High-temperature powder heat exchanger

Abstract

The utility model discloses a high-temperature powder heat exchanger. The high-temperature powder heat exchanger comprises a shell, wherein the shell comprises a cavity extending in the first direction; a feed port is formed in the top of the shell edge, and a discharge port is formed in the bottom of the shell edge. The heat exchange device is arranged in the shell and comprises a plate bundle assembly. The plate bundle assembly comprises a medium runner and a powder runner. The plate bundle assembly comprises a plurality of heat exchange plates arranged at intervals in the second direction. A powder runner is defined by every two adjacent heat exchange plates. Each heat exchange plate extends in the first direction and is provided with a medium flow channel. A small water inlet pipe and a small water outlet pipe are arranged on one side, in the second direction, of each heat exchange plate. In the first direction, the small water inlet pipe and the small water outlet pipe are arranged close to the discharging port, and the small water outlet pipe is arranged above the small water inlet pipe. And the cooling water inlet and outlet small pipes are close as much as possible to reduce the swell difference between the two small pipes, thereby ensuring the safe use of the high-temperature powder heat exchanger.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature powders, in particular to a high-temperature powder heat exchanger. Background Art

[0002] For powder heat exchangers, the fundamental principle is to use the cooling water in the heat exchange plate to heat the powder outside the plate, which will cause the shell of the heat exchanger that contacts the material and the heat exchange plate that contacts the cooling water to be subjected to different temperatures. Different temperatures will produce different expansion amounts. The temperature difference between the powder at room temperature and the cooling water is not large, and the difference in the different expansion amounts produced is not large, so it will not cause harm to the heat exchanger equipment. However, the temperature difference between the high-temperature powder and the cooling water can be several hundred degrees, even reaching more than 500 degrees. At this time, different temperatures will produce different expansion amounts. In the prior art, the inlet and outlet water pipes on the plate are set at both ends (as shown in the attached figure of the specification). Figure 1 The expansion at this time will cause the welding joints of the water inlet and outlet pipes on the plate to crack, affecting the safe use of the equipment. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a high-temperature powder heat exchanger to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is a high-temperature powder heat exchanger, comprising:

[0005] The shell comprises a cavity extending along a first direction. A feed inlet is arranged at the top of the shell and a discharge outlet is arranged at the bottom. Both the feed inlet and the discharge outlet are connected to the cavity.

[0006] The heat exchange device is arranged in the shell and comprises a plate bundle assembly. The plate bundle assembly comprises a medium flow channel and a powder flow channel.

[0007] The plate bundle assembly includes a plurality of heat exchange plates arranged at intervals along a second direction, and the first direction is perpendicular to the second direction. Two adjacent heat exchange plates form a powder flow channel. Each heat exchange plate extends along the first direction and is provided with a medium flow channel. The powder flow channel is connected to the feed port and the discharge port for circulating high-temperature powder.

[0008] Each heat exchange plate is provided with a water inlet tube and a water outlet tube on one side along the second direction. Along the first direction, the water inlet tube and the water outlet tube are both arranged close to the discharge port, and the water outlet tube is arranged above the water inlet tube.

[0009] The high-temperature powder heat exchanger provided by the utility model has a large expansion volume for the shell and a small expansion volume for the cooling water inside the heat exchange plate because the small inlet and outlet water pipes on the heat exchange plate module are fixed on the shell plate of the heat exchanger and the entire heat exchange plate group is fixed. When the expansion volume difference is greater than 5mm, there will be a risk of cracking. Therefore, the cooling water inlet and outlet small pipes are as close as possible to reduce the difference in expansion volume between the two, thereby ensuring the safe use of the high-temperature powder heat exchanger. The plate bundle assembly composed of multiple heat exchange plates can change the number and gap of plates according to the working conditions, and can meet the cooling requirements of different conditions.

[0010] In some embodiments, the housing further comprises a cooling water inlet pipeline and a cooling water outlet pipeline, wherein the cooling water inlet pipeline is connected to the plurality of water inlet small tubes, and the cooling water outlet pipeline is connected to the plurality of water outlet small tubes, so that external cooling water flows through the medium flow channel.

[0011] In some embodiments, the housing further includes an inspection component. The inspection component includes a sight glass pipeline and an air blowing tube. The sight glass pipeline is opened on one side along the second direction and is arranged corresponding to the positions of the water inlet tube and the water outlet tube. The air blowing tube is arranged inside the sight glass pipeline to blow off the material attached to the sight glass.

[0012] With the above technical solution, sight glasses are installed at the upper and lower parts of the heat exchanger for easy observation. Since the powder will block the sight glass, a φ10 small tube is added inside the sight glass for ventilation to blow off the material attached to the sight glass, so that the situation of the material inside the heat exchanger can be observed in real time.

[0013] In some embodiments, each of the heat exchange plates is a pillow-type plate.

[0014] By adopting the above technical solution, illustratively, the present application utilizes the advantages of pillow-type plates, which have a smooth surface and are not easily sticky to dust or solid particles in the material. The plate bundle assembly can change the number and spacing of plates according to working conditions, and can meet the cooling of flue gas in different conditions. For example, if the particles in the flue gas are large, the distance between the plates can be increased to prevent blockage.

[0015] In some embodiments, an exhaust port is further provided on the top of the shell.

[0016] In some embodiments, the sight glass pipeline and the air blowing tube are provided on one side of the shell along the third direction and near the feed port, and the first direction, the second direction and the third direction are perpendicular to each other.

[0017] By adopting the above technical solution, a sight glass pipeline and a small air blowing tube are also arranged at the position of the shell near the feed port to facilitate observation of the feeding condition of the high-temperature powder.

[0018] In some embodiments, the high-temperature powder heat exchanger further includes a support seat. The support seats are provided on both sides of the shell along the third direction for fixing and installing the high-temperature powder heat exchanger.

[0019] By adopting the above technical solution, the high-temperature powder heat exchanger is fixedly connected to the outside through the support base. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a plate in the prior art;

[0021] Figure 2 This is a three-dimensional diagram of an embodiment of a high-temperature powder heat exchanger of the utility model;

[0022] Figure 3 This is a cross-sectional view of an embodiment of a high-temperature powder heat exchanger of the utility model;

[0023] Figure 4 This is a schematic structural diagram of a heat exchange plate of an embodiment of a high-temperature powder heat exchanger of the utility model;

[0024] In the figure:

[0025] 1-High temperature powder heat exchanger;

[0026] 2-shell; 20-feed port; 21-discharge port; 22-exhaust port; 23-water inlet pipe; 24-water outlet pipe;

[0027] 3-heat exchange device; 30-plate bundle assembly; 31-heat exchange plate; 32-water inlet pipe; 33-water outlet pipe; 40-sight glass pipeline; 5-support seat. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] refer to Figure 2~Figure 4 , Figure 2 A three-dimensional diagram of a high-temperature powder heat exchanger 1 provided in an embodiment of the utility model is shown; Figure 3 A cross-sectional view of a high-temperature powder heat exchanger 1 provided in an embodiment of the utility model is shown; Figure 4 A cross-sectional view of a high-temperature powder heat exchanger 1 provided in an embodiment of the utility model is shown.

[0030] like Figure 2~Figure 4 As shown, the technical solution adopted by the utility model is a high-temperature powder heat exchanger 1, comprising a shell 2 and a heat exchange device, wherein the shell 2 includes a first direction ( Figure 1The shell 2 is provided with a feed port 20 at the top and a discharge port 21 at the bottom. Both the feed port 20 and the discharge port 21 are connected to the cavity. The heat exchange device is arranged in the shell 2, and includes a plate bundle assembly 30. The plate bundle assembly 30 includes a medium flow channel and a powder flow channel. The plate bundle assembly 30 includes a plurality of Figure 1 The heat exchange plates 31 are arranged at intervals (as shown in the X direction in the middle), and the first direction is perpendicular to the second direction. Two adjacent heat exchange plates 31 form a powder flow channel. Each heat exchange plate 31 extends along the first direction and is provided with a medium flow channel. The powder flow channel is connected with the feed port 20 and the discharge port 21 for circulating high-temperature powder. A water inlet tube 32 and a water outlet tube 33 are provided on one side of each heat exchange plate 31 along the second direction. Along the first direction, the water inlet tube 32 and the water outlet tube 33 are both arranged close to the discharge port 21, and the water outlet tube 33 is arranged above the water inlet tube 32.

[0031] The high-temperature powder heat exchanger 1 provided by the present application has a small water inlet and outlet pipe 33 on the heat exchange plate module fixed on the heat exchanger shell plate, and the entire plate bundle assembly 30 is fixed, so the shell 2 has a large expansion amount while the cooling water inside the heat exchange plate has a small expansion amount. When the expansion amount difference is greater than 5mm, there will be a risk of cracking, so the cooling water inlet and outlet pipes are as close as possible to reduce the difference in expansion amount between the two, thereby ensuring the safe use of the high-temperature powder heat exchanger 1. The plate bundle assembly 30 composed of multiple heat exchange plates 31 can change the number and gap of plates according to the working conditions, and can meet the cooling needs of different conditions.

[0032] Specifically, the shell 2 also includes an inlet pipe 23 and an outlet pipe 24. The inlet pipe 23 is respectively connected to the inlet pipes 32 of multiple heat exchange plates 31, and the outlet pipe 24 is respectively connected to the outlet pipes 33 of multiple heat exchange plates 3, for circulating cooling water in the medium channel.

[0033] In some embodiments, reference Figure 2~Figure 4 The housing 2 further includes a cooling water inlet pipeline and a cooling water outlet. The cooling water inlet pipeline is connected to a plurality of water inlet small tubes 32, and the cooling water outlet pipeline is connected to a plurality of water outlet small tubes 33, so that the external cooling water flows through the medium flow channel.

[0034] In some embodiments, reference Figure 2~Figure 4 The housing 2 also includes an inspection component. The inspection component includes a sight glass pipeline 40 and a small air blowing tube. The sight glass pipeline 40 is opened on one side along the second direction and is arranged corresponding to the positions of the water inlet tube 32 and the water outlet tube 33. The small air blowing tube is arranged inside the sight glass pipeline 40 to blow off the materials attached to the sight glass.

[0035] For example, in order to facilitate observation, sight glasses are installed at the upper and lower parts of the heat exchanger. Since the powder will block the sight glass, a small tube with a diameter of 10 mm is added to the inside of the sight glass for ventilation to blow away the material attached to the sight glass, so that the situation of the material inside the heat exchanger can be observed in real time.

[0036] In some embodiments, each heat exchange plate 31 is a pillow-type plate.

[0037] Illustratively, the present application utilizes the advantages of pillow-type plates, which have a smooth surface that is not easily sticky to dust or solid particles in the material. The plate bundle assembly 30 can change the number and spacing of plates according to working conditions, and can meet the cooling of flue gas in different conditions. For example, if the particles in the flue gas are large, the distance between the plates can be increased to prevent blockage.

[0038] In some embodiments, reference Figure 1 and Figure 2 An exhaust port 22 is also provided on the top of the shell 2.

[0039] For example, for the pneumatic conveying method, a large amount of pneumatically conveyed gas will enter the heat exchanger along with the material. While the heat exchanger is working, cold and dry air will also be introduced into the heat exchanger to take away moisture in the material, increase the fluidity of the material, and accelerate the cooling of the material. However, this part of cold and dry air will also increase the pressure in the cavity. The exhaust port 22 set at the top of the shell 2 will assist in decompressing the cavity and allow the gas to be quickly discharged.

[0040] In some embodiments, reference Figure 2~Figure 4 , the shell 2 is along the third direction ( Figure 1 On one side (as shown in the Y direction), a sight glass pipeline 40 and a small air blowing tube are provided near the feed port 20, and the first direction, the second direction and the third direction are perpendicular to each other.

[0041] Exemplarily, a sight glass pipeline 40 and a small air blowing tube are also provided at a position of the shell 2 near the feed port 20 to facilitate observation of the feeding condition of the high-temperature powder.

[0042] In some embodiments, reference Figure 2~Figure 4 The high-temperature powder heat exchanger 1 further includes a support base 5. The shell 2 is provided with support bases 5 on both sides along the third direction for fixing and installing the high-temperature powder heat exchanger 1.

[0043] Exemplarily, the high-temperature powder heat exchanger 1 is fixedly connected to the outside via a support base 5 .

[0044] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-temperature powder heat exchanger, characterized in that: include: The shell comprises a cavity extending along a first direction; a feed inlet is provided at the top of the shell and a discharge outlet is provided at the bottom; the feed inlet and the discharge outlet are both connected to the cavity; A heat exchange device, disposed in the shell, comprises a plate bundle assembly; the plate bundle assembly comprises a medium flow channel and a powder flow channel; The plate bundle assembly includes a plurality of heat exchange plates arranged at intervals along a second direction, the first direction being perpendicular to the second direction; two adjacent heat exchange plates enclose a powder flow channel; each of the heat exchange plates extends along the first direction and is provided with a medium flow channel; the powder flow channel is connected to the feed port and the discharge port for circulating high-temperature powder; Each heat exchange plate is provided with a water inlet tube and a water outlet tube on one side along the second direction; along the first direction, the water inlet tube and the water outlet tube are both arranged close to the discharge port, and the water outlet tube is arranged above the water inlet tube.

2. The high-temperature powder heat exchanger according to claim 1, characterized in that: The shell also includes a cooling water inlet pipeline and a cooling water outlet; the cooling water inlet pipeline is connected to the plurality of water inlet tubes, and the cooling water outlet pipeline is connected to the plurality of water outlet tubes, so as to allow external cooling water to flow through the medium flow channel.

3. The high-temperature powder heat exchanger according to claim 1, characterized in that: The shell also includes an inspection component; the inspection component includes a sight glass pipeline and an air blowing tube; the sight glass pipeline is opened on one side along the second direction and is arranged corresponding to the positions of the water inlet tube and the water outlet tube; the air blowing tube is arranged inside the sight glass pipeline to blow off the material attached to the sight glass.

4. The high-temperature powder heat exchanger according to claim 1, characterized in that: Each of the heat exchange plates is a pillow-type plate.

5. The high-temperature powder heat exchanger according to claim 1, characterized in that: The top of the shell is also provided with an exhaust port.

6. The high-temperature powder heat exchanger according to claim 3, characterized in that: The sight glass pipeline and the air blowing tube are provided on one side of the shell along the third direction and close to the feed port. The first direction, the second direction and the third direction are perpendicular to each other.

7. The high-temperature powder heat exchanger according to claim 1, characterized in that: It also includes a support seat; the support seat is provided on both sides of the shell along the third direction, and is used to fix the high-temperature powder heat exchanger.

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