Heating furnace tube structure capable of delaying coking of furnace tube

Abstract

The utility model discloses a heating furnace tube structure capable of delaying coking of a furnace tube. The heating furnace tube structure comprises a main furnace tube body, the rear end of the main furnace tube body is connected and communicated with the auxiliary furnace tube bodies at equal intervals and located on the extension line of the auxiliary furnace tube bodies, and the rear ends of the auxiliary furnace tube bodies are embedded in the heat insulation plate. The whole main furnace tube body is of a stepped structure with a thin front part and a wide rear part; a temperature measuring structure is arranged on the outer side of the front end of the main furnace tube body and comprises a temperature thermocouple, and the temperature thermocouple is arranged outside a thin tube body at the front end of the main furnace tube body in an attached mode. The auxiliary furnace tube body is of a funnel-shaped structure with a thin front end and a thick rear end; limiting fixing structures are arranged on the outer sides of the front ends of the auxiliary furnace tube bodies at the two ends. According to the heating furnace tube structure capable of delaying coking of the furnace tube, the heating furnace tube structure can be assembled and installed conveniently, sealing is guaranteed, coking of the heating furnace tube is delayed, temperature measurement and temperature control are facilitated, large temperature difference is avoided, and the effect of delaying coking of the furnace tube is good.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnace tubes, in particular to a heating furnace tube structure capable of delaying coking of the furnace tubes. Background Art

[0002] Heating furnace tubes are the main heating equipment for transporting raw materials in long-distance pipelines. They are widely used in industries such as petroleum refining, petrochemicals, coal chemical industry, tar processing, and crude oil transportation. Furnace tubes are the core components of heating furnaces and are related to the safety and normal operation of heating furnaces.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN218969159U discloses a device for delaying the coking of delayed coking heating furnace tubes, including a shell, two mounting plates are symmetrically fixedly connected on both sides of the shell, four entry slots are evenly arranged on the other side of the shell, one end of the entry slot is respectively provided with an air inlet pipe and a water inlet pipe, and one end of the air inlet pipe and the water inlet pipe is provided with a fixing plate, and four fixing parts of different sizes are evenly arranged inside the shell, and the four fixing parts are respectively provided with a first air inlet slot, a second air inlet slot, a first water inlet slot, and a second water inlet slot. Through the above structure, the speed of entering the furnace tube changes by changing the size of the air and water inlet, thereby delaying the coking rate in the heating furnace tube, protecting the heating furnace tube, and extending the production cycle, and the inner walls of the first air inlet slot and the second air inlet slot, the first water inlet slot and the second water inlet slot are symmetrically fixed with two delay inclined plates and anti-coking blocks, so that coking is not easy to occur inside.

[0004] However, due to the existing heating furnace tube structure, it is generally not convenient to assemble and install the heating furnace tube structure during use, it is difficult to ensure sealing, and the heating furnace tube structure is easily coked due to use and has a limited service life. Therefore, the inventors propose a heating furnace tube structure that can delay the coking of the furnace tube in order to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heating furnace tube structure that can delay the coking of the furnace tube, so as to solve the technical problems that the existing heating furnace tube structure proposed in the above background technology is generally not convenient to assemble and install the heating furnace tube structure during use, it is difficult to ensure sealing, and the heating furnace tube structure is easy to coke due to use and has a limited service life.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A heating furnace tube structure capable of delaying the coking of furnace tubes, comprising: a main furnace tube body 1; characterized in that the rear end of the main furnace tube body 1 is welded and connected with a plurality of auxiliary furnace tube bodies 2 at equal intervals and is located on the extension line of the main furnace tube body, and the rear ends of the auxiliary furnace tube bodies 2 are all nested in the heat insulation board 3;

[0008] The main furnace tube body 1 is in a stepped structure with a narrow front and a wide rear. A temperature measuring structure is arranged outside the front end of the main furnace tube body 1, which includes a temperature measuring thermocouple 16 attached to the thin tube body at the front end of the main furnace tube body 1.

[0009] The auxiliary furnace tube body 2 is a funnel-shaped structure with a thick rear end and a gradually thin front end; a limited position fixing structure is arranged on the outer side of the front end of the auxiliary furnace tube body 2 at both ends, and the limited position fixing structure includes a fixed plate 5 and a clamp-shaped movable plate 6, the fixed plate 5 is a T-shaped plate, the head of which is an arc-shaped plate that fits and hugs the outer wall of the thin end of the auxiliary furnace tube body 2, and the tail of which fits and is fixed on the back of the main furnace tube body 1, the movable plate 6 is two arc-shaped clamp plates, which are nested on the outer side of the auxiliary furnace tube body 2, and the inner ends of the two movable plates 6 are rotatably connected to the two ends of the arc-shaped plates, and the outer ends are provided with docking ear plates, which are fixedly clamped to the thin end of the auxiliary furnace tube body 2 by bolts after docking;

[0010] The heat insulation board 3 is provided with an annular nesting groove 31 corresponding to the rear end of the auxiliary furnace tube body, and the rear end thick end of the auxiliary furnace tube body 2 is inserted into the nesting groove for positioning, and a through hole is provided on the heat insulation board 3 corresponding to the center of the nesting groove to communicate with the auxiliary furnace tube body 2, and a communication control structure is installed inside the through hole, which includes a solenoid valve 8 and a connecting sleeve 9, and the connecting sleeve 9 is an annular sleeve with an interface at the rear end, and the connecting sleeve 9 is embedded in the through hole; the solenoid valve 8 control switch is installed in the connecting sleeve 9;

[0011] A plurality of arc-shaped delay plates 11 are fixedly connected to the rear side wall of the auxiliary furnace tube body 2 at equal intervals and symmetrically along the front-to-back direction, and the delay plates 11 are tilted and suspended toward the thin end of the auxiliary furnace tube body 2 .

[0012] The heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: the four corners of the heat insulation board 3 are provided with mounting holes 4.

[0013] The heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: a sealing gasket 7 is arranged in the nesting groove of the insulation board 3 along the outer circle of the auxiliary furnace tube body 2, and is tightly connected and sealed with the outer wall of the auxiliary furnace tube body and the side wall of the nesting groove.

[0014] The heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: the main furnace tube body 1 and the auxiliary furnace tube body 2 are both composed of a heating tube 12 and a coating 13 sprayed inside the heating tube 12, and the coating 13 is RLHY-201 high-temperature heat-conductive, wear-resistant, anti-corrosive, anti-coking and energy-saving coating.

[0015] The heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: the temperature measuring thermocouple 16 is fixed by a clamping device, and the clamping device comprises: a semi-annular receiving plate 14 which is fixed to the outside of the capillary body, and a pair of arc clamps 15 which are rotatably connected to the two ends of the receiving plate 14, the outer end of the arc clamp 15 is provided with a docking ear plate which is connected by bolts after docking, and the temperature measuring thermocouple 16 is clamped by the arc clamp 15 on the outer wall of the capillary body.

[0016] The heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: a control and display panel 10 is installed on the heat insulation board 3.

[0017] Compared with the prior art: the utility model has the following improvements:

[0018] 1. A main furnace tube body, an auxiliary furnace tube body, a heat insulation board and a mounting hole are provided. Since the auxiliary furnace tube body is fixedly connected to the rear of the main furnace tube body and nested with the heat insulation board, the outer end of the heat insulation board is symmetrically provided with mounting holes, and a fixing plate fixed to the main furnace tube body is provided on the lower front end of the auxiliary furnace tube body, and a movable plate fixed with bolts is rotatably connected on the fixing plate, and a sealing gasket fixed with the heat insulation board is closely provided on the outer side of the rear end of the auxiliary furnace tube body, and a solenoid valve fixed with the heat insulation board is provided on the inner rear side of the auxiliary furnace tube body, so that it is convenient to combine and install the heating furnace tube structure and ensure sealing;

[0019] 2. A main furnace tube body, an auxiliary furnace tube body, a delay plate and a coating are provided. Since the main furnace tube body and the auxiliary furnace tube body are respectively in a stepped structure and a funnel-shaped structure, the inner side of the rear end of the auxiliary furnace tube body is fixedly connected with symmetrically arranged delay plates at equal intervals, and the main furnace tube body and the auxiliary furnace tube body are both composed of a heating tube and a coating sprayed inside the heating tube. The coating is RLHY-201 high-temperature heat-conductive, wear-resistant, anti-corrosive, anti-coking and energy-saving coating, so it is convenient to delay the coking of the heating furnace tube structure;

[0020] 3. A heat insulation board, a control and display panel, a receiving plate and an arc-shaped clamp are provided. Since the control and display panel is inlaid on the inner side of the right rear end of the heat insulation board, a receiving plate is nested and fitted on the lower side of the front end of the main furnace tube body, and an arc-shaped clamp fixed with bolts is rotatably connected on the receiving plate. A temperature measuring thermocouple fitted with the main furnace tube body is installed on the inner side of the arc-shaped clamp. Therefore, it is convenient to measure and control temperature, avoid large temperature difference, and have a good effect of delaying coking of the furnace tube.

[0021] The beneficial effects of the utility model are:

[0022] The heating furnace tube structure capable of delaying the coking of the furnace tube is convenient for assembly and installation, ensures sealing, prolongs the decoking time of the heating furnace tube, facilitates temperature measurement and temperature control, avoids large temperature difference, and has a good effect of delaying the coking of the furnace tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a top view of the overall structure of the utility model;

[0024] Figure 2 It is a top view schematic diagram of the structure of the utility model;

[0025] Figure 3 This is a rear view schematic diagram of the auxiliary furnace tube body and the heat insulation board of the utility model;

[0026] Figure 4 This is a schematic diagram of the internal wall structure of the main furnace tube body of the utility model;

[0027] Figure 5 This is a schematic diagram of the connection between the delay plate and the auxiliary furnace tube body of the utility model;

[0028] Figure 6 This is a schematic diagram of the connection between the receiving plate and the main furnace pipe body of the utility model.

[0029] In the figure: 1. Main furnace tube body; 2. Auxiliary furnace tube body; 3. Heat insulation board; 4. Mounting hole; 5. Fixed plate; 6. Movable plate; 7. Sealing gasket; 8. Solenoid valve; 9. Connecting sleeve; 10. Control and display panel; 11. Delay plate; 12. Heating tube; 13. Coating; 14. Adapter plate; 15. Arc clamp; 16. Temperature measuring thermocouple. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1 , 2 As shown, a heating furnace tube structure capable of delaying the coking of furnace tubes of the utility model comprises: a main furnace tube body 1; the rear end of the main furnace tube body 1 is welded and connected with a plurality of auxiliary furnace tube bodies 2 at equal intervals and is located on the extension line of the main furnace tube body, and the rear ends of the auxiliary furnace tube bodies 2 are all nested in the heat insulation board 3;

[0032] The main furnace tube body 1 is in a stepped structure with a narrow front and a wide rear. A temperature measuring structure is arranged outside the front end of the main furnace tube body 1, which includes a temperature measuring thermocouple 16 attached to the thin tube body at the front end of the main furnace tube body 1.

[0033] The auxiliary furnace tube body 2 is a funnel-shaped structure with a thick rear end and a gradually thin front end; a limited position fixing structure is arranged on the outer side of the front end of the auxiliary furnace tube body 2 at both ends, see Figure 3As shown, the position-limiting fixing structure includes a fixed plate 5 and a clamp-shaped movable plate 6, the fixed plate 5 is a T-shaped plate, the head of which is an arc-shaped plate that fits and hugs the outer wall of the thin end of the auxiliary furnace tube body 2, and the tail of which fits and is fixed on the back of the main furnace tube body 1, the movable plates 6 are two arc-shaped clamp plates, which are nested on the outside of the auxiliary furnace tube body 2, and the inner ends of the two movable plates 6 are rotatably connected to the two ends of the arc-shaped plates, and the outer ends are provided with butt-jointed ear plates, which are fixedly clamped to the thin end of the auxiliary furnace tube body 2 by bolts after butt-jointing;

[0034] See also Figure 3 As shown, the heat insulation board 3 is provided with an annular nesting groove 31 corresponding to the rear end of the auxiliary furnace tube body, the rear end thick end of the auxiliary furnace tube body 2 is inserted into the nesting groove for positioning, and a through hole is provided on the heat insulation board 3 corresponding to the center of the nesting groove to communicate with the auxiliary furnace tube body 2. Figure 1 , and a communication control structure is installed inside the through hole, which includes a solenoid valve 8 and a connecting sleeve 9, wherein the connecting sleeve 9 is an annular sleeve with an interface at the rear end, and the connecting sleeve 9 is embedded in the through hole; the solenoid valve 8 control switch is installed in the connecting sleeve 9;

[0035] See also Figure 1 As shown, a plurality of arc-shaped delay plates 11 are fixedly connected to the rear side wall of the auxiliary furnace tube body 2 at equal intervals and symmetrically along the front-to-back direction, and the delay plates 11 are tilted and suspended toward the thin end of the auxiliary furnace tube body 2.

[0036] See also Figure 3 As shown, the heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: the four corners of the heat insulation board 3 are provided with mounting holes 4.

[0037] See also Figure 1 , 3 As shown, a heating furnace tube structure capable of delaying coking of the furnace tube is provided, wherein: a sealing gasket 7 is arranged in the nesting groove of the heat insulation plate 3 along the outer circle of the auxiliary furnace tube body 2, and is tightly fitted and connected with the outer wall of the auxiliary furnace tube body and the side wall of the nesting groove for sealing.

[0038] See also Figure 4 As shown, a heating furnace tube structure capable of delaying coking of furnace tubes is described, wherein: the main furnace tube body 1 and the auxiliary furnace tube body 2 are both composed of a heating tube 12 and a coating 13 sprayed inside the heating tube 12, and the coating 13 is RLHY-201 high-temperature heat-conductive, wear-resistant, anti-corrosive, anti-coking and energy-saving coating.

[0039] See also Figure 6As shown, a heating furnace tube structure capable of delaying coking of furnace tubes, wherein: the temperature measuring thermocouple 16 is fixed by a clamping device, and the clamping device comprises: a semi-annular receiving plate 14 which is embraced and fixed outside the capillary body, and a pair of arc clamps 15 which are rotatably connected to both ends of the receiving plate 14, the outer end of the arc clamp 15 is provided with a docking ear plate which is connected by bolts after docking, and the temperature measuring thermocouple 16 is clamped by the arc clamp 15 on the outer wall of the capillary body.

[0040] The heating furnace tube structure capable of delaying the coking of the furnace tube, wherein: a control and display panel 10 is installed on the heat insulation board 3.

[0041] The technical solution of the utility model is further explained below:

[0042] The utility model provides a heating furnace tube structure capable of delaying furnace tube coking, comprising a main furnace tube body 1, an auxiliary furnace tube body 2, a heat insulation board 3, a mounting hole 4, a fixing board 5, a movable board 6, a sealing pad 7, a solenoid valve 8, a connecting sleeve 9, a control and display panel 10, a delay board 11, a heating tube 12, a coating 13, a receiving board 14, an arc clamp 15 and a temperature measuring thermocouple 16. When the heating furnace tube structure capable of delaying furnace tube coking is used, Figure 1 , Figure 2 , Figure 3 and Figure 6 First, the auxiliary furnace tube body 2 fixedly connected to the rear of the main furnace tube body 1 can be nested and arranged on the inner side of the heat insulation board 3, so that the front end of the auxiliary furnace tube body 2 is attached to the fixed plates 5 fixedly connected to the left and right ends of the main furnace tube body, and the rear end of the auxiliary furnace tube body 2 is tightly attached to the sealing gasket 7 pasted and fixed in the heat insulation board 3. Then, the movable plate 6 connected to the outside of the fixed plate 5 can be rotated so that the movable plate 6 is wrapped around the outer side of the front upper end of the auxiliary furnace tube body 2, and then the movable plate 6 can be fixedly connected by bolts, so as to achieve the purpose of installing and fixing the auxiliary furnace tube body 2 and the main furnace tube body. Then, the receiving plate 14 can be nested and attached to the lower side of the front end of the main furnace tube body 1, and the temperature measuring thermocouple 16 can be attached to the upper surface of the main furnace tube body 1. Then, the arc clamp 15 symmetrically connected to the outside of the receiving plate 14 can be rotated so that the arc clamp 15 fits on the temperature measuring thermocouple 16, and then the arc clamp 15 can be fixedly connected by bolts to achieve the purpose of installing and fixing the temperature measuring thermocouple 16. Finally, the screws can be installed through the installation holes 4 symmetrically opened inside the outer end of the heat insulation board 3, and the heat insulation board 3 is installed on the furnace body to be used (omitted in the figure), so as to complete the combined installation of the heating furnace tube structure, and facilitate the sealing performance of the sealing gasket 7 that is tightly connected to the outside of the auxiliary furnace tube body 2, and the electromagnetic valve 8 fixedly connected to the heat insulation board 3 is set at the rear of the auxiliary furnace tube body 2, so as to facilitate the sealing of the heating furnace tube structure.

[0043] like Figure 1 , Figure 4 and Figure 5 During the use of the heating furnace tube structure, the circulation pipeline can be first threadedly connected to the connecting sleeve 9 fixedly connected behind the heat insulation board 3, and then the control and display panel 10 embedded and installed on the inner side of the right rear end of the heat insulation board 3 can be used to control the operation of the solenoid valve 8 to control the circulation between the circulation pipe and the heating furnace tube structure, thereby facilitating the heating operation. During the heating operation, the main furnace tube body 1 and the auxiliary furnace tube body 2 are respectively in a stepped structure and a funnel-shaped structure, and the inner side of the rear end of the auxiliary furnace tube body 2 is fixedly connected with symmetrically arranged delay plates 11 at equal intervals, which is convenient for reducing temperature changes, and the main furnace tube body 1 and the auxiliary furnace tube body 2 are both composed of a heating tube 12 and a coating 13 sprayed inside the heating tube 12, and the coating 13 is a RLHY-201 high-temperature heat-conductive, wear-resistant, anti-corrosive, anti-coking and energy-saving coating, so it is convenient to delay the coking of the heating furnace tube structure;

[0044] like Figure 1 and Figure 6 , and the temperature of the main furnace tube body 1 can be sensed by a temperature measuring thermocouple 16 which is limited by an arc clamp 15 on the outside of the main furnace tube body 1, and the control and display panel 10 can display the temperature sensed by the temperature measuring thermocouple 16, so that the operating personnel can adjust the temperature and avoid a large temperature difference in the heating furnace tube structure, so that the heating furnace tube structure can extend the furnace tube decoking time. The above electrical components are all prior art and will not be described in detail here.

[0045] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating furnace tube structure capable of delaying furnace tube coking, comprising: A main furnace tube body (1); characterized in that the rear end of the main furnace tube body (1) is welded and connected to a plurality of auxiliary furnace tube bodies (2) at equal intervals and is located on an extension line of the main furnace tube body, and the rear ends of the auxiliary furnace tube bodies (2) are all nested in the heat insulation board (3); The main furnace tube body (1) is in a stepped structure with a narrow front and a wide rear. A temperature measuring structure is arranged outside the front end of the main furnace tube body (1), comprising a temperature measuring thermocouple (16) fitted outside the thin tube body at the front end of the main furnace tube body (1). The auxiliary furnace tube body (2) is a funnel-shaped structure with a thick rear end and a gradually thin front end; a limited position fixing structure is arranged on the outer side of the front end of the auxiliary furnace tube body (2) at both ends, and the limited position fixing structure comprises a fixing plate (5) and a clamp-shaped movable plate (6); the fixing plate (5) is a T-shaped plate, the head of which is an arc-shaped plate that fits and embraces the outer wall of the thin end of the auxiliary furnace tube body (2), and the tail of which fits and is fixed on the back of the main furnace tube body (1); the movable plates (6) are two arc-shaped clamp plates that are nested on the outer side of the auxiliary furnace tube body (2), and the inner ends of the two movable plates (6) are rotatably connected to the two ends of the arc-shaped plates, and the outer ends are provided with butt-jointed ear plates, which are connected and fixed to the thin end of the auxiliary furnace tube body (2) by bolts after butt-jointing; The heat insulation board (3) is provided with an annular nesting groove (31) corresponding to the rear end of the auxiliary furnace tube body, the rear end thick end of the auxiliary furnace tube body (2) is inserted into the nesting groove for positioning, a through hole is provided on the heat insulation board (3) corresponding to the center of the nesting groove to communicate with the auxiliary furnace tube body (2), and a communication control structure is installed inside the through hole, which includes a solenoid valve (8) and a connecting sleeve (9), the connecting sleeve (9) is an annular sleeve with an interface at the rear end, and the connecting sleeve (9) is embedded in the through hole; the solenoid valve (8) control switch is installed in the connecting sleeve (9); A plurality of arc-shaped delay plates (11) are fixedly connected to the rear side wall of the auxiliary furnace tube body (2) at equal intervals and symmetrically in the front-to-back direction, and the delay plates (11) are tilted and suspended toward the thin end of the auxiliary furnace tube body (2).

2. A heating furnace tube structure capable of delaying furnace tube coking according to claim 1, characterized in that: The four corners of the heat insulation board (3) are provided with mounting holes (4).

3. A heating furnace tube structure capable of delaying furnace tube coking according to claim 1, characterized in that: A sealing gasket (7) is arranged in the nesting groove of the heat insulation plate (3) along the outer circle of the auxiliary furnace tube body (2), and is tightly connected and sealed with the outer wall of the auxiliary furnace tube body and the side wall of the nesting groove.

4. A heating furnace tube structure capable of delaying furnace tube coking according to claim 1, characterized in that: The main furnace tube body (1) and the auxiliary furnace tube body (2) are both composed of a heating tube (12) and a coating (13) sprayed inside the heating tube (12), and the coating (13) is RLHY-201 high-temperature heat-conductive, wear-resistant, anti-corrosive, anti-coking and energy-saving coating.

5. The heating furnace tube structure capable of delaying furnace tube coking according to claim 1, characterized in that: The temperature measuring thermocouple (16) is fixed by a clamping device, and the clamping device comprises: a semi-annular receiving plate (14) fixedly engaged with the outside of the capillary body, and a pair of arc-shaped clamps (15) rotatably connected to the two ends of the receiving plate (14), and the outer end of the arc-shaped clamp (15) is provided with a docking ear plate which is connected by bolts after docking, and the temperature measuring thermocouple (16) is clamped by the arc-shaped clamp (15) on the outer wall of the capillary body.

6. A heating furnace tube structure capable of delaying furnace tube coking according to claim 1, characterized in that: A control and display panel (10) is installed on the heat insulation board (3).

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