 is arranged at one end, close to the sealing plate 9, in the heat exchange cavity 11, one end of the reverse heat exchange unit 20 extends towards the end of the homodromous heat exchange unit 12, a groove 13 is arranged at the junction of the homodromous heat exchange unit 12 and the reverse heat exchange unit 20 in the heat exchange tube 3, a baffle 21 is arranged at the junction of the homodromous heat exchange unit 12 and the reverse heat exchange unit 20 in the heat exchange cavity 11, a pilot gas internal circulation pipeline 14 is arranged in the groove 13, one end of the pilot gas internal circulation pipeline 14 passes through the baffle 21 and extends to the end provided with the homodromous heat exchange unit 12, and a pilot gas input tube 15 is arranged at one end, close to the tube body 4, of the heat exchange tube 3, one end of the pilot gas input pipe 15 extends out of the shell 1, one side of the baffle 21 on the heat exchange pipe 3 is provided with a pilot gas output pipe 16, and one end of the pilot gas output pipe 16 extends out of the shell 1;

the shell 1 is symmetrically provided with high-pressure gas input pipes 17, one ends of the high-pressure gas input pipes 17 extend into the vortex chamber 7, and one ends of the high-pressure gas input pipes 17 extending into the vortex chamber 7 are provided with pressure reducing nozzles 18;

the end of the shell 1 provided with the high-pressure gas input pipe 17 is provided with a low-pressure gas output pipe 19.

When the utility model is implemented specifically, when in use, high-pressure fuel gas enters the vortex chamber 7 from the high-pressure gas input pipe 17 to generate energy separation, outer layer hot air flow enters the outer heating layer 6 through the heat exchange pipe 3 through the hot air passage 10, then reaches the orifice of the low-pressure gas output pipe 19 through the local heating area 8 of the vortex chamber, and is discharged through the low-pressure gas output pipe 19, pilot gas is input from the first gas guide input pipe 15 and then enters the heat exchange cavity 11, when the front section of the heat exchange cavity 11 is arranged, the high-pressure fuel gas in the outer heating layer 6 and the cocurrent heat exchange unit 12 can heat the input pilot gas at the same time in the same direction, then the pilot gas is guided to enter the heat exchange cavity 11 provided with the reverse heat exchange unit 20 through the pilot gas internal circulation pipeline 14, at this time, the high-pressure fuel gas in the outer heating layer 6 and the reverse heat exchange unit 20 can heat the input pilot gas at the same time, and the heated pilot gas can be output through the pilot gas output pipe 16, the heat efficiency of the heat exchange unit is improved.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A sectional type vortex tube heater which characterized in that: comprises a shell (1), a heat insulating layer (2), a heat exchange tube (3), a tube body (4) and an adjusting valve (5), the heat insulation layer (2) is arranged in the inner layer of the shell (1), the heat exchange tube (3) is arranged in the shell (1), an outer heating layer (6) is formed between the heat exchange tube (3) and the shell (1), the tube body (4) is arranged at one end of the heat exchange tube (3), a vortex chamber (7) is arranged in the tube body (4), a vortex chamber local heating area (8) is formed between the pipe body (4) and the shell (1), a sealing plate (9) is arranged at one end of the shell (1) far away from the pipe body (4), a hot gas passage (10) is formed between one end of the heat exchange tube (3) close to the sealing plate (9) and the sealing plate (9), the regulating valve (5) is arranged between the sealing plate (9) and the shell (1), and two ends of the regulating valve (5) are respectively connected with the sealing plate (9) and the shell (1);

a heat exchange cavity (11) is arranged in the heat exchange tube (3), a syntropy heat exchange unit (12) is arranged at one end, close to the tube body (4), in the heat exchange cavity (11), one end of the syntropy heat exchange unit (12) extends towards the other end of the heat exchange tube (3), a reverse heat exchange unit (20) is arranged at one end, close to the sealing plate (9), in the heat exchange cavity (11), one end of the reverse heat exchange unit (20) extends towards the end of the syntropy heat exchange unit (12), a groove (13) is formed in the intersection of the syntropy heat exchange unit (12) and the reverse heat exchange unit (20) in the heat exchange tube (3), a baffle (21) is arranged at the intersection of the syntropy heat exchange unit (12) and the reverse heat exchange unit (20) in the heat exchange cavity (11), an air guide internal circulation pipeline (14) is arranged in the groove (13), one end of the air guide internal circulation pipeline (14) penetrates through the baffle (21) and extends to one end provided with the syntropy heat exchange unit (12), a pilot gas input pipe (15) is arranged at one end, close to the pipe body (4), of the heat exchange pipe (3), one end of the pilot gas input pipe (15) extends out of the shell (1), a pilot gas output pipe (16) is arranged at one side of an upper baffle (21) of the heat exchange pipe (3), and one end of the pilot gas output pipe (16) extends out of the shell (1);

high-pressure gas input pipes (17) are symmetrically arranged on the shell (1), one ends of the high-pressure gas input pipes (17) extend into the vortex chamber (7), and pressure reducing nozzles (18) are arranged at the ends of the high-pressure gas input pipes (17) extending into the vortex chamber (7);

and a low-pressure gas output pipe (19) is arranged at one end of the shell (1) provided with the high-pressure gas input pipe (17).