Leakage detection device for storage tank

Abstract

The utility model belongs to the field of liquefied gas storage tanks, and particularly relates to a leakage detection device for a storage tank, which comprises a detection cylinder main body, a cover plate is arranged on the detection cylinder main body, the bottom of the detection cylinder main body is fixedly connected with heightening stilts, and the inner wall of the detection cylinder main body is fixedly connected with a placing disc. An air outlet is formed in the bottom of the detection cylinder main body, an air inlet is formed in the top of the detection cylinder main body, and a lower flow guide cover is fixedly connected to the bottom of the placement disc. According to the leakage detection device for the storage tank, through the cooperation of the upper flow guide cover and the exhaust fan, a directional airflow channel with the upper air inlet and the lower air exhaust is formed in the detection cylinder main body. When the storage tank leaks, leaked gas is rapidly guided to the air outlet pipeline by airflow and preferentially passes through the first gas detector below, it is ensured that the leaked gas (such as liquefied natural gas) with large density can be captured in time, an alarm is triggered, and the detection response speed is increased.

Description

Technical Field

[0001] This utility model relates to the field of liquefied gas storage tank technology, specifically a leakage detection device for storage tanks. Background Technology

[0002] In industrial production, the safe operation of cryogenic liquefied gas storage tanks is crucial. Leaks in these tanks can lead to safety accidents or resource waste. Therefore, a device is needed to detect leaks in storage tanks in a timely manner, ensuring rapid detection and handling when leaks occur, and guaranteeing safe and stable production operations.

[0003] Currently, most existing storage tank leakage detection devices use a single detector and lack directional airflow guidance. Leaking gas can easily diffuse or accumulate in the detection space, preventing the gas from reaching the detector in a timely manner. Furthermore, a single detector cannot cover areas at different heights, easily creating blind spots and affecting the timeliness and comprehensiveness of leakage detection. In view of this, we propose a leakage detection device for storage tanks. Utility Model Content

[0004] The main objective of this invention is to provide a leakage detection device for storage tanks, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes a leakage detection device for storage tanks, comprising a detection cylinder body, a cover plate on the detection cylinder body, a heightening support fixedly connected to the bottom of the detection cylinder body, a placement tray fixedly connected to the inner wall of the detection cylinder body, an air outlet at the bottom of the detection cylinder body, an air inlet at the top of the detection cylinder body, a lower guide shroud fixedly connected to the bottom of the placement tray, an abutment ring fixedly connected to the outer wall of the lower guide shroud, an air outlet pipe fixedly connected to the bottom of the abutment ring, a support plate frame fixedly connected to the bottom of the lower guide shroud, a gas detector fixedly mounted on the top of the support plate frame, an installation plate frame fixedly connected to the inner wall of the air outlet pipe, and an exhaust fan fixedly connected to the bottom of the installation plate frame.

[0006] Preferably, a filter screen is fixedly installed at the bottom of the detection cylinder body, and a through hole is provided on the placement plate. Multiple sets of through holes are provided, and all through holes are located directly above the lower guide shroud opening.

[0007] Preferably, an upper air guide shroud is fixedly connected to the inner wall of the detection cylinder body, and a sealing sleeve is fixedly connected to the bottom of the upper air guide shroud. The upper air guide shroud is located at the air inlet. Through the cooperation of the sealing sleeve and the upper air guide shroud, a part of the upper part of the inside of the detection cylinder body (located above the sealing sleeve) is sealed.

[0008] Preferably, a second support plate is fixedly connected to the bottom of the closed sleeve, and a second gas detector is fixedly installed at the bottom of the second support plate. Both the first gas detector and the second gas detector are GasAlertMicroIR.

[0009] Preferably, a dust cover is fixedly connected to the top of the detection cylinder body, and a ventilation slot is provided on the dust cover. Four sets of ventilation slots are provided on the side walls of the dust cover, and an annular filter screen is sleeved on the outer wall of the dust cover.

[0010] Preferably, the detection cylinder body has a docking groove, and the outer wall of the cover plate is fixedly connected with a docking boss.

[0011] Preferably, a threaded rod is fixedly connected to the outer wall of the detection cylinder body, and a hexagonal nut is threaded onto the threaded rod.

[0012] This invention provides a leakage detection device for storage tanks. It has the following advantages:

[0013] (1) The leakage detection device for the storage tank forms a directional airflow channel of "upper air intake and lower air extraction" in the main body of the detection cylinder through the cooperation of the upper guide shroud and the exhaust fan. When the storage tank leaks, the leaking gas is quickly guided to the air outlet pipe by the airflow and passes through the gas detector below first, ensuring that the leaking gas with a higher density (such as liquefied natural gas) can be captured in time and trigger the alarm, thereby improving the detection response speed.

[0014] (2) The leakage detection device for the storage tank can independently monitor leaked gas (such as gas whose density changes due to temperature changes) that is not completely driven by the airflow and remains in the middle and upper area by adding a gas detector II below the closed sleeve. The two detectors form a highly complementary three-dimensional detection network, covering the diffusion path of gases of different densities, eliminating detection blind spots, and realizing leakage detection without dead angles in the whole space. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is an exploded cross-sectional view of the dust cover and annular filter screen of this utility model.

[0018] Figure 3 This is a cross-sectional view of the lower air guide cover and filter screen of this utility model;

[0019] Figure 4 This is a cross-sectional view of the placement tray and air outlet duct of this utility model.

[0020] Figure 5 This is a cross-sectional view of the upper guide shield and the closed sleeve of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the present utility model. Figure 2 An enlarged diagram of A in the diagram.

[0022] Explanation of reference numerals: 1. Detection cylinder body; 2. Cover plate; 3. Heightening feet; 4. Placement tray; 5. Air outlet; 6. Air inlet; 7. Lower air guide shroud; 8. Abutment ring; 9. Air outlet duct; 10. Support plate frame one; 11. Gas detector one; 12. Mounting plate frame; 13. Exhaust fan; 14. Filter screen; 15. Upper air guide shroud; 16. Sealing sleeve; 17. Support plate frame two; 18. Gas detector two; 19. Dust cover; 20. Ring-shaped filter screen; 21. Docking groove; 22. Docking boss; 23. Threaded bar.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Please see Figures 1-6 This utility model proposes a leakage detection device for storage tanks, including a detection cylinder body 1, a cover plate 2 on the detection cylinder body 1, a heightening foot 3 fixedly connected to the bottom of the detection cylinder body 1, a placement tray 4 fixedly connected to the inner wall of the detection cylinder body 1, an air outlet 5 at the bottom of the detection cylinder body 1, an air inlet 6 at the top of the detection cylinder body 1, a lower guide shroud 7 fixedly connected to the bottom of the placement tray 4, an abutment ring 8 fixedly connected to the outer wall of the lower guide shroud 7, an air outlet pipe 9 fixedly connected to the bottom of the abutment ring 8, a support plate frame 10 fixedly connected to the bottom of the lower guide shroud 7, a gas detector 11 fixedly installed on the top of the support plate frame 10, an installation plate frame 12 fixedly connected to the inner wall of the air outlet pipe 9, and an exhaust fan 13 fixedly connected to the bottom of the installation plate frame 12.

[0026] In this utility model, a filter screen 14 is fixedly installed at the bottom of the detection cylinder body 1, and a through hole is provided on the placement plate 4. Multiple sets of through holes are provided, and all through holes are located directly above the opening of the lower guide shroud 7. An upper guide shroud 15 is fixedly connected to the inner wall of the detection cylinder body 1, and a sealing sleeve 16 is fixedly connected to the bottom of the upper guide shroud 15. The upper guide shroud 15 is located at the air inlet 6. Through the cooperation of the sealing sleeve 16 and the upper guide shroud 15, a part of the upper part of the inside of the detection cylinder body 1 (located above the sealing sleeve 16) is sealed. A second support plate frame 17 is fixedly connected to the bottom of the sealing sleeve 16, and a second gas detector 18 is fixedly installed at the bottom of the second support plate frame 17. The models of the first gas detector 11 and the second gas detector 18 are both GasAlertMicro5IR. Since they are set at different heights, they can detect the gas in different areas inside the detection cylinder body 1.

[0027] Furthermore, a dust cover 19 is fixedly connected to the top of the detection cylinder body 1. The dust cover 19 has ventilation slots, and four sets of ventilation slots are located on the side walls of the dust cover 19. An annular filter 20 is fitted onto the outer wall of the dust cover 19. The annular filter 20 can block particles from entering the air inlet 6, ensuring that the air entering the detection cylinder body 1 is clean. A docking slot 21 is provided on the detection cylinder body 1. A docking boss 22 is fixedly connected to the outer wall of the cover plate 2. A threaded rod 23 is fixedly connected to the outer wall of the detection cylinder body 1. A hexagonal nut is threaded onto the threaded rod 23. By tightening the hexagonal nut, the cover plate 2 can be tightly fixed to the detection cylinder body 1.

[0028] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0029] When in use, place the storage tank on the placement plate 4, insert the mating boss 22 of the cover plate 2 into the mating groove 21 of the detection cylinder body 1, and then tighten the hexagonal nut on the threaded rod 23 to ensure the cover is closed.

[0030] When the exhaust fan 13 is turned on, outside air enters from the top air inlet 6, flows downward after being guided by the upper guide shroud 15, and the gas leaking from the storage tank falls into the lower guide shroud 7 through the through hole of the placement plate 4. It is then carried to the air outlet duct 9 by the airflow generated by the exhaust fan 13. During this process, it passes through the gas detector 11 below, which can trigger an alarm.

[0031] Even if some of the leaked gas is not fully moved due to density differences or airflow fluctuations, and remains below the closed sleeve 16, it can still be detected by the gas detector 18, thereby achieving synchronous monitoring of leaks at different heights.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A leakage detection device for storage tanks, comprising a detection cylinder body (1), characterized in that: The detection cylinder body (1) is provided with a cover plate (2), the bottom of the detection cylinder body (1) is fixedly connected with a heightening foot column (3), the inner wall of the detection cylinder body (1) is fixedly connected with a placement plate (4), the bottom of the detection cylinder body (1) is provided with an air outlet (5), the top of the detection cylinder body (1) is provided with an air inlet (6), the bottom of the placement plate (4) is fixedly connected with a lower guide hood (7), the outer wall of the lower guide hood (7) is fixedly connected with an abutment ring (8), the bottom of the abutment ring (8) is fixedly connected with an air outlet pipe (9), the bottom of the lower guide hood (7) is fixedly connected with a support plate frame (10), the top of the support plate frame (10) is fixedly installed with a gas detector (11), the inner wall of the air outlet pipe (9) is fixedly connected with an installation plate frame (12), and the bottom of the installation plate frame (12) is fixedly connected with an exhaust fan (13).

2. The leakage detection device for a storage tank according to claim 1, characterized in that: A filter screen (14) is fixedly installed at the bottom of the detection cylinder body (1), and a through hole is provided on the placement plate (4).

3. The leakage detection device for a storage tank according to claim 1, characterized in that: The inner wall of the detection cylinder body (1) is fixedly connected to an upper guide shroud (15), and the bottom of the upper guide shroud (15) is fixedly connected to a sealing sleeve (16).

4. A leakage detection device for a storage tank according to claim 3, characterized in that: The bottom of the closed sleeve (16) is fixedly connected to a support plate frame two (17), and a gas detector two (18) is fixedly installed at the bottom of the support plate frame two (17).

5. A leakage detection device for a storage tank according to claim 1, characterized in that: A dust cover (19) is fixedly connected to the top of the detection cylinder body (1). A ventilation slot is provided on the dust cover (19). A ring-shaped filter screen (20) is sleeved on the outer wall of the dust cover (19).

6. A leakage detection device for a storage tank according to claim 1, characterized in that: The detection cylinder body (1) is provided with a docking groove (21), and the outer wall of the cover plate (2) is fixedly connected with a docking boss (22).

7. A leakage detection device for a storage tank according to claim 1, characterized in that: A threaded rod (23) is fixedly connected to the outer wall of the main body (1) of the detection cylinder, and a hexagonal nut is threaded onto the threaded rod (23).

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