CN115655589B - Sealing performance testing device for tubular medical instrument - Google Patents
Sealing performance testing device for tubular medical instrument Download PDFInfo
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- CN115655589B CN115655589B CN202211545802.1A CN202211545802A CN115655589B CN 115655589 B CN115655589 B CN 115655589B CN 202211545802 A CN202211545802 A CN 202211545802A CN 115655589 B CN115655589 B CN 115655589B
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Abstract
The invention discloses a sealing performance testing device for a tubular medical instrument, which is communicated with a pipeline and comprises a supporting device, an adjusting device and a flow guide device, wherein the supporting device is connected with the adjusting device, the adjusting device is communicated with the flow guide device through a pipeline, the flow guide device is communicated with the pipeline, the supporting device comprises a shell and an objective table, a working cavity is arranged on the shell, the objective table is arranged in the working cavity, a guide groove is arranged on the objective table, a clamping groove is arranged at the upper end of the guide groove, the upper end of the pipeline is clamped with the clamping groove, the adjusting device comprises a sealing seat, a sealing cavity is arranged in the sealing seat and faces the objective table, the pipeline is supported through the objective table, the pipeline is arranged along the guide groove, radial stress is carried out on the auxiliary pipeline, and the phenomenon that the detection medium exerts excessive radial force on the pipeline to cause tensile deformation is avoided.
Description
Technical Field
The invention relates to the technical field of sealing detection of tubular medical instruments, in particular to a sealing performance testing device for a tubular medical instrument.
Background
The conduit leak detector is generally used for air pressure test and inspection of medical pipelines and conventional conduits, and is used for detecting the change of internal pressure caused by leakage in a conduit by introducing quantitative gas into the conduit to be detected and controlling the balance of air flow in the conduit through a pressure measuring device, such as a high-sensitivity differential pressure sensor, so as to test the tightness of the conduit to be detected.
Most leakproofness testing arrangement adopted at present is gas or liquid, and medical pipeline is compared in conventional pipe, and is required more to the sterility, and conventional liquid medium can form great medium residue because self viscosity reason after detecting the completion, seriously influences medical pipeline's sterility demand, and conventional airtight detection can not reflect the true condition completely, influences the leakproofness and detects the precision.
In addition, the general length of medical pipeline is longer, and conventional leakproofness testing arrangement supports medical pipeline through the fixed mode of tip or multiple spot support mostly, makes the tension that inside transport medium gravity formed also bear by pipeline itself completely, causes axial tension deformation easily, influences the leakproofness and detects the precision, and does not have the accurate location of leakage point. Conventional pipeline support mode, pipeline can have great contact surface with the wall, forms the face contact, and when the pipeline leaked for expanding outward, the wall can influence the leakage point and expand outward, influences the leakproofness and detects the precision.
Disclosure of Invention
The present invention is directed to a device for testing the sealing performance of a tubular medical instrument, which solves the above problems of the related art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a tubulose medical instrument is with leakproofness testing arrangement, leakproofness testing arrangement and pipeline intercommunication, leakproofness testing arrangement includes strutting arrangement, adjusting device and guiding device, strutting arrangement and adjusting device connect, adjusting device and guiding device pipeline intercommunication, guiding device and pipeline intercommunication, strutting arrangement include casing and objective table, be equipped with the working chamber on the casing, the working chamber is arranged in to the objective table, be equipped with the guide way on the objective table, the guide way upper end is equipped with the draw-in groove, pipeline upper end and draw-in groove joint, adjusting device includes the seal receptacle, be equipped with sealed chamber in the seal receptacle, sealed chamber is towards the objective table.
Carry out various detections to the leakproofness of pipeline through this testing arrangement, improve and detect the precision, strutting arrangement is as main bearing the basis, be used for installing each other device, when examining, support the pipeline through the objective table, make the pipeline arrange along the guide way, the auxiliary line carries out radial atress, avoid detecting that the medium exerts too big radial force to the pipeline, cause tensile deformation, influence the sealed detection performance, carry out sealed detection regulation through adjusting device, be applicable to the pipeline detection of different specifications, carry out the air current drainage through guiding device, get into the pipeline with high-pressure draught, carry out the sealed detection of formula of expanding outward, provide detection space through the working chamber, guarantee the aseptic nature in detection space, when examining, make the bowl form seal receptacle down, be the back-off in the objective table outside, form relatively stable atmospheric pressure environment through the compound die is sealed, improve the leakproofness detection precision.
Furthermore, the flow guide device comprises a hot air pipe and a wet air pipe, the wet air pipe is communicated with a pipeline, the guide groove is spirally arranged, the diameter of the guide groove is gradually changed, the diameter of the guide groove is gradually decreased from bottom to top, the pipeline is spirally arranged along the guide groove, a slide way is arranged along the wall surface of the sealing cavity, and the slide way and the guide groove are matched to form a spiral guide groove;
adjusting device still includes detection element and gleitbretter, gleitbretter and slide sliding connection, gleitbretter circumference and spiral guide slot wall sealing contact, the steam pipe is towards the gleitbretter lower part, detection element and gleitbretter transmission are connected, detection element includes the positive plate, negative plate and pressure head, the gleitbretter includes the substrate, be equipped with the detection chamber on the substrate, positive plate and negative plate are arranged in opposite directions and are detecting the intracavity, positive plate and negative plate are connected with power binding post electricity respectively, set up between positive plate and the negative plate and cut the clearance, pressure head and substrate transmission are connected, pressure head inboard and pipeline crimping, be equipped with the air guide way on the pressure head, the inboard pipeline of air guide way of leading, the air guide way is kept away from pipeline one end orientation and is detected the clearance of cutting in chamber.
The wet gas flow is sent into the pipeline through the wet gas pipe, the flowing process of a liquid medium is simulated, the viscosity of the medium is improved, the detection precision of the sealing performance is convenient to improve, meanwhile, the detection residue of the wet gas flow can be reduced, the detection sterility is convenient to ensure, after the detection is finished, the pipeline is heated through hot gas, the wet gas flow is prevented from being remained in the pipeline, the pipeline is supported through the guide groove with gradually changed screw diameter, the sealing performance detection of a longer pipeline is convenient, the axial length occupied by the detection space is reduced through spiral winding, the pipeline is detected in a subarea mode through an adjusting device, the defect part is positioned through subarea detection, the positioning precision is improved, the compensation is convenient, when the detection is carried out, the objective table and the sealing seat are matched, the slide way and the guide groove are matched to form a spiral guide groove, the pipeline is subarea through the substrate, carry out the step and detect, be convenient for carry out the essence location to the defect part through advancing gradually layer by layer, slide the direction through the spiral guide slot to the substrate, positive plate and negative plate are placed and are being detected the intracavity, it has humid air current to lead to in the pipeline, under the pressure effect, make the pipeline take place the inflation, the formula leakproofness that expands outward detects, when taking place the sealed defect of open-ended, humid air current in the pipeline leaks from the defect department, through leading the air flue drainage, get into and detect the intracavity, positive plate and negative plate initial condition are down insulated through cutting the clearance, when local emergence is leaked, humid air current gets into and cuts in the clearance, along with the conductivity increase, make the positive plate, the circuit that negative plate and power constitute switches on, through the steady voltage air feed of steam pipe, promote the gleitbretter constant speed and shift up, thereby carry out automatic positioning to the defect part.
Furthermore, the gleitbretter still includes the guide vane, guide vane and slide sliding connection, is equipped with epitaxial groove on the substrate, and guide vane one end inserts in the epitaxial groove, guide vane and epitaxial groove sliding connection, and the guide vane is close to the groove bottom of epitaxial groove and sets up the spring, and the guide vane passes through spring and substrate crimping.
The substrate carries out the slip direction to the guide vane through epitaxial groove, and the guide vane keeps sliding connection state with the slide all the time, and keeps the distance unchangeable, when carrying out the pipeline detection of different pipe diameters, under spring force effect, adjusts the relative distance between substrate and the guide vane, makes the substrate slide along the pipeline surface all the time, keeps sealed relatively, is convenient for carry out the hot gas flow pressure boost and drives the gleitbretter constant speed and shift up.
Furthermore, the adjusting device further comprises a sliding ring, the sliding ring is in transmission connection with the substrate, one end of the pipeline penetrates through the middle of the sliding ring, the sliding ring is in sliding connection with the pipeline, and the inner side of the sliding ring is in sliding contact with the guide groove.
The objective table carries out the whole support to the pipeline through the guide way, set up the through-hole in the middle of the sliding ring, the pipeline passes the through-hole, when carrying out leakproofness detection, supplementary gleitbretter carries out the local sealing, thereby cut off gas, guarantee gleitbretter translation rate, set up sliding ring thickness as required, make between pipeline part and guide way tank bottom be contactless state, through the clearance that produces, when the pipeline part produces the defect, avoid the pipeline to carry out the face contact under the pressure effect and between the guide way wall, cause the face to seal under the pressure effect, cause and leak the detection, thereby improve and detect the precision.
Furthermore, the inner side of the pressure head is provided with a pressing surface, two sides of the pressing surface are provided with inclined planes, the pressing surface is a plane, and the pressure head is in compression joint with the pipeline through the inclined planes.
The pressure head is arranged behind the substrate in the air supply direction, the pressure head compresses the pipeline locally to enable the pipeline to deform locally, the local pipeline overflowing cross section pressed by the pressing surface is reduced firstly under the action of inclined planes on two sides and then is kept unchanged, and finally is gradually increased to form a shape similar to a Venturi tube.
Preferably, the inlet of the air guide channel is positioned on one side of the pressing surface close to the hot air pipe. Lead the import of air flue and be close to the pressure boost section that compresses tightly the face, carry out the water conservancy diversion along the earial drainage direction that the pipeline defect was arranged, direct leading-in detects the intracavity, prevents to mix with the rear air admission, reduces the humidity of moisture group, influences the conductivity to the influence detects the precision.
Furthermore, the detection assembly further comprises a micro-motion cylinder, the micro-motion cylinder is located in the detection cavity and is in transmission connection with the positive plate, the negative plate and the power supply form a regulating circuit, and the micro-motion cylinder is intermittently and electrically connected with the regulating circuit. When regulating circuit switched on, the removal of drive fine motion cylinder output drove the positive plate and removes to the direction of keeping away from the negative plate, and the clearance is cuted in the increase, and along with cutting the clearance increase, the circuit reenters and cuts the state, and the circuit under this humidity state does not switch on, takes place the earial drainage once more when follow-up pipeline, makes humidity further increase, and when the conductivity increased promptly, the circuit just can switch on again, is convenient for carry out the continuity and detects, improves detection efficiency.
Furthermore, an adjusting electric cylinder is arranged at the upper end of the sealing seat, the adjusting electric cylinder is tightly connected with the wall surface of the working chamber, and the output end of the adjusting electric cylinder is in transmission connection with the sealing seat. Adjust the electric jar and be the main driving source of seal receptacle, when carrying out the material loading, with the pipeline wraparound in the guide way through material loading manipulator, after the wraparound was accomplished, adjust electric jar drive seal receptacle down and objective table compound die formation enclosure space, pipeline leakproofness detects the completion back, goes upward through adjusting electric jar drive seal receptacle, separates, takes out the pipeline again, is convenient for carry out the continuity and detects.
Compared with the prior art, the invention has the following beneficial effects: the pipeline is supported by the objective table, so that the pipeline is arranged along the guide groove, the pipeline is assisted to bear force in the radial direction, and the detection medium is prevented from applying excessive tension to the pipeline to cause stretching deformation; the pipeline is supported through the guide groove with the gradually changed screw diameter, so that the sealing performance of a longer pipeline is conveniently detected, the axial length occupied by a detection space is reduced, the pipeline is subjected to partition detection through the adjusting device, a defect part is positioned through partition detection, the positioning precision is improved, the compensation is convenient, when local leakage occurs, wet air flows enter a cut-off gap, and a circuit formed by the positive plate, the negative plate and a power supply is conducted along with the increase of the conductivity, so that the defect part is automatically positioned; the thickness of the sliding ring is set as required, so that the local part of the pipeline and the bottom of the guide groove are in a non-contact state, and through the generated gap, when the local part of the pipeline has a defect, the pipeline is prevented from being in surface contact with the wall surface of the guide groove under the action of pressure, surface sealing is caused under the action of pressure, and detection omission is caused, so that the omnidirectional detection precision of the pipeline is improved; the pressing surface is used for pressing and connecting the local part of the pipeline, so that the local part of the pipeline is deformed, the shape similar to a Venturi tube is formed under the action of inclined surfaces at two sides, wet air flow is discharged from a defect part along with the increase of pressure, and the instantaneous discharge is improved, so that the detection precision is improved; when the regulating circuit switched on, the output end of the micro-cylinder was driven to move, the positive plate was driven to move in the direction away from the negative plate, the gap was cut in the increase, the continuity detection was convenient for, and the detection efficiency was improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is an enlarged view of portion A of the view of FIG. 1;
FIG. 3 is a schematic view of the stage and seal carrier of the present invention in a clamped sealing configuration;
FIG. 4 is an enlarged view of portion B of the view of FIG. 3;
FIG. 5 is a sectional view taken along line H-H of the view of FIG. 4;
FIG. 6 is an enlarged view of portion C of the view of FIG. 5;
in the figure: 1-supporting device, 11-shell, 111-working cavity, 12-object stage, 121-guide groove, 2-adjusting device, 21-sealing seat, 211-sealing cavity, 212-slideway, 22-detection component, 221-positive plate, 222-negative plate, 223-pressure head, 2231-air guide channel, 2232-pressing surface, 224-inching cylinder, 23-sliding sheet, 231-substrate, 2311-epitaxial groove, 2312-detection cavity, 232-guide sheet, 24-sliding ring, 3-guide device, 31-hot air pipe, 32-wet air pipe, 4-adjusting electric cylinder and 5-pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the technical scheme that:
as shown in fig. 1-2, a sealing performance testing device for tubular medical instrument, sealing performance testing device and pipeline 5 communicate, sealing performance testing device includes strutting arrangement 1, adjusting device 2 and guiding device 3, strutting arrangement 1 and adjusting device 2 are connected, adjusting device 2 and guiding device 3 pipeline communicate, guiding device 3 and pipeline 5 communicate, strutting arrangement 1 includes casing 11 and objective table 12, be equipped with working chamber 111 on casing 11, objective table 12 is arranged in working chamber 111, be equipped with guide way 121 on objective table 12, the upper end of guide way 121 is equipped with the draw-in groove, pipeline 5 upper end and draw-in groove joint, adjusting device 2 includes seal receptacle 21, be equipped with sealed chamber 211 in the seal receptacle 21, sealed chamber 211 is towards objective table 12.
Carry out various detections to pipeline 5's leakproofness through this testing arrangement, improve and detect the precision, strutting arrangement 1 is as main bearing the basis, be used for installing each other device, when detecting, support pipeline 5 through objective table 12, make pipeline 5 arrange along guide way 121, auxiliary line 5 carries out radial atress, avoid detecting the medium and exert too big radial force to pipeline 5, cause tensile deformation, influence sealed detection performance, seal the detection regulation through adjusting device 2, be applicable to the pipeline 5 detection of different specifications, carry out the air current drainage through guiding device 3, get into in pipeline 5 with high-pressure draught, carry out the sealed detection of formula of expanding outward, provide detection space through working chamber 111, guarantee detection space's sterility, when detecting, make seal receptacle 21 down, be the bowl form back-off in the objective table 12 outside, form relatively stable atmospheric pressure environment through compound die sealing, improve leakproofness detection precision.
As shown in fig. 2 to 6, the diversion device 3 includes a hot air pipe 31 and a wet air pipe 32, the wet air pipe 32 is communicated with the pipeline 5, the guide groove 121 is spirally arranged, the diameter of the guide groove 121 is gradually changed, the diameter of the guide groove 121 is gradually decreased from bottom to top, the pipeline 5 is spirally arranged along the guide groove 121, a slide way 212 is arranged along the wall surface of the sealing cavity 211, and the slide way 212 and the guide groove 121 are matched to form a spiral guide groove;
the adjusting device 2 further comprises a detection assembly 22 and a sliding piece 23, the sliding piece 23 is connected with the sliding way 212 in a sliding mode, the circumferential direction of the sliding piece 23 is in sealing contact with the wall surface of the spiral guide groove, the hot air pipe 31 faces the lower portion of the sliding piece 23, the detection assembly 22 is in transmission connection with the sliding piece 23, the detection assembly 22 comprises a positive plate 221, a negative plate 222 and a pressure head 223, the sliding piece 23 comprises a substrate 231, a detection cavity 2312 is formed in the substrate 231, the positive plate 221 and the negative plate 222 are arranged in the detection cavity 2312 in an opposite mode, the positive plate 221 and the negative plate 222 are respectively electrically connected with a power connection terminal, a cut-off gap is formed between the positive plate 221 and the negative plate 222, the pressure head 223 is in transmission connection with the substrate 231, the inner side of the pressure head 223 is in crimping with the pipeline 5, an air guide channel 2231 is arranged on the pressure head 223, the inner side of the air guide channel 2231 faces the pipeline 5, and the cut-off gap is formed by enabling one end, which is far away from the pipeline 5, and faces the detection cavity 2312.
Wet air flow is sent into the pipeline 5 through the wet air pipe 32, the flowing process of a liquid medium is simulated, the viscosity of the medium is improved, the detection precision of the sealing performance is convenient to improve, meanwhile, the detection residue of the wet air flow can be reduced, the detection sterility is convenient to ensure, after the detection is finished, the pipeline 5 is heated through hot air, the wet air flow is prevented from generating residue in the pipeline 5, the pipeline 5 is supported through the guide groove 121 with gradually changed spiral diameter, the sealing performance detection of a longer pipeline 5 is convenient, the axial length occupied by the detection space is reduced through spiral winding, the pipeline 5 is subjected to subarea detection through the adjusting device 2, the defect part is positioned through the subarea detection, the positioning precision is improved, the compensation is convenient, when the detection is carried out, the objective table 12 and the sealing seat 21 are matched, the slide 212 and the guide groove 121 are matched into a spiral guide groove, the pipeline 5 is divided into subareas through the substrate 231, step detection is carried out, fine positioning of the defect part is facilitated through layer-by-layer progressive, sliding guiding is carried out on the substrate 231 through the spiral guide groove, the positive plate 221 and the negative plate 222 are placed in the detection cavity 2312, wet air flows are led into the pipeline 5, the pipeline 5 is made to expand under the action of pressure, outward expansion type sealing detection is carried out, when outward opening type sealing defects occur, the wet air flows in the pipeline 5 leak from the defect part, the wet air flows are guided through the air guide channel 2231 and enter the detection cavity 2312, the positive plate 221 and the negative plate 222 are insulated through a cut-off gap in the initial state, when leakage occurs locally, the wet air flows enter the cut-off gap, along with increase of conductivity, a circuit formed by the positive plate 221, the negative plate 222 and a power supply is conducted, the air is supplied through the hot air pipe 31 for voltage stabilization, the sliding piece 23 is pushed to move upwards at a constant speed, and automatic positioning is carried out on the defect part.
As shown in fig. 3 to 5, the sliding plate 23 further includes a guiding plate 232, the guiding plate 232 is slidably connected to the sliding rail 212, the substrate 231 is provided with an extension groove 2311, one end of the guiding plate 232 is inserted into the extension groove 2311, the guiding plate 232 is slidably connected to the extension groove 2311, a spring is provided at the bottom of the guiding plate 232 close to the extension groove 2311, and the guiding plate 232 is pressed against the substrate 231 through the spring.
The substrate 231 slides and guides the guide piece 232 through the epitaxial groove 2311, the guide piece 232 always keeps a sliding connection state with the slide rail 212, the distance is kept unchanged, when the pipelines 5 with different pipe diameters are detected, the relative distance between the substrate 231 and the guide piece 232 is adjusted under the action of the elastic force of the spring, the substrate 231 always slides along the outer surface of the pipeline 5, the relative sealing is kept, and hot air flow pressurization is facilitated to drive the slide sheet 23 to move upwards at a constant speed.
As shown in fig. 4 to 5, the adjusting device 2 further includes a sliding ring 24, the sliding ring 24 is in transmission connection with the substrate 231, one end of the pipeline 5 passes through the middle of the sliding ring 24, the sliding ring 24 is in sliding connection with the pipeline 5, and the inner side of the sliding ring 24 is in sliding contact with the guiding groove 121.
Objective table 12 carries out whole support through guide way 121 to pipeline 5, set up the through-hole in the middle of the sliding ring 24, pipeline 5 passes the through-hole, when carrying out the leakproofness detection, supplementary gleitbretter 23 carries out the local sealing, thereby cut off gas, guarantee gleitbretter 23 translation rate, set up sliding ring 24 thickness as required, make between pipeline 5 part and guide way 121 tank bottom be contactless state, through the clearance that produces, when pipeline 5 part produces the defect, avoid pipeline 5 to carry out the face contact under the pressure action and between the guide way 121 wall, cause the face to seal under the pressure action, cause the hourglass to examine, thereby improve and detect the precision.
As shown in fig. 5, a pressing surface 2232 is provided on the inner side of the pressing head 223, inclined surfaces are provided on both sides of the pressing surface 2232, the pressing surface 2232 is a flat surface, and the pressing head 223 is pressed against the pipeline 5 via the inclined surfaces and the pressing surface 2232.
The pipeline 5 is locally crimped through the pressing surface 2232 on the pressing head 223, the pressing head 223 is located behind the substrate 231 in the air supply direction, the pressing surface 2232 presses the pipeline 5 locally, the pipeline 5 locally deforms, the pressing surface 2232 is pressed under the action of the inclined surfaces on the two sides to enable the overcurrent cross section of the local pipeline 5 to be firstly reduced and then kept unchanged and finally gradually increased to form a shape similar to a Venturi tube, the wet air tube 32 introduces wet air into the pipeline 5 at a constant speed, the air pressure is gradually reduced when the wet air enters the cross section to be reduced and cut off, when the tightness of the pipeline 5 is detected, the pressing head 223 moves forwards, the process of pressurizing is needed to be carried out on each part of the pipeline 5, when the defect leakage occurs locally, the wet air flows leak from the defect part along with the increase of the pressure, the instantaneous leakage amount is improved, and the detection precision is improved.
Preferably, the inlet of the air guide channel 2231 is located on the side of the compressing surface 2232 close to the hot air pipe 31. The inlet of the air guide channel 2231 is close to the pressurizing section of the pressing surface 2232, and the air guide channel guides the flow along the leakage direction of the defective arrangement of the pipeline 5, and directly guides the flow into the detection cavity 2312 to be prevented from being mixed with the air entering from the rear, so that the humidity of a moisture mass is reduced, the conductivity is influenced, and the detection precision is influenced.
As shown in fig. 5 to 6, the detecting assembly 22 further includes a micro-cylinder 224, the micro-cylinder 224 is located in the detecting cavity 2312, the micro-cylinder 224 is in transmission connection with the positive plate 221, the negative plate 222 and the power supply form a regulating circuit, and the micro-cylinder 224 is in intermittent electrical connection with the regulating circuit.
When regulating circuit switched on, the drive moves little jar 224 output, drives positive plate 221 and removes to the direction of keeping away from negative plate 222, and the clearance is cuted in the increase, along with cutting the clearance increase, the circuit reenters and cuts the state, and the circuit under this humidity state does not switch on, and the earial drainage takes place once more when follow-up pipeline 5, makes humidity further increase, and when the conductivity increased promptly, the circuit just can switch on again, is convenient for carry out the continuity and detects, improves detection efficiency.
As optimization, the upper end of the sealing seat 21 is provided with the adjusting electric cylinder 4, the adjusting electric cylinder 4 is tightly connected with the wall surface of the working cavity 111, and the output end of the adjusting electric cylinder 4 is in transmission connection with the sealing seat 21. The adjusting electric cylinder 4 is a main driving source of the sealing seat 21, when feeding is carried out, the pipeline 5 is connected in the guide groove 121 in a winding mode through the feeding mechanical arm, after the winding is completed, the adjusting electric cylinder 4 drives the sealing seat 21 to move downwards and the objective table 12 is matched to form a closed space, after the sealing performance detection of the pipeline 5 is completed, the adjusting electric cylinder 4 drives the sealing seat 21 to move upwards, separation is carried out, the pipeline 5 is taken out, and continuity detection is convenient to carry out.
The working principle of the invention is as follows: the pipeline 5 is supported by the objective table 12, so that the pipeline 5 is arranged along the guide groove 121, the pipeline 5 is assisted to bear force in the radial direction, and the pipeline 5 is prevented from being stretched and deformed due to overlarge tension applied to the pipeline 5 by a detection medium; the pipeline 5 is supported through the guide groove 121 with the gradually-changed screw diameter, so that the sealing performance of the longer pipeline 5 is conveniently detected, the axial length occupied by a detection space is reduced through spiral winding, the pipeline 5 is detected in a partition mode through the adjusting device 2, the defect part is positioned through partition detection, the positioning precision is improved, compensation is convenient, when detection is carried out, the objective table 12 and the sealing seat 21 are matched, the slide rail 212 and the guide groove 121 are matched to form a spiral guide groove, the pipeline 5 is partitioned through the substrate 231, step detection is carried out, and fine positioning of the defect part is facilitated through layer by layer; wet air flows are introduced into the pipeline 5, the pipeline 5 is expanded under the action of pressure, outward expansion type sealing detection is carried out, when outward opening type sealing defects occur, the wet air flows in the pipeline 5 are leaked from the defects, are guided through the air guide channel 2231 and enter the detection cavity 2312, and as the conductivity is increased, a circuit formed by the positive plate 221, the negative plate 222 and the power supply is conducted; the thickness of the sliding ring 24 is set as required, so that the local part of the pipeline 5 is in a non-contact state with the bottom of the guide groove 121, and through the generated gap, when the local part of the pipeline 5 has a defect, the pipeline 5 is prevented from being in surface contact with the wall surface of the guide groove 121 under the action of pressure, and surface sealing is caused under the action of pressure, so that detection leakage is caused; the pressing surface 2232 is used for pressing and connecting the local part of the pipeline 5, so that the local part of the pipeline 5 is deformed, a shape similar to a venturi tube is formed under the action of inclined surfaces on two sides, and as the pressure is increased, wet air flow is discharged from a defect part, and the instantaneous discharge rate is improved; when the regulating circuit switched on, the drive inching cylinder 224 output removed, drives positive plate 221 and removes to the direction of keeping away from negative plate 222, and the clearance is cuted in the increase, and along with cutting the clearance increase, the circuit reenters and cuts the state, and the circuit under this humidity state does not switch on, and when follow-up pipeline 5 takes place the earial drainage once more, makes humidity further increase, when the conductivity increases promptly, the circuit just can switch on again, is convenient for carry out the continuity and detects.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A leakproofness testing device for tubular medical instruments, the leakproofness testing device being in communication with a pipeline (5), characterized in that: the tightness testing device comprises a supporting device (1), an adjusting device (2) and a flow guide device (3), wherein the supporting device (1) is connected with the adjusting device (2), the adjusting device (2) is communicated with the flow guide device (3) through a pipeline, the flow guide device (3) is communicated with a pipeline (5), the supporting device (1) comprises a shell (11) and an object stage (12), a working cavity (111) is formed in the shell (11), the object stage (12) is arranged in the working cavity (111), a guide groove (121) is formed in the object stage (12), a clamping groove is formed in the upper end of the guide groove (121), the upper end of the pipeline (5) is clamped with the clamping groove, the adjusting device (2) comprises a sealing seat (21), a sealing cavity (211) is formed in the sealing seat (21), and the sealing cavity (211) faces the object stage (12);
the flow guide device (3) comprises a hot air pipe (31) and a wet air pipe (32), the wet air pipe (32) is communicated with a pipeline (5), the guide groove (121) is spirally arranged, the screw diameter of the guide groove (121) is gradually changed, the screw diameter of the guide groove (121) is gradually reduced from bottom to top, the pipeline (5) is spirally arranged along the guide groove (121), a slide way (212) is arranged along the wall surface of the sealing cavity (211), and the slide way (212) and the guide groove (121) are matched to form a spiral guide groove;
the adjusting device (2) further comprises a detection assembly (22) and a sliding piece (23), the sliding piece (23) is connected with a sliding way (212) in a sliding mode, the sliding piece (23) is in circumferential and spiral guide groove wall face sealing contact, the hot air pipe (31) faces the lower portion of the sliding piece (23), the detection assembly (22) is in transmission connection with the sliding piece (23), the detection assembly (22) comprises a positive plate (221), a negative plate (222) and a pressure head (223), the sliding piece (23) comprises a substrate (231), a detection cavity (2312) is formed in the substrate (231), the positive plate (221) and the negative plate (222) are arranged in the detection cavity (2312) in opposite directions, the positive plate (221) and the negative plate (222) are respectively and electrically connected with a power supply wiring terminal, a cut-off gap is formed between the positive plate (221) and the negative plate (222), the pressure head (223) is in transmission connection with the substrate (231), the inner side of the pressure head (223) is in compression connection with the pipeline (5), the pressure head (223) is provided with a gas guide channel (2231), the inner side of the gas guide channel (2231) faces towards the pipeline (5), and one end of the detection cavity (2312) faces the detection cavity (2312) is far away from the detection gap.
2. The device for testing sealability of tubular medical instruments according to claim 1, wherein: the sliding piece (23) further comprises a guide piece (232), the guide piece (232) is in sliding connection with the sliding rail (212), an epitaxial groove (2311) is formed in the substrate (231), one end of the guide piece (232) is inserted into the epitaxial groove (2311), the guide piece (232) is in sliding connection with the epitaxial groove (2311), a spring is arranged at the position, close to the bottom of the epitaxial groove (2311), of the guide piece (232), and the guide piece (232) is in compression connection with the substrate (231) through the spring.
3. The device for testing sealability of tubular medical instruments according to claim 2, wherein: the adjusting device (2) further comprises a sliding ring (24), the sliding ring (24) is in transmission connection with the substrate (231), one end of the pipeline (5) penetrates through the middle of the sliding ring (24), the sliding ring (24) is in sliding connection with the pipeline (5), and the inner side of the sliding ring (24) is in sliding contact with the guide groove (121).
4. The device for testing sealability of tubular medical instruments according to claim 3, wherein: the pressure head (223) is inboard to be equipped with and to compress tightly face (2232), it is equipped with the inclined plane to compress tightly face (2232) both sides, compresses tightly face (2232) for the plane, pressure head (223) is through inclined plane and compress tightly face (2232) and pipeline (5) crimping.
5. The device for testing sealability of tubular medical instruments according to claim 4, wherein: the inlet of the air guide channel (2231) is positioned at one side of the pressing surface (2232) close to the hot air pipe (31).
6. The device for testing sealability of tubular medical instruments according to claim 5, wherein: the detection assembly (22) further comprises a micro-motion cylinder (224), the micro-motion cylinder (224) is located in the detection cavity (2312), the micro-motion cylinder (224) is in transmission connection with the positive plate (221), the negative plate (222) and the power supply form a regulating circuit, and the micro-motion cylinder (224) is in intermittent electrical connection with the regulating circuit.
7. The device for testing sealability of tubular medical instruments according to claim 6, wherein: the adjusting electric cylinder (4) is arranged at the upper end of the sealing seat (21), the adjusting electric cylinder (4) is tightly connected with the wall surface of the working cavity (111), and the output end of the adjusting electric cylinder (4) is in transmission connection with the sealing seat (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211545802.1A CN115655589B (en) | 2022-12-05 | 2022-12-05 | Sealing performance testing device for tubular medical instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211545802.1A CN115655589B (en) | 2022-12-05 | 2022-12-05 | Sealing performance testing device for tubular medical instrument |
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| CN115655589B true CN115655589B (en) | 2023-03-14 |
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| DE10321991B3 (en) * | 2003-05-16 | 2004-05-19 | Bht Hygiene Technik Gmbh | Cleaning and disinfection equipment with flow connectors for medical tubing and catheters, includes flow restrictions and pressure sensors with memory |
| CN103063379B (en) * | 2012-12-17 | 2015-10-28 | 华中科技大学 | Air leakage detection device for infusion tube |
| CN103335889B (en) * | 2013-06-21 | 2015-10-07 | 山东康迪泰克工程橡胶有限公司 | High-pressure rubber pipe pressure test system |
| CN106872118A (en) * | 2017-04-13 | 2017-06-20 | 四川大学华西第二医院 | A kind of intellectual monitoring and automatically adjust device of the tracheal catheter to air flue air-tight state |
| CN108106794A (en) * | 2018-03-05 | 2018-06-01 | 湖南比扬医疗科技有限公司 | A kind of detection of infusion pump pipe breakage and alarm method and device |
| CN112595473A (en) * | 2020-12-25 | 2021-04-02 | 山东金飞智能检测设备有限公司 | Special detection device for testing tightness of medical trachea cannula body |
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