A kind of m-nitrotrifluorotoluene synthetic sealed pipeline connecting pipe fitting and process

Abstract

The present invention relates to the field of pipeline connection, and in particular to a m-nitrotrifluorotoluene synthetic sealed pipeline connection pipe fitting and process, comprising two pipelines fixed to the lower end of a work platform, a stepped pipe being provided between the opposite ends of the two pipelines, a sealing cap being coaxially extended at one end of the stepped pipe, an adaptable pipe being coaxially slidably installed inside the sealing cap, a sealing member being provided between the adaptable pipe and the sealing cap, a slot pipe being coaxially inlaid at one end of the adaptable pipe and the other end of the stepped pipe, the opposite ends of the two pipelines being respectively inserted into the interiors of the two slot pipes, a No. 1 sealing ring being provided on the inner surface of the slot pipe, the No. 1 sealing ring being pressed against the inner surface of the pipeline, and the No. 1 sealing ring being hollow. The present invention can connect pipelines that do not have a connection structure and can reinforce the pipelines after connection, effectively meeting the use requirements and also being convenient to use.

Description

Technical Field

[0001] The present invention relates to the field of pipeline connection, in particular to a m-nitrotrifluorotoluene synthetic sealed pipeline connection pipe fitting and a process. Background Art

[0002] When using a reactor to synthesize m-nitrotrifluorotoluene, a sealed pipe is generally required to transport the material. At the same time, in order to facilitate the operation of the reactor, the reactor is mostly installed on a work platform, and the sealed pipe will be hoisted and fixed under the work platform to ensure that the pipe will not shake during transportation.

[0003] When connecting two pipes, a connecting pipe is required. However, most existing connecting pipes are installed using flanges or threads. When connecting pipes that do not have a connection structure at the connection end, the connecting pipe cannot be installed, resulting in the pipes being unable to connect. At the same time, existing connecting pipes only have the function of connecting pipes, which is single-purpose and cannot meet the needs of use. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a m-nitrotrifluorotoluene synthetic sealed pipeline connecting pipe fitting and process.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a meta-nitrotrifluorotoluene synthetic sealed pipe connecting pipe fitting, comprising two pipes fixed to the lower end of a working platform, a step pipe is arranged between the opposite ends of the two pipes, one end of the step pipe is coaxially extended with a sealing cover, an adaptation pipe is coaxially slidably installed inside the sealing cover, a sealing member is arranged between the adaptation pipe and the sealing cover, one end of the adaptation pipe and the other end of the step pipe are coaxially inlaid with slot pipes, the opposite ends of the two pipes are respectively inserted into the interior of the two slot pipes, a No. 1 sealing ring is provided on the inner surface of the slot pipe, the No. 1 sealing ring is tightly pressed against the inner surface of the pipe, the No. 1 sealing ring is hollow, the interior of the No. 1 sealing ring is filled with gas, a boss ring is slidably installed inside the slot pipe, the boss ring is tightly pressed against the side of the No. 1 sealing ring, a reinforcement is provided at the upper end of the sealing cover, and the reinforcement is respectively connected to the working platform and the boss ring.

[0006] Preferably, the seal includes a sealing groove ring extending coaxially on the outer surface of the adaptation tube, the sealing groove ring is slidably installed inside the cover, and a No. 2 sealing ring is installed inside the sealing groove ring, and the No. 2 sealing ring is pressed against the inner side of the cover.

[0007] Preferably, a No. 3 sealing ring is provided on the side of the other end of the adaptation tube, and the No. 3 sealing ring is pressed tightly against the side of the cover, and the other end of the adaptation tube is slidably installed inside the step tube.

[0008] Preferably, the reinforcement includes a guide frame fixedly installed on the upper end of the cover, the end of the guide frame is inlaid with a hanger, the end of the hanger is provided with a slot, the slot is engaged with the lower part of the channel steel of the working platform, a threaded rod is rotatably installed through the middle part of the hanger, the outer surface of the threaded rod is screwed with a synchronous frame, one end of the synchronous frame is connected to a pressure plate, and the pressure plate is pressed against the inner lower end of the channel steel of the working platform.

[0009] Preferably, a vertical frame extends from the end of the pressure plate, the end of the vertical frame is fixed to the synchronization frame, the other end of the synchronization frame is fixedly installed with a synchronization frame, the synchronization frame is slidably installed on the outer surface of the guide frame, and main guide sleeves are slidably installed on both sides of the guide frame, and a jacking pipe rack is connected between the two main guide sleeves and the two sides of the synchronization frame.

[0010] Preferably, the outer sides of the adaptation tube and the step tube are coaxially provided with a top ring, the top ring is placed on the slot tube, and the side annular array of the top ring is penetrated and inlaid with multiple capping columns, the capping columns slide through the interior of the slot tube, the ends of the capping columns are fixed to the boss ring, the lower part of the guide frame is penetrated and inlaid with guide columns, the main sleeve is slidably installed on the outer surface of the guide column, a secondary guide sleeve is provided above the step tube, the secondary guide sleeve is slidably installed on the outer surface of the guide column, the lower end of the secondary guide sleeve and the lower end of the main sleeve above the adaptation tube are fixedly installed with a portal frame, both ends of the portal frame are extended with force components, the ends of the force components are fixed to the top ring, the lower end of the main sleeve above the step tube is extended with a push claw, and the push claw is pressed on the secondary guide sleeve.

[0011] Preferably, a No. 1 lug is extended from the upper end of the main guide sleeve, and the end of the No. 1 lug is rotatably connected to one end of the jacking pipe frame. A No. 2 lug is extended on both sides of the synchronization frame, and the end of the No. 2 lug is rotatably connected to the other end of the jacking pipe frame. A square rod is extended from the side of the guide frame near the bottom of the guide column, and the push claw is slidably mounted on the outer surface of the square rod.

[0012] A connection process for a m-nitrobenzotrifluoride synthetic sealed pipeline is also provided, comprising the following steps:

[0013] S1: Insert the slot pipe on the step pipe into one of the pipes. At this time, the slot on the hanger is engaged with the lower part of the channel steel of the working platform.

[0014] S2: Then the threaded rod is rotated to drive the pressing plate to move downward, and at the same time the adaptable tube in the cover is pushed out, so that the slot tube on the adaptable tube is inserted into another pipe;

[0015] S3: Then continue to rotate the threaded rod so that the No. 1 sealing ring is pressed against the pipe to seal between the slot pipe and the pipe. At this time, the downward pressure plate is just pressed against the inner lower end of the channel steel of the working platform, thereby connecting the two pipes and reinforcing the pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Insert the slot tube on the stepped tube into one of the pipes, then rotate the threaded rod to drive the synchronous frame on the synchronous frame to move downward, so that the pipe jacking frame can move, thereby driving the two main guide sleeves to move synchronously and oppositely to push out the adaptable tube in the cover, so that the slot tube on the adaptable tube gradually moves toward the other pipe and is inserted into the other pipe. After the insertion is completed, the sealing groove ring just slides against the inner wall of the cover to position the extended adaptable tube so that the adaptable tube will not continue to extend. At the same time, the push claw just contacts the auxiliary guide sleeve, and then continue Continue to rotate the threaded rod to allow the two main sleeves to continue to move in opposite directions to push the top rings on both sides respectively, so that the top rings can be pressed against the slot tube to avoid retraction. During this process, the boss ring will be driven by the top ring to slide in the slot tube, so as to use the boss ring to push the No. 1 sealing ring, so that the gas in the No. 1 sealing ring will generate reverse thrust under the extrusion, so that the No. 1 sealing ring can be in close contact with the inner wall of the pipe to seal the gap between the slot tube and the pipe, so that the pipes without connecting structure can be connected, which effectively meets the use requirements.

[0018] 2. When the threaded rod is rotating, the synchronous frame will also drive the pressure plate to move downward, so that the hanger can hold the lower part of the channel steel of the working platform to fix the cover, etc., so that after it is connected with the pipeline, it can play the function of reinforcing the pipeline, thereby further meeting the needs of use, and only by rotating the threaded rod, the pipeline connection and reinforcement operation can be completed. The process is simple and effectively facilitates use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a sealing pipe connecting fitting for m-nitrotrifluorotoluene synthesis according to the present invention;

[0020] Figure 2 This is a schematic diagram of the sealing portion of a connecting pipe fitting for a m-nitrotrifluorotoluene synthesis sealing pipeline according to the present invention;

[0021] Figure 3 This is a cross-sectional view of a m-nitrobenzotrifluoride synthesis sealing pipeline connecting pipe fitting of the present invention;

[0022] Figure 4 The invention provides a kind of m-nitrotrifluorotoluene synthetic sealing pipeline connecting pipe fitting Figure 3 A magnified view of middle A;

[0023] Figure 5 The invention provides a kind of m-nitrotrifluorotoluene synthetic sealing pipeline connecting pipe fitting Figure 3 Enlarged view of middle B;

[0024] Figure 6 This is a schematic diagram of a boss ring of a m-nitrotrifluorotoluene synthesis sealing pipe connecting pipe fitting of the present invention;

[0025] Figure 7 This is a view showing the use of a m-nitrotrifluorotoluene synthetic sealed pipe connecting pipe fitting according to the present invention;

[0026] Figure 8 This is a view showing the clamping of the channel steel and the hanger of the working platform of the m-nitrotrifluorotoluene synthetic sealing pipeline connecting pipe fitting of the present invention;

[0027] Figure 9 The invention provides a kind of m-nitrotrifluorotoluene synthetic sealing pipeline connecting pipe fitting Figure 7 Enlarged view of C in the middle.

[0028] In the figure: 1. Pipe; 2. Adaptive pipe; 3. Sealing cover; 4. Pipe jacking frame; 5. Guide frame; 6. Hanger; 7. Threaded rod; 8. Synchronous frame; 9. Press plate; 10. Step pipe; 11. No. 1 sealing ring; 12. Boss ring; 13. Working platform; 14. Capping column; 15. Top ring; 16. No. 2 sealing ring; 17. Sealing groove ring; 18. No. 3 sealing ring; 19. Force sharing frame; 20. Door frame; 21. Main guide sleeve; 22. Guide column; 23. Square rod; 24. Push claw; 25. Auxiliary guide sleeve; 26. Synchronous frame; 27. Slot pipe; 28. No. 1 ear; 29. ​​No. 2 ear; 30. Vertical frame; 31. Card slot. DETAILED DESCRIPTION

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0030] like Figures 1-9The shown meta-nitrotrifluorotoluene synthetic sealed pipe connecting pipe fitting comprises two pipes 1 fixed at the lower end of a working platform 13, a stepped pipe 10 is provided between the opposite ends of the two pipes 1, a sealing cover 3 is coaxially extended at one end of the stepped pipe 10, the stepped pipe 10 and the sealing cover 3 serve as a communication, an adaptation pipe 2 is coaxially slidably installed inside the sealing cover 3, which can ensure that the two slot pipes 27 are smoothly inserted into the two fixed pipes 1, a sealing member is provided between the adaptation pipe 2 and the sealing cover 3, one end of the adaptation pipe 2 and the other end of the stepped pipe 1 are coaxially inlaid with a slot pipe 27, the opposite ends of the two pipes 1 are respectively inserted into the inside of the two slot pipes 27, the slot pipe 27 serves to be inserted into the pipe 1 for communication, and the slot pipe 27 is A No. 1 sealing ring 11 is provided on the inner surface, and the No. 1 sealing ring 11 is pressed against the inner surface of the pipe 1. The No. 1 sealing ring 11 is hollow, and the interior of the No. 1 sealing ring 11 is filled with gas. A boss ring 12 is slidably installed inside the slot tube 27, and the boss ring 12 is pressed against the side of the No. 1 sealing ring 11. The boss ring 12 is driven by the top ring 15 to slide in the slot tube 27 and push the No. 1 sealing ring 11, so that the gas in the No. 1 sealing ring 11 generates a reverse thrust under the extrusion, so that the No. 1 sealing ring 11 can be in close contact with the inner wall of the pipe 1 to seal the gap between the slot tube 27 and the pipe 1 to prevent leakage. A reinforcement is provided at the upper end of the cover 3, and the reinforcement is connected to the working platform 13 and the boss ring 12 respectively.

[0031] The sealing member includes a sealing groove ring 17 coaxially extending on the outer surface of the adaptation tube 2. The sealing groove ring 17 is slidably installed inside the cover 3. When the adaptation tube 2 slides, the sealing groove ring 17 will slide synchronously in the cover 3. After the slot tube 27 is inserted, the sealing groove ring 17 just slides against the inner wall of the cover 3 to position the extended adaptation tube 2 so that the adaptation tube 2 will not continue to extend. A No. 2 sealing ring 16 is installed inside the sealing groove ring 17. The No. 2 sealing ring 16 is pressed against the inner side of the cover 3. The sealing groove ring 17 can press the No. 2 sealing ring 16 against the cover 3 to seal the adaptation tube 2 and the cover 3.

[0032] A No. 3 sealing ring 18 is provided on the side of the other end of the adaptation tube 2. The No. 3 sealing ring 18 is pressed against the side of the cover 3. The other end of the adaptation tube 2 can press the No. 3 sealing ring 18 against the cover 3 to perform secondary sealing on the adaptation tube 2 and the cover 3 to prevent leakage at the connection between the adaptation tube 2 and the cover 3. The other end of the adaptation tube 2 is slidably installed inside the step tube 10.

[0033] The reinforcement includes a guide frame 5 fixedly mounted on the upper end of the cover 3, and the end of the guide frame 5 is inlaid with a hanger 6, which plays a connecting role. A card slot 31 is opened at the end of the hanger 6, and the hanger 6 plays a role in fixing the cover 3, etc. The card slot 31 is engaged with the lower part of the channel steel of the working platform 13 to prevent displacement. A threaded rod 7 is rotatably installed through the middle part of the hanger 6, and a synchronous frame 8 is screwed on the outer surface of the threaded rod 7. One end of the synchronous frame 8 is connected to a pressure plate 9, which is pressed against the inner lower end of the channel steel of the working platform 13. Rotating the threaded rod 7 can drive the pressure plate 9 on the synchronous frame 8 to move downward so that it can be pressed against the inner lower end of the channel steel of the working platform 13, so that the hanger 6 can hug the lower part of the channel steel of the working platform 13 to fix the cover 3, etc., thereby reinforcing the pipeline 1.

[0034] A vertical frame 30 extends from the end of the pressure plate 9, and the end of the vertical frame 30 is fixed to the synchronous frame 8. The vertical frame 30 serves to fix the pressure plate 9 and the synchronous frame 8 together. The other end of the synchronous frame 8 is fixedly installed with a synchronization frame 26, and the synchronization frame 26 is slidably installed on the outer surface of the guide frame 5. Main guide sleeves 21 are slidably installed on both sides of the guide frame 5. The jacking frame 4 is connected between the two main guide sleeves 21 and the two sides of the synchronization frame 26. The synchronization frame 26 can be driven downward by the synchronization frame 8, so that the jacking frame 4 can move, so as to drive the two main guide sleeves 21 to move synchronously and oppositely, so as to eject the adapting tube 2 in the cover 3, so that the slot tube 27 on the adapting tube 2 gradually moves toward the pipe 1 and is inserted into the pipe 1.

[0035] The outer sides of the adaptation tube 2 and the outer sides of the step tube 10 are coaxially provided with a top ring 15. The top ring 15 is placed on the slot tube 27 to prevent the slot tube 27 from shrinking. The top ring 15 drives the boss ring 12 to push the No. 1 sealing ring 11. The side annular array of the top ring 15 is penetrated and inlaid with multiple capping columns 14. The capping columns 14 slide through the interior of the slot tube 27. The end of the capping column 14 is fixed to the boss ring 12. The capping column 14 plays the role of fixing the boss ring 12 and the top ring 15 together. The lower part of the guide frame 5 is penetrated and inlaid with a guide column 22. The main sleeve 21 is slidably installed on the outer surface of the guide column 22. The guide column 22 plays the role of guiding the main sleeve 21. A secondary guide sleeve 25 is provided above the step tube 10. The secondary guide sleeve 25 is slidably installed on the outer surface of the guide column 22. The secondary guide sleeve 25 drives the top ring 15 at the step tube 10 to move. The lower end of the auxiliary guide sleeve 25 and the lower end of the main guide sleeve 21 above the adapting tube 2 are fixedly installed with a gantry 20, and both ends of the gantry 20 are extended with a force component frame 19, and the end of the force component frame 19 is fixed to the top ring 15. The cooperation of the gantry 20 and the force component frame 19 can evenly apply the thrust to the top ring 15. The lower end of the main guide sleeve 21 above the stepped tube 10 is extended with a push claw 24, which is pressed against the auxiliary guide sleeve 25. The push claw 24 can push the auxiliary guide sleeve 25. When the two main guide sleeves 21 move synchronously and oppositely, one of the main guide sleeves 21 will push the adapting tube 2 in the cover 3 out, and the other main guide sleeve 21 drives the push claw 24 to move toward the auxiliary guide sleeve 25. After the slot tube 27 on the adapting tube 2 is inserted into the pipeline 1, the push claw 24 just contacts the auxiliary guide sleeve 25, and then the two main guide sleeves 21 continue to move synchronously and oppositely, and can push the top rings 15 on both sides.

[0036] A No. 1 lug 28 is extended from the upper end of the main guide sleeve 21, and the end of the No. 1 lug 28 is rotatably connected to one end of the jacking frame 4. A No. 2 lug 29 is extended on both sides of the synchronization frame 26, and the end of the No. 2 lug 29 is rotatably connected to the other end of the jacking frame 4. Both the No. 1 lug 28 and the No. 2 lug 29 serve to facilitate the connection of the jacking frame 4. A square rod 23 is extended from the side of the guide frame 5 near the bottom of the guide column 22, and the push claw 24 is slidably mounted on the outer surface of the square rod 23, and the square rod 23 serves to guide the push claw 24.

[0037] A connection process for a m-nitrobenzotrifluoride synthetic sealed pipeline is also provided, comprising the following steps:

[0038] S1: Insert the slot tube 27 on the step tube 10 into one of the pipes 1. At this time, the slot 31 on the hanger 6 is engaged with the lower part of the channel steel of the working platform 13.

[0039] S2: Then, the threaded rod 7 is rotated to drive the pressing plate 9 to move downward, and at the same time, the adaptable tube 2 in the cover 3 is pushed out, so that the slot tube 27 on the adaptable tube 2 is inserted into the other pipe 1;

[0040] S3: Then continue to rotate the threaded rod 7 so that the No. 1 sealing ring 11 is pressed against the pipe 1 to seal between the slot tube 27 and the pipe 1. At this time, the downward pressure plate 9 is just pressed against the inner lower end of the channel steel of the working platform 13, thereby connecting the two pipes 1 and reinforcing the pipe 1.

[0041] When connected, the slot tube 27 on the step tube 10 is inserted into one of the pipes 1. At this time, the slot 31 on the hanger 6 is engaged with the lower part of the channel steel of the working platform 13. Then the threaded rod 7 is rotated to drive the synchronization frame 26 and the pressure plate 9 on the synchronization frame 8 to move downward. At this time, the downward synchronization frame 26 allows the jacking frame 4 to move, so as to drive the two main guide sleeves 21 to move synchronously and oppositely to push out the adaptation tube 2 in the cover 3, so that the slot tube 27 on the adaptation tube 2 gradually moves toward the other pipe 1 and is inserted into the other pipe 1. After the insertion is completed, the sealing groove ring 17 just slides against the inner wall of the cover 3 to position the extended adaptation tube 2 so that the adaptation tube 2 will not continue to extend. At the same time, the push claw 24 just contacts the auxiliary guide sleeve 25, and then the threaded rod 7 continues to be rotated. , let the two main guide sleeves 21 continue to move in opposite directions to push the top rings 15 on both sides respectively, so that the top ring 15 can be pressed against the slot tube 27 to avoid retraction. In this process, the boss ring 12 is driven by the top ring 15 to slide in the slot tube 27, so as to use the boss ring 12 to push the No. 1 sealing ring 11, so that the gas in the No. 1 sealing ring 11 generates a reverse thrust under the extrusion, so that the No. 1 sealing ring 11 can be in close contact with the inner wall of the pipeline 1 to seal the gap between the slot tube 27 and the pipeline 1. At this time, the downward pressure plate 9 is just pressed against the inner lower end of the channel steel of the working platform 13, so that the hanger 6 can hug the lower part of the channel steel of the working platform 13 to fix the cover 3, etc., so that the two pipelines 1 can be connected and the reinforcement operation of the pipeline 1 can be completed simultaneously.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A m-nitrobenzotrifluoride synthetic sealed pipe connecting pipe fitting, comprising two pipes (1) fixed to the lower end of a working platform (13), characterized in that: A stepped tube (10) is provided between the opposite ends of the two pipes (1), a cover (3) is coaxially extended at one end of the stepped tube (10), an adaptable tube (2) is coaxially slidably installed inside the cover (3), a sealing member is provided between the adaptable tube (2) and the cover (3), one end of the adaptable tube (2) and the other end of the stepped tube (10) are coaxially inlaid with a slot tube (27), the opposite ends of the two pipes (1) are respectively inserted into the inside of the two slot tubes (27), and the slot tubes (27) are provided in a manner that the adaptable tube (2) and the cover (3) are coaxially inlaid with each other. The inner surface of the slot tube (27) is provided with a No. 1 sealing ring (11), the No. 1 sealing ring (11) is pressed against the inner surface of the pipe (1), the No. 1 sealing ring (11) is hollow, the interior of the No. 1 sealing ring (11) is filled with gas, a boss ring (12) is slidably installed inside the slot tube (27), the boss ring (12) is pressed against the side of the No. 1 sealing ring (11), and a reinforcement is provided at the upper end of the cover (3), and the reinforcement is respectively connected to the working platform (13) and the boss ring (12); The reinforcing member includes a guide frame (5) fixedly mounted on the upper end of the cover (3), an end of the guide frame (5) is inlaid with a hanger (6), an end of the hanger (6) is provided with a slot (31), the slot (31) is engaged with the lower part of the channel steel of the working platform (13), a threaded rod (7) is rotatably mounted through the middle of the hanger (6), a synchronous frame (8) is screwed onto the outer surface of the threaded rod (7), one end of the synchronous frame (8) is connected to a pressure plate (9), and the pressure plate (9) is pressed against the inner lower end of the channel steel of the working platform (13); A vertical frame (30) extends from the end of the pressure plate (9), and the end of the vertical frame (30) is fixed to the synchronous frame (8). A synchronous frame (26) is fixedly installed on the other end of the synchronous frame (8). The synchronous frame (26) is slidably mounted on the outer surface of the guide frame (5). Main guide sleeves (21) are slidably mounted on both sides of the guide frame (5). A jacking frame (4) is connected between the two main guide sleeves (21) and the two sides of the synchronous frame (26). The outer sides of the adaptable tube (2) and the stepped tube (10) are coaxially provided with a top ring (15), the top ring (15) is placed on the slot tube (27), and a plurality of capping columns (14) are embedded in the side annular array of the top ring (15), the capping columns (14) are slidably inserted into the interior of the slot tube (27), the ends of the capping columns (14) are fixed to the boss ring (12), the lower part of the guide frame (5) is penetrated and embedded with a guide column (22), the main guide sleeve (21) is slidably mounted on the outer surface of the guide column (22), and the stepped tube A secondary guide sleeve (25) is provided above the step tube (10), and the secondary guide sleeve (25) is slidably mounted on the outer surface of the guide column (22). The lower end of the secondary guide sleeve (25) and the lower end of the main guide sleeve (21) above the adaptation tube (2) are fixedly mounted with a gantry (20), and both ends of the gantry (20) are extended with a force component frame (19), and the end of the force component frame (19) is fixed to the top ring (15). The lower end of the main guide sleeve (21) above the step tube (10) is extended with a push claw (24), and the push claw (24) is pressed on the secondary guide sleeve (25).

2. The m-nitrobenzotrifluoride synthetic sealed pipe connecting fitting according to claim 1, characterized in that: The sealing member comprises a sealing groove ring (17) coaxially extending on the outer surface of the adapting tube (2), the sealing groove ring (17) being slidably mounted inside the sealing cover (3), a second sealing ring (16) being mounted inside the sealing groove ring (17), and the second sealing ring (16) being pressed tightly against the inner side surface of the sealing cover (3).

3. The m-nitrobenzotrifluoride synthetic sealed pipe connecting fitting according to claim 2, characterized in that: A No. 3 sealing ring (18) is provided on the side surface of the other end of the adaptation tube (2), and the No. 3 sealing ring (18) is pressed tightly against the side surface of the cover (3). The other end of the adaptation tube (2) is slidably installed inside the step tube (10).

4. The m-nitrobenzotrifluoride synthetic sealed pipe connecting fitting according to claim 3, characterized in that: A No. 1 connecting ear (28) extends from the upper end of the main guide sleeve (21), and the end of the No. 1 connecting ear (28) is rotatably connected to one end of the jacking frame (4). A No. 2 connecting ear (29) extends from both sides of the synchronization frame (26), and the end of the No. 2 connecting ear (29) is rotatably connected to the other end of the jacking frame (4). A square rod (23) extends from the side of the guide frame (5) near the bottom of the guide column (22), and the push claw (24) is slidably mounted on the outer surface of the square rod (23).

5. A connection process for a m-nitrobenzotrifluoride synthetic sealed pipeline, applied to a m-nitrobenzotrifluoride synthetic sealed pipeline connection pipe fitting according to claim 4, characterized in that: The following steps are involved: S1: Insert the slot tube (27) on the step tube (10) into one of the pipes (1), and then the slot (31) on the hanger (6) is engaged with the lower part of the channel steel of the working platform (13); S2: The threaded rod (7) is then rotated to drive the pressing plate (9) to move downward, and at the same time, the adapting tube (2) in the cover (3) is pushed out, so that the slot tube (27) on the adapting tube (2) is inserted into the other pipe (1); S3: Then continue to rotate the threaded rod (7) so that the No. 1 sealing ring (11) is pressed against the pipe (1) to seal between the slot pipe (27) and the pipe (1). At this time, the downward pressure plate (9) is just pressed against the inner lower end of the channel steel of the working platform (13), thereby connecting the two pipes (1) and reinforcing the pipe (1).

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