CN113804365A - Plugging and leakage detecting structure and plugging and leakage detecting method - Google Patents
Plugging and leakage detecting structure and plugging and leakage detecting method Download PDFInfo
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- CN113804365A CN113804365A CN202111200451.6A CN202111200451A CN113804365A CN 113804365 A CN113804365 A CN 113804365A CN 202111200451 A CN202111200451 A CN 202111200451A CN 113804365 A CN113804365 A CN 113804365A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a blockage and leakage detecting structure which comprises an air inlet channel assembly, a detection channel, a floater and a detection assembly, wherein the floater is positioned in the detection channel, detection gas enters the detection channel from the air inlet channel assembly through a product to be detected, the floater moves along the detection channel under the action of the detection gas, and the detection assembly judges the blockage or leakage condition of the product to be detected by detecting the moving speed of the floater in the detection channel. The invention has the beneficial effects that: the blockage and leakage detecting structure can accurately detect the blockage and leakage degree of a product.
Description
Technical Field
The invention relates to a detection structure, in particular to a blockage and leakage detection structure and a blockage and leakage detection method.
Background
For medical equipment products, whether the pipelines of the products are blocked or leaked is very important for the performance of the products. The plugging and leakage detection can be performed by using the same detection structure. For the existing structure for detecting blockage and leakage of medical appliance products, the air pressure condition at the air inlet end is generally detected after the air is blown at the air inlet end of the product for judgment. If the air pressure at the air inlet end drops or drops slowly, the product is blocked. However, this detection method can only detect the presence of clogging or the clogging of a large part of the pore diameter, and there is no way to detect a small amount of clogging. If the blockage condition of the product is judged by detecting the air pressure change rate of the air inlet section, however, for a specific blockage condition, the air pressure change rate of the air inlet end is fast first and then slow, so that the air pressure change rate is not constant, and the air pressure change rate and the blockage condition do not present a complete correlation, so that the blockage condition is difficult to judge visually according to the air pressure change rate. Another detection scheme is to place a sensor at the outlet end of the product and then blow air at the inlet end. If the sensor does not detect gas, it indicates that there is a blockage in the product. However, this detection method still cannot detect a small amount of clogging. Therefore, it is necessary to provide an effective block and leak detection scheme, which can accurately determine the degree of block and leak.
Disclosure of Invention
In view of the above, there is a need for an improved structure and method for detecting blockage and leakage, which can accurately detect the blockage and leakage of a product.
The invention firstly provides a blockage and leakage detecting structure which comprises an air inlet channel component, a detection channel, a floater and a detection component, wherein the floater is positioned in the detection channel, detection gas enters the detection channel from the air inlet channel component through a product to be detected, the floater moves along the detection channel under the action of the detection gas, and the detection component judges the blockage or leakage condition of the product to be detected by detecting the moving speed of the floater in the detection channel.
Through adopting above-mentioned technical scheme, when the product that awaits measuring takes place to block up, the jam of the product that awaits measuring is less, and the product that awaits measuring is more unobstructed, and the atmospheric pressure that detects gas after through the product that awaits measuring is also big more. Similarly, when the product to be detected leaks, the less the product to be detected leaks, the more the product to be detected is sealed, and the larger the air pressure of the detection gas after passing through the product to be detected is. And the detection gas can act on the floater after passing through the product to be detected, so that the higher the gas pressure of the detection gas after passing through the product to be detected is, the higher the moving speed of the floater in the detection channel under the action of the detection gas is. Therefore, whether there is a blockage or a leak in the product to be measured, the blockage or the leak exhibits a correlation with the speed of movement of the float. Therefore, whether the product to be detected is blocked or leaked can be judged according to the moving speed of the floater, and the degree of the blocking or leakage of the product to be detected can be judged.
In one embodiment of the invention, the detection passage comprises a gas inlet and a gas outlet, the range of movement of the float being located between the gas inlet and the gas outlet, the gas inlet being for the detection gas to enter the detection passage, the gas outlet being for the gas between the gas outlet and the float to exit the detection passage.
Through adopting above-mentioned technical scheme, if do not set up the gas outlet, then detect gaseous entering testing channel and act on the float for the float removes in testing channel. At this time, the space of the detection passage on the side of the float away from the air inlet is gradually reduced along with the movement of the float, so that the internal air pressure starts to increase continuously. The air pressure acts on the float to become resistance to the movement of the float, thereby influencing the detection result of the detection assembly on the float. Consequently, the setting up of gas outlet makes the gas that is located the inside detection channel of the one side that the float deviates from the air inlet discharge to the external world along with the removal of float to avoid the float to remove and receive the hindrance, thereby make the testing result of determine module to the float comparatively accurate.
In one embodiment of the invention, the inner wall of the detection channel is clearance fitted with the float in the circumferential direction.
Through adopting above-mentioned technical scheme, if the inner wall of measuring channel is in the axial with the float butt, then when the float moved along measuring channel under the gaseous effect of detection, the inner wall of measuring channel can produce the frictional resistance to the float to influence the testing result of detecting element to the float. And the inner wall of the detection channel is in clearance fit with the floater in the circumferential direction, so that the detection gas not only acts on the floater to enable the floater to move in the detection channel, but also enters the clearance between the floater and the inner wall of the detection channel, and the floater is converted into the resistance of the detection gas from the resistance of the inner wall of the detection channel. The resistance of the test gas is naturally much less than the resistance of the inner wall of the test channel, so that the test gas can play a lubricating role. The detection gas moves in the same direction as the float, so that the resistance of the detection gas to the float is smaller. Therefore, the inner wall of the detection channel is in clearance fit with the floater in the circumferential direction, so that the resistance force applied to the floater in the moving process is greatly reduced, and the accuracy of the detection result of the detection assembly on the floater is improved.
In one embodiment of the invention, an included angle alpha exists between the extending direction of the detection channel and the vertical direction, and alpha is more than or equal to 0 and less than or equal to 30 degrees.
Through adopting above-mentioned technical scheme, the extending direction of detecting channel is approximately along vertical direction to make the float can rely on self gravity to reset after detecting the end, thereby can reduce cost, retrench the structure. If alpha is more than 30 degrees, the floater can be abutted against the inner wall of the detection channel under the action of self gravity when the floater is reset, so that the inner wall of the detection channel can generate resistance for preventing the floater from resetting, and the resistance is even enough to prevent the floater from resetting under the action of self gravity, thereby causing the floater not to be automatically reset.
In an embodiment of the present invention, the structure for detecting plugging and leakage further includes a reset channel, the reset channel is communicated with the detection channel, reset gas is introduced into the detection channel from the reset channel, and the float moves in a reverse direction along the detection channel under the action of the reset gas.
By adopting the technical scheme, no matter how the detection channel is arranged, the floater can complete the reset under the action of reset gas, so that the application range of the plugging and leakage detecting structure is enlarged.
In one embodiment of the invention, the detection assembly comprises a sensor that detects the time required for the float to move a preset distance along the detection channel.
By adopting the technical scheme, the detection of the moving speed of the floater in the detection channel comprises two schemes, wherein one scheme is to detect the length of the detection channel which is passed by the floater in a fixed time, and the other scheme is to detect the time required by the floater to pass through a preset distance. However, if the length of the passage of the float through the detection passage within a fixed time is detected, the sensor is required to be able to accurately measure the position of the float. At this time, the sensor is fully distributed along the detection channel, so that the position reached by the floater in the fixed time can be detected, and the length of the detection channel passed by the floater in the fixed time can be further calculated. Or by measuring the distance between the sensor and the float, which is highly demanding with respect to the measurement accuracy of the sensor. Or scales are arranged on the detection channel, and the length of the detection channel passed by the floater in a fixed time is determined by means of photographing. Therefore, the length cost requirement of the detection channel for the detection floater to pass through in the fixed time is high, relatively speaking, the time required for the detection floater to pass through the preset distance is low in the requirement on the measurement accuracy of the sensor, and at least two sensors are required.
In one embodiment of the present invention, the number of the sensors is provided in plurality, and the plurality of sensors are distributed on the detection channel at intervals along a preset distance.
In an embodiment of the present invention, the air inlet channel assembly includes a first sealing member and a second sealing member, the first sealing member and the second sealing member are respectively in sealing communication with two ends of the product to be detected, two ends of the first sealing member are respectively in sealing communication with an air supply device for providing a detection gas and the product to be detected, and two ends of the second sealing member are respectively in sealing communication with the product to be detected and the detection channel.
The invention also provides a method for detecting plugging and leakage, which comprises the following steps: and controlling the detection gas to sequentially flow through the product to be detected and the floater, and detecting the moving speed of the floater under the action of the detection gas so as to judge the blocking or leakage condition of the product to be detected.
In one embodiment of the invention, the time for the float to pass through two detection sites at a preset distance is detected to determine the moving speed of the float under the action of the detection gas.
Drawings
FIG. 1 is a schematic structural view of a front view of a leak detection and plugging structure according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a structure for detecting plugging and leak detection according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a detection channel in a structure for detecting plugging and detecting leakage according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a back view direction of a leak detection and plugging structure in the embodiment of the invention.
Reference numerals: 100. an intake passage assembly; 110. a first seal member; 120. a second seal member; 130. a first driving member; 140. a second driving member; 200. a detection channel; 210. an air inlet; 220. an air outlet; 230. an adjustment member; 300. a detection component; 400. a float; 500. a product to be tested; 600. a carrier is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Embodiments of the present invention first provide a plugging and leak detection structure as shown in fig. 1-4, including an air intake passage assembly 100, a detection passage 200, a detection assembly 300, and a float 400.
Referring to fig. 1 and 2, the intake passage assembly 100 includes a first seal 110, a second seal 120, a first driver 130, and a second driver 140. The first driver 130 drives the first seal 110 toward or away from the second seal 120 and the second driver 140 drives the second seal 120 toward or away from the second seal 120. During the inspection, the product 500 to be inspected is placed on the carrier 600, and then the product 500 to be inspected moves between the first sealing element 110 and the second sealing element 120 along with the carrier 600. In some embodiments, the leak detection structure further comprises a positioning member. After the carrier 600 moves between the first sealing member 110 and the second sealing member 120, the positioning member holds the carrier 600, so that the position of the carrier 600 is fixed. The first sealing member 110 and the second sealing member 120 move towards each other to respectively seal and communicate with two ends of the product 500 to be measured. One end of the first sealing member 110 is communicated with the product 500 to be measured, and the other end is communicated with a gas supply device for supplying a detection gas. The detection gas is selected from nontoxic and harmless gas, such as air, nitrogen, oxygen, inert gas, etc. The detection gas is preferably air in view of cost reduction. One end of the second sealing member 120 communicates with the product 500 to be tested, and the other end communicates with the test channel 200. In order to prevent the first sealing member 110 from being disconnected from the gas supply device and the second sealing member 120 from being disconnected from the sensing channel 200 during the movement of the first sealing member 110, the first sealing member 110 and the gas supply device are in sealed communication by a hose, and the second sealing member 120 and the sensing channel 200 are in sealed communication by a hose. In some embodiments, the second drive member 140 is eliminated and the first drive member 130 is retained when the first seal 110 and the second seal 120 are positioned below and above the product 500 to be tested, respectively. Under the driving of the first driving element 130, the first sealing element 110 abuts against the product 500 to be tested and drives the product 500 to be tested to move upward relative to the carrier 600 to abut against the second sealing element 120, so that the first sealing element 110 and the second sealing element 120 are in sealed communication with two ends of the product 500 to be tested. After the detection is completed, the first sealing element 110 is driven by the first driving element 130 to reset, so that the product 500 to be detected returns to the carrier 600 under the action of its own weight.
Referring to fig. 3, the detection passage 200 includes an air inlet 210 and an air outlet 220. The float 400 is located within the detection channel 200 and is movable along the detection channel 200. The range of movement of the float 400 within the detection passage 200 is between the air inlet 210 and the air outlet 220. The gas inlet 210 and the second seal 120 are in sealed communication such that the detection gas can enter the detection channel 200 from the gas inlet 210. The gas outlet 220 is used for gas between the gas outlet 220 and the float 400 to leave the detection passage 200. In some embodiments, the gas outlet 220 is provided with a regulator 230 for controlling the rate at which gas between the gas outlet 220 and the float 400 exits the detection channel 200. Specifically, the adjusting member 230 may be one of a speed control valve, an exhaust valve, a needle valve, and a shut-off valve. If the gas outlet 220 is not provided, the detection gas enters the detection passage 200 and acts on the float 400, so that the float 400 moves within the detection passage 200. At this time, the space of the detection passage 200 on the side of the float 400 facing away from the air inlet 210 is gradually reduced as the float 400 moves, so that the internal air pressure starts to increase continuously. This air pressure acts on the float 400 and acts as a resistance to the movement of the float 400, thereby affecting the detection of the float 400 by the detection assembly 300. Therefore, the gas outlet 220 is arranged to discharge the gas inside the detection channel 200 on the side of the float 400 away from the gas inlet 210 to the outside along with the movement of the float 400, so as to prevent the movement of the float 400 from being obstructed, and thus, the detection result of the detection assembly 300 on the float 400 is accurate. In the embodiment shown in FIG. 1, air inlet 210 is disposed at one end of detection channel 200, and air outlet 220 is disposed at the other end of detection channel 200. The detection gas sequentially passes through the first sealing member 110, the product 500 to be detected and the second sealing member 120 and then enters the detection passage 200. The detection gas entering the detection passage 200 acts on the float 400, so that the float 400 moves within the detection passage 200. The detection channel 200 is made of transparent plastic, an included angle d exists between the extending direction of the detection channel 200 and the vertical direction, and alpha is larger than or equal to 0 and smaller than or equal to 30 degrees. Preferably, α is 0, 5 °, 10 °, 15 °, 20 °, 30 °. In the embodiment shown in fig. 1, α is 0, so that the sensing passage 200 guides the float 400 to move in the vertical direction by the sensing gas. The extending direction of the detection passage 200 is approximately along the vertical direction, so that the float 400 can be reset by the self gravity after the detection is finished, and the cost can be reduced and the structure can be simplified. If α > 30 °, the float 400 will abut against the inner wall of the detection channel 200 under its own weight when resetting, so that the inner wall of the detection channel 200 will generate resistance force to prevent the float 400 from resetting and the resistance force is even enough to prevent the float 400 from resetting under its own weight, resulting in the float 400 not being able to automatically reset. The inner wall of the sensing passage 200 is clearance-fitted to the float 400 in the circumferential direction. If the inner wall of the detection passage 200 abuts against the float 400 in the axial direction, when the float 400 moves along the detection passage 200 under the action of the detection gas, the inner wall of the detection passage 200 generates frictional resistance against the float 400, thereby affecting the detection result of the detection assembly 300 on the float 400. And the inner wall of the sensing passage 200 is in clearance fit with the float 400 in the circumferential direction, so that the sensing gas acts not only on the float 400 to move the float 400 within the sensing passage 200 but also enters the gap between the float 400 and the inner wall of the sensing passage 200, thereby converting the float 400 from the resistance received by the inner wall of the sensing passage 200 to the resistance received by the sensing gas. The resistance of the test gas is naturally much less than the resistance of the inner wall of the test channel 200, so that the test gas can act as a lubricant. The sense gas, in turn, moves in the same direction as the float 400, so that the sense gas has less resistance to the float 400. Therefore, the inner wall of the detection passage 200 is in clearance fit with the float 400 in the circumferential direction, so that the resistance applied to the movement of the float 400 is greatly reduced, thereby improving the accuracy of the detection result of the detection assembly 300 on the float 400.
Referring to fig. 1 and 4, the sensing assembly 300 includes a plurality of sensors spaced apart outside of the sensing channel 200. The type of the sensor can be selected from a proximity sensor, a photoelectric sensor, a magnetic switch, a proximity sensor, a photoelectric sensor and the like. In the embodiment shown in fig. 1, two sensors are provided, one near the air inlet 210. The distance between the sensor close to the air inlet 210 and the air inlet 210 is D, the distance between the air inlet 210 and the air outlet 220 is D, and D/D is more than or equal to 0 and less than or equal to 0.3. Specifically, D/D may be 0, 0.1, 0.2, 0.3. The distance between the other sensor and the air inlet 210 is L, and L/D is more than or equal to 0.1 and less than or equal to 0.9. Specifically, L/D may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9. The distribution range of the sensors of the sensing assembly 300 is concentrated on the initial movement stage of the float 400 in the sensing passage 200, and the movement speed of the float 400 in the initial movement stage has a greater linear correlation with the clogging or leakage condition of the float 400, compared to the case where one of the sensors is close to the air inlet 210 and the other sensor is close to the air outlet 220. The separation distance between the two sensors is determined according to a preset distance. The sensing assembly 300 determines the speed of movement of the float 400 by the sensing gas by sensing the time required for the float 400 to move from one sensor to another within the sensing channel 200, thereby determining a jam or leak condition of the product 500 being sensed. The detection of the moving speed of the float 400 in the detection passage 200 includes two schemes, one is to detect the length of the detection passage 200 through which the float 400 passes within a fixed time, and the other is to detect the time required for the float 400 to pass through a preset distance. However, if the length of the float 400 passing through the detection passage 200 within a fixed time is detected, a sensor is required to be able to accurately measure the position of the float 400. At this time, the sensor is disposed along the detection passage 200, so that the position reached by the float 400 in the fixed time can be detected, and the length of the detection passage 200 through which the float 400 passes in the fixed time can be further calculated. Or by measuring the distance between the sensor and the float 400, which is highly demanding with respect to the accuracy of the measurement of the sensor. Or scales are provided on the sensing path 200 to determine the length of the sensing path 200 through which the float 400 passes within a fixed time by photographing. Therefore, the length of the detection channel 200 through which the detection float 400 passes in a fixed time is high in cost requirement, and relatively, the time required for the detection float 400 to pass through a preset distance is low in requirement on the measurement accuracy of the sensor, and at least two sensors are required.
The float 400 may be spherical, cylindrical, or conical in shape. The float 400 may be made of plastic or metal, and may be determined according to the installation of the detection passage 200 and the amount of the detection gas.
When the product 500 to be detected is blocked, the less the product 500 to be detected is blocked, the more the product 500 to be detected is unobstructed, and the larger the air pressure of the detection gas after passing through the product 500 to be detected is. Similarly, when the product 500 to be tested leaks, the less the product 500 to be tested leaks, the more the product 500 to be tested is sealed, and the greater the gas pressure of the detection gas after passing through the product 500 to be tested is. The detection gas passes through the product 500 to be detected and then acts on the float 400, so that the higher the gas pressure of the detection gas after passing through the product 500 to be detected, the higher the moving speed of the float 400 in the detection channel 200 under the action of the detection gas. Thus, whether there is a jam or a leak in the product 500 being tested, the jam or leak condition is correlated to the speed of movement of the float 400. Therefore, it is possible to judge not only whether the product 500 to be measured is clogged or leaked but also the degree of clogging or leakage of the product 500 to be measured according to the moving speed of the floater 400.
The invention also provides a method for detecting plugging and leakage, which comprises the following steps:
step 1: firstly, placing qualified products on a carrier 600, then moving the qualified products to a position between a first sealing element 110 and a second sealing element 120 along with the carrier 600, and clamping the carrier 600 by a positioning element;
step 2: under the driving of the first driving member 130 and the second driving member 140, the first sealing member 110 and the second sealing member 120 move towards each other to respectively and hermetically communicate with two ends of the product 500 to be tested;
and step 3: the gas supply means discharges the sensing gas, which flows through the first sealing member 110, the product 500 to be measured, and the second sealing member 120 in sequence, enters the sensing passage 200 and acts on the float 400. The floater 400 passes through two detection sites formed by two sensors distributed at intervals according to a preset distance under the action of the detection gas, and the moving speed under the action of the detection gas is determined according to the time for the floater 400 to pass through the two detection sites;
and 4, step 4: after the test is finished, the gas supply device stops releasing the detection gas, and the floater 400 resets under the action of the gravity of the floater;
and 5: under the driving of the first driving element 130 and the second driving element 140, the first sealing element 110 and the second sealing element 120 move oppositely to be disconnected from the two ends of the product 500 to be tested, the positioning element no longer clamps the carrier 600, and the qualified product moves away from between the first sealing element 110 and the second sealing element 120 along with the carrier 600;
step 6: placing the product 500 to be tested on the carrier 600, and repeating the steps 1-5;
and 7: the moving speed of the floater 400 detected by the product 500 to be detected is compared with the moving speed of the floater 400 of the qualified product, and the blockage and leakage conditions of the product 500 to be detected are determined according to the deviation of the two speeds.
Of course, the steps 1 to 5 are determined when the product 500 to be detected is detected for the first time by the plugging and leakage detecting structure, and the detection can be directly started from the step 6 in the subsequent detection process, and the detected speed is compared with the known moving speed of the floater 400 of the qualified product to determine the plugging and leakage conditions of the product 500 to be detected.
It is understood that the detection channel 200 may also extend in a horizontal direction. At this moment, this survey stifled leak hunting structure still includes the passageway that resets. The reset channel communicates with the sensing channel 200. The reset gas enters the detection channel 200 from the reset channel and acts on the floater 400, so that the floater 400 reversely moves to the air inlet 210 along the detection channel 200, the reset of the floater 400 is not limited by the placement form of the detection channel 200, and the application range of the plugging and leakage detecting structure is expanded. The reset gas is selected from nontoxic and harmless gas, such as air, nitrogen, oxygen, inert gas, etc. The reset gas is preferably air for cost reduction.
It is understood that the detection assembly 300 may employ a distance sensor when the material of the detection channel 200 is aluminum or other opaque material. At this time, the distance sensor is disposed at an end of the detection passage 200 far from the air inlet 210, and the air outlet 220 cannot be disposed at the other end of the detection passage 200, but is close to the other end of the detection passage 200. The distance sensor detects the distance between the float 400 and the distance sensor.
It will be appreciated that in actual use, clogging and leakage can now be detected in the range of 10% to 100% subject to the sensitivity of the existing detection assembly 300. However, as the sensitivity of the detection assembly 300 increases, the range of detected blockages and leaks will further increase.
The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. The structure for detecting the blockage and the leakage is characterized by comprising an air inlet channel assembly (100), a detection channel (200), a floater (400) and a detection assembly (300), wherein the floater (400) is located in the detection channel (200), detection gas enters the detection channel (200) from the air inlet channel assembly (100) through a product (500) to be detected, the floater (400) moves along the detection channel (200) under the action of the detection gas, and the detection assembly (300) judges the blockage or leakage condition of the product (500) to be detected by detecting the moving speed of the floater (400) in the detection channel (200).
2. The structure of claim 1, wherein: the detection channel (200) comprises a gas inlet (210) and a gas outlet (220), the movement range of the floater (400) is located between the gas inlet (210) and the gas outlet (220), the gas inlet (210) is used for the detection gas to enter the detection channel (200), and the gas outlet (220) is used for the gas between the gas outlet (220) and the floater (400) to leave the detection channel (200).
3. The structure of claim 1, wherein: the inner wall of the detection channel (200) is in clearance fit with the floater (400) in the circumferential direction.
4. The structure of claim 1, wherein: an included angle alpha exists between the extending direction of the detection channel (200) and the vertical direction, and alpha is more than or equal to 0 and less than or equal to 30 degrees.
5. The structure of claim 1, wherein: the leakage detection structure further comprises a reset channel, the reset channel is communicated with the detection channel (200), reset gas is introduced into the detection channel (200) from the reset channel, and the floater (400) moves reversely along the detection channel (200) under the action of the reset gas.
6. The structure of claim 1, wherein: the detection assembly (300) comprises a sensor that detects the time required for the float (400) to move a preset distance along the detection channel (200).
7. The structure of claim 6, wherein: the number of the sensors is provided with a plurality of sensors which are distributed on the detection channel (200) at intervals along a preset distance.
8. The structure of claim 1, wherein: intake passage subassembly (100) includes first sealing member (110) and second sealing member (120), first sealing member (110) with second sealing member (120) seal the intercommunication respectively the both ends of awaiting measuring product (500), the both ends of first sealing member (110) seal the intercommunication respectively and provide gaseous air feeder of detection with await measuring product (500), the both ends of second sealing member (120) seal the intercommunication respectively await measuring product (500) with detect passageway (200).
9. A method for detecting blockage and leakage is characterized in that: the method comprises the following steps: and controlling the detection gas to sequentially flow through the product (500) to be detected and the floater (400), and detecting the moving speed of the floater (400) under the action of the detection gas so as to judge the blocking or leakage condition of the product (500) to be detected.
10. The method of detecting plugging and leak-hunting according to claim 9, wherein: and detecting the time when the floater (400) passes through two detection sites at a preset distance to determine the moving speed of the floater (400) under the action of the detection gas.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200451.6A CN113804365A (en) | 2021-10-14 | 2021-10-14 | Plugging and leakage detecting structure and plugging and leakage detecting method |
| PCT/CN2021/141585 WO2023060769A1 (en) | 2021-10-14 | 2021-12-27 | Blockage and leakage detection structure, and blockage and leakage detection method |
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| CN202111200451.6A CN113804365A (en) | 2021-10-14 | 2021-10-14 | Plugging and leakage detecting structure and plugging and leakage detecting method |
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| CN113804365A true CN113804365A (en) | 2021-12-17 |
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| WO (1) | WO2023060769A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023060769A1 (en) * | 2021-10-14 | 2023-04-20 | 迈得医疗工业设备股份有限公司 | Blockage and leakage detection structure, and blockage and leakage detection method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3527689C1 (en) * | 1985-07-30 | 1986-10-09 | Beutler Maschinenbau- und Vertriebsgesellschaft Inhaber Wolfgang Beutler, 1000 Berlin | Device for determining the presence of a gas |
| GB9712072D0 (en) * | 1997-06-11 | 1997-08-13 | Boc Group Plc | Fluid detection device |
| CN102768104A (en) * | 2012-06-25 | 2012-11-07 | 苏州华爱电子有限公司 | Water dispenser used water system leak detection device and method |
| CN203549093U (en) * | 2013-09-29 | 2014-04-16 | 上海三维精密模具制造有限公司 | Air leakage detection device for valve |
| CN210243107U (en) * | 2019-04-30 | 2020-04-03 | 华帝股份有限公司 | Nozzle anti-blocking detection device |
| CN111609977A (en) * | 2020-05-20 | 2020-09-01 | 潍坊力创电子科技有限公司 | Fuel leakage alarm and implementation method thereof |
| CN212082747U (en) * | 2020-05-26 | 2020-12-04 | 青海盐湖工业股份有限公司 | A leakproofness detection device for chemical industry device |
| KR102260347B1 (en) * | 2020-08-07 | 2021-06-03 | 배광성 | Leaking water detection apparatus for underwater structure |
| CN113804365A (en) * | 2021-10-14 | 2021-12-17 | 迈得医疗工业设备股份有限公司 | Plugging and leakage detecting structure and plugging and leakage detecting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023060769A1 (en) * | 2021-10-14 | 2023-04-20 | 迈得医疗工业设备股份有限公司 | Blockage and leakage detection structure, and blockage and leakage detection method |
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| WO2023060769A1 (en) | 2023-04-20 |
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