CN219377078U

CN219377078U - Corrosion-resistant reaction tube in laboratory

Info

Publication number: CN219377078U
Application number: CN202320526158.7U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shanghai Yanzheng Experimental Instrument Co ltd
Current assignee: Shanghai Yanzheng Experimental Instrument Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-07-21
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a laboratory corrosion-resistant reaction tube, which comprises a spherical sealing rod assembly and a reaction tube assembly, wherein the reaction tube assembly comprises a reaction tube body, the reaction tube body is of a hollow structure, a lining is arranged in the reaction tube body, two ends of the lining exceed two ends of the reaction tube body, two ends of the reaction tube body are respectively fixedly provided with a welding joint, a hard sealing upper joint is connected with a welding joint above, a hard sealing lower joint, a sealing nut and an outlet joint are fixedly connected, the bottom of the hard sealing lower joint is connected with the outlet joint, the top of the lining is connected with the hard sealing upper joint, the bottom of the lining is connected with the hard sealing lower joint, an inlet joint is connected with the hard sealing upper joint above the reaction tube body, and the top of the hard sealing upper joint is connected with the inlet joint.

Description

Corrosion-resistant reaction tube in laboratory

Technical Field

The utility model relates to the technical field of reaction tubes, in particular to a laboratory corrosion-resistant reaction tube.

Background

In the laboratory catalyst development process, a reaction tube is required, and currently, a laboratory reaction tube is usually made of 316L (HC 276, titanium, inconel alloy, etc.) material, 310S material, or quartz glass material. However, existing reactor tubes typically suffer from the following drawbacks:

1. the reaction tube is made of 316L (HC 276, titanium, inconel alloy and the like) materials, and the reaction tube is not resistant to high temperature;

2. the reaction tube is made of 310S material, and the reaction tube is not corrosion-resistant;

3. the reaction tube is made of quartz glass, and the reaction tube is not pressure-resistant.

Disclosure of Invention

The utility model aims to provide a laboratory corrosion-resistant reaction tube, which overcomes the defect that the reaction tube is not corrosion-resistant in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a laboratory corrosion-resistant reaction tube, including sphere sealing rod subassembly and reaction tube subassembly, the reaction tube subassembly includes the reaction tube body, the reaction tube body is hollow structure, this internal inside lining that is equipped with of reaction tube, the both ends of inside lining surpass the both ends of reaction tube body, the both ends of reaction tube body are fixed with welded joint respectively, the welded joint of hard seal top and top is connected, hard seal bottom, gland nut and outlet connection fixed connection, the bottom and the outlet connection of hard seal bottom are connected, the top and the hard seal top of inside lining are connected, the bottom and the hard seal bottom of inside lining are connected, the access connection is connected with the hard seal top that is located the reaction tube body top, the top of hard seal top is connected with the access connection.

Preferably, the welded joint is fastened and connected with the hard sealing upper joint through a sealing nut.

Preferably, the catalyst support plate is positioned in the lining, and the catalyst support plate is flush with the bottom of the lining.

Preferably, the welding joint further comprises a graphite pressing sheet and a graphite gasket, wherein the graphite pressing sheet and the graphite gasket are both sleeved on the lining, the graphite pressing sheet is positioned above the graphite gasket, the graphite pressing sheet is positioned below the hard seal upper joint, and the graphite pressing sheet and the graphite gasket are positioned in the welding joint.

Preferably, the welding joint comprises a guide sleeve part and a connecting part, the outer side and the inner side of the connecting part are both provided with threaded structures, the upper end of the guide sleeve part is provided with a mounting hole, the lower end of the guide sleeve part is provided with a reaction tube body mounting groove and a lining mounting groove, and the graphite pressing sheet is in threaded connection with the connecting part.

Preferably, the upper hard seal joint and the lower hard seal joint are hollow structures, the upper hard seal joint comprises a first connector, a fixed head and a second connector, the fixed head is connected with the first connector and the second connector, the first connector faces the inner lining, the diameter of the fixed head is larger than that of the second connector, the diameter of the second connector is larger than that of the first connector, the lower hard seal joint comprises a first connector, a fixed head and a third connector, the diameter of the third connector is equal to that of the second connector, the length of the third connector is larger than that of the second connector, and the outlet joint is connected with the third connector.

Preferably, the lining is made of quartz.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through redesigning, the structure of the reaction tube is changed, sealing is realized, and meanwhile, inert gas is introduced, so that the corrosion resistance is realized.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic view of a welded joint according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another view of a welded joint according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a graphite preform according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a hard seal top sub according to an embodiment of the present utility model;

FIG. 8 is a schematic view of another view of a hard seal top sub according to one embodiment of the present utility model;

FIG. 9 is a schematic view of a hard seal lower joint according to an embodiment of the present utility model;

FIG. 10 is a schematic view of another view of a hard seal sub according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in the figure, the utility model discloses a laboratory corrosion-resistant reaction tube, which comprises a spherical sealing rod assembly and a reaction tube assembly, wherein the reaction tube assembly comprises a reaction tube body 2, the reaction tube body 2 is of a hollow structure, a lining 8 is arranged in the reaction tube body 2, two ends of the lining 8 exceed two ends of the reaction tube body 2, two ends of the reaction tube body 2 are respectively fixed with a welding joint 1, a hard sealing upper joint 4 is connected with the welding joint 1 above, a hard sealing lower joint 6, a sealing nut 5 and an outlet joint 7 are fixedly connected, the bottom of the hard sealing lower joint 6 is connected with the outlet joint 7, the top of the lining 8 is connected with the hard sealing upper joint 4, the bottom of the lining 8 is connected with the hard sealing lower joint 6, an inlet joint 3 is connected with the hard sealing upper joint 4 above the reaction tube body 2, and the top of the hard sealing upper joint 4 is connected with the inlet joint 3. The material can be 310s heat-resistant stainless steel, which has high temperature resistance, and the stainless steel can bear certain pressure at high temperature.

Liner 8 serves to isolate the corrosive medium. The inlet fitting 3 is filled with inert gas. The inert gas protects the reactor body 2 and the quartz lining 8 from corrosive medium. The inert gas is discharged from the outlet connection 7. The quartz liner itself may also be corrosion resistant.

In one embodiment of the utility model, the weld joint 1 is securely connected to the hard seal upper joint 4 by means of a seal nut 5.

In one embodiment of the present utility model, the catalyst support plate 11 is further included, the catalyst support plate 11 is located in the inner liner 8, and the catalyst support plate 11 is flush with the bottom of the inner liner 8. The catalyst support plate 11 is used for catalytic reaction.

In an embodiment of the present utility model, the welding joint further comprises a graphite pressing sheet 9 and a graphite gasket 10, wherein the graphite pressing sheet 9 and the graphite gasket 10 are sleeved on the inner lining 8, the graphite pressing sheet 9 is positioned above the graphite gasket 10, the graphite pressing sheet 9 is positioned below the hard sealing upper joint 4, and the graphite pressing sheet 9 and the graphite gasket 10 are positioned in the welding joint 1.

By screwing the graphite pressing sheet 9, the sealing of the compressed graphite gasket 10, the reaction tube body 2 and the lining 8 is realized.

In an embodiment of the present utility model, the welding joint 1 includes a guide sleeve portion 101 and a connecting portion 102, the outer side and the inner side of the connecting portion 102 are both provided with a threaded structure, the upper end of the guide sleeve portion 101 is provided with a mounting hole 103, the lower end of the guide sleeve portion 101 is provided with a reaction tube body mounting groove 104 and a lining mounting groove 105, and the graphite pressing sheet 9 is in threaded connection with the connecting portion 102. The welded joint 1 serves as a fixed connection.

In one embodiment of the present utility model, the material of the liner 8 is quartz.

In an embodiment of the present utility model, the upper hard seal joint 4 and the lower hard seal joint 6 are hollow structures, the upper hard seal joint 4 includes a first connector 41, a fixed head 42 and a second connector 43, the fixed head 42 connects the first connector 41 and the second connector 43, the first connector 41 faces the liner 8, the fixed head 42 has a larger diameter than the second connector 43, the second connector 43 has a larger diameter than the first connector 41, the lower hard seal joint 6 includes a first connector 41, a fixed head 42 and a third connector 44, the third connector 44 has a diameter equal to the second connector 43, the third connector 44 has a length larger than the second connector 43, and the outlet connector 7 is connected with the third connector 44. The fixing head 42 is clamped between the sealing nut 5 and the graphite pressing sheet 9, and the fixing head 42 plays a role of being clamped and fixed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A laboratory corrosion resistant reaction tube, characterized in that: including sphere sealing rod subassembly and reaction tube subassembly, reaction tube subassembly includes reaction tube body (2), reaction tube body (2) are hollow structure, be equipped with inside lining (8) in reaction tube body (2), the both ends of inside lining (8) surpass the both ends of reaction tube body (2), the both ends of reaction tube body (2) are fixed with welded joint (1) respectively, the welded joint (1) of hard sealed upper joint (4) and top are connected, hard sealed lower joint (6), gland nut (5) and outlet connection (7) fixed connection, the bottom of hard sealed lower joint (6) is connected with outlet connection (7), the top of inside lining (8) is connected with hard sealed upper joint (4), the bottom of inside lining (8) is connected with hard sealed lower joint (6), inlet connection (3) are connected with the hard sealed upper joint (4) that are located reaction tube body (2) top, the top of hard sealed upper joint (4) is connected with inlet connection (3).

2. A laboratory corrosion-resistant reaction tube according to claim 1, wherein: the welding joint (1) is tightly connected with the hard sealing upper joint (4) through a sealing nut (5).

3. A laboratory corrosion-resistant reaction tube according to claim 1, wherein: the catalyst support plate (11) is positioned in the lining (8), and the catalyst support plate (11) is flush with the bottom of the lining (8).

4. A laboratory corrosion-resistant reaction tube according to claim 1, wherein: still include graphite preforming (9) and graphite gasket (10), graphite preforming (9) and graphite gasket (10) are all overlapped on lining (8), and graphite preforming (9) are located the top of graphite gasket (10), and graphite preforming (9) are located the below of hard seal top connection (4), and graphite preforming (9) and graphite gasket (10) are located welded joint (1).

5. A laboratory corrosion-resistant reaction tube according to claim 4, wherein: the welding joint (1) comprises a guide sleeve part (101) and a connecting part (102), wherein the outer side and the inner side of the connecting part (102) are respectively provided with a thread structure, the upper end of the guide sleeve part (101) is provided with a mounting hole (103), the lower end of the guide sleeve part (101) is provided with a reaction tube body mounting groove (104) and a lining mounting groove (105), and the graphite pressing sheet (9) is in threaded connection with the connecting part (102).

6. A laboratory corrosion-resistant reaction tube according to claim 1, wherein: the lining (8) is made of quartz.

7. A laboratory corrosion-resistant reaction tube according to claim 1, wherein: the hard seal upper joint (4) and the hard seal lower joint (6) are of hollow structures, the hard seal upper joint (4) comprises a first connector (41), a fixed head (42) and a second connector (43), the fixed head (42) is connected with the first connector (41) and the second connector (43), the first connector (41) faces the inner lining (8), the diameter of the fixed head (42) is larger than that of the second connector (43), the diameter of the second connector (43) is larger than that of the first connector (41), the hard seal lower joint (6) comprises a first connector (41), a fixed head (42) and a third connector (44), the diameter of the third connector (44) is equal to that of the second connector (43), the length of the third connector (44) is larger than that of the second connector (43), and the outlet connector (7) is connected with the third connector (44).