High-pressure gate valve body

Abstract

The utility model relates to the technical field of valve bodies, and discloses a high-pressure gate valve body, which comprises a pipe body, a valve core and a fixed seat, the top of the pipe body is fixedly connected with a communicating column, the inner wall of the communicating column is in threaded connection with a screw rod, the top of the outer wall of the screw rod is fixedly connected with a valve ring, and the left side and the right side of the valve core are fixedly connected with rubber rings. The ends, away from each other, of the multiple rubber rings are all connected with fixing pieces, and the ends, away from each other, of the multiple reinforcing pieces are all fixedly connected with inner rods. When the device needs to be opened, only the valve ring located at the top needs to be rotated, the valve ring drives the screw fixedly connected with the valve ring to enable the valve element to rotate, after the valve element is in an opened state, a large amount of fluid penetrates through the round hole in the middle of the valve element to generate large pressure, and the two sides of the valve element provide the buffering effect of the rubber ring and the spring rod; the influence on the device at the moment of fluid entering is avoided to a great extent, and the service life of a product is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, and in particular to a high-pressure gate valve body. Background Technology

[0002] A high-pressure gate valve is a forced-seal valve that controls the flow of fluid by a vertically rising gate. Its gate is driven by the valve stem to achieve full opening and closing functions. It is mainly used in high-pressure pipeline control in petrochemical and power systems. The valve body, as the core pressure-bearing component of the high-pressure gate valve, is cast from carbon steel or stainless steel and integrated into the pipeline system through flange and welding connections. The internal precision-machined flow channel design can effectively reduce fluid resistance, and the sealing surface with hard alloy overlay, together with the elastic gate, forms a reliable sealing structure.

[0003] The operating principle of a traditional high-pressure gate valve is that the valve stem drives the gate to rise and fall vertically. The gate and the valve seat sealing surface are tightly fitted to block the flow of the medium. When it is closed, an external force is required to force a seal or it relies on the pressure of the medium to achieve a self-sealing. This structure has disadvantages such as wear of the sealing surface, long opening and closing time, excessive operating torque due to friction between the valve stem and the packing, and rigid contact that is prone to impact loads.

[0004] The existing high-pressure gate valve body uses an elastic gate plate design to compensate for machining errors, converts the rotation of the handwheel into the linear motion of the valve stem through a trapezoidal thread, and optimizes the sealing performance using a self-sealing structure. However, in actual use, the above-mentioned device has the problem of sudden pressure change due to rapid water flow at the moment of opening and closing, which intensifies the erosion of the sealing surface and increases the frictional resistance of the valve stem, leading to operational difficulties. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a high-pressure gate valve body, which aims to improve the problem of the lack of a buffer structure in the valve core in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure gate valve body, comprising a pipe body, a valve core, and a fixing seat. A connecting column is fixedly connected to the top of the pipe body, and a screw is threadedly connected to the inner wall of the connecting column. A valve ring is fixedly connected to the top of the outer wall of the screw. Rubber rings are fixedly connected to both sides of the valve core. Fixing plates are fixedly connected to the opposite ends of multiple rubber rings. Inner rods are fixedly connected to the opposite ends of multiple reinforcing plates. Outer rods are slidably connected to the opposite ends of multiple inner rods. Fixing holes are opened at the opposite ends of multiple fixing seats. Outer rods are fixedly connected to the inner walls of multiple fixing holes. Sealing mechanisms are provided on both sides of the outer wall of the pipe body. The sealing mechanisms are used to increase the sealing performance of the valve body pipe connection.

[0007] As a further description of the above technical solution:

[0008] The sealing mechanism includes a rear ring, a second pipe fixedly connected to the top of the rear ring, a filling ring fixedly connected to the outer wall of the second pipe, a soft rubber tube connected to the top of the filling ring, a material ring connected to the top of the soft rubber tube, a first pipe fixedly connected to the inner wall of the material ring, and a front ring fixedly connected to the top of the first pipe.

[0009] As a further description of the above technical solution:

[0010] A second flange ring is fixedly connected to the top of the connecting pipe, and multiple flange rods are fixedly connected to the top of the outer wall of the second flange ring. A first flange plate is fixedly connected to the top of the outer wall of the multiple flange rods.

[0011] As a further description of the above technical solution:

[0012] A connecting seat is fixedly connected to the front side of the outer wall of the tube, and a dial is fixedly connected to the top of the connecting seat.

[0013] As a further description of the above technical solution:

[0014] The dial has a rotatable hand connected to the front of its outer wall, and a scale is provided on the front of its outer wall.

[0015] As a further description of the above technical solution:

[0016] The outer walls of the tube are fixedly connected to both the left and right sides with reinforcing rings, and the outer walls of the multiple reinforcing rings are fixedly connected to reinforcing plates.

[0017] As a further description of the above technical solution:

[0018] A third flange is fixedly connected to one of the ends of the plurality of reinforcing rings that are far apart from each other, and the third flange has anti-slip texture.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the third flange is provided with a screw hole, the inner wall of the screw hole is threaded with a screw, and the outer wall of the screw is fixedly connected with a rubber ring.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, when the device needs to be opened, it is only necessary to rotate the valve ring at the top, which will drive the screw fixedly connected to it to rotate the valve core. When the valve core is in the open state, a large amount of fluid passes through the round hole in the middle of the valve core and generates greater pressure. Through the buffering effect of the rubber rings and spring rods on both sides of the valve core, the impact of the fluid entering the device on the device itself is greatly avoided, and the service life of the product is effectively improved.

[0023] 2. In this utility model, when the valve body is connected to the pipeline, as the pressure at both ends of the valve body increases, the foaming adhesive in the material ring begins to be injected into the highly elastic material flow ring through the soft rubber tube. As the foaming adhesive itself expands and solidifies, the connection between the pipeline and the valve body has a high degree of sealing. Attached Figure Description

[0024] Figure 1 This is a perspective view of a high-pressure gate valve body proposed in this utility model;

[0025] Figure 2 This is a rear view of the valve body of a high-pressure gate valve proposed in this utility model;

[0026] Figure 3 This is a side view of the valve body of a high-pressure gate valve proposed in this utility model;

[0027] Figure 4 This is a split view of the valve core of a high-pressure gate valve body proposed in this utility model;

[0028] Figure 5 This is an exploded view of the sealing mechanism of a high-pressure gate valve body proposed in this utility model.

[0029] Legend:

[0030] 1. Pipe body; 2. Sealing mechanism; 201. First pipe; 202. Pre-ring; 203. Material ring; 204. Flexible hose; 205. Filler ring; 206. Second pipe; 207. Rear ring; 3. Valve ring; 4. Screw; 5. Flange rod; 6. Connecting post; 7. Valve core; 8. Rubber ring; 9. Inner rod; 10. Outer rod; 11. Fixing seat; 12. Fixing hole; 13. Fixing plate; 14. Connecting seat; 15. Dial; 16. Screw; 17. Silicone ring; 18. First flange; 19. Second flange; 20. Reinforcing ring; 21. Reinforcing plate; 22. Anti-slip texture; 23. Screw hole; 24. Dial needle; 25. Scale; 26. Third flange. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a high-pressure gate valve body, comprising a pipe body 1, a valve core 7, and a fixed seat 11. A connecting post 6 is fixedly connected to the top of the pipe body 1. The pipe body 1 serves as the outer shell of the ball valve, supporting all internal components and withstanding the pressure and temperature of the pipeline medium. A screw 4 is threadedly connected to the inner wall of the connecting post 6. The screw 4 connects the drive device to the ball and transmits rotational torque. The connecting post 6 is the channel for opening and closing the ball valve. A valve ring 3 is fixedly connected to the top of the outer wall of the screw 4, assisting in the rotational operation of the screw 4. Rubber rings 8 are fixedly connected to both sides of the valve core 7. To improve the stability of the valve core 7, fixing plates 13 are fixedly connected to the far ends of multiple rubber rings 8. Inner rods 9 are fixedly connected to the far ends of multiple fixing plates 13. The fixing plates 13 are used to fix the inner rods 9. Outer rods 10 are slidably connected to the far ends of multiple inner rods 9. The outer rods 10, as the main load-bearing components, bear external loads and protect internal components, ensuring the reliable operation of the mechanical structure. The inner rods 9 provide internal support and fixation, enhancing the strength and stability of the overall structure. Fixing holes 12 are provided at the far ends of multiple fixing seats 11 for fixing. The outer rod 10 is fixedly connected to the inner wall of multiple fixing holes 12. Sealing mechanisms 2 are provided on both the left and right sides of the outer wall of the pipe body 1. These sealing mechanisms 2 are used to increase the sealing performance at the valve body pipe connection. A second flange 19 is fixedly connected to the top of the connecting column 6. The second flange 19 bears the main weight and distributes stress. Multiple flange rods 5 are fixedly connected to the top of the outer wall of the second flange 19. A first flange 18 is fixedly connected to the top of the outer wall of the multiple flange rods 5. The first flange 18 is connected by welding, which can effectively transfer pressure and reduce stress concentration. The front side of the outer wall of the pipe body 1 is fixedly connected to... A connecting seat 14 is provided to fix the top device. A dial 15 is fixedly connected to the top of the connecting seat 14. The dial 15 displays the pressure value of the measured medium intuitively for the operator to read quickly. A needle 24 is rotatably connected to the front of the outer wall of the dial 15. The needle 24 converts the deformation of the elastic element into a visual pressure value through mechanical transmission. A scale 25 is opened on the front of the outer wall of the dial 15. The scale 25 converts the deformation of the elastic element of the Bourdon tube into a visual pressure value through a pressure value scale that is evenly divided, allowing the operator to quickly read the real-time pressure status of the measured medium.

[0033] Specifically, the pipe body 1, as the core load-bearing structure of the ball valve shell, has a connecting column 6 fixedly installed on its top using a welding process. The pipe body 1 not only supports the internal valve core 7 and transmission components but also directly withstands the pressure impact and temperature changes of the medium within the pipeline. The inner wall of the connecting column 6 is machined with precision threads, forming a rigid connection with the screw 4. The screw 4, as the power transmission component between the drive device and the ball, controls the opening and closing state of the valve core 7 through rotational torque. The connecting column 6 also constitutes a flow channel for the fluid medium. A valve ring 3 is fixedly installed on the outer wall of the top of the screw 4 using bolts. The valve ring 3 assists the screw 4 in achieving precise rotation operation through a guide groove structure. Rubber rings 8 are symmetrically arranged on the left and right sides of the valve core 7. The rubber rings 8 absorb vibration energy through elastic deformation and improve the operational stability of the valve core 7. The ends of each rubber ring 8 away from the valve core 7 are fixedly connected to the fixing plate 13 by a hot-melt process. The fixing plate 13 serves as the mounting base for the inner rod 9, vertically fixing the inner rod 9 in a predetermined position. The ends of each inner rod 9 away from the fixing plate 13 are engaged with the outer rod 10 using a sliding pair. The outer rod 10, as the main load-bearing component for external loads, protects the internal components from impact through a rigid structure, ensuring the long-term stable operation of the mechanical system. The inner rod 9 enhances the bending and torsional resistance of the overall structure through axial support and radial limiting functions. Fixing holes 12 are machined on the end faces of each fixing seat 11 away from the inner rod 9. 12 forms a non-detachable connection with the outer rod 10 through an interference fit. Sealing mechanisms 2 are symmetrically arranged on the left and right sides of the outer wall of the pipe body 1. The sealing mechanism 2 adopts a multi-layer graphite spiral wound gasket and metal pressure ring combination structure, significantly improving the medium sealing effect between the valve body and the pipe interface. The top of the connecting column 6 is fixedly installed with a second flange 19 by flange bolts. The second flange 19, as the main load-bearing component, evenly distributes the external load to the shell of the pipe body 1. Multiple flange rods 5 are vertically welded to the top of its outer wall. The top of each flange rod 5 forms an integral structure with the first flange 18 through continuous fillet welds. The first flange 18 adopts a V-groove welding process, effectively reducing the stress concentration coefficient in the weld area. The front of the pipe body 1... The outer side wall is fixed with a bolt connecting seat 14, which serves as the mounting base for the top detection device. The top surface of the connecting seat 14 is fixed with a dial 15 via a precision machining platform. The dial 15 displays the pressure parameters of the pipeline medium in real time through a pointer and scale 25 linkage system, providing operators with intuitive monitoring data. The front surface of the dial 15 is fitted with a pointer 24 via a bearing structure. The pointer 24 is linked with the Bourdon tube via a sector gear, converting the deformation of the elastic element into a visible angular deflection. The front edge of the dial 15 is etched with scale 25, which is linearly divided according to the pressure measurement standard. Combined with the indication position of the pointer 24, it accurately reflects the medium pressure value corresponding to the deformation of the Bourdon tube.

[0034] Reference Figure 1 , Figure 3 and Figure 5An embodiment of this utility model provides: the sealing mechanism 2 includes a rear ring 207, which is used to connect to the tube body 1. The top of the rear ring 207 is fixedly connected to a second pipe 206, which is used to provide a support space for the filled ring 205 after filling. The outer wall of the second pipe 206 is fixedly connected to the filled ring 205, which is used to place the filled foam. The top of the filled ring 205 is connected to a soft rubber tube 204, which is the channel for injecting the foam. The top of the soft rubber tube 204 is connected to a material ring 203, which is the place where the foam is placed before it is injected. The inner wall of the material ring 203 is fixedly connected to a first pipe 201, which is used to connect to the second pipe 206. The top of the first pipe 201 is fixedly connected to a front ring 202, which is used to connect to other pipes.

[0035] Specifically, the rear ring 207 serves as the docking component of the pipe body 1. Its top is fixedly installed with the second pipe 206 via a flange structure. The second pipe 206 provides positioning support space for the filling ring 205 after the filling operation. The filling ring 205 is rigidly connected to the outer wall of the second pipe 206 via an annular groove. The filling ring 205 serves as the receiving area after the foam is filled. Its top is sealed and connected to the flexible tube 204 via a quick connector. The flexible tube 204 serves as a flexible conveying channel for the foam injection. Its top end is connected to the material ring 203 via a transition cone surface to form a flow channel docking. The material ring 203 serves as a temporary storage cavity for uncured foam. Its inner wall is coaxially fixed to the first pipe 201 via a positioning pin. The first pipe 201 serves as an extension docking structure for the second pipe 206. Its top is integrally connected to the front ring 202 via a welding process. The front ring 202 serves as a transition interface for the multi-stage piping system, undertaking the load transfer and sealing functions of adjacent pipe sections.

[0036] Reference Figure 1 , Figure 2 and Figure 3In one embodiment of this utility model: Reinforcing rings 20 are fixedly connected to both the left and right sides of the outer wall of the pipe body 1. The reinforcing rings 20 are used to reinforce the joint between the valve body and the pipe. Reinforcing plates 21 are fixedly connected to the outer walls of multiple reinforcing rings 20, and the reinforcing plates 21 are used to further reinforce the valve body. A third flange 26 is fixedly connected to one end of each of the multiple reinforcing rings 20. The third flange 26 is fastened with bolts and sealed with gaskets, achieving a detachable connection at the pipe end. The third flange 26 has anti-slip texture 22, which, through a serrated pattern designed on its surface, enhances... High friction prevents rotation and slippage during bolt pre-tightening. The outer wall of the third flange 26 is provided with a screw hole 23. The screw hole 23 is fastened by the installation bolt, ensuring uniform compression and load distribution of the sealing surface between the pipe, valve and equipment. The inner wall of the screw hole 23 is threaded with a screw 16. The outer wall of the screw 16 is fixedly connected with a silicone ring 17. The pre-tightening force generated by the screw 16 evenly presses the silicone ring 17 to form a leak-proof sealing structure. The silicone ring 17 mainly fills the tiny gaps in the connection surface during the tightening process to form a sealing barrier.

[0037] Specifically, reinforcing rings 20 are symmetrically welded to both sides of the outer wall of pipe body 1. These reinforcing rings 20 serve as a strengthening structure at the joint between the valve body and the pipe, enhancing the deformation resistance of the connection area through a ring-shaped covering design. Multiple reinforcing plates 21 are evenly distributed on the outer wall of each reinforcing ring 20, employing a triangular reinforcing rib layout. This increases the section modulus, further optimizing the overall rigidity of the valve body structure. A third flange 26 is bolted to the end of each reinforcing ring 20 furthest from the valve body. The third flange 26 serves as a detachable connection interface, using a standard flange structure. A combination of high-strength bolts and sealing gaskets enables quick disassembly and pressure sealing of the pipe end. The contact surface of the third flange 26 is machined with anti-slip textures 22, which are staggered at 45-degree angles. The serrated texture design suppresses circumferential displacement during bolt pre-tightening by increasing the friction coefficient. The outer circumference of the third flange 26 is evenly distributed with bolt holes 23 at a specific angle. Precise control of the bolt pre-tightening force ensures uniform load transfer on the sealing surface. Standard threads are tapped into the inner walls of each bolt hole 23, forming an interference fit with the screw 16. A silicone ring 17, made of fluororubber, is fitted onto the screw 16. During screw tightening, the silicone ring 17 expands radially through axial compression, effectively filling the microscopic gaps in the flange contact surface and forming a double sealing barrier. When subjected to pipeline medium pressure, the elastic restoring force of the silicone ring 17 compensates for bolt pre-tightening force attenuation caused by temperature changes, ensuring long-term sealing reliability.

[0038] Working principle: First, when the device is started, the valve ring 3 located at the top needs to be rotated clockwise. It is rigidly connected to the screw 4 to drive the valve core 7 to rotate synchronously. When the valve core 7 rotates to the preset opening angle, a large amount of fluid will pass through the central hole of the valve core 7 quickly. At this time, the fluid forms a high pressure value inside the valve cavity. The elastic rubber rings 8 distributed on the left and right sides of the valve core 7 absorb the impact energy. The reverse force generated by the symmetrical spring rod structure achieves dynamic buffering. This design significantly reduces the instantaneous impact on the inner wall of the device when the fluid rushes in at high speed through the pressure dispersion mechanism. While ensuring the fluid transmission efficiency, it effectively alleviates the fatigue wear of key components and ultimately extends the overall service life of the device.

[0039] Furthermore, after the valve body and the pipeline system are connected, under the condition that the fluid pressure on both sides continues to rise, the foaming adhesive material stored in the material ring 203 is gradually injected into the structure of the filling ring 205 with high elasticity through the flexible soft tube 204. With the volume expansion effect of the foaming adhesive during the curing process, the polymer material inside it undergoes a cross-linking reaction to form a stable solid filler. This process not only tightly fills the physical gap between the material ring 203 and the pipeline, but also adaptively adjusts the difference in expansion coefficient through a dynamic pressure compensation mechanism. Finally, a dense sealing layer is formed in the pipeline valve body joint area, so that this part can maintain long-term stable sealing performance under complex pressure fluctuations.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 high-pressure gate valve body, comprising a pipe body (1), a valve core (7), and a fixed seat (11), characterized in that: A connecting post (6) is fixedly connected to the top of the pipe body (1). A screw (4) is threadedly connected to the inner wall of the connecting post (6). A valve ring (3) is fixedly connected to the top of the outer wall of the screw (4). Rubber rings (8) are fixedly connected to both the left and right sides of the valve core (7). Fixing plates (13) are fixedly connected to the opposite ends of the multiple rubber rings (8). Inner rods (9) are fixedly connected to the opposite ends of the multiple fixing plates (13). Outer rods (10) are slidably connected to the opposite ends of the multiple inner rods (9). Fixing holes (12) are opened at the opposite ends of the multiple fixing seats (11). Outer rods (10) are fixedly connected to the inner walls of the multiple fixing holes (12). Sealing mechanisms (2) are provided on both the left and right sides of the outer wall of the pipe body (1). The sealing mechanisms (2) are used to increase the sealing performance of the valve body pipe connection.

2. The high-pressure gate valve body according to claim 1, characterized in that: The sealing mechanism (2) includes a rear ring (207), the top of which is fixedly connected to a second pipe (206), the outer wall of which is fixedly connected to a filling ring (205), the top of which is connected to a soft rubber tube (204), the top of which is connected to a material ring (203), the inner wall of which is fixedly connected to a first pipe (201), and the top of which is fixedly connected to a front ring (202).

3. The high-pressure gate valve body according to claim 1, characterized in that: The top of the connecting column (6) is fixedly connected to a second flange (19), and the top of the outer wall of the second flange (19) is fixedly connected to a plurality of flange rods (5), and the top of the outer wall of the plurality of flange rods (5) is fixedly connected to a first flange (18).

4. The valve body of a high-pressure gate valve according to claim 1, characterized in that: A connecting seat (14) is fixedly connected to the front side of the outer wall of the tube (1), and a dial (15) is fixedly connected to the top of the connecting seat (14).

5. The valve body of a high-pressure gate valve according to claim 4, characterized in that: The dial (15) is rotatably connected to the front side of its outer wall, and the dial (15) is provided with a scale (25).

6. The valve body of a high-pressure gate valve according to claim 1, characterized in that: The outer walls of the tube (1) are fixedly connected with reinforcing rings (20) on both the left and right sides, and the outer walls of the multiple reinforcing rings (20) are fixedly connected with reinforcing plates (21).

7. The high-pressure gate valve body according to claim 6, characterized in that: A third flange (26) is fixedly connected to one end of each of the plurality of reinforcing rings (20), the third flange (26) having anti-slip texture (22).

8. The valve body of a high-pressure gate valve according to claim 7, characterized in that: The outer wall of the third flange (26) is provided with a screw hole (23), and a screw (16) is threadedly connected to the inner wall of the screw hole (23). A silicone ring (17) is fixedly connected to the outer wall of the screw (16).

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