Fabricated evaporator for low-temperature multi-effect seawater desalination

Abstract

The utility model provides an assembly type evaporator for low-temperature multi-effect sea water desalination, which comprises an evaporation barrel and two communication end covers, the evaporation barrel comprises a plurality of assembly barrel bodies, the assembly barrel bodies are connected through locking components, and the assembly barrel bodies are connected through the locking components. And the two communicating end covers are fixedly connected to the end openings of the assembly cylinder bodies at the two ends of the evaporation cylinder body through bolts. When the evaporation space of the evaporator needs to be increased, the number of the state cylinders can be increased, then the openings of the assembly cylinders are in butt joint, the butt joint states of the adjacent assembly cylinders are locked and positioned through the locking assemblies, assembly can be completed, and the evaporation space of the evaporator is enlarged.

Description

Technical Field

[0001] This utility model belongs to the field of assembled evaporators, and in particular relates to an assembled evaporator for low-temperature multi-effect seawater desalination. Background Technology

[0002] Currently, the manufacturing and assembly of large-scale low-temperature multi-effect seawater desalination evaporators involves: (1) machining the shell of a single-effect evaporator and then directly installing reinforcing rings, saddles, manholes, and various connecting pipe openings on the shell in a horizontal state; (2) machining tube sheet holes on each tube sheet; assembling the multiple tube sheets with the tube sheet support frame and welding them together in the shell to form a tube sheet support assembly; (3) installing a seawater spray assembly in the evaporator shell; (4) installing tube rings in the tube sheet holes and then inserting heat exchange tubes; installing a smear plate at one end of the evaporator shell; and (5) performing heat preservation treatment on the evaporator shell. However, since the evaporator shell is fixed, it is not convenient to assemble and extend the evaporator shell as needed when additional space is required for evaporation processing. Summary of the Invention

[0003] In view of this, the present invention aims to propose a prefabricated evaporator for low-temperature multi-effect seawater desalination, so as to solve the problem that the evaporator cylinder is fixed and it is not convenient to assemble and extend the evaporator cylinder as needed when it is necessary to increase the space for evaporation treatment.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A prefabricated evaporator for low-temperature multi-effect seawater desalination includes an evaporation cylinder and two connecting end caps. The evaporation cylinder includes multiple prefabricated cylinders connected to each other by a locking assembly. The two connecting end caps are fixedly connected to the prefabricated cylinder ports at both ends of the evaporation cylinder by bolts. The evaporation cylinder also includes a heat exchange assembly, which includes multiple heat exchange tubes, each of which is disposed within a plurality of prefabricated cylinders.

[0006] Furthermore, the heat exchange assembly also includes: multiple pairs of partition plates, which are fixedly connected to the interiors of multiple assembly cylinders, and two partition plates of the same pair are fixedly connected to the two ends of the same assembly cylinder, and the heat exchange tube inside the assembly cylinder extends through the two partition plates to the two ends of the assembly cylinder.

[0007] Furthermore, it also includes multiple spraying components, which are respectively disposed inside the multiple assembly cylinders and located above the heat exchange tubes. Each spraying component includes:

[0008] A connecting pipe is fixedly connected to the top of the inside of the assembled cylinder, and a spraying disc is fixedly connected to its bottom end.

[0009] Furthermore, each of the multiple assembled cylinders has a drain pipe fixedly connected to its bottom, and a steam collection pipe fixedly connected to its top.

[0010] Furthermore, the locking assembly includes: multiple pairs of locking seats, which are respectively fixedly connected to the surfaces of multiple assembly cylinders. Two locking seats in the same pair are symmetrically fixedly connected to both sides of the same assembly cylinder. Each locking seat has an installation groove and a docking groove at both ends. A docking rack is slidably inserted into the installation groove. Two insertion slots are provided in the docking groove. A connecting frame is slidably inserted into the two insertion slots. A support shaft is unidirectionally rotatably connected to the connecting frame. A gear is fixedly sleeved on the surface of the support shaft. An adjusting screw is threadedly connected to the connecting frame. The adjusting screw is rotatably connected to the surface of the locking seat. During the docking of adjacent assembly cylinders, the docking rack is inserted into the insertion slot and meshes with the gear.

[0011] Furthermore, the support shaft and the connecting frame are connected by a one-way bearing for unidirectional rotation.

[0012] Furthermore, an adjustment knob is fixedly connected to the bottom end of the support shaft.

[0013] Furthermore, a limiting groove is provided on the inner wall of the mounting groove, and a limiting block is slidably disposed in the limiting groove, the limiting block being fixedly connected to the surface of the mating rack.

[0014] Compared with existing technologies, the prefabricated evaporator for low-temperature multi-effect seawater desalination described in this utility model has the following advantages:

[0015] (1) When it is necessary to increase the evaporation space of the evaporator, the present invention can increase the number of state cylinders, and then connect the openings of the assembly cylinders. The assembly can be completed by locking the connection state of the adjacent assembly cylinders through the locking component, thereby expanding the evaporation space of the evaporator.

[0016] (2) In the process of docking adjacent assembly cylinders, the docking rack is pushed into the insertion slot. The docking rack will mesh with the gear. Since the support shaft can only rotate in one direction, after the docking, the docking rack will be limited by the gear and cannot be pulled out from the insertion slot, thus forming a self-locking mechanism. This locks the docking state of two adjacent assembly cylinders, which is convenient and quick. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the first overall structure of a prefabricated evaporator for low-temperature multi-effect seawater desalination according to an embodiment of the present invention;

[0019] Figure 2 This is an enlarged view of part A in section 1;

[0020] Figure 3 This is a cross-sectional view of the assembly cylinder of a prefabricated evaporator for low-temperature multi-effect seawater desalination according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the locking seat of a prefabricated evaporator for low-temperature multi-effect seawater desalination according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the connecting frame of a prefabricated evaporator for low-temperature multi-effect seawater desalination according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the second overall structure of a prefabricated evaporator for low-temperature multi-effect seawater desalination according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Assembly cylinder; 2-Connecting end cap; 3-Heat exchange tube; 4-Divider plate; 5-Connecting pipe; 6-Spraying disc; 7-Drain pipe; 8-Steam collection pipe; 9-Locking seat; 10-Installation groove; 11-Docking groove; 12-Plug-in groove; 13-Connecting frame; 14-Support shaft; 15-Gear; 16-Adjusting screw; 17-One-way bearing; 18-Adjusting knob; 19-Limiting groove; 20-Limiting block. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 6 As shown, in one embodiment, a prefabricated evaporator for low-temperature multi-effect seawater desalination includes an evaporation cylinder and two connecting end caps 2. The evaporation cylinder includes multiple prefabricated cylinders 1, which are connected by a locking assembly. The two connecting end caps 2 are fixedly connected to the ports of the prefabricated cylinders 1 at both ends of the evaporation cylinder by bolts. The evaporation cylinder also includes a heat exchange assembly, which includes multiple heat exchange tubes 3, which are respectively disposed in the multiple prefabricated cylinders 1.

[0031] It should be understood that when it is necessary to increase the evaporation space of the evaporator, the number of state cylinders can be increased, and then the openings of the assembly cylinder 1 can be connected. The connection state of the adjacent assembly cylinders 1 can be locked and positioned by the locking component to complete the assembly, thereby expanding the evaporation space of the evaporator and meeting more evaporation needs.

[0032] After connecting multiple assembly cylinders 1, two connecting end caps 2 are respectively placed at both ends of the evaporation cylinder, and the two connecting end caps 2 are respectively fixedly connected to the ports of the assembly cylinder 1 at both ends of the evaporation cylinder by bolts, thereby forming an expanded evaporation space after assembly.

[0033] The heat exchange assembly also includes: multiple pairs of partition plates 4, which are fixedly connected to the inside of multiple assembly cylinders 1 respectively, and two partition plates 4 of the same pair are fixedly connected to the two ends inside the same assembly cylinder 1 respectively, and the two ends of the heat exchange tube 3 inside the assembly cylinder 1 extend through the two partition plates 4 to the two ends of the assembly cylinder 1.

[0034] It should be understood that the assembly cylinder 1 is divided into a heat exchange chamber 101 and two connecting chambers 102 by two partition plates 4; adjacent assembly cylinders 1 are connected through the connecting chambers 102, and the heat exchange tubes 3 of different assembly cylinders 1 are connected by the connecting chambers 102.

[0035] A prefabricated evaporator for low-temperature multi-effect seawater desalination also includes multiple spraying components, which are respectively arranged inside multiple assembly cylinders 1 and located above heat exchange tubes 3. Each spraying component includes: a connecting pipe 5, which is fixedly connected to the top of the inside of the assembly cylinder 1 and has a spraying plate 6 fixedly connected to its bottom; a drain pipe 7 is fixedly connected to the bottom of each of the multiple assembly cylinders 1, and a steam collection pipe 8 is fixedly connected to the top of each of the multiple assembly cylinders 1.

[0036] It should be understood that seawater is introduced into the spray plate 6 through the connecting pipe 5, and the seawater is sprayed into the heat exchange tube 3 through the spray plate 6. The heat source steam in the heat exchange tube 3 will transfer heat to the seawater, and the seawater will absorb heat to form steam. The steam is collected through the steam collection pipe 8 and distributed to other evaporators by the external distribution pipe as a heat source.

[0037] Drain pipe 7 is used to discharge unevaporated seawater, which is then diverted by an external branch pipe to other evaporators for continued spray evaporation.

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, in one embodiment, the locking assembly includes multiple pairs of locking seats 9, which are fixedly connected to the surfaces of multiple assembly cylinders 1 respectively. Two locking seats 9 of the same pair are symmetrically fixedly connected to both sides of the same assembly cylinder 1. The two ends of the locking seats 9 are respectively provided with mounting grooves 10 and docking grooves 11. A docking rack 21 is slidably inserted into the mounting groove 10. Two insertion grooves 12 are provided in the docking groove 11. A connecting frame 13 is slidably inserted into the two insertion grooves 12. A support shaft 14 is unidirectionally rotatably connected to the connecting frame 13. A gear 15 is fixedly sleeved on the surface of the support shaft 14. An adjusting screw 16 is threadedly connected to the connecting frame 13. The adjusting screw 16 is rotatably connected to the surface of the locking seat 9.

[0039] During the docking process of adjacent assembly cylinders 1, the docking rack 21 is inserted into the insertion slot 12 and meshes with the gear 15.

[0040] It should be understood that during the docking of adjacent assembly cylinders 1, the docking rack 21 is pushed into the insertion slot 12, and the docking rack 21 will mesh with the gear 15. Since the support shaft 14 can only rotate in one direction, after the docking, the docking rack 21 will be limited by the gear 15 and cannot be pulled out from the insertion slot 12, thus forming a self-locking mechanism. This locks the docking state of the two adjacent assembly cylinders 1, which is convenient and quick.

[0041] When it is necessary to separate adjacent assembly cylinders 1, rotate the adjusting screw 16. The adjusting screw 16 will drive the connecting bracket 13 to move. The connecting bracket 13 will drive the gear 15 away from the docking rack 21, canceling the engagement. This will cancel the limit on the docking rack 21, thereby canceling the locking of the connection state of the two adjacent assembly cylinders 1.

[0042] Specifically, the support shaft 14 and the connecting frame 13 are connected by a one-way bearing 17 for unidirectional rotation.

[0043] like Figure 1 , Figure 2 and Figure 5 As shown, in one embodiment, an adjustment knob 18 is fixedly connected to the bottom end of the support shaft 14. It should be understood that by setting the adjustment knob 18, the adjustment knob 18 can be turned with a wrench, thereby driving the support shaft 14 and gear 15 to rotate, further pulling the docking rack 21, so as to realize the docking and fastening of two adjacent assembly cylinders 1.

[0044] like Figure 1 , Figure 2 and Figure 4As shown, in one embodiment, a limiting groove 19 is also formed on the inner wall of the mounting groove 10, and a limiting block 20 is slidably disposed in the limiting groove 19. The limiting block 20 is fixedly connected to the surface of the mating rack 21. It should be understood that by setting the limiting block 20, it is convenient for the operator to push the mating rack 21 by moving the limiting block 20. In the idle state, the mating rack 21 can be retracted into the mounting groove 10 by moving the limiting block 20.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-temperature multi-effect seawater desalination assembly type evaporator comprising an evaporation cylinder and two communication end covers (2), characterized in that: The utility model provides an evaporating cylinder, which comprises an evaporating cylinder body and two communication end covers (2), the evaporating cylinder body comprises a plurality of assembly cylinder bodies (1), the plurality of assembly cylinder bodies (1) are connected through a locking assembly, and the two communication end covers (2) are fixedly connected at the ports of the assembly cylinder bodies (1) at the two ends of the evaporating cylinder body through bolts; The utility model also comprises a heat exchange assembly, the heat exchange assembly comprises a plurality of heat exchange pipes (3), and the plurality of heat exchange pipes (3) are arranged in the plurality of assembly cylinder bodies (1) respectively.

2. The low-temperature multi-effect evaporator of claim 1, wherein: The heat exchange assembly further comprises: a plurality of pairs of partition plates (4), the plurality of pairs of partition plates (4) are fixedly connected in the plurality of assembly cylinder bodies (1) respectively, the two partition plates (4) in the same pair are fixedly connected at the two ends in the same assembly cylinder body (1) respectively, and the two ends of the heat exchange pipes (3) in the assembly cylinder body (1) extend to the two ends of the assembly cylinder body (1) after penetrating the two partition plates (4) in the same pair.

3. The low-temperature multi-effect evaporator of claim 1, wherein: The utility model also comprises a plurality of spraying assemblies, the plurality of spraying assemblies are arranged in the plurality of assembly cylinder bodies (1) respectively and are located above the heat exchange pipes (3), and the spraying assembly comprises: a communication pipe (5) fixedly communicated in the top end of the assembly cylinder body (1) and provided with a spraying disc (6) fixedly communicated at the bottom end.

4. The low-temperature multi-effect evaporator of claim 1, wherein: The bottom of the plurality of assembly cylinder bodies (1) is fixedly communicated with a drain pipe (7), and the top of the plurality of assembly cylinder bodies (1) is also fixedly communicated with a steam collection pipe (8).

5. An evaporator according to any one of claims 1 to 4, characterized in that: The locking assembly comprises: a plurality of pairs of locking seats (9), the plurality of pairs of locking seats (9) are fixedly connected on the surfaces of the plurality of assembly cylinder bodies (1) respectively, the two locking seats (9) in the same pair are fixedly connected on the two sides of the same assembly cylinder body (1) symmetrically, the two ends of the locking seat (9) are provided with an installation groove (10) and a butt joint groove (11) respectively, a butt joint rack (21) is slidably inserted into the installation groove (10), two insertion grooves (12) are formed in the butt joint groove (11), a connecting frame (13) is slidably inserted into the two insertion grooves (12), a support shaft (14) is rotatably connected to the connecting frame (13) in one direction, a gear (15) is fixedly sleeved on the surface of the support shaft (14), an adjusting screw rod (16) is threadedly connected to the connecting frame (13), and the adjusting screw rod (16) is rotatably connected to the surface of the locking seat (9); In the butt joint process of the adjacent assembly cylinder bodies (1), the butt joint rack (21) is inserted into the insertion groove (12) and meshes with the gear (15).

6. The low-temperature multi-effect evaporator of claim 5, wherein: The support shaft (14) and the connecting frame (13) are rotatably connected in one direction through a one-way bearing (17).

7. The low-temperature multi-effect evaporator assembly for seawater desalination according to claim 6, characterized in that: The bottom end of the support shaft (14) is fixedly connected with an adjusting knob (18).

8. The low-temperature multi-effect evaporator assembly for seawater desalination according to claim 7, characterized in that: A limiting groove (19) is further formed in the inner wall of the installation groove (10), a limiting block (20) is slidably arranged in the limiting groove (19), and the limiting block (20) is fixedly connected to the surface of the butt joint rack (21).

Images