CN111551066A

CN111551066A - Heat exchanger

Info

Publication number: CN111551066A
Application number: CN202010333677.2A
Authority: CN
Inventors: 蔡志鸣; 季伟明; 魏永; 沈向阳
Original assignee: Shanghai Petrochemical Machinery Manufacturing Co
Current assignee: Shanghai Petrochemical Machinery Manufacturing Co
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-08-18

Abstract

The invention relates to a heat exchanger, which comprises a pressure container and a plate bundle positioned in the pressure container, wherein a feeding inlet, a feeding outlet, a fluid inlet and a fluid outlet which are communicated with the plate bundle are connected to the pressure container, expansion joints are arranged on the feeding inlet, the feeding outlet, the fluid inlet and the fluid outlet, a fixing device connected with the pressure container is arranged at one end of the plate bundle, the fixing device comprises a horizontal fixing support and a connecting support, the fixing support and the connecting support are respectively welded on the plate bundle and the pressure container, the fixing support is lapped on the connecting support, the fixing support and the connecting support are detachably and fixedly connected through bolts, and a positioning device used for positioning the plate bundle and the pressure container is respectively arranged at the other end of the plate bundle and the pressure container. The invention has the advantages of stably connecting the bracket bundle and the pressure container, effectively reducing the influence caused by expansion with heat and contraction with cold and ensuring the service life of the heat exchanger.

Description

Heat exchanger

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a heat exchanger.

Background

Heat exchangers (also known as heat exchangers or heat exchange devices) are devices used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements, and are an industrial application of convective and conductive heat transfer. The heat exchanger is a common device in chemical industry, petroleum industry, power industry, food industry and other industrial departments, and plays an important role in production.

In the existing design, chinese patent with publication number CN207113705U discloses a back pressure prevention cleaning device for a three-expansion-joint inlet/outlet all-welded plate heat exchanger, which comprises a reaction product inlet, a feed outlet, an exhaust hole, a hot-end expansion joint, a feed header, a reaction product header, a pressure vessel, a welded plate bundle, a feed inlet, a reaction product outlet, a cold-end expansion joint, a circulating gas inlet, a condensate discharging port, a feed pump and a valve; the pressure vessel is of a closed cylindrical structure, a welding plate bundle is arranged in the pressure vessel, a feeding header and a reaction product header are arranged at the upper end of the welding plate bundle, the upper ends of the feeding header and the reaction product header are respectively connected with a feeding outlet and a reaction product inlet through pipelines, thermal expansion joints are arranged on the pipelines, and exhaust holes are formed between the feeding outlet and the reaction product inlet and positioned at the top end of the pressure vessel; the lower end of the welded plate bundle is provided with a reaction product collecting box, the lower end of the reaction product collecting box is connected with a reaction product outlet through a pipeline, a cold end expansion joint is arranged on the pipeline, the lower end of the welded plate bundle is provided with a feeding inlet, a condensation discharging port is arranged between the feeding inlet and the reaction product outlet and positioned at the bottom end of the pressure container, and the feeding inlet is also connected with a circulating gas inlet; the circulating gas inlet is connected with a feeding plastic hose, and the reaction product outlet is connected with a reaction product plastic hose; the feeding pump is connected with a first pipeline, the first pipeline is connected with a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline, the second pipeline is connected with a reaction product outlet and is provided with a valve, the third pipeline is connected with a condensation discharge port and is provided with a valve, the fourth pipeline is connected with a feeding inlet and is provided with a valve, and the fifth pipeline is connected with a sampling point and is provided with a valve; all be equipped with a measuring pump on second pipeline and the fourth pipeline, feeding plastic hose's bottom is equipped with a pressure transmitter, reaction product plastic hose's bottom is equipped with hydraulic pressure sensor, hydraulic pressure sensor links to each other with a controller, the controller links to each other with the alarm.

The following defect exists in the above-mentioned current design, and the in-process that the heat exchanger was using, because the relation of connection of plate bundle and pressure vessel welds with both through the pipeline for both are together fixed, because expend with heat and contract with cold's principle, the flexible influence that can't compensate elimination stress that can not get of pipeline, and the plate bundle easily rocks in pressure vessel, leads to the life reduction of heat exchanger.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a heat exchanger which is provided with a stable connecting support bundle and a pressure container, effectively reduces the influence caused by expansion with heat and contraction with cold and ensures the service life of the heat exchanger.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a heat exchanger, includes pressure vessel and the board bundle that is located pressure vessel, last feeding entry, the feed outlet, fluid inlet, the fluid outlet that is linked together with the board bundle of being connected with of pressure vessel, be provided with the expansion joint on feeding entry, feed outlet, fluid inlet, the fluid outlet, the one end of board bundle is provided with the fixing device who is connected with pressure vessel, fixing device is including the fixed bolster, the linking bridge that are the level form, fixed bolster, linking bridge weld respectively on board bundle, pressure vessel, the fixed bolster is taken on the linking bridge, fixed connection can be dismantled to fixed bolster and linking bridge bolt, the other end of board bundle and pressure vessel is provided with respectively and is used for carrying out the positioner who fixes a position board bundle, pressure vessel.

Through adopting above-mentioned technical scheme, the fixed bolster is taken on the linking bridge for linking bridge plays the supporting role to the board bundle, and the fixed mode of dismantling between linking bridge and the fixed bolster is convenient for fix the board bundle, makes the board bundle stably be located pressure vessel, and then receives pressure vessel's protection. The positioning device prevents the plate bundle and the pressure container from shaking, and the plate bundle and the pressure container are stably fixed.

The present invention in a preferred example may be further configured to: the positioning device comprises a guide rail and a guide plate, the guide rail is arranged on the plate bundle, the guide plate is arranged on the pressure container, and the guide rail is abutted against one side of the guide plate, which is far away from the connecting support.

Through adopting above-mentioned technical scheme, cooperate in the fixed of linking bridge, fixed bolster, realize the rigidity to plate bundle, pressure vessel, both in-process of using can not produce relative rocking, save the time of installation.

The present invention in a preferred example may be further configured to: the feeding inlet is arranged as a spray pipe assembly, the spray pipe assembly comprises a spray pipe with one end flange and a connecting pipe with two ends and a flange, a sealing pipe communicated with the pressure container and with one end flange is arranged outside the pressure container, the spray pipe is inserted into the sealing pipe and connected with the plate bundle, one end of the spray pipe with a spray hole is located in the plate bundle, and one end of the connecting pipe is detachably and fixedly connected with the spray pipe and the sealing pipe through bolts.

Through adopting above-mentioned technical scheme, install spray tube, connecting pipe in advance, and then install connecting pipe, sealed tube, will insert on the spray tube welding in the board is restrainted to the board, realize fixing and sealed between board and the spray tube, both guaranteed the stable defeated material of shower subassembly, realized the stable connection to the shower subassembly simultaneously, easily installation.

The present invention in a preferred example may be further configured to: the connecting pipe is provided with a hanging plate, the hanging plate is provided with a hanging hole, and the connecting pipe is welded with a first positioning column and a second positioning column which are in positioning fit with the spray pipe and the sealing pipe.

By adopting the technical scheme, the lifting appliance hoists the connecting pipe, the connecting pipe is easily installed on the pressure vessel, and the labor consumption and the occurrence of accidents are saved. The first positioning column and the second positioning column are convenient for quickly positioning the connecting pipe, the spray pipe and the sealing pipe, and quickly installing the spray pipe, the sealing pipe and the connecting pipe.

The present invention in a preferred example may be further configured to: and a conical grid plate is arranged at one end of the connecting pipe, which is far away from the spray pipe.

Through adopting above-mentioned technical scheme, the toper grid plate has increased with the filter area of feeding liquid, has guaranteed the filter effect of toper grid plate, and the filter effect is ensured in the increase of the surface area of toper grid plate, prolongs the clearance time period to the toper filter simultaneously.

The present invention in a preferred example may be further configured to: the feeding outlet and the fluid inlet are arranged at one end, close to the connecting support, of the pressure vessel, the fluid outlet is arranged at the other end of the pressure vessel, and lifting lugs for lifting the pressure vessel are detachably arranged on the feeding outlet and the fluid inlet.

Through adopting above-mentioned technical scheme, at the in-process of transporting, the lug is fixed on feed outlet, fluid entry, seals it, prevents that the dust from entering into the plate bundle and causing the pollution. The lug can used repeatedly, realizes the reuse of resource.

The present invention in a preferred example may be further configured to: and the feeding outlet, the fluid inlet and the fluid outlet are respectively connected with a cleaning connecting pipe.

Through adopting above-mentioned technical scheme, wash the access of takeover, be convenient for regularly wash the board bundle, prevent to gather the dirt in the board bundle and lead to the heat exchange rate to reduce, play the effect of guaranteeing the board bundle heat exchange rate.

The present invention in a preferred example may be further configured to: the bottom of pressure vessel is provided with the toper skirt, the toper skirt is including being used for the cover to establish vertical crown plate on pressure vessel, being used for carrying on the horizontal crown plate on the support, connecting both's taper plate and being located the reinforcing plate on the taper plate, the mounting hole has been seted up on the horizontal crown plate, the reinforcing plate is used for with the pressure vessel butt towards one side of taper plate central line.

Through adopting above-mentioned technical scheme, the conical plate on the toper skirt provides the holding power along conical plate generating line direction, the holding power and then decomposes into horizontal direction and the ascending component of vertical direction, the resultant force of the component is balanced mutually with the gravity of connecting the object in the vertical direction, fix the connecting object, the area of contact of vertical crown plate and connecting the object increases, horizontal crown plate is used for increasing with the area of contact of support, the stability of connecting has been guaranteed to the structure of toper skirt, it is not fragile in the use. Simultaneously, reinforcing plate, toper skirt form stable triangular support structure, prevent that toper skirt from taking place to damage in use, have further strengthened the structural strength of toper skirt.

The present invention in a preferred example may be further configured to: one side of the horizontal annular plate facing the vertical annular plate is provided with a plurality of T-shaped connecting plates, the connecting plates are connected with the horizontal annular plate and the conical plate, and holes communicated with the mounting holes are formed in the connecting plates.

Through adopting above-mentioned technical scheme, the connecting plate passes through welded fastening with horizontal ring board, awl board, has further increased the joint strength between horizontal ring board and the awl board, prevents that the awl board from taking place to warp. When the bolt is installed, the bolt penetrates through the hole in the connecting plate to prevent the bolt from falling, and installation time is shortened.

The present invention in a preferred example may be further configured to: the pressure container comprises end sockets at two ends and a plurality of cylinders in the middle.

By adopting the technical scheme, the pressure container formed by welding the seal head and the cylinder body reduces the production requirement of the pressure container, and is convenient for batch production of the pressure container.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the fixed bolster is taken on the linking bridge for linking bridge plays the supporting role to the board and restraints, and the board is restrainted to the fixed mode of dismantling between linking bridge and the fixed bolster, is convenient for fix the board, makes the board restraint stably be located pressure vessel, and then receives pressure vessel's protection. The positioning device is arranged to prevent the plate bundle and the pressure container from shaking, and the plate bundle and the pressure container are stably fixed;

2. the spray pipe and the connecting pipe are installed in advance, the connecting pipe and the sealing pipe are further installed, the spray pipe inserted into the plate bundle is welded to the plate bundle, and the plate bundle and the spray pipe are fixed and sealed, so that stable material conveying of the spray pipe assembly is guaranteed, the stable connection of the spray pipe assembly is realized, and the installation is easy;

3. the conical plate provides a supporting force along the generatrix direction of the conical plate, the supporting force is further decomposed into component forces in the horizontal direction and the vertical direction, the resultant force of the component forces in the vertical direction is balanced with the gravity of a connected object, the pressure container is stably supported, the connection stability is ensured by the structure of the conical skirt, and the conical skirt is not easy to damage in the using process. Simultaneously, reinforcing plate, toper skirt form stable triangular support structure, prevent that toper skirt from taking place to damage in use, have further strengthened the structural strength of toper skirt.

Drawings

FIG. 1 is a schematic view of a heat exchanger;

FIG. 2 is a schematic view of a tapered skirt and a connecting plate in a heat exchanger;

FIG. 3 is an exploded view of a nozzle assembly in a heat exchanger;

fig. 4 is an exploded view of a heat exchanger.

Reference numerals: 1. plate bundle; 2. a pressure vessel; 21. sealing the end; 22. a barrel; 3. a fixing device; 31. fixing a bracket; 32. connecting a bracket; 4. a positioning device; 41. a guide rail; 411. mounting a plate; 412. a touch panel; 42. a guide plate; 5. a shower assembly; 51. a nozzle; 511. spraying a hole; 512. a first positioning hole; 52. a connecting pipe; 521. a hanger plate; 522. a first positioning post; 523. a second positioning column; 6. a tapered skirt; 61. a vertical ring plate; 62. a conical plate; 63. a horizontal ring plate; 631. mounting holes; 64. a reinforcing plate; 7. a feed outlet; 8. a fluid inlet; 9. a fluid outlet; 10. a manhole; 11. a recycle gas inlet; 12. a discharge port; 13. a vent hole; 14. an expansion joint; 15. a conical grid plate; 16. lifting lugs; 17. cleaning the connecting pipe; 18. a connecting plate; 181. a hole; 19. a sealing tube; 191. a second positioning hole; 20. a first gasket; 30. a second gasket; 40. and a third gasket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the heat exchanger disclosed in the present invention includes a pressure vessel 2 and a plate bundle 1 located in the pressure vessel 2, wherein the pressure vessel 2 is in the shape of a capsule, the plate bundle 1 is in the shape of a rectangular parallelepiped (as shown in fig. 3), and the plate bundle 1 is used for heat exchange of a fluid.

With reference to fig. 1, the pressure vessel 2 includes the end sockets 21 at two ends and the plurality of cylinders 22 between the end sockets 21, and the cylinders 22 are welded to the cylinders 22 and the end sockets 21, so that the production requirements of the pressure vessel 2 are reduced, and the pressure vessel 2 can be conveniently produced in batches. The outer surface of the pressure container 2 is welded with a fluid inlet 8, a fluid outlet 9, a material inlet and a material outlet which are communicated and sealed with the plate bundle 1, the fluid inlet 8 and the material outlet are positioned on one end socket 21, and a manhole 10 which is welded on the end socket 21 and communicated with the end socket 21 is arranged between the fluid inlet 8 and the material outlet, so that a worker can conveniently maintain the heat exchanger along the manhole 10. A vent hole 13 communicated with the seal head 21 is arranged among the fluid inlet 8, the material outlet and the manhole 10. The fluid outlet 9 is positioned on the other end enclosure 21, and a circulating gas inlet 11 and a circulating gas outlet 12 which are communicated with the end enclosure 21 are welded on the end enclosure 21. The feeding inlet, the fluid inlet 8 and the fluid outlet 9 are respectively connected with a cleaning connecting pipe 17, so that the plate bundle 1 can be cleaned regularly, and the heat exchange rate of the plate bundle 1 is ensured. The cylinder 22 is sleeved with a tapered skirt 6, and the tapered skirt 6 is positioned on one cylinder 22 close to the fluid outlet 9 and is used for being connected and fixed with a bracket, so that the tank body is stably positioned at a designated position.

With reference to fig. 1, a plurality of reinforcing ring plates located on the cylinder 22 are uniformly welded on the outer surface of the pressure vessel 2, and the reinforcing ring plates are arranged to reinforce the structural strength of the pressure vessel 2 and prevent the shell from being damaged in the using process.

With reference to fig. 2, the tapered skirt 6 includes a vertical ring plate 61 for sleeving the pressure vessel 2, a horizontal ring plate 63 for mounting on the support, a conical plate 62 for connecting the two, and a reinforcing plate 64 located on the conical plate 62, the horizontal ring plate 63 is provided with a mounting hole 631, one side of the reinforcing plate 64 facing the central line of the conical plate 62 is used for abutting against the pressure vessel 2, and a bolt passes through the mounting hole 631 and is fixed to the support for fixing the tapered skirt 6. Preferably, one end of the vertical ring plate 61 close to the horizontal ring plate 63 is integrally formed with one end of the conical plate 62, the other end of the conical plate 62 is located at the middle section of the horizontal ring plate 63, and the conical plate 62 is integrally formed with the horizontal ring plate 63, and the flaring of the conical skirt 6 faces the ground. The conical plate 62 provides supporting force along the generatrix direction of the conical plate 62, the supporting force is further decomposed into component force in the horizontal direction and component force in the vertical direction, resultant force of the component force in the vertical direction is balanced with gravity of a connecting object to fix the connecting object, the contact area of the vertical annular plate 61 and the connecting object is increased, the contact area of the horizontal annular plate 63 and a support is increased, the connection stability is guaranteed by the structure of the conical skirt seat 6, and the conical skirt seat is not easy to damage in the using process.

With reference to fig. 2, the side of the reinforcing plate 64 facing the center line of the conical plate 62 is used for abutting against the tank, and the reinforcing plate 64 and the conical skirt form a stable triangular support structure, so that the conical skirt 6 is prevented from being damaged in use, and the structural strength of the conical skirt is further enhanced. The conical plate 62 and the reinforcing plate 64 are integrally formed, so that the time loss of the fixed connection between the reinforcing plate 64 and the conical plate 62 is reduced, and the integrally formed conical skirt 6 can be massively produced. The reinforcement plate 64 is divided into two portions by the cone plate 62 to facilitate preventing deformation of the cone plate 62.

With reference to fig. 2, one side of the horizontal ring plate 63 facing the vertical ring plate 61 is uniformly fixed with a plurality of connecting plates 18 arranged in a T shape, and the connecting plates 18 are fixed with the horizontal ring plate 63 and the conical plate 62 by welding, so that the connecting strength between the horizontal ring plate 63 and the conical plate 62 is further increased, and the conical plate 62 is prevented from deforming. The connecting plate 18 of T type structure, the opening direction of connecting plate 18 sets up towards horizontal crown plate 63, and the hole 181 of keeping away from horizontal crown plate 63 in one side of connecting plate 18 and offering the hole with the mounting hole 631 coaxial line, passes hole 181, behind the mounting hole 631 in proper order through the bolt and fixes with the support, and when the construction bolt of being convenient for, the bolt passes the connecting hole and can prevent that the bolt from dropping for installation time.

Referring to fig. 3, the material inlet is disposed on the cylinder 22 and between the tapered skirt and the fluid outlet 9, the material inlet is provided as a shower assembly 5, the shower assembly 5 is connected to the plate bundle 1 and the pressure vessel 2, and the material enters the plate bundle 1 from the shower assembly 5 to exchange heat and is discharged from the material outlet. Shower subassembly 5 includes spray tube 51 that one end flange set up, the connecting pipe 52 of the two flange settings in both ends, pressure vessel 2 outer weld has the sealed tube 19 that is linked together and the one end flange setting with pressure vessel 2, spray tube 51's the other end is sealed and one side lateral wall has evenly seted up orifice 511, spray tube 51 inserts in sealed tube 19 and is connected with plate bundle 1, and spray tube 51 has the one end of orifice 511 to be located plate bundle 1, the one end and the spray tube 51 of connecting pipe 52, fixed connection can be dismantled through the bolt to sealed tube 19.

Referring to fig. 3, a hanging plate 521 is fixed on the periphery of a flange at one end of the connecting pipe 52, a hanging hole for hanging is formed in the hanging plate 521, the connecting pipe 52 is hung by a hanger, and the connecting pipe 52 is easily installed on the pressure vessel 2, so that labor consumption and accidents are saved.

Referring to fig. 3, a plurality of first through holes are uniformly formed in the flange of the nozzle 51, and a first slot corresponding to the first through holes is formed in the connecting pipe 52. The first through holes selected for use in this application are eight in number, and wherein a first locating hole 512 has been seted up between two adjacent first through holes, be fixed with protruding connecting pipe 52 surface on the connecting pipe 52 and with first locating hole 512 location fit's first locating post 522, first locating post 522 is located the one end that connecting pipe 52 has hanger plate 521, and first locating post 522 is located between the line of the axis of hanger plate 521 and connecting pipe 52. The connecting pipe 52 is hoisted, the first positioning hole 512 on the spray pipe 51 is matched with the first positioning column 522 of the connecting pipe 52 in a positioning way, the first through hole on the spray pipe 51 is basically matched with the first slotted hole on the connecting pipe 52 under the action of self gravity, and after the first bolt is fixed, the positions of the spray pipe 51 and the connecting pipe 52 are completely determined, so that the spray pipe 51 and the connecting pipe 52 can be conveniently and quickly installed.

With reference to fig. 3, a first sealing gasket 20 for sealing a gap between the nozzle 51 and the connecting pipe 52 is disposed between the nozzle and the connecting pipe, and the first sealing gasket 20 ensures the sealing property between the nozzle and the connecting pipe, thereby preventing the material from leaking from the joint between the nozzle and the connecting pipe.

Referring to fig. 3, the flange of the sealing pipe 19 is uniformly provided with a plurality of second through holes, and the connecting pipe 52 is provided with second slotted holes corresponding to the second through holes, so that the number of the second through holes is at least three to ensure the stability of connection. The number of the second through holes selected for use in this application is eight, and a second positioning hole 191 along the axial direction of the sealing tube 19 is disposed between two adjacent second through holes, and a second positioning column 523 protruding out of the surface of the connecting tube 52 and in positioning fit with the second sealing hole is fixed on the connecting tube 52. The second positioning hole 191 is located between the connecting line of the first positioning hole 512 and the hanging plate 521, the fixed connecting pipe 52, the nozzle 51 and the sealing pipe 19 are connected, the second positioning hole 191 and the second positioning column 523 are in positioning fit, so that under the action of self gravity, the second through hole in the sealing pipe 19 is basically matched with the second slotted hole in the connecting pipe 52, after the first bolt is fixed, the positions of the sealing pipe 19 and the connecting pipe 52 are completely determined, and the sealing pipe 19 and the connecting pipe 52 are convenient to install quickly.

With reference to fig. 3, a second gasket 30 for sealing a gap between the sealing tube 19 and the connecting tube 52 is disposed between the sealing tube 19 and the connecting tube 52, the second gasket 30 ensures the sealing performance between the sealing tube and the connecting tube, and the first gasket 20 is used to ensure the pressure balance in the pressure vessel 2 and the protection of the heat exchanger of the plate bundle 1.

Referring to fig. 3, after the nozzle 51, the connection pipe 52, and the seal pipe 19 are fixed, the nozzle 51 inserted into the plate bundle 1 is welded to the plate bundle 1, and the plate bundle 1 and the nozzle 51 are sealed. The spray holes 511 on the spray pipe 51 are in a vertically upward state, which facilitates the uniform distribution of the material in the plate bundle 1. Two expansion joints 14 are fixed on the spray pipe 51 between the plate bundle 1 and the pressure container 2, and meanwhile, the expansion joints 14 are also arranged on the pipelines of the feeding outlet 7, the fluid inlet 8 and the fluid outlet 9, so that when the pipeline expands with heat and contracts with cold, the expansion of the pipeline is facilitated to compensate, and further the influence of additional stress is eliminated.

Referring to fig. 3, the tapered grid plate 15 is installed at one end of the connecting pipe 52 far from the nozzle 51, and a uniform microporous structure is formed on the surface of the tapered grid plate 15, so that the material introduced into the plate bundle 1 is filtered, the pollution of the material to the plate bundle 1 is reduced, and the normal operation of the plate bundle 1 is ensured. The setting of toper grid plate 15 increases the area of contact of material, strengthens the filter effect to the material, crosses the extension to the clearance time cycle of toper grid plate 15. A third sealing gasket 40 for sealing the gap between the conical grid plate 15 and the connecting pipe 52 is arranged between the conical grid plate 15 and the connecting pipe 52, so that unfiltered materials are prevented from entering the plate bundle 1 from the gap between the conical grid plate 15 and the connecting pipe 52.

With reference to fig. 4, one end of the plate bundle 1 is provided with a fixing device 3 connected with the pressure vessel 2, the fixing device 3 includes a fixing support 31 and a connecting support 32 which are horizontal, the connecting support 32 is welded at one end of the pressure vessel 2 inside near the feeding outlet 7, the fixing support 31 is welded on the plate bundle 1 and corresponds to the connecting support 32, the fixing support 31 is used for being lapped at one side of the connecting support 32 near the feeding outlet 7, and the fixing support 31 and the connecting support 32 are detachably and fixedly connected through bolts. The number of the fixing brackets 31 in this application is two, and the fixing brackets are respectively located on two opposite side surfaces of the plate bundle 1.

Referring to fig. 4, the fixing bracket 31 is composed of a first horizontal plate and a first vertical plate fixed to the first horizontal plate, and the first vertical plate is disposed perpendicular to the surface of the plate bundle 1. The number of the first vertical plates is four, the first vertical plates are symmetrically distributed along the bisection plane of the first horizontal plate, and one side, facing the plate bundle 1, of each first vertical plate is welded on the plate bundle 1, so that the connecting structure between the fixing support 31 and the plate bundle 1 is guaranteed, and the fixing support 31 and the plate bundle 1 are prevented from being damaged.

Referring to fig. 4, the connecting bracket 32 is composed of a second horizontal plate and a second vertical plate fixed on the second horizontal plate, and the second vertical plate is disposed in parallel with each other and symmetrically distributed along the bisector plane of the second horizontal plate. The number of the second vertical plates is four, one surface of the second vertical plate, which deviates from the plate bundle 1, is welded on the pressure container 2, so that the connection strength between the connecting bracket 32 and the pressure container 2 is ensured, and the connecting bracket 32 and the pressure container 2 are prevented from being damaged. The fixed welding of the one end that the vertical board of second kept away from the second horizontal plate has the circular arc board that is the level form, prevents that the vertical board of second from producing the deformation when the welding.

With reference to fig. 4, a positioning device 4 for positioning the plate bundle 1 is disposed at an end of the pressure vessel 2 close to the fluid outlet 9, the positioning device 4 includes a guide rail 41 disposed on the plate bundle 1 and a guide plate 42 disposed on the pressure vessel 2, the guide rail 41 and the guide plate 42 are abutted against one side of the connecting bracket 32, and are matched with the connecting bracket 32 and the fixing bracket 31 for fixing the positions of the plate bundle 1 and the pressure vessel 2, and in the using process, relative shaking is not generated, and the installation time is saved.

With reference to fig. 4, the guide rail 41 is a T-shaped column, the guide rail 41 includes a mounting plate 411 along the length direction of the plate bundle 1 and a contact plate 412 abutting against the guide plate 42, the contact plate 412 is located on one side of the mounting plate 411 departing from the plate bundle 1, and therefore the guide rail 41 is prevented from being welded on the plate bundle 1, and the impact of the welding spot on the mounting plate and the guide plate 42 is avoided.

Referring to fig. 4, lifting lugs 16 for lifting the pressure vessel 2 are detachably fixed on the feeding outlet 7 and the fluid inlet 8 through bolts, and in the conveying process, the lifting lugs 16 are fixed on the feeding outlet 7 and the fluid inlet 8 to seal the feeding outlet 7 and the fluid inlet 8, so that dust is prevented from entering the plate bundle 1 and causing pollution. The lifting lug 16 can be reused, and the resource can be reused. The pressure vessel 2 is welded with a manhole 10 between the feeding outlet 7 and the fluid outlet 9, and the manhole 10 is communicated with the pressure vessel 2, so that a worker can conveniently maintain the heat exchanger along the manhole 10.

The implementation principle of the invention is as follows:

fixed bolster 31 is taken on linking bridge 32 for linking bridge 32 plays the supporting role to plate bundle 1, and the fixed mode of dismantling between linking bridge 32 and the fixed bolster 31 is convenient for fix plate bundle 1, makes plate bundle 1 stably be located pressure vessel 2, and then receives pressure vessel 2's protection. The positioning device 4 prevents the plate bundle 1 and the pressure vessel 2 from shaking and stably fixes the plate bundle and the pressure vessel.

The spray pipe 51 and the connecting pipe 52 are installed in advance, the connecting pipe 52 and the sealing pipe 19 are further installed, the spray pipe 51 inserted into the plate bundle 1 is welded to the plate bundle 1, and the plate bundle 1 and the spray pipe 51 are fixed and sealed, so that stable material conveying of the spray pipe assembly 5 is guaranteed, meanwhile, the spray pipe assembly 5 is stably connected, and the installation is easy;

the conical plate 62 provides a supporting force along the generatrix direction of the conical plate 62, the supporting force is further decomposed into component forces in the horizontal direction and the vertical direction, the resultant force of the component forces in the vertical direction is balanced with the gravity of a connected object, the pressure container 2 is stably supported, the structure of the conical skirt 6 ensures the stability of connection, and the conical skirt is not easy to damage in the using process. Meanwhile, the reinforcing plate 64 and the tapered skirt belt form a stable triangular support structure, so that the tapered skirt 6 is prevented from being damaged in use, and the structural strength of the tapered skirt belt is further enhanced.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A heat exchanger comprises a pressure vessel (2) and a plate bundle (1) positioned in the pressure vessel (2), wherein a feeding inlet, a feeding outlet (7), a fluid inlet (8) and a fluid outlet (9) which are communicated with the plate bundle (1) are connected to the pressure vessel (2), and the heat exchanger is characterized in that: be provided with expansion joint (14) on feeding entry, feeding outlet (7), fluid entry (8), fluid outlet (9), the one end of board bundle (1) is provided with fixing device (3) of being connected with pressure vessel (2), fixing device (3) are including fixed bolster (31), linking bridge (32) that are the level form, fixed bolster (31), linking bridge (32) weld respectively on board bundle (1), pressure vessel (2), fixed bolster (31) are taken on linking bridge (32), fixed connection can be dismantled to fixed bolster (31) and linking bridge (32) bolt, the other end of board bundle (1) and pressure vessel (2) is provided with respectively and is used for carrying out positioner (4) fixed a position board bundle (1), pressure vessel (2).

2. The heat exchanger of claim 1, wherein: the positioning device (4) comprises a guide rail (41) and a guide plate (42), the guide rail (41) is arranged on the plate bundle (1) and the guide plate (42) is arranged on the pressure container (2), and the guide rail (41) and one side, deviating from the connecting support (32), of the guide plate (42) are abutted.

3. The heat exchanger of claim 1, wherein: the feeding device is characterized in that the feeding device is arranged as a spraying pipe assembly (5), the spraying pipe assembly (5) comprises a spraying pipe (51) with one end flange arranged and a connecting pipe (52) with two flanges at two ends, a sealing pipe (19) which is communicated with a pressure container (2) and one end flange arranged is arranged outside the pressure container (2), the spraying pipe (51) is inserted into the sealing pipe (19) and is connected with a plate bundle (1), one end of the spraying pipe (51) with a spraying hole (511) is located in the plate bundle (1), and one end of the connecting pipe (52) is detachably and fixedly connected with the spraying pipe (51) and the sealing pipe (19) through bolts.

4. The heat exchanger of claim 3, wherein: the connecting pipe (52) is provided with a hanging plate (521), the hanging plate (521) is provided with a hanging hole, and the connecting pipe (52) is welded with a first positioning column (522) and a second positioning column (523) which are matched with the spray pipe (51) and the sealing pipe (19) in a positioning manner.

5. The heat exchanger of claim 3, wherein: one end of the connecting pipe (52) far away from the spray pipe (51) is provided with a conical grid plate (15).

6. The heat exchanger of claim 1, wherein: the feeding outlet (7) and the fluid inlet (8) are arranged at one end, close to the connecting support (32), of the pressure vessel (2), the fluid outlet (9) is arranged at the other end of the pressure vessel (2), and lifting lugs (16) used for lifting the pressure vessel (2) are detachably arranged on the feeding outlet (7) and the fluid inlet (8).

7. The heat exchanger of claim 6, wherein: the feeding outlet (7), the fluid inlet (8) and the fluid outlet (9) are respectively connected with a cleaning connecting pipe (17).

8. The heat exchanger of claim 1, wherein: the bottom of pressure vessel (2) is provided with toper skirt (6), toper skirt (6) including be used for the cover to establish vertical crown plate (61) on pressure vessel (2), be used for carrying on horizontal crown plate (63) on the support, connect both conical plate (62) and be located reinforcing plate (64) on conical plate (62), mounting hole (631) have been seted up on horizontal crown plate (63), reinforcing plate (64) are used for with pressure vessel (2) butt towards one side of conical plate (62) central line.

9. The heat exchanger of claim 8, wherein: horizontal crown plate (63) are provided with a plurality of connecting plates (18) that are the T type towards one side of vertical crown plate (61), connecting plate (18) are connected with horizontal crown plate (63), taper plate (62), set up on connecting plate (18) and link up hole (181) mutually with mounting hole (631).

10. The heat exchanger of any one of claims 1 to 9, wherein: the pressure container (2) comprises seal heads (21) at two ends and a plurality of cylinders (22) in the middle.