Panel type spiral cover integrated furnace tube
Technical Field
The invention relates to the field of high-temperature conversion furnaces, in particular to a panel type spiral cover integrated furnace tube.
Background
In VOCs monitoring systems and various gas purification devices, a high temperature shift furnace is required to catalyze the gas at high temperature to provide the required gas for subsequent steps. Most of the high-temperature conversion furnaces carried by the instruments in the market are built-in. The customer needs to open the cover and pull out the connecting pipe, the lemon elastic fixing piece and the like to replace the furnace tube or the catalyst in the furnace, a series of actions which need a certain technical level and training are easy to occur errors, and the loss is caused to the customer.
Disclosure of Invention
In order to overcome the existing defects, the invention provides a panel type spiral cover integrated furnace tube.
A panel type cap screwing integrated furnace tube comprises a cap screwing assembly, a mounting seat, a connecting block, a core body, a sleeve, a T-shaped insertion tube, a bearing screw and a sealing screw.
The spiral cover assembly comprises a spiral cover, a bearing and a compression ring, wherein the bearing is arranged in a bearing hole on the axis of the spiral cover and is compressed and fixed by the compression ring;
The side surface of the connecting block is in a step shape, a sealing ring groove is arranged close to the step-shaped side, and a first sealing ring is arranged; one end of the connecting block is inserted into the bearing inner ring in the spiral cover and is pressed on the bearing from the other side by a bearing screw, and the connecting block can freely rotate around the axis of the spiral cover;
the core body and the connecting block are fixed through sealing screws, the core body can rotate along with the connecting block, two stepped shapes are arranged at two ends of the outer side of the core body, sealing ring grooves are respectively arranged close to the stepped shapes, and a second sealing ring and a third sealing ring are respectively arranged;
The mounting seat is provided with an air inlet and an air outlet.
The installation seat is internally provided with three step-shaped inclined planes, the positions of the three step-shaped inclined planes correspond to the second sealing ring, the third sealing ring and the first sealing ring on the connecting block on the core body respectively, two inclined plane middle sections of the installation seat, corresponding to the first sealing ring and the second sealing ring, are provided with an annular groove communicated with the air inlet, and two inclined plane middle sections, corresponding to the second sealing ring and the third sealing ring, are provided with another annular groove communicated with the air outlet.
The two ends of the mounting seat are opened, and one end is provided with threads and can be screwed into the screw cap.
When the spiral cover is screwed into the mounting seat and locked, the spiral cover pushes the connecting block and the core body to slide towards the mounting seat and compress the first sealing ring, the second sealing ring and the third sealing ring, so that three inclined planes compressed by the sealing rings respectively form sealing.
When the screw cap is screwed into the mounting seat and locked, the connecting block and the core body can freely rotate around the screw cap, and the connecting block and the core body can not rotate along with the screw cap due to the fact that the connecting block and the core body slide along the axis of the mounting seat under the friction force of the first sealing ring, the second sealing ring, the third sealing ring and the mounting seat.
The core axis is provided with a large hole for installing the sleeve, one side of the large hole is provided with a small hole for installing the T-shaped insertion pipe, and the joint of the small hole and the T-shaped insertion pipe is provided with a sealing ring groove and a fourth sealing ring.
The middle section of the big hole is provided with a vent hole, the upper part of the vent hole is provided with an air hole, the vent hole is communicated with the air hole, the air hole is communicated with the air outlet of the mounting seat, and the two ends of the vent hole are respectively provided with a sealing ring groove and are respectively provided with a fifth sealing ring and a sixth sealing ring.
The T-shaped cannula is in a T shape, one end of the T-shaped cannula is in a flange shape, the other end of the T-shaped cannula is in an elongated tubular shape, and two sides of the T-shaped cannula are open.
The thin end of the T-shaped cannula passes through a smaller hole on the axis of the core body, the flange end of the T-shaped cannula is positioned between the core body and the connecting block, and when the core body is fastened on the connecting block, the connecting block simultaneously compresses the flange end of the T-shaped cannula on the core body.
Optionally, an external thread is provided on the body at one end of the sleeve opening, and the core can be screwed in and sealed by pressing a fourth sealing ring on the top of the sleeve opening.
Optionally, the screw cap of the screw cap assembly is hard-connected with the connecting block and the core body, and each part can not rotate independently.
Alternatively, the sleeve is a high temperature resistant tube which is open at one side and closed at the other side, and can be made of quartz, ceramic or heat resistant metal.
Optionally, the sleeve is filled with a catalyst, which can be conveniently pulled out of the core for replacement when in subsequent use.
Optionally, no step is arranged in the mounting seat, a large cone is directly arranged, the shapes of the core body and the connecting block are also matched with the large cone, and the sealing ring is distributed on the cone.
Alternatively, the T-shaped cannula may be integral with the core and the connection block under certain conditions (e.g., metallic materials).
The panel type spiral cover integrated furnace tube disclosed by the invention has the advantages that the spiral cover and the furnace tube are integrated, and the spiral cover and the furnace tube can be arranged on a panel, so that the furnace tube is convenient to take out; special gas path and sealing measures make it unnecessary to remove any pipeline for taking out furnace tube; the furnace tube will not rotate when the screw cap rotates. The furnace tube or the catalyst in the furnace is replaced without a series of actions requiring a certain technical level and training, such as uncovering, connecting pipe pulling-out, lemon tightening and fixing piece, and the like, so that the furnace tube or the catalyst is safe and convenient.
Drawings
FIG. 1 is a schematic diagram of the structure and gas path of a panel-type screw cap integrated furnace tube.
FIG. 2 is a schematic view of a screw cap integrated furnace tube.
FIG. 3 is a schematic diagram of an alternative structure of a panel-type screw cap integrated furnace tube.
Detailed Description
The following describes a panel-type cap-screwing integrated furnace tube in detail by referring to the drawings and specific embodiments.
Fig. 1 and 2 show a panel-type cap screwing integrated furnace tube, which comprises a cap screwing assembly, a mounting seat 4, a connecting block 5, a core 7, a sleeve 12, a T-shaped insertion tube 13, a bearing screw and a sealing screw.
The spiral cover assembly comprises a spiral cover 1, a bearing 2 and a compression ring 3, wherein the bearing 2 is arranged in a bearing hole on the axis of the spiral cover 1 and is pressed and fixed by the compression ring 3;
The side surface of the connecting block 5 is in a step shape, a sealing ring groove is arranged close to the step-shaped side, and a first sealing ring 6 is arranged; one end of the connecting block 5 is inserted into the inner ring of the bearing 2 in the spiral cover 1, and is pressed on the bearing 2 from the other side by a bearing screw 19, and the connecting block 5 can freely rotate around the axis of the spiral cover 1;
The core body 7 and the connecting block 5 are fixed through a sealing screw 18, the core body 7 can rotate along with the connecting block 5, two stepped shapes are arranged at two ends of the outer side of the core body, sealing ring grooves are respectively arranged close to the stepped shapes, and a second sealing ring 8 and a third sealing ring 11 are respectively arranged;
the mounting seat 4 is provided with an air inlet A and an air outlet B.
The installation seat 4 is internally provided with three step-shaped inclined planes, the positions of the three step-shaped inclined planes correspond to the second sealing ring 8 and the third sealing ring 11 on the core body 7 and the first sealing ring 6 on the connecting block 5 respectively, two inclined plane middle sections of the installation seat 4, which correspond to the first sealing ring 6 and the second sealing ring 8, are provided with an annular groove which is communicated with the air inlet A, and two inclined plane middle sections, which correspond to the second sealing ring 8 and the third sealing ring 11, are provided with another annular groove which is communicated with the air outlet B.
The two ends of the mounting seat 4 are opened, one end is provided with threads, and the mounting seat can be screwed into the screw cap 1.
When the screw cap 1 is screwed into the mounting seat 4 and locked, the screw cap 1 pushes the connecting block 5 and the core 7 to slide towards the mounting seat 4 and compress the first sealing ring 6, the second sealing ring 8 and the third sealing ring 11, so that the three compressed inclined surfaces of each sealing ring form sealing respectively.
When the screw cap 1 is screwed into the mounting seat 4 and locked, the connecting block 5 and the core 7 can freely rotate around the screw cap, and the connecting block 5 and the core 7 slide along the axis of the mounting seat 4 without rotating along with the screw cap 1 under the friction force of the first sealing ring 6, the second sealing ring 8, the third sealing ring 11 and the mounting seat 4.
The axis of the core body 7 is provided with a large hole for installing the sleeve 12, one side of the large hole is provided with a small hole for installing the T-shaped insertion pipe 13, and the joint of the small hole and the T-shaped insertion pipe 13 is provided with a sealing ring groove and a fourth sealing ring 16.
The middle section of the big hole is provided with a vent hole D, the upper part of the vent hole D is provided with a vent hole E, the vent hole D is communicated with the vent hole E, the vent hole E is communicated with a vent hole B of the mounting seat 4, and two ends of the vent hole D are respectively provided with a sealing ring groove and are respectively provided with a fifth sealing ring 9 and a sixth sealing ring 10.
T-shaped cannula 13 is T-shaped, one end of the T-shaped cannula is flange-shaped, the other end of the T-shaped cannula is slender tubular, and two sides of the T-shaped cannula are open.
The thin end of the T-shaped insertion tube 13 passes through a smaller hole on the axis of the core 7, the flange end of the T-shaped insertion tube 13 is positioned between the core 7 and the connecting block 5, and when the core 7 is fastened on the connecting block, the connecting block 5 simultaneously compresses the flange end of the T-shaped insertion tube 13 on the core.
The open end of the sleeve 12 is provided with external threads on the pipe body, which can be screwed into the core 7 and sealed by pressing the fourth sealing ring 16 on the top of the sleeve opening.
After the gas 15 to be measured enters from the gas inlet A, the gas can only reach the end part of the T-shaped insertion pipe from the gas inlet C on the core body due to the sealing of the sealing ring 6 and the sealing ring 8. And the T-shaped cannula is pressed against the core by the connection block and sealed with the sealing ring 16. The gas to be measured can only flow along the bore of the tee into the space between the sleeve 12 and the tee. The gaps may be filled with a catalyst or left empty as needed. At this time, if the furnace tube is inserted into the heating furnace 14, the gas to be measured is heated and is drawn out along the vent hole D on the sleeve. At this time, the two sides of the vent hole D are sealed by the sealing ring 9 and the sealing ring 10, and the gas to be tested can only enter the annular groove below the gas outlet B of the mounting seat, and the two sides of the annular groove are sealed by the sealing ring 8 and the sealing ring 11. The gas to be measured can only flow out from the gas outlet B, and the subsequent working flow is continued.
Fig. 3 shows another form of the invention in which the sleeve is replaced by a threaded sleeve 22, the open section of tubular body being made externally threaded and being threaded into a core 21 and sealed by a sealing ring' 20 which compresses the open top of the sleeve.
In another form of the invention, under the condition that the inside of the mounting seat is smooth enough and the strength of the sealing ring is enough, the screw cap '24, the connecting block' 25 and the core body '21 are reliably and long sealed nail' 23 to carry out hard connection and sealing, and all parts can not rotate independently.
Finally, it should be noted that the above embodiments are only intended to describe the technical solution of the present invention and not to limit the technical method, the present invention extends to other modifications, variations, applications and embodiments in application, and therefore all such modifications, variations, applications, embodiments are considered to be within the spirit and scope of the teachings of the present invention.