Inflation leakage detection device for middle interlayer of buried double-layer metal oil storage tank

Abstract

The utility model provides an inflation leakage detection device for a middle interlayer of a buried double-layer metal oil storage tank, and belongs to the technical field of oil tank leakage detection. Comprising a ground, a double-layer oil storage tank is installed at the bottom of the ground, an interlayer is arranged in the middle of an inner cavity of the double-layer oil storage tank, a detection box is installed at the top end of the ground, and three connecting pipes are installed at an output port of the detection box. According to the inflation leakage detection device for the middle interlayer of the buried double-layer metal oil storage tank, the interlayer is filled with nitrogen through the system inflation port, and the internal pressure of the double-layer oil storage tank is detected through the pressure detection port, so that the pressure in the interlayer of the double-layer oil storage tank is conveniently detected to ensure whether leakage occurs or not; the nuts are in threaded connection with the output ports at all ends, so that the connecting pipe is conveniently connected with the detection box; a buckling block is buckled on the surface of an insertion block, a sector block is clamped in an opening groove in the buckling block, and an outer part is pulled through a spring I, so that the connecting pipe and the detection box are firm, and the practicability is relatively high.

Description

Technical Field

[0001] This utility model belongs to the field of oil tank leakage detection technology, specifically relating to a device for detecting leakage in the intermediate interlayer of a buried double-layer metal oil storage tank. Background Technology

[0002] Application No. 201621476976.7 discloses a buried double-walled oil tank that is fixedly connected to a leak detector with bolts to achieve accurate and real-time detection of seepage. The detection layer is a vacuum-type seepage detection layer, and a vacuum valve is installed inside the detection layer to create a pressure difference, resulting in high sensitivity and significantly reducing the probability of liquid seepage into the soil. The outer tank is an explosion-proof fiberglass tank, and the outer side of the outer tank is coated with an anti-seepage coating, which has good corrosion resistance and electrical erosion resistance, thereby extending the life of the oil pipe, reducing the risk of explosion, and reducing maintenance costs. The leak detector is an ultrasonic leak detector, and a waterproof rubber membrane is installed on the outside of the leak detector, allowing for leak detection at any time.

[0003] However, when conducting gas filling leak detection on existing double-walled oil tanks, most of them place the detection device on the outside so that staff can easily observe the readings during filling to determine whether nitrogen leakage has occurred. However, after a long period of use, the connection between the current detection device and the connecting pipe is prone to loosening, which can lead to leakage from the connection of the detection device and affect the detection results. This can cause staff to mistakenly believe that there is a leak inside the oil tank, making it less practical. Utility Model Content

[0004] To address the unavoidable problem of unstable connection of detection devices in the existing technology, this utility model provides a buried double-layer metal oil storage tank interlayer air leakage detection device. It employs connecting pipes combined with tensioning components to achieve a secure connection between the connecting pipes and the detection box. The specific technical solution is as follows: The buried double-layer metal oil storage tank interlayer air leakage detection device is installed on the ground. A double-layer oil storage tank is installed at the bottom of the ground. An interlayer is formed in the middle of the inner cavity of the double-layer oil storage tank. A detection box is installed at the top of the ground. Three connecting pipes are installed at the output port of the detection box. External components are installed on the surface of the connecting pipes. A tensioning component is installed on both sides of each external component. An inner slider is slidably installed on the inner end of each tensioning component. The outer end of the inner slider is detachably connected to the outer surface of the detection box. A spring is installed on the inner end of the inner slider, and the inner end of the spring is welded to the bottom of the inner end of the tensioning component.

[0005] Preferably, the surface of the testing chamber is respectively equipped with a nitrogen supply port, a system charging port, and a pressure detection port. Each of the nitrogen supply port, system charging port, and pressure detection port is equipped with a valve. The inner side of the nitrogen supply port and system charging port extends into the inner end of the testing chamber and is equipped with an exhaust and pressure relief valve. The inner sides of the nitrogen supply port and system charging port are connected and equipped with a solenoid valve. Two pressure switches are installed on the inner wall of the testing chamber. A gas pipe is installed between the nitrogen supply port, system charging port, and the two pressure switches. A check valve is installed on the inner surface of the system charging port, and a pressure sensor is installed on the inner side of the pressure detection port.

[0006] Preferably, the outer surfaces of the nitrogen supply port, system charging port, and pressure detection port are threaded, and a nut is rotatably installed at one end of the connecting pipe. The nut is used in conjunction with the thread, and a sealing ring is installed between the nut and the connecting pipe. The nitrogen supply port, system charging port, and pressure detection port correspond one-to-one with the connecting pipe, and the nitrogen supply port, system charging port, and pressure detection port are sequentially connected to the three connecting pipes.

[0007] Preferably, a buckle is installed on the outer end of the inner slider, and multiple inserts are installed on the surface of the detection box. Each insert corresponds to a buckle. A slot is opened in the middle of the inner wall of each of the four ends of the buckle. A fan block is slidably installed in the middle of the surface of each of the four ends of the insert. The inner end of the fan block extends slidably into the inner cavity of the insert and is equipped with a spring. The fan block cooperates with the slot.

[0008] Preferably, a rotating ring is rotatably installed in the inner cavity of the buckle block, and four arc-shaped grooves are equally spaced at the top of the rotating ring. A protrusion is slidably installed at the inner end of the arc-shaped groove, and a slider is installed at the top of the protrusion. The slider is slidably installed in the slot.

[0009] Preferably, the bottom end of the buckle block is provided with an arc-shaped hole, and the bottom end of the rotating ring is provided with a connecting rod. The connecting rod slides out of the arc-shaped hole and is provided with a lever.

[0010] In addition, the buried double-layer metal oil storage tank intermediate interlayer air leakage detection device provided by the present invention may also have the following additional technical features: an installation wall and an air storage tank are installed at the top of the ground, the detection box is installed on the installation wall, a first connecting pipe is installed between the air storage tank and the pressure detection port, two connecting ports are symmetrically installed at the top of the double-layer oil storage tank, a second connecting pipe is installed between one of the connecting ports and the nitrogen supply port, and a third connecting pipe is installed between the other connecting port and the system air filling port.

[0011] In the above technical solution, the connection port is connected to the interlayer.

[0012] Compared with the prior art, the beneficial effects of this buried double-layer metal oil storage tank interlayer gas filling leakage detection device are as follows: The device fills the interlayer with nitrogen through the system's gas filling port and detects the internal pressure of the double-layer oil storage tank through the pressure detection port, facilitating the detection of pressure within the interlayer to ensure no leakage occurs; the device facilitates connection between the connecting pipe and the detection box by threaded connection of nuts and output ports; and the device ensures a secure connection between the connecting pipe and the output ports of the detection box by fastening the buckle block to the insert block surface, securing the fan block within the buckle block's internal slot, and pulling the outer part with a spring. This design is highly practical. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of the buried double-layer metal oil storage tank interlayer air leakage detection device provided by this utility model;

[0014] Figure 2 A partial cross-sectional view of the detection box of the buried double-layer metal oil storage tank interlayer air leakage detection device provided by this utility model;

[0015] Figure 3 The buried double-walled metal oil storage tank interlayer air leakage detection device provided by this utility model Figure 2 Enlarged view of point A;

[0016] Figure 4 A schematic diagram of the tensioning component structure of the buried double-layer metal oil storage tank intermediate interlayer air leakage detection device provided by this utility model;

[0017] Figure 5 A schematic diagram of the rotating ring structure of the air leakage detection device for the intermediate interlayer of the buried double-layer metal oil storage tank provided by this utility model.

[0018] in, Figures 1 to 5 The reference numerals and component names in the attached drawings are as follows: 1. Ground, 2. Double-layer oil storage tank, 3. Interlayer, 4. Detection box, 5. Connecting pipe, 6. Nitrogen supply port, 7. System charging port, 8. Pressure detection port, 9. External component, 10. Tensioner, 11. Valve, 12. Exhaust and pressure relief valve, 13. Solenoid valve, 14. Pressure sensor, 15. Pressure switch, 16. Gas pipe, 17. Check valve, 18. Nut, 19. Mounting wall, 20. Gas storage tank, 21. Connecting port, 101. Inner slider, 102. Spring one, 103. Buckle block, 104. Insert block, 105. Fan block, 106. Spring two, 107. Rotary ring, 108. Arc groove, 109. Protrusion, 110. Slider, 111. Connecting rod, 112. Toggle block, 181. Sealing ring. Detailed Implementation

[0019] The following are specific implementation cases and appendices. Figure 1-5 The present invention will be further described, but it is not limited to these embodiments. The present invention provides a technical solution: a buried double-layer metal oil storage tank with interlayer air leakage detection device is installed on the ground 1. A double-layer oil storage tank 2 is installed at the bottom of the ground 1. An interlayer 3 is opened in the middle of the inner cavity of the double-layer oil storage tank 2. A detection box 4 is installed at the top of the ground 1. Three connecting pipes 5 are installed at the output port of the detection box 4. An outer part 9 is installed on the surface of the connecting pipe 5. A tensioning part 10 is installed on both sides of the outer part 9. An inner slider 101 is slidably installed on the inner end of the tensioning part 10. The outer end of the inner slider 101 is detachably connected to the outer surface of the detection box 4. A spring 102 is installed on the inner end of the inner slider 101. The inner end of the spring 102 is welded to the bottom of the inner end of the tensioning part 10. The spring 102 causes the inner slider 101 to tighten the tensioning part 10, so that the outer part 9 drives the connecting pipe 5 to be firmly installed with the detection box 4.

[0020] As a preferred embodiment, furthermore, the surface of the testing chamber 4 is respectively equipped with a nitrogen supply port 6, a system charging port 7, and a pressure detection port 8. Each of these ports has a valve 11 installed on its surface, controlling the switch. The inner sides of the nitrogen supply port 6 and the system charging port 7 extend into the inner end of the testing chamber 4 and are each equipped with an exhaust pressure relief valve 12 for easy pressure relief. The inner sides of the nitrogen supply port 6 and the system charging port 7 are connected. It is equipped with a solenoid valve 13, which connects the nitrogen supply port 6 to the system charging port 7 by opening the solenoid valve 13; two pressure switches 15 are installed on the inner wall of the detection box 4, and a gas pipe 16 is installed between the nitrogen supply port 6, the system charging port 7 and the two pressure switches 15 respectively. A check valve 17 is installed on the inner surface of the system charging port 7 to prevent backflow; a pressure sensor 14 is installed on the inner side of the pressure detection port 8 to detect the internal pressure of the interlayer 3.

[0021] As a preferred option, the outer surfaces of the nitrogen supply port 6, the system charging port 7, and the pressure detection port 8 are threaded. A nut 18 is rotatably installed at one end of the connecting pipe 5. The nut 18 is used in conjunction with the thread. A sealing ring 181 is installed between the nut 18 and the connecting pipe 5. The nitrogen supply port 6, the system charging port 7, and the pressure detection port 8 correspond one-to-one with the connecting pipe 5. The nitrogen supply port 6, the system charging port 7, and the pressure detection port 8 are sequentially connected to the three connecting pipes 5.

[0022] As a preferred embodiment, the outer end of the inner slider 101 is further provided with a buckle 103, and the surface of the detection box 4 is provided with multiple inserts 104, which correspond one-to-one with the buckle 103. The four ends of the buckle 103 are provided with slots in the middle of their inner walls. The four ends of the insert 104 are each provided with a fan block 105 slidably installed in the middle of their surfaces. The inner end of the fan block 105 extends slidably into the inner cavity of the insert 104 and is provided with a spring 106. The fan block 105 cooperates with the slots, thereby facilitating the connection between the buckle 103 and the insert 104.

[0023] As a preferred embodiment, the inner cavity of the buckle 103 is rotatably mounted with a rotating ring 107. The top of the rotating ring 107 is provided with four arc-shaped grooves 108 at equal angles. The inner end of the arc-shaped grooves 108 is slidably mounted with a protrusion 109. The top of the protrusion 109 is mounted with a slider 110. The slider 110 is slidably mounted in the slot. By rotating the rotating ring 107, the slider 110 can be easily moved to press the fan block 105, which is convenient for disassembly.

[0024] As a preferred option, the bottom end of the buckle 103 is provided with an arc-shaped hole, and the bottom end of the rotating ring 107 is provided with a connecting rod 111. The connecting rod 111 slides out of the arc-shaped hole and is provided with a lever 112. The rotating ring 107 can be rotated by sliding the lever 112.

[0025] As a preferred option, further, an installation wall 19 and a gas storage tank 20 are installed at the top of the ground 1. The detection box 4 is installed on the installation wall 19. A first connecting pipe 5 is installed between the gas storage tank 20 and the pressure detection port 8. Two connecting ports 21 are symmetrically installed at the top of the double-layer oil storage tank 2. A second connecting pipe 5 is installed between one connecting port 21 and the nitrogen supply port 6, and a third connecting pipe 5 is installed between the other connecting port 21 and the system charging port 7. The connecting ports 21 are connected to the interlayer 3. The nitrogen in the interlayer 3 is detected by the pressure sensor 14 so as to control the charging and discharging of nitrogen in the gas storage tank 20.

[0026] This testing box 4 adopts a PLC control technology solution, with hardware designed in a modular fashion, including signal input, output, and control devices. The software is object-oriented, embedding carefully designed software to combine hardware and software for system condition monitoring. This testing box 4 includes fault detection, fault alarm, and fault handling functions, ensuring the safe and reliable operation of the system. It features a touchscreen with high brightness and full Chinese display, using a Siemens PLC module as the information processing and central control unit. It exchanges information with the user through a human-machine interface, greatly facilitating operation. The testing box 4 also has automatic and fault identification functions. Automatic functions include the controller automatically monitoring the system according to user-defined modes based on the currently collected field signals. Fault identification features include comprehensive fault detection and alarm functions, maximizing the safe operation of the system.

[0027] The double-walled oil storage tank, valves, venting and pressure relief valves, solenoid valves, pressure sensors, pressure switches, check valves, air tanks, and sealing rings in this case are all existing technologies. As long as the double-walled oil storage tank, valves, venting and pressure relief valves, solenoid valves, pressure sensors, pressure switches, check valves, air tanks, and sealing rings meet the requirements of this case, they are all acceptable.

[0028] Working principle: The electrical components mentioned in this application are all connected to an external power supply and control switch during use. After the utility model is installed, first check the installation, fixation, and safety protection of the utility model, and then it can be used. During use, the surfaces of the nitrogen supply port 6, system inflation port 7, and pressure detection port 8 of the detection box 4 are all connected by connecting pipes 5 through nuts 18, so that the connecting pipes 5 installed on the system inflation port 7 and nitrogen supply port 6 are connected to the connecting port 21. Then, the double-layer oil storage tank 2 is buried at the bottom of the ground 1, and the connecting pipe 5 installed on the pressure detection port 8 is connected to the gas storage tank 20. Slide the inner slider 101 to insert the buckle 103 into the surface of the plug 104, so that the fan block 105 is locked in the slot on the inner wall of the buckle 103. Under the pull of the spring 102, the tensioning member 10 drives the outer member 9 towards the detection box. 4. Proximity ensures that the connecting pipe 5 is securely connected to each output port. During inflation, open valve 11, solenoid valve 13, and check valve 17. Nitrogen is supplied by gas tank 20. Nitrogen is then filled into the interlayer 3 through nitrogen supply port 6 and system inflation port 7, achieving corrosion protection for the inner wall of the interlayer 3. Pressure sensor 14 can also detect whether there is any leakage inside the interlayer 3. When disassembling the connecting pipe 5, slide the lever 112 to rotate the converter 107 via connecting rod 111, causing the protrusion 109 to slide in the arc groove 108. The protrusion 109 drives the slider 110 to slide, and the slider 110 pushes the fan block 105 out of the slot, allowing the buckle 103 to remove the surface of the insert block 104. Then, rotate the nut 18 to remove the connecting pipe 5. This method is highly practical.

[0029] 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 regarded as 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. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] 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 device for detecting air leakage in the intermediate layer of a buried double-walled metal oil storage tank, wherein the device is installed on the ground (1), characterized in that, A double-layered oil storage tank (2) is installed at the bottom of the ground (1). A sandwich layer (3) is opened in the middle of the inner cavity of the double-layered oil storage tank (2). A detection box (4) is installed at the top of the ground (1). Three connecting pipes (5) are installed at the output port of the detection box (4). An outer part (9) is installed on the surface of the connecting pipe (5). A tensioning part (10) is installed on both sides of the outer part (9). An inner slider (101) is slidably installed on the inner end of the tensioning part (10). The outer end of the inner slider (101) is detachably connected to the outer surface of the detection box (4). A spring (102) is installed on the inner end of the inner slider (101). The inner end of the spring (102) is welded to the bottom of the inner end of the tensioning part (10).

2. The buried double-walled metal oil storage tank intermediate interlayer air leakage detection device according to claim 1, characterized in that, The surface of the test chamber (4) is respectively equipped with a nitrogen supply port (6), a system charging port (7) and a pressure detection port (8). A valve (11) is installed on the surface of each of the nitrogen supply port (6), the system charging port (7) and the pressure detection port (8). The inner side of the nitrogen supply port (6) and the system charging port (7) extends into the inner end of the test chamber (4) and is equipped with an exhaust pressure relief valve (12). The inner side of the nitrogen supply port (6) and the system charging port (7) is connected and equipped with a solenoid valve (13). Two pressure switches (15) are installed on the inner wall of the test chamber (4). A gas pipe (16) is installed between the nitrogen supply port (6) and the system charging port (7) and the two pressure switches (15). A check valve (17) is installed on the inner surface of the system charging port (7). A pressure sensor (14) is installed on the inner side of the pressure detection port (8).

3. The buried double-walled metal oil storage tank intermediate interlayer air leakage detection device according to claim 2, characterized in that, The outer surfaces of the nitrogen supply port (6), system charging port (7) and pressure detection port (8) are threaded. A nut (18) is rotatably installed at one end of the connecting pipe (5). The nut (18) is used in conjunction with the thread. A sealing ring (181) is installed between the nut (18) and the connecting pipe (5). The nitrogen supply port (6), system charging port (7) and pressure detection port (8) correspond one-to-one with the connecting pipe (5). The nitrogen supply port (6), system charging port (7) and pressure detection port (8) are connected to the three connecting pipes (5) in sequence.

4. The device for detecting air leakage in the intermediate interlayer of a buried double-walled metal oil storage tank according to claim 1, characterized in that, The outer end of the inner slider (101) is equipped with a buckle (103), and the surface of the detection box (4) is equipped with a plurality of inserts (104). The inserts (104) correspond one-to-one with the buckles (103). The four ends of the buckle (103) are provided with slots in the middle of their inner walls. The four ends of the inserts (104) are each slidably equipped with a fan block (105) in the middle of their surface. The inner end of the fan block (105) slides into the inner cavity of the insert (104) and is equipped with a spring (106). The fan block (105) cooperates with the slot.

5. The buried double-layer metal oil storage tank interlayer air leakage detection device according to claim 4, characterized in that, The inner cavity of the buckle (103) is rotatably mounted with a rotating ring (107). The top of the rotating ring (107) is provided with four arc-shaped grooves (108) at equal angles. The inner end of the arc-shaped groove (108) is slidably mounted with a protrusion (109). The top of the protrusion (109) is mounted with a slider (110). The slider (110) is slidably mounted in the slot.

6. The device for detecting air leakage in the intermediate interlayer of a buried double-walled metal oil storage tank according to claim 5, characterized in that, The bottom end of the buckle (103) is provided with an arc-shaped hole, and the bottom end of the swivel (107) is provided with a connecting rod (111). The connecting rod (111) slides out of the arc-shaped hole and is provided with a lever (112).

7. The buried double-walled metal oil storage tank intermediate interlayer air leakage detection device according to claim 1, characterized in that, The top of the ground (1) is equipped with an installation wall (19) and a gas storage tank (20). The detection box (4) is installed on the installation wall (19). A first connecting pipe (5) is installed between the gas storage tank (20) and the pressure detection port (8). Two connecting ports (21) are symmetrically installed at the top of the double-layer oil storage tank (2). A second connecting pipe (5) is installed between one of the connecting ports (21) and the nitrogen supply port (6). A third connecting pipe (5) is installed between the other connecting port (21) and the system charging port (7). The connecting port (21) is connected to the interlayer (3).

Images