CN210980923U - Sleeve type heat exchanger - Google Patents
Sleeve type heat exchanger Download PDFInfo
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- CN210980923U CN210980923U CN201921428842.1U CN201921428842U CN210980923U CN 210980923 U CN210980923 U CN 210980923U CN 201921428842 U CN201921428842 U CN 201921428842U CN 210980923 U CN210980923 U CN 210980923U
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Abstract
The utility model relates to a heat exchanger technical field provides a double pipe heat exchanger, include: the heat exchanger comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein at least one first interlayer is arranged between the inner pipe and the outer pipe, and two opposite ends of the first interlayer are respectively connected with the outer wall of the inner pipe and the inner wall of the outer pipe, so that the area between the inner pipe and the outer pipe is divided into two heat transfer cavities; the inner tube is filled with a first working medium, and the two heat transfer cavities are filled with a second working medium. Under the action of gravity, the stepless regulation of heat exchange amount can be realized by adjusting the angle of the sleeve type heat exchanger rotating around the shaft, wherein the stepless regulation of the heat exchange amount of the cold and hot fluid in the sleeve can be realized in a double-medium heat exchange mode, and the stepless regulation of refrigeration/heat of the fluid outside the sleeve can be realized in a three-medium heat exchange mode.
Description
Technical Field
The utility model relates to a heat exchanger technical field, in particular to double pipe heat exchanger.
Background
With the increasing demand for precise local temperature control for creating cold/hot environment and the progress and application of various refrigeration/heat system technologies and energy-saving technologies represented by heat pipe technologies, new requirements are continuously put forward on the performance, control and structure of heat exchangers, for example, the heat exchanger is particularly required to automatically control the amount of heat exchange and the on-off of heat transfer, so as to relieve the pressure of complex control on a compressor or other system key components, and in addition, new requirements are also put forward on system energy saving.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above technical defects and application requirements, the present application provides a double pipe heat exchanger to solve the problem that the heat exchange amount of the double pipe heat exchanger cannot be changed by rotating the heat exchanger in the prior art.
(II) technical scheme
In order to solve the above problem, the utility model provides a double pipe heat exchanger, include: the heat exchanger comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein at least one first interlayer is arranged between the inner pipe and the outer pipe, and two opposite ends of the first interlayer are respectively connected with the outer wall of the inner pipe and the inner wall of the outer pipe, so that the area between the inner pipe and the outer pipe is divided into two heat transfer cavities;
the inner tube is filled with a first working medium, and the two heat transfer cavities are filled with a second working medium.
A second interlayer is arranged between the inner pipe and the outer pipe, two opposite ends of the second interlayer are connected with the inner wall of the outer pipe, and the second interlayer penetrates through the two heat transfer cavities to divide the two heat transfer cavities into a vacuum heat insulation cavity and two heat transfer cavity units filled with the second working medium;
the area between one side of the second interlayer and the inner wall of the outer tube is the vacuum heat insulation cavity, and the area between the other side of the second interlayer, one side of the first interlayer, the inner wall of the outer tube and the outer wall of the inner tube is the heat transfer cavity unit.
The second interlayer is of an arc-shaped structure and is tangent to the outer wall of the inner pipe.
The first interlayer and the second interlayer are both made of heat-insulating materials or materials with low heat conductivity coefficients.
Wherein the central axis of the inner tube and the central axis of the outer tube are arranged in a non-overlapping manner.
Wherein the outer wall of the outer pipe is provided with a heat-insulating layer, fins or fins;
the inner wall of the inner tube and the outer wall of the inner tube are both provided with threads.
Wherein the two heat transfer chambers are equal in volume.
(III) advantageous effects
The utility model provides a double pipe heat exchanger, the inside first working medium of inner tube is through the pipe wall contact heat transfer with the inner tube, carries out the heat transfer with the heat transfer chamber again. The second working medium in the heat transfer cavity is mainly in contact with the pipe wall of the inner pipe for heat exchange during double-medium heat exchange, and does not exchange heat with the pipe wall of the outer pipe; in the heating mode, the heat is absorbed mainly by the contact of the tube wall of the inner tube and is condensed and released on the tube wall of the outer tube. Furthermore, the contact area of the second working medium of the heat transfer cavity and the pipe wall of the inner pipe and the contact area of the pipe wall of the outer pipe are changed by rotating the double-pipe heat exchanger around the axis, so that the heat exchange quantity of the double-pipe heat exchanger is changed, and the rotation angle of the double-pipe heat exchanger can be automatically adjusted according to the heat exchange quantity requirement. Under the action of gravity, the stepless regulation of heat exchange amount can be realized by adjusting the angle of the sleeve type heat exchanger rotating around the shaft, wherein the stepless regulation of the heat exchange amount of the cold and hot fluid in the sleeve can be realized in a double-medium heat exchange mode, and the stepless regulation of refrigeration/heat of the fluid outside the sleeve can be realized in a three-medium heat exchange mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an internal structure of a double pipe heat exchanger according to an embodiment of the present invention;
fig. 2 is a diagram of the change of the internal liquid level when the double-pipe heat exchanger provided by the embodiment of the invention rotates around the central shaft;
fig. 3 is a schematic external structural view of a double-medium heat exchange mode double-pipe heat exchanger according to an embodiment of the present invention;
fig. 4 is a schematic external structural view of a double pipe heat exchanger in a three-medium heat exchange mode according to an embodiment of the present invention;
wherein, 1, an outer tube; 1a, the inner wall of the outer tube; 1b, the outer wall of the outer pipe; 2. a vacuum insulation chamber; 3. a first heat transfer chamber; 4. a highest liquid level line; 5. a second working medium; 6. a second barrier layer; 7. an inner tube; 7a, the inner wall of the inner tube; 7b, the outer wall of the inner pipe; 8. a second heat transfer chamber; 9. a first working medium; 10. a first barrier layer; 11. sealing the rotating shaft; A. an internal liquid level first state diagram; B. a second state diagram of the internal liquid level; c. A third state diagram of the internal liquid level; D. an internal liquid level fourth state diagram; E. a fifth state diagram of the internal liquid level; F. a sixth state diagram of internal liquid level; G. a seventh state diagram of internal liquid level; H. and the eighth state diagram of the internal liquid level.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is the internal structure schematic diagram of the double pipe heat exchanger provided by the embodiment of the present invention, as shown in fig. 1, the embodiment of the present invention provides a double pipe heat exchanger, including: the heat exchanger comprises an inner pipe 7 and an outer pipe 1 sleeved outside the inner pipe 7, wherein at least one first interlayer 10 is arranged between the inner pipe 7 and the outer pipe 1 so as to divide an area between the inner pipe 7 and the outer pipe 1 into two heat transfer cavities, and two opposite ends of the first interlayer 10 are respectively connected with the outer wall of the inner pipe 7 and the inner wall of the outer pipe 1; the two heat transfer cavities are named as a first heat transfer cavity 3 and a second heat transfer cavity 8 respectively, the first heat transfer cavity 3 and the second heat transfer cavity 8 are filled with the same amount of second working medium 5, and the inner tube 7 is filled with the first working medium 9.
The inner tube 7 may be selected from heat transfer tubes of various sizes commonly used for copper, aluminum, stainless steel, and the like, and the outer tube 1 may be selected from heat transfer tubes of various sizes commonly used for copper, aluminum, stainless steel, and the like. The inner diameter of the outer tube 1 is larger than the outer diameter of the inner tube 7. The inner tube 7 is placed inside the outer tube 1. When the inner tube 7 and the outer tube 1 are arranged tangentially, the area between the inner tube 7 and the outer tube 1 can be divided into two heat transfer cavities only by arranging one first interlayer 10 between the inner tube 7 and the outer tube 1. When the inner tube 7 and the outer tube 1 are not arranged tangentially, two first interlayers 10 need to be arranged between the inner tube 7 and the outer tube 1, so that the area between the inner tube 7 and the outer tube 1 is divided into the first heat transfer cavity 3 and the second heat transfer cavity 8.
The embodiment of the utility model provides an in, the inside first working medium of inner tube carries out the heat transfer through the pipe wall contact heat transfer with the inner tube, again with the heat transfer chamber. The second working medium in the heat transfer cavity is mainly in contact with the pipe wall of the inner pipe for heat exchange during double-medium heat exchange, and does not exchange heat with the pipe wall of the outer pipe; in the heating mode, the heat is absorbed mainly by the contact of the tube wall of the inner tube and is condensed and released on the tube wall of the outer tube. Furthermore, the contact area of the second working medium of the heat transfer cavity and the pipe wall of the inner pipe and the contact area of the pipe wall of the outer pipe are changed by rotating the double-pipe heat exchanger around the axis, so that the heat exchange quantity of the double-pipe heat exchanger is changed, and the rotation angle of the double-pipe heat exchanger can be automatically adjusted according to the heat exchange quantity requirement. Under the action of gravity, the stepless regulation of heat exchange amount can be realized by adjusting the angle of the sleeve type heat exchanger rotating around the shaft, wherein the stepless regulation of the heat exchange amount of the cold and hot fluid in the sleeve can be realized in a double-medium heat exchange mode, and the stepless regulation of refrigeration/heat of the fluid outside the sleeve can be realized in a three-medium heat exchange mode.
On the basis of the embodiment, a second interlayer is arranged between the inner pipe and the outer pipe, the two opposite ends of the second interlayer are connected with the inner wall of the outer pipe, and the second interlayer penetrates through the two heat transfer cavities to divide the two heat transfer cavities into a vacuum heat insulation cavity and two heat transfer cavity units filled with a second working medium;
the area between one side of the second interlayer and the inner wall of the outer pipe is a vacuum heat insulation cavity, and the area between the other side of the second interlayer, one side of the first interlayer, the inner wall of the outer pipe and the outer wall of the inner pipe is a heat transfer cavity unit.
In the embodiment of the present invention, the area between the inner tube 7 and the outer tube 1 is divided into two heat transfer chambers by providing the first interlayer 10, i.e. the first heat transfer chamber 3 on the left and the second interlayer 6 on the right. The vacuum insulation chamber 2 is provided as a vacuum region, and the vacuum insulation chamber 2 plays a role of vacuum insulation. The left end of the second partition 6 is located inside the first heat transfer chamber 3 and the right end of the second partition 6 is located inside the second heat transfer chamber 8. The area between the upper side of the second interlayer and the inner wall 1a of the outer tube is a vacuum heat insulation cavity 2, the area between the lower side of the second interlayer, the left side of the first interlayer, the inner wall of the outer tube and the outer wall of the inner tube is a heat transfer cavity unit, and the area between the lower side of the second interlayer, the right side of the first interlayer, the inner wall of the outer tube and the outer wall of the inner tube is another heat transfer cavity unit.
When two first partition layers 10 are needed, the upper end of the first partition layer 10 is connected with the inner wall of the outer pipe, and the lower end of the first partition layer 10 is connected with the upper part of the outer wall 7b of the inner pipe; the upper end of the second first partition 10 is connected to the lower portion of the outer wall 7b of the inner tube, and the lower end of the second first partition 10 is connected to the lower portion of the inner wall of the outer tube. The second barrier layer is disposed through the first barrier layer 10.
On the basis of the above embodiment, the second interlayer 6 is an arc-shaped structure, and the second interlayer is arranged in a tangent manner with the outer wall of the inner pipe.
In the embodiment of the present invention, the left end of the second interlayer 6 is located inside the first heat transfer chamber 3, the right end of the second interlayer 6 is located inside the second heat transfer chamber 8, and the middle portion of the second interlayer 6 is connected to the outer wall of the inner tube. The second partition layer 6 may be arc-shaped, and an opening of the arc-shaped second partition layer 6 is arranged toward the inner pipe. In this arrangement, the area between the inner tube 7 and the outer tube 1 can now be divided into two heat transfer chambers by merely providing a first barrier 10. At this time, a support member is provided between the middle portion of the second barrier 6 and the inner wall of the outer tube.
On the basis of the above embodiment, the first barrier layer 10 and the second barrier layer 6 are both made of a heat insulating material or a material with a low thermal conductivity.
In the embodiment of the present invention, the first barrier layer 10 and the second barrier layer 6 can play a role of supporting and stabilizing the inner pipe; and the pressure difference between the two heat transfer cavities and the two sides of the vacuum heat insulation cavity is added, so that the effects of stabilizing the position of the inner pipe and damping can be finally achieved.
On the basis of the above-described embodiment, the central axis of the inner tube and the central axis of the outer tube are arranged so as not to coincide with each other.
In the embodiment of the utility model, in order to make the heat transfer area maximize in heat transfer chamber, the central axis of inner tube and the central axis noncoincidence setting of outer tube. In the present embodiment, the central axis of the inner tube is disposed directly above the central axis of the outer tube.
On the basis of the above embodiment, the outer wall 1b of the outer tube is provided with a heat preservation layer, fins or fins; the inner wall 1a of the outer pipe can be smooth, internally threaded or other structures aiming at enhancing heat exchange; the inner wall 7a of the inner tube and the outer wall 7b of the inner tube can be smooth, threaded and have various other structures for enhancing heat exchange.
In the embodiment of the utility model, in the double-medium heat exchange mode, the outer wall 1b of the outer pipe is provided with the heat preservation layer, so that the heat exchange is only carried out between two media, namely the first working medium 9 and the second working medium 5;
in the three-medium heat exchange mode, fins or fins are arranged on the outer wall 1b of the outer pipe, the pipe wall of the outer pipe is in contact with the outer pipe to absorb heat, and the outer pipe of the inner pipe is condensed to release heat.
On the basis of the above-described embodiment, the two heat transfer chambers are equal in volume. The area occupied by the first heat transfer chamber 3 is opposite to the area occupied by the second heat transfer chamber 8.
In the embodiment of the present invention, the volumes of the first heat transfer chamber 3 and the second heat transfer chamber 8 are equal, and the amount of the second working medium in the first heat transfer chamber 3 is the same as the amount of the second working medium in the second heat transfer chamber 8.
The method for manufacturing the double pipe heat exchanger provided by the above embodiment includes: s2, installing at least one first interlayer between the inner pipe and the outer pipe, wherein the two opposite ends of the first interlayer are respectively connected with the outer wall of the inner pipe and the inner wall of the outer pipe, so that the area between the inner pipe and the outer pipe is divided into two heat transfer cavities; the inner pipe is filled with a first working medium, and the two heat transfer cavities are filled with a second working medium.
In the embodiment of the present invention, two ends of the first partition 10 are respectively connected to the outer wall of the inner tube 7 and the inner wall of the outer tube 1, so that the area between the inner tube and the outer tube is divided into two heat transfer chambers, i.e. the first heat transfer chamber 3 and the second heat transfer chamber 8; the inner pipe is filled with a first working medium, and the first heat transfer cavity 3 and the second heat transfer cavity 8 are both filled with a second working medium. The contact area of the second working medium of the heat transfer cavity and the pipe wall of the inner pipe and the contact area of the pipe wall of the outer pipe are changed through the rotation of the double-pipe heat exchanger around the shaft center, so that the heat exchange quantity of the double-pipe heat exchanger is changed, and the rotation angle of the double-pipe heat exchanger can be automatically adjusted according to the heat exchange quantity requirement.
On the basis of the above embodiment, before installing the first interlayer, the method further includes:
and S1, installing a second interlayer, wherein the two opposite ends of the second interlayer are connected with the inner wall of the outer pipe, the second interlayer is tangent to the outer wall of the inner pipe, and the second interlayer penetrates through the two heat transfer cavities.
The embodiment of the utility model provides an in, both ends have all set up the draw-in groove about the upper end of the inner wall 1a of outer tube and the inner wall 1a of outer tube, have set up the draw-in groove in the upper end of the outer wall 7b of inner tube. The left end of the second interlayer is in sealing connection with the clamping groove at the left end of the inner wall 1a of the outer tube, the upper side of the middle of the second interlayer is in sealing connection with the clamping groove at the upper end of the inner wall 1a of the outer tube, the lower side of the middle of the second interlayer is in sealing connection with the clamping groove at the upper end of the outer wall 7b of the inner tube, and the right end of the second interlayer is in sealing connection with the clamping groove at the right end of the inner wall 1a of the outer tube.
The method comprises the following steps of firstly enabling a second interlayer 6 to be respectively connected with three clamping grooves at the upper end and the left end and the right end of the inner wall of an outer pipe, inserting from a pipe section port, further installing the connection between an inner pipe 7 and the second interlayer 6, similarly inserting from the pipe section port, enabling a bulge of the second interlayer 6 to be matched and connected with three grooves on the outer wall of the inner pipe, then inserting a first interlayer 10 from the port, enabling the first interlayer to be stably contacted with the grooves on the outer wall of the inner pipe and the inner wall of the outer pipe, finally sealing the port of the pipe section by welding and the like, and filling working media according to needs.
The heat exchange method of the double pipe heat exchanger provided by the above embodiment includes:
double-medium heat exchange mode: acquiring the direction and angle of rotation required by the double-pipe heat exchanger according to the numerical relationship between the outlet temperature of the fluid in the double-pipe to be cooled/heated and the preset outlet temperature and the position of the double-pipe heat exchanger, and adjusting the position of the double-pipe heat exchanger;
or, three-medium heat exchange mode: and acquiring the direction and angle of rotation required by the double-pipe heat exchanger according to the numerical relationship between the temperature of the cooled/heated fluid outside the double-pipe and the preset temperature and the position of the double-pipe heat exchanger, and adjusting the position of the double-pipe heat exchanger.
Highest liquid level line 4: under the three-medium heat exchange mode, the phenomenon that the liquid filling rate of the second working medium 5 in the outer pipe is too high, which can cause the working medium to contact the outer wall of the inner pipe at the position A of the figure 2 or contact the inner wall of the outer pipe at the position E, is avoided, and therefore the heat transfer effect of the working medium in each mode is influenced. The highest liquid level line 4 may not be provided in the dual medium heat exchange mode.
In the embodiment of the present invention, as shown in fig. 3, during the dual medium heat exchange mode, the sealing rotation shaft 11 is disposed at both ends of the double pipe heat exchanger, so that the double pipe heat exchanger can freely rotate along the axis 180 degrees or 360 degrees. As shown in fig. 4, in the three-medium heat exchange mode, the sealing rotating shafts 11 are disposed at both ends of the double pipe heat exchanger, so that the double pipe heat exchanger can freely rotate 180 degrees or 360 degrees along the axis.
As shown in fig. 2, the double pipe heat exchanger returns to the final internal liquid level first state diagram a from the initial internal liquid level first state diagram a through the internal liquid level second state diagram B, the internal liquid level third state diagram C, the internal liquid level fourth state diagram D, the internal liquid level fifth state diagram E, the internal liquid level sixth state diagram F, the internal liquid level seventh state diagram G and the internal liquid level eighth state diagram H in sequence.
It should be noted that, the outer wall outsourcing insulation material of outer tube, so the heat transfer only goes on between two kinds of media of first working medium 9 and second working medium 5, wherein can change the mode of the outer wall contact heat transfer face size of second working medium 5 and inner tube through the mode of pivoting, and then change the heat transfer volume, this mode can reach the requirement of the required heat transfer volume of adjustment under the mode of fluid flow in the intraductal outer tube of not adjusting, further can be according to the requirement of heat transfer volume in good time automatic adjustment double pipe heat exchanger's sealed rotation axis 11 along the angle of axle autogiration, realize automatically regulated's purpose. The effect of heat exchange is best when the heat exchanger is rotated to the position A in fig. 2, the heat exchange amount is weakest when the heat exchanger is rotated to the position E, the heat exchange amount is gradually reduced when the heat exchanger is rotated to the position A, the heat exchange amount is gradually increased when the heat exchanger is rotated to the position E, and stepless adjustment of the heat exchange amount can be realized.
Specifically, when in a refrigeration mode in the dual medium heat exchange mode, the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference between T2 and T1 is less than 1, the value of T1 minus 1 is less than T2, and the double pipe heat exchanger is in a position from a to E, the double pipe heat exchanger is controlled to rotate clockwise, and the angle of each rotation is 10 ° until the absolute value of the difference between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is less than T2, and the double pipe heat exchanger does not move from the A position to the E position, the double pipe heat exchanger is controlled to rotate anticlockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is from A to E, the double pipe heat exchanger is controlled to rotate anticlockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the actual temperature obtained is T2, if the absolute value of the difference between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is not moved from the a to E position, the double pipe heat exchanger is controlled to rotate clockwise by an angle of 10 ° each time until the absolute value of the difference between T2 and T1 is not less than 1.
When the double-medium heat exchange mode is in a heating mode, the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of subtracting 1 from T1 is less than T2, and the double-pipe heat exchanger is in the position from A to E, the double-pipe heat exchanger is controlled to rotate anticlockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is less than T2, and the double pipe heat exchanger does not move from the A position to the E position, the double pipe heat exchanger is controlled to rotate clockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is from A to E, the double pipe heat exchanger is controlled to rotate clockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the actual temperature obtained is T2, if the absolute value of the difference between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is not in the position from a to E, the double pipe heat exchanger is controlled to rotate counterclockwise by an angle of 10 ° each time until the absolute value of the difference between T2 and T1 is not less than 1.
The outer wall of the outer pipe is in contact with hot fluid outside the sleeve (the fluid outside the pipe can be hot gas phase fluid such as air, and can also be liquid phase fluid such as hot water) to absorb heat, then the heat is firstly transferred to the second working medium 5, at the moment, the second working medium 5 in the two heat transfer cavities does not flow horizontally by external force, the heat transfer cavities are changed into gravity type heat pipe functional areas to operate, the second working medium 5 absorbs heat and evaporates, then the heat is condensed on the cold wall surface of the outer wall of the inner pipe to release heat, and finally the heat is transferred to the first working medium 9, so that the purpose of cooling the fluid outside the sleeve is achieved. The refrigeration effect is the best when the refrigerator rotates to the position A in the figure 2, the refrigeration effect is the worst when the refrigerator rotates to the position E, the refrigeration effect is gradually weakened when the refrigerator rotates to the position A, the refrigeration effect is gradually strengthened when the refrigerator rotates to the position E, and finally the stepless regulation of the refrigeration capacity is realized.
When the double pipe heat exchanger is in a refrigeration mode in a three-medium heat exchange mode, the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of subtracting 1 from T1 is less than T2, and the double pipe heat exchanger is from E to A, the double pipe heat exchanger is controlled to rotate clockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is less than T2, and the double pipe heat exchanger does not move from E to A, the double pipe heat exchanger is controlled to rotate anticlockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is not from E to A, the double pipe heat exchanger is controlled to rotate clockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the actual temperature obtained is T2, if the absolute value of the difference between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is moved from the E to the a position, the double pipe heat exchanger is controlled to rotate counterclockwise by an angle of 10 ° each time until the absolute value of the difference between T2 and T1 is not less than 1.
When the first working medium 9 is a hot fluid, the first working medium exchanges heat with the second working medium through the pipe wall of the inner pipe, at the moment, the second working medium 5 in the first heat transfer cavity 3 and the second heat transfer cavity 8 does not flow in the horizontal direction under the action of external force, the heat transfer cavities are changed into the gravity type heat pipe functional area to operate, the second working medium 5 absorbs heat and evaporates, then the heat is condensed on the cold wall surface of the pipe wall of the outer pipe to release heat, and finally the heat is transferred to the fluid outside the outer pipe of the outer pipe, so that the purpose of heating the fluid outside the sleeve is. Wherein the heating effect is the worst when rotating to the position A of fig. 2, the heating effect is the best when rotating to the position E, the heating effect is gradually enhanced when rotating from the position A to the position E, the heating effect is gradually weakened when rotating from the position E to the position A, and finally the stepless adjustment of the heating amount is realized.
When the double pipe heat exchanger is in a heating mode in a three-medium heat exchange mode, the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of subtracting 1 from T1 is less than T2, and the double pipe heat exchanger is in a position from E to A, the double pipe heat exchanger is controlled to rotate anticlockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is less than T2, and the double pipe heat exchanger does not go from E to A position, the double pipe heat exchanger is controlled to rotate clockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the obtained actual temperature is T2, if the absolute value of the difference value between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is not from E to A, the double pipe heat exchanger is controlled to rotate anticlockwise, and the angle of each rotation is 10 degrees until the absolute value of the difference value between T2 and T1 is not less than 1;
the outlet set temperature is T1, the actual temperature obtained is T2, if the absolute value of the difference between T2 and T1 is less than 1, the value of T1 minus 1 is not less than T2, and the double pipe heat exchanger is moved from the E to the a position, the double pipe heat exchanger is controlled to rotate clockwise by an angle of 10 ° each time until the absolute value of the difference between T2 and T1 is not less than 1.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A double pipe heat exchanger, comprising: the heat exchanger comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein at least one first interlayer is arranged between the inner pipe and the outer pipe, and two opposite ends of the first interlayer are respectively connected with the outer wall of the inner pipe and the inner wall of the outer pipe, so that the area between the inner pipe and the outer pipe is divided into two heat transfer cavities;
the inner tube is filled with a first working medium, and the two heat transfer cavities are filled with a second working medium.
2. The double pipe heat exchanger according to claim 1, wherein a second barrier layer is disposed between the inner pipe and the outer pipe, opposite ends of the second barrier layer are connected to an inner wall of the outer pipe, and the second barrier layer is disposed through the two heat transfer chambers to divide the two heat transfer chambers into a vacuum adiabatic chamber and two heat transfer chamber units filled with the second working medium;
the area between one side of the second interlayer and the inner wall of the outer tube is the vacuum heat insulation cavity, and the area between the other side of the second interlayer, one side of the first interlayer, the inner wall of the outer tube and the outer wall of the inner tube is the heat transfer cavity unit.
3. The double pipe heat exchanger according to claim 2, wherein the second barrier is an arc-shaped structure, and the second barrier is provided tangentially to the outer wall of the inner pipe.
4. The double pipe heat exchanger according to claim 2, wherein the first barrier layer and the second barrier layer are made of a heat insulating material or a material having a low thermal conductivity.
5. The double pipe heat exchanger according to claim 1, wherein a central axis of the inner pipe is disposed non-coincident with a central axis of the outer pipe.
6. The double pipe heat exchanger according to claim 1, wherein an outer wall of the outer pipe is provided with an insulation layer, fins, or fins;
the inner wall of the inner tube and the outer wall of the inner tube are both provided with threads.
7. The double pipe heat exchanger according to claim 1, wherein the volumes of the two heat transfer chambers are equal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110425910A (en) * | 2019-08-30 | 2019-11-08 | 中国科学院理化技术研究所 | Double pipe heat exchanger, heat-exchange method and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425910A (en) * | 2019-08-30 | 2019-11-08 | 中国科学院理化技术研究所 | Double pipe heat exchanger, heat-exchange method and preparation method thereof |
| CN110425910B (en) * | 2019-08-30 | 2024-04-05 | 中国科学院理化技术研究所 | Double-pipe heat exchanger, heat exchange method and manufacturing method thereof |
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