A liquid level gauge conduit unblocker

Abstract

This utility model relates to the field of liquid level gauge maintenance technology, and in particular to a clearing device for liquid level gauge pipelines. It includes a flange and a guide rod. A through hole is provided at the center of the flange, and a connecting pipe is installed inside the through hole. The guide rod is inserted through and connected to the connecting pipe. A crossbar is fixedly installed at one end of the guide rod, and the other end of the guide rod is the clearing end. A sealing component is provided between the guide rod and the connecting pipe. The clearing device for liquid level gauge pipelines provided by this utility model fixes the flange to the inspection port. The crossbar reciprocates to push the guide rod to clear the blockage. After the blockage is cleared, high-temperature steam is blocked by the flange inside the equipment, thereby preventing burns to the user from the high-temperature gas, ensuring a safe working environment for the user, and eliminating safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of liquid level gauge maintenance technology, and in particular to a dredging device for liquid level gauge pipelines. Background Technology

[0002] Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids. It mainly refers to polyethylene terephthalate, and also includes linear thermoplastic resins such as polybutylene terephthalate (PBT) and polyarylates. It is a class of engineering plastics with excellent performance and wide application. It can also be made into polyester fibers and polyester films.

[0003] The air-blowing level gauge reflects the liquid level by measuring changes in the pressure of the blown-in gas. It is commonly used for level monitoring in esterification and polycondensation reactors in polyester plants. Its working principle is based on the change in pressure of gas as it propagates through a liquid, which is achieved by calculating the relationship between gas pressure and liquid level. This method is characterized by convenient installation and simple maintenance, but attention must be paid to the possibility of blockage in the air-blowing pipe.

[0004] When the level gauge becomes clogged, workers need to use a lance to clear the blockage. However, after clearing the blockage, high-temperature steam inside the equipment is ejected through the lance. The powerful impact can not only tear skin tissue directly, but also cause deep burns due to the heat released by the condensation of steam, thus posing a safety hazard. Utility Model Content

[0005] To address the aforementioned technical deficiencies, this invention provides a dredging device for level gauge pipelines, which effectively protects against the jetting of high-temperature steam during the dredging process and offers high safety in use.

[0006] This utility model discloses a dredging device for a liquid level gauge pipeline, including a flange and a guide rod. A through hole is provided at the center of the flange, and a connecting pipe is provided inside the through hole. The guide rod is inserted through the connecting pipe. A crossbar is fixedly provided at one end of the guide rod, and the other end of the guide rod is the dredging end. A sealing assembly is provided between the guide rod and the connecting pipe. A limit plate is provided on the outer wall of the connecting pipe near the crossbar end. A fixing plate is provided at one end of the crossbar. Both the fixing plate and the limit plate are provided with connecting holes. A ring is provided in each connecting hole, and two rings are connected by an iron chain.

[0007] The sealing assembly has the following structure: it includes a connecting collar, the outer wall of which is threadedly connected to the inner wall of the connecting tube, and a guide rod located inside the connecting collar and slidably connected to it. A receiving groove is provided inside the connecting collar at one end of the connecting tube; the receiving groove has a conical structure. A bottom ring is fixedly installed inside the connecting tube. A support ring is installed inside the connecting tube between the bottom ring and the connecting collar. A sealing ring is installed inside the connecting tube between the support ring and the connecting collar. The shape of the sealing ring matches the receiving groove. The connecting collar, sealing ring, support ring, and bottom ring are all sleeved on the outside of the guide rod.

[0008] To prevent the guide rod from damaging the equipment during the pipe clearing process, the clearing end of the guide rod has a rounded surface structure.

[0009] To improve the connection strength between the connecting pipe and the flange, an annular plate is installed on the outer wall of the connecting pipe near the unblocking end.

[0010] The present invention provides a level gauge pipeline unblocking device. By setting up a flange, a guide rod, and a sealing component, before unblocking the blockage, the operator fixes the flange to the inspection port, and then pushes the guide rod back and forth with a crossbar to unblock the blockage. After the blockage is unblocked, the high-temperature steam and liquid are blocked by the flange inside the equipment, thereby preventing the high-temperature gas from scalding the user, ensuring the safety of the user's working environment, and eliminating safety hazards. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0014] Figure 4 for Figure 1 A magnified view of a portion of point C in the middle;

[0015] Figure 5 for Figure 1 A magnified view of a portion of point B in the middle;

[0016] Figure 6 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] Example 1:

[0020] like Figures 1-7 As shown, this utility model discloses a dredging device for a level gauge pipeline, including a flange 1 and a guide rod 6. A through hole 2 is provided at the center of the flange 1, and a connecting pipe 3 is provided inside the through hole 2. The guide rod 6 is inserted through the connecting pipe 3. A crossbar 8 is fixedly provided at one end of the guide rod 6, and the other end of the guide rod 6 is a dredging end 13. A sealing assembly 7 is provided between the connecting pipe 3 and the guide rod 6. A limiting plate 4 is provided on the outer wall of the connecting pipe 3 near the crossbar 8. A fixing plate 9 is provided at one end of the crossbar 8. Both the fixing plate 9 and the limiting plate 4 are provided with connecting holes 10. A ring 11 is provided in each connecting hole 10, and the two rings 11 are connected by an iron chain 12.

[0021] When a blockage occurs in the level gauge pipeline, this unblocking device is needed to clear the blockage. The specific operation process is as follows: Open the inspection port of the pressure tap of the esterification reactor and fix the flange 1 to the inspection port with bolts. Of course, the model and size of the flange 1 should match the inspection port. Insert the unblocking end 13 of the guide rod 6 into the corresponding level gauge pipeline, and push the guide rod 6 back and forth with the crossbar 8 to clear the blockage inside the pipeline. After unblocking, the high-temperature steam in the esterification reactor sprays out into the pipeline. Under the obstruction of the flange 1, the high-temperature steam is blocked in the esterification reactor and pipeline. At the same time, the sealing component 7 can be used to seal the gap between the connecting pipe 3 and the guide rod 6, thereby preventing the high-temperature steam from spraying out through the gap between the guide rod 6 and the connecting pipe 3, thus ensuring the operating environment of the staff. In addition, after unblocking, because the esterification vessel is in a sealed state and the internal pressure is relatively high, the internal pressure will act on the guide rod 6 after unblocking the pipe, which will push the guide rod 6 outward. At this time, the guide rod 6 is prone to being ejected outward. Therefore, an iron chain 12 is set between the limiting plate 4 of the connecting pipe 3 and the fixing plate 9 of the crossbar 8 through the ring 11, which can effectively limit the maximum running distance of the guide rod 6 and prevent the guide rod 6 from completely coming out of the connecting pipe 3, greatly improving the safety during the operation.

[0022] like Figure 6 , Figure 7As shown, the sealing assembly 7 has the following structure: it includes a connecting collar 701, the outer wall of which is threadedly connected to the inner wall of the connecting pipe 3, and the guide rod 6 is located inside the connecting collar 701 and slidably connected to it. A receiving groove 702 is provided inside the connecting collar 701 located inside the connecting pipe 3. The receiving groove 702 has a conical structure. A bottom ring 704 is fixedly provided inside the connecting pipe 3. A support ring 705 is provided inside the connecting pipe 3 between the bottom ring 704 and the connecting collar 701. A sealing ring 703 is provided inside the connecting pipe 3 between the support ring 705 and the connecting collar 701. The shape of the sealing ring 703 matches the receiving groove 702. The connecting collar 701, sealing ring 703, support ring 705, and bottom ring 704 are all sleeved on the outside of the guide rod 6.

[0023] The channels inside the connecting collar 701, sealing ring 703, support ring 705, and bottom ring 704 are all slidably connected to the guide rod 6. A receiving groove 702 is provided at one inner end of the connecting collar 701. The receiving groove 702 has a conical structure; that is, the inner wall of the end of the connecting collar 701 located inside the connecting pipe 3 is an inclined surface, and the wall thickness gradually decreases from the middle of the connecting collar 701 downwards, forming an annular receiving groove 702. The outer wall of the sealing ring 703 is also an inclined surface, and its wall thickness gradually decreases from bottom to top. It interlocks with the receiving groove 702 on the connecting collar 701 for sealing. The support ring 705 supports the sealing ring 703, while the bottom ring 704 restricts the running distance of the support ring 705 and the sealing ring 703. During high-temperature steam injection, the high-temperature steam drives the support plate to move, compressing the sealing ring 703. This causes the sealing ring 703 to fill the gap 702 between the guide rod 6 and the connecting sleeve 701, thus achieving a seal between the connecting sleeve 701 and the guide rod 6 and preventing high-temperature steam from being ejected to the outside and posing a safety hazard to workers. When the guide rod 6 reciprocates to clear blockages, the connecting pipe 3 and the bottom ring 704 support and guide the guide rod 6, preventing damage to the pipeline. The connecting sleeve 701 and the connecting pipe 3 are connected by threads, facilitating disassembly and replacement and maintenance of the internal sealing ring 703 and support ring 705.

[0024] To prevent the guide rod 6 from damaging the equipment during pipe unblocking, the unblocking end 13 of the guide rod 6 has an arc-shaped structure. The arc-shaped structure and the rod body of the guide rod 6 form a smooth transition, minimizing damage to the pipe when unblocking blockages.

[0025] To enhance the connection strength between the connecting pipe 3 and the flange, an annular plate 5 is installed on the outer wall of the connecting pipe 3 near the unblocking end 13. Normally, the flange 1 is connected to one end of the connecting pipe 3, but this connection method is prone to safety hazards such as detachment. Therefore, an annular plate 5 is installed at the end of the connecting pipe 3. The annular plate 5 is fixedly connected to both the flange 1 and the connecting pipe 3, increasing the connection area between the connecting pipe 3 and the flange 1 and improving the connection strength. If a flat lower surface of the flange 1 is required when connecting the inspection port to the flange 1, an annular groove can be made on the lower surface of the flange 1 according to the shape and size of the annular plate 5, and the annular plate 5 can be embedded inside the flange 1.

[0026] Working principle: When using the equipment to unclog the pressure tap of the esterification reactor, open the inspection port, fix the flange 1 to the inspection port with bolts, and push the guide rod 6 back and forth by the crossbar 8. The guide rod 6 unclogs the blockage in the pipeline inside the pressure tap. After unblocking, high-temperature steam is sprayed out and enters the pipeline. The flange 1 seals the high-temperature steam inside the esterification reactor. At the same time, the sealing component 7 is tightly attached to the guide rod 6 to prevent the high-temperature steam from leaving the equipment through the gap between the guide rod 6 and the connecting pipe 3, thereby ensuring the operating environment for the staff. When high-temperature steam is injected, the high-temperature steam drives the support ring 705 to squeeze the sealing ring 703, so that the sealing ring 703 fills the gap between the guide rod 6 and the receiving groove 702. When the guide rod 6 clears the blockage, the connecting pipe 3 and the bottom ring 704 provide support for the guide rod 6 and guide it. When maintaining the sealing assembly 7, the connecting sleeve 701 is rotated to disengage the connecting sleeve 701 from the connecting pipe 3, thereby realizing the replacement and maintenance of the sealing ring 703 and the support ring 705.

[0027] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simplification, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A device for unblocking a liquid level gauge pipeline, characterized in that: The device includes a flange and a guide rod. A through hole is provided at the center of the flange, and a connecting pipe is installed inside the through hole. The guide rod is inserted through the connecting pipe. A crossbar is fixedly installed at one end of the guide rod, and the other end of the guide rod is a drainage end. A sealing assembly is provided between the guide rod and the connecting pipe. A limit plate is provided on the outer wall of the connecting pipe near the crossbar. A fixing plate is provided at one end of the crossbar. Both the fixing plate and the limit plate have connecting holes, and a ring is provided in each connecting hole. Two rings are connected by an iron chain.

2. The unblocking device for a liquid level gauge pipeline according to claim 1, characterized in that: The sealing assembly has the following structure: it includes a connecting collar, the outer wall of which is threadedly connected to the inner wall of the connecting tube, and a guide rod located inside the connecting collar and slidably connected to it. A receiving groove is provided inside the connecting collar at one end of the connecting tube; the receiving groove has a conical structure. A bottom ring is fixedly installed inside the connecting tube. A support ring is installed inside the connecting tube between the bottom ring and the connecting collar. A sealing ring is installed inside the connecting tube between the support ring and the connecting collar. The shape of the sealing ring matches the receiving groove. The connecting collar, sealing ring, support ring, and bottom ring are all sleeved on the outside of the guide rod.

3. The unblocking device for a level gauge pipeline according to claim 1, characterized in that: The unblocking end of the guide rod has a circular arc surface structure.

4. The unblocking device for a level gauge pipeline according to claim 1, characterized in that: A ring plate is installed on the outer wall of the connecting pipe near the unblocking end.

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