Efficient spiral condenser

Abstract

The utility model discloses an efficient spiral condenser which comprises a shell, a shell pass connector is arranged on the outer wall of the shell, and a flange is arranged on the shell pass connector. The condenser comprises a shell, a condenser pipe, a sealing pipe plate and a spiral plate are arranged at the two ends of the condenser pipe, the spiral plate is of an integral structure, the number of the sealing heads is two, the sealing heads are fixed to the two ends of the shell respectively, the sealing heads are connected with the shell through flanges, and pipe pass connectors are arranged on the sealing heads. The contact time of steam and a refrigerant is prolonged, and the condensation effect is improved; the spiral plate is fixed in the shell, and the rotation direction of the spiral plate is opposite to that of the condensation pipe on the outermost layer, so that the turbulence effect of a refrigerant in the shell can be effectively improved, the overall temperature of the refrigerant in the shell can be ensured to be the same, and the heat exchange effect is improved; different end sockets can be selected to be matched with different tube passes, a one-pass structure or a double-pass structure is adopted, and use is more changeable.

Description

Technical Field

[0001] The utility model relates to the technical field of waste oil recycling, in particular to a high-efficiency spiral condenser. Background Art

[0002] Condenser is a commonly used device in the industrial field. It is a type of heat exchanger. It transfers the heat of steam to the tube wall through the steam running in the tube column, and then continuously transfers heat with the outside world to achieve the purpose of converting gas into liquid. Depending on the structure, common condensers include shell and tube condensers, sleeve condensers and plate condensers.

[0003] Applied to the field of waste oil recovery, specifically in the flash evaporation step, the waste mineral oil undergoes physical sedimentation and is pumped into a flash tank for flash evaporation. The water vapor and a small amount of oil in the waste mineral oil will evaporate from the top of the tank and then be condensed through a condenser to form waste liquid for centralized treatment.

[0004] During the operation of the condenser, the existing condenser has a low heat exchange efficiency, mainly because the contact distance between the refrigerant and the steam is limited. In order to increase the distance, the length of the condenser needs to be increased, which increases the difficulty and cost. On the other hand, the turbulence effect formed by the heat transfer medium is limited, which also makes the center temperature in the same pipeline relatively higher than the side temperature, which also leads to poor condensation effect. Utility Model Content

[0005] (I) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a high-efficiency spiral condenser.

[0007] The specific technical solutions are:

[0008] A high-efficiency spiral condenser comprises a shell, an outer wall of the shell is provided with a shell side interface, and a flange is provided on the shell side interface;

[0009] Condenser, the condenser is spiral and arranged at equal angles, the condenser is a multi-layer structure, the condenser of two adjacent layers rotates in opposite directions, sealed tube sheets are provided at both ends of the condenser, the diameter of the sealed tube sheet is the same as the inner diameter of the shell, and the shell and the sealed tube sheets at both ends form a sealed shell;

[0010] The spiral plate is an integral structure formed by twisting a rectangular plate. The diameter of the circle formed by twisting the spiral plate is the same as the inner diameter of the shell. The side of the spiral plate is fixedly connected to the inner wall of the shell. The twisting direction of the spiral plate is opposite to the spiral direction of the outermost condenser tube.

[0011] There are two sealing heads, which are respectively fixed at two ends of the shell. The sealing heads are connected to the shell by flanges, and a pipe-side interface is provided on the sealing heads.

[0012] Furthermore, a partition is provided at one end of the spiral plate, and the partition is fixedly connected to the sealing tube plate. There are two shell-side interfaces, which are respectively arranged on two side edges of the shell where one end of the partition is provided.

[0013] Furthermore, partitions are provided at both ends of the spiral plate, and the partitions are fixedly connected to the sealing tube plates at both ends respectively. There are four shell-side interfaces and they are respectively arranged on the sides of the two ends of the shell.

[0014] Furthermore, a dividing plate is provided in one of the heads, and the dividing plate divides the head into two cavities, and each cavity is connected to a corresponding pipe-pass interface.

[0015] Furthermore, a dividing plate is provided in each of the two heads, and the dividing plate divides the head into two cavities, each cavity is connected to a corresponding pipe interface, and the number of rotations of the condenser tube is an integer or a half.

[0016] Furthermore, the opening rate of the sealed tube sheet is 25%-45%.

[0017] (II) Beneficial effects

[0018] Compared with the prior art, the technical solution proposed by the utility model has the following advantages:

[0019] (1) The condenser tube is spirally arranged inside the shell, which can effectively increase the steam stroke, increase the contact time between steam and refrigerant, and improve the condensation effect;

[0020] (2) A spiral plate is fixed inside the shell, and the spiral plate rotates in the opposite direction to the outermost condenser tube, which can effectively improve the turbulence effect of the refrigerant inside the shell, thereby ensuring that the refrigerant temperature inside the shell is the same as a whole, thereby improving the heat exchange effect;

[0021] (3) Different heads can be selected to match different pipe passes, and single-pass structure or double-pass structure can be adopted, which makes the use more variable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1It is a cross-sectional view of the condenser in Example 1;

[0024] Figure 2 It is a schematic diagram of the spiral plate and shell structure;

[0025] Figure 3 It is a schematic diagram of the coordination between the spiral plate and the condenser tube;

[0026] Figure 4 This is a schematic diagram of the connection between the condenser tube and the sealed tube sheet;

[0027] Figure 5 This is a schematic diagram of the structure of the shell and the spiral plate in Example 2;

[0028] Figure 6 Schematic diagram of the structure of the shell and the spiral plate in Example 3;

[0029] Figure 7 This is a schematic diagram of the pipe structure in the fourth embodiment;

[0030] Figure 8 This is a schematic diagram of the double-pass structure in Example 5.

[0031] In the figure: 1-shell, 2-shell side interface, 3-flange, 4-condenser, 5-sealed tube sheet, 6-spiral plate, 7-head, 8-tube side interface, 9-partition, 10-pass plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. The described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the relevant prior art, the existing condenser has a low heat exchange efficiency, mainly because the travel of the part where the refrigerant contacts the steam is limited. In order to increase the travel, the length of the condenser needs to be increased, which increases the difficulty and cost. On the other hand, the turbulence effect formed by the heat transfer medium is limited, which also makes the center temperature in the same pipeline relatively higher than the side temperature, which also leads to a worse condensation effect.

[0034] In order to solve the problems existing in the related prior art, the utility model proposes a high-efficiency spiral condenser. The principle and structure of the utility model are described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] Embodiment 1

[0036] See also Figures 1 to 4 ,in Figure 1is a cross-sectional view of the condenser in Example 1, Figure 2 is a schematic diagram of the structure of the spiral plate 6 and the shell 1, Figure 3 It is a schematic diagram of the coordination between the spiral plate 6 and the condenser tube 4. Figure 4 Schematic diagram of the connection between the condenser tube 4 and the sealing tube sheet 5. This embodiment specifically proposes a high-efficiency spiral condenser, including a shell 1, the shell is cylindrical, the outer wall of the shell 1 is provided with a shell interface 2, the shell interface 2 is provided with a flange 3, and the shell structure is at least 2;

[0037] Condenser tubes 4 are spiral and arranged at equal angles, and are arranged in layers. Condenser tubes 4 at the same distance from the central axis of the shell are condenser tubes of the same layer, and the rotation directions of condenser tubes 4 of two adjacent layers are opposite. Sealed tube sheets 5 are provided at both ends of the condenser tubes 4. The diameter of the sealed tube sheets 5 is the same as the inner diameter of the shell 1. The shell 1 and the sealed tube sheets 5 at both ends form a sealed shell process, and the condenser tubes 4 are relatively fixed through the sealed tube sheets 5.

[0038] The spiral plate 6 is an integral structure, specifically formed by twisting a rectangular plate. The twisting process is a conventional processing setting. The diameter of the circle formed by twisting the spiral plate 6 is the same as the inner diameter of the shell 1, and the side of the spiral plate 6 is fixedly connected to the inner wall of the shell 1, so that a spiral channel is formed inside the shell 1, and the twisting direction of the spiral plate 6 is opposite to the spiral direction of the outermost condenser tube 4;

[0039] There are two end caps 7, which are fixed at both ends of the shell 1 respectively. The end caps 7 and the shell 1 are connected by flanges. A pipe-side interface 8 is provided on the end cap 7. There are also at least two pipe-side interfaces 2, which serve as an air inlet and an air outlet respectively.

[0040] Specifically, in this embodiment, a sealed shell side is formed inside the shell 1 by sealing tube sheets 5 at both ends. At this time, the shell side interface 2 is connected to the condensate pipeline to form a fixed loop. The specific shell side interface is located on the sides of both ends of the shell 1, and the condensate enters from one end and is discharged from the other end. At the same time, the end caps 7 and the condenser 4 form a sealed pipe path. The steam first enters the head cap 7 through the pipe path interface 8 on the head cap 7, and then enters the condenser 4. After heat transfer through the condenser 4, the gas is converted into liquid, and then enters the other end head cap 7, and is finally discharged from the pipe path interface 8 at the other end. By designing the condenser 4 to be in a spiral shape, and the spiral plate 6 to be in a spiral shape, the turbulent effect of the steam and the condensate can be improved, which can effectively improve the heat exchange efficiency when condensing in the pipeline, and can also effectively increase the stroke of the condenser to further improve the heat exchange effect. In addition, the spiral plate 6 formed by twisting the entire plate reduces the center sleeve compared to the traditional spiral plate, so that more condenser tubes can be placed inside the shell 1, which can effectively increase the opening rate on the sealed tube plate 5. Due to the limitation of the center sleeve, the opening rate of the traditional sealed tube plate can only reach 40%, while the opening rate of the sealed tube plate 5 in the utility model is 25%-45%, which also effectively improves the condensation effect of the condenser.

[0041] Embodiment 2

[0042] In order to increase the travel length of the condensate in the shell and improve the heat absorption effect of the condensate, please refer to Figure 5 A partition plate 9 is provided at one end of the spiral plate 6, and the partition plate 9 is fixedly connected to the sealing tube plate 5. There are two shell-side interfaces 2, which are respectively arranged on both sides of the end of the shell 1 provided with the partition plate 9. The whole spiral plate 6 and the shell 1 form two spiral channels with openings at both ends, and one end is isolated by the partition plate 9. At the same time, two shell-side interfaces 2 are arranged at the end provided with the partition plate 9, that is, the condensate enters the shell 1 from the shell-side interface 2 at one end, flows to the other end of the shell through the spiral channel on one side of the spiral plate 6, and then flows back to the initial section of the shell from the spiral channel on the other side of the spiral plate, and flows through the corresponding other shell-side interface 2, so that the travel of the condensate can be doubled, thereby improving the heat absorption effect of the condensate.

[0043] Embodiment 3

[0044] When you encounter a medium that needs to be condensed quickly, you hope to pass the condensate in faster. At this time, you can use the following solution. For details, please refer to Figure 6 At this time, partitions 9 are provided at both ends of the spiral plate 6, and the two partitions 9 are fixedly connected to the sealing tube sheets 5 at both ends, so that two independent spiral channels are formed inside the shell. At this time, there are four shell interfaces 2 and they are respectively arranged on the sides of the shell 1 at both ends. When in use, the two spiral channels are respectively passed into the condensate. Compared with the solutions of Example 1 and Example 2, the flow rate of the condensate is doubled, which can effectively improve the condensation effect.

[0045] Embodiment 4

[0046] To increase the length of the line, refer to Figure 7 A dividing plate 10 is provided in a head 7, and the dividing plate 10 divides the head 7 into two cavities. Each cavity is connected to a corresponding pipe interface 8, so that a cavity is formed inside the head 7. After the steam enters a cavity, it will enter the condenser 4, and then enter the other end of the head 7, and then flow back to the corresponding cavity through the condenser 4 connected to the other cavity, so that the pipe length can be effectively increased, and the condensation effect can be effectively improved.

[0047] Embodiment 5

[0048] See also Figure 8 When the steam flow rate needs to be increased, a dividing plate 10 can be provided in each of the two heads 7. The dividing plate 10 divides the head 7 into two cavities, and each cavity is connected to a tube side interface 8. The number of rotations of the condenser 4 is an integer or a half number. It is defined that the condenser rotates 360 degrees along the cylindrical spiral line as one circle, and the condenser 4 is an integer number of circles. This can ensure that the two ends of the condenser 4 are in the same position on the two sealed tube sheets 5. At this time, the cavities on the same side of the two heads 7 are connected to each other. At this time, the tube side forms two independent channels, and the two ends are connected to their respective cavities. The steam pipe is connected to the tube side interfaces 8 of the two tube sides and enters the interior for condensation at the same time. It has better adaptability to steam with a higher flow rate. At the same time, the same effect can be achieved if the number of rotations of the condenser is half. The two ends of the condenser 4 are rotated 180 degrees on the sealed tube sheet 5. In the projection along the length direction, the two ends of the condenser are located on opposite sides of the two sealed tube sheets 5.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high efficiency spiral condenser, characterized in that: It comprises a shell (1), the outer wall of the shell (1) is provided with a shell side interface (2), and the shell side interface (2) is provided with a flange (3); Condenser tubes (4), the condenser tubes (4) are spiral-shaped and arranged at equal angles, the condenser tubes (4) are multi-layered, the condenser tubes (4) of two adjacent layers rotate in opposite directions, sealed tube sheets (5) are provided at both ends of the condenser tubes (4), the diameter of the sealed tube sheets (5) is the same as the inner diameter of the shell (1), and the shell (1) and the sealed tube sheets (5) at both ends form a sealed shell; The spiral plate (6) is an integral structure formed by twisting a rectangular plate, the diameter of the circle formed by twisting the spiral plate (6) is the same as the inner diameter of the shell (1), and the side of the spiral plate (6) is fixedly connected to the inner wall of the shell (1), and the twisting direction of the spiral plate (6) is opposite to the spiral direction of the outermost condenser tube (4); There are two sealing heads (7), which are respectively fixed at two ends of the shell (1); the sealing heads (7) and the shell (1) are connected by flanges; and a pipe interface (8) is provided on the sealing heads (7).

2. A high efficiency spiral condenser according to claim 1, characterized in that: A partition plate (9) is provided at one end of the spiral plate (6), and the partition plate (9) is fixedly connected to the sealing tube plate (5). There are two shell-side interfaces (2) which are respectively provided on two side edges of the shell (1) at one end of which the partition plate (9) is provided.

3. A high-efficiency spiral condenser according to claim 1, characterized in that: Both ends of the spiral plate (6) are provided with partitions (9), and the partitions (9) are fixedly connected to the sealing tube plates (5) at both ends respectively. There are four shell-side interfaces (2) which are respectively arranged on the sides of both ends of the shell (1).

4. A high-efficiency spiral condenser according to claim 2 or 3, characterized in that: A dividing plate (10) is arranged inside one of the sealing heads (7), and the dividing plate (10) divides the sealing head (7) into two cavities, and each cavity is connected to a corresponding pipe-pass interface (8).

5. A high-efficiency spiral condenser according to claim 2 or 3, characterized in that: A dividing plate (10) is provided in each of the two heads (7), and the dividing plate (10) divides the head (7) into two cavities, each cavity is connected to a corresponding pipe interface (8), and the number of rotations of the condenser tube (4) is an integer or a half.

6. The high-efficiency spiral condenser according to claim 1, characterized in that: The opening rate of the sealing tube sheet (5) is 25%-45%.

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