CN111692450A - Double-side efficient vortex tube heater - Google Patents
Double-side efficient vortex tube heater Download PDFInfo
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- CN111692450A CN111692450A CN202010373210.0A CN202010373210A CN111692450A CN 111692450 A CN111692450 A CN 111692450A CN 202010373210 A CN202010373210 A CN 202010373210A CN 111692450 A CN111692450 A CN 111692450A
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- vortex tube
- outer cylinder
- metal outer
- natural gas
- vortex
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000007789 gas Substances 0.000 claims abstract description 71
- 239000003345 natural gas Substances 0.000 claims abstract description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 28
- 230000002265 prevention Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a double-side efficient vortex tube heater, which comprises a metal outer cylinder, wherein a vortex tube is arranged in the metal outer cylinder, one end of the vortex tube is connected with a vortex chamber, the other end of the vortex tube is provided with an opening and an adjusting valve, a heat exchanger is arranged outside the vortex tube, an outer heating layer is arranged between the heat exchanger and the metal outer cylinder, and a vortex chamber local heating area is arranged between the vortex chamber and the metal outer cylinder; the side wall of the metal outer cylinder is provided with a pilot gas inlet, a pilot gas outlet, a low-pressure natural gas outlet and a high-pressure natural gas inlet, and a pressure reducing nozzle is arranged at the position corresponding to the high-pressure natural gas inlet. The regulating device can realize the regulation of the temperature of the pilot gas while improving the heating efficiency of the pilot gas, has the functions of self ice blockage prevention under the common working condition and self ice blockage removal under the extreme working condition, can stably operate for a long time, and ensures the normal work of the natural gas pressure regulating equipment.
Description
Technical Field
The invention relates to natural gas conveying equipment, in particular to a double-side efficient vortex tube heater.
Background
Natural gas typically undergoes a large temperature drop during adiabatic throttling expansion due to the joule-thomson effect. Because the caliber of a pressure guiding pipe (also called a pilot gas conduit) of the natural gas pressure regulating equipment is small, when the temperature of natural gas is lower than the dew point of water, hydrate is likely to be formed in the pressure guiding pipe, and an ice blockage accident occurs, so that the function of the natural gas pressure regulating equipment fails. Therefore, the air is heated before entering the pressure regulating device to ensure the normal operation of the pressure regulating device.
The conventional methods for improving the temperature of the pilot gas mainly comprise two types, one type is a heating method requiring external energy sources, and the method mainly comprises the following steps: electric tracing, local heating by a commander, and heat exchanger. The electric tracing band is wound on the pressure leading tube, and the heat generated by electric energy is used for heating the pipeline, so that the temperature of the air guide in the pipeline is increased. When the environmental temperature is lower, the method has the advantages of higher energy consumption, poor heating effect, frequent maintenance and certain potential safety hazard. The local heating method of the commander is to directly install a heater on the commander of the natural gas pressure regulating equipment, and the method is only suitable for the commander type pressure regulating equipment in medium and small pressure regulating stations, and the heating effect is greatly influenced by the front-back pressure difference of the pressure regulator due to local heating. The heat exchanger method uses circulating hot water as a heat source to heat the pilot gas, and the method has the problems of complex equipment, high investment and operation cost, need of specially-assigned persons for watching and the like.
The other is a vortex tube heating method without external energy source, namely the energy separation effect generated by the pressure difference of natural gas is utilized to heat the pilot gas. Vortex tube heaters are typically made up of a vortex tube, a heat exchanger, a pressure reducing nozzle, a heat insulation layer and a metal housing. And connecting the natural gas pipeline and the pressure guiding pipe with the vortex tube heater. Under the action of pressure difference, natural gas generates high-speed rotational flow through the vortex tube, outer-layer gas is converted into high-temperature hot gas, and the pilot gas exchanges heat with the high-temperature hot gas through the heat exchanger to increase the temperature. Vortex tube heaters have the advantage of not requiring external energy and operating costs. At present, two products, namely VPGH-SP and VPGH-DP, produced by UVI of America are mostly applied, a heat exchanger of the VPGH-SP and VPGH-DP only heats pilot gas from inside to outside on one side, and the VPGH-SP and VPGH-DP heat exchanger does not have an adjusting device, so that the heat exchange efficiency cannot be adjusted conveniently when the working condition changes. Meanwhile, the vortex tube heater has the risk of ice blockage due to the existence of the pressure reducing nozzle, although hot gas is led out from the VPGH-SP and the VPGH-DP to prevent the pressure reducing nozzle from ice blockage, when the front-back pressure ratio of the pressure regulator is small and the temperature of natural gas is low, the temperature of the hot gas is not high, the vortex tube heater still has the possibility of ice blockage, and blockage removal is difficult due to the absence of the regulating device. More generally, the vortex tube heater all adopts steam and guide's gas unilateral heat transfer, and heat exchange efficiency is not high, when natural gas temperature, pressure and ambient temperature descend, can't guarantee sufficient heat exchange efficiency, leads to the heating effect to guide's gas not good, influences natural gas pressure regulating equipment's normal work.
Disclosure of Invention
The invention aims to provide a double-side efficient vortex tube heater for heating and adjusting the temperature of pilot gas of natural gas pressure regulating equipment by using a vortex tube energy separation principle.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a double-side efficient vortex tube heater, which comprises a metal outer cylinder, wherein a vortex tube is arranged in the metal outer cylinder, one end of the vortex tube is connected with a vortex chamber, the other end of the vortex tube is provided with an opening and an adjusting valve, a heat exchanger is arranged outside the vortex tube, an outer heating layer is arranged between the heat exchanger and the metal outer cylinder, and a vortex chamber local heating area is arranged between the vortex chamber and the metal outer cylinder;
the side wall of the metal outer cylinder is provided with a pilot gas inlet and a pilot gas outlet at the parts corresponding to the vortex tube, and the pilot gas inlet and the pilot gas outlet are respectively connected with the heat exchanger;
the side wall of the metal outer cylinder is provided with one or more high-pressure natural gas inlets at the position corresponding to the vortex chamber, the end wall of the metal outer cylinder is provided with a low-pressure natural gas outlet at the position corresponding to the center of the vortex chamber, and the vortex chamber is provided with openings at the positions corresponding to the high-pressure natural gas inlet and the low-pressure natural gas outlet respectively.
According to the technical scheme provided by the invention, the bilateral high-efficiency vortex tube heater provided by the embodiment of the invention can realize the regulation of the pilot gas temperature while improving the heating efficiency of the pilot gas, and meanwhile, the bilateral high-efficiency vortex tube heater has the functions of self ice blockage prevention under the common working condition and self ice blockage removal under the extreme working condition, can stably run for a long time, and ensures the normal work of natural gas pressure regulating equipment. The pressure regulating device is mainly used for natural gas and gas pipeline pressure regulating equipment, and belongs to a device with heating, blockage removing and temperature regulating functions.
Drawings
Fig. 1 is a schematic structural diagram of a double-sided high-efficiency vortex tube heater according to an embodiment of the present invention.
In the figure:
1-a pressure reducing nozzle; 2-a swirl chamber; 3-vortex tube; 4-a heat exchanger; 5, adjusting a valve; 6-hot gas path; 7-an outer heating layer; 8-local heating zone of vortex chamber; 9-insulating layer; 10-metal outer cylinder (including high-pressure natural gas inlet, low-pressure natural gas outlet and pilot gas inlet and outlet); A. b, a high-pressure natural gas inlet; c, a pilot gas inlet; d, a pilot gas outlet; e, a low-pressure natural gas outlet.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses a double-side efficient vortex tube heater, which has the following preferred embodiments:
the vortex tube comprises a metal outer cylinder, wherein a vortex tube is arranged in the metal outer cylinder, one end of the vortex tube is connected with a vortex chamber, the other end of the vortex tube is provided with an opening and an adjusting valve, a heat exchanger is arranged outside the vortex tube, an outer heating layer is arranged between the heat exchanger and the metal outer cylinder, and a vortex chamber local heating area is arranged between the vortex chamber and the metal outer cylinder;
the side wall of the metal outer cylinder is provided with a pilot gas inlet and a pilot gas outlet at the parts corresponding to the vortex tube, and the pilot gas inlet and the pilot gas outlet are respectively connected with the heat exchanger;
the side wall of the metal outer cylinder is provided with one or more high-pressure natural gas inlets at the position corresponding to the vortex chamber, the end wall of the metal outer cylinder is provided with a low-pressure natural gas outlet at the position corresponding to the center of the vortex chamber, and the vortex chamber is provided with openings at the positions corresponding to the high-pressure natural gas inlet and the low-pressure natural gas outlet respectively.
And a decompression nozzle is arranged at the opening part of the vortex chamber corresponding to the high-pressure natural gas inlet.
The metal outer cylinder is provided with a heat insulation layer.
The bilateral high-efficiency vortex tube heater can realize the regulation of the pilot gas temperature while improving the heating efficiency of the pilot gas, has the functions of self ice blockage prevention under the general working condition and self ice blockage removal under the extreme working condition, can stably run for a long time, and ensures the normal work of natural gas pressure regulating equipment.
The principle of the invention is as follows:
a hot gas channel is formed between the heat exchanger and the regulating valve, an outer heating layer is formed between the heat preservation layer and the heat exchanger, a local heating area of the vortex chamber is formed between the vortex chamber and the heat preservation layer, and the outer layer of the heat preservation layer is a metal outer cylinder. And a high-pressure natural gas inlet, a low-pressure natural gas outlet, a pilot gas inlet and a pilot gas outlet are arranged on the metal outer cylinder, and a closed working unit is formed after the corresponding gas inlet and outlet are communicated with the vortex tube heater. When the regulating valve is opened, hot air enters the outer heating layer through the hot air channel, so that the pilot air is heated at the inner side and the outer side simultaneously, and the heating efficiency is improved. When the opening of the adjusting valve is adjusted, the control of the pilot gas temperature can be realized. Hot gas continuously flows through a local heating area of the vortex chamber, so that the function of preventing the nozzle from being blocked by ice is realized; under extreme working conditions, when the pressure reducing nozzle is blocked by ice, the inlet and outlet valves and the regulating valve which guide air firstly can be temporarily closed, after the temperature of hot air in the vortex tube rises, the regulating valve is opened, so that the hot air reduces heat loss as much as possible and flows to a local heating area to heat the pressure reducing nozzle, and the blockage removing function is realized.
The invention has the advantages that:
(1) the regulating valve is arranged, so that when the working condition is greatly changed, the temperature of the pilot gas can be changed through the regulating valve. (2) The heat exchanger is additionally provided with the outer heating layer, so that the inner side and the outer side of the pilot gas can be heated simultaneously, and the heating efficiency of the pilot gas is improved. (3) The local heating area of the vortex chamber is arranged, so that the function of preventing the pressure reducing nozzle from being blocked by ice can be realized under the ordinary condition; under extreme conditions, if the pressure reducing nozzle is blocked by ice, the blockage can be removed by being matched with the adjustment of the adjusting valve. (4) The device has high heating efficiency and stable performance, can adapt to the working condition change in a wider range, and is still suitable for a small amount of natural gas containing water, sulfur and the like.
The specific embodiment is as follows:
as shown in fig. 1, the present invention provides a double-sided high-efficiency vortex tube heater, comprising: 1-a pressure reducing nozzle; 2-a swirl chamber; 3-vortex tube; 4-a heat exchanger; 5, adjusting a valve; 6-hot gas path; 7-an outer heating layer; 8-local heating zone of vortex chamber; 9-insulating layer; 10-metal outer cylinder (including high-pressure natural gas inlet, low-pressure natural gas outlet and pilot gas inlet and outlet); A. b, a high-pressure natural gas inlet; c, a pilot gas inlet; d, a pilot gas outlet; e, a low-pressure natural gas outlet.
The heating function of the invention:
high-pressure natural gas enters from a high-pressure natural gas inlet A, B and reaches the vortex tube 3 through the decompression nozzle 1 and the vortex chamber 2, the gas in the vortex tube 3 is divided into outer-layer hot vortex flow and inner-layer cold vortex flow, cold air is discharged from a low-pressure natural gas outlet E, the inner side of the heat exchanger 4 is heated by the outer-layer hot gas, meanwhile, the hot gas reaches an outer heating layer 7 through a hot gas channel 6 to heat the outer side of the heat exchanger 4, pilot gas enters the heat exchanger 4 from a first gas guide inlet C and flows in a spiral channel in the heat exchanger 4, the contact area and the circulation time are increased, the inner side and the outer side of the heat exchanger 4 are heated simultaneously, and then the pilot gas is discharged from a pilot gas outlet D, so that the heating.
The self anti-icing and anti-blocking function of the invention is as follows:
hot gas in the vortex tube 3 reaches a vortex chamber local heating area 8 after passing through a hot gas channel 6 and an outer heating layer 7, heats the pressure reducing nozzle 1, prevents the pressure reducing nozzle 1 in the vortex chamber 2 from being blocked due to ice caused by too low temperature, and realizes the self ice blocking prevention function.
The self-unblocking function of the invention is as follows:
when the temperature of natural gas and the ambient temperature are extremely low and the pressure difference or the pressure ratio between the front and the back of a pressure regulator is extremely small, the possibility of ice blockage of equipment theoretically exists. If the abnormal reduction of the air guide temperature is found, which indicates that partial hydrates are generated in the vortex chamber, the valves on the air guide inlet and outlet pipelines are temporarily closed, the regulating valve 5 is closed to close the hot gas channel 6, the temperature of the hot gas in the vortex tube 3 is gradually increased, then the regulating valve 5 is opened to enable the hot gas to reach the local heating area 8 of the vortex chamber, the pressure reducing nozzle 1 is heated, and the self-blockage removing function is realized.
The regulating function of the invention is as follows:
when the temperature of the natural gas, the ambient temperature and the pressure difference between the front and the back of the pressure regulator are greatly changed, if the temperature of the pilot gas cannot meet the requirement, the opening degree of the regulating valve 5 can be increased, the hot gas channel 6 is enlarged, more hot gas flows pass through the outer heating layer 7, the pilot gas in the heat exchanger 4 is heated, the target temperature of the pilot gas is reached, and the regulating function is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A double-side efficient vortex tube heater is characterized by comprising a metal outer cylinder, wherein a vortex tube is arranged in the metal outer cylinder, one end of the vortex tube is connected with a vortex chamber, the other end of the vortex tube is provided with an opening and an adjusting valve, a heat exchanger is arranged outside the vortex tube, an outer heating layer is arranged between the heat exchanger and the metal outer cylinder, and a vortex chamber local heating area is arranged between the vortex chamber and the metal outer cylinder;
the side wall of the metal outer cylinder is provided with a pilot gas inlet and a pilot gas outlet at the parts corresponding to the vortex tube, and the pilot gas inlet and the pilot gas outlet are respectively connected with the heat exchanger;
the side wall of the metal outer cylinder is provided with one or more high-pressure natural gas inlets at the position corresponding to the vortex chamber, the end wall of the metal outer cylinder is provided with a low-pressure natural gas outlet at the position corresponding to the center of the vortex chamber, and the vortex chamber is provided with openings at the positions corresponding to the high-pressure natural gas inlet and the low-pressure natural gas outlet respectively.
2. The double-sided high efficiency vortex tube heater of claim 1 wherein the vortex chamber is provided with a pressure reducing nozzle at an opening portion corresponding to the high pressure natural gas inlet.
3. The double-sided high efficiency vortex tube heater of claim 2 in which the pilot gas channel in the heat exchanger is a spiral channel.
4. The double-sided high efficiency vortex tube heater of claim 1, 2 or 3, wherein the metal outer cylinder is provided with an insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373210.0A CN111692450A (en) | 2020-05-06 | 2020-05-06 | Double-side efficient vortex tube heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373210.0A CN111692450A (en) | 2020-05-06 | 2020-05-06 | Double-side efficient vortex tube heater |
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| Publication Number | Publication Date |
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| CN111692450A true CN111692450A (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010373210.0A Pending CN111692450A (en) | 2020-05-06 | 2020-05-06 | Double-side efficient vortex tube heater |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911740A (en) * | 1997-11-21 | 1999-06-15 | Universal Vortex, Inc. | Method of heat transfer enhancement in a vortex tube |
| CN102563351A (en) * | 2012-02-24 | 2012-07-11 | 深圳市力科气动科技有限公司 | Gas depressurizing heating device and gas depressurizing heating method |
| CN204300700U (en) * | 2014-12-05 | 2015-04-29 | 高拓石油天然气技术（上海）有限责任公司 | With the control pressurer system of vortex heater |
| US20170167989A1 (en) * | 2015-12-15 | 2017-06-15 | Thermo Gamma-Metrics Pty Ltd | Thermal control apparatus |
| CN107806568A (en) * | 2017-11-24 | 2018-03-16 | 乐山川天燃气输配设备有限公司 | Vortex hot type pressure regulator |
| CN212407941U (en) * | 2020-05-06 | 2021-01-26 | 北京石油化工学院 | Double-side efficient vortex tube heater |
-
2020
- 2020-05-06 CN CN202010373210.0A patent/CN111692450A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911740A (en) * | 1997-11-21 | 1999-06-15 | Universal Vortex, Inc. | Method of heat transfer enhancement in a vortex tube |
| CN102563351A (en) * | 2012-02-24 | 2012-07-11 | 深圳市力科气动科技有限公司 | Gas depressurizing heating device and gas depressurizing heating method |
| CN204300700U (en) * | 2014-12-05 | 2015-04-29 | 高拓石油天然气技术（上海）有限责任公司 | With the control pressurer system of vortex heater |
| US20170167989A1 (en) * | 2015-12-15 | 2017-06-15 | Thermo Gamma-Metrics Pty Ltd | Thermal control apparatus |
| CN107806568A (en) * | 2017-11-24 | 2018-03-16 | 乐山川天燃气输配设备有限公司 | Vortex hot type pressure regulator |
| CN212407941U (en) * | 2020-05-06 | 2021-01-26 | 北京石油化工学院 | Double-side efficient vortex tube heater |
Non-Patent Citations (1)
| Title |
|---|
| 熊长征;陈川;尹克江;冯磊;王铁生;菅秀洋;: "涡流管加热技术在天然气工业中的应用", 油气储运, no. 06, 25 June 2009 (2009-06-25), pages 78 - 81 * |
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