CN215952298U - Double-shunt shell direct-discharging type steam heater - Google Patents
Double-shunt shell direct-discharging type steam heater Download PDFInfo
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- CN215952298U CN215952298U CN202121185346.5U CN202121185346U CN215952298U CN 215952298 U CN215952298 U CN 215952298U CN 202121185346 U CN202121185346 U CN 202121185346U CN 215952298 U CN215952298 U CN 215952298U
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Abstract
A double-shunt shell direct-discharging type steam heater comprises a steam heater body, wherein the steam heater body comprises a shell and a plurality of heat exchange tubes arranged in parallel in the shell, a supercooled water outlet and a steam inlet are formed in two sides of the top of the shell respectively, a condensed water inlet and a condensed water outlet are formed in two sides of the bottom of the shell respectively, at least one gas inlet is formed in one side of the shell, and at least one gas outlet is formed in the other side of the shell; the heat exchange tube is also provided with a plurality of isolation distribution plates, and each isolation distribution plate divides the heat exchange tube into an upper unit and a lower unit which are independent. Compared with the traditional single inlet and outlet steam heater, the utility model has the advantages of higher heat exchange efficiency, simpler and more convenient manufacture and the like, and provides guarantee for the high efficiency, energy conservation and emission reduction of the heater.
Description
Technical Field
The utility model relates to a double-shunt shell direct-discharging type steam heater, and belongs to the technical field of heat exchange equipment.
Background
In the air separation plant, the steam heater heats the waste nitrogen gas to heat and activate the molecular sieve. The performance of the steam heater directly influences whether the molecular sieve adsorber can work normally, so that the normal operation of the whole set of air separation equipment is very important. In recent years, with the increasing of air separation industry gas volume, the gas volume requirement of unit equipment in the process is higher and higher. In order to cope with this situation, the need to develop a single steam heater with a large amount of gas is urgent. The single-channel structure of the single inlet and outlet steam heater which is mainstream in the domestic market at present is mainly used for air quantity below 12 w. The structure has certain influence on the integral structure of the cylinder body due to overlarge inlet because the inlet specification is limited by the cylinder body. Meanwhile, the requirement of the distribution diffusion speed of the air flow is considered, and certain requirement is provided for the ratio (height-depth ratio) of the depth S from the windward side of the heat exchange core to the inner wall of the cylinder body to the height L of the windward side of the core body. The existing structural design is not suitable for the steam heater with the gas amount exceeding 12w and above due to the limitation of the process characteristics and the manufacturing level.
Disclosure of Invention
The utility model researches and develops a new structure aiming at the situation. The problem of heat exchange efficiency reduction caused by uneven diffusion of large-air-volume waste nitrogen is solved by adopting a direct-discharge structure of a double-inlet-outlet shunting shell. Compared with the traditional steam heater with a single inlet and a large connecting pipe, the steam heater has the advantages of improved heat exchange performance, reduced overall cost, saved use site and the like, and provides equipment support for the expansion of the air separation industrial scale.
The utility model aims to overcome the defects in the prior art and provides the double-split-flow shell direct-discharge steam heater which is simple in structure, low in cost and high in heat exchange efficiency. A double-shunt shell direct-discharging type steam heater comprises a steam heater body, wherein the steam heater body comprises a shell and a plurality of heat exchange tubes arranged in parallel in the shell, a supercooled water outlet and a steam inlet are formed in two sides of the top of the shell respectively, a condensed water inlet and a condensed water outlet are formed in two sides of the bottom of the shell respectively, at least one gas inlet is formed in one side of the shell, and at least one gas outlet is formed in the other side of the shell; the heat exchange tube is also provided with a plurality of isolation distribution plates, and each isolation distribution plate divides the heat exchange tube into an upper unit and a lower unit which are independent.
Preferably, the method comprises the following steps: the number of the isolation distribution plates is three, the width of each isolation distribution plate is the same as that of the heat exchange tube, the intervals among the isolation distribution plates are the same and are arranged in parallel, the isolation distribution plates are sequentially an upper isolation distribution plate, an intermediate isolation distribution plate and a lower isolation distribution plate from top to bottom, the number of the gas inlets and the number of the gas outlets are two and are vertically-drooping straight-line arrangement, the vertical height of the upper isolation distribution plate is the same as that of the upper gas inlets and the upper gas outlets, and the vertical height of the lower isolation distribution plate is the same as that of the lower gas inlets and the lower gas outlets; the isolation distribution plate is used for guiding the gas introduced from the gas inlet and the gas discharged from the gas outlet to uniformly flow into the upper unit and the lower unit of the heat exchange tube or flow out of the upper unit and the lower unit of the heat exchange tube, so that the gas flow in the shell is uniformly distributed.
Preferably, the method comprises the following steps: the pipe orifices of the gas inlet and the gas outlet are respectively provided with a flange, the vent of the gas inlet and the gas outlet, which are positioned at the inner side of the shell, is arc-shaped, the vent is evenly provided with a plurality of vent holes, and the vent holes are used for even air flow diffusion.
Preferably, the method comprises the following steps: and a support column is also arranged on the steam heater.
The utility model aims at a steam heater with 13w air volume, adopts a direct-exhaust type structure of a double-inlet-outlet flow-dividing shell, and the design is designed and manufactured for the first time in China. Compared with the traditional structure, the utility model has the advantages of high heat exchange efficiency, simple processing and manufacturing and low production cost.
Drawings
Fig. 1 is a schematic view of a conventional single inlet/outlet steam heater.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic structural view of a gas inlet/outlet in the present invention.
Detailed Description
The utility model will be described in detail below with reference to the following figures: fig. 1-3 show, a two shunting casing direct vent steam heater, including steam heater body 1, steam heater body 1 includes casing 2 and sets up the heat exchange tube 9 of arranging in the inside many parallels of casing 2, the top both sides of casing 2 are provided with subcooled water export 3 and steam inlet 4 respectively, and its bottom both sides are provided with comdenstion water import 5 and comdenstion water export 6 respectively, are provided with at least one gas inlet 7 on one side of this casing 2 side, and the side of opposite side is provided with at least one gas outlet 8 on one's body, still be provided with a plurality of partition plate 10 of keeping apart on the heat exchange tube 9 respectively, two independent units about every partition plate falls into heat exchange tube 9. The utility model adopts a direct-discharge structure of the double-inlet-outlet flow-dividing shell, and the arrangement of the isolation distribution plate ensures that the gas in the shell is uniformly distributed, so that the heat exchange efficiency is high, the processing and the manufacturing are simple and the production cost is reduced compared with the traditional structure.
The number of the isolation distribution plates 10 is three, the width of each isolation distribution plate 10 is the same as that of the heat exchange tube 9, the intervals between the isolation distribution plates 10 are the same and are arranged in parallel, the isolation distribution plates 10 are sequentially an upper isolation distribution plate 11, an intermediate isolation distribution plate 12 and a lower isolation distribution plate 13 from top to bottom, the number of the gas inlets 7 and the number of the gas outlets 8 are two and are vertically-downward straight-arranged, wherein the vertical height of the upper isolation distribution plate 11 is the same as that of the upper gas inlets and the upper gas outlets, and the vertical height of the lower isolation distribution plate 13 is the same as that of the lower gas inlets and the lower gas outlets; the partition plate 10 is used for guiding the gas introduced from the gas inlet 7 and the gas discharged from the gas outlet 8 to uniformly flow into the upper unit and the lower unit of the heat exchange tube 9 or flow out of the upper unit and the lower unit of the heat exchange tube 9, so that the gas flow in the shell 2 is uniformly distributed.
The pipe orifices of the gas inlet 7 and the gas outlet 8 are respectively provided with a flange 14, the vent 16 of the gas inlet 7 and the gas outlet 8 positioned at the inner side of the shell 2 is arc-shaped, the vent 16 is uniformly provided with a plurality of vent holes 17, and the vent 16 and the vent holes 17 are used for uniform air flow diffusion.
The steam heater 1 is also provided with a support column 15.
The utility model adopts a double-inlet-outlet structure to improve the total inlet area of the steam heater, thereby reducing the flow velocity of cold fluid and improving the heat exchange efficiency; and then according to the characteristics of each stage of the steam heat exchange process, the airflow direction is reasonably distributed, and the utilization rate of the steam is improved.
Due to the existence of the isolation distribution plate, the heat exchange unit in the shell is divided into an upper unit and a lower unit. The double-shunt shell direct-discharging type steam heater adopts a structure of double inlet and outlet connecting pipes for shunting the medium, thereby optimizing the diffusion distribution of the medium and improving the heat exchange efficiency. The air separation device has the advantages that the traditional air separation large air volume is realized in a parallel connection mode of double devices, the air separation device has the advantages of being cost-saving, efficient in heat transfer and simple in structure, the utilization rate of the device is effectively improved, and the practicability of the whole device is improved.
The design idea of the utility model is as follows: designing the corresponding heat exchange tube area and heat exchange tube arrangement according to the working conditions of two heat exchange media; determining the length of the heat exchange tube according to the manufacturing process and the thermal calculation requirement, and calculating the windward area; determining the size of a pipe orifice of the double-connection pipe according to the gas quantity and flow velocity distribution of each stage of thermodynamic calculation; and 4, adjusting the flow dividing area of the double inlets according to each heat exchange stage of steam in thermodynamic calculation. Note that: due to the existence of the isolation distribution plate, the core heat exchange unit is divided into an upper unit and a lower unit. And under the conditions of on-site pipe distribution and structural rationality, the center of the pipe connecting port needs to be designed at the central position of the upper unit and the lower unit as much as possible. The design of each cell also needs to take into account the high-depth ratio. The double-shunt shell direct-discharging type steam heater adopts a structure of double inlet and outlet connecting pipes for shunting the medium, thereby optimizing the diffusion distribution of the medium and improving the heat exchange efficiency. The traditional air separation method has the advantages of cost saving, high-efficiency heat transfer and simple structure due to the adoption of a parallel connection mode of double devices. The utilization ratio of more effectual improve equipment improves the practicality of whole equipment.
Claims (4)
1. The utility model provides a two split stream casing direct vent steam heater, includes steam heater body (1), its characterized in that: the steam heater body (1) comprises a shell (2) and a plurality of heat exchange tubes (9) arranged in parallel in the shell (2), wherein a supercooled water outlet (3) and a steam inlet (4) are respectively arranged on two sides of the top of the shell (2), a condensed water inlet (5) and a condensed water outlet (6) are respectively arranged on two sides of the bottom of the shell, at least one gas inlet (7) is arranged on one side body of the shell (2), and at least one gas outlet (8) is arranged on the other side body of the shell; the heat exchange tube (9) is also provided with a plurality of isolation distribution plates (10), and each isolation distribution plate divides the heat exchange tube (9) into an upper unit and a lower unit which are independent.
2. The dual split flow housing in-line steam heater of claim 1, wherein: the number of the isolation distribution plates (10) is three, the width of each isolation distribution plate (10) is the same as that of the heat exchange pipe (9), the intervals among the isolation distribution plates (10) are the same and are arranged in parallel, the isolation distribution plates (10) are sequentially an upper isolation distribution plate (11), an intermediate isolation distribution plate (12) and a lower isolation distribution plate (13) from top to bottom, the number of the gas inlets (7) and the number of the gas outlets (8) are two and are vertically-downward straight-arranged, the vertical height of the upper isolation distribution plate (11) is the same as that of the upper gas inlet and the upper gas outlet, and the vertical height of the lower isolation distribution plate (13) is the same as that of the lower gas inlet and the lower gas outlet; the isolation distribution plate (10) is used for guiding the gas introduced from the gas inlet (7) and the gas discharged from the gas outlet (8) to uniformly flow into the upper unit and the lower unit of the heat exchange tube (9) or flow out of the upper unit and the lower unit of the heat exchange tube (9), so that the gas flow in the shell (2) is uniformly distributed integrally.
3. The dual split flow housing in-line steam heater of claim 1 or 2, wherein: the gas inlet (7) and the gas outlet (8) are respectively provided with a flange (14), the gas inlet (7) and the gas outlet (8) are positioned at the inner side of the shell (2), the ventilation opening (16) is arc-shaped, a plurality of vent holes (17) are uniformly formed in the ventilation opening (16), and the ventilation opening (16) and the vent holes (17) are used for uniform air flow diffusion.
4. The dual split flow housing in-line steam heater of claim 1, wherein: the steam heater is also provided with a support column (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185346.5U CN215952298U (en) | 2021-05-31 | 2021-05-31 | Double-shunt shell direct-discharging type steam heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185346.5U CN215952298U (en) | 2021-05-31 | 2021-05-31 | Double-shunt shell direct-discharging type steam heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215952298U true CN215952298U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121185346.5U Active CN215952298U (en) | 2021-05-31 | 2021-05-31 | Double-shunt shell direct-discharging type steam heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215952298U (en) |
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2021
- 2021-05-31 CN CN202121185346.5U patent/CN215952298U/en active Active
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 310000 No. 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU HANGYANG HEAT EXCHANGE EQUIPMENT Co.,Ltd. Address before: 311305 No. 799, Xiangfu Road, Qingshanhu street, Lin'an City, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU HANGYANG HEAT EXCHANGE EQUIPMENT Co.,Ltd. |