Corrosion-resistant and erosion-resistant protection device for parts easy to corrode

Abstract

The utility model discloses a corrosion-resistant and erosion-resistant protection device for an easily-corroded part, and belongs to the technical field of corrosion prevention. Comprising a casing; the sealing gasket sleeves are symmetrically arranged at the two ends of the sleeve shell in a sleeving manner; the closed bottom cylinder can be used for filling inert gas into the sealing sleeve shell and is in threaded connection with one end of the sleeve shell; the closed top cylinder is in threaded connection with the other end of the sleeve shell; the adjusting insertion rod is used for rotating the valve wheel and is hermetically and rotatably connected to one end of the closed top cylinder; and the pressure gauge is used for detecting the pressure change in the sealing sleeve shell and is in threaded connection with one side of the closed top cylinder. The sleeve shell, the sealing gasket sleeve, the closed bottom barrel and the closed top barrel provided with the adjusting inserting rod are installed in a rotating matching mode, the sleeve shell is of a barrel structure and installed outside the valve in a sealed and sleeved mode, anti-corrosion protection is conducted on the whole valve, under the condition that the closed bottom barrel is filled with inert gas, the whole valve is in a stable environment, and the service life of the valve is prolonged. And the whole valve is prevented from being rusted.

Description

Technical Field

[0001] This application relates to the field of anti-corrosion technology, and more specifically, to an anti-corrosion and erosion protection device for easily corroded components. Background Art

[0002] Corrosion and erosion resistance refers to the ability of a material or structure to resist the erosion of corrosive media (such as acids, alkalis, salts, oxidants, etc.) and to withstand wear caused by the impact of liquids, gases, or particles. This property is crucial for many industrial applications, especially in industries such as chemical engineering, offshore engineering, oil extraction, and sewage treatment, because these environments have a continuous corrosive environment and a high wear load.

[0003] The prior art document with the publication (announcement) number CN214248488U provides a protection device for preventing the exposed valve stem of a valve from being corroded in a corrosive environment. In the related technology of this device, the setting of a transparent window avoids the need for slotted openings, enabling the sleeve to completely wrap the valve stem, preventing the valve stem from being exposed. Moreover, the mounting seat can be tightly fixed on the metal rotary control valve through magnetic attraction blocks, and the sealing strip arranged beside the magnetic attraction blocks can well seal the valve stem, thus playing a protective role and effectively solving the problem that the traditional protection device for preventing the exposed valve stem of a valve from being corroded cannot completely prevent the valve stem from being corroded. At the same time, the connection by magnetic attraction makes the disassembly of the device more convenient.

[0004] Although the above prior art solution can achieve related beneficial effects through the structure of the prior art, there are still the following defects: Although the exposed valve stem is protected by the installed sleeve, it cannot ensure that the sleeve can provide a sealing performance for the valve stem during its rotation and use.

[0005] In view of this, we propose an anti-corrosion and erosion protection device for easily corroded components. Summary of the Utility Model

[0006] To improve the problems raised in the above background art, this application provides an anti-corrosion and erosion protection device for easily corroded components.

[0007] The anti-corrosion and erosion protection device for easily corroded components provided by this application adopts the following technical solutions:

[0008] An anti-corrosion and erosion protection device for easily corroded components, comprising:

[0009] A housing;

[0010] Sealing gasket sleeves, symmetrically sleeved at both ends of the housing;

[0011] A closed bottom cylinder capable of filling inert gas into the sealed housing, threadedly connected to one end of the housing;

[0012] A closed top cylinder, threadedly connected to the other end of the housing;

[0013] An adjusting rod for rotating the valve wheel, sealingly and rotatably connected to one end of the closed top cylinder;

[0014] A pressure gauge for detecting the internal pressure change of the sealed housing, threadedly connected to one side of the closed top cylinder.

[0015] By adopting the above technical solution, through the assembled installation of the housing, gasket sleeve, closed bottom cylinder and the closed top cylinder for installing the adjusting rod, the housing is formed into a cylindrical structure and sealingly sleeved outside the valve to provide anti-corrosion protection for the whole valve. With the filling of inert gas in the closed bottom cylinder, the whole valve is in a stable environment, avoiding the rust phenomenon of the whole valve, improving the anti-rust protection effect of the whole valve. And under the detection of the pressure gauge, the air pressure in the housing can be detected, facilitating the observation of the usage condition of the inert gas in the housing.

[0016] As an alternative solution of the technical solution of this application document, the housing is composed of two half cylinders with external thread grooves. The joint between the two half cylinders is sealingly connected through a sealing ring, and a pressure ring rod capable of extruding the closed bottom cylinder to discharge inert gas is fixedly connected inside one of the half cylinders.

[0017] By adopting the above technical solution, the housing is composed of two half cylinders with added sealing rings, which is convenient for the housing to be installed outside the valve for protection. The pressure ring rod can abut against the top bead elastically limited inside the one-way exhaust valve in the threadedly connected closed bottom cylinder, causing the top column to be limited and contracted, opening the one-way exhaust valve channel, and discharging the compressed inert gas in the closed bottom cylinder into the housing to provide anti-corrosion protection for the valve structure sleeved and installed.

[0018] As an alternative solution of the technical solution of this application document, a clamping ring is fixedly connected inside the gasket sleeve. The clamping ring can be clamped and adapted to the annular groove opened on the side of the housing, and a fastening nut is rotatably connected to the outside of the gasket sleeve. The fastening nut is threadedly connected to the housing.

[0019] By adopting the above technical solution, the gasket sleeve with added clamping ring can, while realizing the sealed connection of the valve flange, perform clamping and limiting on the end face annular groove formed by splicing the housing, ensuring the neatness of the butt joint installation of the housing. The threaded connection between the fastening nut and the housing can connect and fix the spliced and installed housing, ensuring the stability of the sleeved protection of the housing.

[0020] As an alternative solution to the technical solution of this application document, a piston pressing plate is slidably and adaptively installed inside the closed bottom cylinder filled with inert gas. The piston pressing plate and the closed bottom cylinder are elastically limited by a spring member. One side of the closed bottom cylinder is fixedly connected with a one-way intake valve and a one-way exhaust valve. The top bead elastically limited inside the one-way exhaust valve can be squeezed and limited by the pressing ring rod.

[0021] By adopting the above technical solution, when the one-way exhaust valve channel is opened, the piston pressing plate equipped with a spring member can quickly discharge the inert gas compressed and stored in the closed bottom cylinder, and quickly fill the sealed and installed casing. The addition of the one-way intake valve can maintain the cyclic inflation use of the closed bottom cylinder.

[0022] As an alternative solution to the technical solution of this application document, one end of the adjusting insertion rod is slidably connected with a torsion rod.

[0023] By adopting the above technical solution, the torsion rod can extend the force arm of the adjusting insertion rod, making it more labor-saving to rotate the adjusting insertion rod.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By using the assembled installation of the casing, the gasket sleeve, the closed bottom cylinder and the closed top cylinder equipped with the adjusting insertion rod, the casing is sealed and sleeved outside the valve in a cylindrical structure, providing anti-corrosion protection for the whole valve. With the filling of inert gas in the closed bottom cylinder, the whole valve is in a stable environment, avoiding rust of the whole valve and improving the anti-rust protection effect of the whole valve. And under the detection of the pressure gauge, the air pressure in the casing can be detected, facilitating the observation of the usage condition of the inert gas in the casing;

[0026] 2. By using the piston pressing plate equipped with a spring member, when the one-way exhaust valve channel is opened, the inert gas compressed and stored in the closed bottom cylinder can be quickly discharged, and the sealed and installed casing can be quickly filled. The addition of the one-way intake valve can maintain the cyclic inflation use of the closed bottom cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic cross-sectional view of the overall structure of the anti-corrosion and erosion-resistant protection device for easily corroded components disclosed in a preferred embodiment of this application.

[0028] Figure 2 It is a schematic view of the casing structure of the anti-corrosion and erosion-resistant protection device for easily corroded components disclosed in a preferred embodiment of this application.

[0029] Figure 3 It is a schematic internal connection view of the gasket sleeve structure of the anti-corrosion and erosion-resistant protection device for easily corroded components disclosed in a preferred embodiment of this application.

[0030] Figure 4 Internal connection schematic diagram of the closed bottom cylinder structure of the corrosion-resistant and erosion-resistant protection device for easily corroded components disclosed in a preferred embodiment of the present application.

[0031] Figure 5 Internal connection schematic diagram of the closed top cylinder structure of the corrosion-resistant and erosion-resistant protection device for easily corroded components disclosed in a preferred embodiment of the present application.

[0032] Explanation of reference numerals in the figure: 1. Sheath; 2. Sealing gasket sleeve; 3. Closed bottom cylinder; 4. Closed top cylinder; 5. Adjusting plug rod; 6. Pressure gauge; 11. Pressure ring rod; 21. Clamping ring; 22. Tightening nut; 31. Piston pressing plate; 32. One-way exhaust valve; 51. Torsion rod. Detailed implementation manners

[0033] The present application will be further described in detail below with reference to the accompanying drawings of the specification.

[0034] Refer to Figures 1-5 In a corrosion-resistant and erosion-resistant protection device for easily corroded components described in an embodiment of the present application, a corrosion-resistant and erosion-resistant protection device for easily corroded components includes:

[0035] Sheath 1;

[0036] Sealing gasket sleeve 2, symmetrically sleeved at both ends of sheath 1;

[0037] Closed bottom cylinder 3 capable of filling inert gas into the sealed sheath 1, threadedly connected to one end of sheath 1;

[0038] Closed top cylinder 4, threadedly connected to the other end of sheath 1;

[0039] Adjusting plug rod 5 with a torsion rod 51 slidably connected to one end and used for rotating the valve wheel, sealingly and rotatably connected to one end of closed top cylinder 4;

[0040] Pressure gauge 6 for detecting the internal pressure change of the sealed sheath 1, threadedly connected to one side of closed top cylinder 4.

[0041] In this corrosion-resistant and erosion-resistant protection device for easily corroded components, through the assembled installation of sheath 1, sealing gasket sleeve 2, closed bottom cylinder 3 and closed top cylinder 4 where the adjusting plug rod 5 is installed, the sheath 1 is installed in a sealed cylindrical structure outside the valve to provide anti-corrosion protection for the whole valve. With the filling of inert gas in the closed bottom cylinder 3, the whole valve is in a stable environment, avoiding the rusting phenomenon of the whole valve and improving the anti-rust protection effect of the whole valve. And under the detection of the pressure gauge 6, the air pressure in the sheath 1 can be detected, facilitating the observation of the usage status of the inert gas in the sheath 1.

[0042] Refer to Figure 2 and Figure 1, in the corrosion-resistant and erosion-resistant protection device for easily corroded components described in the embodiments of the present application, the housing 1 is composed of two semi-cylinders with external thread grooves. The joint between the two semi-cylinders is sealed by a sealing ring, and a pressing ring rod 11 that can squeeze and close the bottom cylinder 3 to discharge inert gas is fixedly connected inside one of the semi-cylinders.

[0043] In this corrosion-resistant and erosion-resistant protection device for easily corroded components, the housing 1 is composed of two semi-cylinders with a sealing ring added, which is convenient for the housing 1 to be installed outside the valve for protection. The pressing ring rod 11 can abut against the top bead elastically limited inside the one-way exhaust valve 32 in the threaded closed bottom cylinder 3, causing the top column to be limited and contracted, opening the channel of the one-way exhaust valve 32, and discharging the compressed inert gas in the closed bottom cylinder 3 into the housing 1 to carry out anti-corrosion protection on the valve structure installed by socket connection.

[0044] Refer to Figure 3 and Figure 1 , in the corrosion-resistant and erosion-resistant protection device for easily corroded components described in the embodiments of the present application, a clamping ring 21 is fixedly connected inside the sealing gasket sleeve 2. The clamping ring 21 can be clamped and adapted to the annular groove opened on the side of the housing 1, and a fastening nut 22 is rotatably connected to the outside of the sealing gasket sleeve 2. The fastening nut 22 is threadedly connected to the housing 1.

[0045] In this corrosion-resistant and erosion-resistant protection device for easily corroded components, by using the sealing gasket sleeve 2 with a clamping ring 21 added, while realizing the sealing connection of the valve flange, it can also perform clamping and limiting on the end face annular groove formed by splicing the housing 1, ensuring the neatness of the butt joint installation of the housing 1. The threaded connection between the fastening nut 22 and the housing 1 can connect and fix the spliced housing 1, ensuring the stability of the socket protection of the housing 1.

[0046] Refer to Figure 4 and Figure 1 , in the corrosion-resistant and erosion-resistant protection device for easily corroded components described in the embodiments of the present application, a piston pressing plate 31 is slidably adapted inside the closed bottom cylinder 3 filled with inert gas. The piston pressing plate 31 is elastically limited by a spring member between it and the closed bottom cylinder 3, and a one-way intake valve and a one-way exhaust valve 32 are fixedly connected to one side of the closed bottom cylinder 3. The top bead elastically limited inside the one-way exhaust valve 32 can be squeezed and limited by the pressing ring rod 11.

[0047] In this corrosion-resistant and erosion-resistant protection device for easily corroded components, by using the piston pressing plate 31 with a spring member added, when the channel of the one-way exhaust valve 32 is opened, the compressed and stored inert gas in the closed bottom cylinder 3 can be quickly discharged, and the sealed housing 1 can be quickly filled. The addition of the one-way intake valve can maintain the cyclic inflation use of the closed bottom cylinder 3.

[0048] Working principle: First, put the two semi-cylinders with a sealing ring added on the outside of the valve that needs anti-corrosion protection to form the housing 1 structure;

[0049] Next, thread the fastening nut 22 rotatably connected to one end of the gasket sleeve 2 onto the housing 1. While limiting the connection of the housing 1, the clamping ring 21 is driven to be clamped and limited in the annular groove of the housing 1, realizing the stable and sealed splicing of the housing 1. When the gasket sleeve 2 is sleeved outside the flange of the valve, the connecting bolts of the flange are inserted into the hexagonal grooves of the flange, facilitating the connection and installation between the valve and the pipeline;

[0050] After the bolts in the hexagonal grooves of the flange are connected and fixed to the pipeline, the gasket sleeve 2 is tightly connected to the valve flange to realize the sealing function between the valve and the pipeline support;

[0051] Next, insert and limit the adjusting rod 5 rotatably connected in the closing top cylinder 4 to the valve wheel sleeved in the housing 1, and then rotate the closing top cylinder 4 to be threadedly connected and sealed with the housing 1;

[0052] Finally, thread the closing bottom cylinder 3 onto the housing 1 to realize the sealing of the overall structure of the housing 1. After the closing bottom cylinder 3 is screwed to a certain distance, the top bead of the one-way exhaust valve 32 in the closing bottom cylinder 3 is squeezed against the pressure ring rod 11, opening the channel of the one-way exhaust valve 32. At this time, the inert gas compressed and stored in the closing bottom cylinder 3 is quickly discharged outside, quickly filling the hermetically installed housing 1.

Claims

1. A corrosion-resistant and erosion-resistant protection device for easily corroded parts, characterized in that: include: Shell (1); The sealing gasket sleeve (2) is symmetrically structured and sleeved at both ends of the sleeve shell (1); A closed bottom cylinder (3) capable of filling the sealed casing (1) with an inert gas and threadedly connected to one end of the casing (1); A closed top cylinder (4) is threadedly connected to the other end of the casing (1); An adjusting rod (5) for rotating the valve wheel, which is sealingly rotatably connected to one end of the closing top cylinder (4); A pressure gauge (6) for detecting changes in the internal pressure of the sealing sleeve (1) is threadedly connected to one side of the closed top cylinder (4).

2. The corrosion-resistant erosion protection device for easily corroded parts according to claim 1, characterized in that: The casing (1) is composed of two half-cylinders with external thread grooves, the two half-cylinders are sealed and connected at the joints via a sealing ring, and a pressure ring rod (11) is fixedly connected in one of the half-cylinders and is capable of squeezing and closing the bottom cylinder (3) to discharge inert gas.

3. The corrosion-resistant and erosion-resistant protection device for corrosion-prone parts according to claim 1, characterized in that: A clamping ring (21) is fixedly connected to the inside of the sealing gasket sleeve (2), and the clamping ring (21) can be clamped and adapted to the annular groove provided on the side of the sleeve (1), and a fastening screw sleeve (22) is rotatably connected to the outside of the sealing gasket sleeve (2), and the fastening screw sleeve (22) is threadedly connected to the sleeve (1).

4. The corrosion-resistant and erosion-resistant protection device for corrosion-prone parts according to claim 1, characterized in that: The closed bottom cylinder (3) filled with inert gas is internally slidably adapted to have a piston pressure plate (31), the piston pressure plate (31) and the closed bottom cylinder (3) are elastically limited by a spring member, and a one-way air intake valve and a one-way air exhaust valve (32) are fixedly connected to one side of the closed bottom cylinder (3), and a top ball elastically limited in the one-way air exhaust valve (32) can be squeezed and limited with the pressure ring rod (11).

5. The corrosion-resistant and erosion-resistant protection device for corrosion-prone parts according to claim 1, characterized in that: One end of the adjusting rod (5) is slidably connected to a torsion rod (51).

Images