Valve pressure testing machine with adjustable caliber

Abstract

The utility model discloses a caliber-adjustable valve pressure testing machine, which relates to the technical field of valve pressure testing machines and comprises a detection table, a detection support and a water collection box are fixedly mounted at the top end of the detection table, a pressure difference workpiece is arranged on the detection support, two support frames are arranged in the detection support, and the water collection box is arranged on the water collection box. Adjusting assemblies are arranged between the two supporting frames and the detection support, and positioning assemblies are arranged between the supporting frames and the water collecting box. A good supporting effect can be provided for valves with different lengths and different hole diameters, the adaptability of the device is effectively improved, and meanwhile the influence of the self weight of the valve on valve pressure detection can be effectively avoided. Meanwhile, when the valves with different hole diameters and lengths are fixed, the valves can be accurately positioned, so that the centers of flange rings of the valves and the centers of the differential pressure pieces are located on the same axis, accurate alignment is achieved, manual alignment of operators is not needed, and fixing and sealing of the valves are more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of valve testing presses, in particular to a valve testing press with adjustable caliber. Background Technique

[0002] A valve is a device used to control the direction, pressure, and flow of fluids in a fluid system. It is a device that enables the medium in a piping and equipment to flow or stop and can control its flow rate. The pressure that a valve can withstand and the sealing performance of its end face or interior are very important for the quality of the valve. Currently, the commonly used method is to use a valve testing press to conduct a pressure test on the valve.

[0003] However, before conducting a pressure test on the existing valve testing press, it is necessary to seal the valve to be tested. When sealing and fixing, the valve needs to be lifted, and then the left and right differential pressure workpieces of the valve testing press are used to seal and fix the valve. During fixing, only the operator can manually align the valve with the differential pressure workpiece, which may cause uneven stress and medium leakage during the pressure test, thus affecting the test results. After fixing, the valve is only fixed by the differential pressure workpiece and lacks support. When the pressure is too small, it may slide under the influence of the valve's own gravity, and when the pressure is too large, the valve may be damaged. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a valve testing press with adjustable caliber, which can effectively solve the technical problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A valve testing press with adjustable caliber includes a detection table. A detection support and a water collecting box are fixedly installed at the top of the detection table. A differential pressure workpiece is arranged on the detection support. Two support frames are arranged inside the detection support. An adjusting component is arranged between the two support frames and the detection support. A positioning component is arranged between the support frame and the water collecting box.

[0007] As a further solution of the utility model, a groove is opened at the top of the support frame, and the groove is in a "V" - shaped structure.

[0008] As a further solution of the utility model, the adjusting component includes two cylinders. Both cylinders are installed on the detection table. A moving plate is arranged at the top of the cylinder. Two lead screws are rotatably installed between the two moving plates.

[0009] As a further solution of the utility model, threaded grooves and through grooves are respectively opened on both sides of the bottom end of the support frame, and the positions of the threaded grooves and through grooves of the two support frames are opposite. The support frame is thread - connected with one lead screw through the threaded groove and slidably connected with the other lead screw through the through groove.

[0010] As a further solution of the present utility model, the positioning assembly includes two guide rails, the two guide rails are fixedly installed in the water collecting box, a moving rod is slidably installed on the surface of the guide rail, one side of the moving rod is slidably connected to the support frame, a gear is rotatably installed at the inner top end of the moving rod, a driven rack is slidably installed in the moving rod, the gear is meshed with the driven rack, and active racks are fixedly installed on both sides of the support frame, and the gear is meshed with the active racks.

[0011] As a further solution of the present utility model, a positioning rod is detachably installed between the two driven racks, and a rhombus structure is formed between the positioning rod and the groove of the support frame, and the center of the rhombus is on the same axis as the center of the differential pressure workpiece.

[0012] As a further solution of the present utility model, one end of the lead screw is fixedly installed with a motor, and the two lead screws are symmetrically arranged along the midline of the support frame.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By providing the support frame in cooperation with the adjustment assembly, good support effects can be achieved for valves with different lengths and different apertures, improving the applicability of the device and enabling the valve to obtain good support effects during pressure testing, avoiding the influence of the valve's own weight on the pressure test;

[0015] By providing the support frame in cooperation with the positioning assembly, the center of the valve flange ring can be aligned with the center of the differential pressure component of the device before the valve is fixed, effectively improving the effect of valve fixing and sealing, which is beneficial to subsequent pressure testing. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of a valve testing machine with adjustable aperture according to the present utility model;

[0017] Figure 2 It is a schematic diagram of the detection support structure of a valve testing machine with adjustable aperture according to the present utility model;

[0018] Figure 3 It is a schematic diagram of the adjustment assembly and the support frame of a valve testing machine with adjustable aperture according to the present utility model;

[0019] Figure 4 It is a disassembled schematic diagram of the support frame and the lead screw of a valve testing machine with adjustable aperture according to the present utility model;

[0020] Figure 5 It is a schematic diagram of the positioning assembly structure of a valve testing machine with adjustable aperture according to the present utility model;

[0021] Figure 6 For a valve testing press with adjustable caliber of the present utility model Figure 5 Schematic enlarged view of area A in

[0022] In the figure: 1, operation table; 2, detection table; 3, detection support; 4, water collecting box; 5, support frame; 6, adjustment component; 7, positioning component; 601, moving plate; 602, cylinder; 603, lead screw; 604, thread groove; 605, through groove; 701, guide rail; 702, moving rod; 703, gear; 704, driven rack; 705, driving rack; 706, positioning rod. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] As Figures 1-6 shown, a valve testing press with adjustable caliber includes an operation table 1 for controlling the testing press. A detection table 2 is arranged on one side of the operation table 1. A detection support 3 and a water collecting box 4 are fixedly installed at the top of the detection table 2. A left differential pressure workpiece is fixedly installed on the left side of the detection support 3. A moving crossbeam is slidably installed on the detection support 3, and a right differential pressure workpiece is fixedly installed on the moving crossbeam. One end of the valve is fixed on the left differential pressure workpiece, and then the right differential pressure workpiece is driven by the moving crossbeam to fix the valve. Both the left and right differential pressure workpieces are provided with pipelines for the passage of the medium, so as to detect the sealing performance of the valve. Two support frames 5 are arranged inside the detection support 3 for supporting the valve to prevent the valve from sliding due to its own gravity during the pressure test. An adjustment component 6 is arranged between the two support frames 5 and the detection support 3 for adjusting the height and spacing of the detection support 3 to adapt to valves of different lengths and sizes, thereby improving the applicability of the testing press. A positioning component 7 is arranged between the support frame 5 and the water collecting box 4, so that the centers of different valves on the support frame 5 and the differential pressure workpieces are on the same axis, enabling different valves to be centered and fixed and sealed, thereby improving the stability of the valve during the pressure test.

[0025] In this embodiment, a groove is opened at the top of the support frame 5, and the groove is in a "V" - shaped structure, so that the support frame 5 can well clamp the valve inside the groove for valves of different thicknesses, playing a supporting role and effectively improving the applicability of the support frame 5.

[0026] In this embodiment, the adjusting assembly 6 includes two cylinders 602. Both of the two cylinders 602 are installed on the detection table 2 and are used to control the height of the support frame 5, so that valves of different sizes can be accurately fixed by the differential pressure workpiece. A moving plate 601 is provided at the top end of the cylinder 602. Two lead screws 603 are rotatably installed between the two moving plates 601 and are used to adjust the distance between the two support frames 5, so that the support frames 5 can be clamped on both sides of valves of different lengths to achieve a supporting effect.

[0027] In this embodiment, threaded grooves 604 and through grooves 605 are respectively formed on both sides of the bottom end of the support frame 5 in a penetrating manner, and the positions of the threaded grooves 604 and through grooves 605 of the two support frames 5 are opposite. The support frame 5 is threadedly connected to one lead screw 603 through the threaded groove 604 and is slidably connected to the other lead screw 603 through the through groove 605. The threaded groove 604 is adapted to one lead screw 603, so that the displacement of a single support frame 5 can be controlled by the rotation of a single lead screw 603. The through groove 605 is adapted to the other lead screw 603, so that the other lead screw 603 plays a role in limiting, making the displacement of the support frame 5 more stable.

[0028] In this embodiment, a motor is fixedly installed at one end of the lead screw 603. The motor is located inside the moving plate 601 (not shown in the figure) and is used to drive the lead screw 603 to rotate, thereby controlling the position of the moving plate 601. The two lead screws 603 are symmetrically arranged along the midline of the support frame 5, making the supporting effect of the lead screw 603 on the support frame 5 more stable.

[0029] In this embodiment, the positioning assembly 7 includes two guide rails 701. The two guide rails 701 are fixedly installed in the water collecting box 4. A moving rod 702 is slidably installed on the surface of the guide rail 701. The guide rail 701 plays a role in limiting and guiding, so that the moving rod 702 can only move along the guide rail 701. One side of the moving rod 702 is slidably connected to the support frame 5, so that the moving rod 702 and the support frame 5 move synchronously. When the support frame 5 moves, it will drive the moving rod 702 to displace along the guide rail 701, and the support frame 5 can displace up and down along the moving rod 702 without movement interference. A gear 703 is rotatably installed at the inner top end of the moving rod 702, and a driven rack 704 is slidably installed inside the moving rod 702. The gear 703 is meshed with the driven rack 704. Active racks 705 are fixedly installed on both sides of the support frame 5. The gear 703 is meshed with the active racks 705. When the support frame 5 moves up and down, it will drive the active racks 705 to move synchronously. Through the meshing of the active racks 705 and the gear 703, the gear 703 is driven to rotate, and then through the meshing of the gear 703 and the driven rack 704, the driven rack 704 is driven to displace in the opposite direction of the support frame 5.

[0030] In this embodiment, a positioning rod 706 is detachably installed between two driven racks 704. When the driven racks 704 move, they drive the positioning rod 706 to move. When the positioning rod 706 abuts against the valve, the centers of the valve and the differential pressure workpiece are on the same axis, making the fixed seal more precise and stable, which is beneficial for subsequent pressure tests. A rhombic structure is formed between the positioning rod 706 and the groove of the support frame 5, and the center of the rhombus is on the same axis as the center of the differential pressure workpiece. This ensures that when the positioning rod 706 and the support frame 5 move relative to each other to fix the valve, the fixed valve is on the central axis of the differential pressure workpiece. Therefore, when the differential pressure workpiece fixes different valves, the fixing and sealing effects are better, and it is beneficial for subsequent pressure detection tests.

[0031] It should be noted that the present utility model is a valve testing press with adjustable caliber. When in use, the positioning rod 706 detachably installed between two moving rods 702 is taken out. By starting the motor and controlling the rotation of a single lead screw 603, the corresponding support frame 5 can be controlled to move along the lead screw 603, thereby controlling the distance between the two support frames 5 to adapt to valves of different lengths. Placing the valve in the grooves of the two support frames 5 has a good effect of supporting the valve. When the support frame 5 moves, it will drive the moving rod 702 to move along the guide rail 701 to prevent the moving rod 702 from detaching from the support frame 5.

[0032] The positioning rod 706 is detachably installed into the moving rod 702. The air cylinder 602 is started, and the air cylinder 602 drives the moving plate 601 to move up and down. The moving plate 601 drives the support frame 5 to move, and the support frame 5 drives the driving rack 705 to move up and down synchronously. Through the meshing of the driving rack 705 and the gear 703, the gear 703 is driven to rotate, and the gear 703 drives the driven rack 704 to move, thereby driving the positioning rod 706 and the support frame 5 to move towards or away from each other. When the positioning rod 706 contacts the valve, the positioning rod 706 and the support frame 5 have an effect of fixing and centering the valve. The air cylinder 602 is closed, and at the same time, two motors are started. After driving the valve to abut against the left differential pressure workpiece on the detection support 3, the motors are closed. The right differential pressure workpiece is driven to abut against the valve by moving the crossbeam, which has an effect of fixing and sealing the valve. The valve testing press is started through the operation platform 1 to conduct a pressure test on the valve.

[0033] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A valve testing press with adjustable caliber, comprising a testing table (2), wherein a testing support (3) and a water collecting box (4) are fixedly installed at the top of the testing table (2), and a differential pressure workpiece is arranged on the testing support (3), characterized in that: There are two support frames (5) arranged inside the detection bracket (3). An adjustment component (6) is arranged between the two support frames (5) and the detection bracket (3). A positioning component (7) is arranged between the support frame (5) and the water collecting box (4).

2. The valve testing press with adjustable caliber according to claim 1, wherein: A groove is formed at the top end of the support frame (5), and the groove is in a "V" - shaped structure.

3. The valve testing press with adjustable caliber according to claim 1 is characterized in that: The adjustment component (6) includes two cylinders (602). Both of the two cylinders (602) are installed on the detection table (2). A moving plate (601) is arranged at the top end of the cylinder (602). Two lead screws (603) are rotatably installed between the two moving plates (601).

4. The valve testing press with adjustable caliber according to claim 3, characterized in that: Thread grooves (604) and through grooves (605) are respectively formed on both sides of the bottom end of the support frame (5) in a penetrating manner, and the positions of the thread grooves (604) and through grooves (605) of the two support frames (5) are opposite. The support frame (5) is thread - connected to one lead screw (603) through the thread groove (604) and is slidably connected to the other lead screw (603) through the through groove (605).

5. The valve testing press with adjustable caliber according to claim 1, characterized in that: The positioning component (7) includes two guide rails (701). The two guide rails (701) are fixedly installed inside the water collecting box (4). A moving rod (702) is slidably installed on the surface of the guide rail (701). One side of the moving rod (702) is slidably connected to the support frame (5). A gear (703) is rotatably installed at the inner top end of the moving rod (702). A driven rack (704) is slidably installed inside the moving rod (702). The gear (703) is meshed with the driven rack (704). Active racks (705) are fixedly installed on both sides of the support frame (5). The gear (703) is meshed with the active rack (705).

6. The valve testing press with adjustable caliber according to claim 5, wherein: A positioning rod (706) is detachably installed between the two driven racks (704). The positioning rod (706) and the groove of the support frame (5) form a rhombus structure, and the center of the rhombus is on the same axis as the center of the differential pressure workpiece.

7. The valve testing press with adjustable caliber according to claim 4, wherein: One end of the lead screw (603) is fixedly installed with a motor. The two lead screws (603) are symmetrically arranged along the mid - line of the support frame (5).

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