Anti-loosening clamping block system for ultrahigh-pressure valve

Abstract

The invention relates to an anti-loosening clamping block system for an ultrahigh pressure valve, which is arranged in the ultrahigh pressure valve and is connected with a push rod and a valve rod. Comprising a clamping frame arranged on a push rod; the rotating rod is rotationally arranged in the clamping frame; the sleeve is movably arranged on the rotating rod in a sleeving manner; the power rod is rotationally arranged in the clamping frame; the connecting frame is rotationally arranged on the clamping frame; the clamping block is arranged on the connecting frame in a relative movement manner; wherein the rotating rod rotates to drive the connecting frame to rotate, and the clamping block rotates around the valve rod; the power rod is connected with the sleeve, the power rod rotates to drive the sleeve to move, and the sleeve drives the clamping blocks to get close to each other to clamp the valve rod. The problem that in an existing scheme, connection among a clamping block, a push rod and a valve rod is loosened, an ultrahigh-pressure valve cannot be completely closed, and leakage is caused is solved.

Description

Technical Field

[0001] The invention relates to the field of clamp block systems, and in particular to an anti-loosening clamp block system for ultra-high pressure valves. Background Art

[0002] When the ultra-high pressure valve is operated, the actuator is used to drive the valve to perform corresponding actions. The connection between the actuator and the ultra-high pressure valve is achieved through a clamp. One end of the clamp is threadedly connected to the push rod of the actuator, and the other end of the clamp is threadedly connected to the valve stem of the ultra-high pressure valve.

[0003] After the ultra-high pressure valve is repeatedly operated, the connection between the clamp, push rod and valve stem will become loose, and the actuator driving the corresponding stroke cannot completely close the ultra-high pressure valve, causing leakage.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an anti-loosening clamp block system for ultra-high pressure valves, so as to solve the problem in the prior art that the connection between the clamp block, push rod and valve stem becomes loose, and the ultra-high pressure valve cannot be completely closed, thereby causing leakage.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] An anti-loosening clamp block system for an ultra-high pressure valve, which is arranged in the ultra-high pressure valve and connects the push rod and the valve stem;

[0008] It comprises: a clamping frame, which is arranged on the push rod; and a rotating rod, which is rotatably arranged in the clamping frame;

[0009] A sleeve is movably sleeved on the rotating rod; a power rod is rotatably arranged in the clamping frame; a connecting frame is rotatably arranged on the clamping frame; a clamping block is relatively movably arranged on the connecting frame;

[0010] The rotation of the rotating rod drives the connecting frame to rotate, and the clamping block rotates around the valve stem; the power rod is connected to the sleeve, and the rotation of the power rod drives the sleeve to move, and the sleeve drives the clamping blocks to move closer to each other to clamp the valve stem.

[0011] A further technical solution is characterized in that a first power device and a second power device are arranged in the clamping frame; a first driving wheel is arranged at the driving end of the first power device; a second driving wheel is arranged on the rotating rod; the first driving wheel engages with the second driving wheel; a coupling is arranged at the driving end of the second power device, and the coupling is connected to the power rod.

[0012] A further technical solution is characterized in that a frame groove is formed on the clamping frame near the push rod; the rotating rod passes through the frame groove; the rotating rod is inserted into the push rod, and the push rod is inserted into the frame groove.

[0013] A further technical solution is characterized in that a transmission rod is rotatably arranged inside the clamping frame; a first transmission wheel and a second transmission wheel are arranged on the transmission rod; a first tooth shape is formed in parallel on the sleeve, and a second tooth shape is spirally formed on the power rod; the first transmission wheel engages with the first tooth shape; and the second transmission wheel engages with the second tooth shape.

[0014] A further technical solution is characterized in that a slider is arranged on the sleeve; a guide rail is obliquely arranged on the clamping block; and the slider is slidably connected to the guide rail.

[0015] A further technical solution is characterized in that a guide rod is arranged in the connecting frame; and the clamping block is slidably connected to the guide rod.

[0016] A further technical solution is characterized in that thin film sensors are respectively arranged at the position where the clamping block abuts against the valve stem and at the position where the clamping block clamps the valve stem; the thin film sensors contact and sense the pressure of the clamping block.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) when the push rod pushes the anti-loosening clamping block system for the ultra-high pressure valve close to the valve stem, the clamping block abuts against the step position, and the clamping block clamps the embedded groove; the film sensor contacts and senses the clamping block pressure; by adjusting the angle and position of the valve stem, the valve stem is installed horizontally and coaxially with the push rod; after the adjustment is completed, by driving the clamping block to rotate a certain angle or a certain number of turns, observe the change of the clamping block pressure sensed by the film sensor; if the change range exceeds the set range, continue to adjust the valve stem; if the change range does not exceed the set range, there is no need to adjust the valve stem;

[0018] When the connection between the push rod, the valve stem and the anti-relaxation clamping block system for ultra-high pressure valves becomes loose, the clamping block will gradually disengage from the contact with the film sensor. The film sensor senses that the pressure of the clamping block will gradually decrease. When the pressure of the clamping block drops to the set value, the anti-relaxation clamping block system for ultra-high pressure valves will re-drive the clamping blocks closer to each other. Since the side of the groove on the valve stem is an inclined surface, when the clamping blocks approach each other, the clamping blocks rest against the step on the valve stem.

[0019] (2) The clamping frame is installed at the lower end of the push rod, the lower end of the push rod is inserted into the frame groove, and the outer surface of the push rod contacts the inner surface of the frame groove; the rotating rod is inserted into the lower end of the push rod, the rotating rod rotates along the inside of the push rod, the rotating rod contacts the inside of the push rod, and the push rod is inserted into the frame groove by inserting the rotating rod. The coaxial installation of the clamping frame and the push rod is completed, thereby ensuring the coaxial installation between the push rod and the valve stem.

[0020] (3) A guide rod is arranged in the horizontal direction in the connecting frame, and the guide rod passes through the clamping block; when the clamping blocks are approaching or moving away from each other, the clamping blocks are slidably connected to the guide rod, and the guide rod enables the clamping blocks to move smoothly, thereby preventing the clamping blocks from loosening, thereby causing deviation in the force applied by the clamping blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an anti-relaxation clamp system for an ultra-high pressure valve according to an embodiment of the present invention is shown.

[0022] Markings in the accompanying drawings: 1. Clamping frame; 11. First power device; 12. Second power device; 13. First drive wheel; 14. Second drive wheel; 15. Coupling; 16. Frame slot; 2. Rotating rod; 21. First tooth profile; 3. Sleeve; 31. Slider; 4. Power rod; 41. Second tooth profile; 5. Connecting frame; 51. Guide rod; 6. Clamping block; 61. Guide rail; 7. Transmission rod; 71. First transmission wheel; 72. Second transmission wheel; 8. Thin film sensor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0024] Figure 1 The structure diagram of the anti-loosening clamp block system for ultra-high pressure valves according to an embodiment of the present invention is shown. Figure 1 As shown, the present invention discloses an anti-relaxation clamping block system for an ultra-high pressure valve.

[0025] The anti-loosening clamp block system for ultra-high pressure valves is arranged in the ultra-high pressure valves to connect the push rod and the valve stem. The anti-loosening clamp block system for ultra-high pressure valves comprises: a clamping frame 1 arranged at the lower end of the push rod in the up-down direction, a rotating rod 2 arranged in the clamping frame 1 in a vertical direction, a sleeve 3 arranged on the rotating rod 2 in a vertical direction, a power rod 4 arranged in the clamping frame 1 in a vertical direction, a connecting frame 5 arranged in a rotational direction at the lower end of the clamping frame 1, and a clamping block 6 arranged on the connecting frame 5 for relative movement.

[0026] Among them, the push rod is set in the up-down direction, the valve stem is set in the up-down direction, and the push rod is located above the valve stem. The ultra-high pressure valve is connected to the lower end of the push rod with an anti-loosening clamping block system, and the ultra-high pressure valve clamps the upper end of the valve stem with an anti-loosening clamping block system to complete the connection between the push rod and the valve stem.

[0027] The rotating rod 2 and the power rod 4 are rotatably arranged in the clamping frame 1 through the bearing seat. The power rod 4 is connected to the sleeve 3. The rotation of the power rod 4 drives the sleeve 3 to move, and the rotation power of the power rod 4 is converted into the power for the sleeve 3 to move up and down. The sleeve 3 drives the clamping blocks 6 to approach each other to clamp the valve stem, and the power of the sleeve 3 moving up and down is converted into the power for the clamping blocks 6 to move horizontally. The clamping blocks 6 approach each other to apply a clamping force to the valve stem.

[0028] The rotation of the rotating rod 2 drives the connecting frame 5 to rotate, and the connecting frame 5 drives the clamping block 6 to rotate, and the clamping block 6 rotates around the valve stem.

[0029] The position where the clamping block 6 abuts against the valve stem and the position where the clamping block 6 clamps the valve stem are respectively provided with a film sensor 8. A step is formed at the upper end of the valve stem, and a groove is formed around the upper end of the valve stem. The film sensor 8 is provided at the step and the groove.

[0030] When the push rod pushes the anti-relaxation clamping block system of the ultra-high pressure valve close to the valve stem, the clamping block 6 abuts against the step position, and the clamping block 6 clamps the embedded groove. The film sensor 8 contacts and senses the pressure of the clamping block 6.

[0031] When the pressure of the clamping block 6 sensed by the film sensor 8 at the step position is different, it means that the valve stem is tilted, causing the end face of the valve stem to be unable to be horizontal. When the pressure of the clamping block 6 sensed by the film sensor 8 at the groove position is different, it means that the position of the valve stem is offset and the valve stem cannot be installed coaxially with the push rod. At this time, by adjusting the angle and position of the valve stem, the valve stem can be installed horizontally and coaxially with the push rod.

[0032] After the adjustment is completed, the clamping block 6 is driven to rotate a certain angle or a certain number of turns to observe the change in the pressure of the clamping block 6 sensed by the film sensor 8. If the change range exceeds the set range, continue to adjust the valve stem. If the change range does not exceed the set range, there is no need to adjust the valve stem.

[0033] When the connection between the push rod, the valve stem and the anti-relaxation clamp block system for ultra-high pressure valves becomes loose, the clamp block 6 will gradually break away from the contact with the film sensor 8, and the pressure of the clamp block 6 sensed by the film sensor 8 will gradually decrease. When the pressure of the clamp block 6 drops to the set value, the anti-relaxation clamp block system for ultra-high pressure valves drives the clamp blocks 6 to move closer to each other again. Since the side of the groove on the valve stem is an inclined surface, when the clamp blocks 6 move closer to each other, the clamp blocks 6 abut against the upper step of the valve stem.

[0034] A first power device 11 and a second power device 12 are disposed at the upper end of the clamping frame 1. For example, the first power device 11 is a motor. A first driving wheel 13 is disposed at the driving end of the first power device 11. A second driving wheel 14 is disposed at the upper end of the rotating rod 2. The first driving wheel 13 meshes with the second driving wheel 14.

[0035] Exemplarily, the second power device 12 is a motor. A coupling 15 is provided at the driving end of the second power device 12 , and the coupling 15 is connected to the power rod 4 .

[0036] A transmission rod 7 is arranged in the clamping frame 1 for rotation in the left and right directions. A first transmission wheel 71 and a second transmission wheel 72 are arranged on the transmission rod 7. The first transmission wheel 71 and the second transmission wheel 72 are distributed left and right. The sleeve 3 is formed with a first tooth shape 21 in parallel, and the power rod 4 is formed with a second tooth shape 41 in a spiral. The first transmission wheel 71 meshes with the first tooth shape 21, and the second transmission wheel 72 meshes with the second tooth shape 41.

[0037] The second power device 12 drives the power rod 4 to rotate through the coupling 15, and the second transmission wheel 72 engages the second tooth shape 41, the power rod 4 drives the transmission rod 7 to rotate, and the first transmission wheel 71 engages the first tooth shape 21, the transmission rod 7 drives the sleeve 3 to move up and down along the rotating rod 2, and the sleeve 3 drives the clamping blocks 6 to move closer to or away from each other. When the clamping blocks 6 move closer to each other, the clamping blocks 6 clamp the valve stem. When the clamping blocks 6 move away from each other, the clamping blocks 6 release the clamping of the valve stem.

[0038] A frame groove 16 is formed on one side of the clamping frame 1 close to the push rod, and the rotating rod 2 passes through the frame groove 16. The frame groove 16 is formed on the upper surface of the clamping frame 1, and the upper end of the rotating rod 2 extends upward through the frame groove 16.

[0039] The clamping frame 1 is installed at the lower end of the push rod, the lower end of the push rod is inserted into the frame groove 16, and the outer surface of the push rod contacts the inner surface of the frame groove 16. The rotating rod 2 is inserted into the lower end of the push rod, the rotating rod 2 rotates along the inside of the push rod, the rotating rod 2 contacts the inside of the push rod, and the push rod is inserted into the frame groove 16 by inserting the rotating rod 2 into the push rod, thereby completing the coaxial installation of the clamping frame 1 and the push rod, thereby ensuring the coaxial installation between the push rod and the valve stem.

[0040] The sleeve 3 is provided with a slide block 31, the clamping block 6 is provided with a guide rail 61 which is inclined, and the slide block 31 is slidably connected to the guide rail 61. The guide rail 61 is inclined inward from top to bottom.

[0041] When the sleeve 3 drives the slider 31 to move downward, the slider 31 slides along the guide rail 61, and the slider 31 pushes the clamping blocks 6 away from each other. When the sleeve 3 drives the slider 31 to move upward, the slider 31 slides along the guide rail 61, and the slider 31 pulls the clamping blocks 6 closer to each other.

[0042] A guide rod 51 is arranged in the horizontal direction in the connecting frame 5, and the guide rod 51 passes through the clamping block 6. When the clamping blocks 6 are approaching or moving away from each other, the clamping blocks 6 are slidably connected to the guide rod 51, and the clamping blocks 6 can move smoothly through the guide rod 51, so as to avoid the clamping blocks 6 from loosening, thereby causing deviation of the force applied by the clamping blocks 6.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A clamping block system for preventing relaxation of ultra-high pressure valves, which is arranged in the ultra-high pressure valve and connects the push rod and the valve stem; characterized in that: include: A clamping frame (1) is arranged on the push rod; A rotating rod (2) rotatably disposed in the clamping frame (1); A sleeve (3) is movably mounted on the rotating rod (2); A power rod (4) rotatably disposed in the clamping frame (1); A connecting frame (5) rotatably arranged on the clamping frame (1); A clamping block (6) is relatively movably arranged on the connecting frame (5); The rotation of the rotating rod (2) drives the connecting frame (5) to rotate, and the clamping block (6) rotates around the valve stem; the power rod (4) is connected to the sleeve (3), and the rotation of the power rod (4) drives the sleeve (3) to move, and the sleeve (3) drives the clamping blocks (6) to move closer to each other to clamp the valve stem.

2. The anti-loosening clamp system for ultra-high pressure valves according to claim 1, characterized in that: A first power device (11) and a second power device (12) are arranged in the clamping frame (1); a first driving wheel (13) is arranged at a driving end of the first power device (11); a second driving wheel (14) is arranged on the rotating rod (2); the first driving wheel (13) is engaged with the second driving wheel (14); a coupling (15) is arranged at the driving end of the second power device (12), and the coupling (15) is connected to the power rod (4).

3. The anti-loosening clamp system for ultra-high pressure valves according to claim 2, characterized in that: The clamping frame (1) forms a frame groove (16) on one side close to the push rod; the rotating rod (2) passes through the frame groove (16); the rotating rod (2) is inserted into the push rod, and the push rod is inserted into the frame groove (16).

4. The anti-loosening clamp system for ultra-high pressure valves according to claim 2, characterized in that: A transmission rod (7) is rotatably arranged inside the clamping frame (1); a first transmission wheel (71) and a second transmission wheel (72) are arranged on the transmission rod (7); a first tooth shape (21) is formed in parallel on the sleeve (3), and a second tooth shape (41) is spirally formed on the power rod (4); the first transmission wheel (71) meshes with the first tooth shape (21); and the second transmission wheel (72) meshes with the second tooth shape (41).

5. The anti-loosening clamp system for ultra-high pressure valves according to claim 2, characterized in that: A slider (31) is arranged on the sleeve (3); a guide rail (61) is arranged obliquely on the clamping block (6); and the slider (31) is slidably connected to the guide rail (61).

6. The anti-loosening clamp system for ultra-high pressure valves according to claim 5, characterized in that: A guide rod (51) is arranged inside the connecting frame (5); and the clamping block (6) is slidably connected to the guide rod (51).

7. The anti-loosening clamp system for ultra-high pressure valves according to claim 2, characterized in that: A film sensor (8) is respectively arranged at the position where the clamping block (6) abuts against the valve stem and at the position where the clamping block (6) clamps the valve stem; the film sensor (8) contacts and senses the pressure of the clamping block (6).

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