High-temperature gas phase plate heat exchanger for pyrolysis gas

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a high-temperature gas-phase plate heat exchanger for pyrolysis gas, which comprises a heat exchanger body, and a bottom plate is arranged at the lower end of the heat exchanger body and used for mounting and fixing the heat exchanger. A plurality of inlet pipes are arranged at one end of the heat exchanger body, and external pipes which are clamped with the inlet pipes and are convenient to disassemble and assemble are arranged in the inlet pipes and are used for conveying external materials to be cooled. The elastic clamping piece is installed on the inlet pipe and matched with the fixing hole in the external pipe, the inlet pipe and the external pipe are clamped and fixed, then the external pipe is convenient to install and detach, operation is simple and convenient, and meanwhile, the inner groove, the outer groove and the sealing ring are matched, so that the sealing performance of the inner groove, the outer groove and the sealing ring after the outer groove and the outer groove are connected in an inserted mode is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, concretely relates to a high temperature gas phase plate heat exchanger for cracking gas. BACKGROUND

[0002] Cracking gas mainly refers to the gas mixture generated under high temperature and high pressure conditions. Its principle is to use cracking reaction to crack long-chain hydrocarbon molecules into short-chain alkanes and non-alkanes. There are mainly two methods for hydrocarbon cracking: one is alkane cracking, that is, using catalytic reaction to crack alkane substances; the other is hydrocarbon steam cracking process, that is, using hydrocarbon steam as reaction medium to decompose hydrocarbon molecules into oligomers. Heat exchangers are used in the process of cracking gas, and plate heat exchanger as a common heat exchange equipment has the advantages of compact structure and high heat exchange efficiency, which can meet the requirements of cracking gas for heat exchanger. However, the current connection mode of the inlet of plate heat exchanger and external system generally depends on bolt fastening, and sealing elements are supplemented to ensure the sealing. Since the plate heat exchanger needs to contain materials and cooling liquid at the same time and promote the circulation of the two in its interior, the port design is often more complex. This feature directly leads to the use of a large number of bolts, which not only increases the workload in the fastening process, but also makes the subsequent disassembly and installation process more complicated. Therefore, the technical personnel in the field provide a high-temperature gas-phase plate heat exchanger for cracking gas to solve the problems raised in the above background technology. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a high-temperature gas-phase plate heat exchanger for cracking gas, which comprises a heat exchanger body, a bottom plate is arranged at the lower end of the heat exchanger body, and the bottom plate is used for mounting and fixing the heat exchanger.

[0004] One end of the heat exchanger body is provided with a plurality of inlet pipes, an external connecting pipe is installed in the inlet pipe and is detachably connected with the inlet pipe, and the external connecting pipe is used for conveying external materials to be cooled.

[0005] Preferably, the inlet pipe is provided with two inlet pipes corresponding to each other with respect to the center of the heat exchanger body, and the two inlet pipes respectively form a material channel and a heat dissipation channel.

[0006] Preferably, a plurality of through holes are arranged on the inner side of the inlet pipe at equal intervals, a clamping piece is arranged in the through hole, and the inlet pipe is clamped and fixed with the external connecting pipe through the clamping piece.

[0007] Preferably, a plurality of inner grooves along the length direction of the inlet pipe are arranged on the front side of the through hole in the inlet pipe, and the cross section of the inner groove is semicircular.

[0008] Preferably, the clamping piece comprises a clamping rod, a top plate is arranged at the top of the clamping rod, a spring is sleeved on the clamping rod, the top of the spring is connected with the top plate, and the bottom of the spring is connected with the outer side wall of the inlet pipe.

[0009] Preferably, the bottom of the clamping rod is provided with a limiting plate, the bottom of the limiting plate is provided with a limiting rod, the limiting rod is inserted into the through hole, and the limiting rod is in sliding connection with the through hole.

[0010] Preferably, the outer side wall of the external pipe is provided with a fixing hole corresponding to the through hole, and the outer side wall of the external pipe is provided with an outer groove corresponding to the inner groove.

[0011] The technical effects and advantages of the utility model are as follows:

[0012] In the utility model, the elastic clamping piece is installed on the inlet pipe, the clamping piece is matched with the fixing hole on the external pipe, the clamping and fixing between the inlet pipe and the external pipe are formed, the installation and dismounting of the external pipe are facilitated, the operation is simple and convenient, meanwhile, the cooperation of the inner groove, the outer groove and the sealing ring ensures the sealing property after the insertion of the two. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structure schematic view of a high-temperature gas phase plate heat exchanger for cracked gas provided by the embodiment of the application;

[0014] Figure 2 is a side view of a high-temperature gas phase plate heat exchanger for cracked gas provided by the embodiment of the application;

[0015] Figure 3 is a partial explosion view of a high-temperature gas phase plate heat exchanger for cracked gas provided by the embodiment of the application;

[0016] Figure 4 is a sectional view of an inlet pipe in a high-temperature gas phase plate heat exchanger for cracked gas provided by the embodiment of the application;

[0017] Figure 5 is a structure schematic view of a clamping piece in a high-temperature gas phase plate heat exchanger for cracked gas provided by the embodiment of the application.

[0018] In the drawings:

[0019] 1, heat exchanger body; 2, bottom plate; 3, inlet pipe; 4, external pipe; 31, inner groove; 32, through hole; 33, clamping piece; 331, clamping rod; 332, spring; 333, limiting rod; 41, outer groove; 42, sealing ring; 43, fixing hole. DETAILED DESCRIPTION

[0020] The embodiments of the present application are presented by way of example and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application in order to design various embodiments with various modifications for specific use cases. Embodiments

[0021] Please refer to Figures 1-5 In the present embodiment, a high-temperature gas phase plate heat exchanger for cracking gas is provided, which comprises a heat exchanger body 1, the lower end of the heat exchanger body 1 is provided with a bottom plate 2, the bottom plate 2 is used to realize the installation and fixation of the whole heat exchanger, and a plurality of inlet pipes 3 are arranged at one end of the heat exchanger body 1, in the present application, the inlet pipes 3 are provided with four, wherein, the two inlet pipes 3 corresponding to each other at the center of the heat exchanger body 1 respectively constitute a material channel and a heat dissipation channel, the two inlet pipes 3 in the material channel input the material to be cooled from one pipe opening and discharge from the other pipe opening, the material is cooled in the heat exchanger, and in the heat dissipation channel, the cooling liquid is input from one pipe opening and discharged from the other pipe opening, forming a circulation, thereby achieving the effect of cooling;

[0022] The external connecting pipe 4 is installed in the inlet pipe 3, and the external connecting pipe 4 and the inlet pipe 3 are clamped and fixed, so that the installation of the external connecting pipe 4 is facilitated, and the disassembly of the external connecting pipe 4 is also facilitated, compared with the bolt tightening mode in the prior art, the operation is more convenient, and the installation and disassembly efficiency is higher;

[0023] Among them, in the inlet pipe 3, a plurality of through holes 32 distributed at equal intervals are formed on the side arm, a clamping piece 33 is arranged in the through hole 32, the inlet pipe 3 is clamped and fixed with the external connecting pipe 4 through the clamping piece 33, and a plurality of inner grooves 31 along the length direction are formed on the front side of the through hole 32 in the inlet pipe 3, the cross section of the inner groove 31 is semicircular, which can increase the sealing property between the inlet pipe 3 and the external connecting pipe 4, and avoid the occurrence of leakage;

[0024] The clamping piece 33 comprises a clamping rod 331, a top plate is arranged at the top of the clamping rod 331, a spring 332 is sleeved on the clamping rod 331, the top of the spring 332 is connected with the top plate, the bottom of the spring 332 is connected with the outer side wall of the inlet pipe 3, the spring 332 has a pulling force to the clamping rod 331 to the side of the inlet pipe 3, a limiting plate is arranged at the bottom of the clamping rod 331, a limiting rod 333 is arranged at the bottom of the limiting plate and inserted into the through hole 32, the limiting rod 333 and the through hole 32 are slidingly connected, the limiting plate has a limiting effect, so that the clamping rod 331 cannot enter the through hole 32, and a smooth inclined surface is arranged at the bottom of the limiting rod 333 and towards the inlet end of the inlet pipe 3, so that the external connecting pipe 4 can be easily inserted;

[0025] The outer side wall of the outer connecting pipe 4 is provided with a fixing hole 43 corresponding to the through hole 32, during installation, the outer connecting pipe 4 is directly inserted into the inlet pipe 3, when the outer connecting pipe 4 moves towards the inlet pipe 3, it will first contact the inclined surface and have extrusion force on the inclined surface, due to the effect of the inclined surface, the limiting rod 333 will move towards the outside of the inlet pipe 3 under the extrusion force and stretch the spring 332, after the outer connecting pipe 4 continues to move, the fixing hole 43 corresponds to the through hole 32, then the limiting rod 333 will enter the fixing hole 43, realizing clamping and fixing between the two, convenient installation, conversely, pulling the clamping rod 331 towards the outside, the limiting rod 333 can be separated from the fixing hole 43, facilitating the dismounting of the outer connecting pipe 4;

[0026] The outer side wall of the outer connecting pipe 4 is provided with an outer groove 41 corresponding to the inner groove 31, the cross section of the outer groove 41 is also semicircular, the sealing ring 42 is arranged in the outer groove 41, the annular groove formed by the inner groove 31 and the outer groove 41 and the sealing ring 42 cooperates, realizing sealing.

[0027] In the utility model, the clamping piece 33 with specific elasticity is arranged on the inlet pipe 3, which cooperates with the fixing hole 43 on the outer connecting pipe 4, forming clamping and fixing between the inlet pipe 3 and the outer connecting pipe 4, further facilitating the installation and dismounting of the outer connecting pipe 4, simple operation, meanwhile, the cooperation of the inner groove 31, the outer groove 41 and the sealing ring 42 ensures the sealing performance after the two are inserted.

[0028] Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art and related fields without creative labor should belong to the protection scope of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model, if no special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A high temperature gas phase plate heat exchanger for pyrolysis gas, characterized in that, The heat exchanger body (1) is provided with a bottom plate (2) at the lower end, which is used for fixing the heat exchanger; The heat exchanger body (1) is provided with a plurality of inlet pipes (3) at one end, and an external connecting pipe (4) is installed in the inlet pipe (3) and is detachably connected with the inlet pipe (3), and the external connecting pipe (4) is used for conveying external materials to be cooled.

2. A high temperature gas phase plate heat exchanger for pyrolysis gas according to claim 1, characterized in that, The inlet pipe (3) is provided with four inlet pipes (3), and the two inlet pipes (3) corresponding to the center of the heat exchanger body (1) respectively form a material channel and a heat dissipation channel.

3. A high temperature gas phase plate heat exchanger for pyrolysis gas according to claim 2, characterized in that, The inner side of the inlet pipe (3) is provided with a plurality of through holes (32) distributed at equal intervals, and the through holes (32) are provided with a clamping piece (33), and the inlet pipe (3) is clamped and fixed with the external connecting pipe (4) through the clamping piece (33).

4. A high temperature gas phase plate heat exchanger for pyrolysis gas according to claim 3, characterized in that, The front side of the through hole (32) in the inlet pipe (3) is provided with a plurality of inner grooves (31) along the length direction, and the cross section of the inner groove (31) is semicircular.

5. A high temperature gas phase plate heat exchanger for pyrolysis gas according to claim 3, characterized in that, The clamping piece (33) includes a clamping rod (331), a top plate is arranged at the top of the clamping rod (331), a spring (332) is sleeved on the clamping rod (331), the top of the spring (332) is connected with the top plate, and the bottom of the spring (332) is connected with the outer side wall of the inlet pipe (3).

6. A high temperature gas phase plate heat exchanger for pyrolysis gas according to claim 5, characterized in that, The bottom of the clamping rod (331) is provided with a limiting plate, the bottom of the limiting plate is provided with a limiting rod (333), the limiting rod (333) is inserted into the through hole (32), and the two are slidingly connected, and the bottom of the limiting rod (333) is provided with a smooth inclined surface toward one end of the inlet of the inlet pipe (3).

7. A high temperature gas phase plate heat exchanger for pyrolysis gas according to claim 3, characterized in that, The outer side wall of the external connecting pipe (4) is provided with a fixing hole (43) corresponding to the through hole (32), and the outer side wall of the external connecting pipe (4) is provided with an outer groove (41) corresponding to the inner groove (31), the cross section of the outer groove (41) is semicircular, and the outer groove (41) is provided with a sealing ring (42), and the sealing ring (42) and the inner groove (31) and the outer groove (41) are matched to form an annular groove.

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