Duplex tubular cooler

Abstract

The utility model discloses a duplex tubular cooler. The duplex tubular cooler comprises a cooling mechanism and a reversing mechanism, the cooling mechanism comprises shells and connecting pipelines, the two shells are fixedly connected through connecting plates which are symmetrically distributed front and back, the lower side of the shell at the lower end is fixedly connected with bases which are symmetrically distributed front and back, and the connecting pipelines are arranged at the front and back ends of the shells; the reversing mechanism comprises a rotating shaft, three-way valve bodies, eccentric blocking plates and second end covers, the three-way valve bodies are connected between the two connecting pipelines which are vertically adjacent front and back through bolts, the second end covers are connected to the opposite inner side faces of the two three-way valve bodies through bolts, and the rotating shaft is rotationally connected between the two second end covers; according to the duplex tubular cooler, reversing of the three-way reversing valve is achieved through the cam eccentric type blocking plate, positioning indication is added, reversing is convenient, meanwhile, the requirement for the length machining precision of the blocking plate is low, and machining is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a double-tube cooler. Background Technique

[0002] Shell-and-tube coolers are widely used in the thin oil lubrication systems and hydraulic systems of industrial sectors such as metallurgy, mining, cement, electric power, light industry, food, chemical industry, and papermaking to cool lubricating oil, hydraulic oil, etc. in the system. Shell-and-tube coolers, also called shell-and-tube coolers, are divided into a tube side and a shell side. The path of the liquid flowing inside the tube is the tube side, and the path of the liquid flowing outside the tube is the shell side. The wall surface of the tube bundle is the heat transfer surface, which has the advantages of small product volume and large heat exchange area.

[0003] Double-tube coolers usually consist of two oil coolers with the same area and a three-way valve device. One is in operation and the other is in standby. Each cooler can bear the cooling load of the entire system and can be repaired during the operation of the unit. However, when the double-tube cooler is commutated, it is difficult for personnel to quickly confirm whether the commutation is completed and whether there is a gap leading to oil leakage after commutation. At the same time, the width and length processing accuracy requirements of the commutating valve plate of the three-way valve are relatively high during processing. For this reason, we propose a double-tube cooler. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a double-tube cooler. The commutation of the three-way commutation valve is realized through a cam eccentric plug plate, and positioning indication is increased to facilitate commutation. At the same time, the processing accuracy requirements for the length of the plug plate are relatively low, which is convenient for processing, and the problems in the background technique can be effectively solved.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A double-tube cooler, comprising a cooling mechanism and a commutation mechanism;

[0006] Cooling mechanism: It includes a housing and connecting pipes. The two housings are fixedly connected by connecting plates symmetrically distributed front and back. The lower side of the lower housing is fixedly connected with bases symmetrically distributed front and back. Connecting pipes are provided at both front and back ends of the housing;

[0007] Reversing mechanism: It includes a rotating shaft, a three-way valve body, an eccentric plug plate and end cover two. The three-way valve body is bolted between two vertically adjacent connecting pipes before and after. The opposite inner sides of the two three-way valve bodies are bolted with end cover two. A rotating shaft is rotatably connected between the two end cover two. The rotating shaft passes through the avoidance openings in the middle of the two connecting plates. Eccentric plug plates are fixedly connected to both the front and rear sides of the rotating shaft. The outer arc surfaces of the eccentric plug plates are respectively slidably connected to the inner walls of the adjacent three-way valve bodies. The reversing of the three-way reversing valve is realized through the cam eccentric plug plates, adding positioning indication for easy reversing. At the same time, the processing accuracy requirements for the length of the plug plates are relatively low, which is convenient for processing.

[0008] Furthermore, the reversing mechanism further includes positioning plates. Positioning plates are fixedly connected to both the front and rear ends of the rotating shaft. The positioning plates are respectively located between the adjacent end cover two and the connecting plates. The positioning plates correspond to the front and rear positions of the adjacent eccentric plug plates respectively, which is convenient for maintenance personnel to know the current position of the eccentric plug plates.

[0009] Furthermore, the reversing mechanism further includes limiting plates. Limiting plates are fixedly connected to both the upper and lower ends of the opposite inner sides of the two end cover two. The sides of the upper limiting plates are respectively in contact with the sides of the adjacent positioning plates, which is convenient for accurate reversing.

[0010] Furthermore, a rotating frame is provided in the middle of the rotating shaft to realize the rotation of the rotating shaft.

[0011] Furthermore, the middle part of the three-way valve body is a cylindrical valve body. The length of the cylindrical valve body of the three-way valve body is greater than the length of the eccentric plug plate, which is convenient for the processing of the eccentric plug plate.

[0012] Furthermore, the cooling mechanism includes end cover one and a cooling component. End cover one is bolted to both the front and rear ends of the outer shell. Water inlet pipes are provided on the opposite outer sides of the two end cover one located in the same outer shell. A cooling component is provided inside the outer shell to practice the circulation of cooling water.

[0013] Furthermore, the cooling component includes fixing plates, water pipes, limiting rods and partition plates. Fixing plates are fixedly connected to both the front and rear ends of the outer shell. Uniformly distributed water pipes are arranged between the two fixing plates located in the same outer shell. Uniformly distributed partition plates are arranged between the water pipes located in the same outer shell. Staggered distributed limiting rods are bolted on both the left and right sides between adjacent partition plates and between the fixing plates and adjacent partition plates, which is convenient for the installation of the water pipes.

[0014] Compared with the prior art, the beneficial effects of the present utility model are: This double-tube type cooler has the following advantages:

[0015] When commutation is required, rotate the rotating frame, the rotating shaft rotates, driving the two eccentric blocking plates to rotate 180° respectively, realizing the commutation of the hydraulic oil. At the same time, the positioning plates rotate 180° respectively to contact the sides of the adjacent lower limiting plates. When the positioning plates contact the sides of the adjacent lower limiting plates respectively, it indicates that the eccentric blocking plates have rotated in place. The length of the cylindrical valve body of the three-way valve body is greater than the length of the eccentric blocking plate, and the length of the eccentric blocking plate is greater than the diameter of the three-way branch connecting pipe of the three-way valve body. The machining accuracy requirements and assembly accuracy requirements for the length of the eccentric blocking plate are greatly reduced, facilitating machining. The positioning plates correspond to the front and rear positions of the adjacent eccentric blocking plates respectively, facilitating maintenance personnel to know the current position of the eccentric blocking plate and confirm whether the commutation is completed. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic cross-sectional structural diagram of the present invention;

[0018] Figure 3 is a schematic enlarged structural diagram at A of the present invention;

[0019] Figure 4 is a schematic structural diagram of the cooling assembly of the present invention;

[0020] Figure 5 is a schematic cross-sectional structural diagram of the eccentric blocking plate of the present invention.

[0021] In the figure: 1 base, 2 cooling mechanism, 21 end cover one, 22 housing, 23 connecting pipe, 24 cooling assembly, 241 fixing plate, 242 water pipe, 243 limiting rod, 244 partition plate, 3 commutation mechanism, 31 rotating shaft, 32 three-way valve body, 33 positioning plate, 34 eccentric blocking plate, 35 limiting plate, 36 end cover two, 4 connecting plate, 5 rotating frame. Detailed Description of the Invention

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-5 , this embodiment provides a technical solution: a double-tube cooler, including a cooling mechanism 2 and a commutation mechanism 3;

[0024] Cooling mechanism 2: It includes a housing 22 and connecting pipes 23. The two housings 22 are fixedly connected by connecting plates 4 symmetrically distributed front and back. At the lower side of the lower housing 22, there are symmetrically distributed bases 1 fixed front and back. Connecting pipes 23 are provided at both the front and rear ends of the housing 22. The cooling mechanism 2 includes a first end cover 21 and a cooling component 24. The first end covers 21 are bolted to both the front and rear ends of the housing 22. Water inlet pipes are provided on the outer sides facing away from each other of the two first end covers 21 located in the same housing 22. A cooling component 24 is arranged inside the housing 22. The cooling component 24 includes a fixing plate 241, a water pipe 242, a limiting rod 243, and a partition plate 244. Fixing plates 241 are fixedly connected to both the front and rear ends of the housing 22. Uniformly distributed water pipes 242 are arranged between the two fixing plates 241 located in the same housing 22. Uniformly distributed partition plates 244 are arranged between the water pipes 242 located in the same housing 22. Staggered limiting rods 243 are bolted to the left and right sides between adjacent two partition plates 244 and between the fixing plate 241 and the adjacent partition plate 244. When this double-tube cooler operates, the oil fluid enters the interior of the lower housing 22 from the front three-way valve body 32, flows through each partition plate 244 respectively, and then flows out from the rear three-way valve body 32, extending the residence time of the oil fluid inside the housing 22. The cooling water enters the interior of each water pipe 242 through the front first end cover 21 and then flows out from the water inlet pipe of the rear first end cover 21, realizing the circulation of the cooling water and taking away the heat of the oil fluid, thus achieving the cooling and temperature reduction of the oil fluid;

[0025] Reversing mechanism 3: It includes a rotating shaft 31, a three-way valve body 32, an eccentric plug plate 34, and a second end cover 36. A three-way valve body 32 is bolted between two vertically adjacent connecting pipes 23 before and after. Second end covers 36 are bolted to the opposite inner sides of the two three-way valve bodies 32. A rotating shaft 31 is rotatably connected between the two second end covers 36. The rotating shaft 31 passes through the avoidance openings in the middle of the two connecting plates 4. Eccentric plug plates 34 are fixedly connected to both the front and rear sides of the rotating shaft 31. The outer arc surfaces of the eccentric plug plates 34 are respectively slidably connected to the inner walls of the adjacent three-way valve bodies 32. The reversing mechanism 3 further includes positioning plates 33. Positioning plates 33 are fixedly connected to both the front and rear ends of the rotating shaft 31. The positioning plates 33 are respectively located between the adjacent second end covers 36 and connecting plates 4. The positioning plates 33 are respectively in the same front and rear positions as the adjacent eccentric plug plates 34. The reversing mechanism 3 further includes limiting plates 35. Limiting plates 35 are fixedly connected to both the upper and lower ends of the opposite inner sides of the two second end covers 36. The sides of the upper limiting plates 35 are respectively in contact with the sides of the adjacent positioning plates 33. A rotating frame 5 is provided in the middle of the rotating shaft 31. The middle part of the three-way valve body 32 is a cylindrical valve body. The length of the cylindrical valve body of the three-way valve body 32 is greater than the length of the eccentric plug plate 34. When reversing is required, rotate the rotating frame 5, and the rotating shaft 31 rotates, driving the two eccentric plug plates 34 to rotate 180° respectively, realizing the reversing of the hydraulic oil. At the same time, the positioning plates 33 rotate 180° respectively and contact the sides of the adjacent lower limiting plates 35. The positioning plates 33 are respectively in the same front and rear positions as the adjacent eccentric plug plates 34, facilitating maintenance personnel to know the current positions of the eccentric plug plates 34.

[0026] The working principle of a double - tube cooler provided by the utility model is as follows: During assembly, first fix the relative distance between the fixed plate 241 and the partition plate 244 through the limiting rod 243 to facilitate the installation of the water pipe 242. When assembling the unit, connect the pipes in the middle of the two three - way valve bodies 32 to the oil pipelines of the unit respectively, and connect the water inlet pipelines of the first end cover 21 to the water pump. When the double - tube cooler is operating, the oil enters the interior of the lower housing 22 from the front three - way valve body 32, flows through each partition plate 244 respectively, and then flows out from the rear three - way valve body 32, extending the residence time of the oil in the interior of the housing 22. The cooling water enters the interior of each water pipe 242 through the front first end cover 21 and then flows out from the water inlet pipeline of the rear first end cover 21, realizing the circulation of the cooling water and taking away the heat of the oil, achieving the cooling and temperature reduction of the oil. When commutation is required, rotate the rotating frame 5, the rotating shaft 31 rotates, driving the two eccentric baffles 34 to rotate 180° respectively, realizing the commutation of the oil. At the same time, the positioning plates 33 rotate 180° respectively to contact the sides of the adjacent lower limiting plates 35. The positioning plates 33 are respectively in the front - rear position correspondence with the adjacent eccentric baffles 34, facilitating the maintenance personnel to know the current position of the eccentric baffle 34. When the positioning plates 33 respectively contact the sides of the adjacent lower limiting plates 35, it indicates that the eccentric baffle 34 has rotated in place. The length of the cylindrical valve body of the three - way valve body 32 is greater than the length of the eccentric baffle 34, and the length of the eccentric baffle 34 is greater than the diameter of the three - way branch connection pipeline of the three - way valve body 32. The processing accuracy requirements for the length of the eccentric baffle 34 and the assembly accuracy requirements are greatly reduced, facilitating processing.

[0027] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A double-tube cooler, characterized in that: It comprises a cooling mechanism (2) and a reversing mechanism (3); The cooling mechanism (2) comprises a shell (22) and a connecting pipe (23), wherein the two shells (22) are fixedly connected via a connecting plate (4) symmetrically distributed front and back, the lower side of the lower shell (22) is fixedly connected to a base (1) symmetrically distributed front and back, and the connecting pipe (23) is provided at both the front and rear ends of the shell (22); The reversing mechanism (3) comprises a rotating shaft (31), a three-way valve body (32), an eccentric plugging plate (34) and a second end cover (36). The three-way valve body (32) is bolted between two vertically adjacent connecting pipes (23) in the front and rear directions. The opposite inner side surfaces of the two three-way valve bodies (32) are bolted with the second end cover (36). The rotating shaft (31) is rotatably connected between the two second end covers (36). The rotating shaft (31) passes through the avoidance openings in the middle of the two connecting plates (4). The front and rear sides of the rotating shaft (31) are fixedly connected with the eccentric plugging plates (34). The outer arc surfaces of the eccentric plugging plates (34) are respectively slidably connected to the inner walls of the adjacent three-way valve bodies (32).

2. A double-tube cooler according to claim 1, characterized in that: The reversing mechanism (3) further comprises a positioning plate (33), the front and rear ends of the rotating shaft (31) are both fixedly connected with the positioning plate (33), the positioning plates (33) are respectively located between adjacent end covers (36) and connecting plates (4), and the positioning plates (33) respectively correspond to the front and rear positions of adjacent eccentric blocking plates (34).

3. A double-tube cooler according to claim 2, characterized in that: The reversing mechanism (3) further comprises a limit plate (35), and the upper and lower ends of the opposite inner side surfaces of the two end covers (36) are fixedly connected to the limit plate (35), and the side surfaces of the upper limit plate (35) are respectively in contact with the side surfaces of the adjacent positioning plates (33).

4. A double-tube cooler according to claim 1, characterized in that: A rotating frame (5) is provided in the middle of the rotating shaft (31).

5. The double-tube cooler according to claim 1, characterized in that: The middle portion of the three-way valve body (32) is a cylindrical valve body, and the length of the cylindrical valve body of the three-way valve body (32) is greater than the length of the eccentric blocking plate (34).

6. A double-tube cooler according to claim 1, characterized in that: The cooling mechanism (2) comprises an end cover (21) and a cooling assembly (24); the front and rear ends of the outer shell (22) are connected to the end cover (21) by bolts; the two end covers (21) located on the same outer shell (22) are provided with water inlet pipes on the opposite outer sides; and the cooling assembly (24) is provided inside the outer shell (22).

7. A double-tube cooler according to claim 6, characterized in that: The cooling assembly (24) comprises a fixing plate (241), a water pipe (242), a limiting rod (243) and a partition (244); the front and rear ends of the shell (22) are fixedly connected with the fixing plate (241); a uniformly distributed water pipe (242) is arranged between two fixing plates (241) of the same shell (22); a uniformly distributed partition (244) is arranged between the water pipes (242) of the same shell (22); and the limiting rods (243) distributed alternately are connected between two adjacent partitions (244) and between the fixing plate (241) and the adjacent partition (244) on the left and right sides by bolts.

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