Improved probe sealing cavity structure

Abstract

The utility model discloses an improved probe sealing cavity structure, belongs to the technical field of corrosion on-line monitoring tests, and aims to improve the sealing performance and the disassembly and assembly convenience of a probe. The sealing cavity structure comprises a probe, a sealing cavity, a locking element and a connecting element, the upper end of the compression nut is matched with the locking nut through threads, when the locking nut is rotated to be connected with the compression nut in a matched mode, the locking elastic piece is made to contract to wrap the probe tightly, and the other end of the compression nut is connected with one end of the sealing cavity. The pressing ring and the sealing ring are pressed downwards through the pressing nut, and then the pressing nut is fastened through the limiting nut. The pipeline is provided with a connecting-out device of the flange pup joint, and the tail end of the probe enters the pipeline through the sealing cavity and the connecting-out device of the flange pup joint.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrosion online monitoring test, and particularly relates to an improved probe sealing cavity structure. Background Art

[0002] During the long-term service life of pipelines, the inner wall of the pipeline will inevitably undergo physical and chemical reactions with the conveying medium, resulting in corrosion. To investigate the corrosion status of the inner wall caused by corrosive media inside the pipeline and evaluate the long-term stability of the pipeline, interventional corrosion monitoring probe technology is often used to monitor the internal corrosion status of the pipeline. A data collector equipped with corresponding test probes measures and collects real-time corrosion data on the inner wall of the pipeline. Finally, the on-site corrosion data is transmitted to the data analysis platform via wired or wireless means for display and analysis.

[0003] Currently, intrusive corrosion monitoring probes are often installed using a specific access device, coupled with a suitable sealing structure to effectively seal potential leaks in the probe, preventing leakage of the internal medium. However, conventional sealing methods for probe leaks, such as using a gland to compress the packing, while this sealing structure provides good sealing performance, often make it difficult to remove the probe during major overhauls, when the probe system needs to be disassembled for maintenance, and after the effective measurement portion of the probe has been depleted, due to the hardening of the packing. Therefore, further improvements to the probe's sealing cavity structure are needed. Utility Model Content

[0004] The utility model aims to provide an improved probe sealing cavity structure to solve the problem that the probe is difficult to remove due to the hardening of the filler in the existing sealing form, thereby improving the sealing performance of the probe while ensuring the convenience of disassembly and assembly.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an improved probe sealing cavity structure, wherein the sealing cavity structure includes: a probe, a sealing cavity and a locking element and a connecting element; the upper end of the clamping nut is matched with the locking nut through a thread, and when the locking nut is rotated and matched with the clamping nut, the locking spring is caused to shrink and wrap the probe, and the other end of the clamping nut is connected to one end of the sealing cavity; the pressure ring and the sealing ring are pressed down by the clamping nut, and then the clamping nut is tightened by the limit nut; a flange short-circuit access device is installed on the pipeline, and the end of the probe enters the interior of the pipeline through the sealing cavity and the flange short-circuit access device.

[0006] In the above-mentioned improved probe sealing cavity structure, one end of the flange short-circuit is processed with an external thread structure, and one end inside the sealing cavity is provided with an internal thread structure matching the flange short-circuit.

[0007] In the above-mentioned improved probe sealing cavity structure, the sealing cavity and the flange short-circuit can be sealed at the thread by raw tape or sealant.

[0008] In the above-mentioned improved probe sealing cavity structure, a thread structure matching the external thread of the compression nut is processed inside the limiting nut, and the degree of compression of the compression nut on the sealing ring can be changed by adjusting the height of the limiting nut.

[0009] In the above-mentioned improved probe sealing cavity structure, the main sealing structure portion of the sealing cavity is a sealing groove for placing a sealing ring, and the sealing groove groove structure can be rectangular or triangular.

[0010] In the above-mentioned improved probe sealing cavity structure, the sealing ring is a sealing filler, which is a circular ring structure and has a certain elastic deformation ability.

[0011] In the above-mentioned improved probe sealing cavity structure, the sealing ring can be provided as one or more rings.

[0012] In the above-mentioned improved probe sealing cavity structure, a probe electrode is provided at one end of the probe entering the pipeline.

[0013] In the above-mentioned improved probe sealing cavity structure, the probe, locking spring, locking nut, compression nut, limit nut, sealing cavity and flange short circuit are made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the improved probe sealing cavity structure provided by the present invention, on the one hand, has a relatively good fastening effect and sealing in the radial and longitudinal directions, can slow down or prevent the leakage of the medium inside the pipeline, and meet the pressure requirements at the same time; on the other hand, the structural design of the sealing cavity is simple, which can improve the safety of the staff's operation and the convenience of probe disassembly and assembly; on the other hand, by rotating the knob to adjust the tightness of the tightening nut, the force inside the sealing groove is changed and the leakage between the probe and the component is determined. By adjusting the tightness of the knob, the purpose of leak-free disassembly and assembly of the probe is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. 1 is an overall schematic diagram of an improved probe sealing cavity structure according to the present invention;

[0016] Figure 2 The figure shows a partially enlarged schematic diagram of the internal structure of an improved probe sealing cavity structure according to the present invention;

[0017] Figure 3 The figure shows a schematic diagram of the working principle of an improved probe sealing cavity structure described in the present invention.

[0018] Explanation of the numbers in the accompanying drawings: 1. Probe; 2. Locking spring; 3. Locking nut; 4. Compression nut; 5. Limit nut; 6. Compression ring; 7. Sealing cavity; 8. Flange short circuit; 9. Sealing ring; 10. Pipeline; 11. Probe electrode. DETAILED DESCRIPTION

[0019] In order to solve at least one of the above problems, the present invention provides an improved probe sealing cavity structure. Figure 1-Figure 3 As shown, the sealed chamber structure includes: a probe 1, a locking spring 2, a locking nut 3, a compression nut 4, a limit nut 5, a pressure ring 6, a sealing chamber 7, a flange short circuit 8, a sealing ring 9, and a probe electrode installed at one end of the probe 1. After the probe 1 passes through the locking nut 3, compression nut 4, pressure ring 6, sealing ring 9, sealing chamber 7, and the extraction device of the flange short circuit 8 in sequence, one end of the probe 1 with the probe electrode 11 extends into the interior of the pipe 10 and is fixed by the locking nut 3.

[0020] The pipe 10 is provided with a connection and extraction device for the flange short-circuit 8, through which the probe 1 can be extended into the interior of the pipe; one end of the outer side of the flange short-circuit 8 is processed with an external thread that matches the internal thread at the lower end of the sealing cavity 7. The lower end of the sealing cavity 7 is threadedly connected to the flange short-circuit 8 and tightened, and a sealing effect is achieved by using raw tape or sealant between the threads. A sealing groove is provided inside the sealing cavity 7, and a number of sealing rings 9 are placed in the sealing groove by longitudinal and lateral installation so that after being pressurized, many tortuous chambers are formed in the sealing cavity 7 to reduce leakage. The sealing groove structure of the sealing cavity 7 can be rectangular, triangular, or other shapes. The degree of compression between the several sealing rings 9 is controlled by tightening the compression nut 4 to drive the pressure ring 6 so that the sealing ring 9 undergoes elastic deformation and expansion in the radial direction, and the axial tight fit with the specially constructed sealing cavity structure produces a tortuous path. The upper and lower surfaces of the pressure ring 6 can be set to be flat, conical or concave-convex surfaces; preferably, the upper surface of the pressure ring 6 is consistent with the compression surface of the clamping nut 4 and forms good contact; the lower surface of the pressure ring 6 adopts a structural form that matches the surface of the sealing ring 9. In addition, the limiting nut 5 is thread-matched with the clamping nut 4. On the one hand, the degree of compression of the clamping nut 4 on the sealing ring 9 can be adjusted by adjusting the height of the limiting nut 5. On the other hand, the limiting nut 5 has the function of tightening the clamping nut 4. The upper end of the clamping nut 4 is thread-matched with the locking nut 3, and the locking spring 2 is concentrically placed inside the locking nut 3. When the rotating locking nut 3 is matched with the clamping nut 4, the locking spring 2 is prompted to move downward and can wrap the probe 1 inward.

[0021] Example 1: First, a flange short-circuit 8 outlet device that matches the probe system is pre-installed on the pipeline 10. Before the sealing cavity 7 and the flange short-circuit 8 are matched and installed, an appropriate amount of raw tape must be wrapped around the thread or an appropriate amount of sealant must be applied before installation. After installation, the valve on the outlet device must be opened to ensure that the threads at the flange short-circuit 8 do not leak. First, slowly loosen the clamping nut 4, and then loosen the locking nut 3 until the medium in the pipeline 10 does not leak from the threads of the clamping nut 4 and the locking nut 3, and the probe 1 can just be pressed into the interior of the pipeline 10. After the probe 1 is installed in place, first tighten the clamping nut 4, then tighten the locking nut 3, and finally fix the limit nut 5 to complete the installation.

[0022] Due to pressure rating and sealing requirements, increases in the internal pressure of pipeline 10 can affect the sealing performance of the probe system, thereby affecting operational stability and reliability. The compression seal structure of the probe 1 inserted into pipeline 10 can adapt to large fluctuations in internal pipeline pressure by cooperating with the compression nut 4, lock nut 3, limit nut 5, and sealing ring 9 to ensure its sealing performance.

[0023] It should be noted that the combination of the various technical features in the embodiments of the present invention is not limited to the combination described in the embodiments of the present invention or the combination described in the specific embodiments. All technical features described in the present invention can be freely combined or combined in any way unless there is a contradiction between them.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An improved probe sealing cavity structure, characterized in that: The sealing cavity structure comprises: a probe (1), a sealing cavity (7), a locking element and a connecting element; the upper end of the compression nut (4) is matched with the locking nut (3) through a thread, and when the locking nut (3) is rotated to match and connect with the compression nut (4), the locking spring (2) is caused to shrink and wrap the probe (1), and the other end of the compression nut (4) is connected to one end of the sealing cavity (7); the compression ring (6) and the sealing ring (9) are pressed down by the compression nut (4), and then the compression nut (4) is tightened by the limit nut (5); a flange short-circuit (8) connection device is installed on the pipeline (10), and the end of the probe (1) enters the interior of the pipeline (10) through the sealing cavity (7) and the flange short-circuit (8) connection device.

2. The improved probe sealing cavity structure according to claim 1, characterized in that: One end of the flange short-circuit (8) is processed with an external thread structure, and one end inside the sealing cavity (7) is provided with an internal thread structure matching the flange short-circuit (8).

3. The improved probe sealing cavity structure according to claim 2, characterized in that: The sealing cavity (7) and the flange short-circuit (8) can be sealed at the thread by using raw tape or sealant.

4. The improved probe sealing cavity structure according to claim 1, characterized in that: The limiting nut (5) is internally processed with a thread structure that matches the external thread of the clamping nut (4), and the degree of compression of the clamping nut (4) on the sealing ring (9) can be changed by adjusting the height of the limiting nut (5).

5. The improved probe sealing cavity structure according to claim 1, characterized in that: The main sealing structure portion of the sealing cavity (7) is a sealing groove for accommodating a sealing ring (9), and the sealing groove structure can be rectangular or triangular.

6. The improved probe sealing cavity structure according to claim 1, characterized in that: The sealing ring (9) is a sealing filler, has a circular ring structure and has a certain elastic deformation capability.

7. The improved probe sealing cavity structure according to claim 1, characterized in that: The sealing ring (9) can be provided as one or more rings.

8. The improved probe sealing cavity structure according to claim 1, characterized in that: One end of the probe (1) entering the pipeline (10) is provided with a probe electrode (11).

9. An improved probe sealing cavity structure according to any one of claims 1 to 8, characterized in that: The probe (1), the locking spring (2), the locking nut (3), the pressing nut (4), the limiting nut (5), the sealing cavity (7) and the flange short circuit (8) are made of stainless steel.

Images