Flange closure device

Abstract

The utility model discloses a kind of flange sealing devices, belong to industrial pipeline technical field, including plug, plug is set as "disc" type, the linkage assembly that plug upper side is provided with can be clamped to flange plate, plug surface is provided with sliding slot, sliding slot quantity is three, it is equilateral triangle distribution, sliding slot inside is slidably connected with slider, slider top rotatably connected with connecting rod, slider bottom extends support piece, one side of support piece is provided with single-acting cylinder, the telescopic rod top of single-acting cylinder is fixedly installed with force element.The utility model is under the linkage action of connecting rod, slider is slid in sliding slot inside, and then make three groups of support piece synchronous movement, contact with flange plate, this setting guarantees the consistency of three groups of support piece movement, so that plug and flange plate center point are located on a straight line, improve subsequent sealing rubber gasket, rubber elastic air bag effect stress uniformity, indirectly improve the sealing of device.

Description

Technical Field

[0001] This utility model belongs to the field of industrial pipeline technology, specifically a flange sealing device. Background Technology

[0002] Within the factory area, pipelines can be considered the blood vessels of industrial production, carrying out various needs such as media transportation and energy supply. After the pipeline is installed, it needs to be pressure tested. The pressure test involves sealing a section of the pipeline and then passing water at a certain pressure to see if the pipeline connections can withstand this high pressure without leakage.

[0003] As is well known, during pipeline construction, not only should joints be reserved, but also some vents should be reserved at the top of the pipeline. These vents are used to release uneven air pressure inside the pipeline. They are generally located at the highest point of the pipeline. The vents are usually connected to flanges above them, and are connected to check valves or pressure gauges through the flanges. Therefore, the flanges need to be sealed during the pressure test.

[0004] Existing sealing structures generally use flange-type plugs, connecting the plug to the flange through corresponding holes. While this achieves a sealing effect, the operation is cumbersome, requiring at least ten sets of bolts between the flanges. A gasket also needs to be placed between the flange and the plug, ensuring its centering and even stress distribution; otherwise, leakage will occur. Therefore, this paper proposes to improve the connection method to increase convenience while further ensuring the sealing performance and enhancing practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a flange sealing device in order to solve the above-mentioned problems.

[0006] The technical solution adopted by this utility model is as follows: a flange sealing device, including a plug, the plug being arranged in a "disc" shape, and a linkage component that can clamp the flange being arranged above the plug;

[0007] The linkage components include: slide groove, central column, threaded groove, sliding sleeve, lead screw, slider, connecting rod, support component, single-acting cylinder, and force-bearing component;

[0008] The surface of the plug is provided with a sliding groove. There are three sliding grooves arranged in an equilateral triangle. A slider is slidably connected inside each sliding groove. A connecting rod is rotatably connected to the top of the slider. A support extends from the bottom of the slider. A single-acting cylinder is provided on one side of the support. A force-bearing component is fixedly installed on the top of the telescopic rod of the single-acting cylinder.

[0009] The top of the plug is integrally provided with a central column at the center, the end face of the central column is integrally provided with a threaded groove, the outside of the central column is slidably connected to a sliding sleeve, and the inside of the sliding sleeve is rotatably connected to a lead screw;

[0010] A sealing component is provided below the plug to seal the flange.

[0011] The sealing assembly includes: a sealing gasket, an extension column, and a rubber elastic airbag; the bottom of the plug is integrally provided with an extension column at the center, the extension column is tightly fitted with a rubber elastic airbag, and the bottom of the plug is tightly fitted with a sealing gasket between the extension column and the groove.

[0012] An extended valve stem is connected to the inlet and outlet of the single-acting cylinder, and an air inlet is embedded above the plug.

[0013] The inflation nozzle is connected to the rubber elastic airbag via a pipe, and the other side of the connecting rod is rotatably connected to the outer wall of the sliding sleeve.

[0014] The lead screw extends into the center column and is threadedly connected to the threaded groove.

[0015] The support member is L-shaped.

[0016] The extended valve stem and the inflation valve are both national standard valve stems of the same specification.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, under the linkage action of the connecting rod, the slider is driven to slide inside the slide groove, thereby enabling the three sets of support members to move synchronously and contact the flange. This setting ensures the consistency of movement of the three sets of support members, so that the plug and the center point of the flange are on a straight line, which improves the uniformity of force on the subsequent sealing gasket and rubber elastic airbag, and indirectly improves the sealing performance of the device. At the same time, this setting is convenient to operate, flexible to use, and can be used with flanges of different specifications.

[0019] 2. In this utility model, the reaction force is first used to make the sealing gasket adhere to the upper edge of the flange. Then, the rated gas is filled into the rubber elastic air bag, causing the rubber elastic air bag to expand and seal with the pipeline, thereby achieving the purpose of sealing. Subsequently, the pipeline is pressure tested. This device improves the sealing performance of the device for the flange by using double sealing. Attached Figure Description

[0020] Figure 1 This is a simplified schematic diagram of the three-dimensional structure of this utility model;

[0021] Figure 2 This is a simplified schematic diagram of the exploded three-dimensional structure of this utility model;

[0022] Figure 3 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention;

[0023] Figure 4 This is a simplified schematic diagram of the planar structure in this utility model.

[0024] The markings in the diagram are: 1. Plug; 101. Slide groove; 102. Sealing gasket; 2. Center column; 201. Threaded groove; 3. Sliding sleeve; 301. Lead screw; 4. Slider; 401. Connecting rod; 5. Extension column; 501. Rubber elastic air bag; 6. Support component; 601. Single-acting cylinder; 602. Force-bearing component; 7. Extended valve; 8. Inflation nozzle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0026] In this utility model:

[0027] Reference Figures 1-4 A flange sealing device includes a plug 1, which is arranged in a "disc" shape, and a linkage component that can clamp the flange is arranged above the plug 1.

[0028] The linkage components include: slide groove 101, center column 2, threaded groove 201, sliding sleeve 3, lead screw 301, slider 4, connecting rod 401, support 6, single-acting cylinder 601, and force-bearing component 602;

[0029] The surface of the plug 1 is provided with three sliding grooves 101 arranged in an equilateral triangle. Each sliding groove 101 is slidably connected to a slider 4. The top of the slider 4 is rotatably connected to a connecting rod 401. The bottom of the slider 4 extends to a support member 6. A single-acting cylinder 601 is provided on one side of the support member 6. A force-bearing member 602 is fixedly installed on the top of the telescopic rod of the single-acting cylinder 601. The support member 6 is "L" shaped. This arrangement facilitates the extension of the single-acting cylinder 601 to the bottom of the flange. By utilizing the telescopic nature of the single-acting cylinder 601, it acts with the lower edge of the flange. The reaction force connects the sealing gasket 102 to the flange, increasing the sealing performance. The double sealing performance improves the sealing performance of the device for the flange.

[0030] The top of the plug 1 is integrated with a central column 2 at the center. The end face of the central column 2 is integrated with a threaded groove 201. The central column 2 is slidably connected to a sliding sleeve 3. The sliding sleeve 3 is rotatably connected to a lead screw 301. The other side of the connecting rod 401 is rotatably connected to the outer wall of the sliding sleeve 3. The lead screw 301 extends into the interior of the central column 2 and is threadedly connected to the threaded groove 201. By rotating the handle at the top of the lead screw 301, the threaded action between the lead screw 301 and the threaded groove 201 can be achieved, thereby driving the sliding sleeve 3 and the central column 2 to slide up and down. At the same time, under the linkage action of the connecting rod 401, the slider 4 is driven to slide inside the sliding groove 101, thereby causing the three sets of support members 6 to move synchronously and act with the lower edge of the flange, thus facilitating the connection between the sealing gasket 102 and the flange, while ensuring the uniformity of the seal.

[0031] A sealing component is provided below the plug 1 to seal the flange;

[0032] The sealing assembly includes: a sealing gasket 102, an extension column 5, and a rubber elastic airbag 501;

[0033] The bottom of the plug 1 is integrated with an extension column 5 at the center. A rubber elastic airbag 501 is tightly attached to the outside of the extension column 5. A sealing gasket 102 is tightly attached between the extension column 5 and the slide groove 101 at the bottom of the plug 1.

[0034] An extended valve stem 7 is connected to the inlet and outlet of the single-acting cylinder 601. An inflation nozzle 8 is embedded above the plug 1. The inflation nozzle 8 is connected to the rubber elastic airbag 501 through a pipe. The air nozzle 8 is connected to the nozzle of the vehicle-mounted air pump. Then, the rated air pressure is set, and the vehicle-mounted air pump will inflate the rubber elastic airbag 501 with the rated gas, thereby causing the rubber elastic airbag 501 to expand and seal with the pipe, thus achieving the purpose of sealing.

[0035] Furthermore, both the extended valve stem 7 and the inflation nozzle 8 are national standard valve stems of the same specification. The valve stem of the vehicle-mounted air pump can be connected to the extended valve stem 7 and the inflation nozzle 8, which is convenient to use. At the same time, the vehicle-mounted air pump is portable and has a built-in CNC pressure component, which can inflate the single-acting cylinder 601 and the rubber elastic air bag 501 with the rated air pressure, making it convenient to use.

[0036] Working principle: First, place the plug 1 above the flange. By rotating the handle at the top of the screw 301, the screw 301 and the threaded groove 201 engage, causing the sliding sleeve 3 and the central column 2 to slide up and down. Simultaneously, under the linkage of the connecting rod 401, the slider 4 slides inside the groove 101, causing the three sets of support members 6 to move synchronously and contact the flange. This setting ensures the consistency of movement of the three sets of support members 6, making the plug 1 and the center point of the flange aligned, improving the uniformity of force distribution on the subsequent sealing gasket 102 and rubber elastic airbag 501. Then, using the vehicle-mounted... The air pump's nozzle can be connected to the extended valve 7 and the inflation nozzle 8. The vehicle-mounted air pump is portable and features a built-in CNC pressure assembly. It can inflate the single-acting cylinder 601 and the rubber elastic airbag 501 with the rated air pressure. First, the extension of the single-acting cylinder 601 acts against the lower edge of the flange, using the reaction force to make the sealing gasket 102 adhere to the upper edge of the flange. Then, the rated gas is inflated into the rubber elastic airbag 501, causing it to expand and seal against the pipeline, thus achieving a seal. Subsequent pressure testing of the pipeline is then performed. This device utilizes a double seal to improve the sealing performance of the device against the flange.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flange sealing device, comprising a plug (1), characterized in that: The plug (1) is arranged in a "disc" shape, and a linkage component that can clamp the flange is provided above the plug (1); The linkage components include: slide groove (101), center column (2), threaded groove (201), sliding sleeve (3), lead screw (301), slider (4), connecting rod (401), support (6), single-acting cylinder (601), and force-bearing component (602); The surface of the plug (1) is provided with a sliding groove (101). There are three sliding grooves (101) in an equilateral triangle. A slider (4) is slidably connected inside each sliding groove (101). A connecting rod (401) is rotatably connected to the top of the slider (4). A support member (6) extends from the bottom of the slider (4). A single-acting cylinder (601) is provided on one side of the support member (6). A force-bearing member (602) is fixedly installed on the top of the telescopic rod of the single-acting cylinder (601). The top of the plug (1) is integrally provided with a central column (2) at the center of the circle. The end face of the central column (2) is integrally provided with a threaded groove (201). The central column (2) is slidably connected to a sliding sleeve (3) on the outside. The sliding sleeve (3) is rotatably connected to a lead screw (301) inside. A sealing assembly capable of sealing the flange is provided below the plug (1); The sealing assembly includes: a sealing gasket (102), an extension column (5), and a rubber elastic airbag (501); The plug (1) has an extension column (5) integrated at the center of the bottom. The extension column (5) is tightly fitted with a rubber elastic airbag (501). The plug (1) has a sealing gasket (102) tightly fitted between the extension column (5) and the slide groove (101). The single-acting cylinder (601) has an extended valve (7) connected to its inlet and outlet ports, and an air inlet (8) is embedded above the plug (1).

2. The flange sealing device as described in claim 1, characterized in that: The inflation nozzle (8) is connected to the rubber elastic airbag (501) through a pipe.

3. The flange sealing device as described in claim 1, characterized in that: The other side of the connecting rod (401) is rotatably connected to the outer wall of the sliding sleeve (3).

4. A flange sealing device as described in claim 1, characterized in that: The lead screw (301) extends into the center column (2) and is threadedly connected to the threaded groove (201).

5. A flange sealing device as described in claim 1, characterized in that: The support member (6) is L-shaped.

6. A flange sealing device as described in claim 1, characterized in that: The extended valve (7) and the inflation valve (8) are both national standard valves of the same specification.

Images