Valve sealing performance detection device

Abstract

The utility model belongs to the technical field of valve detection, and discloses a valve tightness detection device, which comprises a moving trolley, a clamping mechanism, a storage tank, an adjusting assembly and a pressure gauge, the clamping mechanism is arranged on the moving trolley and used for fixing a detected valve, the storage tank is arranged on the moving trolley and used for fixing the detected valve, and the adjusting assembly is used for adjusting the pressure gauge. The movable trolley can freely move in a workshop, so that the detection device can move to the side of a detected valve without long-distance carrying, the input end of the adjusting valve is communicated with the storage tank, the output end of the adjusting valve is communicated with the input end of the isolating valve, and the output end of the isolating valve is communicated with the detected valve. The measuring port of the pressure gauge is communicated between the isolating valve and the tested valve, the pressure gauge is used for measuring the pressure drop of the tested valve, before the valve is installed to the process pipeline, the valve tightness detection device is used for testing the leakage rate of the tested valve in an off-line state, the tested valve is installed after meeting the requirement, rework is reduced, and the work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve detection technical field especially relates to valve sealing property detection device. BACKGROUND

[0002] Valve leakage rate is the fluid amount of valve leakage in unit time under certain conditions, and is an important index for measuring valve sealing performance, which directly affects the safety and efficiency of process piping system.

[0003] At present, valve leakage rate test adopts online detection method for detection, that is, valve is installed to process piping system and then executes leakage rate test. If valve leakage rate is unqualified through test bench detection, valve needs to be removed and disassembled, installed to process piping system after maintenance, and leakage rate test of valve is executed again, this method cannot guarantee that leakage rate test of valve after installation is qualified once, and there is possibility of rework. Moreover, if the measured valve is far away from the test bench, manpower or auxiliary equipment is needed for carrying, and operation is troublesome.

[0004] Therefore, valve sealing property detection device is urgently needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a valve sealing property detection device, can freely move in workshop, does not need long-distance carrying valve, saves manpower and material resources, and in offline state, leakage rate test is carried out to the measured valve, guarantees that the measured valve meets the requirement after installation, ensures that leakage rate test of the measured valve after installation to process piping system is qualified once, and reduces rework.

[0006] In order to solve the above problems existing in prior art, the utility model adopts the following technical scheme:

[0007] Valve sealing property detection device, comprising:

[0008] Movable trolley;

[0009] Clamping mechanism is arranged on the movable trolley, and the clamping mechanism is used for fixing the measured valve;

[0010] Storage tank is arranged on the movable trolley;

[0011] Adjusting assembly, including regulating valve and isolation valve, the input of regulating valve is communicated with the storage tank, the output of regulating valve is communicated with the input of isolation valve, and the output of isolation valve is communicated with the measured valve;

[0012] Pressure gauge, the pressure gauge has measuring port, the measuring port is communicated between the isolation valve and the measured valve, and the pressure gauge is used for measuring the pressure of the measured valve.

[0013] Preferably, the clamping mechanism comprises a fixed seat and a plurality of clamping pieces, the plurality of clamping pieces are movably arranged on the fixed seat and can clamp the outer periphery of the measured valve.

[0014] Preferably, the fixed seat is provided with a plurality of sliding grooves, the plurality of sliding grooves are radially and spaced apart along the outer periphery of the fixed seat, and the plurality of clamping pieces are correspondingly and slidably arranged in the sliding grooves.

[0015] Preferably, the clamping piece comprises a sliding part, a clamping part and a limiting part, the sliding part is slidably arranged in the sliding groove and can approach or move away from the flange side of the measured valve, the clamping part and the limiting part are respectively connected to the two ends of the sliding part, the limiting part is slidably attached to the bottom of the fixed seat, and the clamping part can be in contact with the flange end face of the measured valve.

[0016] Preferably, the clamping mechanism further comprises a locking piece, the locking piece is rotatably connected to the sliding part, and the locking piece can approach the clamping part so that the clamping part can be pressed against the flange end face of the measured valve.

[0017] Preferably, the moving trolley comprises a base and a plurality of wheels, the plurality of wheels are distributed in a matrix and rotatably arranged at the bottom of the base.

[0018] Preferably, the moving trolley further comprises a handrail, the handrail comprises a horizontal rod and two spaced-apart vertical rods, the horizontal rod is connected between the two vertical rods, and the vertical rods are fixedly connected to the base.

[0019] Preferably, the handrail further comprises a support rod, the support rod is located below the horizontal rod, and the two ends of the support rod are respectively fixedly connected to the two vertical rods.

[0020] Preferably, the valve sealing property detection device further comprises a clamp, the clamp is arranged on the support rod, and the clamp is sleeved on the outer periphery of the storage tank.

[0021] Preferably, the clamp comprises a sleeving part and a fixed part connected to the sleeving part, the fixed part is fixedly connected to the support rod, and the sleeving part is sleeved on the outer periphery of the storage tank.

[0022] The beneficial effects of the utility model are as follows:

[0023] The valve sealing property detection device is characterized in that the clamping mechanism is arranged on the mobile trolley, the clamping mechanism is used for fixing the measured valve, the storage tank is arranged on the mobile trolley, the adjusting assembly comprises an adjusting valve and an isolation valve, the input end of the adjusting valve is communicated with the storage tank, the output end of the adjusting valve is communicated with the input end of the isolation valve, and the output end of the isolation valve is communicated with the measured valve. The measuring port of the pressure gauge is communicated between the isolation valve and the measured valve, and is used for measuring the pressure drop of the measured valve. The mobile trolley can freely move in the workshop, so that the detection device can move to the side of the measured valve, long-distance transportation is not needed, and manpower and material resources are saved. The high-pressure gas in the storage tank flows through the adjusting valve and the isolation valve in sequence and provides high-pressure gas to the inside of the measured valve, and the adjusting valve adjusts the air pressure in the measured valve to the test pressure value. Then, the value of the pressure gauge is observed to obtain the pressure drop of the measured valve in a certain time after the pressure in the measured valve reaches the test pressure and tends to be stable. Finally, the pressure drop rate is calculated until the measured valve meets the design requirements and is installed into the process piping system. The valve sealing property detection device aims at performing the leakage rate test on the measured valve in an offline state before the valve is installed into the process piping, ensures that the measured valve meets the requirements before installation, ensures that the leakage rate test of the measured valve after installation into the process piping system is qualified at one time, reduces rework, and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a first structural schematic view of a valve sealing property detection device provided by the utility model embodiment;

[0025] Figure 2 FIG. 2 is a second structural schematic view of the valve sealing property detection device provided by the utility model embodiment;

[0026] Figure 3 FIG. 3 is a first structural schematic view of a clamping mechanism provided by the utility model embodiment;

[0027] Figure 4 FIG. 4 is a second structural schematic view of the clamping mechanism provided by the utility model embodiment.

[0028] REFERENCE SIGNS:

[0029] 100, measured valve;

[0030] 1, mobile trolley; 11, base; 12, wheel; 13, handrail; 131, horizontal rod; 132, vertical rod; 133, support rod;

[0031] 2, clamping mechanism; 21, fixed seat; 211, sliding groove; 22, clamping piece; 221, sliding part; 222, clamping part; 223, limiting part; 23, locking piece;

[0032] 3, tank;

[0033] 4, regulating assembly; 41, regulating valve; 42, isolating valve;

[0034] 5, pressure gauge;

[0035] 6, clamp; 61, sleeve part; 62, fixing part. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0037] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature in the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature in the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0040] As Figures 1-4As shown, in the embodiment, the valve sealing detection device comprises a mobile trolley 1, a clamping mechanism 2, a storage tank 3, an adjusting assembly 4 and a pressure gauge 5. The clamping mechanism 2 is arranged on the mobile trolley 1 and used for fixing the measured valve 100. The storage tank 3 is arranged on the mobile trolley 1. The adjusting assembly 4 comprises an adjusting valve 41 and an isolation valve 42. The input end of the adjusting valve 41 is communicated with the storage tank 3. The output end of the adjusting valve 41 is communicated with the input end of the isolation valve 42. The output end of the isolation valve 42 is communicated with the measured valve 100. The pressure gauge 5 has a measuring port communicated between the isolation valve 42 and the measured valve 100 and is used for measuring the pressure drop of the measured valve 100. Specifically, the mobile trolley 1 can be arranged as a small trolley and can be freely moved in the workshop, so that the detection device can be moved to the side of the measured valve 100 without long-distance transportation, saving manpower and material resources. The clamping mechanism 2 can be arranged as a chuck and fixedly installed on the mobile trolley 1 through bolts and the like. The clamping mechanism 2 fixes the measured valve 100 on the mobile trolley 1. The storage tank 3 is arranged on the mobile trolley 1 and used for providing fluid medium. The fluid medium is high-pressure gas. The pressure regulating valve is arranged as a pressure reducing valve. The input end and the output end of the pressure regulating valve are communicated with the gas supply port of the storage tank 3 and the input end of the isolation valve 42 through gas pipes, respectively. The pressure regulating valve is used for adjusting the pressure of the high-pressure gas provided by the storage tank 3 to the measured valve 100. The output end of the isolation valve 42 is communicated with the measured valve 100 through a gas pipe. The isolation valve 42 is used for on-off of the high-pressure gas provided by the storage tank 3 to the measured valve 100. The measuring port of the pressure gauge 5 is communicated with the gas pipe between the isolation valve 42 and the measured valve 100 and is used for measuring the air pressure value in the measured valve 100.

[0041] The working process of the valve sealing detection device is as follows: the device is moved to the side of the measured valve 100, then the measured valve 100 is fixed, the isolation valve 42 is opened, the high-pressure gas in the storage tank 3 flows through the regulating valve 41 and the isolation valve 42 in turn and provides high-pressure gas to the inside of the measured valve 100, and the regulating valve 41 adjusts the gas pressure in the measured valve 100 to the test pressure value. Then, by observing the value of the pressure gauge 5, the pressure in the measured valve 100 reaches the test pressure and tends to be stable, the isolation valve 42 is closed, and the pressure drop of the measured valve 100 in a certain time is obtained by real-time observation of the pressure gauge 5. Finally, the pressure drop rate is obtained by calculation, if the pressure drop rate of the measured valve 100 meets the design requirements, the leakage rate of the measured valve 100 is qualified, if it does not meet the design requirements, the measured valve 100 needs to be removed and repaired until the measured valve 100 meets the design requirements and is installed in the process piping system. The valve sealing detection device is designed to test the leakage rate of the measured valve 100 in an offline state before the valve is installed in the process piping, to ensure that the measured valve 100 meets the requirements before installation, to ensure that the leakage rate test of the measured valve 100 after installation in the process piping system is qualified at one time, to reduce rework, and to improve work efficiency.

[0042] Further, with reference to Figures 3-4 The clamping mechanism 2 includes a fixed seat 21 and a plurality of clamping pieces 22, and the plurality of clamping pieces 22 are movably arranged on the fixed seat 21 and can clamp the outer periphery of the measured valve 100. Specifically, the fixed seat 21 is provided with a plurality of sliding grooves 211, and the plurality of sliding grooves 211 are arranged radially and spaced apart along the outer periphery of the fixed seat 21, and the plurality of clamping pieces 22 are correspondingly and slidably arranged in the sliding grooves 211. The clamping piece 22 includes a sliding part 221, a clamping part 222 and a limiting part 223, the sliding part 221 is slidably arranged in the sliding groove 211 and can approach or move away from the flange side surface of the measured valve 100, the clamping part 222 and the limiting part 223 are respectively connected to the two ends of the sliding part 221, the limiting part 223 is slidably attached to the bottom of the fixed seat 21, and the clamping part 222 can be in contact with the flange end surface of the measured valve 100. After placing the measured valve 100 on the fixed seat 21, the plurality of clamping pieces 22 are arranged around the outer periphery of the measured valve 100, the sliding part 221 is pushed to make the sliding part 221 slide along the extension direction of the sliding groove 211 and gradually approach the measured valve 100, and the limiting part 223 is slidably abutted to the bottom of the fixed seat 21 to ensure that the sliding part 221 is always located in the sliding groove 211, thereby playing a limiting role. Until the sliding part 221 abuts against the flange side surface of the measured valve 100, and at the same time, the clamping part 222 abuts against the flange end surface of the measured valve 100, the plurality of clamping pieces are clamped on the outer periphery of the measured valve 100 at the same time, so that the measured valve 100 is fixed on the fixed seat 21, which is stable and suitable for flanges of measured valves 100 of different diameters.

[0043] Further, with reference to Figures 3-4 The clamping mechanism 2 further comprises a locking member 23, the locking member 23 is rotationally connected to the sliding portion 221, and the locking member 23 is capable of being close to the clamping portion, so that the clamping portion 222 is capable of being pressed against the flange end face of the valve 100 to be tested. Specifically, the locking member 23 is provided as a locking nut, and the end portion of the sliding portion 221 is provided with an external thread, and the locking member 23 is threadedly connected with the sliding portion 221. After the plurality of clamping members are arranged around and clamped to the outer periphery of the valve 100 to be tested, the locking member 23 is rotated, and the locking member 23 can drive the clamping portion 222 to move along the axis direction of the sliding portion 221, so that the clamping portion 222 is tightly pressed against the flange end face of the valve 100 to be tested, and at the same time, the limiting portion 223 can be tightly pressed against the bottom of the fixing base 21, so that the plurality of clamping members tightly fix the valve 100 to be tested on the fixing base 21, thereby improving the clamping effect of the clamping mechanism 2 on the valve 100 to be tested.

[0044] Further, with reference to Figures 1-2 The moving trolley 1 comprises a base 11 and a plurality of wheels 12, and the plurality of wheels 12 are arranged in a matrix and rotationally arranged at the bottom of the base 11. Specifically, the wheels 12 are provided as universal wheels, and the number of the wheels 12 is four, and the four wheels 12 are arranged at the four corners of the base 11. Under the action of the wheels 12, the valve sealing performance detection device can be moved to any position in the workshop, which is convenient for the operator to test nearby, and the valve 100 to be tested does not need to be transported over a long distance, thereby reducing the labor cost.

[0045] Further, with reference to Figures 1-2 The moving trolley 1 further comprises a handrail 13, the handrail 13 comprises a horizontal rod 131 and two spaced-apart vertical rods 132, the horizontal rod 131 is connected between the two vertical rods 132, and the vertical rods 132 are fixedly connected to the base 11. Specifically, the two vertical rods 132 and the horizontal rod 131 are integrally formed by casting or the like, and the handrail 13 is pushed, so that the moving trolley 1 can be moved to any position in the workshop. The handrail 13 further comprises a supporting rod 133, the supporting rod 133 is located below the horizontal rod 131, and the two ends of the supporting rod 133 are fixedly connected to the two vertical rods 132, respectively. The supporting rod 133 supports and fixes the two vertical rods 132 of the handrail 13, which can enhance the structural strength of the handrail 13, prevent the handrail 13 from being bent and deformed, and can be used for fixing the storage tank 3.

[0046] Further, with reference to Figures 1-2The valve sealing detection device further comprises a clamp 6, the clamp 6 is arranged on the support rod 133, and the clamp 6 is sleeved on the outer periphery of the storage tank 3. Specifically, the clamp 6 comprises a sleeving part 61 and a fixing part 62 connected to the sleeving part 61, the fixing part 62 is fixedly connected to the support rod 133, the sleeving part 61 is sleeved on the outer periphery of the storage tank 3, and the storage tank 3 is fixed on the handrail 13 through the clamp 6, so that the storage tank 3 is fixed relative to the moving trolley 1, and the normal test is prevented from being affected by the shaking and tilting of the storage tank 3.

[0047] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve tightness testing device, characterized by Include: Mobile trolley (1); Clamping mechanism (2) provided on the mobile trolley (1), the clamping mechanism (2) is used for fixing the measured valve (100); Reservoir (3) provided on the mobile trolley (1); Adjustment assembly (4) comprising adjusting valve (41) and isolation valve (42), the input end of the adjusting valve (41) is communicated with the reservoir (3), the output end of the adjusting valve (41) is communicated with the input end of the isolation valve (42), the output end of the isolation valve (42) is communicated with the measured valve (100); Pressure gauge (5), the pressure gauge (5) has a measuring port, the measuring port is communicated between the isolation valve (42) and the measured valve (100), and the pressure gauge (5) is used for measuring the pressure of the measured valve (100).

2. The valve tightness detection device according to claim 1, characterized in that The clamping mechanism (2) includes a fixed seat (21) and a plurality of clamping pieces (22), a plurality of the clamping pieces (22) are movably arranged on the fixed seat (21) and can clamp the outer periphery of the measured valve (100).

3. The valve tightness detection device according to claim 2, characterized in that The fixed seat (21) is provided with a plurality of sliding grooves (211), and a plurality of the sliding grooves (211) are arranged radially and spaced apart along the outer periphery of the fixed seat (21), and a plurality of the clamping pieces (22) are correspondingly and slidably arranged in the sliding grooves (211).

4. The valve tightness detection device according to claim 3, characterized in that The clamping piece (22) includes a sliding part (221), a clamping part (222) and a limiting part (223), the sliding part (221) is slidably arranged in the sliding groove (211) and can approach or away from the flange side of the measured valve (100), the clamping part (222) and the limiting part (223) are respectively connected to both ends of the sliding part (221), the limiting part (223) is slidably attached to the bottom of the fixed seat (21), and the clamping part (222) can be in contact with the flange end face of the measured valve (100).

5. The valve tightness detection device according to claim 4, characterized in that The clamping mechanism (2) further comprises a locking piece (23), the locking piece (23) is rotatably connected to the sliding part (221), and the locking piece (23) can approach the clamping part (222), so that the clamping part (222) can be pressed against the flange end face of the measured valve (100).

6. The valve tightness testing device according to claim 1, wherein The mobile trolley (1) includes a base (11) and a plurality of wheels (12), and the plurality of wheels (12) are distributed in a matrix and rotatably arranged at the bottom of the base (11).

7. The valve tightness detection device according to claim 6, characterized in that The mobile trolley (1) further comprises a handrail (13), the handrail (13) comprises a horizontal rod (131) and two spaced vertical rods (132), the horizontal rod (131) is connected between the two vertical rods (132), and the vertical rods (132) are fixedly connected to the base (11).

8. The valve tightness detection device according to claim 7, characterized in that The handrail (13) further comprises a support rod (133), the support rod (133) is located below the horizontal rod (131), and the two ends of the support rod (133) are fixedly connected to the two vertical rods (132) respectively.

9. The valve tightness detection device according to claim 8, characterized in that The valve sealing detection device further comprises a clamp (6) arranged on the support rod (133), and the clamp (6) is sleeved on the outer periphery of the storage tank (3).

10. The valve tightness detection device according to claim 9, wherein The clamp (6) comprises a sleeving part (61) and a fixing part (62) connected to the sleeving part (61), the fixing part (62) is fixedly connected to the support rod (133), and the sleeving part (61) is sleeved on the outer periphery of the storage tank (3).

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