Steam generator with tube bundle sliding structure

Abstract

The application belongs to the technical field of steam generators, and discloses a novel steam generator with a pipe bundle sliding structure, which comprises a shell, an installation end cover is fixedly arranged at the end of the shell, a distribution assembly is fixedly arranged on the front face of the installation end cover, a heat exchange pipe bundle is arranged in the shell, and a sliding assembly is movably sleeved on the outer surface of the heat exchange pipe bundle. The heat exchange pipe bundle arranged in the shell is extruded and fixed with the installation end cover through cooperation of the distribution assembly and the fixing assembly, and the transverse movement of the sliding assembly is controlled by cooperation of the pushing assembly under the fixing, so that the sliding assembly movably sleeved on the outer side of the heat exchange pipe bundle moves transversely and continuously changes the supporting position of the heat exchange pipe bundle under reciprocating movement. When the heat exchange pipe bundle expands and shrinks with heat or cold, the internal stress of the heat exchange pipe bundle can be reduced through sliding of the sliding assembly, the friction between various assemblies is reduced, and the service life of the equipment is increased.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steam generator, in particular to a steam generator with pipe bundle sliding structure. BACKGROUND

[0002] The steam generator is a device for generating steam by using high-temperature stream in industrial production process as heat source, mainly comprising a shell and a pipe bundle in the shell, which is composed of a tube sheet, heat exchange pipes and pipe bundle support plates.

[0003] In the prior art, the steam generator has only one tube sheet, and the pipe bundle is like a cantilever beam fixed at one end of the tube sheet. In order to prevent the pipe bundle from bending due to its own gravity for a long time, a plurality of pipe bundle support plates are arranged in the pipe bundle, and the heat exchange pipes are fixed on the pipe bundle support plates to support the pipe bundle. However, this not only brings inconvenience to the installation and maintenance of the equipment, but also generates a large stress between the pipe bundle and the pipe bundle support plate, and between the pipe bundle support plate and the shell due to the thermal expansion and contraction of the pipe bundle during operation, which can damage the pipe bundle and reduce the service life of the equipment. SUMMARY

[0004] The present application aims to provide a steam generator with pipe bundle sliding structure to solve the problems in the background.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a steam generator with pipe bundle sliding structure, comprising a shell, an installation end cover fixed at the end of the shell, a distribution assembly fixed on the front surface of the installation end cover, a heat exchange pipe bundle arranged in the shell, a sliding assembly movably sleeved on the outer surface of the heat exchange pipe bundle, a pushing assembly fixed at the bottom of the inner cavity of the shell, the pushing assembly controlling the lateral movement of the sliding assembly, a clamping assembly arranged in the inner part of the sliding assembly, a fixing assembly arranged in the inner part of the distribution assembly, a liquid inlet pipe arranged at the right end of the shell, a steam outlet pipe arranged at the top of the shell, and a sealing ring fixed on the outer surface of the shell.

[0006] Preferably, the sliding assembly comprises an intermediate support plate, an outer support plate, an intermediate frame, a connecting block, a sleeve hole and a reserved groove, the intermediate support plate and the outer support plate are movably sleeved on the outer side of the heat exchange pipe bundle, the sleeve hole is arranged on the intermediate support plate and the outer support plate, the inner surface of the sleeve hole is sleeved with the heat exchange pipe bundle, the intermediate frame is fixed at the bottom of the intermediate support plate and the outer support plate, and the connecting block is fixed at the bottom of the intermediate frame.

[0007] Preferably, the front surface of the installation end cover is movably sleeved with the heat exchange pipe bundle, the front surface of the installation end cover is sleeved with a bolt, and the installation end cover is fixed on the end of the shell by the bolt.

[0008] Preferably, the distribution assembly comprises a distribution frame, an intermediate block, a tube course inlet, a tube course outlet, a push-in plug and a communication cavity, the distribution frame is fixed on the front surface of the mounting end cover, the intermediate block is fixed in the middle of the distribution frame, the tube course inlet and the tube course outlet are respectively arranged on the upper and lower parts of the distribution frame, the communication cavity is arranged in the interior of the intermediate block, the front surface of the distribution frame is provided with the push-in plug, and the push-in plug is threadedly sleeved at the end of the communication cavity.

[0009] Preferably, the fixing assembly comprises a clamping plate, a push rod and a spring, one end of the push rod is fixedly connected with the clamping plate, the other end is movably sleeved in the intermediate block, and the spring is fixed between the two groups of push rods.

[0010] Preferably, the pushing assembly comprises a sliding frame and a first electric push rod, the sliding frame is fixed at the bottom of the inner cavity of the shell, the first electric push rod is fixed in the sliding frame, and the movable end is fixedly connected with the connecting block.

[0011] Preferably, the reserved slot is arranged on the front surface of the intermediate support plate, and the clamping assembly is sleeved in the reserved slot.

[0012] Preferably, the clamping assembly comprises a horizontal plate, a fitting slot, an intermediate rod and a second electric push rod, the horizontal plate is arranged on the lower side of the outer surface of the heat exchange pipe bundle, the fitting slot is arranged at the top of the horizontal plate, the number of the horizontal plates is two and they are symmetrically arranged on the two sides of the intermediate rod, the second electric push rod is fixedly installed in the reserved slot, and the movable end of the second electric push rod is fixedly connected with the intermediate rod.

[0013] The beneficial effects of the present application are as follows:

[0014] 1、The heat exchange pipe bundle arranged in the shell and the mounting end cover are extruded and fixed by cooperation of the distribution assembly and the fixing assembly, and the transverse movement of the sliding assembly is controlled by cooperation of the pushing assembly under the fixing, so that the sliding assembly movably sleeved on the outer side of the heat exchange pipe bundle moves transversely, and the support position of the heat exchange pipe bundle is continuously changed under reciprocating movement, when the heat exchange pipe bundle expands and shrinks due to heat, the internal stress of the heat exchange pipe bundle can be reduced by sliding of the sliding assembly, the friction between components is reduced, and the service life of the equipment is increased.

[0015] 2、The heat exchange pipe bundle arranged in the shell and the mounting end cover are extruded and fixed by cooperation of the distribution assembly and the fixing assembly, and the transverse movement of the sliding assembly is controlled by cooperation of the pushing assembly under the fixing, the outer surface of the heat exchange pipe bundle is continuously rubbed in the actual sliding process, the accumulated water scale on the outer side is cleaned after being rubbed and pushed, the surface of the heat exchange pipe bundle is effectively ensured to be clean, the thickness is ensured to be stable, the influence of accumulated dirt on the heat exchange efficiency is avoided, and long-term heat exchange effect is ensured.

[0016] 3, The application realizes the resetting of the fixing assembly, the release of the clamping and fixing of the heat exchange tube bundle and the synchronous movement of the clamped and fixed heat exchange tube bundle by the movement of the sliding assembly when the heat exchange tube bundle is clamped by the clamping action of the clamping assembly, so that the complete removal of the heat exchange tube bundle from the opened shell port is realized, the convenient maintenance treatment after removal is realized, the operation is simple, and the use effect is good. The sliding assembly comprises an intermediate support plate, an outer side support plate, an intermediate frame, a connecting block, a sleeve hole and a reserved groove, the intermediate support plate and the outer side support plate are movably sleeved on the outer side of the heat exchange tube bundle, the sleeve hole is arranged on the intermediate support plate and the outer side support plate, the inner surface of the sleeve hole is sleeved with the heat exchange tube bundle, the intermediate frame is fixed at the bottom of the intermediate support plate and the outer side support plate, and the connecting block is fixed at the bottom of the intermediate frame. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the application;

[0018] Figure 2 It is a sectional view schematic diagram of the application;

[0019] Figure 3 It is a sleeving schematic diagram of the application for installing the end cover and the heat exchange tube bundle;

[0020] Figure 4 It is a sectional view schematic diagram of the sliding assembly of the application;

[0021] Figure 5 It is a schematic diagram of the clamping assembly of the application;

[0022] Figure 6 It is a schematic diagram of the intermediate support plate of the application;

[0023] Figure 7 It is a sectional view schematic diagram of the distribution assembly of the application;

[0024] Figure 8 It is a schematic diagram of the fixing assembly of the application;

[0025] Figure 9 It is a schematic diagram of the pushing assembly of the application;

[0026] In the diagram: 1. Shell; 2. Mounting end cap; 3. Distribution assembly; 31. Distribution frame; 32. Intermediate block; 33. Tube-side inlet; 34. Tube-side outlet; 35. Push plug; 36. Connecting cavity; 4. Sealing ring; 5. Heat exchanger tube bundle; 6. Sliding assembly; 61. Intermediate support plate; 62. Outer support plate; 63. Intermediate frame; 64. Connecting block; 65. Sleeve hole; 66. Reserved slot; 7. Pushing assembly; 71. Sliding frame; 72. Electric push rod No. 1; 8. Clamping assembly; 81. Horizontal plate; 82. Fitting groove; 83. Intermediate rod; 84. Electric push rod No. 2; 9. Liquid inlet pipe; 10. Steam outlet pipe; 11. Fixing assembly; 111. Clamping plate; 112. Push rod; 113. Spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 9 As shown, this embodiment of the invention provides a steam generator with a tube bundle sliding structure, including a housing 1, an end cap 2 fixedly provided at one end of the housing 1, a distribution component 3 fixedly provided on the front side of the end cap 2, a heat exchange tube bundle 5 provided inside the housing 1, a sliding component 6 movably sleeved on the outer surface of the heat exchange tube bundle 5, a pushing component 7 fixedly provided at the bottom of the inner cavity of the housing 1, the pushing component 7 controlling the lateral movement of the sliding component 6, a clamping component 8 provided inside the sliding component 6, a fixing component 11 provided inside the distribution component 3, a liquid inlet pipe 9 provided at the right end of the housing 1, a steam outlet pipe 10 provided at the top of the housing 1, and a sealing ring 4 fixedly sleeved on the outer side of the housing 1.

[0029] In use, hot fluid is input into the distribution frame 31 through the tube passage inlet 33 in the distribution assembly 3, and is input into one end of the heat exchange tube bundle 5 under the blockage of the middle block 32. The hot fluid enters the heat exchange tube bundle 5, and water is input into the shell 1 through the liquid inlet pipe 9. After heat exchange and evaporation, the generated steam flows out through the steam outlet pipe 10. In use, the push plug 35 in the rotating distribution assembly 3 is rotated to extrude the stored liquid in the communication cavity 36, and the hydraulic pressure in the communication cavity 36 acts on the fixed assembly 11 to push the two side push rods 112 to move, stretch the spring 113, move the two side clamping plates 111, and clamp and fix the heat exchange tube bundle 5 sleeved in the mounting end cover 2. When auxiliary processing of the heat exchange tube bundle is needed, the first electric push rod 72 in the push assembly 7 is started to move the connecting block 64 transversely, and the middle support plate 61 and the outer support plate 62 are moved along the heat exchange tube bundle 5 to remove the surface dirt while supporting the heat exchange tube bundle 5, and the stress distribution on the surface of the heat exchange tube bundle 5 is uniform.

[0030] Firstly, by using the cooperation of the distribution assembly 3 and the fixed assembly 11, the heat exchange tube bundle arranged in the shell 1 is extruded and fixed with the mounting end cover 2, and the transverse movement of the sliding assembly 6 is controlled by the push assembly 7 under the fixation. The sliding assembly 6 movably sleeved outside the heat exchange tube bundle 5 moves transversely and continuously changes the support position of the heat exchange tube bundle under reciprocating movement. When the heat exchange tube bundle 5 expands and contracts due to heat, the internal stress of the heat exchange tube bundle 5 can be reduced by sliding the sliding assembly 6, the friction between the components is reduced, and the service life of the equipment is increased.

[0031] In addition, by using the cooperation of the distribution assembly 3 and the fixed assembly 11, the heat exchange tube bundle arranged in the shell 1 is extruded and fixed with the mounting end cover 2, and the transverse movement of the sliding assembly 6 is controlled by the push assembly 7 under the fixation. In actual sliding process, the outer surface of the heat exchange tube bundle 5 is continuously rubbed to clean the outer scale after rubbing and extruding, effectively ensuring the cleanliness of the surface of the heat exchange tube bundle 5, ensuring the stability of the thickness, avoiding the influence of accumulated dirt on the heat exchange efficiency, and ensuring the long-term heat exchange effect.

[0032] When the heat exchange tube bundle 5 needs to be repaired, the bolts on the mounting end cover 2 are unscrewed, and the push-in plug 35 is unscrewed outward, so that the spring 113 in the fixing assembly 11 is elastically reset, and the clamping plate 111 is moved to reset, and then the mounting end cover 2 is opened, the second electric push rod 84 in the clamping assembly 8 is started, the intermediate rod 83 is moved upward, and the two lateral plates 81 are moved upward, so that the engagement groove 82 is in contact with the surface of the heat exchange tube bundle, the extrusion fixing is completed, the first electric push rod 72 in the pushing assembly 7 is started, the sliding assembly 6 is transversely moved along the sliding frame 71, and the clamped and fixed heat exchange tube bundle 5 is moved to be removed from the shell 1, and the repair processing can be carried out.

[0033] Firstly, the reset of the fixing assembly 11 is realized when the mounting end cover is disassembled by using the cooperation of the distribution assembly 3 and the fixing assembly 11, the clamping and fixing of the heat exchange tube bundle 5 is released, and the clamping action of the clamping assembly 8 is used to clamp the heat exchange tube bundle 5, and then the heat exchange tube bundle 5 is moved synchronously by using the movement of the sliding assembly 6, so that the heat exchange tube bundle 5 is completely removed from the opened shell 1 port, the convenient repair processing after removal is realized, the operation is simple, and the use effect is good. The sliding assembly 6 includes an intermediate support plate 61, an outer support plate 62, an intermediate frame 63, a connecting block 64, a sleeve hole 65 and a reserved groove 66. The intermediate support plate 61 and the outer support plate 62 are movably sleeved on the outside of the heat exchange tube bundle 5. The sleeve hole 65 is arranged on the intermediate support plate 61 and the outer support plate 62, the inner surface of the sleeve hole 65 is sleeved with the heat exchange tube bundle 5, the intermediate frame 63 is fixed at the bottom of the intermediate support plate 61 and the outer support plate 62, and the connecting block 64 is fixed at the bottom of the intermediate frame 63.

[0034] The front surface of the mounting end cover 2 is movably sleeved with the heat exchange tube bundle 5, the front surface of the mounting end cover 2 is sleeved with the bolt, and the mounting end cover 2 is fixed on the end of the shell 1 by the bolt.

[0035] The mounting end cover 2 is fixed by using the bolt, and the sealing ring 4 is used for sealing the mounting end surface.

[0036] The distribution assembly 3 comprises a distribution frame 31, an intermediate block 32, a tube path inlet 33, a tube path outlet 34, a push-in plug 35 and a communication cavity 36. The distribution frame 31 is fixed on the front surface of the mounting end cover 2. The intermediate block 32 is fixed on the middle part of the distribution frame 31. The tube path inlet 33 and the tube path outlet 34 are respectively arranged on the upper and lower parts of the distribution frame 31. The communication cavity 36 is arranged in the inner part of the intermediate block 32. The push-in plug 35 is arranged on the front surface of the distribution frame 31 and is threadedly sleeved on the end part of the communication cavity 36. The fixing assembly 11 comprises a clamping plate 111, a push rod 112 and a spring 113. One end of the push rod 112 is fixedly connected with the clamping plate 111, and the other end is movably sleeved in the intermediate block 32. The spring 113 is fixed between the two groups of push rods 112. The clamping plates 111 are symmetrically arranged on the two sides of the intermediate block 32. The communication cavity 36 is in communication with the sleeving holes of the push rods 112.

[0037] By using the cooperation of the distribution assembly 3 and the fixing assembly 11, on the one hand, the introduction and the outlet of the heat fluid are realized. On the other hand, under the action of the pressure in the communication cavity 36, the action of the fixing assembly 11 is realized. The heat exchange tube bundle 5 sleeved on the mounting end cover 2 is assistedly clamped and fixed. The stability of the fixed heat exchange tube bundle 5 is maintained when the sliding assembly slides. The stress adjustment and the external cleaning are realized.

[0038] The pushing assembly 7 comprises a sliding frame 71 and a first electric push rod 72. The sliding frame 71 is fixed on the bottom of the inner cavity of the shell 1. The first electric push rod 72 is fixed in the sliding frame 71, and the movable end is fixedly connected with the connecting block 64.

[0039] The pushing assembly 7 provides the pushing force, and realizes the transverse movement control of the sliding assembly 6.

[0040] The reserved slot 66 is arranged on the front surface of the intermediate supporting plate 61. The clamping assembly 8 is sleeved in the reserved slot 66.

[0041] The reserved slot 66 reserves the installation and upward movement space of the clamping assembly 8. The clamping and fixing operation is completed.

[0042] The clamping assembly 8 comprises a horizontal plate 81, a fitting groove 82, an intermediate rod 83 and a second electric push rod 84. The horizontal plate 81 is arranged on the lower side of the outer surface of the heat exchange tube bundle 5. The fitting groove 82 is arranged on the top of the horizontal plate 81. The number of the horizontal plates 81 is two and they are symmetrically arranged on the two sides of the intermediate rod 83. The second electric push rod 84 is fixedly installed in the reserved slot 66. The movable end of the second electric push rod 84 is fixedly connected with the intermediate rod 83.

[0043] By using the clamping assembly 8, the clamping and fixing of the heat exchange tube bundle 5 are realized. The heat exchange tube bundle 5 is kept fixed in the sliding assembly 6. After the fixing of the fixing assembly 11 is released, the movement of the heat exchange tube bundle 5 is directly driven by the sliding of the sliding assembly 6. The active moving out is realized. The maintenance is facilitated.

[0044] The working principle and use process of the present application: when in use, the hot fluid is input into the distribution frame 31 through the pipe passage inlet 33 in the distribution assembly 3, and is input into one end of the heat exchange tube bundle 5 under the blockage of the middle block 32. The hot fluid enters the heat exchange tube bundle 5, and at the same time, the water flow is input into the shell 1 through the liquid inlet pipe 9, and is evaporated after heat exchange with the heat exchange tube bundle 5 to generate steam which flows out upwardly through the steam outlet pipe 10. In the use process, the push-in plug 35 in the rotating distribution assembly 3 is rotated to extrude the stored liquid in the communication cavity 36 and to make the hydraulic pressure in the communication cavity 36 increase, and the hydraulic pressure acts on the fixed assembly 11 to push the two side push rods 112 to move, to stretch the spring 113, to make the two side clamping plates 111 move and to clamp and fix the heat exchange tube bundle 5 sleeved in the installation end cover 2. When the auxiliary treatment of the heat exchange tube bundle is needed, the first electric push rod 72 in the pushing assembly 7 is started to push the connecting block 64 to move transversely and to make the middle support plate 61 and the outer support plate 62 move along the heat exchange tube bundle 5 to realize the support of the heat exchange tube bundle 5 and the removal of the surface dirt, and the stress distribution on the surface of the heat exchange tube bundle 5 is uniform. When the heat exchange tube bundle 5 needs to be overhauled, the bolts on the installation end cover 2 are unscrewed, and the push-in plug 35 is rotated outwardly to make the spring 113 in the fixed assembly 11 elastically reset and to drive the clamping plate 111 to move and reset, and then the installation end cover 2 is opened, the second electric push rod 84 in the clamping assembly 8 is started to drive the middle rod 83 to move upwardly and to make the two side transverse plates 81 move upwardly to make the engagement grooves 82 contact with the surface of the heat exchange tube bundle upwardly to complete the extrusion and fixation. The first electric push rod 72 in the pushing assembly 7 is started to drive the sliding assembly 6 to move along the sliding frame 71 and to drive the clamped and fixed heat exchange tube bundle 5 to move and to be removed from the shell 1 to be overhauled.

[0045] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A steam generator of the tube bundle sliding structure comprising a shell (1), characterized in that: The end of the shell (1) is fixedly provided with a mounting end cover (2), the front surface of the mounting end cover (2) is fixedly provided with a distribution assembly (3), the inside of the shell (1) is provided with a heat exchange tube bundle (5), the outer surface of the heat exchange tube bundle (5) is movably sleeved with a sliding assembly (6), the bottom of the inside cavity of the shell (1) is fixedly provided with a pushing assembly (7), the pushing assembly (7) controls the transverse movement of the sliding assembly (6), the inside of the sliding assembly (6) is provided with a clamping assembly (8), the inside of the distribution assembly (3) is provided with a fixing assembly (11), the right end of the shell (1) is provided with a liquid inlet pipe (9), the top of the shell (1) is provided with a steam outlet pipe (10), the outer side surface of the shell (1) is fixedly sleeved with a sealing ring (4), The sliding assembly (6) comprises an intermediate support plate (61), an outer side support plate (62), an intermediate frame (63), a connecting block (64), a sleeve hole (65) and a reserved groove (66), the intermediate support plate (61) and the outer side support plate (62) are movably sleeved on the outer side of the heat exchange tube bundle (5), the sleeve hole (65) is formed in the intermediate support plate (61) and the outer side support plate (62), the inner surface of the sleeve hole (65) is sleeved with the heat exchange tube bundle (5), the intermediate frame (63) is fixed at the bottom of the intermediate support plate (61) and the outer side support plate (62), the connecting block (64) is fixed at the bottom of the intermediate frame (63), The distribution assembly (3) comprises a distribution frame (31), an intermediate block (32), a tube-pass inlet (33), a tube-pass outlet (34), a push-in plug (35) and a communication cavity (36), the distribution frame (31) is fixed on the front surface of the mounting end cover (2), the intermediate block (32) is fixed in the middle of the distribution frame (31), the tube-pass inlet (33) and the tube-pass outlet (34) are respectively arranged on the upper and lower parts of the distribution frame (31), the communication cavity (36) is formed in the inside of the intermediate block (32), the front surface of the distribution frame (31) is provided with the push-in plug (35), the push-in plug (35) is threadedly sleeved at the end of the communication cavity (36), The fixing assembly (11) comprises a clamping plate (111), a push rod (112) and a spring (113), one end of the push rod (112) is fixedly connected with the clamping plate (111), and the other end is movably sleeved in the intermediate block (32), the spring (113) is fixed between the two groups of push rods (112), the clamping plate (111) is symmetrically arranged on the two sides of the intermediate block (32), and the communication cavity (36) is in communication with the sleeving holes of the push rods (112). The clamping assembly (8) comprises a horizontal plate (81), a matching groove (82), an intermediate rod (83) and a second electric push rod (84), the horizontal plate (81) is located at the lower side of the outer surface of the heat exchange tube bundle (5), the matching groove (82) is arranged at the top of the horizontal plate (81), the number of the horizontal plate (81) is two and is symmetrically distributed on both sides of the intermediate rod (83), the second electric push rod (84) is fixedly installed in the reserved groove (66), and the movable end of the second electric push rod (84) is fixedly connected with the intermediate rod (83).

2. The steam generator of claim 1, wherein: The front surface of the mounting end cover (2) is movably sleeved with the heat exchange tube bundle (5), the front surface of the mounting end cover (2) is sleeved with a bolt, and the mounting end cover (2) is fixedly installed at the end of the shell (1) through the bolt.

3. The steam generator of claim 1, wherein: The pushing assembly (7) comprises a sliding frame (71) and a first electric push rod (72), the sliding frame (71) is fixedly installed at the bottom of the inner cavity of the shell (1), the first electric push rod (72) is fixedly installed in the sliding frame (71), and the movable end is fixedly connected with the connecting block (64).

4. A steam generator of the type having a bundle sliding structure according to claim 3, characterized in that: The reserved groove (66) is arranged on the front surface of the intermediate supporting plate (61), and the clamping assembly (8) is sleeved in the reserved groove (66).

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