A liquid chemical storage tank

Abstract

This invention provides a liquid chemical storage tank, belonging to the field of storage tank technology. It includes an outer tank, an inner tank, and a leak detection device. The leak detection device is fixed to the outer wall of the outer tank, which is fitted over the inner tank, forming a pressure layer between them. This pressure layer is filled with gas, and the gas pressure within the pressure layer is greater than the external gas pressure. The leak detection device includes a pressure sensor used to monitor changes in the gas pressure within the pressure layer. This invention enables the monitoring of damage to the walls of a double-walled storage tank, providing real-time monitoring and timely warnings of leaks of liquid chemicals.

Description

Technical Field

[0001] This utility model belongs to the field of storage tank technology, and in particular relates to a liquid chemical storage tank. Background Technology

[0002] Liquid chemicals, such as petroleum, are mostly stored in tanks. Previously, these tanks were often single-walled. Since most liquid chemicals are corrosive, even with anti-corrosion treatment, tank walls could still break. Once a tank wall breaks, liquid chemicals leak, causing significant economic losses and environmental pollution. Modern storage tanks are gradually transitioning from single-walled to double-walled tanks. Double-walled tanks offer significantly improved corrosion resistance compared to single-walled tanks, preventing liquid chemicals from seeping into and contaminating the surrounding soil.

[0003] Although double-walled tanks have high corrosion resistance, due to their physical structure, if only the inner or outer tank is damaged, liquid chemicals will not leak. This makes it difficult for staff to detect the damage in time and provide timely warnings, which can easily lead to safety hazards. Utility Model Content

[0004] In view of the defects or deficiencies in the existing technology, this utility model provides a liquid chemical storage tank that can monitor the damage to the tank wall of the double-walled storage tank and provide real-time monitoring and timely early warning of leakage of liquid chemicals.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An embodiment of this utility model provides a liquid chemical storage tank, including an outer tank, an inner tank, and a leak detection device. The leak detection device is fixed on the outer wall of the outer tank. The outer tank is sleeved on the outside of the inner tank, and a pressure layer is formed between the outer tank and the inner tank. The pressure layer is filled with gas, and the gas pressure inside the pressure layer is greater than the external gas pressure. The leak detection device includes a pressure sensor, which is used to monitor changes in gas pressure within the pressure layer.

[0006] Furthermore, the pressure layer is a sealed cavity with a constant internal pressure, which facilitates the monitoring of the pressure layer pressure by the pressure sensor.

[0007] Furthermore, both the outer and inner tanks are spherical, and both the outer and inner tanks have openings at the top.

[0008] Furthermore, the fixing plate is adapted to the openings at the top of the outer and inner tanks.

[0009] Furthermore, the fixing plate connects and seals the openings at the top of the outer tank and the inner tank, thereby fixing the relative positions of the outer tank and the inner tank.

[0010] Furthermore, the bottom of the outer tank is provided with multiple support legs, which are arranged vertically to ensure the stability of the tank body.

[0011] Furthermore, the detection end of the pressure sensor passes through the mounting hole opened on the side wall of the outer tank and extends into the pressure layer.

[0012] Furthermore, the detection end of the pressure sensor is sealed to the mounting hole to ensure that the internal pressure of the pressure layer remains constant.

[0013] Furthermore, the leak detection device also includes a central processing module, a wireless communication module, a positioning module, and an electronic tag module. The wireless communication module, the positioning module, and the electronic tag module are all electrically connected to the central processing module, and can send information data such as the tank location and logistics to the control center, thereby issuing alarm prompts for the degree and location of the leak.

[0014] Furthermore, the leakage detection device also includes an alarm module, which is electrically connected to the central processing module.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model sets up a pressure layer between the outer tank and the inner tank. The gas pressure in the pressure layer is greater than the external gas pressure. The pressure sensor monitors the pressure of the pressure layer in real time. When the outer tank or the inner tank wall is damaged, the pressure sensor can detect the change in gas pressure in the pressure layer, thereby determining that the storage tank wall is damaged. Then, the staff can be notified to take timely remedial measures, thus achieving timely early warning and avoiding the occurrence of safety hazards.

[0016] 2. This invention ensures that the gas pressure within the pressure layer is greater than the external gas pressure. When the outer tank wall or both the inner and outer tank walls rupture, the gas pressure within the pressure layer, being higher than the external pressure, will rapidly overflow until it equalizes with the external pressure. This pressure change is significant and can be easily identified to determine the possibility of a leak. If the inner tank wall ruptures, the gas pressure will also change, albeit slowly. However, because the gas pressure within the pressure layer is constant, this pressure change can still be detected by a pressure sensor. The different pressure changes caused by ruptures in the outer and inner tanks directly indicate whether the rupture is in the outer or inner tank, allowing personnel to formulate appropriate remedial measures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the storage tank in an embodiment of this utility model; Figure 2 This is a structural diagram of the leakage detection device in an embodiment of this utility model; The components include: 1. Outer tank; 2. Inner tank; 3. Fixing plate; 4. Support legs; 5. Pressure layer; and 6. Leak detection device. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] A typical embodiment of this utility model is as follows: Figure 1 As shown, a liquid chemical storage tank includes a tank body and a leak detection device 6. The tank body includes an outer tank 1, an inner tank 2, and a fixing plate 3. The outer tank 1 is fitted outside the inner tank 2. Both the outer tank 1 and the inner tank 2 are spherical. The tops of both the outer tank 1 and the inner tank 2 are open. The fixing plate 3 is adapted to the openings at the tops of the outer tank 1 and the inner tank 2. The fixing plate 3 connects and seals the openings at the tops of the outer tank 1 and the inner tank 2, thereby fixing the relative positions of the outer tank 1 and the inner tank 2.

[0020] The bottom of the outer tank 1 is provided with multiple support legs 4, which are vertically arranged to ensure the stability of the tank.

[0021] A pressure layer 5 is provided between the outer tank 1 and the inner tank 2. The pressure layer 5 is a sealed cavity between the outer tank 1 and the inner tank 2, which is filled with a protective gas with a set pressure. The pressure of the protective gas in the pressure layer 5 is greater than the external gas pressure.

[0022] By setting up an outer tank 1 and an inner tank 2, a double-layer protection mechanism is formed for the storage tank. When the inner tank 2 wall is damaged, the presence of the outer tank 1 can prevent chemicals from leaking out of the tank. When the outer tank 1 wall is damaged, the presence of the inner tank 2 will also prevent chemicals from leaking. The probability of both the inner tank 2 and the outer tank 1 being damaged at the same time is extremely low, which greatly reduces the possibility of chemical leakage.

[0023] Leakage detection device 6 is fixed on the outer wall of outer tank 1 and includes a pressure sensor and a central processing module. The central processing module is a programmable controller and is electrically connected to the pressure sensor. The detection end of the pressure sensor passes through the mounting hole opened on the side wall of outer tank 1 and extends into the pressure layer 5 to monitor the pressure change of the protective gas in the pressure layer 5.

[0024] It is known that the detection end of the air pressure sensor is sealed to the mounting hole to ensure that the air pressure inside the air pressure layer 5 is constant.

[0025] By using a pressure sensor to monitor the air pressure in the pressure layer 5 between the two tank walls, an automatic leak detection function can be achieved. When the outer tank 1 wall or both the inner and outer tank walls are damaged simultaneously, the air pressure in the pressure layer 5 will be greater than the external air pressure, causing gas to rapidly overflow until the pressure equalizes with the external pressure. This gas pressure change is obvious and can be identified to determine the possibility of a leak. If the inner tank 2 wall is damaged, the air pressure will also change, although slowly. However, because the gas pressure within the pressure layer 5 is constant, this pressure change can also be detected by the pressure sensor. The different pressure changes caused by damage to the outer tank 1 and the inner tank 2 can directly indicate whether the damage is to the outer tank 1 or the inner tank 2, allowing personnel to formulate different remedial measures.

[0026] like Figure 2 As shown, the leak detection device 6 also includes a wireless communication module, a positioning module, an electronic tag module, and a storage module. The wireless communication module has a built-in SIM card, enabling it to wirelessly communicate with the control center, which then monitors the storage tanks. The positioning module uses GPS positioning technology to obtain the location information of the storage tanks, allowing staff to pinpoint the exact location of any leaking tanks. The electronic tag module uses RFID technology to store tank and logistics information, enabling staff to develop remedial measures based on this information. The wireless communication module, positioning module, electronic tag module, and storage module are all electrically connected to the central control module.

[0027] The pressure sensor monitors the pressure inside pressure layer 5 in real time. If the storage tank is intact, the pressure in pressure layer 5 remains constant. If the tank wall is damaged, the pressure in pressure layer 5 changes abnormally. The pressure sensor can detect the pressure change in pressure layer 5 and send the signal to the central processing module. The central processing module obtains the tank's location information through the positioning module and the tank information through the RFID reader / writer module. The central processing module first stores the information data in the storage module and then sends the information data to the control center via the wireless communication module through the wireless network. It issues an alarm for the degree and location of the leak. After receiving the leak information, the control center promptly identifies the leak hazard and takes remedial measures.

[0028] The leak detection device 6 also includes an alarm module, which is electrically connected to the central processing module. The alarm module includes an indicator light and a buzzer, which can issue an alarm. When there is no leak in the tank, the indicator light is static green, and when the tank leaks, the indicator light flashes red.

[0029] Furthermore, the leak detection device 6 also includes a power module, which is electrically connected to the central processing module to supply power to the central processing module.

[0030] By setting up a pressure layer 5 between the outer tank 1 and the inner tank 2, the gas pressure inside the pressure layer 5 is greater than the external gas pressure. The pressure of the pressure layer 5 is monitored in real time by a pressure sensor. When the tank wall of the outer tank 1 or the inner tank 2 is damaged, the pressure sensor can detect the change in gas pressure in the pressure layer 5, thereby determining that the tank wall of the storage tank is damaged, and then notifying the staff to take timely remedial measures, so as to achieve timely early warning and avoid the occurrence of safety hazards.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid chemical storage tank characterized by comprising: It includes an outer tank, an inner tank, and a leak detection device. The leak detection device is fixed on the outer wall of the outer tank. The outer tank is fitted over the outer side of the inner tank, and a pressure layer is formed between the outer tank and the inner tank. The pressure layer is filled with gas, and the gas pressure inside the pressure layer is greater than the external gas pressure. The leak detection device includes a pressure sensor, which is used to monitor changes in gas pressure within the pressure layer.

2. A liquid chemical storage tank as claimed in claim 1, wherein, The pressure layer is a sealed cavity with a constant internal pressure.

3. A liquid chemical storage tank as claimed in claim 1, wherein, Both the outer and inner tanks are spherical, and both have openings at the top.

4. A liquid chemical storage tank as claimed in claim 3, wherein, A fixing plate is provided at the top opening of the outer tank and the inner tank, and the fixing plate is adapted to the top opening of the outer tank and the inner tank.

5. A liquid chemical storage tank as claimed in claim 4, wherein, The fixing plate connects and seals the openings at the top of the outer tank and the inner tank.

6. A liquid chemical storage tank as defined in claim 1, wherein The bottom of the outer tank is provided with multiple support legs, which are arranged vertically.

7. A liquid chemical storage tank as claimed in claim 1, wherein, The detection end of the pressure sensor passes through the mounting hole opened on the side wall of the outer tank and extends into the pressure layer.

8. A liquid chemical storage tank as claimed in claim 7, wherein, The detection end of the pressure sensor is sealed to the mounting hole.

9. A liquid chemical storage tank as claimed in claim 1, wherein, The leak detection device also includes a central processing module, a wireless communication module, a positioning module, and an electronic tag module, all of which are electrically connected to the central processing module.

10. A liquid chemical storage tank as defined in claim 1, wherein The leakage detection device also includes an alarm module, which is electrically connected to the central processing module.

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