An auxiliary device for filling a carbon dioxide storage tank

Abstract

This utility model relates to the field of gas storage and filling technology, and discloses an auxiliary device for filling a carbon dioxide storage tank. It includes multiple flanges, each with multiple screws fixedly connected to its outer wall, and each screw with a nut threaded onto its outer wall. Each flange's outer wall is connected to a pipe, and each pipe's inner wall is equipped with a sealing mechanism. The flange's outer wall is also equipped with an anti-condensation mechanism, which includes multiple fixed columns, each fixedly connected to the inner wall of the pipe. In this utility model, during carbon dioxide transport, guide vanes guide it in a spiral motion, increasing the flow rate and preventing localized dry ice formation. A temperature sensor monitors the temperature and controls the heating wire to prevent dry ice condensation. When transport stops, a compression spring resets, causing a scraper to move along a groove to clean up dry ice, preventing carbon dioxide from turning into dry ice while simultaneously cleaning up any accidentally generated dry ice.

Description

Technical Field

[0001] This utility model relates to the field of gas storage and filling technology, and in particular to an auxiliary device for filling a carbon dioxide storage tank. Background Technology

[0002] Carbon dioxide storage tanks are containers used to store liquid and gaseous carbon dioxide. They are made of corrosion-resistant materials and have good sealing and pressure-bearing performance. Temperature and pressure can be controlled according to requirements. They are used in food processing, industrial manufacturing, and medical fields. Auxiliary devices for tank filling are important supporting equipment in the filling process. They include pressure regulating valves, flow meters, and liquid level monitors, which can accurately control the filling rate and volume, monitor the pressure and liquid level parameters inside the tank in real time, and are equipped with safety pressure relief devices to avoid safety problems caused by abnormal pressure during filling, ensuring the efficiency and safety of the filling operation.

[0003] The core components of the auxiliary device for filling traditional carbon dioxide storage tanks include a common piston compressor pump, a mechanical pressure gauge, and a basic safety valve. During filling, the pressure needs to be adjusted manually by monitoring the pressure gauge reading. The device also needs to be equipped with cooling water circulation to cool the pump body and prevent carbon dioxide from freezing and clogging the pipeline. However, there are still problems such as poor compatibility of the flange sealing structure, long-term leakage at the flange connection, and increased leakage when the temperature fluctuates.

[0004] Currently, auxiliary devices for filling carbon dioxide storage tanks have achieved intelligent and safety upgrades. The core consists of a ceramic plunger pump, a cryogenic pump, and an automatic control component. The cryogenic pump turns the carbon dioxide entering the pump body into liquid carbon dioxide, and the monitoring end issues an early warning and automatically shuts down the machine. The whole process achieves efficient and automated control of the filling process. However, there is still a problem that the local temperature at the phase change part is too low, causing the carbon dioxide to solidify into dry ice and block transportation. To address this, an auxiliary device for filling carbon dioxide storage tanks is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an auxiliary device for filling carbon dioxide storage tanks, which aims to improve the problem in the prior art where the local temperature of the phase change part is too low, causing carbon dioxide to solidify into dry ice and block transportation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary device for filling a carbon dioxide storage tank, comprising multiple flanges, multiple screws fixedly connected to the outer walls of the multiple flanges, nuts threadedly connected to the outer walls of the multiple screws, pipes connected to the outer walls of the multiple flanges, sealing mechanisms provided on the inner walls of the multiple pipes, and anti-condensation mechanisms provided on the outer walls of the multiple flanges. The anti-condensation mechanism includes multiple fixed columns, the outer walls of which are fixedly connected to the inner wall of the pipe. Two support columns are fixedly connected to the inner walls of each of the fixed columns. Heating wires are fixedly connected to the outer walls of each of the fixed columns. Temperature sensors are fixedly connected to the inner walls of each of the fixed columns. Compression springs are fixedly connected to the outer walls of each of the fixed columns. Multiple grooves are formed in the inner walls of the pipes. Flow guiding components are provided in the inner walls of each of the support columns. Cleaning components are provided in the outer walls of each of the compression springs.

[0007] The above technical solution involves monitoring the temperature inside the pipeline using a temperature sensor. When the temperature approaches the melting point of dry ice, the heating wire is controlled to heat the ice. The compression spring can drive the scraper to clean the dry ice after the carbon dioxide supply stops. The groove is used to limit the extension and retraction direction of the compression spring.

[0008] As a further description of the above technical solution: the sealing mechanism includes multiple expanded graphite stones, each of which is fixedly connected to the outer wall of the flange, and each of which has a rubber ring fixedly connected to the outer wall of the expanded graphite stones, and a stainless steel mesh fixedly connected to the outer wall of the rubber rings.

[0009] The above technical solution compensates for gaps by the deformation of the outer layer of expanded graphite with temperature difference, the middle layer of rubber ring provides sealing, and the inner layer of stainless steel mesh enhances the overall crush resistance of the gasket and fills the flange connection gap.

[0010] As a further description of the above technical solution: the sealing mechanism also includes a plurality of disc springs, the outer walls of the plurality of disc springs are fixedly connected to the outer wall of the screw, the outer walls of the plurality of disc springs are fixedly connected to two elastic rings, the inner walls of the plurality of flanges are fixedly connected to filler rings, and the outer walls of the plurality of flanges are fixedly connected to sealing rings.

[0011] The above technical solution involves: using a disc spring to absorb deformation and prevent damage to the gasket; using an elastic ring to absorb minor vibration displacement and compensate for the preload of the disc spring; and simultaneously, using a filler ring to seal the gap between the screw connections and the edge of the gasket.

[0012] As a further description of the above technical solution: the flow guiding assembly includes multiple rotating shafts, the outer walls of the multiple rotating shafts are fixedly connected to the outer walls of two support columns, the outer walls of the multiple rotating shafts are rotatably connected to rotating rings, and the outer walls of the multiple rotating rings are fixedly connected to multiple flow guiding blades.

[0013] Through the above technical solution: the guide vanes are driven during the transport of carbon dioxide, and they are fixed on the rotating ring and rotate on the rotating shaft to guide the carbon dioxide to move in a spiral motion, increase the flow rate, and avoid the formation of dry ice in local low temperature areas.

[0014] As a further description of the above technical solution: the cleaning component includes multiple air-sensing rings, the outer walls of the multiple air-sensing rings are fixedly connected to the outer wall of the compression spring, the outer walls of the multiple air-sensing rings are fixedly connected to scrapers, and the outer walls of the multiple scrapers are fixedly connected to multiple sliders.

[0015] The above technical solution involves the following: when carbon dioxide is transported, it drives the wind-sensing ring to move, and the movement of the wind-sensing ring drives the movement of the scraper blades. The movement track of the scraper blades is restricted by the slider, and the scraper blades clean the dry ice when the carbon dioxide is stopped.

[0016] As a further description of the above technical solution: a vacuum pump is connected to the outer wall of the pipeline, and a pressure regulating valve is also connected to the outer wall of the pipeline.

[0017] The above technical solution involves using a vacuum pump to evacuate the storage tank to increase the purity of carbon dioxide, and using a pressure regulating valve to precisely control the filling pressure, thereby ensuring stable pressure inside the storage tank.

[0018] As a further description of the above technical solution: a safety valve is connected to the outer wall of the pipeline, and a plunger pump is also connected to the outer wall of the pipeline.

[0019] The above technical solution uses a safety valve to prevent overpressure explosion and a plunger pump to extract liquid carbon dioxide from the storage tank and pressurize it to the filling pressure.

[0020] As a further description of the above technical solution: the outer wall of the front flange is connected to a cryogenic pump, and the outer walls of the multiple heating wires are fixedly connected to the inner wall of the pipe.

[0021] The above technical solution involves using a cryogenic pump to stably deliver low-temperature carbon dioxide and using a heating wire to heat the pipeline.

[0022] This utility model has the following beneficial effects: In this invention, when carbon dioxide begins to be transported, the guide vanes guide it to spiral motion, increasing the flow rate and preventing the formation of dry ice in local low-temperature areas. The temperature is monitored by a temperature sensor, and the heating wire is controlled to raise the temperature to prevent dry ice from condensing. When the transport stops, the compression spring resets and drives the scraper to move along the groove to clean up the dry ice, thus preventing carbon dioxide from turning into dry ice while cleaning up any accidentally generated dry ice.

[0023] In this invention, the outer layer of expanded graphite deforms with temperature difference to compensate for the gap, the middle layer of rubber ring provides sealing, and the inner layer of stainless steel mesh enhances the overall crush resistance of the gasket. At the same time, the disc spring and elastic ring gasket absorb deformation to achieve sealing. The sealing ring seals the edge of the gasket and the flange, so that the flange still has a good sealing effect when the temperature changes. Attached Figure Description

[0024] Figure 1This is a perspective view of an auxiliary device for filling a carbon dioxide storage tank according to the present invention; Figure 2 This is a front view of an auxiliary device for filling a carbon dioxide storage tank according to the present invention. Figure 3 This is a top view of an auxiliary device for filling a carbon dioxide storage tank according to the present invention; Figure 4 This is an exploded view of the flange of an auxiliary device for filling a carbon dioxide storage tank according to the present invention. Figure 5 This is a cross-sectional view of the pipeline of an auxiliary device for filling a carbon dioxide storage tank according to the present invention.

[0025] Legend: 1. Flange; 2. Nut; 3. Screw; 4. Sealing mechanism; 401. Expanded graphite; 402. Rubber ring; 403. Stainless steel mesh; 404. Disc spring; 405. Elastic gasket; 406. Filler ring; 407. Sealing ring; 5. Pipe; 6. Anti-condensation mechanism; 601. Fixed column; 602. Support column; 603. Flow guide assembly; 6031. Rotating shaft; 6032. Rotating ring; 6033. Flow guide vane; 604. Heating wire; 605. Temperature sensor; 606. Compression spring; 607. Cleaning assembly; 6071. Wind sensor ring; 6072. Scraper; 6073. Slider; 608. Groove; 7. Vacuum pump; 8. Pressure regulating valve; 9. Safety valve; 10. Plunger pump; 11. Cryogenic pump. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-3 An embodiment of this utility model is provided: an auxiliary device for filling a carbon dioxide storage tank, including multiple flanges 1, multiple screws 3 are fixedly connected to the outer walls of the multiple flanges 1, and nuts 2 are threadedly connected to the outer walls of the multiple screws 3. The main function of the nuts 2 is to fix the flanges 1 in conjunction with the screws 3. The outer walls of the multiple flanges 1 are connected to pipes 5, the inner walls of the multiple pipes 5 are provided with sealing mechanisms 4, and the outer walls of the multiple flanges 1 are provided with anti-condensation mechanisms 6. The anti-condensation mechanism 6 includes multiple fixed columns 601, whose main function is to fix various components. The outer walls of the multiple fixed columns 601 are fixedly connected to the inner wall of the pipe 5. Two support columns 602 are fixedly connected to the inner walls of the multiple fixed columns 601. Heating wires 604 are fixedly connected to the outer walls of the multiple fixed columns 601, whose main function is to heat the pipe 5. Temperature sensors 605 are fixedly connected to the inner walls of the multiple fixed columns 601, whose main function is to monitor the temperature of the phase change section. Compression springs 606 are fixedly connected to the outer walls of the multiple fixed columns 601, whose main function is to drive the movement of the wind-sensing ring 6071. Multiple grooves 608 are opened on the inner walls of the multiple pipes 5, whose main function is to limit the extension and contraction direction of the compression springs 606. The inner walls of the multiple support columns 602 are provided with flow guiding components 603, which include multiple rotating shafts 6031. The outer walls are all fixedly connected to the outer walls of the two support columns 602. The outer walls of the multiple rotating shafts 6031 are rotatably connected to rotating rings 6032. The outer walls of the multiple rotating rings 6032 are all fixedly connected to multiple guide vanes 6033. Their main function is to guide carbon dioxide to spiral motion through rotation, increase flow rate, and prevent dry ice from forming in local low-temperature areas. The outer walls of the multiple compression springs 606 are all provided with cleaning components 607. The cleaning components 607 include multiple wind-sensing rings 6071. Their main function is to drive the scraper 6072 to move through carbon dioxide. The outer walls of the multiple wind-sensing rings 6071 are all fixedly connected to the outer walls of the compression springs 606. The outer walls of the multiple wind-sensing rings 6071 are all fixedly connected to scraper 6072. Their main function is to clean dry ice. The outer walls of the multiple scraper 6072 are all fixedly connected to multiple sliders 6073. Their main function is to limit the movement track of the scraper 6072. Specifically, a heating wire 604 and two support columns 602 are fixed by a fixed column 601. When the temperature sensor 605 on the inner wall of the fixed column 601 detects that the temperature of the phase change part is close to the freezing point of dry ice, it controls the heating wire 604 to heat up to prevent carbon dioxide from solidifying into dry ice. At the same time, a rotating shaft 6031 is fixed by the two support columns 602. When carbon dioxide starts to be transported, the guide vanes 6033 on the rotating ring 6032 guide the carbon dioxide to move in a spiral motion, increase the flow rate, and avoid the formation of dry ice in local low temperature areas. A compression spring 606, which is initially in a compressed state, is fixed on the outer wall of the fixed column 601. When the carbon dioxide starts to be transported, the wind-sensing ring 6071 moves along the groove 608, which drives the scraper 6072 to move. The movement track is restricted by the slider 6073. When the compression spring 606 is reset, the scraper 6072 moves to clean the dry ice.

[0028] Reference Figures 2-4The sealing mechanism 4 includes multiple expanded graphite 401s, each of which is fixedly connected to the outer wall of the flange 1. Each of the multiple expanded graphite 401s has a rubber ring 402 fixedly connected to its outer wall, and each of the multiple rubber rings 402 has a stainless steel mesh 403 fixedly connected to its outer wall. The sealing mechanism 4 also includes multiple disc springs 404s, each of which has its outer wall fixedly connected to the outer wall of the screw 3. Each of the multiple disc springs 404 has two elastic gaskets 405 fixedly connected to its outer wall. Each of the multiple flanges 1 has a filler ring 406 fixedly connected to its inner wall, and each of the multiple flanges 1 has a sealing ring 407 fixedly connected to its outer wall. Specifically, multiple sealing components are fixed between the two flanges 1. The outer layer of expanded graphite 401 deforms with temperature difference to compensate for the gap, the middle layer of rubber ring 402 provides sealing, and the inner layer of stainless steel mesh 403 enhances the overall crush resistance of the gasket and fills the connection gap of flange 1. At the same time, multiple disc springs 404 and elastic ring gaskets 405 are fixed on the screws 3 to absorb deformation and achieve sealing. The connection gap of screws 3 is sealed by the filler ring 406, and the edge of the gasket is sealed by the sealing ring 407.

[0029] Reference Figures 3-5 Vacuum pump 7 is connected to the outer wall of pipe 5, pressure regulating valve 8 is connected to the outer wall of pipe 5, safety valve 9 is connected to the outer wall of pipe 5, plunger pump 10 is connected to the outer wall of pipe 5, cryogenic pump 11 is connected to the outer wall of front flange 1, and the outer walls of multiple heating wires 604 are fixedly connected to the inner wall of pipe 5. Specifically, the vacuum pump 7 is used to evacuate the storage tank to a vacuum to improve the purity of carbon dioxide. The pressure regulating valve 8 is used to precisely control the filling pressure to ensure the stability of the pressure inside the storage tank. The safety valve 9 prevents overpressure explosion. The plunger pump 10 extracts liquid carbon dioxide from the storage tank and the cryogenic pump 11 stably delivers cryogenic carbon dioxide.

[0030] Working principle: First, when carbon dioxide is started to be delivered, the guide vane 6033 guides the carbon dioxide to move in a spiral motion, increasing the flow rate and preventing the formation of dry ice in local low-temperature areas. The guide vane 6033 rotates on the rotating shaft 6031 via the rotating ring 6032. The wind-sensing ring 6071 drives the compression spring 606 to extend and the scraper 6072 to move under the action of carbon dioxide. The scraper 6072 moves along the groove 608 under the restriction of the slider 6073. At the same time, when the temperature sensor 605 on the inner wall of the fixed column 601 detects that the temperature is close to the freezing point of dry ice, the heating wire 604 is activated to raise the temperature and prevent the carbon dioxide from solidifying into dry ice. When the carbon dioxide is stopped being delivered, the compression spring 606 resets and drives the scraper 6072 to move and clean up the dry ice, preventing the carbon dioxide from turning into dry ice while cleaning up any dry ice that may have been accidentally generated. Furthermore, the flange 1 is fixed with a multiple sealing structure. The outer layer of expanded graphite 401 deforms with temperature difference to compensate for the gap, the middle layer of rubber ring 402 seals, and the inner layer of stainless steel mesh 403 enhances the overall crush resistance of the gasket and fills the connection gap of flange 1. At the same time, the deformation is absorbed by the disc spring 404 and the elastic ring gasket 405 to achieve sealing. The connection gap between the screw 3 and flange 1 is sealed by the filler ring 406, and the sealing ring 407 seals the edge of the gasket and flange 1, so as to achieve good sealing of flange 1 when the temperature changes.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for filling carbon dioxide storage tanks, comprising a plurality of flanges (1), characterized in that: Multiple bolts (3) are fixedly connected to the outer walls of multiple flanges (1), and nuts (2) are threadedly connected to the outer walls of multiple bolts (3). Pipes (5) are connected to the outer walls of multiple flanges (1). Sealing mechanisms (4) are provided on the inner walls of multiple pipes (5). Condensation-preventing mechanisms (6) are provided on the outer walls of multiple flanges (1). The anti-condensation mechanism (6) includes multiple fixed columns (601), the outer walls of the multiple fixed columns (601) are fixedly connected to the inner wall of the pipe (5), the inner walls of the multiple fixed columns (601) are fixedly connected to two support columns (602), the outer walls of the multiple fixed columns (601) are fixedly connected to heating wires (604), the inner walls of the multiple fixed columns (601) are fixedly connected to temperature sensors (605), the outer walls of the multiple fixed columns (601) are fixedly connected to compression springs (606), the inner walls of the multiple pipes (5) are provided with multiple grooves (608), the inner walls of the multiple support columns (602) are provided with flow guiding components (603), and the outer walls of the multiple compression springs (606) are provided with cleaning components (607).

2. A device for assisting the filling of a carbon dioxide storage tank as claimed in claim 1, characterized in that: The sealing mechanism (4) includes multiple expanded graphite (401), each of the multiple expanded graphite (401) is fixedly connected to the outer wall of the flange (1), each of the multiple expanded graphite (401) is fixedly connected to a rubber ring (402), and each of the multiple rubber rings (402) is fixedly connected to a stainless steel mesh (403).

3. A device for assisting the filling of a carbon dioxide tank according to claim 1, characterized in that: The sealing mechanism (4) also includes multiple disc springs (404), the outer walls of the multiple disc springs (404) are fixedly connected to the outer wall of the screw (3), the outer walls of the multiple disc springs (404) are fixedly connected to two elastic gaskets (405), the inner walls of the multiple flanges (1) are fixedly connected to a filler ring (406), and the outer walls of the multiple flanges (1) are fixedly connected to a sealing ring (407).

4. The auxiliary device for filling a carbon dioxide storage tank according to claim 1, characterized in that: The flow guiding assembly (603) includes multiple rotating shafts (6031), the outer walls of the multiple rotating shafts (6031) are fixedly connected to the outer walls of two support columns (602), the outer walls of the multiple rotating shafts (6031) are rotatably connected to rotating rings (6032), and the outer walls of the multiple rotating rings (6032) are fixedly connected to multiple flow guiding blades (6033).

5. The auxiliary device for filling a carbon dioxide storage tank according to claim 1, characterized in that: The cleaning assembly (607) includes multiple air-sensing rings (6071), the outer walls of which are fixedly connected to the outer wall of a compression spring (606), and scraper blades (6072) are fixedly connected to the outer walls of which ...

6. The auxiliary device for filling a carbon dioxide storage tank according to claim 1, characterized in that: The outer wall of the pipe (5) is connected to a vacuum pump (7), and the outer wall of the pipe (5) is connected to a pressure regulating valve (8).

7. The auxiliary device for filling a carbon dioxide storage tank according to claim 1, characterized in that: The outer wall of the pipe (5) is connected to a safety valve (9), and the outer wall of the pipe (5) is connected to a plunger pump (10).

8. The auxiliary device for filling a carbon dioxide storage tank according to claim 1, characterized in that: The outer wall of the flange (1) on the front side is communicated with a low-temperature pump (11), and the outer wall of the plurality of heating wires (604) is fixedly connected to the inner wall of the pipeline (5).

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