Hanging type heater convenient to pull

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a hanging type heater convenient to draw and pull, which comprises a plurality of rows of heat exchange tube rows and tube plates which can seal a fluidized bed window and are vertically arranged, each row of heat exchange tube row comprises a plurality of branch tubes which are arranged in parallel, and an upper collecting main and a lower collecting main which are respectively communicated with two ends of the branch tubes, the branch pipes are arranged in the longitudinal direction, and the upper collecting pipe and the lower collecting pipe are arranged in the transverse direction. A supporting frame is fixed to the tube plate and / or the heat exchange tube row, a suspension assembly is arranged at the top of the supporting frame and comprises an installation frame and a guide roller, the installation frame is fixed to the supporting frame in a height-adjustable mode, and the guide roller is rotatably installed on the installation frame. And the guide rollers are in rolling fit with a drawing slide rail at the upper part in the fluidized bed and suspend the heat exchange tube row in the fluidized bed. Compared with the prior art, the guide roller is matched with the drawing slide rail in the fluidized bed, so that time and labor are saved, the working intensity is reduced, the guide roller has the functions of guiding, drawing and suspending at the same time, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a hanging heater which is easy to pull out. Background Art

[0002] Fluidized bed heating dryer is a large category of traditional drying equipment, widely used in chemical, petroleum, feed and other industries, suitable for drying various granular, flaky and other materials and heat-sensitive materials. For example, the Chinese patent document with announcement number CN2716777Y discloses a fluidized bed dryer with a built-in heat exchanger, which belongs to the technical field of dryers. It is mainly composed of an upper box, a lower box and a fluidizing section, wherein the upper box includes a feed inlet and an air outlet, the lower box includes a fan, an air inlet and a discharge port, the fluidizing section is connected between the upper and lower boxes, and the built-in heat exchanger is arranged on the fluidizing section. The built-in heat exchanger is divided into several groups, arranged in a horizontal tube bundle form, and arranged in an orderly manner according to the "U"-shaped metal pipes and evenly distributed on the fluidizing section. Each built-in heat exchanger consists of a built-in heat exchanger drum, a built-in heat exchanger steam inlet, a built-in heat exchanger condensate outlet and a steam coil. The steam inlet and condensate outlet of the built-in heat exchanger are both connected to the built-in heat exchanger drum, and the steam coil is arranged vertically on the fluidizing section in a "U" shape. It has the advantages of reducing power consumption, energy consumption, good drying effect, high heat exchange efficiency, small footprint and ideal environmental protection.

[0003] Another example is a Chinese patent document with announcement number CN201497295U that discloses a fluidized bed dryer with a vertical tube bundle heat exchanger. It solves the problems of energy consumption, power consumption, investment and environmental protection in the existing fluidized bed, and achieves the effect of reducing energy consumption, power consumption, investment and environmental pressure. Its structure is as follows: it includes a fluidized bed body, and at least one group of built-in heat exchangers is provided in the fluidizing section of the fluidized bed body. Each group of built-in heat exchangers has a number of metal vertical branches, which form a vertical tube bundle form. On the basis of a fluidized bed dryer of general structural form, several groups of built-in heat exchangers are added to the fluidizing section of a traditional fluidized bed. The coils of the built-in heat exchanger are in the form of a vertical tube bundle. This arrangement has little effect on the fluidization quality and can obtain a larger heat exchange area. Under the same output, the area of ​​the fluidized bed and the volume of the dust removal equipment are reduced, the system occupies a small area and requires less investment. Since the main heat source of the fluidized bed dryer with built-in heat exchanger is the heat provided by the built-in heat exchanger, the steam volume and power consumption of the fluidized bed are relatively low. Compared with the traditional fluidized bed dryer, the operating cost of the system is reduced.

[0004] The inventors have found that although the dryer (heater) of the above prior art can be pulled out and pushed in from the window of the fluidized bed, it has the following disadvantages: ① Pushing / pulling the dryer into / out of the fluidized bed is time-consuming and labor-intensive, and the work intensity is high; ② The fluidized bed reaction material (powder / particles) currently used by the applicant is sprayed out from the bottom, dried by heat exchange in the heater, and then sucked away from the top, and the distance between the heater and the material nozzle is difficult to adjust; ③ The window size of the fluidized bed is fixed, so the height of the heater needs to be strictly adapted to the window size to avoid bumps. Summary of the invention

[0005] In view of the above technical problems in the prior art, the utility model provides a hanging heater which is easy to pull out.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] Provided is a hanging heater that is easy to pull out, comprising multiple rows of heat exchange tubes and vertically arranged tube sheets that can seal windows of a fluidized bed, each row of heat exchange tubes comprising multiple branch tubes arranged in parallel, and upper and lower headers that respectively connect the two ends of the multiple branch tubes, each branch tube is arranged longitudinally, the upper and lower headers are arranged transversely, and the upper and lower headers are welded and fixed to the tube sheets; a support frame is fixed to the tube sheets and / or the heat exchange tubes, a suspension assembly is provided on the top of the support frame, the suspension assembly comprises a mounting frame and a guide roller, the mounting frame is height-adjustably fixed to the support frame, the guide roller is rotatably mounted on the mounting frame, the guide roller rolls to cooperate with a pull-out slide rail at the upper part of the fluidized bed and suspends the heat exchange tubes in the fluidized bed.

[0008] As a further optional solution, both the support frame and the mounting frame are provided with locking holes, and the locking holes of the support frame and the mounting frame are aligned with each other. The locking holes of the support frame and / or the mounting frame are longitudinally arranged long holes, and bolt and nut assemblies are passed through the locking holes, so that the support frame and the mounting frame are locked to each other.

[0009] As a further optional solution, the same mounting frame is provided with a plurality of the locking holes.

[0010] As a further optional solution, there are multiple groups of suspension components, which are spaced apart and distributed on both sides above the heat exchange tube array.

[0011] As a further optional solution, the guide roller is in an I-shape, and the drawer rail is an I-beam.

[0012] As a further optional solution, a notch is provided on the side of the support frame, and the guide roller is aligned with the notch, so that the guide roller is located directly above the heat exchange tube row.

[0013] As a further optional scheme, the support frame includes an upper support plate and a lower support plate, the suspension assembly is arranged on the upper support plate, the lower support plate is provided with a plurality of U-shaped lower positioning grooves with the notches facing upward, and the lower collecting pipes of the multiple rows of heat exchange tubes are embedded in the plurality of lower positioning grooves to be supported; the upper support plate is provided with a plurality of U-shaped upper positioning grooves with the notches facing downward, and the upper collecting pipes of the multiple rows of heat exchange tubes are embedded in the plurality of upper positioning grooves.

[0014] As a further optional solution, a plurality of reinforcing side plates are commonly connected between the upper supporting plate and the lower supporting plate, and auxiliary plates are connected between the plurality of reinforcing side plates.

[0015] As a further optional solution, a connecting plate is connected between the multiple upper support plates.

[0016] As a further optional scheme, it also includes an inlet header and an outlet header fixed to the outside of the tube sheet, the ports of the upper headers of the multiple rows of heat exchange tubes are welded and fixed to the tube holes of the tube sheet and connected to the inlet header, and the inlet header is connected to the steam input pipe; the ports of the lower headers of the multiple rows of heat exchange tubes are welded and fixed to the tube holes of the tube sheet and connected to the outlet header, and the outlet header is connected to a drain pipe.

[0017] Beneficial effects of the utility model:

[0018] The utility model discloses a hanging heater which is easy to pull out. When installing, the height of the mounting frame relative to the supporting frame is adjusted first, and then the mounting frame and the supporting frame are locked. Then, the whole heater is moved to the window of the fluidized bed, and the guide roller is placed on the pulling slide rail at the upper part of the fluidized bed. Then, the slide rail is pulled out to push the whole heater into the fluidized bed.

[0019] When in use, low-temperature steam flows downward from the upper header to each branch pipe. The steam cools down and condenses in the branch pipe through the pipe wall and the dried material flowing upward in the fluidized bed. After condensing into water, it gathers in the lower header below.

[0020] Compared with the prior art, ① the guide roller cooperates with the pull-out slide rail in the fluidized bed, which saves time and effort and reduces work intensity, and the guide roller also plays the role of guiding, pulling and suspending, and has a simple structure; ② by adjusting the height of the mounting frame relative to the support frame, the height of the heat exchange tube row in the fluidized bed is changed, so that the distance between the heat exchange tube row and the material nozzle at the bottom of the fluidized bed can be adjusted; and for different heat exchange tube rows with slight height differences, they can be compatible by adjusting the height of the mounting frame to avoid collision with the fluidized bed window. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a hanging heater that is easy to pull out in an embodiment.

[0022] Figure 2It is a schematic diagram of the structure of a hanging heater that is easy to pull out after the heat exchange tube array is hidden in the embodiment.

[0023] Figure 3 Schematic diagram of the structure of the suspension assembly in the embodiment.

[0024] Figure 4 Schematic diagram of the fluidized bed window.

[0025] Reference numerals:

[0026] Tube sheet 1, tube hole 11;

[0027] Heat exchange tube row 2, branch tube 21, upper header 22, lower header 23;

[0028] Inlet header 3, steam input pipe 31, outlet header 4, drain pipe 41;

[0029] Support frame 5, upper support plate 51, notch 511, upper positioning groove 512, lower support plate 52, lower positioning groove 521;

[0030] Suspension assembly 6, mounting frame 61, locking hole 62, guide roller 63;

[0031] Strengthen the side plates 71 , the auxiliary plates 72 , and the connecting plates 73 .

[0032] Fluidized bed 8, window 81, and drawer rail 82. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] A hanging heater that is easy to pull out in this embodiment is used to cooperate with Figure 4 The fluidized bed 8 shown in the figure is used, and the fluidized bed 8 has a plurality of windows 81, and a plurality of heaters can be pushed into the fluidized bed 8 through the windows 81 to heat and dry the material flowing through the fluidized bed 8; the plurality of heaters can also be pulled out from the windows 81 for cleaning / maintenance. Figures 1 to 3As shown, it includes multiple rows of heat exchange tubes 2 and a vertically arranged tube sheet 1 capable of sealing the window 81 of the fluidized bed 8. Each row of heat exchange tubes 2 includes multiple branch tubes 21 arranged in parallel, and an upper header 22 and a lower header 23 respectively connecting the two ends of the multiple branch tubes 21. Each branch tube 21 is arranged in the longitudinal direction, and the upper header 22 and the lower header 23 are arranged in the transverse direction. The upper header 22 and the lower header 23 are welded and fixed to the tube sheet 1. The heater also includes an inlet header 3 and an outlet header 4 fixed to the outside of the tube sheet 1. The ports of the upper headers 22 of the multiple rows of heat exchange tubes 2 are welded and fixed to the tube holes 11 of the tube sheet 1 and connected to the inlet header 3. The inlet header 3 is connected to a steam input pipe 31. The ports of the lower headers 23 of the multiple rows of heat exchange tubes 2 are welded and fixed to the tube holes 11 of the tube sheet 1 and connected to the outlet header 4. The outlet header 4 is connected to a drain pipe 41. When in use, low-temperature steam enters the inlet header 3 from the steam input pipe 31, is then divided into each upper header 22, and then is divided downward to each branch pipe 21. The steam is cooled and condensed in the branch pipe 21 through the pipe wall and the dried material in the fluidized bed 8. After condensing into water, it is gathered in the lower header 23 below, and then directly flows to the outlet header 4 and flows out from the drain pipe 41.

[0035] In this embodiment, the tube sheet 1 and / or the heat exchange tube row 2 are fixed with a support frame 5, and a suspension assembly 6 is arranged on the top of the support frame 5. The suspension assembly 6 includes a mounting frame 61 and a guide roller 63. The mounting frame 61 is fixed to the support frame 5 with adjustable height, and the guide roller 63 is rotatably mounted on the mounting frame 61. The guide roller 63 rolls with the pull-out slide rail 82 at the upper part of the fluidized bed 8 and suspends the heat exchange tube row 2 in the fluidized bed 8. During installation, first adjust the height of the mounting frame 61 relative to the support frame 5, then lock the mounting frame 61 with the support frame 5, and then move the entire heater to the window 81 of the fluidized bed 8, so that the guide roller 63 rests on the pull-out slide rail 82 at the upper part of the fluidized bed 8, and then pull the slide rail 82 to push the entire heater into the fluidized bed 8. Compared with the prior art, ① the guide roller 63 cooperates with the pull-out slide rail 82 in the fluidized bed 8, which saves time and effort and reduces work intensity, and the guide roller 63 also plays the role of guiding, pulling and suspending, and has a simple structure; ② by adjusting the height of the mounting frame 61 relative to the support frame 5, the height of the heat exchange tube row 2 in the fluidized bed 8 is changed, so that the distance between the heat exchange tube row 2 and the material nozzle at the bottom of the fluidized bed 8 can be adjusted; and for different heat exchange tube rows 2 with slight height differences, they can be compatible by adjusting the height of the mounting frame 61 to avoid collision with the window 81 of the fluidized bed 8.

[0036] In this embodiment, both the support frame 5 and the mounting frame 61 are provided with locking holes 62, and the locking holes 62 of the support frame 5 and the locking holes 62 of the mounting frame 61 are aligned with each other, and the locking holes 62 of the support frame 5 and the mounting frame 61 are longitudinally arranged long holes, and the locking holes 62 are penetrated by bolt and nut assemblies (not shown in the figure), so as to lock the support frame 5 and the mounting frame 61 with each other. In practice, only the locking hole 62 of one of the support frame 5 and the mounting frame 61 is a long hole, and the locking hole 62 of the other may be a round hole. The same mounting frame 61 is provided with a plurality of the locking holes 62, and the plurality of locking holes 62 are arranged in an array.

[0037] In this embodiment, the number of the suspension components 6 is multiple, specifically four groups, which are spaced and distributed on both sides above the heat exchange tube array 2. The guide roller 63 is I-shaped, and the pull-out slide rail 82 is an I-shaped steel.

[0038] In this embodiment, a notch 511 is provided on the side of the support frame 5, and the guide roller 63 is aligned with the notch 511, so that the guide roller 63 is located directly above the heat exchange tube row 2, does not protrude from the lateral side of the heat exchange tube row 2, and does not increase the lateral occupied space due to the guide roller 63.

[0039] In this embodiment, the support frame 5 includes an upper support plate 51 and a lower support plate 52, and the suspension assembly 6 is arranged on the upper support plate 51. The lower support plate 52 is provided with a plurality of lower positioning grooves 521 with notches facing upward, and the lower headers 23 of the multiple rows of heat exchange tubes 2 are embedded in the plurality of lower positioning grooves 521 to be supported; the upper support plate 51 is provided with a plurality of upper positioning grooves 512 with notches facing downward, and the upper headers 22 of the multiple rows of heat exchange tubes 2 are embedded in the plurality of upper positioning grooves 512. The lower positioning grooves 521 of the lower support plate 52 and the upper positioning grooves 512 of the upper support plate 51 can stably clamp the upper header 22 and the lower header 23 to prevent their lateral displacement, and can stably support the lower header 23 upward.

[0040] In this embodiment, a plurality of reinforcing side plates 71 are also commonly connected between the upper support plate 51 and the lower support plate 52, and an auxiliary plate 72 is connected between the plurality of reinforcing side plates. A connecting plate 73 is connected between the plurality of upper support plates 51. The connecting plate 73 is welded and fixed to the tube sheet 1, so that the upper support plate 51 and the lower support plate 52 form a stable whole.

[0041] In the description of the present invention, it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the above detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the utility model.

[0043] In the description of the present utility model, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A hanging heater that is easy to pull out, characterized by: The invention relates to a tube sheet (1) comprising a plurality of rows of heat exchange tubes (2) and a window (81) capable of sealing a fluidized bed (8). Each row of heat exchange tubes (2) comprises a plurality of branch tubes (21) arranged in parallel, and an upper header (22) and a lower header (23) respectively connecting the two ends of the plurality of branch tubes (21). The branch tubes (21) are arranged in the longitudinal direction, and the upper header (22) and the lower header (23) are arranged in the transverse direction. The upper header (22) and the lower header (23) are welded and fixed to the tube sheet (1); The plate (1) and / or the heat exchange tube row (2) are fixed with a support frame (5), and a suspension assembly (6) is arranged on the top of the support frame (5). The suspension assembly (6) comprises a mounting frame (61) and a guide roller (63). The mounting frame (61) is fixed to the support frame (5) in an adjustable height, and the guide roller (63) is rotatably mounted on the mounting frame (61). The guide roller (63) rolls to cooperate with the pull-out slide rail (82) at the upper part of the fluidized bed (8) and suspends the heat exchange tube row (2) in the fluidized bed (8).

2. The easy-to-pull hanging heater according to claim 1 is characterized in that: The support frame (5) and the mounting frame (61) are both provided with locking holes (62), and the locking holes (62) of the support frame (5) and the locking holes (62) of the mounting frame (61) are aligned with each other. The locking holes (62) of the support frame (5) and / or the mounting frame (61) are longitudinally arranged long holes, and bolt and nut assemblies are passed through the locking holes (62), so that the support frame (5) and the mounting frame (61) are mutually locked.

3. The easy-to-pull hanging heater according to claim 2 is characterized in that: The same mounting frame (61) is provided with a plurality of locking holes (62).

4. The easy-to-pull hanging heater according to claim 1 is characterized in that: The number of the suspension components (6) is multiple, and they are distributed at intervals on both sides above the heat exchange tube array (2).

5. The easy-to-pull hanging heater according to claim 1 is characterized in that: The guide roller (63) is in an I-shape, and the drawer slide rail (82) is an I-steel.

6. The easy-to-pull hanging heater according to claim 1 is characterized in that: A notch (511) is provided on the side of the support frame (5), and the guide roller (63) is aligned with the notch (511), so that the guide roller (63) is located directly above the heat exchange tube row (2).

7. The easy-to-pull hanging heater according to claim 1 is characterized in that: The support frame (5) comprises an upper support plate (51) and a lower support plate (52); the suspension assembly (6) is arranged on the upper support plate (51); the lower support plate (52) is provided with a plurality of U-shaped lower positioning grooves (521) with notches facing upwards; the lower headers (23) of the multiple rows of heat exchange tube arrays (2) are embedded in the plurality of lower positioning grooves (521) to be supported; and the upper support plate (51) is provided with a plurality of U-shaped upper positioning grooves (512) with notches facing downwards; the upper headers (22) of the multiple rows of heat exchange tube arrays (2) are embedded in the plurality of upper positioning grooves (512).

8. The easy-to-pull hanging heater according to claim 7 is characterized in that: A plurality of reinforcing side plates (71) are also commonly connected between the upper supporting plate (51) and the lower supporting plate (52), and an auxiliary plate (72) is connected between the plurality of reinforcing side plates.

9. The easy-to-pull hanging heater according to claim 7 is characterized in that: A connecting plate (73) is connected between the plurality of upper supporting plates (51).

10. The easy-to-pull hanging heater according to claim 1 is characterized in that: It also includes an inlet header (3) and an outlet header (4) fixed to the outside of the tube sheet (1); the ports of the upper headers (22) of the multiple rows of heat exchange tubes (2) are welded and fixed to the tube holes (11) of the tube sheet (1) and are connected to the inlet header (3); the inlet header (3) is connected to a steam input pipe (31); the ports of the lower headers (23) of the multiple rows of heat exchange tubes (2) are welded and fixed to the tube holes (11) of the tube sheet (1) and are connected to the outlet header (4); the outlet header (4) is connected to a drainage pipe (41).

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