A leak-proof connection structure for mercury delivery pipelines

Abstract

This utility model discloses a leak-proof connection structure for a mercury refining pipeline, comprising a fixed plate, a first upper fixed block fixedly connected to the inner wall of the fixed plate, a lifting screw installed within the first upper fixed block, a sealing ring fixedly connected to the lower end of the lifting screw, and a flange installed within the sealing ring. Through this structure, by rotating the rotating head to move the lifting screw up and down, the tightness between the sealing ring and the flange can be adjusted, achieving adjustable sealing of the pipeline connection. The multi-fixed block design enhances structural stability and provides double sealing protection, forming two seals: the first is the flange gasket itself, and the second is the externally pressed sealing ring. Even if the first seal fails unexpectedly, the second seal can completely prevent leakage. The flange inner hole facilitates installation and fixation. This structure effectively prevents leakage during mercury refining pipeline transportation, improving safety and sealing reliability. This structure is an independent, attachable module that can be installed on existing standard flange-connected pipelines.

Description

Technical Field

[0001] This utility model relates to the field of leakage prevention technology for conveying pipes, and in particular to a leakage prevention connection structure for a mercury conveying pipeline. Background Technology

[0002] Refined mercury is an important industrial raw material widely used in chlor-alkali chemicals, electronics, medical equipment, precious metal smelting, and precision instrument manufacturing. Due to its unique physicochemical properties, mercury is typically transported via pipeline systems. In industrial production, mercury transport pipeline systems are a critical component of the process flow. However, as a highly volatile and extremely toxic heavy metal liquid, any leakage during its transport can cause severe harm to production safety, operator health, and the environment. Mercury vapor is easily inhaled, leading to severe damage to the central nervous system and kidneys; even small leaks can persist and accumulate in the environment, causing persistent pollution. Therefore, ensuring the absolute airtightness of mercury transport pipeline systems, especially at pipe connections, is a core technical challenge that related industries must address.

[0003] Existing mercury pipe connection technologies mainly rely on externally applied mechanical forces (such as bolt tightening and thread tightening) to compress the sealing elements, resulting in insufficient static sealing reliability: it is difficult to guarantee that an effective seal will be maintained continuously during long-term operation, especially under thermal cycling and pressure fluctuation conditions. Safety design is lacking: the structure itself does not consider directing potential leaks to a safe area for treatment or collection, and it also lacks a built-in leak detection mechanism. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a leak-proof connection structure for mercury conveying pipelines. This structure allows the rotating head to drive the lifting screw to move up and down, thereby adjusting the tightness of the sealing ring and the flange, achieving sealing adjustment of the pipeline connection. The flange inner hole facilitates installation and fixation, enabling the structure to effectively prevent leakage during mercury conveying, and improving safety and sealing reliability.

[0005] This utility model also provides a leak-proof connection structure for a mercury conveying pipeline, including a fixing plate, a first upper fixing block fixedly connected to the inner wall of the fixing plate, a lifting screw provided in the first upper fixing block, a sealing ring fixedly connected to the lower end of the lifting screw, and a flange provided in the sealing ring.

[0006] According to the present invention, a leak-proof connection structure for a mercury conveying pipeline is provided, wherein a fixing ear is provided on the outer wall of the fixing plate, a bolt is provided on the fixing ear, and a base is fixedly connected to the lower end of the fixing plate.

[0007] According to the present invention, a leak-proof connection structure for a mercury conveying pipeline is provided, wherein the sealing ring is fixedly connected to the conveying pipeline, and a flange is provided inside the conveying pipeline.

[0008] According to the present invention, a leak-proof connection structure for a mercury conveying pipeline is provided, wherein a rotating head is fixedly connected to the upper end of the lifting screw, and a fixing ring is fixedly connected to the upper end of the sealing ring.

[0009] According to the present invention, a leak-proof connection structure for a mercury conveying pipeline is provided, wherein a second fixing block is provided inside the fixing plate, and a second lower fixing block is provided at the lower end of the first upper fixing block.

[0010] According to the present invention, a leak-proof connection structure for a mercury conveying pipeline is provided, wherein the lower end of the lifting screw is movably connected to a flange, and the flange has multiple inner holes. Beneficial effects

[0011] 1. By rotating the rotating head, the lifting screw can be moved up and down to adjust the tightness of the sealing ring and the flange, thus achieving the sealing adjustment of the pipeline connection; the multi-fixed block design enhances the structural stability.

[0012] 2. Double sealing protection: This system provides two layers of sealing: the first is the flange gasket itself, and the second is an externally tightened sealing ring. Even if the first seal fails unexpectedly, the second seal can completely prevent leakage. The flange inner bore facilitates installation and fixation. This structure effectively prevents leakage during mercury transport, improving safety and sealing reliability. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a perspective view of a leak-proof connection structure for a mercury conveying pipeline according to this utility model;

[0015] Figure 2 This is an internal structural diagram of a leak-proof connection structure for a mercury delivery pipeline according to this utility model;

[0016] Figure 3 This is a structural diagram of a fixing plate for a leak-proof connection structure of a mercury conveying pipeline according to this utility model;

[0017] Figure 4 This is a structural diagram of a leak-proof connection flange for a mercury conveying pipeline according to this utility model.

[0018] Legend:

[0019] 1. Fixing plate; 2. Bolt; 3. Fixing lug; 4. Base; 5. First upper fixing block; 6. Second lower fixing block; 7. Second fixing block; 8. Lifting screw; 9. Sealing ring; 10. Inner hole; 11. Flange; 12. First conveying pipe; 13. Fixing ring; 14. Rotating head. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Reference Figure 1-4 This utility model provides a leak-proof connection structure for a mercury conveying pipeline, which includes a fixing plate 1, a first upper fixing block 5 fixedly connected to the inner wall of the fixing plate 1, a lifting screw 8 provided in the first upper fixing block 5, a sealing ring 9 fixedly connected to the lower end of the lifting screw 8, and a flange 11 provided in the sealing ring 9.

[0022] Specifically, the fixing plate 1 is the main structure. Its internal first upper fixing block 5 and second lower fixing block 6 provide precise vertical guidance and support for the lifting screw 8, ensuring it can only move up and down without tilting. The lower end of the lifting screw 8 presses down on the sealing ring 9, which is made of a mercury-resistant soft metal or special rubber. Under pressure, the sealing ring 9 deforms, tightly wrapping around the pipe on one hand and firmly pressing the mating surfaces of the upper and lower flanges 11 on the other, forming the first main seal.

[0023] The outer wall of the fixing plate 1 is provided with fixing ears 3, and the fixing ears 3 are provided with bolts 2. The lower end of the fixing plate 1 is fixedly connected to the base 4.

[0024] Specifically, the entire connection structure is firmly fixed to the external foundation (such as a wall or bracket) by fixing lug 3 and bolt 2, eliminating vibration and stress at the pipe connection, which is crucial to preventing leakage. The base 4 provides the lower support point for the entire structure, forming a stable force flow path with the fixing lug 3 above.

[0025] The sealing ring 9 is fixedly connected to the first conveying pipe 12, and the first conveying pipe 12 is provided with a flange 11.

[0026] Specifically, the two flanges 11 are tightened by bolts 2 passing through the inner hole 10. This patented structure adds an external rigid compression and sealing layer on this basis, which is a redundant safety design.

[0027] The upper end of the lifting screw 8 is fixedly connected to the rotating head 14, and the upper end of the sealing ring 9 is fixedly connected to the fixing ring 13.

[0028] Specifically, the rotating head 14 drives the lifting screw 8 to move up and down. The fixed ring 13 is a rigid ring that works in conjunction with the lifting screw 8 to distribute the pressure evenly on the sealing ring 9, ensuring the uniformity of the seal.

[0029] The fixing plate 1 is provided with a second fixing block 7, and the lower end of the first upper fixing block 5 is provided with a second lower fixing block 6.

[0030] Specifically, the fixing plate 1 is the main structure, and the first upper fixing block 5 and the second lower fixing block 6 inside it provide precise vertical guidance and support for the lifting screw 8, ensuring that it can only move up and down without tilting.

[0031] The lower end of the lifting screw 8 is movably connected to the flange 11, and the flange 11 has multiple inner holes 10.

[0032] Specifically, the two flanges 11 are tightened by bolts 2 passing through the inner hole 10. The structure of this patent adds an external rigid compression and sealing layer on this basis.

[0033] Working principle: The rotating head 14 drives the lifting screw 8 to move up and down, which can adjust the tightness of the sealing ring 9 and the flange 11, and realize the sealing adjustment of the pipeline connection; the multi-fixed block design enhances the structural stability; the inner hole 10 of the flange 11 facilitates installation and fixing; this structure can effectively prevent leakage during the transportation of refined mercury, and improve safety and sealing reliability.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A leak-proof connecting structure of a refined mercury delivery pipeline, comprising a fixing plate (1), characterized in that: The inner wall of the fixing plate (1) is fixedly connected to the first upper fixing block (5), and the first upper fixing block (5) is provided with a lifting screw (8). The lower end of the lifting screw (8) is fixedly connected to a sealing ring (9), and the sealing ring (9) is provided with a flange (11).

2. The leak-proof connection structure of a refined mercury delivery pipeline according to claim 1, characterized in that, The fixing plate (1) has a fixing ear (3) on its outer wall, and a bolt (2) is provided on the fixing ear (3). The base (4) is fixedly connected to the lower end of the fixing plate (1).

3. The leak-proof connection structure of a refined mercury delivery pipeline according to claim 1, characterized in that, The sealing ring (9) is fixedly connected to the first conveying pipe (12), and the first conveying pipe (12) is provided with a flange (11).

4. The leak-proof connection structure of a refined mercury delivery pipeline according to claim 1, characterized in that, The upper end of the lifting screw (8) is fixedly connected to the rotating head (14), and the upper end of the sealing ring (9) is fixedly connected to the fixing ring (13).

5. The leak-proof connection structure of a refined mercury delivery pipeline according to claim 1, characterized in that, The fixing plate (1) is provided with a second fixing block (7), and the lower end of the first upper fixing block (5) is provided with a second lower fixing block (6).

6. The leak-proof connection structure of a refined mercury delivery pipeline according to claim 1, characterized in that, The lower end of the lifting screw (8) is movably connected to the flange (11), and the flange (11) has multiple inner holes (10).

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