Valve element driving device of ultra-large vacuum valve

Abstract

The utility model relates to the technical field of vacuum valves, in particular to a valve core driving device of an ultra-large vacuum valve, which comprises a trolley platform, a guide rail paved at the bottom of the trolley platform, a support frame positioned at the top of the trolley platform and connected with the trolley platform in a sliding manner, and a valve core driving device of the ultra-large vacuum valve, the trolley platform is fixedly provided with a driving device, the driving device drives the supporting frame to slide in the direction perpendicular to the guide rail, and the two ends of the supporting frame are provided with vertically-arranged stand columns. According to the valve element driving device, a traditional driving unit with limited stroke such as an electric cylinder, an air cylinder or a hydraulic cylinder is replaced, the valve element is not affected by deformation in the moving process, the jamming condition is avoided, and the stability of an ultra-large valve element in the driving process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum valve technical field especially relates to a valve core drive arrangement of super large vacuum valve. BACKGROUND

[0002] The super large vacuum valve is applied to the pipeline vacuum sealing of large project field, and its structure is complex and difficult to manufacture.

[0003] The traditional valve core movement mechanism is driven by the driving unit (electric cylinder, air cylinder, hydraulic cylinder, etc.) fixed on the valve shell, and the valve core is indirectly driven by the connecting rod.

[0004] Therefore, it is necessary to provide a valve core drive arrangement of super large vacuum valve to improve the stability of the super large valve core during driving. SUMMARY

[0005] The utility model discloses a valve core drive arrangement of super large vacuum valve, which can solve the problem of the traditional valve core movement mechanism that is easy to be stuck during driving the valve core of the large vacuum valve.

[0006] The technical scheme of the utility model is:

[0007] A valve core drive arrangement of super large vacuum valve, comprising a trolley platform and a guide rail laid on the bottom of the trolley platform, the trolley platform moves along the guide rail, further comprising a support frame, the support frame is located on the top of the trolley platform and is slidably connected with the trolley platform, the trolley platform is fixedly installed with a driving device, and the driving device drives the support frame to slide in the direction perpendicular to the guide rail.

[0008] The support frame is provided with vertical columns at both ends, one end of each column is fixedly connected with the support frame, the other end of each column is provided with an ear seat, a valve core is arranged between the columns, pin shafts are arranged on both sides of the valve core, ear holes are formed in the ear seats to accommodate the pin shafts, and the pin shafts are inserted into the ear holes and rotatably connected with the ear seats.

[0009] Further, the pin shafts are provided with reinforcing ribs at the connection positions with the valve core, one end of each reinforcing rib is fixedly connected with the pin shaft, and the other end of the reinforcing rib is fixedly connected with the valve core.

[0010] Further, the reinforcing ribs are horizontally arranged, and each reinforcing rib is parallel to the axis of the pin shaft.

[0011] Furthermore, each pin shaft has three corresponding reinforcing ribs.

[0012] Furthermore, an oblique bracket is provided at the angle between the column and the support frame, one end of the oblique bracket is fixedly connected to the column, and the other end of the oblique bracket is fixedly connected to the support frame.

[0013] Furthermore, the trolley platform is provided with two driving devices, and the two driving devices are parallel to each other.

[0014] Furthermore, the driving device is a telescopic air cylinder or a telescopic hydraulic cylinder.

[0015] Furthermore, the support frame and the trolley platform are slidably connected via guide rails.

[0016] Furthermore, a roller that moves along the guide rail is provided at the bottom of the trolley platform, and a limiting groove that matches the guide rail is opened on the roller, and the limiting groove is stuck on the guide rail.

[0017] Furthermore, laser ranging sensors are installed at both ends of the trolley platform.

[0018] The utility model relates to a valve core driving device of an ultra-large vacuum valve, wherein a guide rail is laid inside the valve so that the trolley platform can move along the guide rail, so that the support frame and the valve core on the trolley platform can move horizontally, and the driving device can push the support frame to slide relative to the trolley platform, and the sliding direction is perpendicular to the direction of the guide rail, so that the valve core on the support frame can approach or move away from the valve along its own axis direction, and the column can provide support for the valve core, and at the same time the pin shaft is rotatably connected to the ear seat, so that the valve core can adjust its own inclination angle according to the position of the valve. When the driving device drives the valve core to seal the valve, the valve core better fits the valve by adjusting its own inclination angle to achieve valve sealing. Compared with traditional technology, this technical solution realizes horizontal movement of the support frame and the valve core through the trolley platform and the guide rail, replacing traditional driving units with limited stroke such as electric cylinders, air cylinders or hydraulic cylinders, so that the valve core movement process will not be affected by deformation, thus avoiding jamming and ensuring the stability of the ultra-large valve core during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a reference diagram of the closed state structure of the utility model;

[0020] Figure 2 This is a reference diagram of the structure of the utility model in the open state;

[0021] Figure 3 For this utility model Figure 1 A partial enlarged view of the middle part;

[0022] Figure 4 For this utility model Figure 1 A partial enlarged view of point B in the middle.

[0023] Figure numerals: 1. trolley platform; 2. guide rail; 3. support frame; 4. driving device; 5. column; 6. ear seat; 7. valve core; 8. pin shaft; 9. reinforcing rib; 10. inclined bracket; 11. limiting groove. DETAILED DESCRIPTION

[0024] In order to make the technical means, technical features, purpose of the utility model and technical effects achieved by the utility model easier to understand, the utility model is further explained below with reference to specific illustrations.

[0025] Example 1:

[0026] like Figure 1 and Figure 2 As shown, this embodiment provides a valve core driving device for an ultra-large vacuum valve, including a trolley platform 1 and a guide rail 2 laid on the bottom of the trolley platform 1, the guide rail 2 is fixed to the bottom of the valve with screws, and the trolley platform 1 moves along the guide rail 2, and also includes a support frame 3, the support frame 3 is located on the top of the trolley platform 1 and is slidably connected to the trolley platform 1, the trolley platform 1 is screw-fixed with a driving device 4, the driving device 4 drives the support frame 3 to slide in a direction perpendicular to the guide rail 2, and vertically placed columns 5 are provided at both ends of the support frame 3, one end of each column 5 is screwed or welded to the support frame 3, and the other end of each column 5 is screwed or welded to the support frame 3. The end is screwed or welded with an ear seat 6, a valve core 7 is provided between the columns 5, and pin shafts 8 are provided on both sides of the valve core 7. An ear hole for accommodating the pin shaft 8 is opened on the ear seat 6, and the pin shaft 8 is inserted into the ear hole and rotatably connected to the ear seat 6 through a bearing. It should be noted that the trolley platform 1 should be connected to a winch or other traction equipment during use to ensure that the trolley platform 1 has power so that it can move along the guide rail 2. Since winches and other traction equipment are relatively mature technical means and are relatively common on the market, technicians in this field can choose the model and type of winch according to the specific usage situation, which will not be repeated here in this article.

[0027] Preferably, Figure 4 As shown, a reinforcing rib 9 is provided at the connection between the pin shaft 8 and the valve core 7, one end of the reinforcing rib 9 is screwed or welded to the pin shaft 8, and the other end of the reinforcing rib 9 is screw-fixed or welded to the valve core 7. Preferably, the reinforcing rib 9 is placed horizontally, and each reinforcing rib 9 is parallel to the axis of the pin shaft 8. Preferably, each pin shaft 8 corresponds to 3 reinforcing ribs 9, and the reinforcing rib 9 can increase the contact area between the pin shaft 8 and the valve core 7, improve the structural strength, and ensure the structural stability.

[0028] Preferably, an inclined bracket 10 is provided at the angle between the column 5 and the support frame 3, one end of the inclined bracket 10 is fixedly connected or welded to the column 5 by screws, and the other end of the inclined bracket 10 is fixedly connected or welded to the support frame 3 by screws. The inclined bracket 10 can provide auxiliary support for the column 5, share the pressure of the valve core 7 on the column 5, improve the structural stability, and ensure the supporting strength of the column 5 on the valve core 7.

[0029] Preferably, Figure 1 and Figure 3 As shown, the trolley platform 1 is provided with two driving devices 4, and the two driving devices 4 are parallel to each other. Preferably, the driving device 4 is a telescopic cylinder or a telescopic hydraulic cylinder, or an electric cylinder. Whether it is a telescopic cylinder, a telescopic hydraulic cylinder or an electric cylinder, the end of the piston rod or the screw rod is welded or fixedly connected to the support frame 3 by screws, so that the driving device 4 can drive the support frame 3 to move when it is telescopic.

[0030] Preferably, the support frame 3 and the trolley platform 1 are slidably connected via a guide rail 2 .

[0031] Preferably, Figure 3 As shown, a roller that moves along the guide rail 2 is installed at the bottom of the trolley platform 1. A limiting groove 11 that matches the guide rail 2 is opened on the roller. The limiting groove 11 is stuck on the guide rail 2. The limiting groove can provide a limit for the trolley platform 1 to prevent the roller from derailing during the movement of the trolley platform 1, thereby ensuring the movement accuracy of the trolley platform 1.

[0032] Preferably, laser ranging sensors or encoders are fixedly installed on both ends of the trolley platform 1 by screws, which are used to detect the distance between the trolley platform 1 and the two end points, so as to facilitate the judgment of the position of the valve core 7.

[0033] The device is divided into two stages when it is working: opening the valve and closing the valve. When the valve is opened, the driving device 4 shrinks and returns, driving the support frame 3 to move in a direction perpendicular to the guide rail 2 and away from the valve, thereby separating the valve core 7 from the valve. Then, a roller is installed at the bottom of the trolley platform 1, and the roller moves along the guide rail 2, thereby causing the support frame 3 and the valve core 7 to move horizontally as a whole, thereby moving away from the valve, to complete the valve opening stage; when the valve is closed, the trolley platform 1 first moves along the guide rail 2, driving the support frame 3 and the valve core 7 to move horizontally as a whole, so that the valve core 7 is close to the valve. When the valve core 7 moves to When its axis coincides with the axis of the valve, it means that the valve core 7 is aligned with the valve, and the trolley platform 1 stops moving at this time, and then the driving device 4 works, and the piston rod or screw of the driving device 4 extends, thereby driving the support frame 3 to slide on the trolley platform 1, so that the valve core 7 gradually approaches the valve. When the valve core 7 contacts the valve, the valve core 7 can rotate through the pin 8 to adjust its own inclination angle, so that the valve core 7 is aligned and fits the valve. Finally, as the piston rod or screw of the driving device 4 extends, the valve core 7 is pressed against the valve, so that the valve core 7 blocks the valve, completing the closing stage of the valve.

[0034] By laying a guide rail 2 inside the valve, the trolley platform 1 can move along the guide rail 2, so that the support frame 3 and the valve core 7 on the trolley platform 1 can move horizontally, and the driving device 4 can push the support frame 3 to slide relative to the trolley platform 1, and the sliding direction is perpendicular to the direction of the guide rail 2, so that the valve core 7 on the support frame 3 can approach or move away from the valve along its own axis. The column 5 can provide support for the valve core 7, and at the same time, the pin shaft 8 is rotatably connected to the ear seat 6, so that the valve core 7 can adjust its own inclination angle according to the position of the valve. When the driving device 4 drives the valve core 7 to block the valve, the valve core 7 better fits the valve by adjusting its own inclination angle to achieve valve blocking. Compared with traditional technology, this technical solution realizes the horizontal movement of the support frame 3 and the valve core 7 through the trolley platform 1 and the guide rail 2, replacing traditional driving units with limited stroke such as electric cylinders, cylinders or hydraulic cylinders, so that the movement process of the valve core 7 will not be affected by deformation, avoiding jamming, and ensuring the stability of the super-large valve core 7 during driving.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. In other words, any equivalent changes and modifications made within the scope of the present invention's patent application should fall within the technical scope of the present invention.

Claims

1. A valve core driving device for an ultra-large vacuum valve, comprising a trolley platform (1) and a guide rail (2) laid on the bottom of the trolley platform (1), wherein the trolley platform (1) moves along the guide rail (2), and is characterized in that: The vehicle further comprises a support frame (3), the support frame (3) being located on the top of the trolley platform (1) and being slidably connected to the trolley platform (1), the trolley platform (1) being fixedly mounted with a driving device (4), the driving device (4) driving the support frame (3) to slide in a direction perpendicular to the guide rail (2); Vertically placed columns (5) are provided at both ends of the support frame (3), one end of each column (5) is fixedly connected to the support frame (3), and the other end of each column (5) is provided with an ear seat (6), a valve core (7) is provided between the columns (5), and pins (8) are provided on both sides of the valve core (7), and an ear hole for accommodating the pin (8) is opened on the ear seat (6), and the pin (8) is inserted into the ear hole and rotatably connected to the ear seat (6).

2. The valve core driving device of the ultra-large vacuum valve according to claim 1, characterized in that: A reinforcing rib (9) is provided at the connection between the pin shaft (8) and the valve core (7), one end of the reinforcing rib (9) is fixedly connected to the pin shaft (8), and the other end of the reinforcing rib (9) is fixedly connected to the valve core (7).

3. The valve core driving device of the ultra-large vacuum valve according to claim 2, characterized in that: The reinforcing ribs (9) are placed horizontally, and each reinforcing rib (9) is parallel to the axis of the pin (8).

4. The valve core driving device of an ultra-large vacuum valve according to any one of claims 1 to 3, characterized in that: Each pin (8) has three reinforcing ribs (9) correspondingly.

5. The valve core driving device of the super-large vacuum valve according to claim 1, characterized in that: An oblique bracket (10) is provided at an angle between the upright column (5) and the support frame (3), one end of the oblique bracket (10) is fixedly connected to the upright column (5), and the other end of the oblique bracket (10) is fixedly connected to the support frame (3).

6. The valve core driving device for an ultra-large vacuum valve according to claim 1, characterized in that: The trolley platform (1) is provided with two driving devices (4), and the two driving devices (4) are parallel to each other.

7. The valve core driving device of the super-large vacuum valve according to claim 6, characterized in that: The driving device (4) is a telescopic air cylinder or a telescopic hydraulic cylinder.

8. The valve core driving device for an ultra-large vacuum valve according to claim 1, characterized in that: The support frame (3) and the trolley platform (1) are slidably connected via a guide rail (2).

9. The valve core driving device for an ultra-large vacuum valve according to claim 1, characterized in that: The bottom of the trolley platform (1) is provided with a roller that moves along the guide rail (2), and the roller is provided with a limiting groove (11) that matches the guide rail (2), and the limiting groove (11) is stuck on the guide rail (2).

10. The valve core driving device of the super-large vacuum valve according to claim 1, characterized in that: Laser distance measuring sensors are installed at both ends of the trolley platform (1).

Images