Valve detection system and method

Abstract

The invention relates to valve detection equipment, in particular to a valve detection system and method. The valve detection system comprises a fixed seat and two rotating stands which are symmetrically installed on the fixed seat and can rotate, each rotating stand is provided with two clamping jaws, flanges are integrally formed at the two ends of a valve body, the two flanges are clamped in the two clamping jaws located on the same side respectively, bolts are inserted into the four clamping jaws, and the two clamping jaws are connected through bolts. And each bolt is inserted into the corresponding screw hole in the flange. The method comprises the following steps that a, flanges are inserted into the two corresponding clamping jaws; b, bolts are inserted into corresponding screw holes in the flanges; c, the two sides of the valve body are plugged through the two plugs; d, pigment is injected into the valve cavity through a water pipe; e, torsion force opposite in direction is applied to the valve body from the two sides; and f, reverse drawing force is applied to the two sides of the valve body. The device has the beneficial effects that the applied external force can be accurately transmitted to the valve body 107, and the stability and the accuracy of the detection process are ensured.

Description

Technical Field

[0001] This invention relates to valve testing equipment, and more specifically to a valve testing system and method. Background Technology

[0002] Valves are devices used in fluid systems to control the direction, pressure, and flow rate of fluids, and to allow or stop the flow of media within pipelines and equipment. Valves used for fluid control range from the simplest shut-off valves to the various valves used in highly complex automated control systems, and come in a wide variety of types and specifications. Valves can be used to control water, steam, oil, gas, slurry, various corrosive media, liquid metals, and radioactive fluids.

[0003] The valve testing device, with application number 202021583804.6, uses a drive assembly to close the valve by driving a first mounting plate. The drive assembly has a large torque, preventing the valve from popping out of the testing device during the testing process. The drive assembly also facilitates valve installation and disassembly, improving testing efficiency. However, this device cannot accurately transmit the applied external force to the valve body, affecting the stability and accuracy of the testing process. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a valve detection system and method, which has the beneficial effect of enabling the applied external force to be accurately transmitted to the valve body 107, thus ensuring the stability and accuracy of the detection process.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A valve testing system includes a fixed base and two rotatable rotating frames symmetrically mounted on the fixed base. Each rotating frame is equipped with two grippers. Flanges are integrally formed at both ends of the valve body. The two flanges are respectively clamped in the two grippers located on the same side. Bolts are inserted into the four grippers, and each bolt is inserted into the corresponding screw hole on the flange.

[0007] Both of the aforementioned rotating frames are equipped with sliding seats, and the lower ends of the four grippers are slidably connected to the two ends of the two sliding seats respectively. Both sliding seats are rotatably connected with bidirectional screws, and the four grippers are threadedly connected to the two ends of the two bidirectional screws respectively.

[0008] The two slide seats are slidably connected to the two rotating frames respectively, and electric push rods are fixed between the two slide seats and the two rotating frames respectively.

[0009] Both ends of the fixed base are equipped with plugs, and a water pipe with a valve is fixedly connected to each plug.

[0010] A method for testing valves using a valve testing system, the method comprising the following steps:

[0011] a: Place the valve body between the four jaws, so that the flanges on both sides are located between the corresponding two jaws. Rotate the two double-acting screws to drive the corresponding two jaws to move closer to each other, so that the flanges are inserted into the corresponding two jaws.

[0012] b: Insert the bolts on the four clamps into the corresponding screw holes on the flange;

[0013] c: By pulling the two inserts, the two plugs are inserted into the two sides of the valve cavity on the valve body, and the two plugs seal the two sides of the valve body;

[0014] d: Prepare a pigment that is significantly different in color from the valve body, and inject the pigment into the valve cavity through a water pipe;

[0015] e: Control the two geared motors to start in opposite directions, drive the two rotating frames to rotate in opposite directions, and then apply a torsional force to the valve body from both sides in opposite directions. Observe whether there is pigment flowing out of the valve body.

[0016] f: Control the two electric push rods to start and drive the two slide seats to slide away from each other, thereby applying a reverse tensile force to both sides of the valve body, and observe whether there is pigment flowing out of the valve body. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 A schematic diagram of the overall structure of a valve detection system. Figure 1 ;

[0019] Figure 2 A schematic diagram of the overall structure of a valve detection system. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the fixed base;

[0021] Figure 4 This is a schematic diagram of the plug's structure;

[0022] Figure 5 A schematic diagram of a structure in which two plugs seal both sides of the valve body;

[0023] Figure 6 This is a schematic diagram of the rotating frame structure;

[0024] Figure 7 This is a schematic diagram of the slide block structure;

[0025] Figure 8 This is a schematic diagram of the gripper structure;

[0026] Figure 9 This is a schematic diagram of the bolt structure;

[0027] Figure 10 This is a schematic diagram of a structure in which two grippers are connected to a flange by bolts. Detailed Implementation

[0028] like Figures 1 to 2 And as shown in 7 to 10:

[0029] A valve testing system includes a fixed base 101 and two rotatable rotating frames 201 symmetrically mounted on the fixed base 101. Each of the two rotating frames 201 is equipped with two grippers 205. Both ends of the valve body 107 are integrally formed with flanges 108. The two flanges 108 are respectively clamped in the two grippers 205 located on the same side. Each of the four grippers 205 is equipped with a bolt 206, and each bolt 206 is inserted into a corresponding screw hole on the flange 108.

[0030] The valve body 107 is placed between four jaws 205, with the flanges 108 on both sides positioned between corresponding two jaws 205. The two jaws 205 on the same side are controlled to move closer to each other, so that the flanges 108 are inserted into the corresponding two jaws 205. The bolts 206 on the four jaws 205 are inserted into the corresponding screw holes on the flanges 108. This achieves stable clamping of the valve body 107. The jaws 205 are fixed to the flanges 108 on the valve body 107 by the bolts 206. In this way, during the external force testing process, whether the valve body 107 is subjected to compressive force, tensile force, or torsional force in the opposite direction, the applied external force will be accurately transmitted to the valve body 107, and the valve body 107 will not detach from the four jaws 205, thus ensuring the stability and accuracy of the testing process.

[0031] like Figures 8 to 9 As shown:

[0032] Each of the two rotating frames 201 is equipped with a sliding seat 203. The lower ends of the four grippers 205 are slidably connected to the two ends of the two sliding seats 203 respectively. Each of the two sliding seats 203 is rotatably connected with a bidirectional screw 204. The four grippers 205 are threadedly connected to the two ends of the two bidirectional screws 204 respectively.

[0033] Rotating the two bidirectional screws 204 causes the corresponding two clamps 205 to move closer to each other, so that the flange 108 is inserted into the slots on the corresponding two clamps 205. The slots limit the flange 108 axially. The bolts 206 connect and fix the flange 108 and the clamps 205 to prevent them from separating.

[0034] like Figures 6 to 7 As shown:

[0035] The two slide seats 203 are slidably connected to the two rotating frames 201 respectively, and electric push rods are fixed between the two slide seats 203 and the two rotating frames 201 respectively.

[0036] Two electric push rods are activated, causing the two sliding seats 203 to slide away from each other, thereby applying a reverse tensile force to both sides of the valve body 107. It is observed whether there is pigment flowing out of the valve body 107, thus testing the tensile strength of the valve body 107. Two electric push rods are activated, causing the two sliding seats 203 to slide towards each other, thereby applying opposing compressive forces to both sides of the valve body 107. It is observed whether there is pigment flowing out of the valve body 107, thus testing the compressive strength and airtightness of the valve body 107.

[0037] Secondly, the distance between the two slide seats 203 is adjustable, which can also be used for strength testing of valve bodies 107 of different lengths.

[0038] like Figures 3 to 5 As shown:

[0039] Both ends of the fixed base 101 are equipped with plugs 105, and a water pipe 106 with a valve is fixedly connected to each of the two plugs 105.

[0040] Two plugs 105 are inserted into both sides of the valve cavity on the valve body 107, respectively. The two plugs 105 seal both sides of the valve body 107, which makes it easier to inject pigment with a large color difference from the valve body into the valve cavity through the water pipe 106, and to facilitate the observation of valve leakage during the testing process.

[0041] Further:

[0042] The plug 105 is conical in shape; it can better seal both sides of the valve body 107 and is suitable for valve cavities of different diameters.

[0043] like Figures 4 to 5 As shown:

[0044] Each of the two plugs 105 is fixedly connected to a bracket 104, and the two brackets 104 are slidably connected to both ends of the fixed base 101.

[0045] Both of the inserts 104 are fitted with compression springs 109. The inner end of the compression spring 109 is fixedly connected to the plug 105, and the outer end of the compression spring 109 is fixedly connected to the fixing seat 101.

[0046] The compression spring 109 provides an inward thrust to the plug 105, ensuring that the two plugs 105 remain in contact with both sides of the valve cavity of the valve body 107. During the testing process, when the axial length of the valve body 107 changes, the compression springs 109 on both sides can compensate for the distance the valve body 107 moves axially, thus ensuring that the two plugs 105 always seal the sides of the valve cavity and prevent pigment from leaking from both sides of the valve body 107.

[0047] like Figure 3 and 6 As shown:

[0048] Both ends of the fixed base 101 are fixedly connected to a reduction motor 102, and the two rotating frames 201 are respectively fixedly connected to the output shafts of the two reduction motors 102.

[0049] Control the two geared motors 102 to start in opposite directions, drive the two rotating frames 201 to rotate in opposite directions, and then apply a torsional force to the valve body 107 from both sides in opposite directions. Observe whether there is pigment flowing out of the valve body 107 and test the torsional resistance of the valve body 107.

[0050] like Figure 3 and 6 As shown:

[0051] Two arc-shaped slot frames 103 are fixedly connected to the middle of the fixed base 101, and support rods 202 are fixedly connected to the inner ends of the two rotating frames 201 respectively. The two support rods 202 are slidably connected in the two arc-shaped slot frames 103 respectively.

[0052] The support rod 202 slides within the arc-shaped slot frame 103, providing auxiliary support to the inner end of the reciprocating rotating frame 201.

[0053] A method for testing valves using a valve testing system, the method comprising the following steps:

[0054] a: Place the valve body 107 between the four jaws 205, so that the flanges 108 on both sides are respectively located between the corresponding two jaws 205. Rotate the two bidirectional screws 204 to drive the corresponding two jaws 205 to move closer to each other, so that the flanges 108 are inserted into the corresponding two jaws 205.

[0055] b: Insert the bolts 206 on the four jaws 205 into the corresponding screw holes on the flange 108;

[0056] c: By pulling the two inserts 104, the two plugs 105 are inserted into the valve chambers on both sides of the valve body 107 respectively, and the two plugs 105 seal the two sides of the valve body 107.

[0057] d: Prepare a pigment that is significantly different in color from the valve body, and inject the pigment into the valve cavity through water pipe 106;

[0058] e: Control the two geared motors 102 to start in opposite directions, drive the two rotating frames 201 to rotate in opposite directions, and then apply a torsional force to the valve body 107 from both sides in opposite directions, and observe whether there is pigment flowing out of the valve body 107.

[0059] f: Control the two electric push rods to start and drive the two slide seats 203 to slide away from each other, thereby applying a reverse tensile force to both sides of the valve body 107, and observe whether there is pigment flowing out of the valve body 107.

Claims

1. A valve testing system, characterized by, It includes a fixed base (101) and two rotatable rotating brackets (201) symmetrically mounted on the fixed base (101). Each of the two rotating brackets (201) is equipped with two grippers (205). Both ends of the valve body (107) are integrally formed with flanges (108). The two flanges (108) are respectively clamped in the two grippers (205) located on the same side. Each of the four grippers (205) is equipped with a bolt (206), and each bolt (206) is inserted into the corresponding screw hole on the flange (108).

2. The valve testing system of claim 1, wherein, Each of the two rotating frames (201) is equipped with a slide seat (203), and the lower ends of the four grippers (205) are slidably connected to the two ends of the two slide seats (203). Each of the two slide seats (203) is rotatably connected with a bidirectional screw (204), and the four grippers (205) are threadedly connected to the two ends of the two bidirectional screws (204).

3. The valve testing system of claim 2, wherein, The two slide seats (203) are slidably connected to the two rotating frames (201), and electric push rods are fixed between the two slide seats (203) and the two rotating frames (201).

4. The valve testing system of claim 3, wherein, Both ends of the fixed base (101) are equipped with plugs (105), and a water pipe (106) with a valve is fixedly connected to each of the two plugs (105).

5. The valve testing system of claim 4, wherein, The plug (105) is conical in shape.

6. The valve testing system of claim 5, wherein, Each of the two plugs (105) is fixedly connected to a bracket (104), and the two brackets (104) are slidably connected to both ends of the fixed base (101).

7. The valve detection system according to claim 6, characterized in that, Both of the inserts (104) are fitted with compression springs (109), the inner end of the compression springs (109) is fixed to the plug (105), and the outer end of the compression springs (109) is fixed to the fixing seat (101).

8. The valve detection system according to claim 7, characterized in that, Both ends of the fixed base (101) are fixedly connected to a geared motor (102), and the two rotating frames (201) are respectively fixedly connected to the output shafts of the two geared motors (102).

9. The valve testing system of claim 8, wherein, Two arc-shaped slots (103) are fixedly connected to the middle of the fixed base (101), and support rods (202) are fixedly connected to the inner ends of the two rotating frames (201). The two support rods (202) are slidably connected in the two arc-shaped slots (103).

10. The method of claim 1 to 9, wherein, This method Includes the following steps: a: Place the valve body (107) between the four jaws (205), so that the flanges (108) on both sides are respectively located between the corresponding two jaws (205). Rotate the two double-acting screws (204) to drive the corresponding two jaws (205) to move closer to each other, so that the flanges (108) are inserted into the corresponding two jaws (205). b: Insert the bolts (206) on the four jaws (205) into the corresponding screw holes on the flange (108); c: By pulling the two inserts (104), the two plugs (105) are inserted into the two sides of the valve cavity on the valve body (107) respectively, and the two plugs (105) seal the two sides of the valve body (107); d: Prepare a pigment with a color that is significantly different from that of the valve body, and inject the pigment into the valve cavity through the water pipe (106); e: Control the two geared motors (102) to start in reverse, drive the two rotating frames (201) to rotate in opposite directions, and then apply a torsional force to the valve body (107) from both sides in opposite directions, and observe whether there is pigment flowing out of the valve body (107); f: Control the two electric push rods to start and drive the two sliding seats (203) to slide away from each other, thereby applying a reverse tensile force to both sides of the valve body (107) and observing whether there is pigment flowing out on the valve body (107).

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