An integrated double-insurance high-platform flange ball valve and its usage method

Abstract

The present invention discloses an integrated double-insurance high-platform flange ball valve and its usage method, including: two valve bodies; a steering component, which is arranged between the two valve bodies, and the two valve bodies are connected through the steering component. The steering component includes a steering member, and the steering member includes two fixing rings. In the present invention, the valve body is bent along the bending path of the hollow arc plate to cause a certain bending of the telescopic pipe, and the connecting arm and the connecting seat drive the fixed head to slide in the hollow arc plate. During the sliding, the positioning head is squeezed and deflected into the hidden groove by the first inclined convex block or the second inclined convex block. After the telescopic pipe is bent to a certain angle, the positioning head is reset by the elastic force of the first spring and clamped between the two first inclined convex blocks or the second inclined convex blocks, so as to provide a stable state when the telescopic pipe is bent. The connection angle of the two valve bodies can be adjusted according to the corner of the installation location, so that the ball valve can be installed in a complex position.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and particularly relates to an integrated double-insurance high-platform flange ball valve and a using method thereof. Background Art

[0002] ‌The high-platform flange ball valve‌ is a special ball valve design, characterized in that the design height of the valve body is relatively high relative to the center line of the pipeline. This design forms a relatively high platform. The main advantage of this design is that it can effectively reduce the deposition of the medium and ensure smoother fluid flow in the valve. It is widely used in industries such as petroleum, chemical industry, electric power, and metallurgy, and is particularly suitable for controlling high-temperature, high-pressure or corrosive media.

[0003] In some specific pipeline layouts, there are inclined or corner positions in the pipeline design. When encountering a corner at the installation position of the ball valve, due to the fixed shape of the traditional ball valve body, it cannot be installed to adapt to these positions. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated double-insurance high-platform flange ball valve and a using method thereof, which solve the problems that traditional ball valves control fluid flow through a single sphere. Once the ball valve leaks, it needs to be immediately repaired and replaced. The ball valve is not durable enough, and in some specific pipeline layouts, there are inclined or corner positions in the pipeline design. Due to the fixed shape of the traditional ball valve body, it cannot be installed to adapt to these positions.

[0005] The present invention solves the above technical problems through the following technical solutions. The present invention includes:

[0006] Two valve bodies, spheres are installed inside both of the two valve bodies, and valve stems are fixed above both of the two spheres;

[0007] A steering assembly, the steering assembly is arranged between the two valve bodies, and the two valve bodies are connected through the steering assembly. The steering assembly includes a steering member. The steering member includes two fixing rings, the two fixing rings are respectively welded to one side of the two valve bodies, and a telescopic pipe is welded between the two fixing rings;

[0008] The outer surfaces of the two fixing rings are provided with an annular groove, and sliding seats are slidably arranged inside the two annular grooves, and two first slide rail arms and two second slide rail arms are respectively fixed above the two sliding seats, and sliding arms are slidably arranged between the interiors of the two first slide rail arms and between the interiors of the two second slide rail arms, and a hollow arc plate is fixed between the two sliding arms, and a plurality of first inclined protrusions and a plurality of second inclined protrusions are fixed inside the hollow arc plate, a connecting arm is fixed above the two sliding seats, and a connecting seat is fixed at one end of the two connecting arms, and a fixing head is arranged above the two connecting seats, and the two fixing heads are both penetrated into the interior of the hollow arc plate, and a hidden groove is provided inside the two fixing heads, and a positioning head is rotatably arranged inside the two hidden grooves, and a first spring is fixed inside the two hidden grooves, and one end of the two first springs is fixedly connected to the two positioning heads respectively.

[0009] Preferably, two connecting grooves are provided at the bottom of the hollow arc plate, and the two connecting seats slide inside the two connecting grooves through two connecting pins. An inner groove is provided above the two connecting seats, and four positioning holes are provided on the inner surfaces of the two inner grooves. Sliding rods slide inside the two inner grooves, and two elastic strips are fixed at one end of the two sliding rods, and the two fixing heads are respectively fixed to one end of the two sliding rods.

[0010] Preferably, the first inclined protrusion and the second inclined protrusion are arranged in opposite directions.

[0011] Preferably, the steering assembly further comprises two steering exchange members, and the steering exchange members are used to change the position of the sliding seat inside the annular groove.

[0012] Preferably, four equidistantly distributed blocking grooves are provided on both sides of the inner surfaces of the two annular grooves, and receiving grooves are provided inside the two sliding seats. The steering exchange component includes a double magnetic pole bar rotating inside the receiving groove, a force plate fixed above the sliding seat, and a magnetic pole positioning head sliding inside the blocking groove. A connecting plate is fixed above the double magnetic pole bar, a second spring is fixed to the outside of the connecting plate, one end of the second spring is fixed to the inside of the receiving groove, the top of the connecting plate extends to the top of the sliding seat through a connecting shaft, and a paddle is fixed to one end of the connecting shaft.

[0013] Preferably, a driving mechanism is disposed above each of the two valve bodies, and the driving mechanism may be an electric actuator or a handle.

[0014] Preferably, a flange is provided on one side of the two valve bodies, one end of the two valve stems respectively extends to the outside of the two valve bodies, and one end of the two valve stems is respectively connected to two driving mechanisms.

[0015] A method for using an integrated double-safety high-platform flange ball valve comprises the following steps:

[0016] Step 1: bend the valve body along the curved path of the hollow arc plate, the valve body will cause the telescopic tube to bend to a certain extent, and drive the fixed head to slide in the hollow arc plate through the connecting arm and the connecting seat, and the positioning head will be squeezed by the first inclined protrusion or the second inclined protrusion when sliding and deflected into the hidden groove until the bending angle of the telescopic tube is adjusted appropriately, and the positioning head will be pushed by the first spring to be stuck between the two first inclined protrusions or between the second inclined protrusions, so as to fix the fixed head and provide a stable state when the telescopic tube is bent;

[0017] Step 2: After adjusting the angle of the connection between the two valve bodies, the valve body and the corresponding pipe can be connected through the flange;

[0018] Step 3: According to the different bending directions required, you can pinch the force plates and paddles on the two sliding seats with both hands respectively. The paddles are forced to drive the connecting plate to deflect and squeeze the second spring. The connecting plate drives the double magnetic pole bar to deflect until the double magnetic pole bar pushes the two magnetic pole positioning heads into the two blocking grooves respectively. The sliding seat is rotated along the annular groove until the hollow arc plate is moved to the appropriate position. The sliding seat corresponds to the two magnetic pole positioning heads. Under the action of the opposite magnetic poles on the double magnetic pole bar and the magnetic pole positioning heads, the magnetic pole positioning heads are sucked into the receiving groove to fix the position of the sliding seat, thereby changing the position of the hollow arc plate on the telescopic tube, and then changing the direction in which the telescopic tube is bent.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Compared with the traditional single ball valve, this ball valve is equipped with two balls for controlling the flow of fluid. The ball in one valve body is in an open state for a long time, and the ball in the other valve body is used to control the flow of fluid. Once the valve body corresponding to the used ball fails, the ball in the valve body that has been in an open state for a long time can be put into use, providing double insurance for the use of the ball valve and improving the durability of the ball valve. Compared with the traditional single-ball ball valve, the number of repairs and replacements after the ball valve fails can be reduced, that is, the number and duration of shutdowns of pipeline equipment connected to the ball valve can be reduced. Compared with installing and using two valves together, it reduces the occupied space, connection points and leakage points, and reduces costs at the same time.

[0021] 2. By bending the valve body along the bending path of the hollow arc plate, the telescopic tube is bent to a certain extent. The connecting arm and the connecting seat drive the fixed head to slide in the hollow arc plate. During the sliding, the positioning head is deflected into the hidden groove under the extrusion of the first inclined convex block or the second inclined convex block. After the telescopic tube is bent to a certain angle, the positioning head is reset under the elastic force of the first spring and clamped between the two first inclined convex blocks or the second inclined convex blocks, providing a stable state for the bending of the telescopic tube. The connection angle between the two valve bodies can be adjusted according to the corner of the installation location, enabling the ball valve to be installed in a complex position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the main structure of the present invention;

[0023] Figure 2 Schematic diagram of the internal structure of the valve body in the present invention disassembled;

[0024] Figure 3 Schematic diagram of the structure of the steering assembly in the present invention;

[0025] Figure 4 Disassembled sectional view of the steering assembly in the present invention;

[0026] Figure 5 is Figure 4 Enlarged schematic diagram of part A in;

[0027] Figure 6 is Figure 4 Enlarged schematic diagram of part B in;

[0028] Figure 7 Partial sectional view of the steering assembly in the present invention;

[0029] Figure 8 is Figure 7 Enlarged schematic diagram of part C in.

[0030] 1. Valve body;

[0031] 2. Steering assembly; 21. Fixed ring; 22. Telescopic tube; 23. Annular groove; 24. Sliding seat; 25. First slide rail arm; 26. Second slide rail arm; 27. Sliding arm; 28. Hollow arc plate; 29. First inclined convex block; 210. Second inclined convex block; 211. Connecting groove; 212. Connecting arm; 213. Connecting seat; 214. Inner groove; 215. Positioning hole; 216. Slide bar; 217. Elastic strip; 218. Fixed head; 219. Hidden groove; 220. Positioning head; 221. First spring; 222. Blocking groove; 223. Receiving groove; 224. Bipolar strip; 225. Force application piece; 226. Magnetic pole positioning head; 227. Connecting piece; 228. Second spring; 229. Paddle.

[0032] 3. Driving mechanism; 4. Flange; 5. Sphere; 6. Valve stem. Detailed implementation manner

[0033] The following further elaborates on the above and additional technical features and advantages of the present invention with reference to the accompanying drawings.

[0034] The present invention provides a technical solution: an integrated double-insurance high-platform flange ball valve, as Figures 1-8 shown, comprising two valve bodies 1 and a steering assembly 2. On one side of each of the two valve bodies 1, a flange 4 is provided. The flange 4 is an important component for connecting the valve body 1 to the pipeline, used to install the ball valve in the pipeline system to ensure sealing performance and firmness. Inside each of the two valve bodies 1, a sphere 5 is installed. The sphere 5 is a hollow spherical member with a round hole (through hole) in the center, usually made of metal or plastic. Its main function is to control the flow of fluid. When the through hole of the sphere 5 is aligned with the flow direction of the pipeline, the fluid can pass through freely. When the sphere 5 is rotated 90 degrees so that the through hole of the sphere 5 is perpendicular to the fluid flow direction, the fluid is completely blocked. Above each of the two spheres 5, a valve stem 6 is fixed. One end of each of the two valve stems 6 extends to the outside of the two valve bodies 1 respectively. Above each of the two valve bodies 1, a driving mechanism 3 is provided. One end of each of the two valve stems 6 is respectively connected to the two driving mechanisms 3. The driving mechanism 3 can be an electric actuator or a handle. The valve stem 6 is usually made of metal. The driving mechanism 3 transmits the operating force through the valve stem 6, and rotates the sphere 5 through the electric actuator or the handle, thereby controlling the opening and closing state of the valve.

[0035] The steering assembly 2 is arranged between the two valve bodies 1. The two valve bodies 1 are connected through the steering assembly 2. The steering assembly 2, as a pipeline structure connecting the two valve bodies 1, connects the two valve bodies 1 and the steering assembly 2 into a closed whole. And the combined length of the two valve bodies 1, the steering assembly 2, and the two flanges 4 is the same as the length of a traditional single ball valve. Compared with the traditional single ball valve, this ball valve is provided with two spheres 5 for controlling the fluid flow. The sphere 5 in one of the valve bodies 1 is in an open state for a long time, and the sphere 5 in the other valve body 1 is used to control the fluid flow. Once a failure occurs in the valve body 1 corresponding to the used sphere 5, the sphere 5 in the valve body 1 that has been in an open state for a long time can be put into use, providing double insurance during the use of the ball valve, increasing the service life of the ball valve. Compared with the traditional single-sphere ball valve, it reduces the number of maintenance and replacement times after the ball valve fails, that is, it can reduce the number of shutdown times and durations of the pipeline equipment connected to the ball valve. Compared with installing and using two valves together, it reduces the occupied space, connection points, and leakage points, and at the same time reduces costs.

[0036] The steering assembly 2 is a pipe structure that connects the two valve bodies 1 in the middle. The steering assembly 2 is used to change the angle between the two connected valve bodies 1. The two valve bodies 1 can be connected linearly through the steering assembly 2, or the angle formed by the two valve bodies 1 can be slightly adjusted to adapt to installations with different space requirements. The steering assembly 2 includes a steering member, and the steering member includes two fixing rings 21. The two fixing rings 21 are respectively welded to one side of the two valve bodies 1, and a telescopic pipe 22 is welded between the two fixing rings 21.

[0037] The outer surfaces of both of the two fixing rings 21 are provided with annular grooves 23. Sliding seats 24 are slidably arranged inside both of the two annular grooves 23. Above the two sliding seats 24, two first slide rail arms 25 and two second slide rail arms 26 are respectively fixed. A slide arm 27 is slidably arranged between the interiors of the two first slide rail arms 25 and between the interiors of the two second slide rail arms 26. A hollow arc-shaped plate 28 is fixed between the two slide arms 27. A plurality of first inclined bumps 29 and a plurality of second inclined bumps 210 are fixed inside the hollow arc-shaped plate 28. The number of the first inclined bumps 29 is equal to that of the second inclined bumps 210, and they are equidistantly distributed from the middle part of the hollow arc-shaped plate 28 to both sides. The first inclined bumps 29 and the second inclined bumps 210 are arranged in opposite directions. Two connecting grooves 211 are opened below the hollow arc-shaped plate 28. Connecting arms 212 are respectively fixed above the two sliding seats 24. One ends of the two connecting arms 212 are respectively fixed with connecting seats 213. The two connecting seats 213 are respectively slidably arranged inside the two connecting grooves 211 through two connecting pins. Inner grooves 214 are opened above the two connecting seats 213. Four positioning holes 215 are opened on the inner surfaces of the two inner grooves 214. Two of the four positioning holes 215 form a group and are respectively arranged at different heights. The two positioning holes 215 in a group are arranged with their openings facing each other. Slide rods 216 are slidably arranged inside the two inner grooves 214. Two elastic strips 217 are respectively fixed at one ends of the two slide rods 216. When the slide rods 216 are completely inside the inner grooves 214, the elastic strips 217 correspond to the positioning holes 215 at the lower positions, and the two elastic strips 217 are respectively stuck in the corresponding positioning holes 215 to limit the slide rods 216. Fixing heads 218 are respectively arranged above the two connecting seats 213. The two fixing heads 218 are respectively fixed at one ends of the two slide rods 216. The two fixing heads 218 respectively penetrate through the interior of the hollow arc-shaped plate 28. Hidden grooves 219 are opened inside the two fixing heads 218. Positioning heads 220 are rotatably arranged inside the two hidden grooves 219. First springs 221 are respectively fixed inside the two hidden grooves 219. One ends of the two first springs 221 are respectively fixedly connected with the two positioning heads 220. When the first springs 221 are in their original lengths, one ends of the positioning heads 220 extend outside the fixing heads 218 and are stuck between two adjacent first inclined bumps 29 or second inclined bumps 210.

[0038] In some specific pipeline layouts, the pipeline may be designed at an inclined or corner position. If the position where the two valve bodies 1 are connected is located at a corner and has a certain curvature, the valve body 1 can be bent along the curved path of the hollow arc plate 28. The valve body 1 will cause the telescopic tube 22 to bend to a certain extent, and drive the fixed head 218 to slide in the hollow arc plate 28 through the connecting arm 212 and the connecting seat 213. During the sliding process, the positioning head 220 is squeezed by the first inclined protrusion 29 or the second inclined protrusion 210 to deflect into the hidden groove 219, and squeezes the first spring 221. After moving with the fixed head 218 to between the two first inclined protrusions 29 or between the second inclined protrusions 210, it is squeezed by the first spring 221. The elastic reset of 1 makes the positioning head 220 stuck between the two first inclined protrusions 29 or between the second inclined protrusions 210, so as to fix the position of the fixing head 218 and prevent the fixing head 218 from moving back, provide a stable state when the telescopic tube 22 is bent, and fix the deflection angle of the valve body 1 and the curvature of the telescopic tube 22. The two valve bodies 1 can change the angle of connection between them in the above manner. The valve body 1 and the corresponding pipeline can be installed after the angles of the two are adjusted and fixed. It is also possible to install a valve body 1 first and then adjust the bending angle to install the next valve body 1 and the pipeline, so that the ball valve can better adapt to these complex installation conditions and avoid installation difficulties caused by pipeline layout restrictions.

[0039] The steering assembly 2 also includes two steering exchange parts, which are used to change the position of the sliding seat 24 inside the annular groove 23, and change the position of the hollow arc plate 28 on the periphery of the telescopic tube 22 by changing the position of the sliding seat 24. Four equidistantly distributed shielding grooves 222 are provided on both sides of the inner surface of the two annular grooves 23, and the interior of the two sliding seats 24 is provided with a receiving groove 223. The steering exchange parts include a double magnetic pole strip 224 rotating inside the receiving groove 223, a force sheet 225 fixed above the sliding seat 24, and a magnetic pole positioning head 226 sliding inside the shielding groove 222. The outer surface of the double magnetic pole strip 224 is provided with two oppositely arranged magnetic poles "S poles" and two oppositely arranged magnetic poles "N poles", as shown in FIG. Figure 8 As shown, the "S pole" is locked with the magnetic pole positioning head 226, and the magnetic pole of the magnetic pole positioning head 226 is set to the "N pole". A connecting piece 227 is fixed on the top of the dual magnetic pole strip 224, and a second spring 228 is fixed to the outside of the connecting piece 227. One end of the second spring 228 is fixed to the inside of the receiving groove 223. The top of the connecting piece 227 extends to the top of the sliding seat 24 through a connecting shaft, and a paddle 229 is fixed to one end of the connecting shaft. When the second spring 228 is at its original length, the distance between the paddle 229 and the force plate 225 is the farthest, and at this time, the magnetic pole positioning head 226 and the position of the "S pole" set in the dual magnetic pole strip 224 are locked.

[0040] According to the different bending directions required, the force-applying pieces 225 and the paddles 229 on the two sliding seats 24 can be pinched with both hands respectively. The paddles 229 are deflected in the direction of the force-applying pieces 225 by the force, thereby driving the connecting piece 227 to deflect and squeeze the second spring 228. The connecting piece 227 will drive the dual magnetic pole strip 224 connected thereto to deflect, and during the deflection, the two magnetic pole positioning heads 226 are pushed into the two blocking grooves 222 respectively. After the dual magnetic pole strip 224 is deflected by a certain angle, the magnetic pole positioning heads 226 are pushed out of the receiving groove 223 through the “N pole” on its outer surface that is the same as the magnetic pole of the magnetic pole positioning heads 226, so as to release the limit of the magnetic pole positioning heads 226 on the sliding seat 24, and the sliding seat 24 is rotated along the annular groove 23 until the sliding seat 24 rotates out of its original position. First, adjust the positions of the two magnetic pole positioning heads 226 and then release the paddle 229. Under the reset of the second spring 228, the double magnetic pole strip 224 is reset. The sliding seat 24 will drive the hollow arc plate 28 to rotate along the outside of the telescopic tube 22 through the first slide rail arm 25 and the second slide rail arm 26 until the hollow arc plate 28 is moved to a suitable position. The sliding seat 24 corresponds to the two magnetic pole positioning heads 226. Under the action of the opposite magnetic poles on the double magnetic pole strip 224 and the magnetic pole positioning heads 226, the magnetic pole positioning heads 226 are sucked into the receiving groove 223 to fix the position of the sliding seat 24, thereby adjusting and changing the position of the hollow arc plate 28 on the telescopic tube 22, helping to change the direction in which the telescopic tube 22 is bent, and the two valve bodies 1 can be bent in different directions according to the space and needs of the installation position.

[0041] A method for using an integrated double-safety high-platform flange ball valve comprises the following steps:

[0042] Step 1: bend the valve body 1 along the curved path of the hollow arc plate 28. The valve body 1 will cause the telescopic tube 22 to bend to a certain extent, and drive the fixed head 218 to slide in the hollow arc plate 28 through the connecting arm 212 and the connecting seat 213. When the positioning head 220 slides, it is squeezed by the first inclined protrusion 29 or the second inclined protrusion 210 and deflected into the hidden groove 219 until the bending angle of the telescopic tube 22 is adjusted appropriately. The positioning head 220 will be pushed by the first spring 221 to be stuck between the two first inclined protrusions 29 or between the second inclined protrusions 210, so as to fix the fixed head 218 and provide a stable state for the telescopic tube 22 when it is bent.

[0043] Step 2: After adjusting the angle of the connection between the two valve bodies 1, the valve body 1 and the corresponding pipeline can be connected through the flange 4;

[0044] Step 3: According to the different bending directions required, the force-applying pieces 225 and the paddles 229 on the two sliding seats 24 can be pinched with both hands respectively. The paddles 229 are forced to drive the connecting piece 227 to deflect and squeeze the second spring 228. The connecting piece 227 drives the dual magnetic pole strip 224 to deflect until the dual magnetic pole strip 224 pushes the two magnetic pole positioning heads 226 into the two blocking grooves 222 respectively. The sliding seat 24 is rotated along the annular groove 23 until the hollow arc plate 28 is moved to a suitable position. The sliding seat 24 corresponds to the two magnetic pole positioning heads 226. Under the action of the opposite magnetic poles on the dual magnetic pole strip 224 and the magnetic pole positioning heads 226, the magnetic pole positioning heads 226 are sucked into the receiving groove 223 to fix the position of the sliding seat 24, thereby changing the position of the hollow arc plate 28 on the telescopic tube 22, and then changing the bending direction of the telescopic tube 22.

[0045] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. An integrated double-insurance high-platform flange ball valve, characterized in that, Including: Two valve bodies (1), spheres (5) are installed inside both of the two valve bodies (1), valve stems (6) are fixed above both of the two spheres (5); A steering assembly (2), the steering assembly (2) is arranged between the two valve bodies (1), the two valve bodies (1) are connected through the steering assembly (2), the steering assembly (2) includes a steering member, the steering member includes two fixing rings (21), the two fixing rings (21) are respectively welded to one side of the two valve bodies (1), and a telescopic tube (22) is welded between the two fixing rings (21); Circular grooves (23) are formed on the outer surfaces of the two fixing rings (21), sliding seats (24) slide inside the two circular grooves (23), two first slide rail arms (25) and two second slide rail arms (26) are respectively fixed above the two sliding seats (24), slide arms (27) slide between the interiors of the two first slide rail arms (25) and between the interiors of the two second slide rail arms (26), a hollow arc-shaped plate (28) is fixed between the two slide arms (27), a plurality of first inclined protrusions (29) and a plurality of second inclined protrusions (210) are fixed inside the hollow arc-shaped plate (28), connecting arms (212) are fixed above the two sliding seats (24), connecting seats (213) are fixed at one ends of the two connecting arms (212), fixing heads (218) are arranged above the two connecting seats (213), the two fixing heads (218) penetrate through the interior of the hollow arc-shaped plate (28), hidden grooves (219) are formed inside the two fixing heads (218), positioning heads (220) rotate inside the two hidden grooves (219), first springs (221) are fixed inside the two hidden grooves (219), and one ends of the two first springs (221) are respectively fixedly connected to the two positioning heads (220); Two connecting grooves (211) are formed below the hollow arc-shaped plate (28), the two connecting seats (213) slide inside the two connecting grooves (211) through two connecting pins, inner grooves (214) are formed above the two connecting seats (213), four positioning holes (215) are formed on the inner surfaces of the two inner grooves (214), slide rods (216) slide inside the two inner grooves (214), two elastic strips (217) are fixed at one ends of the two slide rods (216), and the two fixing heads (218) are respectively fixed at one ends of the two slide rods (216).

2. The integrated double-insurance high-platform flange ball valve according to claim 1, characterized in that, The first inclined protrusions (29) and the second inclined protrusions (210) are arranged in the opposite direction.

3. The integrated double-insurance high-platform flange ball valve according to claim 2, characterized in that, The steering assembly (2) further includes two steering conversion members, and the steering conversion members are used to change the positions of the sliding seats (24) inside the circular grooves (23).

4. The integrated double-insurance high-platform flange ball valve according to claim 3, characterized in that, Four equally spaced shielding grooves (222) are provided on both sides of the inner surface of the two annular grooves (23); a receiving groove (223) is provided inside the two sliding seats (24); the steering exchange member comprises a double magnetic pole strip (224) rotating inside the receiving groove (223), a force applying plate (225) fixed above the sliding seat (24), and a magnetic pole positioning head (226) sliding inside the shielding groove (222); a connecting plate (227) is fixed above the double magnetic pole strip (224); a second spring (228) is fixed outside the connecting plate (227); one end of the second spring (228) is fixed inside the receiving groove (223); the top of the connecting plate (227) extends to the top of the sliding seat (24) through a connecting shaft; a paddle (229) is fixed at one end of the connecting shaft.

5. The integrated double-insurance high-platform flange ball valve according to claim 1, characterized in that, A driving mechanism (3) is provided above each of the two valve bodies (1); the driving mechanism (3) is an electric actuator or a handle.

6. The integrated double-insurance high-platform flange ball valve according to claim 5, characterized in that, A flange (4) is provided on one side of the two valve bodies (1), one end of the two valve stems (6) respectively extends to the outside of the two valve bodies (1), and one end of the two valve stems (6) is respectively connected to the two drive mechanisms (3).

7. A method for using an integrated double insurance high platform flange ball valve, the method for using the integrated double insurance high platform flange ball valve as claimed in claim 4 or 6, comprising the following steps: Step 1: bend the valve body (1) along the curved path of the hollow arc plate (28), the valve body (1) will cause the telescopic tube (22) to bend to a certain extent, and drive the fixed head (218) to slide in the hollow arc plate (28) through the connecting arm (212) and the connecting seat (213), and the positioning head (220) will be squeezed by the first inclined protrusion (29) or the second inclined protrusion (210) when sliding, and deflected into the hidden groove (219) until the bending angle of the telescopic tube (22) is adjusted to a suitable level, and the positioning head (220) will be pushed by the first spring (221) to be stuck between the two first inclined protrusions (29) or between the second inclined protrusion (210), thereby fixing the fixed head (218) and providing a stable state for the telescopic tube (22) when it is bent; Step 2: After adjusting the angle of the connection between the two valve bodies (1), the valve body (1) and the corresponding pipeline can be connected through the flange (4); Step 3: According to the different directions of bending required, the force application pieces (225) and the shifting pieces (229) on the two sliding seats (24) can be pinched by both hands respectively. When the shifting piece (229) is stressed, it drives the connecting piece (227) to deflect and squeeze the second spring (228). The connecting piece (227) drives the double magnetic pole strip (224) to deflect until the double magnetic pole strip (224) pushes the two magnetic pole positioning heads (226) into the two shielding grooves (222) respectively. Then, rotate the sliding seat (24) along the annular groove (23) until the hollow arc-shaped plate (28) is moved to a proper position. The sliding seat (24) corresponds to the two magnetic pole positioning heads (226). Under the action of the opposite magnetic pole suction forces on the double magnetic pole strip (224) and the magnetic pole positioning heads (226), the magnetic pole positioning heads (226) are sucked into the storage grooves (223) to fix the position of the sliding seat (24), thereby changing the position of the hollow arc-shaped plate (28) on the telescopic tube (22), and further changing the bending direction of the telescopic tube (22).

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