A multi-layer sealing top-loading ball valve

Abstract

This utility model discloses a multi-layered sealing top-entry ball valve, comprising: a valve body; a valve cover disposed on the top of the valve body; a pair of valve seats disposed on both sides inside the valve body, with a sealing compensation module between the valve seats and the valve body; a ball disposed between the pair of valve seats; and a valve stem, the bottom end of which passes through the valve cover and connects to the ball, with a sealing module between the valve stem and the valve cover. This utility model adopts a top-entry design, enabling rapid online maintenance and reducing downtime. The multi-layered sealing ring design achieves zero leakage under harsh operating conditions, extending the valve's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a top-mounted ball valve with layered sealing. Background Technology

[0002] Traditional floating ball valves generally perform well in water, oil, and gas media, but they cannot simultaneously meet the performance requirements of long service life and zero leakage in harsh operating conditions, such as high temperature and high pressure, corrosive and hazardous media, particulate media, long cycle operation and low maintenance requirements. Summary of the Invention

[0003] According to an embodiment of the present invention, a multi-layered sealing top-mounted ball valve is provided, comprising:

[0004] Valve body;

[0005] The valve cover is located on top of the valve body;

[0006] A pair of valve seats are provided on both sides inside the valve body, and a sealing compensation module is provided between the valve seats and the valve body.

[0007] A sphere, which is positioned between a pair of valve seats;

[0008] The valve stem has its bottom end passing through the valve cover and connecting to the ball. A sealing module is provided between the valve stem and the valve cover.

[0009] Furthermore, the sealing compensation module includes:

[0010] Multi-layer metal sealing ring, which is set between the valve seat and the valve body;

[0011] The first spacer ring is disposed between the valve seat and the valve body;

[0012] The second spacer is disposed between the valve seat and the valve body;

[0013] The elastic element is disposed between the valve seat and the valve body, and also between the first spacer ring and the second spacer ring.

[0014] Furthermore, the elastic element is a double disc spring.

[0015] Furthermore, a stop step is provided on the valve cover.

[0016] Furthermore, it also includes: a bearing, which is disposed between the valve stem and the valve cover, and located below the stop step.

[0017] Furthermore, the sealing module includes:

[0018] Packing material is placed between the valve stem and the valve cover.

[0019] A pressure sleeve is fitted onto the valve stem and positioned on top of the packing.

[0020] The clamping mechanism clamps the pressure sleeve.

[0021] Furthermore, the clamping mechanism includes:

[0022] Pressure plate, the pressure plate is sleeved on the valve stem and is located on the top of the pressure sleeve;

[0023] Two first screws, the bottom ends of which are connected to the valve cover, and the top ends of which penetrate the pressure plate;

[0024] Two first nuts are threaded onto the tops of two first screws to press the pressure plate.

[0025] Furthermore, it also includes: a first sealing ring, which is disposed between the valve cover and the valve body.

[0026] Furthermore, it also includes a second sealing ring, which is disposed between the valve cover and the valve body.

[0027] Furthermore, it also includes:

[0028] Multiple second studs, the bottom ends of which are connected to the valve body, and the top ends of which penetrate the valve cover;

[0029] Multiple second nuts are threaded onto multiple second studs.

[0030] According to an embodiment of this utility model, a multi-layered sealing top-loading ball valve adopts a top-loading design, enabling rapid online maintenance and reducing downtime. The multi-layered sealing ring design achieves zero leakage under harsh operating conditions, extending the valve's lifespan.

[0031] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of a multi-layer sealing top-mounted ball valve according to an embodiment of the present utility model.

[0033] Figure 2 This is a front sectional view of a multi-layer sealing top-mounted ball valve according to an embodiment of the present invention.

[0034] Figure 3 This is a side sectional view of a multi-layer sealing top-mounted ball valve according to an embodiment of the present invention.

[0035] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point A in the middle. Detailed Implementation

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0037] First, combine Figures 1-4 This invention describes a multi-layered sealed top-mounted ball valve according to an embodiment of the present invention, used for on / off control of media such as water, oil, and gas, and has a wide range of applications.

[0038] like Figures 1-4 As shown, an embodiment of the present invention provides a multi-layer sealing top-mounted ball valve, comprising a valve body 100, a valve cover 200, a pair of valve seats 300, a ball 400, and a valve stem 500.

[0039] Specifically, such as Figures 1-4 As shown, the valve cover 200 is located on the top of the valve body 100. The valve cover 200 is provided with a stop step 201, which can prevent the valve stem 500 from being pushed out under the pressure of the medium, thus ensuring valve safety. A pair of valve seats 300 are located on both sides inside the valve body 100, and a sealing compensation module is provided between the valve seats 300 and the valve body 100. The ball 400 is located between the pair of valve seats 300. The bottom end of the valve stem 500 passes through the valve cover 200 and is connected to the ball 400. A sealing module is provided between the valve stem 500 and the valve cover 200. The valve stem 500 drives the ball 400 to connect or disconnect the pipeline.

[0040] Furthermore, such as Figures 1-4 As shown, the sealing compensation module includes: a multi-layer metal sealing ring 601, a first spacer ring 602, a second spacer ring 604, and an elastic element 603. The multi-layer metal sealing ring 601 is disposed between the valve seat 300 and the valve body 100; the first spacer ring 602 is disposed between the valve seat 300 and the valve body 100; the second spacer ring 604 is disposed between the valve seat 300 and the valve body 100; the elastic element 603 is disposed between the valve seat 300 and the valve body 100, and also between the first spacer ring 602 and the second spacer ring 604. The elastic element 603 is a double disc spring, which can absorb and compensate for high-temperature thermal expansion, resist temperature shock, improve sealing performance, and provide compensation space for the installation of the ball 400. The multi-layer metal sealing ring 601 provides elasticity, which can compensate for the gap in the sealing surface caused by temperature changes, pressure fluctuations, or wear, always maintaining pre-tight contact, and also has corrosion resistance and erosion resistance, giving the valve a longer service life and greater stability.

[0041] Furthermore, such as Figures 2-3As shown in the figure, a multi-layer sealed top-mounted ball valve according to an embodiment of the present invention further includes: a bearing 801, which is disposed between the valve stem 500 and the valve cover 200, and located below the stop step 201. When the bearing 801 and the valve stem 500 are installed from the inside out, the stop step 201 will limit the movement. The bearing 801 not only guides and centers the valve stem 500, but also reduces the friction of the valve stem 500 during rotation, thereby reducing the valve torque.

[0042] Furthermore, such as Figures 1-3 As shown, the sealing module includes: packing 701, pressure sleeve 702, and a clamping mechanism. Packing 701 is disposed between the valve stem 500 and the valve cover 200; pressure sleeve 702 is fitted onto the valve stem 500 and positioned on top of packing 701; the clamping mechanism clamps pressure sleeve 702. Packing 701 forms an adjustable dynamic sealing barrier between the valve stem 500 and the valve cover 200, preventing leakage of internal media, ensuring safe and environmentally friendly operation, and allowing for normal valve operation and convenient maintenance.

[0043] Furthermore, such as Figures 1-3 As shown, the clamping mechanism includes: a pressure plate 703, two first screws 704, and two first nuts 705. The pressure plate 703 is sleeved on the valve stem 500 and is located on the top of the pressure sleeve 702; the bottom ends of the two first screws 704 are connected to the valve cover 200, and the top ends of the two first screws 704 penetrate the pressure plate 703; the two first nuts 705 are respectively threaded to the top ends of the two first screws 704 for clamping the pressure plate 703. The connection method of the first screws 704 and the first nuts 705 is convenient for disassembly and assembly.

[0044] Furthermore, such as Figures 2-3 As shown, a multi-layer sealed top-mounted ball valve according to an embodiment of the present invention further includes: a first sealing ring 802 and a second sealing ring 803. The first sealing ring 802 is disposed between the valve cover 200 and the valve body 100, and the second sealing ring 803 is disposed between the valve cover 200 and the valve body 100. The double sealing ensures that the valve will not leak externally and extends the service life of the valve.

[0045] Furthermore, such as Figures 2-3 As shown in the figure, a multi-layer sealing top-mounted ball valve according to an embodiment of the present invention further includes: a plurality of second studs 804 and a plurality of second nuts 805. The bottom ends of the plurality of second studs 804 are connected to the valve body 100, and the top ends of the plurality of second studs 804 penetrate the valve cover 200; the plurality of second nuts 805 are respectively threaded onto the plurality of second studs 804. The connection method of using the second studs and second nuts 805 facilitates disassembly and assembly.

[0046] Above, refer to Figures 1-4This invention describes a multi-layered sealing top-loading ball valve according to an embodiment of the present invention. The top-loading design enables rapid online maintenance, reducing downtime. The multi-layered sealing ring design achieves zero leakage under harsh operating conditions, extending the valve's lifespan.

[0047] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A multi-layered sealing top-loading ball valve, characterized in that, Include: Valve body; A valve cover, which is disposed on top of the valve body; A pair of valve seats are disposed on both sides inside the valve body, and a sealing compensation module is provided between the valve seats and the valve body; A sphere, wherein the sphere is disposed between the pair of valve seats; A valve stem, the bottom end of which passes through the valve cover and is connected to the ball, and a sealing module is provided between the valve stem and the valve cover.

2. The multi-layer sealing top-mounted ball valve as described in claim 1, characterized in that, The sealing compensation module includes: A multi-layered metal sealing ring is disposed between the valve seat and the valve body; A first spacer ring is disposed between the valve seat and the valve body; A second spacer ring is disposed between the valve seat and the valve body; An elastic element is disposed between the valve seat and the valve body, and also between the first spacer ring and the second spacer ring.

3. The multi-layer sealing top-loading ball valve as described in claim 2, characterized in that, The elastic element is a double disc spring.

4. The multi-layer sealing top-loading ball valve as described in claim 1, characterized in that, The valve cover is provided with a stop step.

5. The top-loading ball valve with multi-layer sealing as described in claim 4, characterized in that, It also includes: a bearing disposed between the valve stem and the valve cover, and located below the stop step.

6. The top-loading ball valve with multi-layer sealing as described in claim 4, characterized in that, The sealing module includes: Packing material, wherein the packing material is disposed between the valve stem and the valve cover; A pressure sleeve is fitted onto the valve stem and positioned on top of the packing. A clamping mechanism that clamps the pressure sleeve.

7. The top-loading ball valve with multi-layer sealing as described in claim 6, characterized in that, The clamping mechanism includes: A pressure plate, which is sleeved on the valve stem and disposed on the top of the pressure sleeve; Two first screws, the bottom ends of which are connected to the valve cover, and the top ends of which penetrate the pressure plate; Two first nuts are threaded to the top ends of the two first screws, respectively, for pressing the pressure plate.

8. The top-loading ball valve with multi-layer sealing as described in claim 1, characterized in that, It also includes: a first sealing ring disposed between the valve cover and the valve body.

9. The top-loading ball valve with multi-layer sealing as described in claim 1 or 8, characterized in that, It also includes: a second sealing ring disposed between the valve cover and the valve body.

10. The multi-layer sealing top-mounted ball valve as described in claim 1, characterized in that, Also includes: A plurality of second studs, the bottom ends of which are connected to the valve body, and the top ends of which penetrate the valve cover; A plurality of second nuts are threaded onto the plurality of second studs.

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