A leak detection sensor

Abstract

The utility model relates to the technical field of sensor, concretely relates to a leak detection sensor, the oil tank is formed by inner jar and outer jar, and the vacuum gap is formed between the inner jar and the outer jar, the double -layer oil tank is provided with the leakage detection pipe, one end of leakage detection pipe is linked with the vacuum gap, and the other end is linked with the outside of the outer jar, leak detection sensor includes the connecting pipe, one end of connecting pipe is connected with the leakage detection pipe outer end flange, and the other end is connected with the oil gas concentration sensor through the fastener, the connecting pipe is provided with the plugging structure, and the plugging structure is used for controlling the on-off of connecting pipe, the utility model realizes the purpose that the sensor is quickly disassembled and installed under the premise of guaranteeing the vacuum interlayer tightness, improves the maintenance efficiency, reduces the maintenance cost, and has good practicality.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, specifically to a leak detection sensor. Background Technology

[0002] As oil storage facilities, the vacuum level and sealing performance of the interlayer in double-walled oil tanks are crucial to preventing oil leaks. In existing technologies, leak sensors are typically installed directly on the leak detection pipes of the tank, using traditional flange connections. This structure requires complete disassembly of the flange connections during maintenance or sensor replacement, exposing the entire interlayer to the atmosphere and disrupting the vacuum environment. Re-establishing the vacuum is not only time-consuming and labor-intensive, but repeated disassembly can also degrade the sealing performance, increasing the risk of leakage.

[0003] Furthermore, the installation and removal of traditional sensors are cumbersome, requiring specialized tools and considerable time, which fails to meet the needs of rapid maintenance. In emergency situations, such as when a sensor malfunctions and requires immediate replacement, the existing structural design can severely impact maintenance efficiency and may even delay the detection and handling of leaks. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a leak detection sensor that can achieve rapid disassembly and installation while ensuring the airtightness of the vacuum interlayer, thereby improving maintenance efficiency and reducing maintenance costs.

[0005] Based on the above objectives, this utility model provides a leak detection sensor. The oil tank consists of an inner tank and an outer tank, with a vacuum gap formed between the inner tank and the outer tank. The double-layer oil tank is equipped with a leak detection tube, one end of which is connected to the vacuum gap and the other end is connected to the outside of the outer tank. The leak detection sensor includes a connecting pipe, one end of which is connected to the outer flange of the leak detection pipe, and the other end is connected to the oil and gas concentration sensor by fasteners. The connecting pipe is provided with a sealing structure, which is used to control the opening and closing of the connecting pipe.

[0006] Preferably, the sealing structure includes a rotating ring, which is sleeved on the outside of the leakage detection tube and rotatably connected to it; The sealing disc and driving assembly are installed inside the connecting pipe. The sealing disc is located below the bottom end of the connecting pipe, and the upper end surface of the sealing disc is provided with a first sealing ring that contacts the bottom end surface of the connecting pipe. The rotating ring is used to control the sealing disc to move axially along the connecting pipe through the drive component, thereby realizing the connection and disconnection between the connecting pipe and the leakage detection pipe.

[0007] Preferably, the bottom end of the rotating ring is provided with a bearing that is rotatably connected to the connecting pipe; The inner wall of the rotating ring has a convex ring, and a groove is formed on the convex ring. A second sealing ring is provided inside the groove, which is used to form a rotational seal with the top surface of the connecting pipe.

[0008] Preferably, the drive assembly includes an internal gear ring disposed on the inner wall of the convex ring, and connecting rods symmetrically disposed on the top surface of the sealing disc; The inner wall of the connecting pipe is provided with an upper ring plate and a lower ring plate respectively. The connecting rod passes through the lower ring plate and the upper ring plate in sequence. The connecting rod is slidably connected to the lower ring plate through a bushing. The connecting rod is also threadedly connected to the upper ring plate through a nut. The top end of the connecting rod is provided with a gear for meshing with the internal gear ring.

[0009] Preferably, a ring sleeve is fitted onto the rotating ring, and a groove parallel to its axial direction is formed on the outer wall of the rotating ring. The ring sleeve is slidably connected to the rotating ring through the groove. The ring is threaded to the outer wall of the connecting pipe, and the outer wall of the ring is hexagonal. The on / off state of the sealing disc acting on the connecting pipe can be determined by the position of the ring.

[0010] Preferably, the bottom end of the connecting pipe forms a first flange, and the outer end of the leakage detection pipe forms a second flange; A third sealing ring is provided between the first flange and the second flange, and the first flange and the second flange are fixedly connected by bolts.

[0011] Preferably, the fastener has a disc-shaped structure and is fixedly connected to the oil and gas concentration sensor, and is threadedly connected to the inner edge of the rotating ring; The fasteners exposed on the rotating ring are hexagonal in shape.

[0012] The beneficial effects of this utility model are: 1. This utility model achieves the goal of quickly disassembling and installing sensors while ensuring the airtightness of the vacuum jacket, thereby improving maintenance efficiency, reducing maintenance costs, and having good practicality.

[0013] 2. Quick disassembly and installation: Through the design of the rotating ring and drive assembly, the connection of the pipe can be turned on or off simply by rotating the ring sleeve, without the need to completely disassemble the flange, which greatly shortens the maintenance time.

[0014] 3. Sealing reliability: The multi-stage sealing structure, including the first sealing ring, the second sealing ring, and the third sealing ring, ensures that the sealing performance of the vacuum jacket is not affected during disassembly, effectively preventing oil and gas leakage.

[0015] 4. Status visualization: The up and down position of the ring directly reflects the working status of the sealing disc, making it easy for operators to quickly determine the connection status of the sensors. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in 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 for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a schematic diagram of the internal structure of the oil and gas concentration sensor, fastener, connecting pipe, sealing structure and ring sleeve of this utility model; The numbers on the map are: 1-Inner tank; 2-Outer tank; 3-Leakage detection pipe; 31-Second flange; 4-Oil and gas concentration sensor; 5-Fastener; 6-Connecting pipe; 61-Upper ring plate; 62-Lower ring plate; 63-First flange; 631-Third sealing ring; 64-Bolt; 7-Sealing structure; 71-Rotating ring; 711-Convex ring; 712-First sealing ring; 713-Bearing; 72-Drive assembly; 721-Internal gear ring; 722-Connecting rod; 723-Nut; 724-Bushing; 725-Gear; 73-Sealing disc; 731-Second sealing ring; 8-Ring sleeve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] This utility model proposes a leak detection sensor, such as... Figures 1 to 4 As shown, this is used for leak detection of a double-walled oil tank. The oil tank consists of an inner tank 1 and an outer tank 2, with a vacuum gap between the inner tank 1 and the outer tank 2. The double-walled oil tank is equipped with a leak detection pipe 3, one end of which is connected to the vacuum gap and the other end is connected to the outside of the outer tank 2.

[0021] The leak detection sensor includes a connecting pipe 6, one end of which is connected to the outer end of the leak detection pipe 3 via a flange, and the other end is connected to the oil and gas concentration sensor 4 via fastener 5. The oil and gas concentration sensor 4 should be a fixed oil and gas concentration sensor for oil depots (such as model RBK-6000-2, BT-6000-FX, etc.). Sealing structure 7: Installed on the connecting pipe 6, used to control the opening and closing of the connecting pipe 6. The sealing structure 7 includes a rotating ring 71, a sealing disc 73, and a drive assembly 72. The rotating ring 71 is sleeved on the outside of the leakage detection pipe 3 and rotatably connected to it. The bottom end of the rotating ring 71 is rotatably connected to the connecting pipe 6 via a bearing 713. A grooved convex ring 711 is formed on the inner wall, and a second sealing ring 731 is provided in the groove to form a rotational seal with the top surface of the connecting pipe 6. The sealing disc 73 is located below the bottom end of the connecting pipe 6, and its upper end face is provided with a first sealing ring 712 that contacts the bottom end face of the connecting pipe 6. The drive assembly 72 is used to control the rotating ring 71 to move the sealing disc 73 axially along the connecting pipe 6, thereby opening and closing the connection between the connecting pipe 6 and the leakage detection pipe 3.

[0022] like Figure 4 As shown, the drive assembly 72 includes an internal gear ring 721 disposed on the inner wall of the convex ring 711, and a connecting rod 722 symmetrically disposed on the top surface of the sealing disc 73. An upper ring plate 61 and a lower ring plate 62 are respectively disposed on the upper and lower sides of the inner wall of the connecting pipe 6. The connecting rod 722 passes through the lower ring plate 62 and the upper ring plate 61 in sequence. The connecting rod 722 is slidably connected to the lower ring plate 62 via a bushing 724, and is also threadedly connected to the upper ring plate 61 via a nut 723. The top end of the connecting rod 722 is provided with a gear 725 for meshing with the internal gear ring 721.

[0023] like Figure 4 As shown, a ring sleeve 8 is fitted on the rotating ring 71. A groove parallel to its axis is opened on the outer wall of the rotating ring 71. The ring sleeve 8 is slidably connected to the rotating ring 71 through the groove. The ring sleeve 8 is threadedly connected to the outer wall of the connecting pipe 6. The outer wall of the ring sleeve 8 is hexagonal. The on / off state of the sealing disc 73 acting on the connecting pipe 6 can be intuitively known from the position of the ring sleeve 8.

[0024] like Figure 3 and Figure 4As shown, the bottom end of the connecting pipe 6 forms a first flange 63, and the outer end of the leakage detection pipe 3 forms a second flange 31. A third sealing ring 631 is provided between the first flange 63 and the second flange 31, and they are fixedly connected by bolts 64. The fastener 5 has a disc structure and is fixedly connected to the oil and gas concentration sensor 4, and is threaded to the inner edge of the rotating ring 71. The part of the fastener exposed on the rotating ring 71 is hexagonal for easy operation.

[0025] Installation process First, the first flange 63 of the connecting pipe 6 and the second flange 31 of the leakage detection pipe 3 are fixedly connected by bolts 64, with a third sealing ring 631 placed in between to ensure a seal. Then, the rotating ring 71 is fitted over the outside of the connecting pipe 6 and rotatably connected to the connecting pipe 6 via a bearing 713, with the second sealing ring 731 on the convex ring 711 forming a rotational seal with the top surface of the connecting pipe 6. Next, the drive assembly 72 is installed, and the connecting rod 722 is passed sequentially through the lower ring plate 62 and the upper ring plate 61, and threadedly connected to the nut 723, with the gear 725 at the top meshing with the internal gear ring 721. Afterwards, the sealing disc 73 is installed at the bottom end of the connecting rod 722, with the first sealing ring 712 on its upper end contacting the bottom surface of the connecting pipe 6. Finally, the ring sleeve 8 is fitted over the rotating ring 71 and threadedly connected to the outer wall of the connecting pipe 6.

[0026] Working principle When it is necessary to disassemble the oil and gas concentration sensor 4, rotate the ring sleeve 8 to move it upward, causing the rotating ring 71 to rotate. The rotating ring 71, through the meshing of the internal gear ring 721 and the gear 725, drives the connecting rod 722 to move upward, thereby causing the sealing disc 73 to move upward and make tight contact with the bottom end face of the connecting pipe 6, cutting off the connection between the connecting pipe 6 and the leakage detection pipe 3, and maintaining the sealing of the vacuum jacket. At this time, the fastener 5 can be directly removed to take off the oil and gas concentration sensor 4 for maintenance or replacement.

[0027] When the sensor needs to be installed, connect the sensor to the inner edge of the rotating ring 71 via the fastener 5. Then rotate the ring sleeve 8 to move it downward, causing the rotating ring 71 to rotate in the opposite direction. The connecting rod 722 moves downward, and the sealing plate 73 leaves the bottom end of the connecting pipe 6, restoring the connection between the connecting pipe 6 and the leakage detection pipe 3. The sensor can then work normally.

[0028] The controllers and sensors involved in this application are all products of the corresponding models produced by existing manufacturers (such as oil and gas concentration sensor 4). This application does not involve any improvement to the corresponding control and algorithm. It only connects and assembles the corresponding devices to form the leak detection sensor of this application.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 leak detection sensor for leak detection of a double-walled oil tank, the oil tank consisting of an inner tank and an outer tank, with a vacuum gap formed between the inner tank and the outer tank, the double-walled oil tank being equipped with a leak detection tube, one end of the leak detection tube being connected to the vacuum gap and the other end being connected to the outside of the outer tank; characterized in that The leak detection sensor includes a connecting pipe, one end of which is connected to the outer flange of the leak detection pipe, and the other end is connected to the oil and gas concentration sensor by fasteners. The connecting pipe is provided with a sealing structure, which is used to control the opening and closing of the connecting pipe.

2. The leak detection sensor of claim 1, wherein, The sealing structure includes a rotating ring, which is sleeved on the outside of the leakage detection tube and rotatably connected to it. The sealing disc and driving assembly are installed inside the connecting pipe. The sealing disc is located below the bottom end of the connecting pipe, and the upper end surface of the sealing disc is provided with a first sealing ring that contacts the bottom end surface of the connecting pipe. The rotating ring is used to control the sealing disc to move axially along the connecting pipe through the drive component, thereby realizing the connection and disconnection between the connecting pipe and the leakage detection pipe.

3. A leak detection sensor according to claim 2, wherein, The bottom end of the rotating ring is provided with a bearing that is rotatably connected to the connecting pipe; The inner wall of the rotating ring has a convex ring, and a groove is formed on the convex ring. A second sealing ring is provided inside the groove, which is used to form a rotational seal with the top surface of the connecting pipe.

4. The leak detection sensor of claim 2, wherein, The drive assembly includes an internal gear ring disposed on the inner wall of the convex ring, and connecting rods symmetrically disposed on the top surface of the sealing disc; The inner wall of the connecting pipe is provided with an upper ring plate and a lower ring plate respectively. The connecting rod passes through the lower ring plate and the upper ring plate in sequence. The connecting rod is slidably connected to the lower ring plate through a bushing. The connecting rod is also threadedly connected to the upper ring plate through a nut. The top end of the connecting rod is provided with a gear for meshing with the internal gear ring.

5. The leak detection sensor of claim 2, wherein, A ring sleeve is fitted on the rotating ring, and a sliding groove parallel to its axis is formed on the outer wall of the rotating ring. The ring sleeve is slidably connected to the rotating ring through the sliding groove. The ring is threaded to the outer wall of the connecting pipe, and the outer wall of the ring is hexagonal. The on / off state of the sealing disc acting on the connecting pipe can be determined by the position of the ring.

6. The leak detection sensor of claim 1, wherein, The bottom end of the connecting pipe forms a first flange, and the outer end of the leakage detection pipe forms a second flange; A third sealing ring is provided between the first flange and the second flange, and the first flange and the second flange are fixedly connected by bolts.

7. The leak detection sensor of claim 2, wherein, The fastener has a disc-shaped structure and is fixedly connected to the oil and gas concentration sensor, and is also threadedly connected to the inner edge of the rotating ring. The fasteners exposed on the rotating ring are hexagonal in shape.

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