Heat pipe heat exchanger

Abstract

The utility model relates to a heat pipe heat exchanger, which comprises a shell, a heat exchanger, a heat exchanger and a heat exchanger, heat exchange tubes are densely distributed between the upper chamber and the lower chamber in a transverse and longitudinal staggered manner, penetrate through the upper chamber and the lower chamber and transfer heat; the device further comprises a bottom plate. The positioning groove is an annular groove body located in the bottom plate, and the heat exchange tube vertically falls into the positioning groove; the inner pipeline is a pipeline which is parallel to the heat exchange pipes, circumferentially spaced by more than two heat exchange pipes and penetrates through the shell, and water spraying holes are densely distributed in the inner pipeline in the space of the lower cavity in the circumferential direction, and the inner pipeline has the beneficial effects that the inner pipeline is used for replacing a part of the heat exchange pipes, so that the whole device is cleaned; the purpose of no gliding in a heat exchange state is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of energy conservation and environmental protection, and specifically relates to a heat pipe heat exchanger. Background Technology

[0002] Heat pipes transfer heat through the evaporation and condensation of a working fluid within a fully enclosed vacuum shell. They possess a range of advantages, including extremely high thermal conductivity, excellent isothermal properties, adjustable heat transfer area on both the hot and cold sides, long-distance heat transfer capability, and temperature control. Currently, they are widely used in industries such as metallurgy, chemical engineering, oil refining, boilers, ceramics, transportation, textiles, and machinery as energy-saving devices for waste heat recovery and process heat utilization, achieving significant economic benefits.

[0003] The inventors discovered during their research into existing technologies that in the metallurgical field, heat exchange typically utilizes high-temperature flue gas to heat or preheat air for energy conservation. However, to improve heat exchange efficiency, the flue gas usually passes through a series of closely spaced heat pipes, causing dust in the flue gas to be captured by the outer walls of the heat pipes, forming a deposit layer. This deposit layer adheres to the outer walls of the heat pipes, hindering the heat exchange process. Therefore, frequent dust cleaning is necessary to achieve the desired heat exchange. While existing technologies exist for dust cleaning, these solutions are complex and lack the efficiency of online cleaning.

[0004] Therefore, there is an urgent need for a technical solution that can combine online and / or offline cleanup. Summary of the Invention

[0005] To overcome the problems in the existing technology, this utility model proposes a heat pipe exchanger cleaning device with an openable and configurable base plate and online spraying function. This device reduces the number of heat pipes by replacing them with spray pipes while maintaining the optimal heat exchange state of the heat pipes. The technical solution adopted by this utility model is: a heat pipe heat exchanger, comprising:

[0006] The housing includes a complementary and interconnected upper chamber and a lower chamber;

[0007] The upper chamber includes a cold air inlet and a cold air outlet;

[0008] The lower chamber includes a flue gas inlet and a flue gas outlet;

[0009] The upper and lower chambers are densely packed with heat exchange tubes arranged in a staggered manner, and the heat exchange tubes pass through the upper and lower chambers to transfer heat.

[0010] Also includes:

[0011] The base plate is located at the lower part of the lower chamber;

[0012] The positioning groove is an annular groove located on the base plate, and the heat exchange tube is vertically placed in the positioning groove;

[0013] The inner pipeline is a pipeline that runs parallel to the heat exchange tubes and is spaced apart from the heat exchange tubes by two or more in the circumferential direction, penetrating the outer shell. The inner pipeline is located in the lower chamber space and is densely covered with water spray holes in the circumferential direction.

[0014] Furthermore, it also includes:

[0015] The main pipeline is the pipeline that supplies and controls the switches;

[0016] The track hole is an elongated hole located in the lower chamber, near the flue gas outlet, on one or both sides of the outer casing sidewall;

[0017] The horizontal spray pipe is a pipe that passes horizontally through the lower chamber, and the horizontal spray pipe is densely covered with water spray holes facing the heat exchange tube;

[0018] Linear drive is a drive device that reciprocates vertically and extends laterally to the side of the track hole;

[0019] The linear drive is fixedly connected to the horizontal spray pipe via the track hole, and drives the horizontal spray pipe to reciprocate vertically.

[0020] The sealing chamber is a chamber located outside the track hole and fixedly connected to the outer shell. It prevents the leakage of flue gas inside the track hole and has a channel that allows the linear drive to pass through.

[0021] The external pipeline is a flexible pipeline arranged inside the sealed chamber, with a length greater than the stroke of the horizontal spray pipe, and connected to the horizontal spray pipe;

[0022] The main pipeline is connected to the internal pipeline and the external pipeline.

[0023] Furthermore,

[0024] The base plate is provided with a downward slope along the direction of gravity, or with steps that decrease in depth.

[0025] A water collection trough is provided at the lowest point of the base plate.

[0026] Furthermore,

[0027] The bottom of the base plate is equipped with an openable sewage discharge port.

[0028] Furthermore,

[0029] The positioning groove is close to the side of the base plate and has drainage holes arranged around its circumference.

[0030] Furthermore,

[0031] The number of drainage holes on a single positioning groove is greater than two, and they are arranged at equal intervals.

[0032] Furthermore,

[0033] A sealing guide tube is installed on the channel provided on the sealing chamber that allows the linear drive to pass through. The sealing guide tube is in close contact with and slidably engaged with the driving end of the linear drive.

[0034] Furthermore,

[0035] The internal tubing extends from the bottom plate side and passes only through the lower chamber.

[0036] Furthermore,

[0037] The base plate is detachably installed on the lower part of the outer casing.

[0038] Furthermore,

[0039] The water spray holes densely distributed in the internal pipeline and horizontal spray pipe are high-pressure atomizing nozzles.

[0040] The advantages of this utility model over the prior art are as follows: by replacing part of the heat exchange tubes with internal pipes, the entire device can be cleaned, and the heat exchange state can be maintained without slipping; the base plate can be detached and a horizontal spray pipe can be added to make cleaning more convenient. The combination of the two achieves a combination of small cleaning and large cleaning, which meets the flexible needs of daily device operation. Attached Figure Description

[0041] Figure 1 This is a front view of a specific embodiment of the present utility model;

[0042] Figure 2 This is a schematic diagram illustrating the cross arrangement of heat exchange tubes and internal pipes in a specific embodiment of this utility model.

[0043] Figure 3 This is a schematic diagram showing the position of the track hole in a specific embodiment of this utility model;

[0044] Figure 4 This is a schematic diagram showing the positions of the horizontal spray pipe and the sealing chamber in a specific embodiment of this utility model;

[0045] Figure 5 This is a detailed structural diagram of the sealing guide tube according to a specific embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the drainage hole arrangement in a specific embodiment of the present invention;

[0047] The annotation is represented as follows:

[0048] 100 - Outer shell; 101 - Base plate;

[0049] 110 - Air conditioning inlet; 111 - Air conditioning outlet;

[0050] 120 - Flue gas inlet; 121 - Flue gas outlet;

[0051] 130 - Heat exchange tube; 131 - Positioning groove; 1311 - Drain hole;

[0052] 140 - Internal piping; 141 - External piping; 150 - Main piping;

[0053] 160 - Horizontal spray pipe; 161 - Track hole; 162 - Water collection tank;

[0054] 170 - Linear drive; 180 - Sealing chamber; 181 - Sealing guide tube; Detailed Implementation

[0055] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] To overcome the problems in existing technologies, a heat pipe exchanger cleaning device with an openable and configurable base plate and online spraying is proposed. This device reduces the number of heat pipes by replacing them with spray pipes while maintaining the optimal heat exchange state of the heat pipes. Please refer to [link / reference]. Figures 1 to 6 The technical solution includes: a heat pipe heat exchanger, comprising:

[0057] The housing 100 includes a complementary and interconnected upper chamber and a lower chamber;

[0058] The upper chamber includes a cold air inlet 110 and a cold air outlet 111; the upper chamber is filled with air to be heated.

[0059] The lower chamber includes a flue gas inlet 120 and a flue gas outlet 121; the lower chamber is filled with high-temperature flue gas, and due to the different sources of the flue gas, there is usually a large amount of dust medium.

[0060] The upper and lower chambers are densely packed with heat exchange tubes 130 arranged in a staggered manner, and the heat exchange tubes 130 pass through the upper and lower chambers and transfer heat.

[0061] Also includes:

[0062] The base plate 101 is located at the lower part of the lower chamber;

[0063] The positioning groove 131 is an annular groove located on the base plate 101, and the heat exchange tube 130 is vertically placed in the positioning groove 131;

[0064] The inner pipe 140 is arranged parallel to the heat exchange tubes 130, with at least two heat exchange tubes 130 spaced circumferentially apart, and penetrates the outer casing 100. The inner pipe 140 is located within the lower chamber space and is densely covered with water spray holes circumferentially. (See also...) Figure 2 In this embodiment, the inner pipe 140 is provided with spray nozzles in the circumference, which can clean the heat exchange tubes 130 to improve the heat exchange efficiency. Although in this embodiment, the number of heat exchange tubes 130 is replaced by the inner pipe 140, the loss of heat exchange efficiency caused by the heat exchange tubes 130 being covered by the deposit layer is effectively reduced, thus improving the stability of the device.

[0065] In other embodiments, preferably, it also includes:

[0066] Main pipeline 150 is for conveying and controlling switches;

[0067] Track hole 161 is located in the lower chamber; please refer to [reference needed]. Figure 3 The long strip hole on one or both sides of the side wall of the housing 100 near the flue gas outlet 121; the purpose of the track hole 161 is to facilitate the linear drive 170 to extend into the housing 100 and drive the horizontal spray pipe 160 to move, and also to define the path of the horizontal spray pipe 160.

[0068] The horizontal spray pipe 160 is a pipe that passes horizontally through the lower chamber, and the horizontal spray pipe 160 is densely covered with water spray holes facing the heat exchange pipe 130.

[0069] The linear drive 170 is a vertically reciprocating drive device located on the side of the track hole 161.

[0070] The linear drive 170 is fixedly connected to the horizontal spray pipe 160 via the track hole 161, and drives the horizontal spray pipe 160 to reciprocate in the vertical direction.

[0071] The sealing chamber 180 is a chamber located outside the track hole 161 and fixedly connected to the outer shell 100. It blocks the leakage of flue gas in the track hole 161 and has a channel that allows the linear drive 170 to pass through. Since the track hole 161 may leak or guide some flue gas to overflow, the sealing chamber 180 is used to wrap the track hole 161 to achieve an airtight effect.

[0072] The external pipeline 141 is a flexible pipeline arranged inside the sealed chamber 180, with a length greater than the stroke of the horizontal spray pipe 160, and connected to the horizontal spray pipe 160.

[0073] The main pipeline 150 is connected to the inner pipeline 140 and the outer pipeline 141.

[0074] Please note that you should refer to [link / reference]. Figure 1 In this embodiment, there are two sets of linear drives 170, so track holes 161 are provided on both sides. In other embodiments, there is only one set of linear drives 170, which can achieve the purpose of driving the horizontal spray pipe 160.

[0075] In other embodiments, in order to improve the efficiency of impurity removal,

[0076] The base plate 101 is provided with a downward slope along the direction of gravity, or with steps that decrease in depth layer by layer; the steps that decrease in depth layer by layer are stepped, and the positioning groove 131 is located on the plane of each step to achieve the purpose of draining sewage layer by layer and gravity flow.

[0077] A water collection trough 162 is provided at the lowest point of the base plate 101.

[0078] In some embodiments, preferably

[0079] The bottom of the base plate 101 is provided with an openable sewage discharge port.

[0080] In other embodiments, to avoid the positioning groove 131 being blocked by impurities.

[0081] The positioning groove 131 is close to the side of the base plate 101, and a drainage hole 1311 is provided in the circumferential direction.

[0082] In some embodiments, preferably

[0083] The number of drainage holes 1311 on a single positioning groove 131 is greater than two, and they are arranged at equal intervals.

[0084] In some embodiments, to improve the stability of the linear drive 170 and the airtightness during motion. See also Figure 5 ,

[0085] A sealing guide tube 181 is installed on the channel provided on the sealing chamber 180 that allows the linear drive 170 to pass through. The sealing guide tube 181 is in close contact with and slidably engaged with the driving end of the linear drive 170.

[0086] In other embodiments, the inner pipes 140 are only distributed in the lower chamber, and the position occupied by the heat exchange tubes 130 can be filled in the upper chamber by means of branching, which can still improve the heat exchange efficiency.

[0087] The inner pipe 140 extends from the side of the base plate 101 and passes only through the lower chamber.

[0088] In other embodiments, in order to facilitate overall cleanup in an offline state,

[0089] The base plate 101 is detachably installed on the lower part of the outer casing 100.

[0090] In other embodiments, preferably,

[0091] The densely packed spray holes in the inner pipe 140 and the horizontal spray pipe 160 are high-pressure atomizing nozzles.

[0092] In specific operation: During cleaning, the inner pipe 140 is sprayed with a medium to clean the impurities attached to the surface of the heat exchange tube 130. Alternatively, in some preferred embodiments, the horizontal spray pipe 160, driven by the linear drive 170, can repeatedly clean the impurities on the heat exchange tube 130 along the direction of hot flue gas inflow, i.e., the section where the heat exchange tube 130 first contacts the impurities. The medium containing impurities will flow along the bottom plate 101 into the water collection tank 162 under the action of gravity and then be discharged. Simultaneously, when large-scale cleaning is required, the bottom plate 101 can also be disassembled to achieve both online and thorough offline cleaning.

[0093] The beneficial effects are: replacing part of the heat exchange tubes with internal pipes enables the cleaning of the entire unit, ensuring that the heat exchange state does not decline; the detachable base plate with horizontal spray pipes enables more convenient cleaning, and the combination of the two achieves a combination of small and large cleaning, meeting the flexible needs of daily unit operation.

[0094] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat pipe heat exchanger, comprising: a housing (100) comprising complementaryly connected upper and lower chambers; the upper chamber comprising a cold gas inlet (110) and a cold gas outlet (111); the lower chamber comprising a flue gas inlet (120) and a flue gas outlet (121); a plurality of heat exchange pipes (130) transversely and longitudinally staggered between the upper and lower chambers, the heat exchange pipes (130) passing through the upper and lower chambers and transferring heat; characterized in that it further comprises: a bottom plate (101) located at the lower part of the lower chamber; a positioning groove (131) being an annular groove located on the bottom plate (101), the heat exchange pipes (130) vertically falling into the positioning groove (131); an inner pipe (140) being a pipe passing through the housing (100) and arranged in parallel with the heat exchange pipes (130) and circumferentially spaced apart from more than two heat exchange pipes (130), the inner pipe (140) being circumferentially provided with water injection holes in the space of the lower chamber.

2. The heat pipe heat exchanger according to claim 1, wherein further comprising: a main pipe (150) being a pipe for conveying and controlling switching; a track hole (161) being a long hole located in the lower chamber, close to the flue gas outlet (121) and on one side or both sides of the side wall of the housing (100); a transverse spray pipe (160) being a pipe body transversely passing through the lower chamber, the transverse spray pipe (160) being provided with water injection holes towards the heat exchange pipes (130); a linear drive (170) being a drive device located laterally to the track hole (161) and vertically reciprocating; the linear drive (170) being fixedly connected with the transverse spray pipe (160) through the track hole (161) and driving the transverse spray pipe (160) to vertically reciprocate; a sealing bin (180) being a bin body fixedly connected to the housing (100) outside the track hole (161), blocking the leakage of flue gas in the track hole (161) and being provided with a hole allowing the linear drive (170) to pass through; an outer pipe (141) being a flexible pipe connected with the transverse spray pipe (160) and arranged in the sealing bin (180) and having a length greater than the stroke of the transverse spray pipe (160); the main pipe (150) being in communication with the inner pipe (140) and the outer pipe (141).

3. The heat pipe heat exchanger according to claim 2, wherein: the bottom plate (101) is provided with an inclined downward slope or stepwise decreasing steps along the direction of gravity; the lowest part of the bottom plate (101) is provided with a water collecting groove (162).

4. The heat pipe heat exchanger according to claim 3, wherein: the bottom of the bottom plate (101) is provided with an openable and closable external discharge outlet.

5. The heat pipe heat exchanger according to claim 3, wherein: the positioning groove (131) is circumferentially provided with a drain hole (1311) close to the side of the bottom plate (101).

6. The heat pipe heat exchanger according to claim 5, wherein: the number of drain holes (1311) on a single positioning groove (131) is greater than two and arranged at equal intervals.

7. The heat pipe heat exchanger according to claim 2, characterized in that, A sealing guide tube (181) is installed on the hole of the sealing chamber (180) through which the linear drive (170) passes, and the sealing guide tube (181) is in close contact with and slidingly fitted to the driving end of the linear drive (170).

8. The heat pipe heat exchanger according to claim 1, characterized in that, The inner pipe (140) extends from the side of the bottom plate (101) and only passes through the lower chamber.

9. The heat pipe heat exchanger according to any one of claims 1-8, characterized in that, The bottom plate (101) is detachably installed at the lower part of the shell (100).

10. The heat pipe heat exchanger according to any one of claims 2-8, characterized in that, The water spraying holes of the inner pipe (140) and the cross jet pipe (160) are high-pressure atomizing nozzles.

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