Heat exchanger
By introducing adjustable regulators and distributors into the heat exchanger, the clogging problem of vertical fixed tube sheet heat exchangers was solved, improving the heat exchange efficiency and operational flexibility of petroleum resin production, and achieving stable heat exchange effect and easy maintenance.
Patent Information
- Application Number
- CN202422607024.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The existing vertical fixed tube sheet heat exchangers used in the production of petroleum resins cannot adjust the exposed length of the heat exchange tubes, resulting in tube head blockage and low heat exchange efficiency.
Design a heat exchanger including a tube box, a distributor, and heat exchange components. By setting adjustable adjustment elements on the heat exchange tubes, the axial length of the guide channel can be adjusted. Combined with the distributor to buffer the flow rate, a distribution channel is formed, which avoids tube head blockage and improves heat exchange efficiency.
It effectively prevents heat exchange tube blockage, improves heat exchange efficiency and operational flexibility, stabilizes the flow rate and temperature of the resin liquid, and enhances the maintainability and repairability of the equipment.
Smart Images
Figure CN223610651U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of heat exchangers, and particularly relates to a heat exchanger. BACKGROUND
[0002] In a production process of petroleum resin, resin liquid needs to be flashed to remove impurities. The flash heater is a device for heating the resin liquid and belongs to a shell-and-tube heat exchanger. The efficiency of the heat exchanger and the size of the operation flexibility play a crucial role in the subsequent flash process and the cleanliness of the resin product.
[0003] At present, most of the flash heaters for producing petroleum resin adopt vertical fixed tube plate heat exchangers. The exposed length of the heat exchange tube is flush with the surface of the tube plate under the premise of meeting the relevant specifications, and the liquid holdup cannot be adjusted, and the problem of pipe head blockage cannot be avoided.
[0004] Therefore, it is necessary to provide a heat exchanger to improve the heat exchange efficiency. SUMMARY
[0005] To solve the above technical problems, the application provides a heat exchanger.
[0006] The technical scheme adopted to achieve the purpose of the application is a heat exchanger, comprising:
[0007] A tube box is provided with an inner cavity and a liquid inlet;
[0008] At least one distributor is arranged in the inner cavity and connected with the inner cavity wall;
[0009] A heat exchange assembly comprises a plurality of heat exchange tubes and a plurality of adjusting members. The adjusting members are coaxially arranged with the heat exchange tubes, and the adjusting members are open at both ends along the axial direction. The adjusting members are connected with the corresponding heat exchange tubes and form a guide channel in communication. The adjusting members are adjustably arranged along the axial direction of the heat exchange tubes to adjust the axial length of the guide channel.
[0010] The liquid inlet, the at least one distributor and the adjusting member are sequentially arranged to form a distribution channel.
[0011] In some embodiments, the distributor is provided with two, which are a first distributor and a second distributor; the first distributor and the second distributor are arranged at intervals along the axial direction to form a distribution channel arranged in the axial direction.
[0012] In some embodiments, the first distributor comprises a first distribution member and a first connecting member. The first distribution member is arranged at an angle with the flow direction of the liquid inlet. The two ends of the first connecting member are respectively connected with the first distribution member and the inner cavity wall of the tube box.
[0013] The second distributor comprises a second distribution member and a second connecting member, the second distribution member is arranged at an angle with respect to the flow direction of the liquid inlet, and two ends of the second connecting member are connected with the second distribution member and the inner cavity wall of the tube box respectively.
[0014] In some embodiments, the first distribution member is provided with a plurality of first distribution holes arranged at intervals.
[0015] The second distribution member comprises a storage tank and a distribution pipe in communication with the storage tank, and the distribution pipe is arranged at intervals with the adjusting member.
[0016] In some embodiments, the storage tank is open on one side adjacent to the first distribution member, the storage tank comprises a tank bottom and a baffle arranged at the periphery of the tank bottom, and the distribution pipe is connected with and in communication with the tank bottom.
[0017] The projection of the first distribution member on the plane of the tank bottom is entirely located in the tank bottom.
[0018] In some embodiments, the adjusting member is an adjusting nut, the adjusting nut is provided with an internal thread, the upper end of the heat exchange pipe is provided with an external thread, and the adjusting nut is threadedly connected with the heat exchange pipe.
[0019] In some embodiments, the adjusting member is provided with a plurality of V-shaped grooves away from one end of the heat exchange pipe.
[0020] The inner wall of the adjusting member is provided with a guide portion.
[0021] In some embodiments, the number of the heat exchange pipes is the same as that of the adjusting members, the adjusting members are one-to-one correspondingly installed on the heat exchange pipes, and the heights of at least two adjusting members connected with the heat exchange pipes are the same.
[0022] In some embodiments, the heat exchanger further comprises a heat conduction portion arranged outside the tube box, and the heat conduction portion is provided with a heat conduction oil inlet and at least one heat conduction oil outlet.
[0023] In some embodiments, the heat exchanger further comprises a shell and a tube plate connected with the shell, and the tube plate is detachably connected with the tube box.
[0024] As can be seen from the above technical solution, this application provides a heat exchanger, which includes a tube box, at least one distributor, and a heat exchange assembly. The tube box has an inner cavity and a liquid inlet; at least one distributor is located in the inner cavity and connected to the inner cavity wall; the heat exchange assembly includes several heat exchange tubes and several adjusting components. The adjusting components are coaxially arranged with the heat exchange tubes, and both ends of the adjusting components are open along the axial direction. The adjusting components are connected to the corresponding heat exchange tubes and communicate to form a guide channel. The adjusting components are adjustable along the axial direction of the heat exchange tubes to adjust the axial length of the guide channel. The liquid inlet, at least one distributor, and adjusting components are arranged sequentially to form a distribution channel. The presence of at least one distributor on the tube box can slow down the flow rate of the resin liquid and increase the heating time between the resin liquid and the heat exchanger. In addition, the adjusting components on the heat exchange tubes allow the resin liquid to accumulate on the tube sheet and then be guided into the heat exchange tubes through the opening at one end of the adjusting components, thereby completing heat exchange with the heat transfer oil on the outer wall of the tube box and ensuring that the temperature of the resin liquid meets the process requirements. Compared to existing technologies, the exposed length of the heat exchange tubes is flush with the surface of the tube sheet, and the height of the adjusting component after connecting to the heat exchange tubes is higher than that of the tube sheet. This allows for adjustment of the liquid holdup, avoids tube head blockage, and improves heat exchange efficiency. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of a heat exchanger in one or more embodiments of this application.
[0026] Figure 2 for Figure 1 A schematic diagram of the internal structure of a heat exchanger.
[0027] Figure 3 for Figure 1 A top view of the first distributor of the heat exchanger.
[0028] Figure 4 for Figure 1 A top view of the second distributor of the heat exchanger.
[0029] Figure 5 for Figure 1 A schematic diagram of the structure connecting the adjustment component to the tube sheet.
[0030] Figure 6 for Figure 1 A schematic diagram of the structure connecting the adjustment component to the tube sheet from a certain perspective.
[0031] Figure 7 for Figure 1 A schematic diagram of the structure connecting the adjustment component to the tube sheet from another perspective.
[0032] Explanation of reference signs: 100 - heat exchanger, 110 - tube box, 111 - inner cavity, 112 - liquid inlet, 120 - distributor, 121 - first distributor, 1211 - first distribution piece, 1212 - first connecting piece, 1213 - first distribution hole, 122 - second distributor, 1221 - second distribution piece, 1222 - second connecting piece, 1223 - storage box, 1224 - distribution pipe, 1225 - box bottom, 1226 - baffle, 130 - heat exchange assembly, 131 - heat exchange pipe, 132 - adjusting piece, 1321 - V-shaped groove, 140 - heat conducting oil inlet, 141 - first heat conducting oil outlet, 142 - second heat conducting oil outlet, 150 - shell, 160 - heat conduction part, 170 - tube plate. DETAILED DESCRIPTION
[0033] In order to make the skilled person in the technical field to which the present application belongs more clearly understand the present application, the technical solutions of the present application will be described in detail below with specific embodiments in combination with the accompanying drawings.
[0034] In the embodiments of the present application, as shown in Figure 1 and Figure 2 , a heat exchanger 100 includes a tube box 110, at least one distributor 120, and a heat exchange assembly 130. The tube box 110 is provided with an inner cavity 111 and a liquid inlet 112. The at least one distributor 120 is arranged in the inner cavity 111 and connected with the wall of the inner cavity 111. The heat exchange assembly 130 includes a plurality of heat exchange pipes 131 and a plurality of adjusting pieces 132. The adjusting pieces 132 are coaxially arranged with the heat exchange pipes 131, and both ends of the adjusting pieces 132 along the axial direction are open. The adjusting pieces 132 are connected with the corresponding heat exchange pipes 131 and form a guide channel in communication. The adjusting pieces 132 are adjustably arranged along the axial direction of the heat exchange pipes 131 to adjust the axial length of the guide channel. The liquid inlet 112, the at least one distributor 120, and the adjusting pieces 132 are sequentially arranged to form a distribution channel.
[0035] As shown in Figure 1 and Figure 2 , the tube box 110 of the heat exchanger 100 is provided with an inner cavity 111, and the distributor 120 is arranged in the inner cavity 111. When the fluid enters the inner cavity 111 through the liquid inlet 112 of the tube box 110, it can be buffered through the at least one distributor 120. In addition, the flow rate of the resin liquid can be slowed down, and the heating time of the resin liquid with the heat exchanger 100 can be increased.
[0036] As shown in Figure 1 and Figure 2As shown, the heat exchange assembly 130 includes a plurality of heat exchange tubes 131 and a plurality of adjusting members 132, wherein the number of the heat exchange tubes 131 can be more than the number of the adjusting members 132, or the number of the heat exchange tubes 131 can be equal to the number of the adjusting members 132. In some embodiments, the number of the heat exchange tubes 131 is equal to the number of the adjusting members 132, and the adjusting members 132 are arranged on the heat exchange tubes 131, and the adjusting members 132 can adjust the length of the guide channel. The resin liquid flows to the tube sheet 170 of the heat exchanger 100 through at least one distributor 120, and after accumulating a certain height on the tube sheet 170, the resin liquid can flow into the heat exchange tubes 131 through the opening at one end of the adjusting member 132, so as to complete heat exchange with the heat transfer oil on the outer wall of the tube box 110, so that the temperature of the resin liquid reaches the process requirement.
[0037] As shown in Figure 1 and Figure 2 In some embodiments, the axial length of the adjusting member 132 and the heat exchange tube 131 can be adjusted by the adjusting member 132. In the case of a large amount of resin liquid demand, the height of the adjusting nut can be adjusted to the normal position, and the height of all adjusting members 132 can be adjusted to be flush. In the case of a small amount of resin liquid demand, the height of part of the adjusting nut can be adjusted to be higher, and the height of part of the adjusting nut can be normal. Thus, the demand of the entire resin liquid is ensured, and the service life of the adjusting member 132 and the heat exchange tube 131 is improved.
[0038] Therefore, at least one distributor 120 is arranged on the tube box 110, which can slow down the flow rate of the resin liquid and increase the heating time of the resin liquid with the heat exchanger 100. In addition, the adjusting member 132 is arranged on the heat exchange tube 131, and after the resin liquid accumulates on the tube sheet 170, the resin liquid can flow into the heat exchange tube 131 through the opening at one end of the adjusting member 132, so as to complete heat exchange with the heat transfer oil on the outer wall of the tube box 110, so that the temperature of the resin liquid reaches the process requirement.
[0039] As shown in Figure 1 and Figure 2 In some embodiments, the distributor 120 is provided with two, which are a first distributor 121 and a second distributor 122. The first distributor 121 and the second distributor 122 are arranged along the axial direction to form an axially arranged distribution channel. That is, the resin liquid flowing into the liquid inlet 112 of the tube box 110 can be buffered by the first distributor 121 and the second distributor 122, so as to slow down the flow rate of the resin liquid and increase the heating time of the resin liquid with the heat exchanger 100.
[0040] As shown in Figure 3 , Figure 1 and Figure 2As shown in the drawings, in some embodiments, the first distributor 121 comprises a first distribution member 1211 and a first connecting member 1212, the first distribution member 1211 is arranged at an angle with respect to the flow direction of the liquid inlet 112, and the two ends of the first connecting member 1212 are connected with the first distribution member 1211 and the inner cavity 111 wall of the pipe box 110 respectively; the first distribution member 1211 can be a plate member, which can be a rectangular plate, a circular plate or an oval plate, and the shape of the first distribution member 1211 is not specifically limited. In some embodiments, the first distribution member 1211 is a circular plate, and the first distribution member 1211 is arranged vertically with respect to the flow direction of the liquid inlet 112, so that the resin liquid passing through the first distribution member 1211 can play a buffering role.
[0041] As shown in the drawings, Figure 3 , Figure 1 and Figure 2 , in some embodiments, the first distribution member 1211 is provided with a plurality of first distribution holes 1213 arranged at intervals; the first distribution holes 1213 can be arranged in a circular array along the first distribution member 1211. In some embodiments, the first distribution member 1211 is a circular plate, and the first distribution holes 1213 are arranged in a circular array along the circular plate. This ensures that the resin liquid can flow uniformly after being buffered by the first distribution member 1211.
[0042] As shown in the drawings, Figure 4 , Figure 1 and Figure 2 , in some embodiments, the second distributor 122 comprises a second distribution member 1221 and a second connecting member 1222, the second distribution member 1221 is arranged at an angle with respect to the flow direction of the liquid inlet 112, and the two ends of the second connecting member 1222 are connected with the second distribution member 1221 and the inner cavity 111 wall of the pipe box 110 respectively. The second distribution member 1221 is arranged at an angle with respect to the flow direction of the liquid inlet 112, which can buffer the liquid of the liquid inlet 112; in some embodiments, the second distribution member 1221 is arranged vertically with respect to the flow direction of the liquid inlet 112, which ensures that the resin liquid passing through the first distribution member 1211 can play a role of primary buffering; after the first distribution member 1211 flows to the second distribution member 1221, the second distribution member 1221 plays a role of secondary buffering.
[0043] As shown in the drawings, Figure 4 , Figure 1 and Figure 2 , in some embodiments, the second distribution member 1221 comprises a storage tank 1223 and a distribution pipe 1224 in communication with the storage tank 1223, and the distribution pipe 1224 is arranged at intervals with the adjusting member 132. That is, the fluid buffered by the first distribution member 1211 can fall into the storage tank 1223 through the first distribution hole 1213 for storage, and then the fluid in the storage tank 1223 can fall onto the tube plate 170 through the distribution pipe 1224 for the purpose of buffering.
[0044] AsFigure 4 , Figure 1 and Figure 2 As shown, in some embodiments, the storage box 1223 has an open side adjacent to the first distribution member 1211. The storage box 1223 includes a box bottom 1225 and a baffle 1226 disposed around the box bottom 1225. The distribution pipe 1224 is connected to and communicates with the box bottom 1225. The box bottom 1225 and the baffle 1226 of the storage box 1223 form a storage structure, that is, the fluid buffered by the first distribution member 1211 can fall into the storage box 1223 through the first distribution hole 1213 for storage, and then the fluid in the storage box 1223 can fall onto the tube sheet 170 through the distribution pipe 1224, which serves the purpose of buffering.
[0045] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, to ensure that more fluid flows into the storage tank 1223 from the first distribution member 1211, the projection of the first distribution member 1211 onto the plane of the tank bottom 1225 is entirely within the tank bottom 1225. In other embodiments, the first distribution member 1211 is parallel and coaxially arranged with the tank bottom 1225, and the cross-sectional area of the first distribution member 1211 is smaller than the cross-sectional area of the tank bottom 1225. Most of the fluid flowing down from the inlet 112 through the first distribution member 1211 can fall into the storage tank 1223 through the first distribution hole 1213, and a very small portion of the fluid can flow into the storage tank 1223 through the edge of the first distribution member 1211, ensuring that as much fluid as possible flows into the storage tank 1223 from the inlet 112.
[0046] In some implementations, the adjusting member 132 is threadedly connected to the heat exchange tube 131, ensuring that the adjusting member 132 can axially guide the axial length of the channel on the heat exchange tube 131. In some embodiments, the adjusting member 132 is an adjusting nut with an internal thread, and the upper end of the heat exchange tube 131 has an external thread, with the adjusting nut threadedly connected to the heat exchange tube 131.
[0047] like Figure 7 , Figure 1 and Figure 1 As shown, in order to further control the flow rate of the resin liquid and avoid the generation of eddies, in some embodiments, the end of the adjusting member 132 away from the heat exchange tube 131 is provided with a plurality of V-shaped grooves 1321; wherein the groove tip angle of the V-shaped groove 1321 is 30°~90°, and can be 30°, 40°, 51°, 57°, 60°, 65°, 75°, 80° or 90°.
[0048] In other embodiments, in order to ensure that the resin liquid can flow into the heat exchange pipe 131 through the adjusting piece 132, the inner wall of the adjusting piece 132 is provided with a guide part, which further ensures that the resin liquid can flow into the heat exchange pipe 131 better.
[0049] In some embodiments, the number of the heat exchange pipe 131 is the same as that of the adjusting piece 132, the adjusting piece 132 is installed in one-to-one correspondence with the heat exchange pipe 131, and the height of the adjusting piece 132 after being connected with the heat exchange pipe 131 is the same, that is, the height of the adjusting piece 132 after being connected with the heat exchange pipe 131 can be adjusted according to the demand of the resin liquid, and on the basis of ensuring the demand of the resin liquid, the service life of the adjusting piece 132 and the heat exchange pipe 131 is improved.
[0050] As shown in Figure 1 some embodiments, the heat exchanger 100 further comprises a heat conduction part 160 arranged outside the pipe box 110, and the heat conduction part 160 is provided with a heat conduction oil inlet 140 and at least one heat conduction oil outlet. That is, the heat conduction oil entering through the heat conduction oil inlet 140 can flow through the heat conduction part 160 and then exchange heat with the resin liquid in the pipe box 110, so that the temperature of the resin liquid reaches the process requirement. The heat conduction oil outlet can be provided with two, which are a first heat conduction oil outlet 141 and a second heat conduction oil outlet 142. The first heat conduction oil outlet 141 is used for normal heat exchange of the heat conduction oil, and the second heat conduction oil outlet 142 can be used for maintenance or for discharging all the heat conduction oil in the heat conduction part 160.
[0051] As shown in Figure 2 some embodiments, the height of the baffle 1226 is flush with the axis of the first heat conduction oil outlet 141, which can ensure that the heat conduction oil can maximize the heat exchange with the resin liquid in the storage tank 1223, and the heat exchange efficiency is improved.
[0052] As shown in and some embodiments, the heat exchanger 100 further comprises a tube plate 170 connected with the shell 150, and the tube plate 170 is detachably connected with the pipe box 110. In some embodiments, the tube plate 170 can be connected with the shell 150 in a welding manner, and the tube plate 170 is detachably connected with the pipe box 110, which facilitates the maintenance in the later period and improves the operability.
[0053] Through the above embodiments, the application has the following advantages or benefits:
[0054] 1) The application is suitable for the flash heating device for producing petroleum resin products, has certain competitiveness in the market of the petroleum resin production field, improves the efficiency of the flash heating device, increases the operation flexibility, effectively prevents the heat exchange pipe 131 from being blocked, and is easy to maintain and repair.
[0055] 2) The application can stabilize the flow rate of the resin liquid, increase its residence time, and improve the efficiency of the flash evaporator under the premise of meeting the process operation; at the same time, due to the adjustable height of the adjusting part 132 after being connected with the heat exchange pipe 131, the liquid holding capacity of the tube plate 170 is controllable, thereby effectively eliminating the influence of operation fluctuation on the temperature of the resin liquid, and achieving effective temperature control effect. In addition, this structure can prevent the heat exchange pipe 131 from being blocked and is easy to replace during inspection and maintenance.
[0056] Although the preferred embodiments of the application have been described, those skilled in the art who are familiar with the basic inventive concept can make additional changes and modifications to these embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the application.
[0057] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.
Claims
1. A heat exchanger, characterized by, The application relates to a heat exchanger. The heat exchanger comprises a tube box provided with an inner cavity and a liquid inlet; at least one distributor arranged in the inner cavity and connected with the inner cavity wall; and a heat exchange assembly comprising a plurality of heat exchange tubes and a plurality of adjusting members, wherein the adjusting members are coaxially arranged with the heat exchange tubes, the adjusting members are open at both ends along the axial direction, the adjusting members are connected with the corresponding heat exchange tubes and form guiding channels in communication, and the adjusting members are adjustably arranged along the axial direction of the heat exchange tubes to adjust the axial length of the guiding channels. The liquid inlet, the at least one distributor and the adjusting members are sequentially arranged to form a distribution channel. The distributor is provided with two first and second distributors which are arranged at intervals along the axial direction to form a distribution channel arranged in the axial direction. The first distributor comprises a first distribution member and a first connecting member, the first distribution member is arranged at an angle with the flow direction of the liquid inlet, and the two ends of the first connecting member are respectively connected with the first distribution member and the inner cavity wall of the tube box.
2. The heat exchanger of claim 1, wherein The second distributor comprises a second distribution member and a second connecting member, the second distribution member is arranged at an angle with the flow direction of the liquid inlet, and the two ends of the second connecting member are respectively connected with the second distribution member and the inner cavity wall of the tube box.
3. The heat exchanger of claim 2, wherein The first distribution member is provided with a plurality of first distribution holes arranged at intervals. The second distribution member comprises a storage box and a distribution pipe in communication with the storage box, and the distribution pipe is arranged at intervals with the adjusting members.
4. The heat exchanger of claim 3, wherein The storage box is open on one side adjacent to the first distribution member, the storage box comprises a box bottom and a baffle arranged at the periphery of the box bottom, the distribution pipe is connected with and in communication with the box bottom. The projection of the first distribution member on the plane of the box bottom is located in the box bottom.
5. The heat exchanger of claim 4, wherein The adjusting member is an adjusting nut provided with an inner thread, the upper end of the heat exchange tube is provided with an outer thread, and the adjusting nut is threadedly connected with the heat exchange tube. The end of the adjusting member away from the heat exchange tube is provided with a plurality of V-shaped grooves.
6. The heat exchanger according to any one of claims 1-5, characterized in that The inner wall of the adjusting member is provided with a guiding portion.
7. The heat exchanger according to any one of claims 1-5, characterized in that The number of the heat exchange tubes is the same as that of the adjusting members, the adjusting members are one-to-one correspondingly mounted on the heat exchange tubes, and the heights of the adjusting members after being connected with the heat exchange tubes are the same. The heat exchanger further comprises a heat conduction portion arranged outside the tube box, the heat conduction portion is provided with a heat conduction oil inlet and at least one heat conduction oil outlet.
8. The heat exchanger according to any one of claims 1 to 5, characterized in that The heat exchanger further comprises a shell and a tube plate connected with the shell, and the tube plate is detachably connected with the tube box.
9. The heat exchanger according to any one of claims 1-5, characterized in that 10. The heat exchanger according to any one of claims 1-5, characterized in that