Regenerated air preheating and recycling device of propane and isobutane mixed dehydrogenation device

Abstract

The invention relates to the technical field of dehydrogenation devices, in particular to a regenerated air preheating and recycling device of a propane-isobutane mixed dehydrogenation device, which comprises a propane-isobutane mixed dehydrogenation tower, the right side of the propane-isobutane mixed dehydrogenation tower is communicated and provided with a dehydrogenation preheating cylinder, and the right side of the propane-isobutane mixed dehydrogenation tower is provided with a support table; a pumping assembly and a driving assembly are mounted on the supporting table; the pumping assembly comprises a pump body, the pump body is fixedly installed on the upper side of the supporting table, and a valve plate is slidably installed on the inner side of the pump body. By means of the arranged pumping assembly, heat conduction oil can circularly flow to achieve the heat conduction effect, piston type design is adopted for the pumping assembly, when the valve plate slides towards the right side, hydraulic pressure in the pump body can eject the valve deck open, the heat conduction oil can smoothly pass through the valve plate and flow towards the valve plate, and the continuous one-way pumping requirement is met; and each sealing assembly in the pumping assembly is made of a high-temperature-resistant material, so that high temperature can be resisted, the stable working performance of the pumping assembly is realized, and the practicability is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of dehydrogenation devices, and particularly to a device for preheating and recycling the regeneration air of a propane-isobutane mixed dehydrogenation device. Background Art

[0002] Propane-isobutane mixed dehydrogenation is an important chemical production technology, mainly used for converting propane and isobutane into corresponding olefins, namely propylene and isobutene.

[0003] With the development of the global economy, the demand for organic chemical raw materials such as propylene and isobutene continues to grow. Propylene is the second largest chemical raw material after ethylene and is widely used in the production of dozens of chemical products such as polypropylene, ethylene oxide, acrylic acid, acrylonitrile, butanol and octanol. Isobutene is also an important chemical raw material and can be used to produce high-value-added chemical products such as butyl rubber, methyl tert-butyl ether, methyl methacrylate, polyisobutene, and methacrylonitrile; in the currently relatively high market share propane / isobutane mixed dehydrogenation process, the high-temperature flue gas generated during the heating and regeneration process of the reactor is often directly discharged or inefficiently utilized, resulting in problems such as low energy utilization efficiency. Existing heat exchange systems usually use ordinary shell-and-tube heat exchangers, which have disadvantages such as poor heat exchange effect and high operating costs. These heat exchangers cannot meet the demand for efficient recovery of the waste heat of high-temperature flue gas, restricting the energy efficiency improvement of the entire dehydrogenation device.

[0004] In order to improve energy utilization efficiency and reduce production costs, it is particularly important to develop an efficient energy recovery and recycling system. Therefore, we propose a device for preheating and recycling the regeneration air of a propane-isobutane mixed dehydrogenation device. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for preheating and recycling the regeneration air of a propane-isobutane mixed dehydrogenation device to improve energy utilization efficiency and reduce production costs.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A device for preheating and recycling the regeneration air of a propane-isobutane mixed dehydrogenation device, comprising a propane-isobutane mixed dehydrogenation tower. A dehydrogenation preheating cylinder is connected and installed on the right side of the propane-isobutane mixed dehydrogenation tower. A support platform is arranged on the right side of the propane-isobutane mixed dehydrogenation tower, and a pumping component and a driving component are installed on the support platform.

[0008] Further, the pumping assembly includes a pump body fixedly installed on the upper side of the support platform. A valve plate is slidably installed inside the pump body. A number of round holes are formed in the valve plate. An installation base is correspondingly arranged on the right side of the round holes. An arc rod is fixedly connected to the side wall of the installation base, and the end of the arc rod is screwed to the right side of the valve plate. A sleeve is fixedly installed on the left side of the installation base. A sliding cylinder is slidably installed inside the sleeve. A first spring is fixedly connected between the sliding cylinder and the inner side of the sleeve. A tension sensor is fixedly connected to the end of the first spring. The left side of the sliding cylinder passes through to the left side of the round hole and a valve cover is fixedly installed at the end of the sliding cylinder.

[0009] Further, a metal sealing gasket ring is fixedly installed at the bottom of the valve cover. A metal ring is fixedly installed on the left side surface of the round hole. The diameter of the sliding cylinder is smaller than the inner diameter of the round hole. A ceramic sealing ring is fixedly installed on the outer circle of the valve plate.

[0010] Further, left and right end covers are respectively screwed and installed at both ends of the pump body. A drive shaft is fixedly installed on the right side of the valve plate. The drive shaft slides through to the outside of the right end cover and a first docking plate is fixedly installed at the outer side end of the drive shaft.

[0011] Further, a heat-absorbing spiral tube is embedded on the inner wall of the propane isobutane mixed dehydrogenation tower, and a heat-transfer spiral tube is embedded on the inner wall of the dehydrogenation preheating cylinder. An output pipe is connected and installed between the heat-absorbing spiral tube and the left end cover. The heat-absorbing spiral tube is communicated with the heat-transfer spiral tube. A return pipe is connected and installed between the heat-transfer spiral tube and the pump body. A one-way valve is installed on the return pipe. Heat-conducting oil is filled in the pump body, output pipe, heat-absorbing spiral tube, heat-transfer spiral tube and return pipe.

[0012] Further, the drive assembly includes a chassis fixedly installed on the upper side of the support platform. A motor is fixedly installed on the upper side of the support platform. The output end of the motor passes through to the inside of the chassis and a cam is fixedly installed on the output end of the motor. A fixed cylinder is fixedly installed on the left side of the chassis. A movable shaft is slidably inserted inside the fixed cylinder. A roller is rotatably installed at the inner side end of the movable shaft. A fixed ring is fixedly installed on the side wall of the movable shaft. A strong spring is fixedly connected between the fixed ring and the fixed cylinder. The roller abuts against the cam.

[0013] Further, a second docking plate is fixedly installed at the left end of the movable shaft. The second docking plate is screwed to the first docking plate. An infrared temperature sensor is fixedly installed at the bottom inside the chassis.

[0014] Further, a box cover is fixedly installed on the upper side of the chassis. Heat dissipation holes are formed on both sides of the chassis. An inclined surface cylinder is fixedly installed on the upper side of the cam. A sliding connection cylinder and a number of air cylinders are fixedly installed on the box cover. The sliding connection cylinder and the air cylinders penetrate through the upper and lower sides of the box cover.

[0015] Further, a sliding rod is slidably installed inside the sliding cylinder. A plurality of folding rods are fixedly installed on the side wall of the sliding rod. A circular plate is fixedly installed at the lower end of the folding rod. The circular plates correspond to the air cylinders one by one, and the outer diameter of the circular plate is adapted to the inner diameter of the air cylinder. A bottom mounting block is fixedly installed on the lower side of the sliding rod. A rolling ball is rotatably installed on the lower side of the bottom mounting block. The rolling ball abuts against the upper side of the inclined surface cylinder. A limiting groove is formed in the sliding rod. A limiting convex block adapted to the limiting groove is fixedly installed inside the sliding cylinder. A dust-proof cover is fixedly installed on the upper side of the box cover. The folding rods and the circular plates are all located inside the dust-proof cover.

[0016] Further, a lateral knocking rod is fixedly connected to the side of the upper end of the sliding rod. A base is arranged on the side of the lateral knocking rod. The base is fixedly installed on the upper side of the box cover. An electric telescopic rod is fixedly installed on the upper side of the base. A side support is fixedly installed on the output end of the electric telescopic rod. A second spring is fixedly installed on the side of the side support. A bell is fixedly installed at the end of the second spring.

[0017] Compared with the related art, the regenerated air preheating and recycling device of the propane and isobutane mixed dehydrogenation device proposed by the present invention has the following beneficial effects:

[0018] In the present invention, in the regenerated air preheating and recycling device of the propane and isobutane mixed dehydrogenation device, through the arranged pumping assembly, components such as a pump body, a valve plate, a drive shaft, and a valve cover are arranged in the pumping assembly. When the valve plate slides laterally to the left inside the pump body, at this time, the valve plate can push the heat-conducting oil inside the pump body to flow into the heat-absorbing spiral tube and the heat-transfer spiral tube through the output tube on the left, and finally flow back from the return tube, so that the heat-conducting oil forms a cycle. The heat-conducting oil can absorb the heat generated during the reaction inside the propane and isobutane mixed dehydrogenation tower during the flowing path and circulate and transfer it to

[0019] the dehydrogenation preheating cylinder, so that the heat of the high-temperature flue gas generated by the reaction inside the propane and isobutane mixed dehydrogenation tower can be fully utilized. This heat is used for preheating the gas before dehydrogenation. In addition, the pumping assembly set in the present invention adopts a piston design. When the valve plate slides to the right, the hydraulic pressure in the pump body will push open the valve cover, so that the heat-conducting oil can smoothly pass through the valve plate and flow towards the valve plate, realizing the continuous one-way pumping requirement. All the sealing components in the pumping assembly are made of high-temperature resistant materials and can withstand high temperatures, realizing its stable working performance and strengthening its practicability;

[0020] In the present invention, for the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device, through the provided driving assembly, in the driving assembly, the starting motor can drive the cam to rotate. The roller rotatably installed at the end of the movable shaft driven by the strong spring inside the fixed cylinder always abuts against the cam. Thus, when the motor drives the cam to rotate, it drives the left movable shaft to perform a reciprocating linear motion. The left movable shaft is screwed to the first docking plate at the right end of the driving shaft through the second docking plate. Therefore, the movable shaft can drive the driving shaft to perform a reciprocating linear motion, enabling the driving shaft to drive the valve plate to perform a piston motion inside the pump body, providing power for the operation of the pump body. In addition, the entire driving assembly and the pumping assembly are detachably arranged, facilitating subsequent disassembly and maintenance work;

[0021] In the present invention, for the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device, through the inclined surface cylinder installed on the cam, when the cam rotates, it can drive the inclined surface cylinder to rotate synchronously. When the inclined surface cylinder rotates, the position points on its upper side in contact with the rolling ball change up and down, thereby driving the rolling ball and the sliding rod on the rolling ball to move up and down. Further, the sliding rod drives the circular plate fixedly connected to its side to slide inside the air cylinder. When the circular plate slides out of the upper side of the air cylinder from the inside of the air cylinder, an air extraction effect is generated, causing the gas inside the chassis to flow to the outside of the air cylinder. When the circular plate slides from the upper side into the inside of the air cylinder, the air is pushed from the air cylinder into the inside of the chassis. As the circular plate continuously slides up and down, the air flow inside the chassis is enhanced, playing a role in cooling the parts inside the chassis and preventing the parts from overheating and resulting in low transmission efficiency;

[0022] In the present invention, for the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device, through the infrared temperature sensor installed inside the chassis, the temperature of the parts inside the chassis can be detected in real time. When the temperature is too high, the electric telescopic rod pushes the bell closer. Under the action of the sliding rod driving the lateral knocking rod on its side to move up and down, when the lateral knocking rod continuously knocks on the bell, a corresponding sound is emitted to remind the staff that the parts inside the driving assembly are overheated and need to be cooled in time to prevent the parts from being damaged due to overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic three-dimensional structure diagram of the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device proposed by the present invention Figure 1 ;

[0024] Figure 2 is a schematic three-dimensional structure diagram of the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device proposed by the present invention Figure 2 ;

[0025] Figure 3 is a schematic three-dimensional structure diagram of the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device proposed by the present inventionFigure 3 ;

[0026] Figure 4 Partial three - dimensional structure schematic of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 1 ;

[0027] Figure 5 Partial three - dimensional structure schematic of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 2 ;

[0028] Figure 6 Schematic diagram of the partial three - dimensional disassembled structure of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention;

[0029] Figure 7 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 1 ;

[0030] Figure 8 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 2 ;

[0031] Figure 9 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 3 ;

[0032] Figure 10 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 4

[0033] Figure 11 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 5 ;

[0034] Figure 12 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 6 ;

[0035] Figure 13 Schematic diagram of the three - dimensional disassembled structure of the pumping component of the regeneration air pre - heating and recycling device for the propane - isobutane mixed dehydrogenation unit proposed by the present invention Figure 7 ;

[0036] Figure 14 Schematic three-dimensional disassembled structure of the driving component of the regeneration air preheating and recycling device for the propane-isobutane mixed dehydrogenation unit proposed by the present invention Figure 1 ;

[0037] Figure 15 Schematic three-dimensional disassembled structure of the driving component of the regeneration air preheating and recycling device for the propane-isobutane mixed dehydrogenation unit proposed by the present invention Figure 2 ;

[0038] Figure 16 Schematic three-dimensional disassembled structure of the driving component of the regeneration air preheating and recycling device for the propane-isobutane mixed dehydrogenation unit proposed by the present invention Figure 3 ;

[0039] Figure 17 Schematic three-dimensional disassembled structure of the driving component of the regeneration air preheating and recycling device for the propane-isobutane mixed dehydrogenation unit proposed by the present invention Figure 4 ;

[0040] Figure 18 Schematic three-dimensional disassembled structure of the driving component of the regeneration air preheating and recycling device for the propane-isobutane mixed dehydrogenation unit proposed by the present invention Figure 5 。

[0041] In the figure: 1. Propane-isobutane mixed dehydrogenation tower; 2. Dehydrogenation preheating cylinder; 3. Support platform; 4. Pumping component; 41. Pump body; 42. Left cover; 43. Right cover; 44. Driving shaft; 45. First docking plate; 46. Valve plate; 47. Ceramic sealing ring; 48. Installation base; 49. Arc rod; 410. Sleeve; 411. Slide cylinder; 412. Valve cover; 413. Metal sealing gasket ring; 414. First spring; 415. Tensile sensor; 416. Round hole; 417. Metal ring; 5. Driving component; 51. Chassis; 52. Box cover; 53. Motor; 54. Cam; 55. Inclined plane cylinder; 56. Fixed cylinder; 57. Moving shaft; 58. Second docking plate; 59. Fixed ring; 510. Strong spring; 511. Roller; 512. Infrared temperature sensor; 513. Heat dissipation hole; 514. Dust cover; 515. Slide connection cylinder; 516. Slide rod; 517. Limit groove; 518. Folding rod; 519. Round plate; 520. Bottom mounting block; 521. Ball; 522. Air duct; 523. Lateral knocking rod; 524. Base; 525. Electric telescopic rod; 526. Side support; 527. Second spring; 528. Bell; 6. Output pipe; 7. Heat absorption spiral pipe; 8. Heat transfer spiral pipe; 9. Return pipe; 91. Check valve. Detailed implementation manners

[0042] The present invention will be further described below in conjunction with the accompanying drawings and implementation manners.

[0043] First Embodiment:

[0044] Please refer to Figures 1 - 13 , the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation unit: It includes a propane-isobutane mixed dehydrogenation tower 1. A dehydrogenation preheating cylinder 2 is connected and installed on the right side of the propane-isobutane mixed dehydrogenation tower 1. A support platform 3 is arranged on the right side of the propane-isobutane mixed dehydrogenation tower 1. A pumping assembly 4 and a driving assembly 5 are installed on the support platform 3.

[0045] Specifically, the pumping assembly 4 includes a pump body 41. The pump body 41 is fixedly installed on the upper side of the support platform 3. A valve plate 46 is slidably installed inside the pump body 41. A number of round holes 416 are opened on the valve plate 46. An installation base 48 is correspondingly arranged on the right side of the round holes 416. An arc rod 49 is fixedly connected to the side wall of the installation base 48. The end of the arc rod 49 is screwed to the right side of the valve plate 46. The installation base 48 and the arc rod 49 can be detached from the right side of the valve plate 46. A sleeve 410 is fixedly installed on the left side of the installation base 48. A sliding cylinder 411 is slidably installed inside the sleeve 410. A first spring 414 is fixedly connected between the sliding cylinder 411 and the inside of the sleeve 410. A tension sensor 415 is fixedly connected to the end of the first spring 414. The tension sensor 415 is fixedly connected to the first spring 414. Thus, the tension value generated on the first spring 414 can be detected by the inner tension sensor 415. The left side of the sliding cylinder 411 passes through to the left side of the round hole 416 and a valve cover 412 is fixedly installed at the end of the sliding cylinder 411.

[0046] Through the above setting, the first spring 414 provides a return force to drive the valve cover 412 to abut against the left side surface of the valve plate 46. When the valve plate 46 is pushed to the left side of the pump body 41, at this time the liquid pressure pushes to the right side. In this case, the valve cover 412 still closely adheres to the valve plate 46. Thus, the valve plate 46 can push the liquid to flow to the left side. When the valve plate 46 is pushed to the right side, at this time the hydraulic pressure in the pump body 41 is to the left side. The hydraulic pressure to the left side can overcome the return force of the first spring 414, so that the valve cover 412 is opened. Thus, the liquid can flow through the round hole 416 to the left side of the pump body 41. Thus, when the valve plate 46 reciprocates in the pump body 41 in a piston-like motion, a continuous pushing flow effect to the left side can be generated inside the pump body 41. Thus, a continuous pumping effect is achieved. In addition, in the present invention, a tension sensor 415 is arranged inside the sleeve 410 and the sliding cylinder 411 connecting the valve cover 412, so as to detect whether the return force provided by the first spring 414 to the valve cover 412 is stable during the working process. A stable return force can ensure that the valve cover 412 can be timely attached to the valve plate 46, preventing the valve cover 412 from loosening and affecting the pumping efficiency of the entire pumping assembly 4.

[0047] Specifically, a metal sealing gasket ring 413 is fixedly installed at the bottom of the valve cover 412, a metal ring 417 is fixedly installed on the left side surface of the round hole 416, the diameter of the sliding cylinder 411 is smaller than the inner diameter of the round hole 416, and a ceramic sealing ring 47 is fixedly installed on the outer circle of the valve plate 46.

[0048] Through the above settings, the metal sealing gasket ring 413 and the metal ring 417 have high heat resistance. The sealing components in ordinary pump bodies are not applicable to this pumping component 4. Since the temperature of the heat-conducting oil transported in the pump body is relatively high, common rubber sealing gaskets cannot withstand its high temperature influence. In addition, the ceramic sealing ring 47 also has good sealing performance, which can reduce frictional losses while ensuring close contact between the outside of the valve plate 46 and the inner wall of the pump body 41.

[0049] Specifically, a left end cover 42 and a right end cover 43 are respectively installed on both ends of the pump body 41 by screwing. A driving shaft 44 is fixedly installed on the right side of the valve plate 46. The driving shaft 44 slides through to the outside of the right end cover 43, and a first docking plate 45 is fixedly installed on the outer end of the driving shaft 44.

[0050] Through the above settings, both the left and right sides of the pump body 41 can be disassembled, which is convenient for disassembling and overhauling the components inside the pump body 41, providing convenience for subsequent overhaul and maintenance work.

[0051] Specifically, a heat-absorbing spiral tube 7 is embedded on the inner wall of the propane isobutane mixed dehydrogenation tower 1, a heat-transfer spiral tube 8 is embedded on the inner wall of the dehydrogenation preheating cylinder 2, an output pipe 6 is connected and installed between the heat-absorbing spiral tube 7 and the left end cover 42, the heat-absorbing spiral tube 7 is connected to the heat-transfer spiral tube 8, a return pipe 9 is connected and installed between the heat-transfer spiral tube 8 and the pump body 41, a one-way valve 91 is installed on the return pipe 9, and the pump body 41, the output pipe 6, the heat-absorbing spiral tube 7, the heat-transfer spiral tube 8 and the return pipe 9 are filled with heat-conducting oil. It should be noted here that the outer sides of the output pipe 6 and the return pipe 9 are made of heat-insulating materials. Since the output pipe 6 and the return pipe 9 are exposed to the air, setting heat-insulating materials on their outer sides can reduce heat loss.

[0052] In this embodiment:

[0053] The valve plate 46 is driven by the drive shaft 44 to slide inside the pump body 41, driving the valve plate 46 to perform a reciprocating piston-like motion inside the pump body 41, pushing the heat-conducting oil to finally flow back into the pump body 41 through the output pipe 6, the heat-absorbing spiral pipe 7, the heat-transfer spiral pipe 8 and the return pipe 9, forming a circulating reflux effect. Since a large amount of heat is generated inside the propane-isobutane mixed dehydrogenation tower 1 during the dehydrogenation process, this heat will be transferred to the heat-absorbing spiral pipe 7 spirally embedded on the inner wall of the propane-isobutane mixed dehydrogenation tower 1, thereby increasing the temperature of the heat-conducting oil inside the heat-absorbing spiral pipe 7. The heated heat-conducting oil continues to flow from the heat-absorbing spiral pipe 7 to the heat-transfer spiral pipe 8 on the side, thereby increasing the temperature of the side surface of the heat-transfer spiral pipe 8 and heating the inside of the dehydrogenation preheating cylinder 2, so that the heat of the high-temperature flue gas generated by the reaction inside the propane-isobutane mixed dehydrogenation tower 1 can be fully utilized. This heat is used to preheat the gas before dehydrogenation, improving the utilization rate of resources and avoiding the loss and waste of heat.

[0054] Compared with the related art, the regeneration air preheating and recycling device of the propane-isobutane mixed dehydrogenation device provided by the present invention has the following beneficial effects:

[0055] In the present invention, the provided pumping assembly 4 can withstand high temperatures and stably form a circulating flow of the heat-conducting oil inside the pipeline. When the heat-conducting oil circulates, it can introduce the high temperature generated during the reaction inside the propane-isobutane mixed dehydrogenation tower 1 into the dehydrogenation preheating cylinder 2 to preheat the gas before dehydrogenation, so that the heat of the high-temperature flue gas generated by the reaction inside the propane-isobutane mixed dehydrogenation tower 1 can be fully utilized. At the same time, in the present invention, heat conduction is carried out indirectly by the heat-conducting oil, and the entire conduction process is continuously transmitted by the heat-conducting oil flowing inside the pipeline without the participation of other media, with small heat loss, high energy conversion rate, improving the recycling rate of resources and avoiding the waste of energy.

[0056] Second Embodiment:

[0057] Please refer to Figures 14 - 15 , in this embodiment, the driving assembly 5 includes a chassis 51, the chassis 51 is fixedly installed on the upper side of the support platform 3, a motor 53 is fixedly installed on the upper side of the support platform 3, the output end of the motor 53 passes through to the inside of the chassis 51 and a cam 54 is fixedly installed on the output end of the motor 53. A fixed cylinder 56 is fixedly installed on the left side of the chassis 51. An activity shaft 57 is slidably inserted inside the fixed cylinder 56. A roller 511 is rotatably installed at the inner end of the activity shaft 57. A fixed ring 59 is fixedly installed on the side wall of the activity shaft 57. A strong spring 510 is fixedly connected between the fixed ring 59 and the fixed cylinder 56. The roller 511 abuts against the cam 54, and the resilience provided by the strong spring 510 drives the roller 511 rotatably installed at the right end of the activity shaft 57 to always abut against the cam 54.

[0058] With the above settings, when the motor 53 starts, it can drive the cam 54 inside the chassis 51 to rotate through its output end. Due to the resilience provided by the strong spring 510, the roller 511 rotatably installed at the right end of the movable shaft 57 is always in contact with the cam 54. Then, when the cam 54 rotates continuously, it can drive the movable shaft 57 to perform a reciprocating linear motion from side to side. When the roller 511 rotatably installed at the right end of the movable shaft 57 is in contact with the cam 54, when the cam 54 rotates, its frictional force is reduced by the self-rotation of the roller 511. Thus, the cam 54 can stably drive the movable shaft 57 on the side to perform a reciprocating linear motion.

[0059] Specifically, a second docking plate 58 is fixedly installed at the left end of the movable shaft 57. The second docking plate 58 is screwed to the first docking plate 45, and an infrared temperature sensor 512 is fixedly installed at the bottom inside the chassis 51.

[0060] With the above settings, the entire drive assembly 5 and the pumping assembly 4 are screwed together through the first docking plate 45 and the second docking plate 58, enabling both the drive assembly 5 and the pumping assembly 4 to be disassembled separately, facilitating later maintenance work.

[0061] During use, when the motor 53 starts, it drives the cam 54 to rotate continuously through its output end, thereby driving the movable shaft 57 arranged on the left side to perform a reciprocating linear motion. The movable shaft 57 is screwed to the first docking plate 45 at the end of the drive shaft 44 through the second docking plate 58 at its end. Thus, the drive shaft 44 is driven to perform a reciprocating linear motion, driving the valve plate 46 to perform a reciprocating piston motion inside the pump body 41, providing continuous pumping power for the heat-conducting oil and driving power for the circulating flow of the heat-conducting oil.

[0062] Third Embodiment:

[0063] Please refer to Figures 16 - 17 In this embodiment, a box cover 52 is fixedly installed on the upper side of the chassis 51. Heat dissipation holes 513 are provided on both sides of the chassis 51. An inclined surface cylinder 55 is fixedly installed on the upper side of the cam 54. A sliding cylinder 515 and several air cylinders 522 are fixedly installed on the box cover 52. The sliding cylinder 515 and the air cylinders 522 penetrate the upper and lower sides of the box cover 52.

[0064] With the above settings, the heat dissipation holes 513 are provided on both sides of the chassis 51, and the heat dissipation holes 513 have a self-dust filtering effect inside, which can prevent dust from entering the inside of the chassis 51 and provide a heat dissipation air duct for the heat dissipation of the components inside the chassis 51. Since the cam 54 is continuously in contact with the roller 511, when the cam 54 rotates continuously, heat will be generated on both the roller 511 and the cam 54. When the temperature is relatively high, it will affect the transmission efficiency between the cam 54 and the roller 511. Therefore, providing heat dissipation can ensure the stability of the operation of the components inside the chassis 51 and ensure the transmission efficiency of the components inside the chassis 51.

[0065] Specifically, a slide bar 516 is slidably installed inside the sliding connection cylinder 515. A plurality of folding rods 518 are fixedly installed on the side wall of the slide bar 516. A circular plate 519 is fixedly installed at the lower end of the folding rod 518. The circular plate 519 corresponds to the position of the air duct 522 one by one, and the outer diameter of the circular plate 519 is adapted to the inner diameter of the air duct 522. A bottom mounting block 520 is fixedly installed on the lower side of the slide bar 516. A rolling ball 521 is rotatably installed on the lower side of the bottom mounting block 520. The rolling ball 521 abuts against the upper side of the inclined surface cylinder 55. A limiting groove 517 is formed on the slide bar 516. A limiting protrusion adapted to the limiting groove 517 is fixedly installed inside the sliding connection cylinder 515. A dust-proof cover 514 is fixedly installed on the upper side of the box cover 52. The folding rod 518 and the circular plate 519 are both located inside the dust-proof cover 514.

[0066] By adopting the above settings, the dust-proof cover 514 protects the air intake duct of the air duct 522, preventing dust from entering the chassis 51 through the air duct 522 and avoiding interference with the stable operation of the components inside the chassis 51 caused by dust. The setting of the limiting groove 517 and the limiting protrusion enables the slide bar 516 to have a degree of freedom of up and down sliding but no degree of freedom of rotation inside the sliding connection cylinder 515, ensuring that the circular plate 519 provided on the side of the slide bar always aligns with the air duct 522.

[0067] During use, when the motor 53 provides power output, the cam 54 on the upper side of its output end synchronously drives the inclined surface cylinder 55 to rotate. Then, the contact point between the inclined surface cylinder 55 and the rolling ball 521 on its upper side slides up and down along the inclined surface of the inclined surface cylinder 55, driving the slide bar 516 to slide up and down along the sliding connection cylinder 515, driving the circular plate 519 to reciprocate up and down in the air duct 522. As a result, a suction effect is generated in the air duct 522, enhancing the air flow inside the chassis 51, enabling the components inside the chassis 51 to obtain ventilation and heat dissipation, and allowing the components inside the chassis 51 to maintain a relatively suitable operating temperature, making the continuous operation more stable.

[0068] Fourth Embodiment:

[0069] Please refer to Figure 18 In this embodiment, a lateral knocking rod 523 is fixedly connected to the side of the upper end of the slide bar 516. A base 524 is provided on the side of the lateral knocking rod 523. The base 524 is fixedly installed on the upper side of the box cover 52. An electric telescopic rod 525 is fixedly installed on the upper side of the base 524. A side support 526 is fixedly installed at the output end of the electric telescopic rod 525. A second spring 527 is fixedly installed on the side of the side support 526. A bell 528 is fixedly installed at the end of the second spring 527.

[0070] With the above settings, the bell 528 is connected to the second spring 527. Thus, when the bell 528 is struck, it can emit a continuously decreasing sound. When the lateral striking rod 523 follows the sliding rod 516 and moves up and down continuously, it will continuously strike the bell 528, causing the bell 528 to continuously emit a sound.

[0071] During use, when the infrared temperature sensor 512 senses that the temperature inside the chassis 51 exceeds the limit, at this time, the electric telescopic rod 525 pushes the side support 526 to drive the bell 528 close to the lateral striking rod 523 on the side of the sliding rod 516. As the sliding rod 516 slides up and down under the guiding action of the upper inclined surface cylinder 55 of the cam 54, at this time, the lateral striking rod 523 moves up and down reciprocally synchronously, then the lateral striking rod 523 continuously strikes the bell 528, causing the bell 528 to continuously emit a sound, reminding the staff that the internal parts of the driving component are overheated and need to dissipate heat in time or reduce the output power to avoid damage to the parts due to overheating.

[0072] It should be noted here that in the prior art of the high-temperature alarm device, the automation alarm technology can be used to achieve it. The structure adopted in the present invention to link and strike the bell 528 has the following advantages:

[0073] Strong intuitiveness: The existing automation alarm technology usually alarms by means of the flashing of an electronic display screen, emitting an electronic prompt sound, etc. While the present invention uses the electric telescopic rod 525 to push the bell 528 close, and the lateral striking rod 523 continuously strikes the bell 528 to emit a sound to remind the staff. The sound signal is more easily detected by the staff in a noisy industrial environment. The staff does not need to always pay attention to the status of the electronic device and can quickly know that the internal parts of the driving component are overheated just by the sound, improving the timeliness and effectiveness of the transmission of alarm information.

[0074] Simple structure and high reliability: Some existing automation alarm technologies rely on complex electronic systems and software algorithms to achieve the alarm function, and may be affected by factors such as electromagnetic interference and software failures. The alarm structure of the present invention is mainly composed of simple mechanical components such as the electric telescopic rod 525, the bell 528, and the lateral striking rod 523, and does not rely on a complex electronic system, reducing the risk of alarm failure caused by electronic component failures, and having higher reliability and stability in the industrial production environment.

[0075] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A regeneration air preheating and recycling device for a propane isobutane mixed dehydrogenation device, characterized in that: The invention comprises a propane isobutane mixed dehydrogenation tower (1), wherein a dehydrogenation preheating cylinder (2) is connected to and installed on the right side of the propane isobutane mixed dehydrogenation tower (1), a support platform (3) is arranged on the right side of the propane isobutane mixed dehydrogenation tower (1), and a pumping component (4) and a driving component (5) are installed on the support platform (3); The pumping assembly (4) comprises a pump body (41), wherein the pump body (41) is fixedly mounted on the upper side of the support platform (3), a valve plate (46) is slidably mounted on the inner side of the pump body (41), a plurality of circular holes (416) are formed on the valve plate (46), a mounting base (48) is correspondingly arranged on the right side of the circular holes (416), an arc rod (49) is fixedly connected to the side wall of the mounting base (48), an end of the arc rod (49) is screwed to the right side of the valve plate (46), and the A sleeve (410) is fixedly installed on the left side of the mounting base (48), a slide cylinder (411) is slidably installed on the inner side of the sleeve (410), a first spring (414) is fixedly connected between the slide cylinder (411) and the inner side of the sleeve (410), a tension sensor (415) is fixedly connected to the end of the first spring (414), the left side of the slide cylinder (411) passes through to the left side of the circular hole (416) and a valve cover (412) is fixedly installed on the end of the slide cylinder (411).

2. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 1, characterized in that: A metal sealing ring (413) is fixedly mounted on the bottom of the valve cover (412), a metal ring (417) is fixedly mounted on the left side of the circular hole (416), the diameter of the slide cylinder (411) is smaller than the inner diameter of the circular hole (416), and a ceramic sealing ring (47) is fixedly mounted on the outer ring of the valve plate (46).

3. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 1, characterized in that: A left cover (42) and a right cover (43) are respectively screwed on both ends of the pump body (41), a drive shaft (44) is fixedly installed on the right side of the valve plate (46), the drive shaft (44) slides through to the outside of the right cover (43) and a first docking plate (45) is fixedly installed on the outer end of the drive shaft (44).

4. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 1, characterized in that: A heat absorbing spiral tube (7) is embedded on the inner wall of the propane-isobutane mixed dehydrogenation tower (1), a heat transfer spiral tube (8) is embedded on the inner wall of the dehydrogenation preheating cylinder (2), an output tube (6) is installed between the heat absorbing spiral tube (7) and the left cover (42), the heat absorbing spiral tube (7) is connected to the heat transfer spiral tube (8), a return tube (9) is installed between the heat transfer spiral tube (8) and the pump body (41), a one-way valve (91) is installed on the return tube (9), and the pump body (41), the output tube (6), the heat absorbing spiral tube (7), the heat transfer spiral tube (8) and the return tube (9) are filled with heat transfer oil.

5. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 1, characterized in that: The driving assembly (5) comprises a chassis (51), wherein the chassis (51) is fixedly mounted on the upper side of the support platform (3), a motor (53) is fixedly mounted on the upper side of the support platform (3), an output end of the motor (53) passes through the inner side of the chassis (51) and a cam (54) is fixedly mounted on the output end of the motor (53), a fixed cylinder (56) is fixedly mounted on the left side of the chassis (51), a movable shaft (57) is slidably inserted into the inner side of the fixed cylinder (56), a roller (511) is rotatably mounted on the inner side end of the movable shaft (57), a fixed ring (59) is fixedly mounted on the side wall of the movable shaft (57), a strong spring (510) is fixedly connected between the fixed ring (59) and the fixed cylinder (56), and the roller (511) is in contact with the cam (54).

6. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 5, characterized in that: A second docking plate (58) is fixedly mounted on the left end of the movable shaft (57), the second docking plate (58) being screwed to the first docking plate (45), and an infrared temperature sensor (512) is fixedly mounted on the inner bottom of the chassis (51).

7. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 5, characterized in that: A case cover (52) is fixedly mounted on the upper side of the case (51), heat dissipation holes (513) are provided on both sides of the case (51), a sloped cylinder (55) is fixedly mounted on the upper side of the cam (54), a sliding cylinder (515) and a plurality of air cylinders (522) are fixedly mounted on the case cover (52), and the sliding cylinder (515) and the air cylinders (522) both pass through the upper and lower sides of the case cover (52).

8. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 7, characterized in that: A sliding rod (516) is slidably mounted on the inner side of the sliding connection tube (515); a plurality of folding rods (518) are fixedly mounted on the side wall of the sliding rod (516); a circular plate (519) is fixedly mounted on the lower end of the folding rod (518); the circular plate (519) corresponds to the position of the air cylinder (522) one by one and the outer diameter of the circular plate (519) matches the inner diameter of the air cylinder (522); a bottom mounting block (520) is fixedly mounted on the lower side of the sliding rod (516); A rolling ball (521) is rotatably mounted on the lower side of the mounting block (520), and the rolling ball (521) abuts against the upper side of the inclined cylinder (55). A limiting groove (517) is provided on the sliding rod (516), and a limiting protrusion matched with the limiting groove (517) is fixedly mounted on the inner side of the sliding connection cylinder (515). A dust cover (514) is fixedly mounted on the upper side of the box cover (52), and the folding rod (518) and the circular plate (519) are both located on the inner side of the dust cover (514).

9. The regeneration air preheating and recycling device for the propane isobutane mixed dehydrogenation device according to claim 8, characterized in that: The upper side of the sliding rod (516) is fixedly connected to a lateral knocking rod (523), the side of the lateral knocking rod (523) is provided with a base (524), the base (524) is fixedly mounted on the upper side of the box cover (52), an electric telescopic rod (525) is fixedly mounted on the upper side of the base (524), a side support (526) is fixedly mounted on the output end of the electric telescopic rod (525), a second spring (527) is fixedly mounted on the side of the side support (526), ​​and a bell (528) is fixedly mounted on the end of the second spring (527).

Images