Anti-corrosion and anti-explosion device for metal pipeline valve flange
By designing the upper cover, lower cover and thin pipe structure in the metal pipe valve flange, the rapid diffusion of inert gas is achieved, the problem of slow gas diffusion is solved, and the screw disassembly is simplified through the gap connection screw, improving the anti-corrosion treatment. Efficiency and convenience.
Patent Information
- Application Number
- CN202421141391.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-23
AI Technical Summary
When the existing metal pipe valve flanges use inert gas in corrosion protection, the gas diffuses slowly, resulting in an increase in usage, and the connecting screws are difficult to disassemble after corrosion, resulting in inconvenience.
A structure including an upper cover, a lower cover, an upper half-circle sleeve, a lower half-circle sleeve, a partition sleeve and a thin tube is designed. The inert gas is quickly diffused into the upper cover and the lower cover space through the thin tube, and a gap is used to connect the screws to facilitate Demolition later.
The rapid diffusion of inert gas is achieved, the gas usage is reduced, and the screw removal process after corrosion is simplified through gap design.
Smart Images
Figure CN222255219U_ABST
Abstract
Description
Technical Field
[0001] The utility model is an anti-corrosion and anti-explosion device for a metal pipeline valve flange, belonging to the technical field of pipelines. Background Art
[0002] Pipeline corrosion can lead to unplanned maintenance, replacement and unplanned shutdown of pipeline equipment, resulting in direct and indirect economic losses. Severe local corrosion can easily cause pipeline perforation and leakage accidents, which will not only pollute the environment, but also cause explosions and fires. Therefore, effective anti-corrosion treatment should be taken on pipeline valve flanges as soon as possible to prevent them from happening. By hiding the part where the metal pipe is connected to the ball valve in the closed space formed by the upper cover and the lower cover, there will be some air in the space formed by the upper cover and the lower cover. In order to discharge the residual air in the space formed by the upper cover and the lower cover, inert gas is usually injected into the space formed by the upper cover and the lower cover, so that the residual air is discharged with the inert gas. Because there is generally an air outlet on the surface of the space formed by the upper cover and the lower cover, it takes more time to fill the space formed by the upper cover and the lower cover with inert gas, so that the residual air in the space formed by the upper cover and the lower cover is completely discharged, and the amount of inert gas consumed is relatively large. Utility Model Content
[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an anti-corrosion and anti-explosion device for metal pipe valve flanges to solve the problems raised in the above-mentioned background technology. The utility model allows the inert gas to quickly diffuse into the space formed by the upper cover and the lower cover, thereby reducing the amount of inert gas used.
[0004] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme: an anti-corrosion and anti-explosion device for a metal pipeline valve flange, comprising a ball valve, both ends of the ball valve are connected and fixed with a metal pipe through a flange connection, the ball valve is arranged in a space formed by an upper cover and a lower cover, the lower positions of the two parallel side surfaces of the upper cover are connected and fixed with an upper semicircular sleeve, the lower side of the upper semicircular sleeve is provided with a lower semicircular sleeve, the lower semicircular sleeve is connected and fixed with the lower cover, the metal pipe is inserted in the space formed by the upper semicircular sleeve and the lower semicircular sleeve, the upper cover is connected and fixed with the lower cover through a connecting piece, an interpenetration hole is opened on the upper surface of the upper cover, the valve stem on the ball valve passes through the interpenetration hole, the upper end of the valve stem is connected and fixed with a hand wheel disc, the lower surface of the lower cover is installed with a first stop valve for connecting the gas outlet end of the inert gas tank, the upper position of one side surface of the upper cover is installed with a second stop valve, the lower position of the lower cover is installed with a partition cover, the lower end of the partition cover is open, and a plurality of thin tubes are evenly installed on the upper surface of the partition cover.
[0005] Furthermore, the connecting member includes an upper connecting plate, and the lower positions of the two side surfaces where the upper cover is connected to the upper semicircular sleeve are both connected and fixed with upper connecting plates, and a lower connecting plate is provided on the lower side of the upper connecting plate with a gap therebetween, and the lower connecting plate is connected and fixed to the lower cover, and a plurality of upper small holes are evenly provided on the upper surface of the upper connecting plate, and a plurality of lower small holes aligned with the upper small holes are evenly provided on the upper surface of the lower connecting plate, and connecting screws are inserted in the channel formed by the upper small holes and the lower small holes, and nuts are threadedly connected to the upper ends of the connecting screws.
[0006] Furthermore, a plurality of first reinforcing ribs are evenly fixed on the upper surface of the upper connecting plate, and the first reinforcing ribs are connected and fixed to the upper cover, and a plurality of second reinforcing ribs are evenly fixed on the lower surface of the lower connecting plate, and the second reinforcing ribs are connected and fixed to the lower cover.
[0007] Furthermore, an upper arc pad is pasted in the upper semicircular sleeve, and a lower arc pad is pasted in the lower semicircular sleeve, and both the upper arc pad and the lower arc pad are in contact with the surface of the metal tube.
[0008] Furthermore, a supporting frame is connected and fixed to the upper position inside the lower cover, the upper end of the supporting frame is inserted in the upper cover, a sealing strip is provided between the supporting frame and the inner wall of the upper cover, the sealing strip is adhered to the supporting frame, a sealing sleeve is adhered to the inner surface of the through hole, and the sealing sleeve is wrapped around the valve stem.
[0009] Furthermore, a rectangular opening is processed on the upper surface of the upper cover, and explosion-proof glass is inlaid in the rectangular opening.
[0010] Beneficial effects of the utility model:
[0011] 1. Connect the gas outlet of the inert gas tank to the first stop valve, open the first stop valve and the second stop valve, and then the compressed inert gas in the inert gas tank flows into the space formed by the separation cover and the lower cover through the first stop valve, and then the inert gas quickly expands to every corner of the space formed by the upper cover and the lower cover through a plurality of thin tubes, so that the air in the space formed by the upper cover and the lower cover is quickly discharged through the second stop valve, thereby reducing the use of inert gas.
[0012] 2. Use connecting screws and nuts to connect the upper connecting plate and the lower connecting plate. Because there is a gap between the upper connecting plate and the lower connecting plate, part of the connecting screw rod is exposed. When the connecting screws and nuts cannot be removed smoothly with conventional tools due to corrosion, use a hacksaw blade to cut off the connecting screws. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0014] Figure 1This is a schematic diagram of the structure of an anti-corrosion and anti-explosion device for a metal pipeline valve flange according to the utility model;
[0015] Figure 2 It is a schematic diagram of the assembly of a metal pipe and a valve in an anti-corrosion and anti-explosion device for a metal pipeline valve flange of the utility model;
[0016] Figure 3 It is a schematic diagram of the assembly of a separation cover, an upper cover and a lower cover in an anti-corrosion and anti-explosion device for a metal pipeline valve flange according to the utility model;
[0017] In the figure: 1-metal pipe, 2-lower arc pad, 3-lower semicircular sleeve, 4-first stop valve, 5-lower cover, 6-connecting screws, 7-lower connecting plate, 8-upper connecting plate, 9-nut, 10-sealing sleeve, 11-valve stem, 12-hand wheel, 13-explosion-proof glass, 14-second stop valve, 15-upper cover, 16-upper semicircular sleeve, 17-upper arc pad, 18-ball valve, 19-sealing strip, 20-support frame, 21-separation cover, 22-thin tube. DETAILED DESCRIPTION
[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0019] See also Figure 1 and Figure 2 The utility model provides a technical solution: an anti-corrosion and anti-explosion device for a metal pipeline valve flange, comprising a ball valve 18, both ends of the ball valve 18 are fixed with a metal pipe 1 through a flange connection, the ball valve 18 is arranged in a space formed by an upper cover 15 and a lower cover 5, an insertion hole is opened on the upper surface of the upper cover 15, a valve stem 11 on the ball valve 18 passes through the insertion hole, a hand wheel disc 12 is connected and fixed to the upper end of the valve stem 11, a sealing sleeve 10 is pasted on the inner surface of the insertion hole, the sealing sleeve 10 is wrapped on the valve stem 11, and the sealing sleeve 10 improves the sealing between the valve stem 11 and the inner wall of the insertion hole without affecting the movement of the valve stem 11.
[0020] See also Figure 1 and Figure 3, the lower positions of the two parallel side surfaces of the upper cover 15 are both connected and fixed with an upper semicircular sleeve 16, a lower semicircular sleeve 3 is provided on the lower side of the upper semicircular sleeve 16, and the lower semicircular sleeve 3 is connected and fixed to the lower cover 5, the metal tube 1 is inserted in the space formed by the upper semicircular sleeve 16 and the lower semicircular sleeve 3, an upper arc pad 17 is pasted in the upper semicircular sleeve 16, and a lower arc pad 2 is pasted in the lower semicircular sleeve 3, the upper arc pad 17 and the lower arc pad 2 are both fitted with the surface of the metal tube 1, and the design of the upper arc pad 17 and the lower arc pad 2 improves the sealing between the metal tube 1 and the upper semicircular sleeve 16 and the lower semicircular sleeve 3, a supporting frame 20 is connected and fixed at the upper position in the lower cover 5, the upper end of the supporting frame 20 is inserted in the upper cover 15, a sealing strip 19 is provided between the supporting frame 20 and the inner wall of the upper cover 15, and the sealing strip 19 is pasted to the supporting frame 20, and the design of the supporting frame 20 and the sealing strip 19 improves the sealing between the upper cover 15 and the lower cover 5.
[0021] See also Figure 1 The lower positions of the two side surfaces where the upper cover 15 is connected to the upper semicircular sleeve 16 are both connected and fixed with an upper connecting plate 8. A plurality of first reinforcing ribs are evenly fixed on the upper surface of the upper connecting plate 8, so that the first reinforcing ribs are connected and fixed to the upper cover 15, thereby improving the mechanical strength of the connection between the upper connecting plate 8 and the upper cover 15. A lower connecting plate 7 with a gap between the upper connecting plate 8 and the upper connecting plate 8 is provided on the lower side of the upper connecting plate 8. The lower connecting plate 7 is connected and fixed to the lower cover 5. A plurality of second reinforcing ribs are evenly fixed on the lower surface of the lower connecting plate 7, so that the second reinforcing ribs are connected and fixed to the lower cover 5, thereby improving the mechanical strength of the connection between the lower connecting plate 7 and the lower cover 5. A plurality of upper small holes are evenly formed on the upper surface of the plate 8, and a plurality of lower small holes aligned with the upper small holes are evenly formed on the upper surface of the lower connecting plate 7. A connecting screw 6 is inserted in the channel formed by the upper small holes and the lower small holes. A nut 9 is threadedly connected to the upper end of the connecting screw 6. The upper connecting plate 8 and the lower connecting plate 7 are connected by the connecting screw 6 and the nut 9. Since there is a gap between the upper connecting plate 8 and the lower connecting plate 7, a part of the rod of the connecting screw 6 is exposed. When the connecting screw 6 and the nut 9 cannot be smoothly disassembled by conventional tools due to corrosion at a later stage, the connecting screw 6 can be cut off with a hacksaw blade.
[0022] See also Figure 1A first stop valve 4 for connecting the gas outlet of the inert gas tank is installed on the lower surface of the lower cover 5, a second stop valve 14 is installed at the upper position of one side surface of the upper cover 15, and a separation cover 21 is installed at the lower position inside the lower cover 5. The lower end of the separation cover 21 is open, and a plurality of thin tubes 22 are evenly installed on the upper surface of the separation cover 21, so that the gas outlet of the inert gas tank is connected to the first stop valve 4, and the first stop valve 4 and the second stop valve 14 are opened, and then the compressed inert gas in the inert gas tank flows into the space formed by the separation cover 21 and the lower cover 5 through the first stop valve 4, and then the inert gas quickly expands to every corner of the space formed by the upper cover 15 and the lower cover 5 through the plurality of thin tubes 22, so that the air in the space formed by the upper cover 15 and the lower cover 5 is quickly discharged through the second stop valve 14, thereby reducing the use of inert gas. A rectangular opening is processed on the upper surface of the upper cover 15, wherein explosion-proof glass 13 is inlaid in the rectangular opening, and the situation in the space formed by the upper cover 15 and the lower cover 5 can be observed through the explosion-proof glass 13.
[0023] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An anti-corrosion and anti-explosion device for a metal pipeline valve flange, comprising a ball valve (18), characterized in that: Both ends of the ball valve (18) are connected and fixed with a metal pipe (1) via flanges. The ball valve (18) is arranged in a space formed by an upper cover (15) and a lower cover (5). An upper semicircular sleeve (16) is connected and fixed to the lower positions of two parallel side surfaces of the upper cover (15). A lower semicircular sleeve (3) is provided on the lower side of the upper semicircular sleeve (16). The lower semicircular sleeve (3) is connected and fixed to the lower cover (5). The metal pipe (1) is inserted in the space formed by the upper semicircular sleeve (16) and the lower semicircular sleeve (3). The upper cover (15) is connected and fixed to the lower cover (5) via a connecting piece. The upper surface of the upper cover (15) is provided with an insertion hole, the valve stem (11) on the ball valve (18) passes through the insertion hole, the upper end of the valve stem (11) is connected and fixed with a hand wheel (12), the lower surface of the lower cover (5) is provided with a first stop valve (4) for connecting to the gas outlet of the inert gas tank, the upper position of one side surface of the upper cover (15) is provided with a second stop valve (14), the lower position of the lower cover (5) is provided with a partition cover (21), the lower end of the partition cover (21) is open, and the upper surface of the partition cover (21) is evenly provided with a plurality of thin tubes (22).
2. The anti-corrosion and anti-explosion device for metal pipeline valve flange according to claim 1, characterized in that: The connecting member comprises an upper connecting plate (8), the lower parts of the two side surfaces connecting the upper cover (15) and the upper semicircular sleeve (16) are both connected and fixed with the upper connecting plate (8), the lower side of the upper connecting plate (8) is provided with a lower connecting plate (7) with a gap between the upper connecting plate (8), the lower connecting plate (7) is connected and fixed with the lower cover (5), the upper surface of the upper connecting plate (8) is evenly provided with a plurality of upper small holes, the upper surface of the lower connecting plate (7) is evenly provided with a plurality of lower small holes aligned with the upper small holes, a connecting screw (6) is inserted into a channel formed by the upper small holes and the lower small holes, and a nut (9) is threadedly connected to the upper end of the connecting screw (6).
3. The anti-corrosion and anti-explosion device for metal pipeline valve flange according to claim 2, characterized in that: A plurality of first reinforcing ribs are evenly fixed on the upper surface of the upper connecting plate (8), and the first reinforcing ribs are connected and fixed to the upper cover (15). A plurality of second reinforcing ribs are evenly fixed on the lower surface of the lower connecting plate (7), and the second reinforcing ribs are connected and fixed to the lower cover (5).
4. The anti-corrosion and anti-explosion device for metal pipeline valve flange according to claim 1, characterized in that: An upper arc-shaped pad (17) is adhered inside the upper semicircular sleeve (16), and a lower arc-shaped pad (2) is adhered inside the lower semicircular sleeve (3). Both the upper arc-shaped pad (17) and the lower arc-shaped pad (2) are adhered to the surface of the metal tube (1).
5. The anti-corrosion and anti-explosion device for metal pipeline valve flange according to claim 1, characterized in that: A support frame (20) is connected and fixed to the upper position of the lower cover (5), and the upper end of the support frame (20) is inserted into the upper cover (15). A sealing strip (19) is provided between the support frame (20) and the inner wall of the upper cover (15), and the sealing strip (19) is adhered to the support frame (20). A sealing sleeve (10) is adhered to the inner surface of the insertion hole, and the sealing sleeve (10) is wrapped around the valve stem (11).
6. The anti-corrosion and anti-explosion device for metal pipeline valve flange according to claim 1, characterized in that: The upper surface of the upper cover (15) is processed with a rectangular opening, and explosion-proof glass (13) is embedded in the rectangular opening.