Spray cooling system of hazardous gas storage tank

Abstract

The invention discloses a hazardous gas storage tank spray cooling system which comprises a storage tank, a spray mechanism and a cleaning mechanism, the spray mechanism is arranged on the peripheral side of the storage tank, and the spray mechanism is used for spraying cooling water to the storage tank; the cleaning mechanism comprises a scraping and washing assembly and a first driving assembly, the scraping and washing assembly abuts against the storage tank, the fixed end of the first driving assembly is connected to the storage tank, and the movable end of the first driving assembly is connected to the scraping and washing assembly so as to drive the scraping and washing assembly to move relative to the storage tank. The storage tank has the beneficial effects that dust and incrustation accumulated on the outer wall of the storage tank are scraped in time through the cleaning mechanism, hindering factors of heat conduction are eliminated, heat of hazardous gas in the storage tank can be transmitted into external cooling water more smoothly, and the cooling effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of chemical production, and in particular to a spray cooling system for hazardous gas storage tanks. Background Art

[0002] Hazardous gases, such as liquefied petroleum gas (LPG), ammonia, and chlorine, are flammable, explosive, toxic, and harmful. During storage, rising ambient temperatures or chemical reactions within the tanks can cause a sharp rise in temperature and pressure. When these temperatures and pressures exceed the tank's design tolerances, they can cause the tank to deform or rupture, potentially leading to leaks of hazardous gases.

[0003] The Chinese utility model with announcement number CN205670248U proposes a butadiene tank area security system, including a fluid loading and unloading arm, a butadiene storage tank, a compressor, a magnetic flap level gauge, a control switch whose control output is connected to the power supply of the compressor, a liquid level transmitter, a sunshade arranged above the butadiene storage tank, a spray device, a water pump connected to the spray device, a remote temperature sensor arranged on the butadiene storage tank, a temperature controller, a remote display connected to both the liquid level transmitter and the remote temperature sensor, a pressure relief valve arranged at the upper end opening of the butadiene storage tank, an explosion-proof membrane arranged at the flange connection between the butadiene storage tank and the pressure relief valve, and a combustible gas alarm device arranged in the butadiene tank area.

[0004] Regarding the above-mentioned related technologies, the following defects exist: the storage tank is exposed to the outdoors for a long time, and dust and scale are easily accumulated on the outer wall of the storage tank, which seriously affects the heat conduction between the inside of the storage tank and the external cooling water, resulting in low cooling efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a spray cooling system for hazardous gas storage tanks to solve the technical problem in the prior art that dust and scale on the outer wall of the storage tank affect the cooling efficiency.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a hazardous gas storage tank spray cooling system, including a storage tank; a spray mechanism, the spray mechanism being provided on the peripheral side of the storage tank and being used for spraying cooling water toward the storage tank; and The cleaning mechanism includes a scraping assembly and a first driving assembly. The scraping assembly abuts against the storage tank, the fixed end of the first driving assembly is connected to the storage tank, and the movable end of the first driving assembly is connected to the scraping assembly to drive the scraping assembly to move relative to the storage tank.

[0007] In some embodiments, the first drive assembly includes a screw and a first motor, the first motor is mounted on the storage tank, the screw is rotatably connected to the storage tank, the screw extends axially along the storage tank, the output shaft of the first motor is connected to the screw, the screw passes through the scraping assembly and is threadedly connected to the scraping assembly.

[0008] In some embodiments, the scraping assembly includes a scraper body, a plate body and a second drive assembly, the plate body is connected to the storage tank along the axial sliding direction of the storage tank, the screw rod passes through the plate body and is threadedly connected to the plate body, the scraper body is connected to the plate body along the radial direction of the plate body and coaxially rotates, the scraper body abuts against the storage tank, the fixed end of the second drive assembly is connected to the plate body, and the movable end of the second drive assembly is connected to the scraper body.

[0009] In some embodiments, the second drive assembly includes a second motor, a driving gear and a driven rack, the second motor is mounted on the plate, the driving gear is connected to the output shaft of the second motor, the driven rack is connected to the scraper body, and the driving gear is meshed with the driven rack.

[0010] In some embodiments, the spraying mechanism includes a water tank, a first water pipe, a water pump, a valve and a nozzle. The outlet of the water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the valve, the outlet of the valve is connected to the inlet of the first water pipe, the outlet of the first water pipe is connected to the inlet of the nozzle, and the outlet of the nozzle faces the storage tank.

[0011] In some embodiments, the cooling system also includes a circulation mechanism, which includes a recovery pool, a recovery trough and a second water pipe. The storage tank is installed in the recovery pool, the recovery pool is inclined, and the recovery trough is arranged on the lower side of the recovery pool. The outlet of the recovery trough is connected to the inlet of the second water pipe, and the outlet of the second water pipe is connected to the inlet of the water tank.

[0012] In some embodiments, the circulation mechanism further includes a guide groove, which is provided in the recovery tank, the guide groove is located below the storage tank, the guide groove extends axially along the storage tank, and the outlet of the guide groove is connected to the inlet of the recovery tank.

[0013] In some embodiments, the circulation mechanism further includes a filter plate connected to the inlet of the second water pipe.

[0014] In some embodiments, the circulation mechanism also includes a support rod, an impeller, a brush and an ash collecting trough. The support rod is fixedly connected to the filter plate, the impeller is rotatably connected to the support rod, the impeller is axially slidably connected to the support rod, the brush is connected to the side of the impeller facing the filter screen, and the ash collecting trough is located on the peripheral side of the filter screen.

[0015] In some embodiments, the circulation mechanism further includes a buoyancy cover, which is slidably connected to the support rod along the axial direction of the support rod, and the buoyancy cover is located above the impeller.

[0016] Compared with the prior art, the beneficial effects of the present invention include: timely scraping away dust and scale accumulated on the outer wall of the storage tank through the cleaning mechanism, eliminating obstacles to heat conduction, allowing the heat of the hazardous gas inside the storage tank to be more smoothly transferred to the external cooling water, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the spray cooling system provided by the present invention; Figure 2 The present invention provides Figure 1 A magnified view of the local structure at point A; Figure 3 The present invention provides Figure 1 A magnified view of the local structure at point B in the middle; Figure 4 The present invention provides Figure 1 A magnified view of the local structure at point C in the middle.

[0018] Description of reference numerals: 1. Storage tank; 2. Spraying mechanism; 21. Water tank; 22. First water pipe; 23. Water pump; 24. Valve; 25. Nozzle; 3. Cleaning mechanism; 31. Scraping assembly; 311. Scraping body; 312. Plate body; 313. Second drive assembly; 3131. Second motor; 3132. Driving gear; 3133. Driven rack; 32. First drive assembly; 321. Screw; 322. First motor; 4. Circulation mechanism; 41. Recovery tank; 42. Recovery trough; 43. Second water pipe; 44. Diversion trough; 45. Filter plate; 46. Support rod; 47. Impeller; 48. Brush; 49. Ash collecting trough; 5. Buoyancy cover. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The present invention provides a spray cooling system for hazardous gas storage tanks, the structure of which is as follows: Figure 1 - Figure 4 As shown, it includes a storage tank 1, a spraying mechanism 2 and a cleaning mechanism 3.

[0021] The spray mechanism 2 is provided on the peripheral side of the storage tank 1 , and is used for spraying cooling water toward the storage tank 1 .

[0022] The cleaning mechanism 3 includes a scraping assembly 31 and a first driving assembly 32. The scraping assembly 31 abuts against the storage tank 1. The fixed end of the first driving assembly 32 is connected to the storage tank 1. The movable end of the first driving assembly 32 is connected to the scraping assembly 31 to drive the scraping assembly 31 to move relative to the storage tank 1.

[0023] During use, when the outer wall of the storage tank 1 needs to be cleaned, the first drive assembly 32 starts working. After the first drive assembly 32 is started, the movable end starts to move, driving the scraping assembly 31 to slide along the axial direction of the storage tank 1. Driven by the movable end of the first drive assembly 32, the scraping assembly 31 slides along the outer wall of the storage tank 1. Since the scraping assembly 31 is in close contact with the outer wall of the storage tank 1, the scraping assembly 31 can scrape off the dust and scale accumulated on the outer wall of the storage tank 1 during the sliding process. During the cleaning process, the spray mechanism 2 continues to work, and the sprayed cooling water continues to cool the storage tank 1 on the one hand, and on the other hand, it can wash away the dust and scale scraped off by the scraping assembly 31 to prevent it from adhering to the outer wall of the storage tank 1 again.

[0024] In the present invention, the dust and scale accumulated on the outer wall of the storage tank 1 are scraped off in time by the cleaning mechanism 3, thereby eliminating the obstacles to heat conduction, so that the heat of the dangerous gas inside the storage tank 1 can be more smoothly transferred to the external cooling water, thereby improving the cooling effect.

[0025] In order to drive the scraping assembly 31 to slide back and forth, please refer to Figure 2 In a preferred embodiment, the first driving component 32 includes a screw rod 321 and a first motor 322. The first motor 322 is installed on the storage tank 1. The screw rod 321 is rotatably connected to the storage tank 1. The screw rod 321 extends along the axial direction of the storage tank 1. The output shaft of the first motor 322 is connected to the screw rod 321. The screw rod 321 passes through the scraping and washing component 31 and is threadedly connected to the scraping and washing component 31.

[0026] During use, the output shaft of the first motor 322 is connected to the screw rod 321. When the output shaft of the first motor 322 rotates, it drives the screw rod 321 to rotate around its own axis. When the screw rod 321 rotates, the scraping assembly 31 moves linearly along the axial direction of the screw rod 321, so that it can clean different areas of the outer wall of the storage tank 1.

[0027] To improve cleaning performance, please refer to Figure 3In a preferred embodiment, the scraping assembly 31 includes a scraping body 311, a plate body 312 and a second driving assembly 313. The plate body 312 is connected to the storage tank 1 along the axial sliding of the storage tank 1. The screw rod 321 passes through the plate body 312 and is threadedly connected to the plate body 312. The scraping body 311 is connected to the plate body 312 by coaxial rotation along the radial direction of the plate body 312. The scraping body 311 abuts against the storage tank 1. The fixed end of the second driving assembly 313 is connected to the plate body 312, and the movable end of the second driving assembly 313 is connected to the scraping body 311.

[0028] During operation, the first motor 322 is activated, driving the screw 321 to rotate. The rotation of the screw 321 causes the plate 312 to move linearly along the axial direction of the storage tank 1. When the second drive assembly 313 is activated, its movable end begins to move, driving the scraper 311 to rotate coaxially along the radial direction of the plate 312. While the plate 312 moves axially along the storage tank 1, the scraper 311 rotates in a circular motion. These two motions work together to enable the scraper 311 to thoroughly clean the outer wall of the storage tank 1.

[0029] In order to drive the scraper 311 to rotate along the radial direction of the tank 1, please refer to Figure 3 In a preferred embodiment, the second driving assembly 313 includes a second motor 3131, a driving gear 3132 and a driven rack 3133. The second motor 3131 is mounted on the plate body 312, the driving gear 3132 is connected to the output shaft of the second motor 3131, the driven rack 3133 is connected to the scraper body 311, and the driving gear 3132 is meshed with the driven rack 3133.

[0030] During use, the driving gear 3132 is connected to the output shaft of the second motor 3131. As the output shaft of the second motor 3131 rotates, the driving gear 3132 also performs circular motion around its own axis. The driven rack 3133 is connected to the scraper body 311, and the driving gear 3132 and the driven rack 3133 engage with each other. When the driving gear 3132 rotates, it generates an interaction force with the driven rack 3133, converting the circular motion of the driving gear 3132 into the circular motion of the driven rack 3133. Since the driven rack 3133 is connected to the scraper body 311, and the scraper body 311 rotates coaxially along the radial direction of the plate body 312 and is connected to the plate body 312, the movement of the driven rack 3133 drives the scraper body 311 to perform circular rotation around the radial direction of the plate body 312. During the rotation, the scraper 311 can clean the outer wall of the storage tank 1 at the abutment position in the circumferential direction, and scrape off the dust and scale accumulated at the position.

[0031] To spray and cool down the tank 1, please refer to Figure 1In a preferred embodiment, the spraying mechanism 2 includes a water tank 21, a first water pipe 22, a water pump 23, a valve 24 and a nozzle 25. The outlet of the water tank 21 is connected to the inlet of the water pump 23, the outlet of the water pump 23 is connected to the inlet of the valve 24, the outlet of the valve 24 is connected to the inlet of the first water pipe 22, the outlet of the first water pipe 22 is connected to the inlet of the nozzle 25, and the outlet of the nozzle 25 is toward the storage tank 1.

[0032] When in use, the water tank 21 is used to store the cooling water required for spraying. When the spraying system is started, the water pump 23 starts working. The water pressurized by the water pump 23 flows out from the outlet of the water pump 23 and enters the valve 24. When the valve 24 is open, the water flow can pass through the valve 24 smoothly; when the valve 24 is closed, the water flow is cut off and cannot continue to flow. The size of the water flow can also be controlled by adjusting the opening of the valve 24 to meet the demand for spray water volume under different working conditions. The water flowing out of the valve 24 enters the first water pipe 22. The water reaches the nozzle 25 through the first water pipe 22. The outlet of the nozzle 25 is facing the storage tank 1, so that it is evenly sprayed on the surface of the storage tank 1. The cooling water sprayed on the surface of the storage tank 1 absorbs the heat transferred from the storage tank 1, thereby achieving the purpose of lowering the temperature of the storage tank 1.

[0033] To improve the utilization rate of cooling water, please refer to Figure 1 In a preferred embodiment, the cooling system further includes a circulation mechanism 4, which includes a recovery pool 41, a recovery trough 42 and a second water pipe 43. The storage tank 1 is installed in the recovery pool 41, and the recovery pool 41 is inclined. The recovery trough 42 is arranged on the lower side of the recovery pool 41, and the outlet of the recovery trough 42 is connected to the inlet of the second water pipe 43, and the outlet of the second water pipe 43 is connected to the inlet of the water tank 21.

[0034] During use, the storage tank 1 is installed in the recovery tank 41. When the spray mechanism 2 sprays cooling water into the storage tank 1, the cooling water will flow down the outer wall of the storage tank 1 and drip into the recovery tank 41. Because the recovery tank 41 is tilted, the water will naturally flow to the lower side of the recovery tank 41 under the action of gravity. This allows the water flow to converge into the recovery tank 42. The outlet of the recovery tank 42 is connected to the inlet of the second water pipe 43. Under the action of gravity, the cooling water in the recovery tank 42 flows into the second water pipe 43. The second water pipe 43 transports the cooling water back to the inlet of the water tank 21, so that the cooling water returns to the water tank 21.

[0035] To improve recycling efficiency, please refer to Figure 1In a preferred embodiment, the circulation mechanism 4 also includes a guide groove 44, which is arranged in the recovery pool 41. The guide groove 44 is located below the storage tank 1. The guide groove 44 extends axially along the storage tank 1, and the outlet of the guide groove 44 is connected to the inlet of the recovery tank 42.

[0036] During use, the guide trough 44 is disposed within the recovery pool 41 and below the storage tank 1, extending axially along the storage tank 1. When the spray cooling water flows down from the surface of the storage tank 1, a portion of the water will fall directly into the guide trough 44 below the storage tank 1, rather than being dispersed around the bottom of the storage tank 1. The outlet of the guide trough 44 is connected to the inlet of the recovery trough 42. Under the action of gravity, the cooling water gathered in the guide trough 44 flows smoothly from the outlet of the guide trough 44 into the recovery trough 42. This allows the cooling water below the storage tank 1 to be more efficiently collected in the recovery trough 42.

[0037] To improve the cleanliness of cooling water, please refer to Figure 4 In a preferred embodiment, the circulation mechanism 4 further includes a filter plate 45 , and the filter plate 45 is connected to the inlet of the second water pipe 43 .

[0038] During use, as the cooling water in the recovery tank 42 flows toward the second water pipe 43, it first passes through the filter plate 45. The filter plate 45 has numerous tiny pores that trap solid impurities in the water, preventing them from passing through the filter plate 45 and entering the second water pipe 43. This maintains the cleanliness of the cooling water and prevents impurities from causing wear and clogging on components such as the water pump 23, valve 24, and nozzle 25 during circulation.

[0039] To reduce the possibility of filter plate 45 being blocked, please refer to Figure 4 In a preferred embodiment, the circulation mechanism 4 further includes a support rod 46, an impeller 47, a brush 48 and an ash collecting trough 49. The support rod 46 is fixedly connected to the filter plate 45, the impeller 47 is rotatably connected to the support rod 46, the impeller 47 is slidably connected to the support rod 46 along the axial direction of the support rod 46, the brush 48 is connected to the side of the impeller 47 facing the filter screen, and the ash collecting trough 49 is located on the peripheral side of the filter screen.

[0040] During operation, when cooling water from recovery tank 42 flows through filter plate 45 and into second water pipe 43, the water flow exerts an impact force on impeller 47. This force causes impeller 47 to begin rotating about the axis of support rod 46. As impeller 47 rotates, brush 48 also rotates, cleaning the surface of filter plate 45. Impurities removed from filter plate 45 by brush 48 fall into ash collection trough 49 due to the impact of the water flow and its own gravity. Ash collection trough 49 can be cleaned regularly to remove accumulated impurities, prevent them from re-introducing into the cooling water, and ensure the cleanliness of the circulating water.

[0041] To further reduce the possibility of filter plate 45 being blocked, please refer to Figure 4 In a preferred embodiment, the circulation mechanism 4 further includes a buoyancy cover 5 , which is slidably connected to the support rod 46 along the axial direction of the support rod 46 , and the buoyancy cover 5 is located above the impeller 47 .

[0042] During use, when cooling water is recovered, the buoyancy of the cooling water causes the buoyancy cover 5 to rise, allowing the impeller 47 and the brush 48 to rotate normally. When the storage tank 1 does not need to be cooled, the buoyancy cover 5 covers the filter plate 45 under its own gravity, reducing the possibility of dust entering the filter plate 45.

[0043] In order to better understand the present invention, the following Figure 1 - Figure 4 The working principle of the spray cooling system for a hazardous gas storage tank 1 according to the technical solution of the present invention is described in detail: when the outer wall of the storage tank 1 needs to be cleaned, the first drive component 32 starts to work. After the first drive component 32 is started, the movable end starts to move, driving the scraping component 31 to slide along the axial direction of the storage tank 1. Driven by the movable end of the first drive component 32, the scraping component 31 slides along the outer wall of the storage tank 1. Since the scraping component 31 is in close contact with the outer wall of the storage tank 1, the scraping component 31 can scrape off the dust and scale accumulated on the outer wall of the storage tank 1 during the sliding process. During the cleaning process, the spray mechanism 2 continues to work, and the sprayed cooling water continues to cool the storage tank 1 on the one hand, and on the other hand, it can wash away the dust and scale scraped off by the scraping component 31 to prevent it from adhering to the outer wall of the storage tank 1 again.

[0044] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A spray cooling system for hazardous gas storage tanks, characterized in that: include: Storage tanks; A spray mechanism, the spray mechanism being arranged on the peripheral side of the storage tank and being used for spraying cooling water toward the storage tank; as well as, The cleaning mechanism includes a scraping assembly and a first driving assembly. The scraping assembly abuts against the storage tank, the fixed end of the first driving assembly is connected to the storage tank, and the movable end of the first driving assembly is connected to the scraping assembly to drive the scraping assembly to move relative to the storage tank.

2. The hazardous gas storage tank spray cooling system according to claim 1, characterized in that: The first driving assembly includes a screw and a first motor. The first motor is installed on the storage tank. The screw is rotatably connected to the storage tank and extends axially along the storage tank. The output shaft of the first motor is connected to the screw. The screw passes through the scraping and washing assembly and is threadedly connected to the scraping and washing assembly.

3. The hazardous gas storage tank spray cooling system according to claim 2, characterized in that: The scraping assembly includes a scraper body, a plate body and a second driving assembly. The plate body is connected to the storage tank by sliding along the axial direction of the storage tank. The screw rod passes through the plate body and is threadedly connected to the plate body. The scraper body is connected to the plate body by coaxial rotation along the radial direction of the plate body. The scraper body abuts against the storage tank. The fixed end of the second driving assembly is connected to the plate body, and the movable end of the second driving assembly is connected to the scraper body.

4. The hazardous gas storage tank spray cooling system according to claim 3, characterized in that: The second driving assembly includes a second motor, a driving gear and a driven rack. The second motor is mounted on the plate body. The driving gear is connected to the output shaft of the second motor. The driven rack is connected to the scraper body. The driving gear is meshed with the driven rack.

5. The hazardous gas storage tank spray cooling system according to claim 1, characterized in that: The spray mechanism includes a water tank, a first water pipe, a water pump, a valve and a nozzle. The outlet of the water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the valve, the outlet of the valve is connected to the inlet of the first water pipe, the outlet of the first water pipe is connected to the inlet of the nozzle, and the outlet of the nozzle faces the storage tank.

6. The hazardous gas storage tank spray cooling system according to claim 5, characterized in that: The cooling system also includes a circulation mechanism, which includes a recovery pool, a recovery trough and a second water pipe. The storage tank is installed in the recovery pool, the recovery pool is arranged at an angle, and the recovery trough is arranged on the lower side of the recovery pool. The outlet of the recovery trough is connected to the inlet of the second water pipe, and the outlet of the second water pipe is connected to the inlet of the water tank.

7. The hazardous gas storage tank spray cooling system according to claim 6, characterized in that: The circulation mechanism further includes a guide groove, which is provided in the recovery tank and located below the storage tank. The guide groove extends along the axial direction of the storage tank, and the outlet of the guide groove is connected to the inlet of the recovery tank.

8. The hazardous gas storage tank spray cooling system according to claim 6, characterized in that: The circulation mechanism further comprises a filter plate, and the filter plate is connected to the inlet of the second water pipe.

9. The hazardous gas storage tank spray cooling system according to claim 8, characterized in that: The circulation mechanism also includes a support rod, an impeller, a brush and an ash collecting trough. The support rod is fixedly connected to the filter plate, the impeller is rotatably connected to the support rod, the impeller is slidably connected to the support rod along the axial direction of the support rod, the brush is connected to the side of the impeller facing the filter screen, and the ash collecting trough is located on the peripheral side of the filter screen.

10. The hazardous gas storage tank spray cooling system according to claim 9, characterized in that: The circulation mechanism further comprises a buoyancy cover, which is slidably connected to the support rod along the axial direction of the support rod, and the buoyancy cover is located above the impeller.

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