Automatic control device for low-temperature ethylene vaporizer
By integrating a mechanical de-icing structure and an automatic control system, the problem of ice formation in the low-temperature ethylene gasifier was solved, and the inner wall of the gasification chamber and the gas outlet were cleaned simultaneously, improving the equipment's continuous operation capability and gasification efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING LONGXIANG LIQUID CHEM STORAGE DOCK CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-02
AI Technical Summary
During the vaporization process, the formation of ice layers in low-temperature ethylene vaporizers can obstruct gas flow and pose safety hazards. Traditional de-icing methods are difficult to achieve precise and real-time automated operation, and their control logic is complex and their response is lagging.
It adopts an integrated mechanical de-icing structure and a dual scraper ring system driven by an electric push rod to achieve synchronous cleaning of the inner wall of the vaporization chamber and the air outlet. By using the linkage of ball screw pair and gear set, the control logic is simplified and the consistency and reliability of the action are ensured.
Ice removal can be completed without interrupting the gasification process, improving the continuous operation capability of the equipment, reducing system complexity, avoiding high-temperature thermal stress damage and human error, and ensuring the stability of gasification efficiency.
Smart Images
Figure CN224315926U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ethylene gasification devices, specifically to an automatic control device for a low-temperature ethylene gasifier. Background Technology
[0002] During the process of converting liquid ethylene into gas in a low-temperature ethylene vaporizer, ice often forms on the inner wall of the vaporization chamber and at the gas outlet due to the heat absorption of vaporization and the influence of ambient temperature. This ice not only hinders gas flow and reduces vaporization efficiency, but may also cause safety hazards such as pipeline blockage and abnormal pressure. Traditional de-icing methods mostly rely on shutdown heating and use independently controlled electric heating elements to melt ice locally, but such methods are difficult to achieve precise and real-time automated de-icing operations.
[0003] Existing mechanical de-icing devices often require multiple independent drive mechanisms, resulting in complex control logic, delayed response, and even the need to frequently interrupt the gasification process to adapt to the de-icing action.
[0004] In view of this, an automatic control device for a low-temperature ethylene vaporizer is proposed. Utility Model Content
[0005] The purpose of this invention is to address the lack of an automatic control device for precise de-icing in existing low-temperature ethylene vaporizers, and to provide an automatic control device for low-temperature ethylene vaporizers.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automatic control device for a low-temperature ethylene gasifier, comprising a gasifier body, an inlet for introducing liquid ethylene at the bottom of the gasifier, an outlet for outputting gaseous ethylene at the top of the gasifier, a gasification chamber for converting liquid ethylene into gaseous ethylene between the inlet and the outlet, two mounting plates fixedly connected inside the gasification chamber, electric push rods mounted on the two mounting plates, a first scraper ring for de-icing and cleaning the outlet fixedly connected to the extended end of the electric push rods via a connecting rod, and a second scraper ring for de-icing and cleaning the inner wall of the gasification chamber slidably disposed inside the gasification chamber.
[0007] Preferably, an upper mounting frame and a lower mounting frame are fixedly connected inside the gasification chamber. The upper mounting frame and the lower mounting frame are rotatably connected to a screw. A threaded sleeve is connected to the screw via a ball screw thread. A slider is fixedly connected to the second scraper ring. A groove adapted to the size of the slider is opened on the inner wall of the gasification chamber. A crossbar is fixedly connected to the second scraper ring. The threaded sleeve is fixedly connected to the crossbar.
[0008] Preferably, a movable plate is fixedly connected to the bottom of the connecting rod, a rack is fixedly connected to the bottom of the movable plate, a rotating rod is rotatably connected to the upper mounting bracket, a drive gear and a first bevel gear are fixedly connected to the rotating rod, a second bevel gear is fixedly connected to the top of the screw, the drive gear meshes with the rack, and the first bevel gear meshes with the second bevel gear.
[0009] Preferably, the size of the first scraper ring is adapted to the inner wall surface of the air outlet, so that when the first scraper ring moves from one end of the air outlet to the other end, it can just scrape off the ice layer on the inner wall surface of the air outlet.
[0010] Preferably, the second scraper ring is in close contact with the inner wall of the gasification chamber.
[0011] Preferably, the fixed end of the electric push rod is fixedly connected to one of the two mounting plates, and the extended end of the electric push rod is slidably disposed on the other mounting plate of the two mounting plates. When the electric push rod extends to its limit distance, the first scraper ring moves exactly to the end of the air outlet.
[0012] Compared with the prior art, this utility model has the following beneficial effects:
[0013] The automatic control device for the low-temperature ethylene gasifier provided by this utility model, through the integrated mechanical de-icing structure and the automatic control system, can complete the synchronous cleaning of the inner wall of the gasification chamber and the gas outlet without interrupting the gasification process, which significantly improves the continuous operation capability of the equipment.
[0014] The automatic control device for the low-temperature ethylene vaporizer provided by this utility model adopts a single drive source to link multiple ice scraping components, which reduces system complexity and ensures the consistency and reliability of action response.
[0015] The automatic control device for the low-temperature ethylene gasifier provided by this utility model replaces the traditional electric heating ice melting or manual intervention with mechanical scraping, avoiding the risk of high-temperature thermal stress damage or human operation error, and effectively maintaining the structural integrity of the gasification chamber and the stability of gasification efficiency. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0017] Figure 1 This is a schematic diagram of the internal structure of a gasifier according to an embodiment of the present invention.
[0018] Figure 2 This is a cross-sectional schematic diagram of the gasification chamber according to an embodiment of the present invention.
[0019] Figure 3 This is a diagram showing the positional relationship between the first scraper ring and the second scraper ring according to an embodiment of the present invention.
[0020] Figure 4 This is an exploded view of the electric push rod and connecting rod according to an embodiment of the present invention.
[0021] Figure 5 This is a diagram showing the connection relationship of the screw in one embodiment of the present invention.
[0022] In the picture:
[0023] 1. Gasifier body; 101. Liquid inlet; 102. Gas outlet; 103. Gasification chamber; 2. Mounting plate; 3. Electric push rod; 4. Connecting rod; 5. First scraper ring; 6. Upper mounting bracket; 7. Lower mounting bracket; 8. Screw; 81. Screw sleeve; 9. Second scraper ring; 10. Crossbar; 11. Sliding block; 12. Slide groove; 13. Movable plate; 14. Rack; 141. Rotating rod; 15. Drive gear; 16. First bevel gear; 17. Second bevel gear. Detailed Implementation
[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0025] Please see Figure 1-5 .
[0026] This utility model relates to an automatic control device for a low-temperature ethylene gasifier, comprising a gasifier body 1, an inlet 101 for introducing liquid ethylene at the bottom of the gasifier, and an outlet 102 for outputting gaseous ethylene at the top of the gasifier. A gasification chamber 103 for converting liquid ethylene into gaseous ethylene is disposed between the inlet 101 and the outlet 102. Two mounting plates 2 are fixedly connected inside the gasification chamber 103, and electric push rods 3 are mounted on the two mounting plates 2. The extended ends of the electric push rods 3 are fixed by connecting rods 4. A first scraper ring 5 is connected to the air outlet 102 for de-icing and cleaning, and a second scraper ring 9 is slidably installed inside the vaporization chamber 103 for de-icing and cleaning the inner wall of the vaporization chamber 103. This arrangement, with the electric push rod 3 connected by two mounting plates 2, ensures the stability of power transmission. At the same time, the dual de-icing structure of the first scraper ring 5 targeting the air outlet 102 and the second scraper ring 9 covering the inner wall of the vaporization chamber 103 enables the simultaneous cleaning of ice layers in different areas, avoiding the problem of residual ice layers caused by insufficient coverage of a single ice scraper device.
[0027] The vaporization chamber 103 is fixedly connected to an upper mounting bracket 6 and a lower mounting bracket 7. The upper mounting bracket 6 and the lower mounting bracket 7 are rotatably connected to a screw 8. A threaded sleeve 81 is threadedly connected to the screw 8 via a ball screw pair. A slider 11 is fixedly connected to the second scraper ring 9. A groove 12 adapted to the size of the slider 11 is opened on the inner wall surface of the vaporization chamber 103. A crossbar 10 is fixedly connected to the second scraper ring 9. The threaded sleeve 81 is fixedly connected to the crossbar 10. With this configuration, the rotational motion is converted into linear sliding of the second scraper ring 9 through the precise transmission of the screw 8 and the ball screw pair. Combined with the limiting effect of the groove 12 on the slider 11, the second scraper ring 9 is ensured to move stably along the inner wall surface of the vaporization chamber 103, avoiding deviation or jamming caused by uneven force during the ice scraping process, and improving the uniformity and reliability of the ice layer removal on the inner wall.
[0028] Specifically, a movable plate 13 is fixedly connected to the bottom of the connecting rod 4, and a rack 14 is fixedly connected to the bottom of the movable plate 13. A rotating rod 141 is rotatably connected to the upper mounting bracket 6, and a drive gear 15 and a first bevel gear 16 are fixedly connected to the rotating rod 141. A second bevel gear 17 is fixedly connected to the top of the screw 8. The drive gear 15 meshes with the rack 14, and the first bevel gear 16 meshes with the second bevel gear 17. With this configuration, the linear motion of the rack 14 driven by the electric push rod 3 and the meshing linkage between the gear set and the bevel gear are used to convert the linear motion of the first scraping ring 5 into the rotational motion of the screw 8. Thus, a single electric push rod 3 can simultaneously drive the scraping action of the air outlet 102 and the inner wall of the vaporization chamber 103, simplifying the control logic and reducing the energy consumption and failure rate of multi-motor drives, thereby reducing the investment of power resources.
[0029] Secondly, the size of the first scraper ring 5 is matched with the inner wall of the air outlet 102, so that when the first scraper ring 5 moves from one end of the air outlet 102 to the other end, it can just scrape off the ice layer on the inner wall of the air outlet 102. This setting ensures that the scraper ring fully contacts the ice layer during the movement of the scraper ring by precisely matching the size of the first scraper ring 5 with the inner wall of the air outlet 102.
[0030] Secondly, the second scraper ring 9 is in close contact with the inner wall of the gasification chamber 103. This arrangement is to ensure that the ice layer on the inner wall of the gasification chamber 103 can be removed more effectively.
[0031] Furthermore, the fixed end of the electric push rod 3 is fixedly connected to one of the two mounting plates 2, and the extended end of the electric push rod 3 is slidably mounted on the other mounting plate 2. When the electric push rod 3 extends to its limit distance, the first scraper ring 5 just moves to the end of the air outlet 102. This arrangement restricts the movement trajectory and distributes the load of the push rod by providing sliding support to the extended end of the electric push rod 3 through the mounting plate 2, preventing the scraper ring from jamming due to push rod skew. At the same time, the mechanical limiting function of the limit distance ensures that the first scraper ring 5 can cover the entire length of the air outlet 102 with each movement, avoiding local ice residue due to insufficient stroke.
[0032] In addition, when the first scraper ring 5 moves from the initial position to the end of the air outlet 102, the slider 11 moves from one end of the slide groove 12 to the other end of the slide groove 12. This arrangement allows the first scraper ring 5 to clean the air outlet 102 while the second scraper ring 9 completes the full-range ice scraping action of the inner wall of the vaporization chamber 103. This achieves precise coordination of the dual-area de-icing operation and avoids repeated operations or blind spots caused by asynchronous actions.
[0033] Working principle:
[0034] When the automatic control device of the low-temperature ethylene gasifier is working, if ice appears on the inner wall of the outlet 102 or the gasification chamber 103, the electric push rod 3 is activated and pushes the connecting rod 4 to extend towards the outlet 102, causing the first scraper ring 5 to move linearly along the inner wall of the outlet 102. The scraper ring edge is used to directly scrape the ice layer by tightly adhering to the pipe wall. Simultaneously, the movable plate 13 at the bottom of the connecting rod 4 drives the rack 14 downwards. The rack 14 meshes with the drive gear 15, causing the rotating rod 141 to rotate. The rotating rod 141 drives the screw 8 to rotate through the meshing of the first bevel gear 16 and the second bevel gear 17. The rotational motion of the screw 8 is transmitted through the rolling action of the rollers... The ball screw pair is converted into the axial displacement of the screw sleeve 81, which in turn is pulled by the crossbar 10 to slide synchronously along the groove 12 on the inner wall of the vaporization chamber 103. This allows the second scraper ring 9 to spirally scrape away the ice layer while closely adhering to the chamber wall. When the electric push rod 3 reaches its maximum stroke, the first scraper ring 5 moves to the end of the air outlet 102 to complete the cleaning of that area. Meanwhile, the second scraper ring 9 reaches the other end of the vaporization chamber 103 synchronously through the limit of the slider 11 in the groove 12, realizing the mechanical linkage and stroke matching of the dual-area ice scraping action. Finally, the electric push rod 3 retracts, driving all components to reset. The entire process can automatically complete the ice removal without interrupting the vaporization process.
[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. An automatic control device for a low-temperature ethylene gasifier, comprising a gasifier body (1), characterized in that: The gasifier has an inlet (101) at the bottom for introducing liquid ethylene and an outlet (102) at the top for outputting gaseous ethylene. A gasification chamber (103) for converting liquid ethylene into gaseous ethylene is provided between the inlet (101) and the outlet (102). Two mounting plates (2) are fixedly connected inside the gasification chamber (103). Electric push rods (3) are provided on the two mounting plates (2). The extended end of the electric push rods (3) is fixedly connected to a first scraper ring (5) for de-icing and cleaning the outlet (102) through a connecting rod (4). A second scraper ring (9) for de-icing and cleaning the inner wall of the gasification chamber (103) is slidably provided inside the gasification chamber (103).
2. The automatic control device for a low-temperature ethylene vaporizer as described in claim 1, characterized in that: The gasification chamber (103) is fixedly connected to an upper mounting bracket (6) and a lower mounting bracket (7). The upper mounting bracket (6) and the lower mounting bracket (7) are rotatably connected to a screw (8). A screw sleeve (81) is connected to the screw (8) through a ball screw thread. A slider (11) is fixedly connected to the second scraper ring (9). A groove (12) adapted to the size of the slider (11) is opened on the inner wall surface of the gasification chamber (103). A crossbar (10) is fixedly connected to the second scraper ring (9). The screw sleeve (81) is fixedly connected to the crossbar (10).
3. The automatic control device for a low-temperature ethylene vaporizer as described in claim 2, characterized in that: A movable plate (13) is fixedly connected to the bottom of the connecting rod (4), and a rack (14) is fixedly connected to the bottom of the movable plate (13). A rotating rod (141) is rotatably connected to the upper mounting bracket (6). A drive gear (15) and a first bevel gear (16) are fixedly connected to the rotating rod (141). A second bevel gear (17) is fixedly connected to the top of the screw (8). The drive gear (15) meshes with the rack (14), and the first bevel gear (16) meshes with the second bevel gear (17).
4. The automatic control device for a low-temperature ethylene vaporizer as described in claim 1, characterized in that: The first scraper ring (5) is adapted to the size of the inner wall surface of the air outlet (102) so that when the first scraper ring (5) moves from one end of the air outlet (102) to the other end, it can just scrape off the ice layer on the inner wall surface of the air outlet (102).
5. The automatic control device for a low-temperature ethylene vaporizer as described in claim 1, characterized in that: The second scraper ring (9) is in close contact with the inner wall of the gasification chamber (103).
6. The automatic control device for a low-temperature ethylene vaporizer as described in claim 1, characterized in that: The fixed end of the electric push rod (3) is fixedly connected to one of the two mounting plates (2), and the extended end of the electric push rod (3) is slidably disposed on the other mounting plate (2) of the two mounting plates (2). When the electric push rod (3) extends to the limit distance, the first scraper ring (5) just moves to the end of the air outlet (102).