Pressing mechanism of all-welded ball valve

Abstract

The utility model relates to the technical field of pressing mechanisms of ball valves, in particular to a pressing mechanism of an all-welded ball valve. According to the technical scheme, the device comprises a water tank and a mounting plate rotationally mounted in the water tank, and further comprises a pressing mechanism mounted on the mounting plate, two ball valves and a connecting auxiliary mechanism are mounted on the mounting plate, the connecting auxiliary mechanism fixes the joint of the two ball valves, the connecting auxiliary mechanism comprises a lifting assembly and a fixing assembly, and the lifting assembly is fixedly connected with the fixing assembly. And the two hydraulic driving mechanisms are in one-to-one correspondence with the lifting assembly and the fixing assembly. According to different ball valves, the position of the fixing assembly can be adjusted through the lifting assembly, so that the fixing assembly is located between the two ball valves, then the joint of the two ball valves is fixed through the fixing assembly, the two ball valves are kept in the centering position, and the temperature performance of testing can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of a pressing mechanism of a ball valve, in particular to a pressing mechanism of a fully welded ball valve. Background Art

[0002] The fully welded ball valve is a type of valve with a wide range of industrial uses. With its unique structure and design, it plays an important role in the petroleum, chemical, natural gas and power industries. The main feature of the fully welded ball valve is that the welding between the ball and the valve body is fully welded, which ensures that the valve has very good sealing performance when opening and closing, and also enables the ball valve to withstand higher pressures and temperatures. Ball valve pressing usually refers to the process of pressure testing the ball valve to ensure the integrity of the ball valve in design and manufacturing, and that it can withstand the design pressure without leakage in actual application.

[0003] When pressing a ball valve, you first need to install the ball valve on the mounting plate and keep the ball valve sealed. Then, drive the mounting plate to place the ball valve in water, and then apply air pressure to the inside of the ball valve. By observing whether bubbles appear in the water, you can determine whether the ball valve is leaking. However, when testing a large number of ball valves, only a single ball valve can be fixed for testing at a time. In order to improve the test efficiency, two ball valves can be stacked together for testing. However, the existing device does not have a mechanism to fix the two ball valves after stacking them together, so as to ensure the stability between the two stacked ball valves. Utility Model Content

[0004] The purpose of the utility model is to address the problem mentioned in the background technology that when testing a large number of ball valves, only a single ball valve can be fixed and tested at a time, and to propose a pressing mechanism for a fully welded ball valve that can test individual ball valves on one side and fix the connections between the ball valves.

[0005] The technical solution of the utility model is: a pressing mechanism of a fully welded ball valve, comprising a water tank, a mounting plate rotatably mounted in the water tank, and also comprising:

[0006] A pressing mechanism installed on a mounting plate, two ball valves are installed on the mounting plate, and the pressing mechanism presses and fixes the ball valves;

[0007] A connection auxiliary mechanism, the connection auxiliary mechanism fixes the connection of the two ball valves to keep the two ball valves in a centering position, the connection auxiliary mechanism includes a lifting component and a fixing component, the fixing component fixes the arc surface of the ball valve, and the lifting component controls the height of the fixing component;

[0008] Two hydraulic drive mechanisms, the two hydraulic drive mechanisms correspond to the lifting assembly and the fixing assembly one by one, and the hydraulic drive mechanisms provide power for the lifting assembly and the fixing assembly.

[0009] Optionally, two columns are fixedly mounted on the mounting plate, and support plates are fixedly mounted on the two columns.

[0010] Optionally, the pressing mechanism includes a first hydraulic rod fixedly mounted on the support plate and a pressing head fixedly mounted on the first hydraulic rod.

[0011] Optionally, the lifting assembly includes a slider slidably mounted on a column, two first slide cylinders fixedly mounted on a mounting plate, and a first driving rod slidably mounted in the first slide cylinder, a first joint is provided on the first slide cylinder, a first spring is fixedly mounted on the first driving rod, the other end of the first spring is fixedly connected to the first slide cylinder, and the first driving rod is fixedly connected to the slider.

[0012] Optionally, the fixed assembly includes a diverter box fixedly mounted on the slider, a plurality of second slide cylinders fixedly mounted on the diverter box, a second drive rod slidably mounted on the second slide cylinder, a limit rod fixedly mounted on the second drive rod, and a second spring fixedly mounted on the second drive rod, the other end of the second spring is fixedly connected to the second slide cylinder, and a second joint is provided on the diverter box.

[0013] Optionally, the hydraulic drive mechanism includes a support seat fixedly mounted on one side of the water tank, an oil tank fixedly mounted on the support seat, a pressure plate slidably mounted in the oil tank, an oil pipe fixedly mounted on the oil tank, a valve fixedly mounted on the oil pipe, and a three-way joint fixedly mounted on the oil pipe, wherein two third joints are provided on the three-way joint, a base plate is fixedly mounted on the support seat, a handle is rotatably mounted on the base plate, a drive rod is rotatably mounted on the pressure plate, the other end of the drive rod is rotatably connected to the handle, and hydraulic oil is provided in the oil tank.

[0014] Optionally, a pipeline is connected between the two third joints on one of the three-way joints and the two first joints, and a pipeline is connected between the two third joints on the other three-way joint and the two second joints.

[0015] Optionally, a flipping mechanism is installed on the water tank, and the flipping mechanism drives the mounting plate to rotate. The flipping mechanism includes a driving shaft rotatably installed in the water tank, the driving shaft is fixedly connected to the mounting plate, a driving plate is fixedly installed on the driving shaft, a second hydraulic rod is rotatably installed on the water tank, and the output shaft of the second hydraulic rod is rotatably connected to the driving plate.

[0016] Optionally, a first sealing gasket is placed between the two ball valves.

[0017] Optionally, a second sealing gasket is fixedly mounted on the mounting plate, and a third sealing gasket is fixedly mounted on the pressure head.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] By connecting the auxiliary mechanism, two ball valves can be stacked together for pressure testing, which can effectively improve the test efficiency and is suitable for large-scale testing;

[0020] For different ball valves, the position of the fixing component can be adjusted by the lifting component so that the fixing component is located between the two ball valves. Then the connection between the two ball valves can be fixed by the fixing component and the two ball valves can be kept in the center position to ensure the temperature resistance of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the utility model is given Figure 1 ;

[0022] Figure 2 A schematic diagram of the structure of an embodiment of the utility model is given Figure 2 ;

[0023] Figure 3 A schematic diagram of the structure of an embodiment of the utility model is given Figure 3 ;

[0024] Figure 4 A structural schematic diagram of the slider of the utility model is given;

[0025] Figure 5 A structural schematic diagram of the fixing assembly of the utility model is given;

[0026] Figure 6 A structural schematic diagram of the hydraulic drive mechanism of the utility model is given;

[0027] Figure 7 for Figure 4 A partial enlarged view of the middle A;

[0028] Figure 8 for Figure 5 A partial enlarged view of point B in the middle.

[0029] 1. Water tank; 2. Drive shaft; 201. Mounting plate; 3. Column; 301. Support plate; 302. First hydraulic rod; 303. Pressure head; 4. Second hydraulic rod; 401. Drive plate; 5. Slider; 501. First slide cylinder; 502. First drive rod; 503. First joint; 504. First spring; 6. Diverter box; 601. Second slide cylinder; 602. Second drive rod; 603. Limit rod; 604. Second spring; 605. Second joint; 7. Ball valve; 8. Oil tank; 801. Oil pipe; 802. Valve; 803. Three-way joint; 804. Third joint; 805. Base plate; 806. Handle; 807. Drive rod; 808. Support seat; 809. Press plate; 9. First gasket; 10. Second gasket; 1001. Third gasket. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1-3 As shown, the present invention proposes a pressing mechanism for a fully welded ball valve, comprising a water tank 1, a mounting plate 201 rotatably mounted in the water tank 1, water being provided in the water tank 1, and the mounting plate 201 being used to support the ball valve 7. A flip mechanism is mounted on the water tank 1, and the flip mechanism drives the mounting plate 201 to rotate, and the flip mechanism comprises a driving shaft 2 rotatably mounted in the water tank 1, the driving shaft 2 is fixedly connected to the mounting plate 201, a driving plate 401 is fixedly mounted on the driving shaft 2, a second hydraulic rod 4 is rotatably mounted on the water tank 1, and an output shaft of the second hydraulic rod 4 is rotatably connected to the driving plate 401. Starting the second hydraulic rod 4 to extend and retract can drive the driving plate 401 to flip, and the flipped driving plate 401 will drive the driving shaft 2 to rotate, and the rotating driving shaft 2 can drive the mounting plate 201 to rotate, and the rotating mounting plate 201 can drive the ball valve 7 installed on the mounting plate 201 to flip, so that the ball valve 7 enters the water inside the water tank 1, and then the ball valve is pressurized and tested (the pressure testing device inside the ball valve 7 is prior art and will not be elaborated here).

[0033] like Figure 2-4As shown, it also includes a pressing mechanism installed on the mounting plate 201, on which two ball valves 7 are installed, and the pressing mechanism presses and fixes the ball valves 7, and a first sealing gasket 9 is placed between the two ball valves 7. Two columns 3 are fixedly installed on the mounting plate 201, and a support plate 301 is fixedly installed on the two columns 3. The pressing mechanism includes a first hydraulic rod 302 fixedly installed on the support plate 301, and a pressure head 303 fixedly installed on the first hydraulic rod 302. The two ball valves 7 are placed on the mounting plate 201, and the two ball valves 7 are stacked together, and a first sealing gasket 9 is placed between the two ball valves 7. The first sealing gasket 9 is placed between the two ball valves 7 to prevent air leakage and prevent the two ball valves 7 from being squeezed and damaged by each other. The first hydraulic rod 302 drives the pressure head 303 to press down, and then the pressure head 303 applies pressure to the two ball valves 7, and then the ball valves 7 are fixed.

[0034] The second sealing gasket 10 is fixedly mounted on the mounting plate 201, and the third sealing gasket 1001 is fixedly mounted on the pressure head 303. The second sealing gasket 10 ensures the sealing between the ball valve 7 and the mounting plate 201, and the third sealing gasket 1001 ensures the sealing between the ball valve 7 and the pressure head 303.

[0035] like Figure 3-5 and Figure 7-8 As shown, the connection auxiliary mechanism fixes the connection of the two ball valves 7 so that the two ball valves are kept in the center position. The connection auxiliary mechanism includes a lifting component and a fixing component. The fixing component fixes the arc surface of the ball valve 7, and the lifting component controls the height of the fixing component. For different ball valves 7, the position of the fixing component is adjusted by the lifting component so that the fixing component is located between the two ball valves 7, and then the connection of the two ball valves 7 is fixed by the fixing component, and the two ball valves 7 are kept in the center position.

[0036] The lifting assembly includes a slider 5 slidably mounted on the column 3, two first slides 501 fixedly mounted on the mounting plate 201, and a first driving rod 502 slidably mounted in the first slide 501. The first slide 501 is provided with a first joint 503, and the first driving rod 502 is fixedly mounted with a first spring 504. The other end of the first spring 504 is fixedly connected to the first slide 501, and the first driving rod 502 is fixedly connected to the slider 5. When hydraulic oil is transported to the inside of the first slide 501 through the first joint 503, the hydraulic oil entering the inside of the first slide 501 will lift the first driving rod 502, thereby driving the first driving rod 502 to rise, and then the slider 5 will rise. When the outside world does not apply pressure to the hydraulic oil, under the action of the gravity of the first spring 504 and the slider 5, the first driving rod 502 can press out the hydraulic oil inside the first slide 501, thereby causing the slider 5 to descend.

[0037] Among them, the fixed component includes a diverter box 6 fixedly installed on the slider 5, a plurality of second slide cylinders 601 fixedly installed on the diverter box 6, a second driving rod 602 slidably installed on the second slide cylinder 601, a limiting rod 603 fixedly installed on the second driving rod 602, and a second spring 604 fixedly installed on the second driving rod 602. The other end of the second spring 604 is fixedly connected to the second slide cylinder 601, and a second joint 605 is provided on the diverter box 6. When the hydraulic oil is under pressure and enters the inside of the diverter box 6 through the second joint 605, the hydraulic oil entering the diverter box 6 will enter the inside of the multiple second slides 601, and under the action of the hydraulic pressure, push the second drive rod 602 to move in the direction close to the ball valve 7, thereby driving the limit rod 603 to contact the ball valve, and when one of the limit rods 603 contacts the ball valve 7, the limit rod 603 will be unable to move. At this time, the hydraulic oil that continues to enter will move in the direction of the movable second drive rod 602, so that the multiple limit rods 603 can all contact the ball valve 7. Under the action of the multiple limit rods 603 squeezing the two ball valves, the ball valve 7 can be fixed and the two ball valves 7 can be kept centered.

[0038] like Figure 6As shown, there are two hydraulic drive mechanisms, and the two hydraulic drive mechanisms correspond to the lifting assembly and the fixed assembly one by one, and the hydraulic drive mechanisms provide power for the lifting assembly and the fixed assembly. The hydraulic drive mechanism includes a support seat 808 fixedly mounted on one side of the water tank 1, an oil tank 8 fixedly mounted on the support seat 808, a pressure plate 809 slidably mounted in the oil tank 8, an oil pipe 801 fixedly mounted on the oil tank 8, a valve 802 fixedly mounted on the oil pipe 801, and a three-way joint 803 fixedly mounted on the oil pipe 801, and two third joints 804 are provided on the three-way joint 803, a base plate 805 is fixedly mounted on the support seat 808, a handle 806 is rotatably mounted on the base plate 805, a driving rod 807 is rotatably mounted on the pressure plate 809, and the other end of the driving rod 807 is rotatably connected to the handle 806, and hydraulic oil is provided in the oil tank 8. A pipeline is connected between the two third joints 804 on one of the three-way joints 803 and the two first joints 503, and a pipeline is connected between the two third joints 804 on the other three-way joint 803 and the two second joints 605. Pressing the handle 806 drives the driving rod 807 to rise, thereby driving the pressing plate 809 to rise, and vice versa, the pressing plate 809 can be driven to descend. When the valve 802 is open, the hydraulic oil under the pressing plate 809 can be squeezed into the third joints 804 by descending the pressing plate 809, and enters the inside of the diverter box 6 or the first slide 501. When the valve 802 is closed, the hydraulic oil inside the diverter box 6 and the first slide 501 will not be able to flow back, thereby making the first driving rod 502 and the second driving rod 602 unable to move, thereby fixing the height of the slider 5 and fixing the multiple limit rods 603.

[0039] Working principle: Place two ball valves 7 on the mounting plate 201 and stack the two ball valves 7 together, and place the first sealing gasket 9 between the two ball valves 7. Press the handle 806 to drive the driving rod 807 to rise, squeeze the hydraulic oil from the lower direction of the pressing plate 809 into the third joint 804, and enter the first slide cylinder 501. The hydraulic oil entering the first slide cylinder 501 will lift the first driving rod 502, thereby driving the first driving rod 502 to rise, and then the slider 5 will rise. When multiple limit rods 60 3 moves to the middle of the two ball valves 7, closes the corresponding valve 802, and then presses another handle 806, so that the hydraulic oil is pressurized to enter the inside of the diverter box 6. The hydraulic oil entering the diverter box 6 will enter the inside of the multiple second slides 601, and under the action of hydraulic pressure, the second driving rod 602 is pushed to move in the direction close to the ball valve 7, so that the multiple limit rods 603 can all contact the ball valve 7. Under the action of the multiple limit rods 603 squeezing the two ball valves, the ball valve 7 can be fixed and the two ball valves 7 can be kept in the center. The first hydraulic rod 302 drives the pressure head 303 to press down, and then the pressure head 303 applies pressure to the two ball valves 7, thereby fixing the ball valve 7. Start the second hydraulic rod 4 to drive the driving plate 401 to flip, which can drive the ball valve 7 installed on the mounting plate 201 to flip, so that the ball valve 7 enters the water inside the water tank 1, and then the ball valve is pressurized.

[0040] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A pressing mechanism for a fully welded ball valve, comprising a water tank (1) and a mounting plate (201) rotatably mounted in the water tank (1), characterized in that: Also includes: A pressing mechanism installed on a mounting plate (201), two ball valves (7) being installed on the mounting plate (201), the pressing mechanism pressing and fixing the ball valves (7); A connection auxiliary mechanism, the connection auxiliary mechanism fixes the connection between the two ball valves (7) so that the two ball valves maintain a centering position, the connection auxiliary mechanism comprises a lifting component and a fixing component, the fixing component fixes the arc surface of the ball valve (7), and the lifting component controls the height of the fixing component; Two hydraulic drive mechanisms, the two hydraulic drive mechanisms correspond to the lifting assembly and the fixing assembly one by one, and the hydraulic drive mechanisms provide power for the lifting assembly and the fixing assembly.

2. A pressing mechanism for a fully welded ball valve according to claim 1, characterized in that: Two columns (3) are fixedly mounted on the mounting plate (201), and support plates (301) are fixedly mounted on the two columns (3).

3. A pressing mechanism for a fully welded ball valve according to claim 2, characterized in that: The pressing mechanism comprises a first hydraulic rod (302) fixedly mounted on a support plate (301) and a pressing head (303) fixedly mounted on the first hydraulic rod (302).

4. A pressing mechanism for a fully welded ball valve according to claim 3, characterized in that: The lifting assembly comprises a slider (5) slidably mounted on a column (3), two first slide cylinders (501) fixedly mounted on a mounting plate (201), and a first driving rod (502) slidably mounted in the first slide cylinder (501), wherein the first slide cylinder (501) is provided with a first joint (503), and the first driving rod (502) is fixedly mounted with a first spring (504), the other end of the first spring (504) is fixedly connected to the first slide cylinder (501), and the first driving rod (502) is fixedly connected to the slider (5).

5. The pressing mechanism of a fully welded ball valve according to claim 4, characterized in that: The fixed component comprises a shunt box (6) fixedly mounted on the slider (5), a plurality of second slide cylinders (601) fixedly mounted on the shunt box (6), a second driving rod (602) slidably mounted on the second slide cylinder (601), a limit rod (603) fixedly mounted on the second driving rod (602), and a second spring (604) fixedly mounted on the second driving rod (602), wherein the other end of the second spring (604) is fixedly connected to the second slide cylinder (601), and a second joint (605) is provided on the shunt box (6).

6. A pressing mechanism for a fully welded ball valve according to claim 5, characterized in that: The hydraulic drive mechanism comprises a support seat (808) fixedly mounted on one side of a water tank (1), an oil tank (8) fixedly mounted on the support seat (808), a pressure plate (809) slidably mounted in the oil tank (8), an oil pipe (801) fixedly mounted on the oil tank (8), a valve (802) fixedly mounted on the oil pipe (801), and a three-way joint (803) fixedly mounted on the oil pipe (801), wherein two third joints (804) are provided on the three-way joint (803), a base plate (805) fixedly mounted on the support seat (808), a handle (806) rotatably mounted on the base plate (805), a driving rod (807) rotatably mounted on the pressure plate (809), and the other end of the driving rod (807) is rotatably connected to the handle (806), and hydraulic oil is provided in the oil tank (8).

7. A pressing mechanism for a fully welded ball valve according to claim 6, characterized in that: A pipeline is connected between the two third joints (804) on one of the three-way joints (803) and the two first joints (503), and a pipeline is connected between the two third joints (804) on the other three-way joint (803) and the two second joints (605).

8. The pressing mechanism of a fully welded ball valve according to claim 7, characterized in that: The water tank (1) is provided with a turnover mechanism, the turnover mechanism drives the mounting plate (201) to rotate, the turnover mechanism comprises a drive shaft (2) rotatably mounted in the water tank (1), the drive shaft (2) is fixedly connected to the mounting plate (201), a drive plate (401) is fixedly mounted on the drive shaft (2), a second hydraulic rod (4) is rotatably mounted on the water tank (1), and an output shaft of the second hydraulic rod (4) is rotatably connected to the drive plate (401).

9. A pressing mechanism for a fully welded ball valve according to claim 8, characterized in that: A first sealing gasket (9) is placed between the two ball valves (7).

10. A pressing mechanism for a fully welded ball valve according to claim 9, characterized in that: A second sealing gasket (10) is fixedly mounted on the mounting plate (201), and a third sealing gasket (1001) is fixedly mounted on the pressure head (303).

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