CN119164568A - Industrial metal pipeline sealing detection device and detection method - Google Patents
Industrial metal pipeline sealing detection device and detection method Download PDFInfo
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- CN119164568A CN119164568A CN202411557454.9A CN202411557454A CN119164568A CN 119164568 A CN119164568 A CN 119164568A CN 202411557454 A CN202411557454 A CN 202411557454A CN 119164568 A CN119164568 A CN 119164568A
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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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- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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Abstract
The invention relates to the technical field of pipeline tightness detection, in particular to an industrial metal pipeline tightness detection device and a detection method, comprising a support column, wherein one side of the support column is provided with sealing modules, one opposite ends of the two groups of sealing modules are provided with metal pipelines, and the upper side and the lower side of each metal pipeline are provided with an upper unit detection pipe and a lower unit detection pipe; according to the invention, the normal temperature gas is filled into the metal pipeline, the first air pressure sensor is used for detecting the air pressure in the metal pipeline, the normal temperature gas is filled into the space between the metal pipeline and the cylinder body, after a period of time, the first air pressure sensor is used for measuring the air pressure again, the air pressure at two sides is compared, the metal pipeline is good in tightness when the air pressure at two times does not exceed a threshold value, the metal pipeline is poor in tightness when the air pressure at two times exceeds the threshold value, the two sets of air pressure data detected at the same temperature are compared, the sealing quality of the metal pipeline can be effectively detected, and the influence of different air temperatures on the air pressure is avoided.
Description
Technical Field
The invention relates to the technical field of pipeline tightness detection, in particular to an industrial metal pipeline tightness detection device and method.
Background
In pipeline laying, the sealing performance of the pipeline is particularly important, while the traditional metal pipeline sealing performance detection is carried out by smearing soapy water on a leakage part, and when leakage occurs, the soapy foam is found to be broken, so that the detection mode is simpler, the cost is lower, in addition, the detection is carried out by adopting an ultrasonic flaw detection technology and the like, and the configuration cost of the detection method is higher;
The invention relates to an industrial metal pipeline tightness detection device, which comprises a bottom plate, wherein bracket groups are symmetrically arranged on the bottom plate, the top of each bracket group is fixedly connected with a cylinder, a cylinder push rod is arranged on the cylinder, the end part of the cylinder push rod is fixedly connected with a connecting disc, the connecting disc is fixedly connected with a sealing plug, one sealing plug is penetratingly connected with a high-pressure air inlet pipe, an annular groove is formed in the sealing plug, the annular groove is communicated with the high-pressure air inlet pipe, a support assembly is arranged on the bottom plate, a metal pipeline is arranged on the support assembly, and the two sealing plugs are respectively inserted and connected to two sides of the metal pipeline;
However, the above patent also has the problems that firstly, the metal pipeline to be detected of the device is exposed, the air pressure is detected through the pressure sensor after a period of time, the air pressure is detected through the pressure sensor, the two times of data are compared, the air leakage is indicated when the difference exceeds a threshold value, the tightness is better when the difference does not exceed an error value, the influence of the air temperature on the air pressure is not considered, the difference between the air temperature in the morning and the air temperature in the noon is up to tens of degrees, the data of the air pressure detection in the metal pipeline at different temperatures are not represented by the direct comparison according to the principle of thermal expansion and contraction of the air, and therefore, the problem of inaccurate tightness detection exists, and therefore, the industrial metal pipeline tightness detection device and the industrial metal pipeline tightness detection method are provided for the problem.
Disclosure of Invention
The invention aims to provide an industrial metal pipeline tightness detection device and an industrial metal pipeline tightness detection method, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
As an alternative scheme of the industrial metal pipeline tightness detection device and the detection method, the industrial metal pipeline tightness detection device and the detection method comprise a bottom plate and a support column,
The two sides above the bottom plate are fixedly connected with vertical supporting columns, one side of each supporting column is provided with a sealing module, one ends of the two groups of sealing modules, which are opposite, are provided with metal pipelines, the upper and lower sides of each metal pipeline are provided with an upper unit detection pipe and a lower unit detection pipe, the inner sides of the lower unit detection pipes and the upper unit detection pipes are provided with heat insulation layers, and the outer sides of the lower unit detection pipes and the upper unit detection pipes are provided with supporting mechanisms;
the top of the support column is fixedly connected with a lifting mechanism, the free end of the lifting mechanism is fixedly connected with an upper unit detection tube, and a transparent observation plate is embedded in the center of the upper unit detection tube;
The inner side of the lower unit detection tube is fixedly connected with a heating body, and one side of the heating body is provided with a second temperature sensor which is fixedly connected with the lower unit detection tube;
The upper rear side of the bottom plate is fixedly connected with a gas heating module, the top of the gas heating module is communicated with a second communicating pipe and a first communicating pipe which are distributed left and right, the other side of the second communicating pipe is communicated with a second pump body which is fixedly connected with the bottom plate, the other end of the second pump body is communicated with a fourth communicating pipe, the fourth communicating pipe is arranged inside the sealing module, the outer side of the other end of the fourth communicating pipe is provided with a second one-way valve, the other end of the first communicating pipe is communicated with a first pump body which is fixedly connected with the bottom plate, the other end of the first pump body is communicated with a third communicating pipe, and the other end of the third communicating pipe is communicated with a lower unit detecting pipe;
The lower unit detection tube is provided with a supporting block fixedly connected with the bottom plate below, and a display screen vertically arranged is arranged on the front side above the bottom plate.
As an alternative scheme of the industrial metal pipeline tightness detection device and the industrial metal pipeline tightness detection method, the industrial metal pipeline tightness detection device comprises the following steps that two sides of the lower end face of the upper unit detection pipe are provided with strip-shaped convex blocks, two sides of the upper end face of the lower unit detection pipe are provided with strip-shaped grooves, and the upper unit detection pipe is tightly matched with the strip-shaped grooves of the lower unit detection pipe through the strip-shaped convex blocks.
In pipeline laying, the sealing performance of the pipeline is particularly important, the traditional metal pipeline sealing performance detection is carried out by smearing soapy water on the leakage part, soap bubbles are found to be broken when leakage occurs, the detection mode is simpler, the cost is lower, in addition, the detection is carried out by adopting an ultrasonic flaw detection technology and the like, the detection method is higher in configuration cost, when the pipeline sealing performance detection is carried out by the existing device, the metal pipeline to be detected is exposed, the air pressure is detected by filling air into the interior of the existing device, the air pressure is detected by the pressure sensor, the air pressure detection is carried out after a period of time, the two data are compared, the air leakage is indicated when the difference exceeds a threshold value, the sealing performance is better when the difference does not exceed an error value, the device does not consider the influence of air temperature on the air pressure, the difference between the air temperature in the morning and the air temperature in noon in some areas is up to tens of degrees, according to the principle of thermal expansion and cold contraction of the air, the device is characterized in that when in use, the metal pipeline is placed in a cylinder surrounded by a lower unit detection pipe and an upper unit detection pipe, the metal pipeline is fixed through a sealing module and a supporting mechanism, then the metal pipeline is filled with normal temperature gas, the air pressure in the metal pipeline is detected through a first air pressure sensor, the room temperature gas is filled into the space between the metal pipeline and the cylinder, after a period of time, the air pressure is measured again through the first air pressure sensor, and after the air pressure at two sides is compared, the metal pipeline has good tightness when the air pressure at two times does not exceed a threshold value, when the two air pressures exceed the threshold value, the metal pipeline is poor in tightness, and the two sets of air pressure data detected at the same temperature are compared, so that the sealing quality of the metal pipeline can be effectively detected, and the influence of different air temperatures on the air pressure is avoided.
The industrial metal pipeline tightness detection device comprises a sealing module, a movable shaft and a second sealing disk, wherein the outer side of the first hydraulic shaft is fixedly connected with a support column, the free end of the first hydraulic shaft is fixedly connected with the movable shaft, the other end of the movable shaft is fixedly connected with the second sealing disk, the outer side of the second sealing disk is provided with an annular sealing ring, the center of the other end of the second sealing disk is fixedly connected with a sealing mechanism, the other end of the sealing mechanism is contacted with a metal pipeline, the upper side and the lower side of the metal pipeline are contacted with supporting mechanisms, and a second air pressure sensor is arranged on one opposite end face of each of the two second sealing disks;
The sealing mechanism comprises a sliding shaft and a sealing disc, one side of the sliding shaft is fixedly connected with the second sealing disc, the other end of the sliding shaft is fixedly connected with the sealing disc, the other end faces of the sealing discs are fixedly connected with first sealing discs, a first air pressure sensor for detecting air pressure inside a metal pipeline is arranged at the other end of the first sealing disc on one side, and a fourth communicating pipe is connected inside the first sealing disc on the other side;
The inside a plurality of first pressure sensor that all fixedly connected with of one side of shutoff dish was circular orbit setting to the equal fixedly connected with ring of relative terminal surface of two sets of shutoff dishes, and evenly distributed's sound sensor is all installed to the inboard of ring.
As an alternative scheme of the industrial metal pipeline tightness detection device and method, reinforcing rods which are obliquely arranged are fixedly connected to the outer sides of sliding shafts, and the other ends of the reinforcing rods are fixedly connected with plugging discs.
As an alternative scheme of the industrial metal pipeline tightness detection device and the industrial metal pipeline tightness detection method, the outer diameter of the sealing ring is 1.1 times that of the second sealing disc.
When carrying out the sealing of metal pipeline, the sliding shaft drives the shutoff dish and removes, the first sealing disk of shutoff dish one side is closely laminated with metal pipeline's both ends terminal surface, realize the sealing to metal pipeline, and the first pressure sensor who sets up can detect the extrusion pressure to metal pipeline, ensure to seal, its ring covers in metal pipeline's both ends outside, when port sealing is poor appears, when gas leakage appears, when its sound sensor detects the sound of both ends gas leakage, it is not good to state both ends sealing this moment, need readjust the position to seal, the second sealing disk of setting, lower unit detecting tube and last unit detecting tube can enclose into a cavity, the inside metal pipeline that sets up of cavity, the inside normal atmospheric temperature gas that fills of cavity simultaneously, at this moment effectively guarantee that metal pipeline is in same temperature environment, ensure that metal pipeline leakproofness detects data is accurate, when the bad in appearance metal pipeline leakproofness, the inside atmospheric pressure of cavity that its second sealing disk, lower unit detecting tube and last unit detecting tube enclose is increased, the second atmospheric pressure sensor data increase, can carry out the leakproofness detection of two kinds of methods to metal pipeline, ensure to detect data accuracy.
As an alternative scheme of the industrial metal pipeline tightness detection device and method, the support mechanism comprises a second hydraulic rod, a support frame and support arms, wherein the outer sides of the second hydraulic rod on the upper side and the lower side are respectively fixedly connected with an upper unit detection pipe and a lower unit detection pipe, the free ends of the second hydraulic rod are fixedly connected with the support frame, the other ends of the support frame are fixedly connected with the support arms, and the support arms on the upper side and the lower side are staggered.
When fixing the metal pipeline, the support frames and the support arms on the upper side and the lower side are mutually close to be used for clamping the metal pipeline to realize fixation, and the support arms on the upper side and the lower side are staggered, so that the metal pipeline with different calibers is effectively fixed, and the application range is enlarged.
The industrial metal pipeline tightness detection device and the detection method are characterized in that the gas heating module comprises a heating frame, a coarse filter screen and a separation frame, the bottom of the heating frame is fixedly connected with a bottom plate, the top of the heating frame is communicated with a second communicating pipe and a first communicating pipe which are distributed left and right, the separation frame which is arranged in an L shape and divides the heating frame into a heating cavity and a filter cavity is arranged in the heating frame, a fine filter screen which is arranged vertically is fixedly connected in the separation frame, one side of the fine filter screen is provided with the coarse filter screen which is fixedly connected with the heating frame, the outer side of the separation frame is communicated with an air pipe, the outer side of the air pipe is provided with a first one-way valve, and the heating cavity of the heating frame is internally provided with the heating screen and a first temperature sensor which are distributed up and down.
The heating net inside the heating frame can heat the gas input into the metal pipeline, the lower unit detection pipe and the upper unit detection pipe are consistent in input temperature, detection data of the first air pressure sensor can be effectively ensured, the set coarse filter net and the set fine filter net can filter external gas, impurities are prevented from entering the heating net, the set air pipe and the first one-way valve ensure that the gas can flow unidirectionally, hot air backflow is avoided, the set first temperature sensor can detect the internal temperature of the heating frame, and the input temperature is ensured to be proper.
As an alternative scheme of the industrial metal pipeline tightness detection device and method, the lifting mechanism comprises a mounting frame and a third hydraulic rod, the bottom of the mounting frame is fixedly connected with a support column, the third hydraulic rod is fixedly connected above the mounting frame, the free end of the third hydraulic rod is fixedly connected with a supporting table, the other end of the supporting table is fixedly connected with a connecting block, and the other end of the connecting block is fixedly connected with an upper unit detection pipe.
As an alternative scheme of the industrial metal pipeline tightness detection device and method, a guide column which is vertically arranged is fixedly connected to one side above the supporting table, and the outer side of the guide column is in sliding connection with the mounting frame.
The third hydraulic rod can drive the support table and the connecting block to move, so that the upper unit detection tube is driven to automatically move up and down, the metal tube is convenient to install, and the support table is ensured to stably move up and down by the guide column.
As an alternative scheme of the industrial metal pipeline tightness detection device and method, the heating body comprises a protection frame, a fan and a heating rod, wherein the bottom of the protection frame is fixedly connected with a lower unit detection pipe, the fan is arranged in the protection frame, the heating rod fixedly connected with the protection frame is arranged above the fan, and an air permeable net sheet fixedly connected with the protection frame is arranged above the heating rod.
And after the temperature outside the metal pipeline gradually decreases, the temperature can be detected through the second temperature sensor, when the temperature decreases, the heating rod inside the protective frame starts heating gas, and the fan drives air to flow, so that the gas outside the metal pipeline is heated, the metal pipeline is ensured to be at the same temperature for a long time, and the detected data is ensured to be accurate.
As an alternative scheme of the industrial metal pipeline tightness detection device and the detection method, the detection method comprises the following steps:
the method comprises the steps that firstly, a lifting mechanism is started to drive an upper unit detection pipe to move upwards for a certain distance, then a metal pipeline is placed inside a lower unit detection pipe from the side face, and then the lifting mechanism is reset;
Step two, a plurality of supporting mechanisms are synchronously started and contacted with the metal pipeline to realize pre-fixing and position adjustment, so that the metal pipeline is positioned in the center of a cylinder body surrounded by an upper unit detection pipe and a lower unit detection pipe, then sealing modules at two sides are started to drive the sealing mechanisms to move, the sealing mechanisms are mutually closed and closely contacted with two ends of the metal pipeline to realize sealing, in the process, the supporting mechanisms slowly loosen, the metal pipeline is ensured to be subjected to left-right position adjustment under the action of the detection modules, and after the sealing modules are gradually fixed, the supporting mechanisms are started again to realize further contact fixation;
step three, the gas heating module is started, normal-temperature air in the gas heating module is conveyed into the metal pipeline through the second pump body, and the air pressure in the metal pipeline is detected through the first air pressure sensor;
pumping normal-temperature gas in the gas heating module into the metal pipeline and the inner sides of the lower unit detection pipe and the upper unit detection pipe through the first pump body, and providing a stable normal-temperature environment for the metal pipeline;
Detecting the temperature of the outer side of the metal pipeline through a second temperature sensor, and stabilizing the temperature of the outer side of the metal pipeline through a heating body in the long-time use process;
and step six, after a period of time, detecting the air pressure again by the first air pressure sensor, and then comparing the air pressure twice.
Compared with the prior art, the invention has the beneficial effects that:
When the device is used, a metal pipeline is placed in a cylinder body surrounded by a lower unit detection pipe and an upper unit detection pipe, the metal pipeline is fixed through a sealing module and a supporting mechanism, normal temperature gas is filled in the metal pipeline, the air pressure in the metal pipeline is detected through a first air pressure sensor, normal temperature gas is filled in a space between the metal pipeline and the cylinder body, after a period of time, the air pressure is measured again through the first air pressure sensor, the air pressure on two sides is compared, when the air pressure on two sides does not exceed a threshold value, the metal pipeline is good in sealing performance, when the air pressure on two times exceeds the threshold value, the metal pipeline is poor in sealing performance, and the two groups of air pressure data detected at the same temperature are compared, so that the sealing quality of the metal pipeline can be effectively detected, and the influence of different air temperatures on the air pressure is avoided;
When the metal pipeline is sealed, the sliding shaft drives the sealing disc to move, the first sealing disc on one side of the sealing disc is tightly attached to the end surfaces of the two ends of the metal pipeline, so that the metal pipeline is sealed, and the first pressure sensor can detect extrusion pressure on the metal pipeline, so that the sealing is ensured;
the circular rings are covered on the outer sides of the two ends of the metal pipeline, when the port is poor in sealing, and when gas leakage occurs, the sound sensor detects the sound of the gas leakage at the two ends, which indicates that the two ends are poor in sealing, and the positions of the two ends need to be readjusted for sealing;
The second sealing disc, the lower unit detection tube and the upper unit detection tube can be arranged to form a cavity, a metal pipeline is arranged in the cavity, meanwhile, normal-temperature gas is filled in the cavity, the metal pipeline is effectively guaranteed to be in the same temperature environment, accurate detection data of the metal pipeline are ensured, when poor sealing of the metal pipeline occurs, air pressure in the cavity formed by the second sealing disc, the lower unit detection tube and the upper unit detection tube is increased, data of the second air pressure sensor is increased, sealing detection of the metal pipeline by two methods can be carried out, and accurate detection data are ensured;
After the temperature outside the metal pipeline is gradually reduced, the temperature can be detected by the second temperature sensor, when the temperature is reduced, heating gas is started by a heating rod inside the protective frame, and air is driven by the fan to flow, so that the gas outside the metal pipeline is heated, the metal pipeline is ensured to be at the same temperature for a long time, and the detected data is ensured to be accurate;
When fixing the metal pipeline, the supporting frames and the supporting arms on the upper side and the lower side are mutually close to be used for clamping the metal pipeline to realize fixation, and the supporting arms on the upper side and the lower side are staggered, so that the metal pipeline with different calibers is effectively fixed, and the application range is enlarged;
The heating net inside the heating frame can heat the gas input into the metal pipeline, the lower unit detection pipe and the upper unit detection pipe are consistent in input temperature, detection data of the first air pressure sensor can be effectively ensured, the set coarse filter net and the set fine filter net can filter external gas, impurities are prevented from entering the heating net, the set air pipe and the first one-way valve ensure that the gas can flow unidirectionally, hot air backflow is avoided, the set first temperature sensor can detect the internal temperature of the heating frame, and the input temperature is ensured to be proper.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an industrial metal pipeline tightness detection device and detection method;
FIG. 2 is a front view of an industrial metal pipe tightness detection device and detection method;
FIG. 3 is a cross-sectional view of an industrial metal pipe tightness detection device and detection method seal module;
FIG. 4 is a cross-sectional view of an industrial metal pipe tightness detection device and detection method sealing mechanism;
FIG. 5 is a side view of an industrial metal pipe tightness detection device and detection method for lower and upper unit detection pipes;
FIG. 6 is a schematic structural view of an industrial metal pipe tightness detection device and a detection method supporting mechanism;
FIG. 7 is a partial cross-sectional view of an industrial metal pipe tightness detection device and detection method gas heating module;
FIG. 8 is a schematic diagram of a device and method for detecting tightness of industrial metal pipes;
Fig. 9 is a cross-sectional view of a heating body of an industrial metal pipe tightness detection device and a detection method.
In the figure, 1, a bottom plate; 2, a support column; 3, sealing the module; 301, first hydraulic rod, 302, moving shaft, 303, second sealing disc, 304, sealing mechanism, 3042, sliding shaft, 3043, sealing disc, 3044, reinforcing rod, 3045, first sealing disc, 3046, circular ring, 3047, sound sensor, 3048, first pressure sensor, 3049, first pressure sensor, 305, sealing ring, 306, second pressure sensor, 4, supporting block, 5, lower unit detecting tube, 6, upper unit detecting tube, 7, supporting mechanism, 701, second hydraulic rod, 702, supporting frame, 703, supporting arm, 8, gas heating module, 801, heating frame, 802, coarse filter screen, 803, separating frame, 804, fine filter screen, 805, gas pipe, 806, first one-way valve, 807, heating network, 808, first temperature sensor, 9, first connecting tube, 10, first pump body, 11, second connecting tube, 12, second pump body, 13, lifting mechanism, 1301, mounting frame, 1302, third hydraulic rod, 1303, supporting table, 1304, 14, guiding plate, 15, 17, second connecting tube, 17, third connecting tube, fourth heat insulation layer, 220, heat insulation layer, 802, coarse filter screen, 803, separating frame, 804, fine filter screen, 805, gas pipe 806, first one-way valve, 807, heating layer, heat insulation layer 808, first heat insulation layer, 10, third connecting tube, 10, sealing layer, 17, sealing layer, sealing.
Detailed Description
Example 1:
referring to fig. 1,2 and 5, the present invention provides a technical solution:
an industrial metal pipeline tightness detection device and a detection method thereof comprise a bottom plate 1 and a support column 2,
The two sides above the bottom plate 1 are fixedly connected with a vertical supporting column 2, one side of the supporting column 2 is provided with a sealing module 3, one opposite ends of the two groups of sealing modules 3 are provided with metal pipelines 20, the upper and lower sides of the metal pipelines 20 are provided with an upper unit detection pipe 6 and a lower unit detection pipe 5, the inner sides of the lower unit detection pipe 5 and the upper unit detection pipe 6 are provided with heat insulation layers 16, and the outer sides of the lower unit detection pipe 5 and the upper unit detection pipe 6 are provided with supporting mechanisms 7;
The top of the pillar 2 is fixedly connected with a lifting mechanism 13, the free end of the lifting mechanism 13 is fixedly connected with the upper unit detection tube 6, and a transparent observation plate 14 is embedded in the center of the upper unit detection tube 6;
a heating body 22 is fixedly connected to the inner side of the lower unit detection tube 5, and a second temperature sensor 21 fixedly connected with the lower unit detection tube 5 is arranged on one side of the heating body 22;
the gas heating module 8 is fixedly connected to the rear side above the bottom plate 1, a second communicating pipe 11 and a first communicating pipe 9 which are distributed left and right are communicated to the top of the gas heating module 8, a second pump body 12 which is fixedly connected with the bottom plate 1 is communicated to the other side of the second communicating pipe 11, a fourth communicating pipe 18 is communicated to the other end of the second pump body 12, the fourth communicating pipe 18 is arranged inside the sealing module 3, a second one-way valve 19 is arranged outside the other end of the fourth communicating pipe 18, a first pump body 10 which is fixedly connected with the bottom plate 1 is communicated to the other end of the first communicating pipe 9, a third communicating pipe 17 is communicated to the other end of the first pump body 10, and the other end of the third communicating pipe 17 is communicated with the lower unit detecting pipe 5;
A supporting block 4 fixedly connected with the bottom plate 1 is arranged below the lower unit detection tube 5, and a display screen 15 vertically arranged is arranged on the front side above the bottom plate 1.
The two sides of the lower end face of the upper unit detection tube 6 are respectively provided with a bar-shaped convex block, the two sides of the upper end face of the lower unit detection tube 5 are respectively provided with a bar-shaped groove, and the upper unit detection tube 6 is tightly matched with the bar-shaped grooves of the lower unit detection tube 5 through the bar-shaped convex blocks.
The detection method comprises the following steps:
Step one, driving the upper unit detection tube 6 to move upwards by a certain distance by starting the lifting mechanism 13, then placing the metal pipeline 20 inside the lower unit detection tube 5 from the side, and then resetting the lifting mechanism 13;
step two, a plurality of supporting mechanisms 7 are synchronously started and contacted with the metal pipeline 20 to realize pre-fixing and position adjustment, so that the metal pipeline 20 is positioned in the center of a cylinder body formed by the upper unit detection pipe 6 and the lower unit detection pipe 5, then the sealing modules 3 at two sides are started to drive the sealing mechanisms 304 to move, the sealing mechanisms 304 are mutually closed and closely contacted with two ends of the metal pipeline 20 to realize sealing, in the process, the supporting mechanisms 7 are slowly loosened to ensure that the metal pipeline 20 is subjected to left and right position adjustment under the action of the detection modules 3, and after the sealing modules 3 are gradually fixed, the supporting mechanisms 7 are started again to realize further contact fixation;
step three, the gas heating module 8 is started, normal-temperature air in the gas heating module 8 is conveyed into the metal pipeline 20 through the second pump body 12, and the air pressure in the metal pipeline 20 is detected through the first air pressure sensor 3049;
Pumping normal-temperature gas in the gas heating module 8 into the metal pipeline 20 and the inner sides of the lower unit detection pipe 5 and the upper unit detection pipe 6 through the first pump body 10, and providing a stable normal-temperature environment for the metal pipeline 20;
Step five, detecting the temperature outside the metal pipe 20 by a second temperature sensor 21, and stabilizing the temperature outside the metal pipe 20 by a heating body 22 during long-time use;
and step six, after a period of time, the first air pressure sensor 3049 detects the air pressure again, and then the air pressure is compared twice.
In pipeline laying, the sealing performance of the pipeline is particularly important, the traditional metal pipeline sealing performance detection is carried out by smearing soapy water on the leakage part, soap bubbles are found to be broken when leakage occurs, the detection mode is simpler, the cost is lower, in addition, the detection is carried out by adopting an ultrasonic flaw detection technology and the like, the detection method is higher in configuration cost, when the pipeline sealing performance detection is carried out by the existing device, the metal pipeline to be detected is exposed, the air pressure is detected by filling air into the interior of the existing device, the air pressure is detected by the pressure sensor, the air pressure detection is carried out after a period of time, the two data are compared, the air leakage is indicated when the difference exceeds a threshold value, the sealing performance is better when the difference does not exceed an error value, the device does not consider the influence of air temperature on the air pressure, the difference between the air temperature in the morning and the air temperature in noon in some areas is up to tens of degrees, according to the principle of thermal expansion and cold contraction of the air, the data of the air pressure detection in the metal pipeline is directly compared at different temperatures, the data are not representative, the interval time between the two detection is long, the temperature difference is large, and the problem of inaccurate tightness detection exists, the device is characterized in that when in use, the metal pipeline 20 is placed in a cylinder body surrounded by a lower unit detection pipe 5 and an upper unit detection pipe 6, two ends of the metal pipeline 20 are sealed through a sealing module 3 and a supporting mechanism 7, normal temperature air is filled into the metal pipeline 20, the air pressure in the metal pipeline 20 is detected through a first air pressure sensor 3049, the room temperature air is filled into the space between the metal pipeline 20 and the cylinder body, at the moment, the metal pipeline 20 is ensured to be in the same temperature range for a long time, after a period of time, the air pressure is measured again through the first air pressure sensor 3049, through the comparison of the air pressures at two sides, when the air pressure at two times does not exceed the threshold value, the metal pipeline 20 is good in sealing performance, and when the air pressure at two times exceeds the threshold value, the metal pipeline 20 is poor in sealing performance, and the comparison of the two sets of air pressure data detected at the same temperature can effectively detect the sealing quality of the metal pipeline 20 and avoid the influence of different air temperatures on the air pressure;
In this embodiment, the transparent observation plate 14 is disposed in the center of the upper unit detection tube 6, so that the internal condition is convenient to observe, the heat insulation layer 16 is installed on the inner sides of the lower unit detection tube 5 and the upper unit detection tube 6, the heat insulation layer 16 can perform heat insulation, so as to effectively reduce the dissipation of temperature, and after the normal temperature gas is injected into the outer side of the metal tube 20, the gas is not injected in the waiting time, so that the air pressure of the outer side of the metal tube 20 is in an equilibrium state, but in the waiting time, the environment outside the detection tubes affects the temperature inside the upper unit detection tube 6 and the lower unit detection tube 5, after the temperature is reduced, the internal temperature of the upper unit detection tube and the lower unit detection tube 5 can be heated to a certain extent through the heating body 22, ensuring that the temperature is in the state of just injected temperature, ensuring the accuracy of detection data, setting normal-temperature gas above the highest temperature of one day in the area, reserving a certain margin for temperature reduction when the temperature is higher than the temperature outside the device, and being influenced by external environment, heating by a heating body 22 when the temperature is reduced, conversely, ensuring that the temperature of the normal-temperature gas is lower than the temperature outside the device and is not preferable because the heating body 22 can only raise temperature and cannot lower temperature, and ensuring the accuracy of detection, wherein the input gas temperature is in a constant range, the initial value of the normal-temperature gas is constant, the temperature in the device can fluctuate in a small range, the influence on the detection result is small when the temperature is up and down by 3 ℃, and the accuracy of the detected data can be ensured;
When gas is injected into the metal pipeline 20, normal temperature gas in the heating module 8 is injected into the metal pipeline 20 through the second pump body 12, normal temperature gas in the heating module 8 is injected into a cavity outside the metal pipeline 20 through the first pump body 9, the temperature is ensured to be constant, and the arrangement of the second one-way valve 19 prevents the gas from flowing back;
The temperature and the atmospheric pressure that each sensor shows can demonstrate through display screen 15, makes things convenient for personnel to when going up unit detecting tube 6 and lower unit detecting tube 5 butt joint, go up unit detecting tube 6 and lower unit detecting tube 5's bar recess through the bar lug and closely cooperate, can effectively guarantee its leakproofness, avoid the gas to leak outward.
Example 2
In this embodiment, as shown in fig. 3 and fig. 4, the seal module 3 includes a first hydraulic rod 301, a movable shaft 302, and a second seal disc 303, where the outer side of the first hydraulic rod 301 is fixedly connected to the support column 2, the free end of the first hydraulic rod 301 is fixedly connected to the movable shaft 302, the other end of the movable shaft 302 is fixedly connected to the second seal disc 303, the outer side of the second seal disc 303 is provided with an annular seal ring 305, the center of the other end of the second seal disc 303 is fixedly connected to a seal mechanism 304, the other end of the seal mechanism 304 contacts the metal pipe 20, the upper and lower sides of the metal pipe 20 are both contacted with the support mechanism 7, and opposite end surfaces of the two sides of the second seal disc 303 are both provided with second air pressure sensors 306;
The sealing mechanism 304 comprises a sliding shaft 3042 and a sealing disc 3043, wherein one side of the sliding shaft 3042 is fixedly connected with the second sealing disc 303, the other end of the sliding shaft 3042 is fixedly connected with the sealing disc 3043, the other end faces of the sealing disc 3043 are fixedly connected with a first sealing disc 3045, a first air pressure sensor 3049 for detecting air pressure in the metal pipeline 20 is arranged at the other end of the first sealing disc 3045 on one side, and a fourth communicating pipe 18 is connected in the first sealing disc 3045 on the other side;
The inside of one side of above-mentioned shutoff dish 3043 all fixedly connected with is a plurality of first pressure sensor 3048 that circular orbit set up to the ring 3046 of all fixedly connected with of relative terminal surface of two sets of shutoff dishes 3043, and evenly distributed's sound sensor 3047 are all installed to the inboard of ring 3046.
Reinforcing rods 3044 are fixedly connected to the outer sides of the sliding shafts 3042, and the other ends of the reinforcing rods 3044 are fixedly connected to the plugging plates 3043.
The outer diameter of the seal ring 305 is 1.1 times the outer diameter of the second seal disk 303.
When the metal pipeline 20 is sealed, the first hydraulic rod 301 drives the movable shaft 302 to move, the movable shaft 302 drives the second sealing disk 303 to move, and then the sliding shaft 3042 drives the sealing disk 3043 to move, the first sealing disk 3045 on one side of the sealing disk 3043 is tightly attached to the end surfaces of two ends of the metal pipeline 20, so that the metal pipeline 20 is sealed, the first pressure sensor 3048 can detect extrusion pressure on the metal pipeline 20, the sealing is ensured, the circular ring 3046 covers the outer sides of the two ends of the metal pipeline 20, when the port sealing is poor, when the gas leakage occurs, the sound sensor 3047 detects the sound of the gas leakage at the two ends, the sealing at the two ends is poor, the sealing at the moment is required to be readjusted, the second sealing disk 303, the lower unit detection pipe 5 and the upper unit detection pipe 6 are arranged, the metal pipeline 20 is arranged in the cavity, normal temperature gas is filled in the cavity, the metal pipeline 20 is effectively ensured to be in the same temperature environment, the metal pipeline 20 is ensured to be accurately detected, when the surface of the metal pipeline 20 is good or the two sides of the metal pipeline 20 is not sealed, the two-unit detection pipes are accurately detected, and the two air pressure sensors 306 are accurately detected, and the air pressure of the two air pressure sensors are accurately detected, and the two air pressure sensors are increased;
In this embodiment, the sound sensor 3047 is used as auxiliary tightness detection, tightness is judged by sound generated by gas leakage, the outer diameter of the sealing ring 305 is larger than that of the second sealing disc 303, when the outer diameter of the second sealing disc 303 is matched with the inner diameters of the upper unit detection tube 6 and the lower unit detection tube 5, the sealing effect of the second sealing disc 303 can be ensured under the action of the sealing ring 305 and the heat insulation layer 16, the second air pressure sensor 306 can detect the air pressure of the cavity outside the metal pipeline 20, when the metal pipeline 20 has leakage, the external air pressure is increased, the second air pressure sensor 306 can timely detect, the effect of double detection of tightness is better, and the first sealing disc 3045 is manufactured by adopting a sealing rubber plate, so that the plugging quality of the metal pipeline 20 can be effectively ensured;
The circular ring 3046 is arranged in a ring shape and covers the outer sides of the two ends of the metal pipeline 20, and at the moment, the sound sensor 3047 in the circular ring 3046 is close to the port of the metal pipeline 20, so that effective leakage detection is facilitated at the contact part of the metal pipeline 20 and the first sealing disk 3045;
the provision of the reinforcing rod 3044 ensures stable application of the first sealing disk 3045 upon movement of the sliding shaft 3042, ensuring that the metal pipe 20 applies pressure to the first pressure sensor 3048.
Example 3
In this embodiment, as shown in fig. 6, the supporting mechanism 7 includes a second hydraulic rod 701, a supporting frame 702, and a supporting arm 703, the outer sides of the second hydraulic rod 701 on the upper and lower sides are respectively fixedly connected with the upper unit detecting tube 6 and the lower unit detecting tube 5, the free ends of the second hydraulic rod 701 are fixedly connected with the supporting frame 702, the other ends of the supporting frame 702 are fixedly connected with the supporting arm 703, and the supporting arms 703 on the upper and lower sides are staggered.
When fixing the metal pipeline 20, the support frames 702 and the support arms 703 on the upper side and the lower side are mutually close to be used for clamping the metal pipeline 20 to realize fixation, and the support arms 703 on the upper side and the lower side are staggered to be used for effectively fixing the metal pipelines 20 with different calibers, so that the support arms 703 on the upper side and the lower side can be crossed when fixing the smaller metal pipeline 20, and the application range is enlarged.
Example 4
In this embodiment, referring to fig. 7, specifically, the gas heating module 8 includes a heating frame 801, a coarse filter screen 802 and a separation frame 803, the bottom of the heating frame 801 is fixedly connected with the base plate 1, the top of the heating frame 801 is communicated with a second communication pipe 11 and a first communication pipe 9 which are distributed left and right, the separation frame 803 which is L-shaped and separates the heating frame 801 into a heating cavity and a filter cavity is installed in the heating frame 801, a fine filter screen 804 which is vertically installed is fixedly connected in the separation frame 803, a coarse filter screen 802 which is fixedly connected with the heating frame 801 is provided on one side of the fine filter screen 804, an air pipe 805 is communicated on the outer side of the separation frame 803, a first one-way valve 806 is installed on the outer side of the air pipe 805, and the heating cavity of the heating frame 801 is internally provided with a heating screen 807 and a first temperature sensor 808 which are vertically distributed.
The heating net 807 inside the heating frame 801 can heat the gas input into the metal pipeline 20, the gas inside the lower unit detecting tube 5 and the upper unit detecting tube 6 is heated, so that the temperature of the gas input into the lower unit detecting tube is consistent, the accurate two detection data of the first gas pressure sensor 3049 can be effectively ensured, the set coarse filter net 802 and fine filter net 804 can filter the external gas, impurities are prevented from entering the coarse filter net 802 and the fine filter net, the gas pipe 805 and the first one-way valve 806 ensure that the gas can only flow unidirectionally, the hot air backflow is avoided, the resource waste is caused, and the set first temperature sensor 808 can detect the internal temperature of the heating frame 801, so that the input temperature is ensured to be suitable.
Example 5
In this embodiment, as shown in fig. 8, the lifting mechanism 13 includes a mounting frame 1301 and a third hydraulic rod 1302, the bottom of the mounting frame 1301 is fixedly connected with the support column 2, the third hydraulic rod 1302 is fixedly connected with the top of the mounting frame 1301, the free end of the third hydraulic rod 1302 is fixedly connected with a supporting table 1303, the other end of the supporting table 1303 is fixedly connected with a connecting block 1304, and the other end of the connecting block 1304 is fixedly connected with the upper unit detecting tube 6.
A guide column 1305 is fixedly connected to one side above the support base 1303, and the outer side of the guide column 1305 is slidably connected to the mounting frame 1301.
The third hydraulic rod 1302 can drive the support table 1303 and the connecting block 1304 to move up and down automatically to drive the upper unit detecting tube 6, so as to mount the metal tube 20 conveniently, and the guide column 1305 ensures the stable up and down movement of the support table 1303.
Example 6
Referring to fig. 9, specifically, the heating body 22 includes a protective frame 2201, a fan 2202, and a heating rod 2203, the bottom of the protective frame 2201 is fixedly connected with the lower unit detecting tube 5, the fan 2202 is installed in the protective frame 2201, the heating rod 2203 fixedly connected with the protective frame 2201 is disposed above the fan 2202, and an air-permeable mesh 2204 fixedly connected with the protective frame 2201 is disposed above the heating rod 2203.
After the temperature outside the metal pipeline 20 is gradually reduced, the temperature can be detected by the second temperature sensor 21, when the temperature is reduced, heating gas is started by the heating rod 2203 inside the protective frame 2201, and the air is driven to flow by the fan 2202, so that the gas outside the metal pipeline 20 is heated, the metal pipeline 20 is ensured to be at the same temperature for a long time, and the detected data is ensured to be accurate;
In this embodiment, when air flows, the air is the air in the outer chamber of the metal pipe 20, and the air is not added, so that the detection data is not affected, and the ventilation net 2204 can play a role in protecting, so that the person can avoid scalding by touching the heating rod 2203 by mistake after the use is completed.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the invention, and it will be appreciated that numerous modifications, adaptations and variations of the invention can be made by those skilled in the art without departing from the principles of the invention, and that other features and advantages of the invention can be combined in any suitable manner, and that no improvement in the design or design of the invention is intended to be applied directly to other applications.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411557454.9A CN119164568A (en) | 2024-11-04 | 2024-11-04 | Industrial metal pipeline sealing detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411557454.9A CN119164568A (en) | 2024-11-04 | 2024-11-04 | Industrial metal pipeline sealing detection device and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120141762A (en) * | 2025-03-11 | 2025-06-13 | 江苏泓安生物科技有限公司 | A method and device for detecting the sealing performance of a precision filter |
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| CN102507108A (en) * | 2011-10-24 | 2012-06-20 | 广东鸿图科技股份有限公司 | Hot water leakage detecting process of pressure tube part |
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Application publication date: 20241220 |