CN212339687U - Combined type extruded part guide cylinder - Google Patents
Combined type extruded part guide cylinder Download PDFInfo
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- CN212339687U CN212339687U CN202021203498.9U CN202021203498U CN212339687U CN 212339687 U CN212339687 U CN 212339687U CN 202021203498 U CN202021203498 U CN 202021203498U CN 212339687 U CN212339687 U CN 212339687U
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Abstract
The utility model discloses a combined type extrusion molding piece guide cylinder which is arranged in an outer cylinder of a dry-type evaporator and comprises a horizontal clapboard, an upper guide cylinder and a lower guide cylinder which are respectively arranged on the upper side and the lower side of the horizontal clapboard; a plurality of upper guide cylinder inner cavities are arranged in the upper guide cylinder, the adjacent upper guide cylinder inner cavities are separated by upper guide cylinder inner partition plates, and upper guide cylinder outer partition plates are arranged outside the upper guide cylinder; a plurality of lower guide cylinder inner cavities are arranged in the lower guide cylinder, the adjacent lower guide cylinder inner cavities are separated by lower guide cylinder inner partition plates, and lower guide cylinder outer partition plates are arranged outside the lower guide cylinder; the heat exchange tube bundle of the dry evaporator is positioned in the inner cavity of the upper guide shell and the inner cavity of the lower guide shell. The device uses plastic as raw material, adopts extrusion molding process for processing, has low cost, can effectively improve the cost performance of the pure countercurrent dry evaporator for refrigeration, and can well improve the flow rate of shell pass secondary refrigerant, thereby increasing the heat transfer coefficient of the shell pass and providing conditions for developing a high-efficiency dry evaporator.
Description
Technical Field
The utility model relates to a refrigeration plant technical field especially relates to a refrigeration is with combination formula extrusion of pure adverse current dry-type evaporator draft tube.
Background
The evaporator is a core heat exchange device in a refrigeration/heat pump device, and can be divided into a water (liquid) cooling evaporator and an air cooling evaporator according to different types of cooled media. Depending on the liquid supply method, the evaporator may be classified into a dry type evaporator, a flooded type evaporator, a falling film type evaporator, and the like.
The traditional dry evaporator for refrigeration is mainly a baffle plate shell-and-tube heat exchanger, and a refrigerant flows in a heat exchange tube after passing through a tube pass; the secondary refrigerant flows through the shell pass and flows outside the heat exchange tube. Due to the existence of the baffle plate, the flow resistance of the shell pass is large, a low flow velocity area and a flow dead area are easy to form, the heat exchange coefficient is low, scaling is easy to occur, and the cleaning is not easy to occur. Meanwhile, the flow velocity of the refrigerant in the tube pass cannot be too high, otherwise, the vibration of the heat exchange tube bundle is easily caused, and the safety problem is caused, so that the service life of the heat exchanger is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the deficiencies of the prior art and providing a combined type extruded piece guide cylinder.
The utility model discloses a realize through following technical scheme: a combined type extruded part guide cylinder is arranged in an outer cylinder of a dry-type evaporator and comprises an upper guide cylinder, a lower guide cylinder and a horizontal partition plate, wherein the upper guide cylinder and the lower guide cylinder are respectively arranged on the upper side surface and the lower side surface of the horizontal partition plate; a plurality of upper guide cylinder inner cavities are arranged in the upper guide cylinder, adjacent upper guide cylinder inner cavities are separated by upper guide cylinder inner partition plates, and upper guide cylinder outer partition plates are arranged outside the upper guide cylinder; a plurality of lower guide cylinder inner cavities are arranged in the lower guide cylinder, adjacent lower guide cylinder inner cavities are separated by lower guide cylinder inner partition plates, and lower guide cylinder outer partition plates are arranged outside the lower guide cylinder; one section of the heat exchange tube bundle of the dry-type evaporator is positioned in the inner cavity of the upper guide cylinder, and the other section of the heat exchange tube bundle bypasses the tail end of the guide cylinder and is installed in the inner cavity of the lower guide cylinder.
The secondary refrigerant flows in the inner cavity of the upper guide cylinder, the inner cavity of the lower guide cylinder and the outer cylinder, and the refrigerant flows in the heat exchange tube bundle; the horizontal partition plate divides the shell pass in which the secondary refrigerant flows into an upper shell pass and a lower shell pass, so that pure countercurrent heat exchange between the secondary refrigerant in the two shell passes and the refrigerant in the upper tube pass and the lower tube pass is realized, the heat exchange temperature difference is increased, and the heat exchange efficiency is improved; the arrangement of the upper guide cylinder inner partition plate and the lower guide cylinder inner partition plate plays a role in keeping certain structural strength.
The length of the upper guide cylinder and the length of the lower guide cylinder are shorter than the length of the horizontal partition plate along the axial direction of the guide cylinder, and the part of the horizontal partition plate, which exceeds the upper guide cylinder and the lower guide cylinder, is connected and sealed with a tube plate groove of the dry-type evaporator; the other end of the horizontal partition plate is flush with the upper guide cylinder and the lower guide cylinder, and a distance for the heat exchange tube bundle of the dry-type evaporator to bypass is reserved between the other end of the horizontal partition plate and the tube plate at the other end of the dry-type evaporator. The horizontal partition plate has the main function that two shell passes can be formed by the shell passes to partition the upper shell pass from the lower shell pass, and a steering flow channel of the upper shell pass and the lower shell pass is formed by the reserved distance between the other end of the horizontal partition plate and the tube plate at the other end of the dry evaporator so as to ensure a two-shell pass structure.
The inner wall of the inner cavity of the upper guide cylinder is in a wave line shape, and two vertex angles at the top end of the upper guide cylinder are in an arc shape and are consistent with the shape of the inner circle of the outer cylinder; the outer end of the horizontal partition plate is arc-shaped and is consistent with the shape of the inner circle of the outer cylinder; the inner wall of the inner cavity of the lower guide shell is in a wave line shape, and two bottom angles at the bottom end of the lower guide shell are in arc shapes and are consistent with the shape of the inner circle of the outer cylinder. The inner walls of the inner cavity of the upper guide cylinder and the inner cavity of the lower guide cylinder are both in a wave line shape, and the clearance between the inner wall of the inner cavity of the guide cylinder and the outer circle of the heat exchange tube bundle of the dry-type evaporator is very small, so that the distance between the inner wall of the inner cavity of the guide cylinder and the heat exchange tube bundle is as small as possible, the effective area of the shell pass of the dry-type evaporator is reduced, and the effect; the two top corners of the top arc of the upper guide cylinder and the two bottom corners of the bottom arc of the lower guide cylinder are consistent with the shape of the inner circle of the outer cylinder, and a small gap is formed between the two corners, so that the guide cylinder can be transversely fixed to prevent the guide cylinder from rotating in the outer cylinder.
A first outer cavity, a second outer cavity and a third outer cavity are formed between the outer surface of the upper guide shell and the upper part of the outer shell, the first outer cavity and the third outer cavity are positioned on two sides of the upper guide shell, and the second outer cavity is positioned at the top of the upper guide shell; a fourth outer cavity, a fifth outer cavity and a sixth outer cavity are formed between the outer surface of the lower guide shell and the upper part of the outer shell, the fourth outer cavity and the sixth outer cavity are positioned on two sides of the lower guide shell, and the fifth outer cavity is positioned at the bottom of the lower guide shell; and the inner cavity of the upper guide cylinder, the inner cavity of the lower guide cylinder, the first outer cavity, the second outer cavity, the third outer cavity, the fourth outer cavity, the fifth outer cavity and the sixth outer cavity are filled with full-load refrigerant. The arrangement of six outer cavities can save materials; the inner cavity and the six outer cavities of the guide cylinder are filled with full-load refrigerants and can be parallel to the pressure between the inner cavity and the outer cavities; the secondary refrigerants of the six outer cavities do not exchange heat with the heat exchange tube bundle, the flow velocity is very low, and the secondary refrigerants mainly aim at preventing the inner wall of the outer barrel from being rusted; the secondary refrigerant in the inner cavity of the guide shell flows at a high speed in a gap between the inner cavity and the outer wall of the heat exchange tube bundle and exchanges heat with the refrigerant of the heat exchange tube bundle.
The guide shell is formed by splicing an upper guide shell, a lower guide shell and a horizontal clapboard through clamping grooves. The clamping grooves are spliced, so that the three parts can be firmly combined.
The horizontal partition plate and the upper guide cylinder are manufactured into a whole, or the horizontal partition plate and the lower guide cylinder are manufactured into a whole. The horizontal partition plate and one of the guide cylinders are made into a whole, so that the assembly process can be simplified, and the firmness is better.
The upper guide cylinder is made of a plastic material; the horizontal partition plate is made of a plastic material; the lower guide cylinder is made of plastic materials. The guide cylinder and the horizontal partition plate are made of plastic materials, so that the manufacturing cost can be reduced.
The combined type extruded part guide cylinder is made by adopting an extrusion molding processing technology. The guide cylinder manufactured by extrusion molding has simple and convenient manufacturing process and can ensure the sealing property.
The inner cavity of the upper guide shell is not consistent with the inner cavity of the lower guide shell in shape and size. The shape and size of the inner cavity of the upper guide cylinder and the inner cavity of the lower guide cylinder are mainly designed to be matched with the tube pass of the dry-type evaporator, so that the effective intercepting areas of the upper and lower tube passes formed by the tube pass are as small as possible, the flow velocity of the shell pass secondary refrigerant is improved, the shell pass convective heat transfer coefficient is improved, and conditions are created for improving the total heat transfer coefficient of the heat exchanger.
The area of the cross section of the inner cavity of the upper guide shell is larger than that of the cross section of the inner cavity of the lower guide shell.
Compared with the prior art, the utility model has the advantages of: the device adopts plastics as manufacturing materials, and has the advantage of low cost of raw materials; by adopting the extrusion molding process, the die development cost of the guide cylinder is low, and the manufacturing and production cost of the guide cylinder is low; the guide shell can well improve the flow velocity of shell pass secondary refrigerant, thereby increasing the heat transfer coefficient of the shell pass and providing conditions for developing a high-efficiency dry evaporator.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention in use in a dry evaporator;
fig. 2 is a schematic cross-sectional view of a draft tube according to an embodiment of the present invention;
FIG. 3 is a perspective view of the draft tube according to the embodiment of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
The reference numerals in the drawings mean: 1. an upper draft tube; 2. a second heat exchange tube bundle; 3. an outer cylinder; 4. a lower draft tube; 5. a first heat exchange tube bundle; 6. a horizontal partition plate; 7. a card slot; 101. an upper draft tube outer baffle; 102. an inner baffle plate of the upper guide cylinder; 103. an inner cavity of the first upper guide cylinder; 104. the inner cavity of the second upper guide cylinder; 105. the inner cavity of the third upper guide cylinder; 106. an inner cavity of the fourth upper guide cylinder; 301. a first outer chamber; 302. a second outer chamber; 303. a third outer chamber; 304. a fourth outer cavity; 305. a fifth outer cavity; 306. A sixth outer chamber; 401. an outer baffle plate of the lower guide shell; 402. an inner baffle plate of the lower guide cylinder; 403. an inner cavity of the first lower guide cylinder; 404. the inner cavity of the second lower guide cylinder; 405. an inner cavity of the third lower guide cylinder; 406. The inner cavity of the fourth lower guide cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
Referring to fig. 1 to 4, a combined type flow guide cylinder for an extrusion molding element is installed in an outer cylinder 3 of a dry evaporator, and includes an upper flow guide cylinder 1, a lower flow guide cylinder 4 and a horizontal partition plate 6, wherein the upper flow guide cylinder 1 and the lower flow guide cylinder 4 are respectively arranged on the upper and lower side surfaces of the horizontal partition plate 6; a plurality of inner cavities of the upper guide shell 1 are arranged in the upper guide shell 1, the inner cavities of the adjacent upper guide shells 1 are separated by an inner partition plate 102 of the upper guide shell, and an outer partition plate 101 of the upper guide shell is arranged outside the upper guide shell 1; a plurality of inner cavities of the lower guide shell 4 are arranged in the lower guide shell 4, the inner cavities of the adjacent lower guide shells 4 are separated by a lower guide shell inner partition plate 402, and a lower guide shell outer partition plate 401 is arranged outside the lower guide shell 4; one section of the heat exchange tube bundle of the dry evaporator is positioned in the inner cavity of the upper guide shell 1, and the other section of the heat exchange tube bundle bypasses the tail end of the guide shell and is installed in the inner cavity of the lower guide shell 4.
The secondary refrigerant flows in the inner cavity of the upper guide shell 1, the inner cavity of the lower guide shell 4 and the outer shell 3, and the refrigerant flows in the heat exchange tube bundle; the horizontal partition plate 6 divides the shell pass in which the secondary refrigerant flows into an upper shell pass and a lower shell pass, so that pure countercurrent heat exchange between the secondary refrigerant in the two shell passes and the refrigerant in the upper tube pass and the lower tube pass is realized, the heat exchange temperature difference is increased, and the heat exchange efficiency is improved; the arrangement of the upper guide cylinder inner partition plate 102 and the lower guide cylinder inner partition plate 402 plays a role in keeping certain structural strength.
Along the axial direction of the guide shell, the length of the upper guide shell 1 and the length of the lower guide shell 4 are shorter than the length of the horizontal partition plate 6, and the length parts of the horizontal partition plate 6, which exceed the upper guide shell 1 and the lower guide shell 4, are connected and sealed with a tube plate groove of the dry evaporator; the other end of the horizontal clapboard 6 is flush with the upper guide shell 1 and the lower guide shell 4, and a distance for the heat exchange tube bundle of the dry evaporator to bypass is reserved between the other end of the horizontal clapboard and the tube plate of the dry evaporator. The horizontal partition plate 6 is mainly used for forming two shell passes through the shell pass and separating the upper shell pass from the lower shell pass, and a turning flow channel of the upper shell pass and the lower shell pass is formed by the reserved distance between the other end of the horizontal partition plate 6 and a tube plate at the other end of the dry evaporator so as to ensure a structure of the two shell passes; the part of the horizontal partition plate 6, which exceeds the length of the guide shell, is connected with and sealed with the groove of the tube plate so as to prevent the short circuit or leakage of fluid between the upper shell pass and the lower shell pass of the dry evaporator.
The inner wall of the inner cavity of the upper guide shell 1 is in a wave line shape, and two vertex angles at the top end of the upper guide shell 1 are in an arc shape and are consistent with the shape of the inner circle of the outer cylinder 3; the outer end of the horizontal clapboard 6 is arc-shaped and is consistent with the shape of the inner circle of the outer cylinder 3; the inner wall of the inner cavity of the lower guide shell 4 is in a wave line shape, and two bottom angles at the bottom end of the lower guide shell 4 are in a circular arc shape and are consistent with the shape of the inner circle of the outer cylinder 3. The inner walls of the inner cavity of the upper guide cylinder 1 and the inner cavity of the lower guide cylinder 4 are all wave line shapes, and the clearance between the inner walls of the inner cavities of the guide cylinders and the excircle of the heat exchange tube bundle of the dry-type evaporator is very small, so that the distance between the inner walls of the inner cavities of the guide cylinders and the heat exchange tube bundle is as small as possible, the effective area of the shell pass of the dry-type evaporator is reduced, and the effect of improving the; the two arc-shaped top corners at the top end of the upper guide cylinder 1 and the two arc-shaped bottom corners at the bottom end of the lower guide cylinder 4 are consistent with the inner circle of the outer cylinder 3, and a small gap is formed between the two corners, so that the guide cylinder can be transversely fixed to prevent the guide cylinder from rotating in the outer cylinder 3; the outer end of the horizontal clapboard 6 is in a circular arc shape consistent with the shape of the inner circle of the outer cylinder 3, so that a small interval is formed between the horizontal clapboard 6 and the outer cylinder 3; the horizontal partition plates 6 serve to prevent mixing and short-circuit flow of the refrigerants in the upper and lower shell sides.
A first outer cavity 301, a second outer cavity 302 and a third outer cavity 303 are formed between the outer surface of the upper guide shell 1 and the upper part of the outer shell 3, the first outer cavity 301 and the third outer cavity 303 are positioned at two sides of the upper guide shell 1, and the second outer cavity 302 is positioned at the top of the upper guide shell 1; a fourth outer cavity 304, a fifth outer cavity 305 and a sixth outer cavity 306 are formed between the outer surface of the lower guide shell 4 and the upper part of the outer shell 3, the fourth outer cavity 304 and the sixth outer cavity 306 are positioned at two sides of the lower guide shell 4, and the fifth outer cavity 305 is positioned at the bottom of the lower guide shell 4; the inner cavity of the upper guide shell 1, the inner cavity of the lower guide shell 4, the first outer cavity 301, the second outer cavity 302, the third outer cavity 303, the fourth outer cavity 304, the fifth outer cavity 305 and the sixth outer cavity 306 are filled with full refrigerant. The arrangement of six outer cavities can save materials; the inner cavity and the six outer cavities of the guide cylinder are filled with full-load refrigerants and can be parallel to the pressure between the inner cavity and the outer cavities; the secondary refrigerants of the six outer cavities do not exchange heat with the heat exchange tube bundle, the flow velocity is very low, and the secondary refrigerants mainly aim at preventing the inner wall of the outer barrel 3 from being rusted; the secondary refrigerant in the inner cavity of the guide shell flows at a high speed in a gap between the inner cavity and the outer wall of the heat exchange tube bundle and exchanges heat with the refrigerant of the heat exchange tube bundle.
The guide shell is formed by splicing an upper guide shell 1, a lower guide shell 4 and a horizontal clapboard 6 through a clamping groove 7. The clamping grooves 7 are spliced, so that the three parts can be firmly combined.
The horizontal clapboard 6 and the upper guide shell 1 are manufactured into a whole, or the horizontal clapboard 6 and the lower guide shell 4 are manufactured into a whole. The horizontal partition plate 6 and one of the guide cylinders are made into a whole, so that the assembly process can be simplified, and the firmness is better.
The upper guide cylinder 1 is made of plastic materials; the horizontal clapboard 6 is made of plastic materials; the lower guide shell 4 is made of plastic. The guide cylinder and the horizontal clapboard 6 are made of plastic materials, so that the manufacturing cost can be reduced.
The combined type extruded part guide cylinder is made by adopting an extrusion molding processing technology. The guide cylinder manufactured by extrusion molding has simple and convenient manufacturing process and can ensure the sealing property. The extrusion molding process is a plastic molding process and is one of the important methods for thermoplastic molding. The definition of extrusion molding is that plastic raw materials are heated to be in a viscous flow state, and under the action of pressurization, the plastic raw materials pass through an extrusion molding die to be a continuous body with a cross section similar to the shape of a die, and then the plastic raw materials are cooled and shaped into a glass state, and plastic products with certain geometric shapes and sizes are obtained after cutting. For example, extrusion is a process in which a material is heated and pressurized in an extruder to be in a molten and fluid state, and then continuously extruded from a die to be molded. The method can be used for preparing pipes, tubes, rods, films, sheets, profiles, wires and the like.
The shape and the size of the inner cavity of the upper guide shell 1 are different from those of the inner cavity of the lower guide shell 4. The shape and size of the inner cavity of the upper guide shell 1 and the inner cavity of the lower guide shell 4 are mainly designed to be matched with the tube side of the dry-type evaporator, so that the effective intercepting areas of the upper shell and the lower shell formed by the tube side are as small as possible, the flow velocity of the shell-side coolant is improved, the shell-side convective heat transfer coefficient is improved, and conditions are created for improving the total heat transfer coefficient of the heat exchanger.
The area of the cross section of the inner cavity of the upper guide shell 1 is larger than that of the cross section of the inner cavity of the lower guide shell 4.
In this embodiment, the outer wall of draft tube, horizontal baffle 6 all keep certain thickness, play and keep certain structural strength effect. The embodiment is used as an important component of the dry-type evaporator, and mainly has the main functions of reducing the effective interception area of the shell pass and improving the flow velocity of shell pass secondary refrigerant, so that the convection heat transfer coefficient of the shell pass of the pure countercurrent dry-type evaporator for refrigeration is improved, and the total heat transfer coefficient of the dry-type evaporator is further improved.
In this example, the cross-section of the shell-side flow channel varies periodically along the longitudinal direction of the tube bundle, causing strong disturbances in the shell-side flow that are primarily characterized by rotation and periodic separation and mixing of the streams. The shell pass has no baffle plate, no flow dead zone exists, the flow resistance of the shell pass is small, and meanwhile, the scale is not easy to form. The heat exchange tubes are in point contact with each other, and the shell side fluid mainly flows longitudinally, so that the induced vibration can be well overcome, and the operation reliability of the heat exchange tubes is improved.
Referring to fig. 1 and 2, in the heat exchange tube bundle of the dry evaporator, a second heat exchange tube bundle 2 is located in the upper guide shell 1, and a first heat exchange tube bundle 5 is located in the lower guide shell. In this embodiment, four inner cavities of the upper guide shell 1 are provided, which are respectively a first upper guide shell inner cavity 103, a second upper guide shell inner cavity 104, a third upper guide shell inner cavity 105 and a fourth upper guide shell inner cavity 106; the number of the inner cavities of the lower guide shell 4 is four, and the four inner cavities are respectively a first lower guide shell inner cavity 403, a second lower guide shell inner cavity 404, a third lower guide shell inner cavity 405 and a fourth lower guide shell inner cavity 406. In this embodiment, the horizontal partition plate 6 and the lower guide shell 4 are integrally formed.
The secondary refrigerant with higher temperature (usually 12 ℃) flows into the upper guide cylinder 1 of the dry evaporator from the inlet of the outer cylinder 3 and forms a gap (namely an upper shell pass) with the second heat exchange tube bundle 2, the secondary refrigerant flows at higher speed in the upper shell pass and carries out convective heat exchange with the outer wall of the second heat exchange tube bundle 2, and heat is released to the refrigerant; the refrigerant flows in the second heat exchange tube bundle 2, performs heat convection with the inner wall of the heat exchange tube, absorbs the heat of the secondary refrigerant to perform phase change heat transfer, and is gradually changed from a liquid refrigerant to a gaseous refrigerant; the refrigerant and the refrigerating medium flow in opposite directions, so that horizontal countercurrent heat exchange is formed.
After flowing through the upper shell pass, the secondary refrigerant turns at one end of the dry evaporator and flows into a gap (lower shell pass) between a lower guide shell 4 of the dry evaporator and the first heat exchange tube bundle 5. Similarly, the secondary refrigerant flows at a higher speed in the lower shell pass, carries out heat convection with the outer wall of the heat exchange tube bundle, continuously exchanges heat with the refrigerant in the first heat exchange tube bundle 5, and releases heat to the refrigerant; the refrigerant flows in the first heat exchange tube bundle 5, carries out heat convection with the inner wall of the heat exchange tube, absorbs the heat of the secondary refrigerant, is gradually changed from the liquid refrigerant to the gaseous refrigerant, and finally is changed into superheated gas. The refrigerant and the refrigerating medium flow in opposite directions, so that horizontal countercurrent heat exchange is realized. The coolant is finally cooled to a coolant with a lower temperature (usually 7 ℃), and flows out of the outlet of the outer cylinder 3, and the refrigeration process is completed.
The refrigerating medium flows slowly in the first outer cavity 301, the second outer cavity 302, the third outer cavity 303, the fourth outer cavity 304, the fifth outer cavity 305 and the sixth outer cavity 306, the mass flow rate of the refrigerating medium is about 3-5% of the total mass flow rate, the refrigerating medium does not exchange heat with the refrigerating medium in the heat exchange tube bundle, the main function of the refrigerating medium is to balance the pressure of the inner cavity and the outer cavity of the guide shell, and the outer shell 3 of the dry-type evaporator is ensured not to be corroded.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.
Claims (10)
1. The utility model provides a modular extrusion molding draft tube, installs in dry-type evaporator's urceolus, its characterized in that: the device comprises an upper guide cylinder, a lower guide cylinder and a horizontal partition plate, wherein the upper guide cylinder and the lower guide cylinder are respectively arranged on the upper side surface and the lower side surface of the horizontal partition plate; a plurality of upper guide cylinder inner cavities are arranged in the upper guide cylinder, adjacent upper guide cylinder inner cavities are separated by upper guide cylinder inner partition plates, and upper guide cylinder outer partition plates are arranged outside the upper guide cylinder; a plurality of lower guide cylinder inner cavities are arranged in the lower guide cylinder, adjacent lower guide cylinder inner cavities are separated by lower guide cylinder inner partition plates, and lower guide cylinder outer partition plates are arranged outside the lower guide cylinder; one section of the heat exchange tube bundle of the dry-type evaporator is positioned in the inner cavity of the upper guide cylinder, and the other section of the heat exchange tube bundle bypasses the tail end of the guide cylinder and is installed in the inner cavity of the lower guide cylinder.
2. The modular extrusion guide shell of claim 1, wherein: the length of the upper guide cylinder and the length of the lower guide cylinder are shorter than the length of the horizontal partition plate along the axial direction of the guide cylinder, and the part of the horizontal partition plate, which exceeds the upper guide cylinder and the lower guide cylinder, is connected and sealed with a tube plate groove of the dry-type evaporator; the other end of the horizontal partition plate is flush with the upper guide cylinder and the lower guide cylinder, and a distance for the heat exchange tube bundle of the dry-type evaporator to bypass is reserved between the other end of the horizontal partition plate and the tube plate at the other end of the dry-type evaporator.
3. The modular extrusion guide shell of claim 1, wherein: the inner wall of the inner cavity of the upper guide cylinder is in a wave line shape, and two vertex angles at the top end of the upper guide cylinder are in an arc shape and are consistent with the shape of the inner circle of the outer cylinder; the outer end of the horizontal partition plate is arc-shaped and is consistent with the shape of the inner circle of the outer cylinder; the inner wall of the inner cavity of the lower guide shell is in a wave line shape, and two bottom angles at the bottom end of the lower guide shell are in arc shapes and are consistent with the shape of the inner circle of the outer cylinder.
4. The modular extrusion guide shell of claim 1, wherein: a first cavity, a second cavity and a third cavity are formed between the outer surface of the upper guide shell and the upper part of the outer shell, the first cavity and the third cavity are positioned on two sides of the upper guide shell, and the second cavity is positioned at the top of the upper guide shell; a fourth cavity, a fifth cavity and a sixth cavity are formed between the outer surface of the lower guide shell and the upper part of the outer shell, the fourth cavity and the sixth cavity are positioned on two sides of the lower guide shell, and the fifth cavity is positioned at the bottom of the lower guide shell; and the inner cavity of the upper guide cylinder, the inner cavity of the lower guide cylinder, the first cavity, the second cavity, the third cavity, the fourth cavity, the fifth cavity and the sixth cavity are filled with full-load refrigerants.
5. The modular extrusion guide shell of claim 1, wherein: the guide shell is formed by splicing an upper guide shell, a lower guide shell and a horizontal clapboard through clamping grooves.
6. The modular extrusion guide shell of claim 1, wherein: the horizontal partition plate and the upper guide cylinder are manufactured into a whole, or the horizontal partition plate and the lower guide cylinder are manufactured into a whole.
7. The modular extrusion guide shell of claim 1, wherein: the upper guide cylinder is made of a plastic material; the horizontal partition plate is made of a plastic material; the lower guide cylinder is made of plastic materials.
8. The modular extrusion guide shell of claim 1, wherein: the combined type extruded part guide cylinder is made by adopting an extrusion molding processing technology.
9. The modular extrusion guide shell of claim 1, wherein: the inner cavity of the upper guide shell is not consistent with the inner cavity of the lower guide shell in shape and size.
10. The modular extrusion guide shell of claim 9, wherein: the area of the cross section of the inner cavity of the upper guide shell is larger than that of the cross section of the inner cavity of the lower guide shell.
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| CN202021203498.9U CN212339687U (en) | 2020-06-24 | 2020-06-24 | Combined type extruded part guide cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021203498.9U CN212339687U (en) | 2020-06-24 | 2020-06-24 | Combined type extruded part guide cylinder |
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| CN212339687U true CN212339687U (en) | 2021-01-12 |
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