Flow testing device of plug valve

Abstract

The utility model discloses a flow testing device of a plug valve. The flow testing device comprises a supporting seat and a jacking connecting unit, an upper water tank is arranged at the upper end of the supporting seat, an electric ball valve is arranged at a water outlet hole in the lower surface of the upper water tank, a flange plate is arranged at the lower end of the electric ball valve, supporting columns which are uniformly distributed are arranged between the upper surface of the flange plate and the bottom surface of the upper water tank, a liquid level sensor is arranged at the upper end of the supporting seat, and the lower end of the liquid level sensor extends into the upper water tank; the jacking connecting unit is arranged on the bottom wall of the supporting base and located below the flange plate. The liquid level control device further comprises a PLC, the PLC is arranged on the front side face of the supporting base, and the input end of the liquid level sensor and the input end of the electric ball valve are electrically connected with the output end of the PLC. When the flow testing device of the plug valve is used, the plug valve can be quickly and conveniently connected with the testing device through electric lifting, and the convenience during flow testing of the plug valve is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plug valves, in particular to a flow testing device for plug valves. Background Art

[0002] A plug valve is a rotary valve in the shape of a closing piece or a plunger. It is a valve that is opened or closed by rotating 90 degrees to connect or separate the channel opening on the valve plug with the channel opening on the valve body. The shape of its valve plug can be cylindrical or conical. In a cylindrical valve plug, the channel is generally rectangular.

[0003] In the conical valve plug, the channel is trapezoidal. After the plug valve is processed, it needs to be tested for flow to ensure the product quality of the plug valve. During the test, the plug valve is often connected to the flow channel of the test device with bolts when necessary. The bolt connection has a low cost, but the disassembly process is cumbersome, which affects the convenience of the plug valve flow test. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a flow testing device for a plug valve. When in use, the plug valve can be quickly and conveniently connected to the testing device through electric lifting, which greatly improves the convenience of the plug valve flow testing and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flow test device for a plug valve, comprising a support seat and a tightening connection unit;

[0006] Support seat: an upper water tank is provided at its upper end, an electric ball valve is provided at the water outlet of the lower surface of the upper water tank, a flange plate is provided at the lower end of the electric ball valve, evenly distributed support columns are provided between the upper surface of the flange plate and the bottom surface of the upper water tank, a liquid level sensor is provided at the upper end of the support seat, and the lower end of the liquid level sensor extends to the interior of the upper water tank;

[0007] A top-tightening connection unit: arranged on the bottom wall of the support seat, and the top-tightening connection unit is located below the flange plate;

[0008] Among them: it also includes a PLC controller, which is arranged on the front side of the support seat, the input ends of the liquid level sensor and the electric ball valve are electrically connected to the output ends of the PLC controller, the output end of the liquid level sensor is electrically connected to the input end of the external computer, and the input end of the PLC controller is electrically connected to an external power supply. When in use, the plug valve can be quickly and conveniently connected to the test device through electric lifting, which greatly improves the convenience of plug valve flow testing.

[0009] Furthermore, the tightening connection unit includes a base frame, a round shaft, an X-shaped frame, an upper support frame and a plug valve seat, the base frame is arranged on the bottom wall of the support seat, the long sliding holes on the front and rear sides of the left end of the base frame are slidably connected with round shafts, the outer arc surfaces of the round shafts are rotatably connected to the lower left end of the X-shaped frame, the lower right of the X-shaped frame is rotatably connected to the right end of the base frame, the upper right of the X-shaped frame is rotatably connected to the right end of the upper support frame, the upper left of the X-shaped frame is slidably connected to the long sliding groove at the left end of the upper support frame, and a plug valve seat is provided on the upper surface of the upper support frame, and the plug valve seat is located below the flange plate to facilitate the control of the lifting of the plug valve.

[0010] Furthermore, the tightening connection unit also includes a connecting shaft and a screw rod. The connecting shaft is arranged between the two circular shafts. The middle part of the outer arc surface of the connecting shaft is threadedly connected to the screw rod through a screw nut. The left end of the screw rod is rotatably connected to the base frame through a bearing, which facilitates the control of the deformation of the X-frame.

[0011] Furthermore, the tightening connection unit also includes a servo motor, which is arranged at the left end of the base frame, and the output shaft of the servo motor is fixedly connected to the left end of the screw rod. The input end of the servo motor is electrically connected to the output end of the PLC controller to facilitate the rotation of the screw rod.

[0012] Furthermore, a groove is provided on the upper surface of the plug valve seat to facilitate the positioning of the plug valve.

[0013] Furthermore, a bellows is provided between the lower surface of the plug valve seat and the bottom wall through hole of the support seat to prevent water splashing.

[0014] Furthermore, a lower water tank is provided on the lower surface of the support seat, and a circulating pump is provided at the lower end of the left side surface of the lower water tank. The liquid suction end of the circulating pump extends to the interior of the lower water tank, and the water outlet end of the circulating pump is connected to the interior of the upper water tank through a water pipe. The input end of the circulating pump is electrically connected to the output end of the PLC controller to facilitate the circulation of water.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The PLC controller is controlled and the servo motor is running. The output shaft of the servo motor drives the screw to rotate, and the screw drives the round shaft to slide to the right along the long sliding hole at the left end of the base frame through the connecting shaft. The X-frame is composed of two connecting rods and a central shaft that are rotatably connected. The round shaft drives the lower left end of the X-frame to move, and then the X-frame is deformed, which lifts the upper support frame. The upper support frame drives the plug valve to move up through the plug valve seat and tighten it against the lower surface of the flange plate. Then the servo motor stops running, and the water flow inside the upper water tank passes through the electric ball valve and the flange plate into the interior of the plug valve. When in use, the plug valve can be quickly and conveniently connected to the test device through electric lifting, which greatly improves the convenience of plug valve flow testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic cross-sectional structure diagram of the top-tightening connection unit of the utility model.

[0019] In the figure: 1 support seat, 2 upper water tank, 3 electric ball valve, 4 flange plate, 5 support column, 6 top tightening connection unit, 61 base frame, 62 round shaft, 63 X-type frame, 64 upper support frame, 65 plug valve seat, 66 connecting shaft, 67 screw rod, 68 servo motor, 7 PLC controller, 8 liquid level sensor, 9 bellows, 10 lower water tank, 11 circulation pump, 12 groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-2 , This embodiment provides a technical solution: a flow test device for a plug valve, comprising a support seat 1 and a top-tightening connection unit 6;

[0022] Support seat 1: The upper end of the support seat 1 is provided with an upper water tank 2, and the support seat 1 provides an installation position for other components. An electric ball valve 3 is provided at the water outlet of the lower surface of the upper water tank 2, and a flange plate 4 is provided at the lower end of the electric ball valve 3. Evenly distributed support columns 5 are provided between the upper surface of the flange plate 4 and the bottom surface of the upper water tank 2. The support columns 5 provide support for the flange plate 4. A liquid level sensor 8 is provided at the upper end of the support seat 1, and the lower end of the liquid level sensor 8 extends to the interior of the upper water tank 2. The electric ball valve 3 is opened, the liquid level sensor 8 works, and the upper water tank 2, the water flow inside passes through the electric ball valve 3 and the flange plate 4 to enter the inside of the plug valve, the lower surface of the support seat 1 is provided with a lower water tank 10, and the lower end of the left side of the lower water tank 10 is provided with a circulating pump 11, the liquid pumping end of the circulating pump 11 extends to the inside of the lower water tank 10, the water outlet end of the circulating pump 11 is connected with the inside of the upper water tank 2 through a water pipe, the input end of the circulating pump 11 is electrically connected to the output end of the PLC controller 7, and the circulating pump 11 pumps the water inside the lower water tank 10 to the inside of the upper water tank 2, so as to facilitate the reuse of the water used for detection;

[0023] Tightening connection unit 6: arranged on the bottom wall of the support seat 1, the tightening connection unit 6 is located below the flange plate 4, and the tightening connection unit 6 includes a base frame 61, a round shaft 62, an X-shaped frame 63, an upper support frame 64 and a plug valve seat 65. The base frame 61 is arranged on the bottom wall of the support seat 1, and the long sliding holes on the front and rear sides of the left end of the base frame 61 are slidably connected with the round shaft 62 inside, and the outer arc surface of the round shaft 62 is rotatably connected to the lower left end of the X-shaped frame 63, and the lower right of the X-shaped frame 63 is rotatably connected to the right end of the base frame 61, and the upper right of the X-shaped frame 63 is rotatably connected to the right end of the upper support frame 64. The upper left part is slidably connected with the long slide groove at the left end of the upper support frame 64. The upper surface of the upper support frame 64 is provided with a plug valve seat 65, and the plug valve seat 65 is located below the flange plate 4. The X-shaped frame 63 is composed of two connecting rods and a central axis rotationally connected. The circular shaft 62 drives the lower left end of the X-shaped frame 63 to move, and then the X-shaped frame 63 is deformed, which will lift the upper support frame 64. At the same time, the lower left end of the X-shaped frame 63 rotates relative to the circular shaft 62, the lower right end of the X-shaped frame 63 rotates relative to the bottom frame 61, and the upper left end of the X-shaped frame 63 slides and rotates relative to the long slide groove of the upper support frame 64. The upper right end of the X-shaped frame 63 rotates relative to the upper support frame 64, and the upper support frame 64 drives the plug valve to move up through the plug valve seat 65 to press against the lower surface of the flange plate 4. The pressing connection unit 6 also includes a connecting shaft 66 and a screw rod 67. The connecting shaft 66 is arranged between the two round shafts 62. The middle part of the outer arc surface of the connecting shaft 66 is threadedly connected with the screw rod 67 through a screw nut. The left end of the screw rod 67 is rotatably connected to the bottom frame 61 through a bearing. The screw rod 67 drives the round shaft 62 to slide to the right along the long sliding hole at the left end of the bottom frame 61 through the connecting shaft 66. The pressing connection unit 6 also includes a servo motor 68. The servo motor The machine 68 is arranged at the left end of the base frame 61, the output shaft of the servo motor 68 is fixedly connected to the left end of the screw rod 67, the input end of the servo motor 68 is electrically connected to the output end of the PLC controller 7, the servo motor 68 is running, and the output shaft of the servo motor 68 drives the screw rod 67 to rotate, the upper surface of the plug valve seat 65 is provided with a groove 12, the plug valve is placed inside the groove 12 on the upper surface of the plug valve seat 65, a bellows 9 is arranged between the lower surface of the plug valve seat 65 and the bottom wall through hole of the support seat 1, and the water flows through the plug valve, the plug valve seat 65, the bellows 9 and the support seat 1 into the lower water tank 10;

[0024] Wherein: it also includes a PLC controller 7, the PLC controller 7 is arranged on the front side of the support seat 1, the liquid level sensor 8 and the input end of the electric ball valve 3 are electrically connected to the output end of the PLC controller 7, the output end of the liquid level sensor 8 is electrically connected to the input end of the external computer, the input end of the PLC controller 7 is electrically connected to the external power supply, the liquid level sensor 8 monitors the liquid level inside the upper water tank 2 in real time, and converts the monitoring result into an electrical signal to transmit to the external computer for processing, and the flow rate of the plug valve can be calculated by multiplying the stable value of the liquid level drop per second by the bottom area of ​​the upper water tank 2.

[0025] The working principle of the utility model is as follows:

[0026] During the test, the plug valve is placed inside the groove 12 on the upper surface of the plug valve seat 65, and then the PLC controller 7 is adjusted to operate the servo motor 68. The output shaft of the servo motor 68 drives the screw rod 67 to rotate, and the screw rod 67 drives the circular shaft 62 to slide to the right along the long sliding hole at the left end of the bottom frame 61 through the connecting shaft 66. The X-shaped frame 63 is composed of two connecting rods and a central axis rotationally connected. The circular shaft 62 drives the lower left end of the X-shaped frame 63 to move, and then the X-shaped frame 63 is deformed, and the upper support frame 64 is lifted. At the same time, the lower left end of the X-shaped frame 63 rotates relative to the circular shaft 62, the lower right end of the X-shaped frame 63 rotates relative to the bottom frame 61, the upper left end of the X-shaped frame 63 slides and rotates relative to the long sliding groove of the upper support frame 64, the upper right end of the X-shaped frame 63 rotates relative to the upper support frame 64, and the upper support frame 64 drives the plug valve to move up through the plug valve seat 65 and to align with the lower surface of the flange plate 4. The surface is pressed tightly, and then the servo motor 68 stops running, the electric ball valve 3 is opened, and the liquid level sensor 8 works. The water flow in the upper water tank 2 passes through the electric ball valve 3 and the flange plate 4 to enter the interior of the plug valve, and then the water flows through the plug valve, the plug valve seat 65, the bellows 9 and the support seat 1 into the interior of the lower water tank 10. At the same time, the liquid level sensor 8 monitors the liquid level inside the upper water tank 2 in real time, and converts the monitoring result into an electrical signal and transmits it to an external computer for processing. The flow rate of the plug valve can be calculated by multiplying the stable value of the liquid level drop per second by the bottom area of ​​the upper water tank 2. The through hole of the flow channel of the test device is much larger than the through hole of the plug valve. After the test is completed, the electric ball valve 3 is closed, and the output shaft of the servo motor 68 rotates in the opposite direction, driving the plug valve to move downward. Then the plug valve can be removed, and at the same time, the circulating pump 11 pumps the water inside the lower water tank 10 to the interior of the upper water tank 2, which is convenient for the reuse of water for detection.

[0027] It is worth noting that the electric ball valve 3, liquid level sensor 8, PLC controller 7 and servo motor 68 disclosed in the above embodiments can be freely configured according to the actual application scenario. The electric ball valve 3 can use an electric ball valve with model Q911, the liquid level sensor 8 can use a immersion liquid level meter with model QDY30A-VD, the PLC controller 7 can use a PLC controller with model FX3G-24MT / ES-A, and the servo motor 68 can use a servo motor with model HA-FF33C-S5. The PLC controller 7 controls the operation of the electric ball valve 3, the liquid level sensor 8 and the servo motor 68 using methods commonly used in the prior art.

[0028] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flow test device for a plug valve, characterized in that: It comprises a support seat (1) and a tightening connection unit (6); The upper end of the support seat (1) is provided with an upper water tank (2), the water outlet of the lower surface of the upper water tank (2) is provided with an electric ball valve (3), the lower end of the electric ball valve (3) is provided with a flange plate (4), and evenly distributed support columns (5) are provided between the upper surface of the flange plate (4) and the bottom surface of the upper water tank (2). The upper end of the support seat (1) is provided with a liquid level sensor (8), and the lower end of the liquid level sensor (8) extends to the interior of the upper water tank (2); The tightening connection unit (6) is arranged on the bottom wall of the support seat (1), and the tightening connection unit (6) is located below the flange plate (4); The invention further comprises a PLC controller (7), wherein the PLC controller (7) is arranged on the front side of the support seat (1), the input ends of the liquid level sensor (8) and the electric ball valve (3) are electrically connected to the output end of the PLC controller (7), the output end of the liquid level sensor (8) is electrically connected to the input end of an external computer, and the input end of the PLC controller (7) is electrically connected to an external power supply.

2. A flow rate testing device for a plug valve according to claim 1, characterized in that: The tightening connection unit (6) comprises a base frame (61), a round shaft (62), an X-shaped frame (63), an upper support frame (64) and a plug valve seat (65). The base frame (61) is arranged on the bottom wall of the support seat (1). The long sliding holes on the front and rear sides of the left end of the base frame (61) are slidably connected with the round shaft (62). The outer arc surface of the round shaft (62) is rotatably connected to the lower left end of the X-shaped frame (63). The lower right of the X-shaped frame (63) is rotatably connected to the right end of the base frame (61). The upper right of the X-shaped frame (63) is rotatably connected to the right end of the upper support frame (64). The upper left of the X-shaped frame (63) is slidably connected to the long sliding groove at the left end of the upper support frame (64). The upper surface of the upper support frame (64) is provided with a plug valve seat (65). The plug valve seat (65) is located below the flange plate (4).

3. A flow rate testing device for a plug valve according to claim 2, characterized in that: The tightening connection unit (6) further comprises a connecting shaft (66) and a screw rod (67); the connecting shaft (66) is arranged between the two circular shafts (62); the middle portion of the outer arc surface of the connecting shaft (66) is threadedly connected to the screw rod (67) via a screw nut; the left end of the screw rod (67) is rotatably connected to the base frame (61) via a bearing.

4. A flow rate testing device for a plug valve according to claim 3, characterized in that: The tightening connection unit (6) further comprises a servo motor (68), wherein the servo motor (68) is arranged at the left end of the base frame (61), the output shaft of the servo motor (68) is fixedly connected to the left end of the screw rod (67), and the input end of the servo motor (68) is electrically connected to the output end of the PLC controller (7).

5. A flow rate testing device for a plug valve according to claim 2, characterized in that: The upper surface of the plug valve seat (65) is provided with a groove (12).

6. A flow rate testing device for a plug valve according to claim 2, characterized in that: A bellows (9) is provided between the lower surface of the plug valve seat (65) and the bottom wall through hole of the support seat (1).

7. A flow rate testing device for a plug valve according to claim 1, characterized in that: A lower water tank (10) is provided on the lower surface of the support seat (1), and a circulation pump (11) is provided at the lower end of the left side surface of the lower water tank (10). The liquid extraction end of the circulation pump (11) extends into the interior of the lower water tank (10), and the water outlet end of the circulation pump (11) is connected to the interior of the upper water tank (2) through a water pipe. The input end of the circulation pump (11) is electrically connected to the output end of the PLC controller (7).

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