CN220602850U - Automatic leak detector for gas leakage of valve seat of small-sized control valve - Google Patents
Automatic leak detector for gas leakage of valve seat of small-sized control valve Download PDFInfo
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- CN220602850U CN220602850U CN202322322056.6U CN202322322056U CN220602850U CN 220602850 U CN220602850 U CN 220602850U CN 202322322056 U CN202322322056 U CN 202322322056U CN 220602850 U CN220602850 U CN 220602850U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides an automatic leak detector of smart small-size control valve disk seat gas leakage, two stands perpendicular fixed dress are in the top of smart small-size electrical box, the aperture is offered to the stand inboard and is used for the transmission/receipt laser beam of laser correlation ware, its electricity of laser correlation ware and emission source part are adorned in smart small-size electrical box, its communication line is adorned in the stand, be used for the discernment to the bubble that forms in the water of leak hunting section of thick bamboo of disk seat gas leakage, smart small-size leak hunting subassembly one end is connected to the stand upper end, smart small-size leak hunting subassembly other end is used for connecting the valve that is surveyed. The advantages are that: the structure is compact, portable and convenient to operate, is not limited by the use field, can be connected with different valve pressure test equipment through the flexible air pipe and can be used, and the detection efficiency can be greatly improved. The test result is visual, and the leak detection cylinder structure made of transparent materials can be directly observed when gas leakage generates bubbles, so that the error meter caused by the leakage of the bubbles is avoided.
Description
Technical Field
The utility model relates to an automatic leak detector for gas leakage of a valve seat of a fine and small control valve.
Background
In the fields of petrochemical industry, electric power, metallurgy and the like, leakage of valve seats of valves frequently occurs, and attention is paid. In petrochemical pipeline systems, leakage of valve seats not only causes material loss and cross contamination, but also causes shutdown, production stoppage and even dangerous accidents of chemical plants, and causes a large amount of economic loss and harm.
The scholars at home and abroad and valve manufacturers conduct a great deal of researches on valve seat design, valve seat leakage mechanism and the like, and important conclusion that the valve seat leakage is related to the factors such as valve seat/valve core geometric structure design, material selection, closing force/unbalance force of an actuating mechanism, size matching and the like is obtained. However, the above-mentioned researches have focused on the valve seat design and manufacturing process, and the researches on the valve seat leakage automatic bubble detection device and the test method have been relatively few. For valve seat leakage of a metal seal valve seat general valve or a control valve, most enterprises still adopt a measuring mode of an artificial air counting bubble method or a liquid and gas collecting method, so that the outstanding problems of low labor efficiency and large measuring result error are brought. The pressure tester is provided with a simpler automatic gas leakage detecting device, the automation degree is low, the quantity of bubbles can be recorded only when the leakage is small, the variable relation between the bubble forming rate and the bubble volume can not be accurately estimated, and the measuring error is large. The valve seat gas can not be measured when being leaked slightly, and liquid in the measuring cup is easy to splash, so that the damage to a tester is very likely to be brought. The leakage detection device cannot meet the requirements of the industrial process control valve part 4 as in GB/T4213-2008 pneumatic control valve, IEC 60534-4:2021: the requirements of gas leakage detection such as IV level valve seat leakage amount and the like specified by domestic and foreign standards such as inspection and routine tests, ANSI/FCI 70-2-2013 control valve seat leakage rate and the like are not favorable for the requirements of high-quality development and test safety of factories and the promotion of automatic valves such as control valves in the national generation.
Disclosure of Invention
The utility model aims to solve the prior art problem, and provides a gas leakage automatic leak detector of a valve seat of a small-sized control valve,
in order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an automatic leak detector of smart small-size control valve disk seat gas leakage, including smart small-size electric box, the stand, laser is to penetrating ware and smart small-size leak hunting subassembly, two stands perpendicular fixed dress are in the top of smart small-size electric box, the aperture is offered to the stand inboard and is used for the transmission/receipt laser beam of laser to penetrating ware, its electricity of laser is penetrated ware and emission source part are adorned in smart small-size electric box, its communication line is adorned in the stand, be used for the discernment of forming the bubble in the aquatic of leak hunting section of thick bamboo to disk seat gas leakage, smart small-size leak hunting subassembly one end is connected to the stand upper end, smart small-size leak hunting subassembly other end is used for connecting the valve that is surveyed.
Further, the small-sized electric box comprises a bubble counter, a timer, a flow digital display meter A, a flow digital display meter B, a power switch, a timer trigger switch and a laser trigger/reset switch; the bubble counter is arranged at the right lower part of the small-sized electric box and is electrically connected with the timer and is used for metering leakage bubbles of the valve seat by the laser correlation device; the timer is arranged at the upper right of the small-sized electric box and is used for timing setting and metering of the bubble counter; the flow digital display meter A and the flow digital display meter B are arranged on the left side of the panel of the small-sized electric box and are used for displaying the gas leakage rate values of the gas flowmeter A and the gas flowmeter B; the power switch, the timer trigger switch and the laser trigger/reset switch are sequentially arranged on the side surface of the miniature electric box and are respectively used for controlling the power supply of the leak detector, the start and stop of the timer and the start and stop of the laser correlation device.
Further, the small-sized leak detection assembly comprises a leak detection cylinder, a leak detection pipe, a leak detection cylinder cover, a ball valve, a gas flowmeter A and a gas flowmeter B; the leak detection cylinder is of a transparent cylindrical structure, is connected below the leak detection cylinder cover in a threaded manner, is placed in parallel with the space between the stand columns, and is used for containing clean water; the leakage detection pipe is of an inverted L-shaped structure, a part of the leakage detection pipe is arranged in the leakage detection cylinder cover in parallel in a sealing manner, and a part of the leakage detection pipe vertically extends out of the leakage detection cylinder cover and is immersed in clean water of the leakage detection cylinder and used for a passage for leakage gas of a valve seat of a valve to be detected to enter the leakage detection cylinder; the leak detection cylinder cover is horizontally arranged above the upright post and connected with the upright post through a movable bolt, so that the leak detection cylinder cover is convenient to detach and maintain, and a capillary orifice through hole is formed in the leak detection cylinder cover, so that bubbles cannot be formed in the leak detection cylinder in vacuum during leak detection, liquid splashes during large leak and hurts people and influences the accuracy of a test result; the ball valves are arranged on the air inlets of the leak detection cylinder cover and the leak detection cylinder and the air inlet of the bypass gas flowmeter and are respectively used for controlling the on-off of the leakage gas of the valve seat of the tested valve entering the leak detection system and the on-off of the gas entering the gas flowmeter; the gas flowmeter A and the gas flowmeter B are respectively arranged at the rear ends of the bypass ball valves and are respectively used for measuring the small flow and the large flow of the gas leakage of the valve seat of the valve to be measured.
The beneficial effects of the utility model are as follows: 1. the structure is compact, portable and convenient to operate, is not limited by the use field, can be connected with different valve pressure test equipment through the flexible air pipe and can be used, and the detection efficiency can be greatly improved. The test result is visual, and the leak detection cylinder structure made of transparent materials can be directly observed when gas leakage generates bubbles, so that the error meter caused by the leakage of the bubbles is avoided.
2. The functions are complete, and the test accuracy is high. When the valve seat leaks the bubble level, the laser correlation bubble counting method of the leak detector can be adopted, the gas flowmeter can also be used for comparison measurement, the mutual correlation of the bubble counting results is formed through the laser correlation bubble counting and the high-precision gas flowmeter, the method has great significance in researching the corresponding variable relation between the bubble forming rate and the bubble volume, can greatly improve the detection accuracy, and is beneficial to solving the defect of unreasonable quantitative relation between the bubble forming rate and the bubble volume (or the bubble radius) in the existing national and industry standards. When the gas of the valve seat of the control valve leaks greatly, the gas flowmeter of the leak detector can be used for metering. In conclusion, the leak detector can meet the measurement of gas leakage of different leakage grades of the control valve, and has complete functions.
3. The degree of automation is high, safe and reliable. The safety structure design that the capillary orifice on the leak detection cylinder cover is communicated with the atmosphere in the leak detection assembly prevents liquid from splashing and hurting people caused by gas entering the leak detection cylinder when large leak occurs in the test, and improves the measurement stability. The designed leak detector has intuitive and convenient operation such as switch point control triggering timing/automatic leakage metering/automatic leakage detection of a gas flowmeter and the like and high automation degree.
Drawings
Fig. 1 is a schematic structural diagram.
1 is a small-sized electric box
1.1 is a bubble counter, 1.2 is a timer, 1.3 is a flow digital display meter A, 1.4 is a flow digital display meter B, 1.5 is a power switch, 1.6 is a timer trigger switch, and 1.7 is a laser trigger/reset switch;
2 is a column;
3 is a laser correlation device;
4 is a small leak detection component;
4.1 is a leakage detection cylinder, 4.2 is a leakage detection pipe, 4.3 is a leakage detection cylinder cover, 4.4 is a first ball valve, 4.5 is a second ball valve, 4.7 is a third ball valve, 4.6 is a gas flowmeter A, and 4.8 is a gas flowmeter B.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.
Embodiment 1 combines the attached drawing 1, a smart small-size control valve disk seat gas leakage automatic leak detector, including smart small-size electrical box 1, stand 2, laser correlation ware 3 and smart small-size leak hunting subassembly 4, two stands perpendicular fixed dress are in smart small-size electrical box's top, the aperture is seted up to the stand inboard and is used for the transmission/receipt laser beam of laser correlation ware, its electricity of laser correlation ware and emission source part are adorned in smart small-size electrical box, its communication line is adorned in the stand, be used for forming the discernment of bubble to disk seat gas leakage in leak hunting barrel's water, smart small-size leak hunting subassembly one end is connected to the stand upper end, smart small-size leak hunting subassembly other end is used for connecting the valve that is surveyed. The small hole is internally provided with a transmitting end and a receiving end of the laser correlation device.
An automatic leak detector for gas leakage of a valve seat of a small-sized control valve comprises a bubble counter 1.1, a timer 1.2, a flow digital display meter A1.3, a flow digital display meter B1.4, a power switch 1.5, a timer trigger switch 1.6 and a laser trigger/reset switch 1.7; the bubble counter is arranged at the right lower part of the small-sized electric box and is electrically connected with the timer and is used for metering leakage bubbles of the valve seat by the laser correlation device; the timer is arranged at the upper right of the small-sized electric box and is used for timing setting and metering of the bubble counter; the flow digital display meter A and the flow digital display meter B are arranged on the left side of the panel of the small-sized electric box and are used for displaying the gas leakage rate values of the gas flowmeter A and the gas flowmeter B; the power switch, the timer trigger switch and the laser trigger/reset switch are sequentially arranged on the side surface of the miniature electric box and are respectively used for controlling the power supply of the leak detector, the start and stop of the timer and the start and stop of the laser correlation device.
The gas leakage automatic leak detector comprises a leak detection cylinder 4.1, a leak detection pipe 4.2, a leak detection cylinder cover 4.3, a ball valve, a gas flowmeter A4.6 and a gas flowmeter B4.8; the leak detection cylinder is of a transparent cylindrical structure, is connected below the leak detection cylinder cover in a threaded manner, is placed in parallel with the space between the stand columns, and is used for containing clean water; the leakage detection pipe is of an inverted L-shaped structure, a part of the leakage detection pipe is arranged in the leakage detection cylinder cover in parallel in a sealing manner, and a part of the leakage detection pipe vertically extends out of the leakage detection cylinder cover and is immersed in clean water of the leakage detection cylinder and used for a passage for leakage gas of a valve seat of a valve to be detected to enter the leakage detection cylinder; the leak detection cylinder cover is horizontally arranged above the upright post and connected with the upright post through a movable bolt, so that the leak detection cylinder cover is convenient to detach and maintain, and a capillary orifice through hole is formed in the leak detection cylinder cover, so that bubbles cannot be formed in the leak detection cylinder in vacuum during leak detection, liquid splashes during large leak and hurts people and influences the accuracy of a test result; the ball valves are arranged on the air inlets of the leak detection cylinder cover and the leak detection cylinder and the air inlet of the bypass gas flowmeter and are respectively used for controlling the on-off of the leakage gas of the valve seat of the tested valve entering the leak detection system and the on-off of the gas entering the gas flowmeter; the gas flowmeter A and the gas flowmeter B are respectively arranged at the rear ends of the bypass ball valves and are respectively used for measuring the small flow and the large flow of the gas leakage of the valve seat of the valve to be measured.
An automatic leak detector for gas leakage of a valve seat of a small-sized control valve comprises a laser correlation bubble method leak detection loop, a gas small-flow leakage leak detection loop and a gas large-flow leakage leak detection loop. When the gas leakage of the valve seat of the control valve is detected, the leakage detection of the gas high-flow leakage, the leakage detection of the gas low-flow leakage and the leakage detection of the laser correlation bubble method are sequentially carried out, so that the detection accuracy can be improved, and the instrument damage and the like are avoided. During testing, the tested valve VT is arranged at the front ends of the first ball valve 4.4, the second ball valve 4.5 and the third ball valve 4.7 through flexible hoses.
1) The gas large-flow leakage detection loop consists of a third ball valve 4.7, a gas flowmeter B4.8, a flow digital display meter B1.4 and a power switch 1.5; during testing, the power switch 1.5 is turned on to enable the flow digital display meter B1.4 and the gas flowmeter B4.8 to be electrified and run, and the first ball valve 4.4 and the second ball valve 4.5 are turned off; the third ball valve 4.7 is opened; the leakage rate of the gas leaked from the valve seat of the tested valve VT through the gas flowmeter B4.8 can be displayed on the flow digital display meter B1.4 in real time.
2) The gas small-flow leakage detection loop consists of a second ball valve 4.5, a gas flowmeter A4.6, a flow digital display meter A1.3 and a power switch 1.5; during testing, the power switch 1.5 is turned on to enable the flow digital display meter A1.3 and the gas flowmeter A4.6 to be electrified and run, and the first ball valve 4.4 and the third ball valve 4.7 are turned off; the second ball valve 4.5 is opened; the leakage rate of the gas leaked from the valve seat of the tested valve VT through the gas flowmeter A4.6 can be displayed on the flow digital display meter A1.3 in real time.
3) The laser correlation bubble method leak detection loop consists of a bubble counter 1.1, a timer 1.2, a power switch 1.5, a timer trigger switch 1.6, a laser trigger/reset switch 1.7, a stand column 2, a laser correlation device 3, a leak detection cylinder 4.1, a leak detection pipe 4.2, a leak detection cylinder cover 4.3 and a first ball valve 4.4; when in test, the end of the leak detection pipe 4.2 perpendicular to the leak detection cylinder cover 4.3 is required to be immersed into the liquid (5-10 mm in depth) in the leak detection cylinder 4.1, and the ball valve 4.4 is opened; the second ball valve 4.5 and the third ball valve 4.7 are closed, the power switch 1.5 is turned on, the leakage detection time (such as 60s and 120s … …) is set by adjusting the timer 1.2, the laser trigger/reset switch 1.7 is turned on to enable the laser correlation device to work, the timer trigger switch 1.6 is pressed down to start leakage detection timing, the air bubble counter 1.1 starts counting in real time, the timing time of the timer 1.2 is over, and the number of leakage air bubbles in the set time can be displayed on the air bubble counter 1.1.
Among the 3 leak detection loops, the test results of the gas small-flow leak detection loop and the gas large-flow leak detection loop can be mutually verified, the variable relation between the bubble formation rate and the single bubble volume (or the single bubble radius) can be deduced, the accuracy of the control valve seat bubble level leakage can be improved, and the unreasonable quantitative relation between the bubble formation rate and the single bubble volume (or the single bubble radius) in the existing national and industrial standards is corrected.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (3)
1. The utility model provides a smart small-size control valve disk seat gas leakage automatic leak detector, includes smart small-size electric box, stand, laser correlation ware and smart small-size leak hunting subassembly, its characterized in that: two symmetrical upright posts are vertically and fixedly arranged above the fine small electric box, small holes are formed in the inner sides of the upright posts and used for emitting/receiving laser beams of a laser beam butt-joint device, electric and emission source components of the laser beam butt-joint device are arranged in the fine small electric box, communication wires of the electric and emission source components are arranged in the upright posts and used for identifying bubbles formed in water of a leakage detection barrel when valve seat gas leaks, the upper ends of the upright posts are connected with one end of a fine small leakage detection assembly, and the other end of the fine small leakage detection assembly is used for being connected with a tested valve.
2. An automatic leak detector for gas leakage from a valve seat of a miniature control valve as defined in claim 1, wherein: the small-sized electric box comprises a bubble counter, a timer, a flow digital display meter A, a flow digital display meter B, a power switch, a timer trigger switch and a laser trigger/reset switch; the bubble counter is arranged at the right lower part of the small-sized electric box and is electrically connected with the timer and is used for metering leakage bubbles of the valve seat by the laser correlation device; the timer is arranged at the upper right of the small-sized electric box and is used for timing setting and metering of the bubble counter; the flow digital display meter A and the flow digital display meter B are arranged on the left side of the panel of the small-sized electric box and are used for displaying the gas leakage rate values of the gas flowmeter A and the gas flowmeter B; the power switch, the timer trigger switch and the laser trigger/reset switch are sequentially arranged on the side surface of the miniature electric box and are respectively used for controlling the power supply of the leak detector, the start and stop of the timer and the start and stop of the laser correlation device.
3. An automatic leak detector for gas leakage from a valve seat of a miniature control valve as defined in claim 2, wherein: the fine and small leakage detecting assembly comprises a leakage detecting cylinder, a leakage detecting pipe, a leakage detecting cylinder cover, a ball valve, a gas flowmeter A and a gas flowmeter B; the leak detection cylinder is of a transparent cylindrical structure, is connected below the leak detection cylinder cover in a threaded manner, is placed in parallel with the space between the stand columns, and is used for containing clean water; the leakage detection pipe is of an inverted L-shaped structure, a part of the leakage detection pipe is arranged in the leakage detection cylinder cover in parallel in a sealing manner, and a part of the leakage detection pipe vertically extends out of the leakage detection cylinder cover and is immersed in clean water of the leakage detection cylinder and used for a passage for leakage gas of a valve seat of a valve to be detected to enter the leakage detection cylinder; the leak detection cylinder cover is horizontally arranged above the upright post and connected with the upright post through a movable bolt, so that the leak detection cylinder cover is convenient to detach and maintain, and a capillary orifice through hole is formed in the leak detection cylinder cover, so that bubbles cannot be formed in the leak detection cylinder in vacuum during leak detection, liquid splashes during large leak and hurts people and influences the accuracy of a test result; the ball valves are arranged on the air inlets of the leak detection cylinder cover and the leak detection cylinder and the air inlet of the bypass gas flowmeter and are respectively used for controlling the on-off of the leakage gas of the valve seat of the tested valve entering the leak detection system and the on-off of the gas entering the gas flowmeter; the gas flowmeter A and the gas flowmeter B are respectively arranged at the rear ends of the bypass ball valves and are respectively used for measuring the small flow and the large flow of the gas leakage of the valve seat of the valve to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322322056.6U CN220602850U (en) | 2023-08-29 | 2023-08-29 | Automatic leak detector for gas leakage of valve seat of small-sized control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322322056.6U CN220602850U (en) | 2023-08-29 | 2023-08-29 | Automatic leak detector for gas leakage of valve seat of small-sized control valve |
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| Publication Number | Publication Date |
|---|---|
| CN220602850U true CN220602850U (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322322056.6U Active CN220602850U (en) | 2023-08-29 | 2023-08-29 | Automatic leak detector for gas leakage of valve seat of small-sized control valve |
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| Country | Link |
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| CN (1) | CN220602850U (en) |
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2023
- 2023-08-29 CN CN202322322056.6U patent/CN220602850U/en active Active
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