A graphite heat exchanger provided with a cage type pullable tumbler group

Abstract

The application discloses a graphite heat exchanger provided with a cage type pullable and foldable flow deflector group, which comprises a cylinder body, graphite upper and lower end covers arranged at the top and bottom of the cylinder body, and a circular cylinder formed by a plurality of graphite heat exchange blocks arranged in the cylinder body between the graphite upper and lower end covers, wherein an annular flow guide water jacket is formed between the circular cylinder and the inner wall of the cylinder body, and the cage type pullable and foldable flow deflector group is arranged in the annular flow guide water jacket. The cage type pullable and foldable flow deflector group is arranged, so that the graphite heat exchanger has the characteristics of high assembly efficiency, simple assembly operation, high one-time assembly qualification rate, long service life, low production cost, low maintenance difficulty and cost, and high heat exchange efficiency. In addition, the graphite heat exchanger has the characteristics of complete flow deflection sealing, non-loose baffle, no abnormal sound, and high heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to a graphite heat exchanger, and more particularly to a graphite heat exchanger equipped with a cage-type retractable baffle assembly. Background Technology

[0002] Graphite heat exchangers with circular perforations are the most widely used type of graphite heat exchanger for exchanging heat between highly corrosive media, and there is a large market demand. However, traditional graphite heat exchangers with circular perforations have revealed many problems in production practice due to unreasonable design structures.

[0003] 1. The cylinder is manufactured using a riveting and welding process. Due to manufacturing constraints, its roundness and dimensional accuracy are limited, resulting in uneven circumferential gaps between the cylinder and the heat exchange blocks.

[0004] 2. The annular baffle is made of steel, and its rigid material properties cannot completely compensate for the unevenness of the circumferential gap.

[0005] 3. Assembly process requirements for round block graphite heat exchangers: The assembly process requires sufficient assembly clearance. If the final baffle clearance is too large, it will affect the baffle effect and reduce the heat transfer coefficient.

[0006] 4. The metal baffle plate corrodes and expands, making disassembly and repair difficult; the baffle plate cannot be replaced, making repair difficult; and it is impossible to disassemble and repair it independently. Summary of the Invention

[0007] The purpose of this invention is to provide a graphite heat exchanger equipped with a cage-type retractable baffle assembly. This invention features high assembly efficiency, simple assembly operation, high first-time assembly pass rate, long service life, and reduced production costs; it also reduces maintenance difficulty and costs while improving heat exchange efficiency. Furthermore, it features completely sealed baffles, baffles that are not easily loosened, no abnormal noise, and high heat exchange efficiency.

[0008] The technical scheme of the present application: a graphite heat exchanger provided with a cage type pullable baffle group, comprising a cylinder, graphite upper and lower heads arranged at the top and bottom of the cylinder, a plurality of graphite heat exchange blocks arranged in the cylinder between the graphite upper and lower heads to form a cylindrical body, an annular flow guide water jacket formed between the cylindrical body and the inner wall of the cylinder, and a cage type pullable baffle group arranged in the annular flow guide water jacket. The cage type pullable baffle group comprises a baffle group upper reinforcing flange and a baffle group lower reinforcing flange respectively sleeved on the graphite upper and lower heads, the baffle group upper reinforcing flange is supported on the top surface of the cylinder, the baffle group upper reinforcing flange and the baffle group lower reinforcing flange are fixedly connected through a plurality of baffle group longitudinal rods, two groups of longitudinal baffle plate groups are symmetrically arranged in the annular flow guide water jacket between the baffle group upper reinforcing flange and the baffle group lower reinforcing flange with the cylinder axis as the center, a plurality of annular baffle groups of semicircular ring structure are uniformly arranged in the annular flow guide water jacket on both sides of the longitudinal baffle plate groups, the annular baffle groups are divided into left and right annular baffle groups and are arranged in a staggered structure, the two ends of each annular baffle group are fixedly connected with the side walls of the two groups of longitudinal baffle plate groups, the inner and outer walls of the annular baffle groups and the longitudinal baffle plate groups are respectively in contact with the graphite heat exchange blocks and the cylinder, and the baffle group longitudinal rods pass through the annular baffle groups and are fixedly connected therewith.

[0009] In the aforementioned graphite heat exchanger provided with a cage type pullable baffle group, the baffle group upper reinforcing flange and the baffle group upper reinforcing flange are both circular rings, a plurality of bolt holes are arranged around the circular rings, the baffle group longitudinal rods are full-length bolt rods, the lower ends of the full-length bolt rods pass through the bolt holes and are fixedly connected with the baffle group lower reinforcing flange, the upper ends of the full-length bolt rods pass through the bolt holes and are fixedly connected with the baffle group upper reinforcing flange, and the full-length bolt rods are uniformly distributed in the circumferential direction.

[0010] In the aforementioned graphite heat exchanger provided with a cage type pullable baffle group, the longitudinal baffle plate group comprises a longitudinal baffle rubber sealing plate vertically arranged along the length direction of the cylinder, longitudinal baffle metal main clamping plates and longitudinal baffle metal auxiliary clamping plates arranged on the left and right sides of the longitudinal baffle rubber sealing plate, the longitudinal baffle rubber sealing plate, the longitudinal baffle metal main clamping plates and the longitudinal baffle metal auxiliary clamping plates are fixedly connected through a plurality of longitudinal baffle clamping bolts, and the upper and lower ends of the longitudinal baffle metal main clamping plates are fixedly connected with the baffle group upper reinforcing flange and the baffle group lower reinforcing flange respectively.

[0011] In the aforementioned graphite heat exchanger provided with a cage type pullable baffle group, the width of the longitudinal baffle metal main clamping plate and the longitudinal baffle metal auxiliary clamping plate is less than the width of the annular flow guide water jacket, and the distance between the two ends of the longitudinal baffle metal main clamping plate and the longitudinal baffle metal auxiliary clamping plate and the surface of the cylinder or the graphite heat exchange block is 5-10 mm; and the width of the longitudinal baffle rubber sealing plate is greater than or equal to the width of the annular flow guide water jacket.

[0012] In the aforementioned graphite heat exchanger provided with the cage type pullable baffle group, the annular baffle group is a horizontally arranged semicircular ring body arranged at the joint of two adjacent graphite heat exchange blocks, and comprises a ring baffle rubber sealing plate, a ring baffle metal main clamping plate and a ring baffle metal auxiliary clamping plate arranged on the upper and lower sides of the ring baffle rubber sealing plate respectively, the ring baffle rubber sealing plate, the ring baffle metal main clamping plate and the ring baffle metal auxiliary clamping plate of each group of annular baffle groups are fixedly connected through a plurality of ring baffle clamping bolts, the two ends of the ring baffle metal main clamping plate are fixedly connected with the side wall of the longitudinal baffle plate group, and the longitudinal rod of the baffle group is fixedly connected with the ring baffle metal main clamping plate after penetrating through the annular baffle group.

[0013] In the aforementioned graphite heat exchanger provided with the cage type pullable baffle group, the width of the ring baffle metal main clamping plate and the ring baffle metal auxiliary clamping plate is smaller than the width of the annular flow guide water jacket, and the distance between the two ends and the surface of the cylinder or the graphite heat exchange block is 5-10 mm; the width of the ring baffle rubber sealing plate is greater than or equal to the width of the annular flow guide water jacket.

[0014] In the aforementioned graphite heat exchanger provided with the cage type pullable baffle group, the upper and lower ends of the cylinder are respectively provided with a cylinder upper flange and a cylinder lower flange, a graphite upper head outside the upper reinforcing flange of the baffle group is further slidably sleeved with a cylinder upper flange sealing flange, an upper cover plate is arranged above the graphite upper head, and a spring bolt group is used to fix the upper cover plate, the cylinder upper flange sealing flange and the cylinder upper flange together after penetrating through the three.

[0015] In the aforementioned graphite heat exchanger provided with the cage type pullable baffle group, a sealing gasket is arranged between the baffle group upper reinforcing flange and the cylinder upper flange, and a rubber O-ring is arranged between the baffle group upper reinforcing flange and the cylinder upper flange sealing flange.

[0016] In the aforementioned graphite heat exchanger provided with the cage type pullable baffle group, the bottom of the graphite lower head is supported on a lower cover plate, the lower cover plate and the cylinder lower flange are fixedly connected through a lower bolt group, a sealing gasket is arranged between the graphite lower head and the lower cover plate, and a rubber O-ring is arranged between the lower cover plate and the cylinder lower flange.

[0017] In the aforementioned graphite heat exchanger provided with the cage type pullable baffle group, a plurality of flow holes are arranged horizontally and vertically on the graphite heat exchange block, the horizontally and vertically arranged flow holes are distributed at intervals and do not penetrate each other, and a sealing gasket is arranged between two adjacent graphite heat exchange blocks.

[0018] The graphite heat exchanger of the present application has the following advantages compared with the prior art:

[0019] 1. The cage type pullable baffle set of the present application, through the setting of the flexible material of the rubber sealing plate, is easier to insert and pull out during assembly, has lower requirement for manufacturing size variation, has high overall structure assembly efficiency, is easier to assemble compared with the traditional fixed baffle on the cylinder, and does not appear the situation of unqualified assembly size cooperation, and has high one-time assembly qualified rate;

[0020] 2. The present application is convenient to maintain, since the baffle set can be individually pulled out and disassembled, the graphite heat exchanger main body heat exchange assembly does not need to be disassembled during the maintenance process, the baffle can be individually replaced, the production cost is reduced; according to the detailed statistics of the 3-year use and maintenance process of more than 20 graphite coolers in the hydrogen fluoride acid project, a total of 200,000 yuan of maintenance cost is saved, and 30% is saved compared with traditional equipment;

[0021] 3. The rubber sealing plate flexible material characteristics of the cage type pullable baffle set of the present application avoid the damage of the graphite heat exchange element caused by the impact between the graphite material, improve the service life of the equipment, and according to the detailed statistics of the 3-year use and maintenance process of more than 20 graphite coolers in the hydrogen fluoride acid project, the average service life is improved by 1.2 times compared with traditional equipment;

[0022] 4. The cage type pullable baffle set of the present application has compact and solid cage structure, the baffle is not easy to loosen, the rubber sealing plate flexible material can avoid the impact between the shell side cylinder and the tube side graphite material, and has the characteristics of complete baffle sealing, high heat exchange efficiency;

[0023] 5. The cage type pullable baffle set of the present application forms good sealing effect with the shell side cylinder and the tube side heat exchange block through the setting of the rubber sealing material, avoids the leakage and short circuit of the shell side cooling water, improves the cooling water flow rate, improves the turbulent flow efficiency, and further improves the heat exchange efficiency. According to the detailed statistics of the use of more than 20 graphite coolers in the hydrogen fluoride acid project, the heat exchange efficiency is improved by an average of 1.25 times, and the practical effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0024] ATTACHMENT Figure 1 is a structural schematic view of the present application;

[0025] ATTACHMENT Figure 2 is a partial enlarged schematic view of Figure 1 ;

[0026] ATTACHMENT Figure 3 is a partial enlarged schematic view of Figure 1 ;

[0027] ATTACHMENT Figure 4 is a structural schematic view of the cage type pullable baffle set in the cylinder;

[0028] ATTACHMENT Figure 5Fig. 1 is a structural schematic diagram of a cage type pullable baffle group;

[0029] Fig. 1 is a structural schematic diagram of a cage type pullable baffle group; Figure 6 Fig. 1 is a structural schematic diagram of a cage type pullable baffle group; Figure 5 Fig. 1 is a structural schematic diagram of a cage type pullable baffle group;

[0030] Fig. 1 is a structural schematic diagram of a cage type pullable baffle group; Figure 7 Fig. 1 is a structural schematic diagram of a cage type pullable baffle group;

[0031] Fig. 1 is a structural schematic diagram of a cage type pullable baffle group; Figure 8 Fig. 1 is a structural schematic diagram of a cage type pullable baffle group.

[0032] Fig. 1 is a structural schematic diagram of a cage type pullable baffle group. DETAILED DESCRIPTION

[0033] The present application will be further described below in conjunction with the drawings and examples, but should not be limited by the description.

[0034] An embodiment of the present application is a graphite heat exchanger provided with a cage type pullable baffle group, as shown in Fig. 1. Figures 1-6As shown, including the cylinder 1, the top and bottom of the cylinder 1 is provided with graphite upper head 2 and graphite lower head 3, graphite upper head 2 and graphite lower head 3 between the cylinder 1 is provided with a plurality of graphite heat exchange block 4 overlap into a cylinder, the cylinder and the inner wall of the cylinder 1 form an annular flow guide water jacket, the annular flow guide water jacket is provided with a cage type pullable flow coil group, the cage type pullable flow coil group includes a flow coil group upper reinforcing flange 5 and a flow coil group lower reinforcing flange 6 which are respectively sleeved on the graphite upper head 2 and the graphite lower head 3, the flow coil group upper reinforcing flange 5 is supported on the top surface of the cylinder 1, the flow coil group upper reinforcing flange 5 and the flow coil group lower reinforcing flange 6 are fixedly connected through a plurality of flow coil group longitudinal rods 7, the annular flow guide water jacket between the flow coil group upper reinforcing flange 5 and the flow coil group lower reinforcing flange 6 is symmetrically provided with two groups of longitudinal baffle plate groups 9 with the cylinder 1 axis as the center, a plurality of annular flow coil groups 8 with semicircular ring structure are uniformly arranged in the annular flow guide water jacket on both sides of the longitudinal baffle plate group 9, the annular flow coil group 8 is divided into left and right annular flow coil groups and is arranged in a staggered structure, the two ends of each annular flow coil group 8 are fixedly connected with the side walls of the two groups of longitudinal baffle plate groups 9, the inner and outer walls of the annular flow coil group 8 and the longitudinal baffle plate group 9 are respectively in contact with the graphite heat exchange block 4 and the cylinder 1, and the flow coil group longitudinal rod 7 passes through the annular flow coil group 8 and is fixedly connected therewith.

[0035] In the structure, the cage type pullable flow coil group can be assembled externally, and the assembly is very convenient. After assembly is completed, the whole is inserted into the inside of the cylinder 1, so that the flow plate structure is quickly installed, and the later maintenance is also convenient and fast.

[0036] The flow coil group upper reinforcing flange 5 and the flow coil group upper reinforcing flange 6 are both circular rings, a plurality of bolt holes are arranged on the periphery of the circular ring, the flow coil group longitudinal rod 7 is a through bolt rod, the lower end of the flow coil group longitudinal rod 7 is fixedly connected with the flow coil group lower reinforcing flange 6 after passing through the bolt hole, and the upper end of the flow coil group longitudinal rod 7 is fixedly connected with the flow coil group upper reinforcing flange 5 after passing through the bolt hole and is uniformly distributed in the circumferential direction.

[0037] The longitudinal baffle plate group 9 includes a longitudinal baffle rubber sealing plate 901 which is vertically arranged along the length direction of the cylinder 1, a longitudinal baffle metal main clamping plate 902 and a longitudinal baffle metal auxiliary clamping plate 903 are respectively arranged on the left and right sides of the longitudinal baffle rubber sealing plate 901, the longitudinal baffle rubber sealing plate 901, the longitudinal baffle metal main clamping plate 902 and the longitudinal baffle metal auxiliary clamping plate 903 are fixedly connected through a plurality of longitudinal baffle clamping bolts 904, and the upper and lower ends of the longitudinal baffle metal main clamping plate 902 are fixedly connected with the flow coil group upper reinforcing flange 5 and the flow coil group lower reinforcing flange 6 respectively.

[0038] The width of the longitudinal baffle metal main clamping plate 902 and the longitudinal baffle metal secondary clamping plate 903 is less than the width of the annular flow guide water jacket, and the distance between the two ends and the surface of the cylinder 1 or the graphite heat exchange block 4 is 5-10 mm; the width of the longitudinal baffle rubber sealing plate 901 is greater than or equal to the width of the annular flow guide water jacket.

[0039] The annular baffle ring group 8 is a horizontally arranged semicircular ring body, and the annular baffle ring group 8 is arranged at the joint of adjacent two graphite heat exchange blocks 4, and includes a ring baffle rubber sealing plate 801, a ring baffle metal main clamping plate 802 and a ring baffle metal secondary clamping plate 803 arranged on the upper and lower sides of the ring baffle rubber sealing plate 801 respectively, the ring baffle rubber sealing plate 801, the ring baffle metal main clamping plate 802 and the ring baffle metal secondary clamping plate 803 of each annular baffle ring group 8 are fixedly connected through a plurality of ring baffle clamping bolts 804, the two ends of the ring baffle metal main clamping plate 802 are fixedly connected with the side wall of the longitudinal baffle plate group 9, and the longitudinal rod 7 of the baffle ring group passes through the annular baffle ring group 8 and is fixedly connected with the ring baffle metal main clamping plate 802.

[0040] The width of the ring baffle metal main clamping plate 802 and the ring baffle metal secondary clamping plate 803 is less than the width of the annular flow guide water jacket, and the distance between the two ends and the surface of the cylinder 1 or the graphite heat exchange block 4 is 5-10 mm; the width of the ring baffle rubber sealing plate 801 is greater than or equal to the width of the annular flow guide water jacket.

[0041] The upper and lower ends of the cylinder 1 are respectively provided with a cylinder upper flange and a cylinder lower flange, the graphite upper head 2 above the baffle ring group upper reinforcing flange 5 is further slidably sleeved with a cylinder upper flange sealing flange 10, an upper cover plate 11 is arranged above the graphite upper head 2, and a spring bolt group 16 passes through the upper cover plate 11, the cylinder upper flange sealing flange 10 and the cylinder upper flange, and then fixes the three together, so as to realize the compression and fixation between the upper components of the cylinder 1 and the graphite heat exchange blocks inside the cylinder 1, and ensure good sealing effect.

[0042] The baffle ring group upper reinforcing flange 5 and the cylinder upper flange are provided with a sealing gasket 12 therebetween, and the baffle ring group upper reinforcing flange 5 and the cylinder upper flange sealing flange 10 are provided with a rubber O-ring 13 therebetween. Through the structure, the sealing connection between the top components of the heat exchanger is ensured.

[0043] The graphite lower head 3 is supported on the lower cover plate 14, the lower cover plate 14 and the cylinder lower flange are fixedly connected through a lower bolt group 15, the graphite lower head 3 and the lower cover plate 14 are provided with a sealing gasket 12 therebetween, and the lower cover plate 14 and the cylinder lower flange are provided with a rubber O-ring 13 therebetween. Through the structure, the sealing connection between the bottom components of the heat exchanger is ensured.

[0044] The graphite heat exchange block 4 is horizontally and vertically provided with a plurality of flow holes, the horizontally and vertically arranged flow holes are spaced apart and not communicated with each other, and the sealing gaskets 12 are arranged between the adjacent two graphite heat exchange blocks 4 to realize the sealed connection between the graphite heat exchange blocks 4.

[0045] The working process of the device is as follows:

[0046] The high-temperature material flows into the heat exchanger pipe from the material inlet, sequentially passes through the graphite lower head 3, the longitudinal flow hole of the graphite heat exchange block 4 and the graphite upper head 2, and finally flows out of the heat exchanger from the material outlet. The heat is taken away by the shell side service medium through the heat exchange between the walls, and the heat exchange function is realized. The cooling water enters the annular flow guide water jacket between the cylinder 1 and the graphite heat exchange block 4 from the cooling water inlet on the cylinder 1, is further blocked by the two longitudinal baffle groups 9 which are arranged at 180 degrees, is blocked upwards by the first annular baffle group 8, and is forced to pass through the transverse flow hole of the first graphite heat exchange block 4 to reach the opposite side annular flow guide water jacket of the two longitudinal baffle groups 9, is further blocked upwards by the second annular baffle group 8, and is forced to pass through the transverse flow hole of the second graphite heat exchange block 4 to reach the opposite side annular flow guide water jacket of the two longitudinal baffle groups 9. The cycle is repeated, and finally the cooling water flows out from the cooling water outlet of the cylinder 1, and the heat exchange function of the graphite heat exchange block 4 is realized to take away the heat of the material.

[0047] The process flow of the device assembly, maintenance and disassembly is as follows:

[0048] 1. Support and fix the lower cover plate 14 on the assembly platform and find the level;

[0049] 2. Install the graphite lower head 3 and arrange the sealing gaskets 12 and the rubber O-rings 13;

[0050] 3. Install the graphite heat exchange blocks 4 in sequence and arrange the sealing gaskets 12 between the graphite heat exchange blocks 4;

[0051] 4. Install the graphite upper head 2 and arrange the sealing gaskets 12 between the graphite upper head 2 and the graphite heat exchange blocks 4;

[0052] 5. Install the cylinder 1 and arrange the sealing gaskets 12 on the flange of the cylinder;

[0053] 6. Hoist and insert the cage type pullable baffle group and arrange the rubber O-rings 13 on the reinforcing flange 5 of the baffle group;

[0054] 7. Install the cylinder flange sealing flange 10;

[0055] 8. Install the upper cover plate 11 and arrange the sealing gaskets 12 between the upper cover plate 11 and the graphite upper head 2;

[0056] 9. Tighten the bolts of each group and test.

[0057] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0058] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0059] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0060] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0061] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0062] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0063] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0064] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0065] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:

[0066] The graphite heat exchanger provided with the cage type pullable baffle group of the present application has the following structures of each component:The graphite heat exchange blocks 4 are provided with a plurality of flow holes distributed in the horizontal direction, and are simultaneously provided with a plurality of flow holes distributed in the vertical direction, and the flow holes distributed in the vertical direction are distributed in an interval manner and are not through.

[0067] The graphite upper end cover 2, the graphite lower end cover 3 and the graphite heat exchange blocks 4 sealingly connected therebetween jointly form a cylindrical body, and the cylindrical body forms an annular flow guide water jacket with the cylinder body 1, and the cage type pullable baffle group is arranged in the annular flow guide water jacket and is fixedly connected with the upper flange sealing flange 10 of the cylinder body.

[0068] The cage type pullable baffle group is composed of a lower reinforcing flange 6 of the baffle group, a longitudinal rod 7 of the baffle group, a longitudinal baffle plate group 9, a ring baffle group 8 and an upper reinforcing flange 5 of the baffle group.

[0069] The lower reinforcing flange 6 of the baffle group and the upper reinforcing flange 5 of the baffle group are both circular rings, and the upper reinforcing flange 6 of the baffle group is provided with a plurality of bolt holes around the periphery.

[0070] The longitudinal rod 7 of the baffle group is a full-length bolt rod, and the number thereof is determined according to the diameter size and is further optimized to be a multiple of 4. The lower end of the longitudinal rod 7 of the baffle group is fixedly connected with the lower reinforcing flange 6 of the baffle group, the upper end is fixedly connected with the upper reinforcing flange 5 of the baffle group, and the longitudinal rod 7 of the baffle group is uniformly distributed in the circumferential direction.

[0071] The longitudinal baffle plate group 9 is composed of two groups, which are arranged at an interval of 180 degrees and are distributed in the vertical direction of the plurality of flow holes distributed in the horizontal direction of the graphite heat exchange blocks 4. The longitudinal baffle plate group 9 includes a longitudinal baffle rubber sealing plate 901, a longitudinal baffle metal auxiliary clamping plate 903, a longitudinal baffle metal main clamping plate 902 and a longitudinal baffle clamping bolt 904.

[0072] The longitudinal baffle metal main clamping plate 902 is a full-length strip, which is provided with a plurality of uniformly distributed bolt holes. The lower end of the longitudinal baffle metal main clamping plate 902 is fixedly connected with the lower reinforcing flange 6 of the baffle group, and the upper end is fixedly connected with the upper reinforcing flange 5 of the baffle group.

[0073] The longitudinal baffle metal auxiliary clamping plate 903 is a full-length strip, which has the same width as the longitudinal baffle metal main clamping plate 902 and is provided with a plurality of uniformly distributed bolt holes. The bolt holes of the longitudinal baffle metal auxiliary clamping plate 903 correspond to the plurality of uniformly distributed bolt holes of the longitudinal baffle metal main clamping plate 902. The width of the longitudinal baffle metal auxiliary clamping plate 903 is less than the width of the annular flow guide water jacket, and the optimized matching size is that there are 5-10mm gaps at both ends.

[0074] The longitudinal baffle rubber sealing plate 901 is a full-length strip, and its width is greater than or equal to the width of the annular flow guide water jacket. The fit size is an interference fit, so as to maintain the sealing effect. The longitudinal baffle rubber sealing plate 901 is provided with a plurality of uniformly distributed bolt holes, which are one-to-one corresponding to a plurality of uniformly distributed bolt holes provided on the longitudinal baffle metal main clamping plate 902 and the longitudinal baffle metal auxiliary clamping plate 903. The longitudinal baffle metal main clamping plate 902 and the longitudinal baffle metal auxiliary clamping plate 903 are connected and clamped to fix the longitudinal baffle rubber sealing plate 901 through the longitudinal baffle clamping bolt 904.

[0075] The annular baffle ring group 8 is a semicircular ring, and is horizontally placed. A plurality of groups are staggered and distributed on both sides of the two longitudinal baffle plates 9, and are longitudinally uniformly distributed.

[0076] The annular baffle ring group 8 comprises an annular baffle rubber sealing plate 801, an annular baffle metal auxiliary clamping plate 803, an annular baffle metal main clamping plate 802 and an annular baffle clamping bolt 804.

[0077] The annular baffle metal main clamping plate 802 is a semicircular ring plate, and is provided with a plurality of uniformly distributed bolt holes. The two ends of the annular baffle metal main clamping plate 802 are fixedly connected with the longitudinal baffle metal main clamping plate 902, and the annular baffle metal main clamping plate 802 is fixedly connected with the longitudinal rod 7 of the annular baffle ring group at a corresponding position.

[0078] The annular baffle metal auxiliary clamping plate 803 is a semicircular ring plate, and is provided with a plurality of uniformly distributed bolt holes. The width of the annular baffle metal auxiliary clamping plate 803 is the same as that of the annular baffle metal main clamping plate 802, and the bolt holes of the annular baffle metal auxiliary clamping plate 803 are one-to-one corresponding to a plurality of uniformly distributed bolt holes provided on the annular baffle metal main clamping plate 802. The width of the annular baffle metal auxiliary clamping plate 803 is less than the width of the annular flow guide water jacket. The optimized fit size is that a gap of 5-10 mm is left at both ends.

[0079] The annular baffle rubber sealing plate 801 is a semicircular ring plate, and its width is greater than or equal to the width of the annular flow guide water jacket. The fit size is an interference fit, so as to maintain the sealing effect.

[0080] The annular baffle rubber sealing plate 801 is provided with a plurality of uniformly distributed bolt holes, which are one-to-one corresponding to a plurality of uniformly distributed bolt holes provided on the annular baffle metal main clamping plate 802 and the annular baffle metal auxiliary clamping plate 803. The annular baffle metal main clamping plate 802 and the annular baffle metal auxiliary clamping plate 803 are connected and clamped to fix the annular baffle rubber sealing plate 801 through the annular baffle clamping bolt 804.

[0081] The cage type pullable baffle group is fixed and connected with each other by the lower reinforcing flange 6 of the baffle group, the longitudinal rod 7 of the baffle group, the longitudinal baffle metal main clamping plate 902, the annular baffle metal main clamping plate 802, and the upper reinforcing flange 5 of the baffle group, and collectively forms a cage type structure fixed framework to complete the rigidity, strength and structure functions. The longitudinal baffle rubber sealing plate 901 and the annular baffle rubber sealing plate 801 complete the function of full sealing cooperation of the baffle damper without short circuit of the flow. The longitudinal baffle metal auxiliary clamping plate 903, the annular baffle metal auxiliary clamping plate 803 and the clamping bolt complete the function of clamping the baffle rubber sealing plate, and are convenient for dismounting and replacing.

Claims

1. A graphite heat exchanger equipped with a cage-type retractable baffle assembly, comprising a cylindrical body (1), wherein a graphite upper end cap (2) and a graphite lower end cap (3) are provided at the top and bottom of the cylindrical body (1), and a cylindrical body formed by overlapping graphite heat exchange blocks (4) is provided inside the cylindrical body (1) between the graphite upper end cap (2) and the graphite lower end cap (3), wherein an annular guide water jacket is formed between the cylinder and the inner wall of the cylindrical body (1), characterized in that: A cage-type retractable baffle assembly is installed inside the annular guide water jacket. The cage-type retractable baffle assembly includes an upper baffle assembly reinforcing flange (5) and a lower baffle assembly reinforcing flange (6) respectively fitted onto the upper graphite head (2) and the lower graphite head (3). The upper baffle assembly reinforcing flange (5) is supported on the top surface of the cylinder (1). The upper baffle assembly reinforcing flange (5) and the lower baffle assembly reinforcing flange (6) are fixedly connected by multiple longitudinal baffle assembly rods (7). Two sets of longitudinal baffle plate assemblies (9) are symmetrically arranged around the axis of the cylinder (1) inside the annular guide water jacket between the upper baffle assembly reinforcing flange (5) and the lower baffle assembly reinforcing flange (6). The annular baffle rings (8) with semi-circular ring structures are uniformly arranged in the annular guide water jackets on both sides of the longitudinal baffle group (9). The annular baffle rings (8) are divided into left and right annular baffle rings and are arranged in an alternating structure. The two ends of each annular baffle ring (8) are fixedly connected to the side walls of the two longitudinal baffle groups (9). The inner and outer walls of the annular baffle rings (8) and the longitudinal baffle groups (9) are in contact with the graphite heat exchange blocks (4) and the cylinder (1) respectively. The longitudinal rod (7) of the baffle ring group passes through the annular baffle ring group (8) and is fixedly connected to it. A sealing gasket (12) is provided between two adjacent graphite heat exchange blocks (4).

2. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 1, characterized in that: The upper reinforcing flange (5) and the lower reinforcing flange (6) of the baffle group are both annular bodies with several bolt holes around their perimeter. The longitudinal rod (7) of the baffle group is a continuous bolt rod, with its lower end passing through the bolt hole and fixedly connected to the lower reinforcing flange (6) of the baffle group; and its upper end passing through the bolt hole and fixedly connected to the upper reinforcing flange (5) of the baffle group, which are evenly distributed circumferentially.

3. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 1, characterized in that: The longitudinal baffle plate assembly (9) includes a longitudinal baffle rubber sealing plate (901) vertically arranged along the length direction of the cylinder (1). The longitudinal baffle rubber sealing plate (901) is provided with a longitudinal baffle metal main clamping plate (902) and a longitudinal baffle metal secondary clamping plate (903) on the left and right sides respectively. The longitudinal baffle rubber sealing plate (901), the longitudinal baffle metal main clamping plate (902) and the longitudinal baffle metal secondary clamping plate (903) are fixedly connected by multiple sets of longitudinal baffle clamping bolts (904). The upper and lower ends of the longitudinal baffle metal main clamping plate (902) are fixedly connected to the upper reinforcing flange (5) of the baffle ring assembly and the lower reinforcing flange (6) of the baffle ring assembly respectively.

4. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 3, characterized in that: The width of the longitudinal baffle metal main clamping plate (902) and the longitudinal baffle metal secondary clamping plate (903) is less than the width of the annular guide water jacket, and the distance between the two ends and the surface of the cylinder (1) or the graphite heat exchange block (4) is 5-10 mm; the width of the longitudinal baffle rubber sealing plate (901) is greater than or equal to the width of the annular guide water jacket.

5. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 1, characterized in that: The annular baffle assembly (8) is a horizontally arranged semi-circular ring, which is set at the joint of two adjacent graphite heat exchange blocks (4). It includes an annular baffle rubber sealing plate (801). The annular baffle rubber sealing plate (801) is provided with an annular baffle metal main clamping plate (802) and an annular baffle metal secondary clamping plate (803) on its upper and lower sides, respectively. The annular baffle rubber sealing plate (801), the annular baffle metal main clamping plate (802) and the annular baffle metal secondary clamping plate (803) of each annular baffle assembly (8) are fixedly connected by multiple annular baffle clamping bolts (804). The two ends of the annular baffle metal main clamping plate (802) are fixedly connected to the side wall of the longitudinal baffle assembly (9). The longitudinal rod (7) of the baffle assembly passes through the annular baffle assembly (8) and is fixedly connected to the annular baffle metal main clamping plate (802).

6. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 5, characterized in that: The width of the circumferential baffle metal main clamping plate (802) and the circumferential baffle metal secondary clamping plate (803) is less than the width of the annular guide water jacket, and the distance between the two ends and the surface of the cylinder (1) or the graphite heat exchange block (4) is 5-10 mm; the width of the circumferential baffle rubber sealing plate (801) is greater than or equal to the width of the annular guide water jacket.

7. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 1, characterized in that: The upper and lower ends of the cylinder (1) are respectively provided with an upper flange and a lower flange. The upper end of the graphite upper end cap (2) above the baffle ring assembly is also slidably sleeved with a sealing flange (10) of the upper flange of the cylinder. An upper cover plate (11) is provided above the graphite upper end cap (2). The spring bolt assembly (16) passes through the upper cover plate (11), the sealing flange (10) of the upper flange of the cylinder and the upper flange of the cylinder to fix the three together.

8. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 7, characterized in that: A sealing gasket (12) is provided between the reinforcing flange (5) of the baffle assembly and the upper flange of the cylinder, and a rubber O-ring (13) is provided between the reinforcing flange (5) of the baffle assembly and the sealing flange (10) of the upper flange of the cylinder.

9. The graphite heat exchanger with a cage-type retractable baffle assembly as described in claim 7, characterized in that: The bottom of the graphite lower end cap (3) is supported on the lower cover plate (14). The lower cover plate (14) and the lower flange of the cylinder are fixedly connected by the lower bolt group (15). A sealing gasket (12) is provided between the graphite lower end cap (3) and the lower cover plate (14). A rubber O-ring (13) is provided between the lower cover plate (14) and the lower flange of the cylinder.

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