Valve assembly detection equipment

Abstract

The invention discloses valve assembly detection equipment, and relates to the technical field of valve detection. The device comprises a detection box, a box cover is fixed to the top of the detection box, a helium storage tank is fixed to the upper surface of the box cover, a gas conveying pipe is fixed to one side of the helium storage tank, and a sucking pump is fixed to one end of the gas conveying pipe; an air pressure detector is fixed on one side of the sucking pump through a connecting pipe; an air inlet pipe is fixed at one end of the air pressure detector; a support is fixed in the detection box, a first motor is fixed at one end of the support, and a threaded rod is fixed on an output shaft of the first motor; a first bearing is fixed to the bottom of the inner wall of the detection box, and a connecting rod is fixed to the inner ring of the first bearing. Through cooperative movement of the threaded rod and the driven rod, the placement shell drives the helium detector in the placement shell to reciprocate up and down in the detection box, if the surface of the detected valve body has cracks or is poor in airtightness, helium in the valve body overflows, the helium detector gives out a prompt, and a worker can judge that the valve body has flaws.

Description

Technical Field

[0001] The invention belongs to the technical field of valve detection, and in particular relates to valve assembly detection equipment. Background Art

[0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. A valve is a device that allows the medium in piping and equipment to flow or stop and can control its flow. There are three sealing parts of a valve: the contact between the opening and closing parts and the two sealing surfaces of the valve seat; the matching part between the packing, the valve stem, and the stuffing box; and the connection between the valve body and the valve cover. The leakage at the former is called internal leakage, which is usually called loose closure, which will affect the ability of the valve to cut off the medium; the leakage at the latter two is called external leakage, that is, the medium leaks from the inside of the valve to the outside of the valve. External leakage will cause material loss, pollute the environment, and in serious cases, cause accidents. For flammable, explosive, toxic or radioactive media, external leakage is even more unacceptable, so the valve must have reliable sealing performance.

[0003] Generally, valves are tested using a water pressure test, which is one of the most common sealing test methods and is applicable to most types of valves. The test involves closing the valve, applying a water pressure higher than the working pressure to one side of the valve, and then maintaining the pressure for a certain period of time before checking whether there is water leakage on the other side. However, water pressure testing also has certain problems. For example, water pressure testing uses water, and for some metal materials or valves with certain special coatings, prolonged contact with water may cause corrosion or rust. After the test, any residual moisture in the system needs to be completely removed, otherwise it may cause rust or corrosion to the internal parts of the valve. Removing moisture may require additional time and resources, which is time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to provide a valve assembly detection equipment. Through the coordinated movement of the threaded rod and the driven rod, the placement shell drives the helium detector inside it to reciprocate up and down in the detection box. If the surface of the valve body being detected has cracks or the air tightness is poor, the helium inside it will overflow, and the helium detector will issue a prompt. The staff can then determine that the valve body has defects. Compared with the traditional detection using water pressure, the helium does not need to dry the valve body again after the detection, and the corrosion of the valve body by the liquid is also reduced. While protecting the valve body, the air tightness of the valve can be detected more efficiently, which solves the existing problem that after the test, the residual moisture in the system needs to be completely removed, otherwise it may cause rust or corrosion of the internal parts of the valve, and the removal of moisture may require additional time and resources.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A valve assembly inspection equipment, comprising an inspection box, a box cover is fixed on the top of the inspection box, a helium storage tank is fixed on the upper surface of the box cover, a gas pipeline is fixed on one side of the helium storage tank, and a vacuum pump is fixed on one end of the gas pipeline;

[0007] An air pressure detector is fixed to one side of the air pump via a connecting pipe, and an air inlet pipe is fixed to one end of the air pressure detector;

[0008] A bracket is fixed inside the detection box, a first motor is fixed at one end of the bracket, and a threaded rod is fixed to the output shaft of the first motor;

[0009] A first bearing is fixed to the bottom of the inner wall of the detection box, a connecting rod is fixed to the inner ring of the first bearing, and one end of the connecting rod is fixedly connected to the threaded rod;

[0010] The outer ring of the threaded rod is threadedly connected with a threaded tube, the outer ring of the threaded tube is fixed with a second bearing, the outer ring of the second bearing is fixed with a connecting plate, and one side of the connecting plate is fixed with a first mounting plate;

[0011] The outer side of the first mounting plate is movably connected to the second mounting plate, and the surfaces of the first mounting plate and the second mounting plate are both provided with threaded holes;

[0012] A transmission plate is fixed to one side of the second mounting plate, a second motor is fixed to the upper surface of the transmission plate, an active rod is fixed to the output shaft of the second motor, and one end of the active rod is rotatably connected to the transmission rod;

[0013] A limit rod is fixed on the upper surface of the transmission plate, a limit hole is formed inside the limit rod, a driven rod is passed through the limit hole, and one end of the transmission rod away from the active rod is rotatably connected to the driven rod;

[0014] A placement shell is fixed to one end of the driven rod;

[0015] A fastener is fixed inside the detection box, and a valve body is clamped inside the fastener.

[0016] The present invention is further configured as follows: the placement shell includes a fixing plate, and a plurality of telescopic rods are fixed to one side of the fixing plate;

[0017] A tension spring is sleeved on the outer side of the telescopic rod, and an adjustment plate is fixed on one end of the telescopic rod.

[0018] The present invention is further configured as follows: one end of the tension spring is fixedly connected to the fixing plate, and the other end of the tension spring is fixedly connected to the adjusting plate;

[0019] The fixing plate is fixedly connected to the driven rod;

[0020] A placing plate is fixed at the bottom of the fixing plate, and the adjusting plate is slidably connected with the placing plate.

[0021] The present invention is further configured as follows: a support rod is fixed inside the detection box, and a positioning hole is opened on the surface of the connection plate;

[0022] The support rod passes through the positioning hole.

[0023] The present invention is further configured as follows: the fastener comprises a bottom plate, and a plurality of sealing grooves are formed on the surface of the bottom plate;

[0024] The bottom of the base plate is fixedly connected to the inner wall of the detection box;

[0025] A positioning rod is fixed on one side of the bottom plate, a sliding groove is provided on the surface of the positioning rod, and a sliding block is slidably connected inside the sliding groove.

[0026] The present invention is further configured as follows: a positioning plate is fixed to one side of the slider, and a placement groove is opened on one side of the positioning plate;

[0027] A hydraulic cylinder is fixed on one side of the bottom plate, a movable plate is fixed on one side of the positioning plate, and an output shaft of the hydraulic cylinder is fixedly connected to the movable plate.

[0028] The present invention is further configured as follows: a clamping plate is fixed on the outside of the air intake pipe, and a detection tube is fixed on the bottom of the clamping plate;

[0029] The detection tube is stuck into the interior of the valve body.

[0030] The present invention is further configured as follows: a limiting groove is provided on the upper surface of the card plate, and a sealing strip is fixed on the side of the card plate away from the limiting groove;

[0031] A limiting strip is fixed at the bottom of the positioning plate, and the limiting strip matches the limiting groove.

[0032] The present invention has the following beneficial effects:

[0033] 1. The present invention uses the coordinated movement of the threaded rod and the driven rod to drive the helium detector inside the housing to reciprocate up and down in the detection box. If the surface of the valve body being detected has cracks or poor air tightness, the helium inside it will overflow, and the helium detector will issue a prompt. The staff can then determine that the valve body has defects. Compared with the traditional detection using water pressure, the helium does not need to be dried again for the valve body after the detection, and the corrosion of the valve body by the liquid is also reduced. While protecting the valve body, the air tightness of the valve can be detected more efficiently. The helium detector is constantly active in the detection box, so the overflowed helium can be captured more quickly, thereby improving the detection efficiency of the device.

[0034] 2. The present invention uses the function of the card plate. After the card plate is fixed in the limiting groove, when the positioning plate moves downward and squeezes the card plate, the card plate will remain stable and will not deviate or slip due to excessive pressure. This ensures the stability of the valve body when inflating the valve body and avoids helium leakage during the inflation process.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0037] Figure 1 The present invention is a schematic structural diagram of a valve assembly detection equipment.

[0038] Figure 2 For the present invention Figure 1 A partial enlarged view of point A in the middle.

[0039] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0040] Figure 4 It is a schematic diagram of the box cover structure of the present invention.

[0041] Figure 5 It is a schematic diagram of the bottom structure of the box cover of the present invention.

[0042] Figure 6 It is a schematic diagram of the positioning plate structure of the present invention.

[0043] Figure 7 It is a schematic diagram of the transmission plate structure of the present invention.

[0044] Figure 8 It is a schematic diagram of the connecting plate structure of the present invention.

[0045] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0046] 1-test box, 2-box cover, 3-helium storage tank, 4-gas pipe, 5-air pump, 6-air pressure detector, 7-intake pipe, 8-bracket, 9-first motor, 10-threaded rod, 11-first bearing, 12-connecting rod, 13-threaded tube, 14-second bearing, 15-connecting plate, 16-first mounting plate, 17-second mounting plate, 18-threaded hole, 19-transmission plate, 20-second motor, 21-active rod, 22-transmission rod, 23-limiting rod, 24-limiting hole, 25-driven Rod, 26-placing shell, 27-fastener, 271-bottom plate, 272-sealing groove, 273-positioning rod, 274-slide groove, 275-slider, 276-positioning plate, 277-placing groove, 278-hydraulic cylinder, 279-movable plate, 28-valve body, 29-fixed plate, 30-telescopic rod, 31-tension spring, 32-adjusting plate, 33-placing plate, 34-support rod, 35-positioning hole, 36-card plate, 37-detection tube, 38-limiting groove, 39-sealing strip, 40-limiting strip. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0049] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention. Specific embodiment 1

[0051] See also Figure 1-8The present invention is a valve assembly detection equipment, including a detection box 1, a box cover 2 is fixed on the top of the detection box 1, a helium storage tank 3 is fixed on the upper surface of the box cover 2, a gas delivery pipe 4 is fixed on one side of the helium storage tank 3, and a vacuum pump 5 is fixed on one end of the gas delivery pipe 4; a pressure detector 6 is fixed on one side of the vacuum pump 5 through a connecting pipe, and an air intake pipe 7 is fixed on one end of the pressure detector 6; a bracket 8 is fixed inside the detection box 1, a first motor 9 is fixed on one end of the bracket 8, and a threaded rod 10 is fixed on the output shaft of the first motor 9; a first bearing 11 is fixed on the bottom of the inner wall of the detection box 1, a connecting rod 12 is fixed on the inner ring of the first bearing 11, and one end of the connecting rod 12 is fixedly connected to the threaded rod 10; a threaded tube 13 is threadedly connected to the outer ring of the threaded tube 13, a second bearing 14 is fixed on the outer ring of the threaded tube 13, and a connecting rod 12 is fixed on the outer ring of the second bearing 14 A connecting plate 15 is provided, and a first mounting plate 16 is fixed on one side of the connecting plate 15; a second mounting plate 17 is movably connected to the outer side of the first mounting plate 16, and threaded holes 18 are provided on the surfaces of the first mounting plate 16 and the second mounting plate 17; a transmission plate 19 is fixed on one side of the second mounting plate 17, and a second motor 20 is fixed on the upper surface of the transmission plate 19, and an active rod 21 is fixed on the output shaft of the second motor 20, and a transmission rod 22 is rotatably connected to one end of the active rod 21; a limiting rod 23 is fixed on the upper surface of the transmission plate 19, and a limiting hole 24 is provided inside the limiting rod 23, and a driven rod 25 is penetrated inside the limiting hole 24, and the end of the transmission rod 22 away from the active rod 21 is rotatably connected to the driven rod 25; a placement shell 26 is fixed on one end of the driven rod 25; a fastener 27 is fixed inside the detection box 1, and a valve body 28 is clamped inside the fastener 27.

[0052] Specifically, the placement shell 26 includes a fixing plate 29 , and a plurality of telescopic rods 30 are fixed to one side of the fixing plate 29 ; a tension spring 31 is sleeved on the outer side of the telescopic rod 30 , and an adjustment plate 32 is fixed to one end of the telescopic rod 30 .

[0053] Furthermore, one end of the tension spring 31 is fixedly connected to the fixed plate 29, and the other end of the tension spring 31 is fixedly connected to the adjustment plate 32; the fixed plate 29 is fixedly connected to the driven rod 25; a placement plate 33 is fixed to the bottom of the fixed plate 29, and the adjustment plate 32 is slidably connected to the placement plate 33.

[0054] The operation process of this embodiment is as follows: when the device is used, the valve body 28 is placed in the fastener 27, that is, one opening is placed flat on the positioning plate 276, so that the sealing groove 272 on the positioning plate 276 seals one end of the valve body 28, and then the detection tube 37 is inserted into the other opening of the valve body 28, and the clamping plate 36 is covered on the surface of the valve body 28, and then the hydraulic cylinder 278 is opened, and the output shaft of the hydraulic cylinder 278 moves downward to squeeze the clamping plate 36 at the bottom, so that the clamping plate 36 is more tightly covered on the valve body 28. The other end of the valve body 28 is opened, and the vacuum pump 5 is turned on. The vacuum pump 5 injects the helium in the helium storage tank 3 into the valve body 28 through the gas pipe 4 and the detection tube 37, and the first motor 9 and the second motor 20 are turned on, and then the box cover 2 is closed to keep the inside of the detection box 1 in a sealed state. A helium detector is placed in the placement shell 26. The output shaft of the first motor 9 drives the threaded rod 10 at one end thereof to rotate. When the threaded rod 10 rotates, the threaded tube 13 on its outer side moves accordingly, and the threaded tube 13 moves upward or downward on the threaded rod 10. When the valve body 28 is moved, the connecting plate 15 on the outside thereof is driven to move, and the connecting plate 15 drives the transmission plate 19 on one side thereof to move. At the same time, the output shaft of the second motor 20 on the surface of the transmission plate 19 drives the active rod 21 to rotate. The active rod 21 drives the driven rod 25 to move through the transmission of the transmission rod 22, and the placement shell 26 at one end of the driven rod 25 moves back and forth accordingly. Through the coordinated movement of the threaded rod 10 and the driven rod 25, the placement shell 26 drives the helium detector inside it to reciprocate up and down in the detection box 1. If the surface of the valve body 28 to be detected has cracks or poor air tightness, the helium inside it overflows, and the helium detector issues a prompt, and the staff can judge that the valve body 28 has defects. Compared with the traditional detection using water pressure, the helium does not need to dry the valve body again after the detection, and the corrosion of the valve body by the liquid is reduced. While protecting the valve body, the air tightness of the valve can be detected more efficiently, and the helium detector is continuously active in the detection box 1, which can capture the overflowed helium more quickly, thereby improving the detection efficiency of the device. Specific embodiment 2

[0056] See also Figure 4-6On the basis of the first specific embodiment, a support rod 34 is fixed inside the detection box 1, and a positioning hole 35 is opened on the surface of the connecting plate 15; the support rod 34 passes through the positioning hole 35; the fastener 27 includes a bottom plate 271, and a plurality of sealing grooves 272 are opened on the surface of the bottom plate 271; the bottom of the bottom plate 271 is fixedly connected to the inner wall of the detection box 1; a positioning rod 273 is fixed on one side of the bottom plate 271, and a slide groove 274 is opened on the surface of the positioning rod 273, and a slider 275 is slidably connected inside the slide groove 274; a positioning plate 276 is fixed on one side of the slider 275, and a placement groove 277 is opened on one side of the positioning plate 276; a hydraulic cylinder 278 is fixed on one side of the bottom plate 271, and a movable plate 279 is fixed on one side of the positioning plate 276, and the output shaft of the hydraulic cylinder 278 is fixedly connected to the movable plate 279.

[0057] Specifically, a clamping plate 36 is fixed to the outside of the air inlet pipe 7 , and a detection tube 37 is fixed to the bottom of the clamping plate 36 ; the detection tube 37 is clamped into the interior of the valve body 28 .

[0058] Furthermore, a limiting groove 38 is formed on the upper surface of the card plate 36 , and a sealing strip 39 is fixed to the side of the card plate 36 away from the limiting groove 38 ; a limiting strip 40 is fixed to the bottom of the positioning plate 276 , and the limiting strip 40 matches the limiting groove 38 .

[0059] The operation process of this embodiment is as follows: when the positioning plate 276 moves downward under the drive of the output shaft of the hydraulic cylinder 278, the limiting strip 40 at its bottom is inserted into the limiting groove 38 on the upper surface of the card plate 36. After the card plate 36 is fixed inside the limiting groove 38, when the positioning plate 276 moves downward again and squeezes the card plate 36, the card plate 36 will remain stable and will not deviate or slip due to excessive pressure, thereby ensuring the stability of the valve body 28 when inflating the valve body 28 and avoiding helium leakage during the inflation process.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A valve assembly inspection equipment, comprising an inspection box (1), characterized in that: A box cover (2) is fixed on the top of the detection box (1), a helium storage tank (3) is fixed on the upper surface of the box cover (2), a gas delivery pipe (4) is fixed on one side of the helium storage tank (3), and a vacuum pump (5) is fixed on one end of the gas delivery pipe (4); An air pressure detector (6) is fixed to one side of the air pump (5) via a connecting pipe, and an air inlet pipe (7) is fixed to one end of the air pressure detector (6); A bracket (8) is fixed inside the detection box (1), a first motor (9) is fixed to one end of the bracket (8), and a threaded rod (10) is fixed to the output shaft of the first motor (9); A first bearing (11) is fixed to the bottom of the inner wall of the detection box (1), a connecting rod (12) is fixed to the inner ring of the first bearing (11), and one end of the connecting rod (12) is fixedly connected to the threaded rod (10); The outer ring of the threaded rod (10) is threadedly connected to a threaded tube (13), the outer ring of the threaded tube (13) is fixed with a second bearing (14), the outer ring of the second bearing (14) is fixed with a connecting plate (15), and one side of the connecting plate (15) is fixed with a first mounting plate (16); The first mounting plate (16) is movably connected to a second mounting plate (17) on its outer side, and threaded holes (18) are formed on the surfaces of both the first mounting plate (16) and the second mounting plate (17); A transmission plate (19) is fixed to one side of the second mounting plate (17), a second motor (20) is fixed to the upper surface of the transmission plate (19), an active rod (21) is fixed to the output shaft of the second motor (20), and one end of the active rod (21) is rotatably connected to a transmission rod (22); A limiting rod (23) is fixed on the upper surface of the transmission plate (19), a limiting hole (24) is formed inside the limiting rod (23), a driven rod (25) penetrates inside the limiting hole (24), and one end of the transmission rod (22) away from the active rod (21) is rotatably connected to the driven rod (25); A placement shell (26) is fixed to one end of the driven rod (25); A fastener (27) is fixed inside the detection box (1), and a valve body (28) is clamped inside the fastener (27).

2. A valve assembly detection equipment according to claim 1, characterized in that: The placement shell (26) comprises a fixing plate (29), and a plurality of telescopic rods (30) are fixed to one side of the fixing plate (29); A tension spring (31) is sleeved on the outside of the telescopic rod (30), and an adjustment plate (32) is fixed to one end of the telescopic rod (30).

3. A valve assembly detection equipment according to claim 2, characterized in that: One end of the tension spring (31) is fixedly connected to the fixed plate (29), and the other end of the tension spring (31) is fixedly connected to the adjustment plate (32); The fixed plate (29) is fixedly connected to the driven rod (25); A placement plate (33) is fixed to the bottom of the fixed plate (29), and the adjustment plate (32) is slidably connected to the placement plate (33).

4. A valve assembly detection equipment according to claim 1, characterized in that: A support rod (34) is fixed inside the detection box (1), and a positioning hole (35) is opened on the surface of the connecting plate (15); The support rod (34) passes through the positioning hole (35).

5. The valve assembly detection equipment according to claim 1, characterized in that: The fastener (27) comprises a bottom plate (271), and a plurality of sealing grooves (272) are formed on the surface of the bottom plate (271); The bottom of the bottom plate (271) is fixedly connected to the inner wall of the detection box (1); A positioning rod (273) is fixed to one side of the bottom plate (271), a sliding groove (274) is provided on the surface of the positioning rod (273), and a sliding block (275) is slidably connected inside the sliding groove (274).

6. A valve assembly detection equipment according to claim 5, characterized in that: A positioning plate (276) is fixed on one side of the slider (275), and a placement groove (277) is opened on one side of the positioning plate (276); A hydraulic cylinder (278) is fixed to one side of the bottom plate (271), a movable plate (279) is fixed to one side of the positioning plate (276), and an output shaft of the hydraulic cylinder (278) is fixedly connected to the movable plate (279).

7. A valve assembly detection equipment according to claim 6, characterized in that: A clamping plate (36) is fixed on the outside of the air inlet pipe (7), and a detection tube (37) is fixed on the bottom of the clamping plate (36); The detection tube (37) is inserted into the interior of the valve body (28).

8. The valve assembly detection equipment according to claim 7, characterized in that: A limiting groove (38) is formed on the upper surface of the clamping plate (36), and a sealing strip (39) is fixed on the side of the clamping plate (36) away from the limiting groove (38); A limiting strip (40) is fixed to the bottom of the positioning plate (276), and the limiting strip (40) matches the limiting groove (38).

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