A freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline

Abstract

The present invention relates to the technical field of pipes, and specifically discloses a freeze-resistant, pressure-resistant and explosion-proof carbon dioxide transmission pipeline, comprising a plurality of mutually docked pipe bodies, adjacent pipe bodies being spliced ​​by a connecting unit, the connecting unit comprising a cylinder and an end plate integrally arranged at the end of the pipe body; an annular groove is provided on the end surface opposite to the end plate, an annular sealing capsule is filled in the annular groove, and the annular sealing capsule is pre-filled with curing sealant; triggering parts are provided at both ends of the cylinder. When the local carbon dioxide gas pressure inside the pipeline is too high, the triggering part will automatically trigger, causing the annular sealing capsule to rupture, and the pre-filled curing sealant will flow out and fill the annular groove, and then solidify, thereby further improving the sealing and connection strength, preventing leakage and bursting due to excessive pressure, and improving the pressure resistance and explosion-proof performance of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of pipes, and more particularly to a freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline. Background Art

[0002] Carbon dioxide has important application value in oil extraction, especially in improving oil recovery. By injecting carbon dioxide into underground reservoirs, the purpose of oil displacement and production increase can be achieved. In recent years, with the development of carbon capture, utilization and storage technology, long-distance transmission pipelines can realize large-scale carbon dioxide transportation, meeting the huge demand for carbon dioxide in oil extraction.

[0003] In oil extraction, when transporting carbon dioxide, if the pressure in a local area of ​​the pipeline is too high, on the one hand, the sealing performance of the pipeline will decrease, increasing the risk of carbon dioxide leakage, and even causing the pipeline to burst, resulting in serious safety accidents; on the other hand, excessive pressure will intensify the liquefaction of carbon dioxide, and it is easy to form liquid accumulation at the bottom of the pipeline, increasing the risk of pipeline blockage. Moreover, the accumulated liquid has a high viscosity and poor flow performance, which will increase the flow resistance in the pipeline and reduce the transportation efficiency. It will not only increase the energy required for transportation, but may also cause the pressure drop in the pipeline to increase, affecting the normal operation of the pipeline. Summary of the invention

[0004] In order to overcome the above technical problems, the present invention proposes a freeze-resistant, pressure-resistant and explosion-proof carbon dioxide transportation pipeline.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline, comprising a plurality of mutually butted pipe bodies, adjacent pipe bodies being spliced ​​by a connecting unit, the connecting unit comprising a cylinder body and an end plate integrally arranged at the end of the pipe body, the cylinder body and the end plate being detachably connected by a connecting piece;

[0007] An annular groove is provided on the end surface of the cylinder body opposite to the end plate, an annular sealing capsule is filled in the annular groove, and the annular sealing capsule is pre-filled with curing sealant;

[0008] Both ends of the cylinder are provided with triggering members, and when the air pressure in the cylinder reaches a set threshold, the triggering member generates a triggering action to cause the annular sealing capsule to rupture, thereby causing the solidified sealant in the annular sealing capsule to flow out and solidify and fill the annular groove;

[0009] A heating element is arranged in the middle of the cylinder body for heating the carbon dioxide gas transported inside.

[0010] As a further solution of the present invention: the connecting piece includes a plurality of ears circumferentially distributed on the outer wall of the cylinder, a stud is movably provided in the ear, the stud passes through the end plates connecting the two ends of the cylinder, and a nut is threadedly sleeved on the stud.

[0011] As a further solution of the present invention: the trigger member includes a cavity opened inside the cylinder, an axially movable conical thorn rod is arranged in the cavity, an annular recessed groove is opened on the inner wall of the cylinder, an annular elastic capsule is embedded in the annular recessed groove, and a linkage member connected to the annular elastic capsule and the conical thorn rod is also arranged in the cavity.

[0012] As a further solution of the present invention: the linkage part includes an L-shaped bracket fixed in the cavity, the L-shaped bracket is provided with a vertically distributed axial slide groove and a radial slide groove, an axial slider is slidably arranged in the axial slide groove, a radial slider is slidably arranged in the radial slide groove, and a connecting rod is hinged between the axial slider and the radial slider; the conical thorn rod is fixed on the axial slider, and a push plate adapted to the annular elastic capsule is fixed on the radial slider.

[0013] As a further solution of the present invention: a connecting groove is provided between the cavity and the annular groove, and the connecting groove is used to accommodate the cone thorn rod.

[0014] As a further solution of the present invention: a guide rod is arranged in the radial slide groove, the radial slider is slidably sleeved on the guide rod, and a spring abutting against the radial slider is movably sleeved on the guide rod.

[0015] As a further solution of the present invention: a temporary storage cavity is provided at the bottom of the cylinder, a discharge port is provided on one side of the annular recessed groove, a first flow channel is connected to the discharge port and the entrance of the temporary storage cavity, and a second flow channel is provided at the exit of the temporary storage cavity.

[0016] As a further solution of the present invention: a first sealing sheet adapted to the outlet of the temporary storage chamber is fixed on the radial slider, a second sealing sheet adapted to the first flow channel is fixed on the axial slider, and an avoidance groove for accommodating the second sealing sheet is provided in the first sealing sheet.

[0017] As a further solution of the present invention: the heating element includes a plurality of heating discs axially distributed in the inner cavity of the cylinder, and the heating discs are provided with a plurality of through holes; an installation cavity is provided in the cylinder, and a plurality of electric heating rings are arranged in an array in the installation cavity.

[0018] As a further solution of the present invention: a heat conduction cavity is provided between the installation cavity and the inner cavity of the cylinder, and a heat conduction partition is provided between the heat conduction cavity and the installation cavity; the heat conduction cavity is filled with heat conduction oil, an annular heat conduction plate is immersed in the heat conduction oil, and a plurality of heat conduction grooves are provided circumferentially on the annular heat conduction plate; the annular heat conduction plate is connected to each heating disc through a plurality of groups of heat conduction columns distributed circumferentially.

[0019] Beneficial effects of the present invention:

[0020] When the local carbon dioxide gas pressure inside the pipeline is too high, the trigger will automatically trigger, causing the annular sealing capsule to rupture, and the pre-filled solidified sealant will flow out and fill the annular groove, and then solidify, further improving the sealing and connection strength, preventing leakage and bursting due to excessive pressure, and improving the pressure resistance and explosion-proof performance of the pipeline; the heating component can heat the carbon dioxide gas flowing through, gradually compensate for the heat loss of the carbon dioxide gas during the transportation process, so that the temperature of the carbon dioxide gas is always maintained within a stable range, avoiding liquefaction or reduced flow performance due to too low temperature, and ensuring transportation efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the pipe body and the connecting unit in the present invention;

[0024] Figure 3 A schematic structural diagram of the pipe body and the connecting unit in the present invention from another perspective;

[0025] Figure 4 is a cross-sectional view of a connecting unit in the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0028] Figure 7 is an axial cross-sectional view of the cylinder in the present invention;

[0029] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0030] Fig. 9 It is a radial cross-sectional view of the cylinder in the present invention.

[0031] In the figure:

[0032] 100, tube body; 200, connecting unit; 210, cylinder; 211, annular groove; 212, connecting groove; 213, annular recessed groove; 214, temporary storage cavity; 215, drain port; 216, first flow channel; 217, second flow channel; 218, first sealing sheet; 2181, avoidance groove; 219, second sealing sheet; 220, end plate; 230, annular sealing capsule; 231, curing sealant; 240, trigger; 241, cavity; 242, L-shaped bracket; 2421, axial slide groove; 242 2. Radial slide groove; 243. Axial slider; 244. Radial slider; 245. Connecting rod; 246. Conical thorn rod; 247. Push plate; 248. Guide rod; 249. Spring; 2410. Annular elastic capsule; 250. Heat tracing element; 251. Heat tracing plate; 2511. Through hole; 252. Heat conduction cavity; 253. Heat conduction column; 254. Annular heat conduction plate; 2541. Heat conduction groove; 255. Mounting cavity; 256. Electric heating ring; 257. Heat conduction baffle; 260. Ear; 270. Stud; 280. Nut. DETAILED DESCRIPTION

[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0034] See also Figure 1 , Figure 2 and Figure 3 The present invention discloses a freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline, comprising a plurality of mutually butted pipe bodies 100, adjacent pipe bodies 100 being spliced ​​by connecting units 200, the connecting unit 200 comprising a cylinder 210 and an end plate 220 integrally arranged at the end of the pipe body 100, the cylinder 210 and the end plate 220 being detachably connected by a connecting piece;

[0035] See also Figure 4 and Figure 5 The end surfaces of the cylinder 210 and the end plate 220 are both provided with an annular groove 211, and an annular sealing capsule 230 is filled in the annular groove 211, and the annular sealing capsule 230 is pre-filled with a curing sealant 231;

[0036] The two ends of the cylinder 210 are provided with triggering members 240. When the air pressure in the tube 100 reaches a set threshold, the triggering member 240 generates a triggering action to rupture the annular sealing capsule 230, thereby causing the solidified sealant 231 in the annular sealing capsule 230 to flow out and solidify and fill the annular groove 211.

[0037] A heating element 250 is disposed in the middle of the cylinder 210 for heating the carbon dioxide gas transported inside.

[0038] Specifically, the annular sealing capsule 230 is embedded in the annular grooves 211 at both ends of the cylinder 210, and then the end plate 220 on the corresponding tube body 100 is butted with the end of the cylinder 210, so that the annular sealing capsule 230 is wrapped in the annular grooves 211 on both sides, and the gap between the cylinder 210 and the end plate 220 is sealed by the annular sealing capsule 230; after the end plates 220 at both ends are spliced, the cylinder 210 and the end plates 220 at both ends are connected and fixed by connecting pieces;

[0039] During the transportation of carbon dioxide gas, when the carbon dioxide gas passes through the corresponding connection unit 200, the heating element 250 in the cylinder 210 can heat the carbon dioxide gas flowing through, thereby gradually compensating for the heat loss of the carbon dioxide gas during the transportation process, so that the temperature of the carbon dioxide gas is always maintained within a stable range, and the carbon dioxide gas is prevented from liquefying or reducing its flow performance due to too low a temperature;

[0040] During normal transportation, the annular sealing capsules 230 at both ends of the cylinder 210 can effectively seal the gaps between adjacent tube bodies 100, thereby ensuring the airtightness of the entire transportation pipeline; when the local carbon dioxide gas pressure inside the pipeline is too high, the sealing of the annular sealing capsules 230 in this area is at risk of failure, which can easily cause carbon dioxide gas leakage in this area; accordingly, when the gas pressure exceeds the set threshold, the trigger member 240 is automatically triggered, thereby causing the annular sealing capsule 230 at the end of the cylinder 210 to rupture, and the pre-filled curing sealant 231 inside the annular sealing capsule 230 overflows and fills the annular groove 211, and then the curing sealant 231 is cured, thereby improving the sealing and connection strength between the cylinder 210 and the adjacent tube body 100, preventing the internal carbon dioxide gas from leaking at this position, and improving the pressure resistance and explosion-proof performance of the entire pipeline.

[0041] The curing sealant 231 may be an anaerobic sealant, which will cure rapidly upon contact with air to form a strong and flexible sealing layer, thereby filling the tiny gaps on the surface of the annular groove 211 and providing an effective sealing effect.

[0042] It is worth noting that the present invention can effectively seal the gap between adjacent pipe bodies 100 by filling the annular sealing capsule 230 in the annular groove 211 of the cylinder 210 and the end plate 220, thereby ensuring the airtightness of the entire conveying pipeline. The annular sealing capsule 230 can maintain good sealing performance during normal conveying to prevent carbon dioxide gas leakage;

[0043] When the local carbon dioxide gas pressure inside the pipeline is too high, the trigger 240 will be automatically triggered, causing the annular sealing capsule 230 to rupture, and the pre-filled solidifying sealant 231 will flow out and fill the annular groove 211, and then solidify, further improving the sealing and connection strength, preventing leakage and bursting caused by excessive pressure, and improving the pressure resistance and explosion-proof performance of the pipeline; through the multiple protection mechanisms of the annular sealing capsule 230, the solidifying sealant 231 and the trigger 240, it is ensured that the pipeline can maintain good sealing and pressure resistance under various working conditions, thereby improving the reliability and safety of the entire system;

[0044] A heating element 250 is provided in the middle of the cylinder 210, which can heat the carbon dioxide gas flowing through, gradually compensate for the heat loss of the carbon dioxide gas during the transportation process, so that the temperature of the carbon dioxide gas is always maintained within a stable range, avoiding liquefaction or reduced flow performance due to too low temperature, ensuring transportation efficiency and safety. It is suitable for carbon dioxide transportation in different environments and working conditions, especially in low temperature and high pressure environments, and can effectively prevent pipeline blockage and leakage, ensuring stable operation of the system.

[0045] Furthermore, a plurality of groups of trigger members 240 are provided at both ends of the cylinder 210, and each group of trigger members 240 is evenly distributed along the circumference of the cylinder 210, so that the annular sealing capsule 230 can be ruptured at multiple circumferential points, so that the solidified sealant 231 in the annular sealing capsule 230 can overflow from each rupture point at the same time to evenly fill the entire annular groove 211, thereby effectively improving the overall sealing effect.

[0046] For further information, see Figure 3 The connecting member includes a plurality of sleeve ears 260 distributed circumferentially on the outer wall of the cylinder 210, wherein a stud 270 is movably provided in the sleeve ears 260, and the stud 270 penetrates the end plate 220 connecting the two ends of the cylinder 210, and a nut 280 is threadedly sleeved on the stud 270;

[0047] The end plate 220 is butted with the end of the cylinder 210, and the stud 270 is passed through the end plate 220 and the ear 260 in sequence, and then connected to the stud 270 through the nut 280, so that the pipe body 100 and the cylinder 210 can be connected and fixed.

[0048] In one embodiment, see Figure 4 and Figure 5The trigger member 240 includes a cavity 241 opened inside the cylinder 210, an axially movable cone rod 246 is arranged in the cavity 241, an annular recessed groove 213 is opened on the inner wall of the cylinder 210, an annular elastic capsule 2410 is embedded in the annular recessed groove 213, and a linkage member connected with the annular elastic capsule 2410 and the cone rod 246 is also arranged in the cavity 241;

[0049] Specifically, the annular elastic capsule 2410 in the cylinder 210 can be adaptively elastically expanded and contracted according to the pressure of the carbon dioxide gas flowing through the pipeline. When the carbon dioxide pressure increases, the annular elastic capsule 2410 radially expands and retracts into the annular recessed groove 213. Under the action of the linkage, the conical thorn rod 246 can be synchronously driven to move axially, so that the conical thorn rod 246 enters the corresponding annular groove 211. When the carbon dioxide pressure exceeds the set threshold, the radial expansion of the annular elastic capsule 2410 can just drive the conical thorn rod 246 to puncture the annular sealing capsule 230 in the annular groove 211 through the linkage, so that the cured sealant 231 in the annular sealing capsule 230 flows out and solidifies.

[0050] It is worth noting that through the automatic trigger mechanism, when the air pressure exceeds the set threshold, the annular sealing capsule 230 can be punctured in time to release the cured sealant 231, thereby enhancing the sealing and connection strength, preventing the internal carbon dioxide gas from leaking at this position, and improving the pressure resistance and explosion-proof performance of the entire pipeline; the adaptive elastic telescopic adjustment function of the annular elastic capsule 2410 can monitor the air pressure changes in the pipeline in real time to ensure that the system operates within a safe range.

[0051] For further information, see Figure 5 The linkage member includes an L-shaped bracket 242 fixed in the cavity 241, and the L-shaped bracket 242 is provided with an axial slide groove 2421 and a radial slide groove 2422 which are vertically distributed. An axial slider 243 is slidably arranged in the axial slide groove 2421, and a radial slider 244 is slidably arranged in the radial slide groove 2422. A connecting rod 245 is hinged between the axial slider 243 and the radial slider 244; the cone thorn rod 246 is fixed on the axial slider 243, and a push plate 247 adapted to the annular elastic capsule 2410 is fixed on the radial slider 244;

[0052] Specifically, when the annular elastic capsule 2410 is compressed back into the annular recessed groove 213, it can synchronously push the push plate 247 to retract into the cavity 241, thereby driving the radial slider 244 to slide along the radial groove 2422, and under the transmission of the connecting rod 245, the axial slider 243 is driven to slide along the axial groove 2421, so as to drive the conical piercing rod 246 to move toward the side of the corresponding annular sealing capsule 230, thereby puncturing the annular sealing capsule 230.

[0053] Accordingly, see Figure 5 A connecting groove 212 is provided between the cavity 241 and the annular groove 211, and the connecting groove 212 is used to accommodate the cone thorn rod 246;

[0054] In the initial state, the front end of the cone thorn rod 246 is located in the connecting groove 212 . When the annular elastic capsule 2410 pushes the push plate 247 , the cone thorn rod 246 can extend from the connecting groove 212 into the annular clamping groove 211 .

[0055] For further information, see Figure 5 A guide rod 248 is provided in the radial slide groove 2422, and the radial slider 244 is slidably sleeved on the guide rod 248. A spring 249 abutting against the radial slider 244 is movably sleeved on the guide rod 248;

[0056] Specifically, in the initial state, due to the elastic force of the spring 249, the radial slider 244 is always located at one end of the radial slide groove 2422 close to the annular recessed groove 213, so that the push plate 247 can always be close to the annular elastic capsule 2410; when the annular elastic capsule 2410 is pressed to push the push plate 247, the spring 249 is compressed and stores energy, so that the push plate 247 and the annular elastic capsule 2410 can be driven to reset after the air pressure is reduced.

[0057] Considering that when the carbon dioxide gas pressure increases, part of the carbon dioxide will liquefy and accumulate at the bottom of the cylinder 210. The density of liquid carbon dioxide is relatively high, and it is easy to form liquid accumulation at the bottom of the pipeline, increasing the risk of pipeline blockage, especially at the low point or elbow of the pipeline, where liquid carbon dioxide is more likely to accumulate, resulting in partial blockage of the pipeline; in addition, the viscosity of liquid carbon dioxide is relatively high and the flow performance is relatively poor, which will increase the flow resistance in the pipeline and reduce the transportation efficiency, which will not only increase the energy required for transportation, but also may cause an increase in the pressure drop in the pipeline, affecting the normal operation of the pipeline;

[0058] To do this, see Figure 6 A temporary storage chamber 214 is provided at the bottom of the cylinder 210, a discharge port 215 is provided on one side of the annular recessed groove 213, a first flow channel 216 is connected to the inlet of the temporary storage chamber 214 through the discharge port 215, and a second flow channel 217 is provided at the outlet of the temporary storage chamber 214;

[0059] When the air pressure in the pipeline is lower than the set threshold, the annular elastic capsule 2410 can seal the drain port 215 under the push of the push plate 247. When the air pressure in the pipeline exceeds the set threshold, the annular elastic capsule 2410 expands radially, thereby opening the drain port 215. The liquid accumulated at the bottom of the cylinder 210 can flow out from the drain port 215 and pass through the first flow channel 216, the temporary storage chamber 214 and the second flow channel 217 to be discharged from the pipeline in sequence until the air pressure in the pipeline recovers to below the set threshold again, and the annular elastic capsule 2410 blocks the drain port 215 again.

[0060] Further, to improve the smoothness of fluid drainage, please refer to Figure 6 The radial slider 244 is fixed with a first sealing sheet 218 adapted to the outlet of the temporary storage chamber 214, the axial slider 243 is fixed with a second sealing sheet 219 adapted to the first flow channel 216, and the first sealing sheet 218 is provided with an avoidance groove 2181 for accommodating the second sealing sheet 219;

[0061] Specifically, in the initial state, the annular elastic capsule 2410 can block the leakage port 215, and the second sealing sheet 219 can perform secondary blocking on the first flow channel 216, thereby ensuring the air tightness of the entire pipeline;

[0062] When the annular elastic capsule 2410 is pressed to push the push plate 247, the radial slider 244 can drive the first sealing sheet 218 to slide into the temporary storage chamber 214, and at the same time, the axial slider 243 drives the second sealing sheet 219 to move out of the first flow channel 216 until the first sealing sheet 218 blocks the outlet of the temporary storage chamber 214, and at the same time, the drain port 215 and the first flow channel 216 are connected, and the accumulated liquid in the cylinder 210 flows into the temporary storage chamber 214 through the drain port 215 and the first flow channel 216, thereby realizing the transition transfer of the accumulated liquid from the inside of the cylinder 210 to the temporary storage chamber 214;

[0063] When the air pressure inside the cylinder 210 drops below a set threshold, the annular elastic capsule 2410 returns to its initial state, the drain port 215 is closed again, and at the same time the second sealing sheet 219 blocks the first flow channel 216, while the first sealing sheet 218 is moved out from the outlet of the temporary storage chamber 214, so that the accumulated liquid in the temporary storage chamber 214 flows out from the second flow channel 217.

[0064] It is worth noting that the annular elastic capsule 2410 can automatically control the opening and closing of the drain port 215 according to the change of the carbon dioxide pressure in the pipeline; when the pressure exceeds the set threshold, the annular elastic capsule 2410 radially expands to open the drain port 215 to discharge the accumulated fluid; when the pressure is lower than the set threshold, the annular elastic capsule 2410 returns to the initial state and closes the drain port 215 to ensure the airtightness of the pipeline;

[0065] The accumulated liquid flows into the temporary storage chamber 214 through the drain port 215 and the first flow channel 216, and then is discharged from the pipeline through the second flow channel 217. This path design ensures that the accumulated liquid can be discharged smoothly and prevents the accumulated liquid from accumulating in the pipeline.

[0066] The annular elastic capsule 2410 and the second sealing sheet 219 work together to ensure that the discharge port 215 and the first flow channel 216 maintain good sealing during normal transportation to prevent gas leakage. When the annular elastic capsule 2410 is pressed to push the push plate 247, the first sealing sheet 218 and the second sealing sheet 219 work together to ensure that the air tightness of the pipeline is not affected during the discharge of the accumulated liquid.

[0067] Through the coordinated action of the first sealing plate 218 and the second sealing plate 219, the discharge process of the accumulated liquid is ensured to be smooth, avoiding pressure fluctuations in the pipeline caused by the excessive discharge of the accumulated liquid; the transition process of the accumulated liquid from the inside of the cylinder 210 to the temporary storage chamber 214 is smooth, ensuring that the discharge of the accumulated liquid will not have a significant impact on the air pressure and flow in the pipeline.

[0068] In yet another embodiment, see Figure 7 and Figure 8 The heating disc 251 includes a plurality of heating discs 251 axially distributed in the inner cavity of the cylinder 210, and a plurality of through holes 2511 are provided on the heating disc 251; a mounting cavity 255 is provided in the cylinder 210, and a plurality of electric heating rings 256 are arranged in an array in the mounting cavity 255;

[0069] Specifically, each group of heating disks 251 in the inner cavity of the cylinder 210 is heated by the electric heating ring 256. When the carbon dioxide gas in the pipeline flows through the through hole 2511 on the heating disk 251, the heating disk 251 can evenly heat the flowing carbon dioxide gas, thereby compensating the gas temperature step by step. The provision of the through hole 2511 can greatly increase the contact area between the heating disk 251 and the carbon dioxide gas, thereby improving the heat exchange efficiency.

[0070] For further information, see Figure 8 and Fig. 9 In order to realize the heat transfer from the electric heating ring 256 to the heating plate 251, a heat conduction cavity 252 is provided between the installation cavity 255 and the inner cavity of the cylinder 210, and a heat conduction partition 257 is provided between the heat conduction cavity 252 and the installation cavity 255; the heat conduction cavity 252 is filled with heat conduction oil, and an annular heat conduction plate 254 is immersed in the heat conduction oil, and a plurality of heat conduction grooves 2541 are provided circumferentially on the annular heat conduction plate 254; the annular heat conduction plate 254 is connected to each heating plate 251 through a plurality of groups of heat conduction columns 253 distributed circumferentially;

[0071] Specifically, the electric heating ring 256 in the installation cavity 255 generates heat, which is transferred to the heat-conducting oil in the heat-conducting cavity 252 through the heat-conducting baffle 257. The annular heat-conducting plate 254 immersed in the heat-conducting oil absorbs the heat of the surrounding heat-conducting oil, and then transfers the heat evenly to each group of heating disks 251 through the heat-conducting column 253, thereby achieving uniform heating of the heating disks 251; the heat-conducting groove 2541 can greatly increase the heat exchange area between the heat-conducting oil and the annular heat-conducting plate 254, thereby effectively improving the heat conduction efficiency.

[0072] It is worth noting that, through the above structure, the electric heating ring 256 is effectively separated from the heating disk 251, thereby preventing the electric heating ring 256 from being directly exposed to the internal conveying channel of the cylinder 210 and being corroded and damaged; at the same time, the transition of the heat transfer oil and the annular heat transfer plate 254 is utilized to achieve uniform heat transfer, thereby achieving uniform and efficient heating of the heating disk 251, ensuring heating accuracy and uniformity.

[0073] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline, comprising a plurality of mutually connected pipe bodies (100), characterized in that: Adjacent tube bodies (100) are spliced ​​together via a connecting unit (200), wherein the connecting unit (200) comprises a cylinder body (210) and an end plate (220) integrally arranged at the end of the tube body (100), and the cylinder body (210) and the end plate (220) are detachably connected via a connecting piece; An annular groove (211) is provided on the end surface of the cylinder (210) and the end plate (220) opposite to each other, an annular sealing capsule (230) is filled in the annular groove (211), and the annular sealing capsule (230) is pre-filled with curing sealant (231); A triggering member (240) is provided at both ends of the cylinder (210). When the air pressure in the tube (100) reaches a set threshold value, the triggering member (240) generates a triggering action to cause the annular sealing capsule (230) to rupture, thereby causing the solidified sealant (231) in the annular sealing capsule (230) to flow out and solidify and fill the annular groove (211). The triggering member (240) comprises a cavity (241) provided inside the cylinder (210), an axially movable conical thorn rod (246) is provided in the cavity (241), an annular recessed groove (213) is provided on the inner wall of the cylinder (210), an annular elastic capsule sheet (2410) is embedded in the annular recessed groove (213), and a linkage member connected to the annular elastic capsule sheet (2410) and the conical thorn rod (246) is also provided in the cavity (241); A heating element (250) is provided in the middle of the cylinder (210) for performing heating treatment on the carbon dioxide gas transported inside; the heating element (250) comprises a plurality of heating discs (251) axially distributed in the inner cavity of the cylinder (210), and a plurality of through holes (2511) are provided on the heating discs (251); an installation cavity (255) is provided in the cylinder (210), and a plurality of electric heating rings (256) are arranged in an array in the installation cavity (255); The linkage member comprises an L-shaped bracket (242) fixed in the cavity (241), the L-shaped bracket (242) is provided with an axial slide groove (2421) and a radial slide groove (2422) which are vertically distributed, an axial slider (243) is slidably arranged in the axial slide groove (2421), a radial slider (244) is slidably arranged in the radial slide groove (2422), and a connecting rod (245) is hinged between the axial slider (243) and the radial slider (244); the cone thorn rod (246) is fixed on the axial slider (243), and a push plate (247) adapted to the annular elastic capsule (2410) is fixed on the radial slider (244); A temporary storage chamber (214) is provided at the bottom of the cylinder (210), a flow discharge port (215) is provided on one side of the annular recessed groove (213), a first flow channel (216) is connected between the flow discharge port (215) and the entrance of the temporary storage chamber (214), and a second flow channel (217) is provided at the exit of the temporary storage chamber (214); A first sealing sheet (218) adapted to the outlet of the temporary storage chamber (214) is fixed on the radial slider (244), a second sealing sheet (219) adapted to the first flow channel (216) is fixed on the axial slider (243), and an avoidance groove (2181) for accommodating the second sealing sheet (219) is provided in the first sealing sheet (218).

2. The freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline according to claim 1 is characterized in that: The connecting piece comprises a plurality of sleeve ears (260) distributed circumferentially on the outer wall of the cylinder (210), wherein a stud (270) is movably provided in the sleeve ears (260), and the stud (270) penetrates the end plates (220) connected to the two ends of the cylinder (210), and a nut (280) is threadedly sleeved on the stud (270).

3. The freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline according to claim 1 is characterized in that: A communication groove (212) is provided between the cavity (241) and the annular clamping groove (211), and the communication groove (212) is used to accommodate the cone piercing rod (246).

4. The freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline according to claim 1 is characterized in that: A guide rod (248) is provided in the radial sliding groove (2422), the radial sliding block (244) is slidably sleeved on the guide rod (248), and a spring (249) is movably sleeved on the guide rod (248) and abuts against the radial sliding block (244).

5. The freeze-resistant, pressure-resistant and explosion-proof carbon dioxide delivery pipeline according to claim 1 is characterized in that: A heat conduction cavity (252) is provided between the installation cavity (255) and the inner cavity of the cylinder (210), and a heat conduction baffle (257) is provided between the heat conduction cavity (252) and the installation cavity (255); the heat conduction cavity (252) is filled with heat conduction oil, an annular heat conduction plate (254) is immersed in the heat conduction oil, and a plurality of heat conduction grooves (2541) are circumferentially provided on the annular heat conduction plate (254); the annular heat conduction plate (254) and each heating disc (251) are connected via a plurality of groups of heat conduction columns (253) distributed circumferentially.

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