Gas water medium ball valve with good sealing performance
By using king-shaped sealing gaskets and square seals in the gas-water medium ball valve, combined with scraper design, the problem of poor sealing of valves in crushed coal pressurized slag gasification technology is solved, and higher sealing is achieved Longer usage cycle.
Patent Information
- Application Number
- CN202420678790.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-02
AI Technical Summary
In the gasification technology of crushed coal pressurized slag, high-temperature and high-pressure black water and gray water cause poor sealing of valves, resulting in problems such as valve core locking, switch jamming, labor-intensive, and inability to operate, affecting process stability and long-term run.
A gas-water medium ball valve was designed, using king-shaped sealing gasket and square seals to increase the sealing area and contact surface, improve the structure and material of the sealing, add scrapers to remove dirt, and improve the sealing of the valve. and stability.
It effectively improves the sealing of the valve, reduces the occurrence of problems such as jamming and locking, extends the service cycle, reduces the number of repairs, and ensures the stable and long-term operation of the process.
Smart Images
Figure CN222458429U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the field of coal processing and production, in particular to a coal gas and water medium ball valve with good sealing performance. Background technology:
[0002] In the crushed coal pressurized slag gasification technology process of ADVANTICA in the UK, high-temperature and high-pressure products exist in the production process of the gasification system of this process. The black water produced by the gasification furnace and the ash water obtained after treatment have the characteristics of high temperature, high pressure, strong corrosiveness and easy scaling, which leads to many problems with the valves in the system.
[0003] Most of the problems include the following: the valve core and valve seat are stuck and cannot be opened. Continuing to increase the force will cause the turbine head to break; the switch is stuck and difficult, and after the turbine reaches the limit, the valve core is not fully open; scale is formed in the valve seat gap, the valve switch is stuck and difficult, or even cannot move; the slag water medium ball valve is stuck after reaching a certain opening and cannot be fully closed or fully opened, and scratches appear on the valve core surface; internal leakage occurs during the use of the valve.
[0004] In summary, in order to solve the valve problems in the crushed coal pressurized slag gasification technology process, a new type of valve with good sealing performance is needed to ensure the stable and long-term operation of the process. Utility model content:
[0005] The utility model aims to provide a gas-water medium ball valve with good sealing performance.
[0006] The utility model is implemented by the following technical solutions:
[0007] A gas-water medium ball valve with good sealing performance comprises a first valve body, a second valve body, a valve core and a sealing member. The first valve body and the second valve body are fixedly connected by bolts. Sealing grooves are arranged above the side walls of the connection between the first valve body and the second valve body. The sealing grooves are filled with sealing gaskets, and the cross section of the sealing gaskets is in a king-shaped shape.
[0008] Preferably, sealing members are embedded in the first valve body and the second valve body, and locking members are fixedly connected to the top and bottom ends of the sealing members, and corresponding locking grooves 7 are provided on the inner walls of the first valve body and the second valve body, and each locking member extends into the corresponding locking groove 7 and is slidably connected thereto, and a locking bolt is threadedly connected to each locking member, and corresponding locking holes are provided on the inner walls of the first valve body and the second valve body, and the locking bolt extends into the corresponding locking hole and is threadedly connected thereto.
[0009] Preferably, a groove is provided at the center of the sealing member, and scrapers are symmetrically fixedly mounted on the inner wall of the groove of the sealing member.
[0010] The advantages of the utility model: the original sealing gasket is modified into a "king" shape, which further increases the sealing area, thereby effectively ensuring the sealing between the two, and the original circular seal is modified to be set to slide in contact with the outer surface of the valve, and the seal is square in shape when viewed from the side, and the seal is thickened, which increases the contact sealing surface between the seal and the outer surface of the valve core. Compared with traditional circular seals, it is more reliable and stable to use, and reduces the damage to the inner wall of the cavity caused by attachments between the first valve body and the second valve body inside the valve core. Description of the drawings:
[0011] Figure 1 It is a schematic diagram of the structure of the utility model;
[0012] Figure 2 It is a cross-sectional view of AA in the present utility model.
[0013] In the figure: a first valve body 1, a second valve body 2, a valve core 3, a sealing member 4, a sealing gasket 5, a sealing groove 6, a locking groove 7, a locking member 8, a locking hole 9, and a scraper 10. Specific implementation method:
[0014] like Figure 1 to Figure 2 As shown, a gas-water medium ball valve with good sealing performance includes a first valve body 1, a second valve body 2, a valve core 3 and a sealing member 4. The first valve body 1 and the second valve body 2 are fixedly connected by bolts. A sealing groove 6 is provided above the side wall of the connection between the first valve body 1 and the second valve body 2. The sealing groove 6 is filled with a sealing gasket 5. The cross-section of the sealing gasket 5 is in a king-shaped shape. In order to avoid leakage between the first valve body 1 and the second valve body 2, the original sealing gasket 5 is modified into a "king" shape, which further increases the sealing area, thereby effectively ensuring the sealing between the two.
[0015] A sealing member 4 is embedded in the first valve body 1 and the second valve body 2, and a locking member 8 is fixedly connected to the top and bottom ends of the sealing member 4. Corresponding locking grooves 7 are provided on the inner walls of the first valve body 1 and the second valve body 2, and each locking member 8 extends into the corresponding locking groove 7 and is slidably connected thereto, and a locking bolt is threaded on each locking member 8. Corresponding locking holes 9 are provided on the inner walls of the first valve body 1 and the second valve body 2, and the locking bolts extend into the corresponding locking holes 9 and are threadedly connected thereto. The original circular sealing member 4 is modified to be slidingly arranged to fit the outer surface of the valve 3, and the sealing member 4 is square in shape when viewed from the side, and the sealing member 4 is thickened, and the curvature of the side edge of the sealing member 4 is the same as the curvature of the outer surface of the valve core 3, so that the contact sealing surface between the sealing member 4 and the outer surface of the valve core 3 is increased, and compared with the traditional circular sealing member, it is more reliable and stable to use.
[0016] A groove is provided at the center of the seal 4, and a scraper 10 is symmetrically fixedly installed on the inner wall of the groove of the seal 4. The scraper 10 can effectively scrape off the dirt attached to the outer surface of the valve core 3. When conveying is carried out, the valve core 3 remains open, and when conveying is stopped, the valve core 3 is closed. However, during the opening or stopping process, when each valve core 3 rotates, its outer wall will be scraped once by the scraper 10, reducing its attachments, thereby avoiding damage to the valve core 3 and reducing the damage caused to the inner wall of the cavity by the attachments between the first valve body 1 and the second valve body 2 inside the valve core 3. While reducing the attachments, it can also reduce the occurrence of problems such as sticking and locking, making it economical and durable, with a long service life and reduced maintenance times.
[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A gas-water medium ball valve with good sealing performance, characterized by: It includes a first valve body, a second valve body, a valve core and a sealing member. The first valve body and the second valve body are fixedly connected by bolts. A sealing groove is provided above the side wall of the connection between the first valve body and the second valve body. The sealing groove is filled with a sealing gasket, and the cross-section of the sealing gasket is in a king-shaped shape.
2. A gas-water medium ball valve with good sealing performance according to claim 1, characterized in that: The first valve body and the second valve body are both embedded with sealing members, the top and bottom ends of the sealing members are both fixedly connected with locking members, the inner walls of the first valve body and the second valve body are both provided with corresponding locking grooves 7, each locking member extends into the corresponding locking groove and is slidably connected thereto, each locking member is threaded with a locking bolt, the inner walls of the first valve body and the second valve body are both provided with corresponding locking holes, the locking bolts extend into the corresponding locking holes and are threadedly connected thereto.
3. A gas-water medium ball valve with good sealing performance according to claim 1, characterized in that: A slot is arranged at the center of the sealing member, and scrapers are symmetrically fixedly installed on the inner wall of the slot of the sealing member.