System and method for automatically testing dispensing performance of pipeline
By using pressure testing and injection components to monitor pipeline pressure in real time, the problem of time-consuming and labor-intensive pipeline blockage or leakage detection in existing technologies is solved, enabling rapid and accurate pipeline quality assessment and reducing testing costs and time.
Patent Information
- Application Number
- CN202511420671.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2025-12-26
AI Technical Summary
Existing technologies cannot simultaneously and efficiently detect whether there is blockage or leakage in pipelines. Moreover, the detection process is time-consuming and labor-intensive, disrupts the sterile environment of the pipelines and adds extra steps. It is also impossible to simultaneously determine whether the check valves of multiple adapters are faulty.
It employs pressure testing components, injection components, control components, and clamping components. By monitoring the pressure inside the pipeline in real time, it uses gas injection and pressure values to determine blockages or leaks. Combined with the control components, it automatically records and prompts the results, avoiding additional procedures and disruption of the sterile environment.
It enables rapid and accurate identification of pipeline blockages or leaks without the need for additional drying processes, reducing testing costs and time, and can simultaneously test the quality of check valves at multiple adapters.
Smart Images
Figure CN121207451A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of pipeline automation testing, and in particular to a system and method for automatically testing the dispensing performance of a pipeline. BACKGROUND
[0002] For some pipelines with multiple adapters, it is often necessary to connect at the adapter, such as using dispensing to fix the connection. For pipelines connected using dispensing, there are often defective products including blockage or leakage. Through automated pipeline pressure testing, completely blocked pipelines due to dispensing defects, partially blocked pipelines, and pipelines leaking due to dispensing defects, adapter defects, and one-way valve defects can be screened out.
[0003] In the prior art, there is currently no method for simultaneously detecting blockage and leakage in the same experiment to determine whether a pipeline is blocked or leaking. Typically, two separate processes are used.
[0004] There are currently two main methods for detecting whether a pipeline is completely blocked or partially blocked.
[0005] Method one: pass a certain pressure of gas through the front end of the pipeline, and place the rear end of the pipeline in pure water. Observe whether bubbles emerge from the rear end and the number of bubbles. This method can only qualitatively screen out severely blocked pipelines and cannot quantitatively screen out partially blocked pipelines.
[0006] Method two: pass a certain volume of pure water through the front end of the pipeline, and connect a weighing tool to the rear end of the pipeline. Observe whether water flows out of the rear end and the volume of water flow within a certain time. This method can quantitatively screen out partially blocked pipelines, but introduces pure water into the conduit, and a subsequent drying process is required. It is difficult to dry the interior of a thin and long pipeline.
[0007] There are currently two main methods for detecting whether a pipeline is leaking.
[0008] Method one: block the front and rear ends of the pipeline, connect a gas source to the front end, and place the pipeline in pure water. Apply pressure to the pipeline using the pressure gas source and observe whether bubbles are produced from the leakage point. This method requires an additional process to block the pipeline and an additional process to dry the exterior of the pipeline.
[0009] Method two: block the front and rear ends of the pipeline, and connect a pressure relief detection instrument with a pressure gas source to the front end. Apply pressure to the pipeline using the pressure gas source, then maintain the pressure for a certain period of time, and use the pressure relief detection device to determine whether there is a pressure leak. This method requires an additional process to block the pipeline and additional purchases of a gas source and a pressure relief detection instrument.
[0010] Moreover, for a pipeline with multiple adapters, when detecting whether there is a leak, the incoming material of multiple one-way valves connected on the pipeline cannot be detected at the same time, so it is impossible to determine whether the leak is caused by the one-way valve or the dispensing performance. The detection of the one-way valve in the prior art usually needs to be detected one by one before assembly. The methods for detecting the one-way valve mainly include:
[0011] Method one: using a certain pressure liquid to measure whether the one-way valve is conductive, which needs to increase a subsequent drying process.
[0012] Method two: using a certain pressure gas or liquid to test whether the one-way valve is cut off.
[0013] In summary, for the pipeline fixedly connected by dispensing, the prior art not only wastes time and effort, but also destroys the cleanliness of the pipeline, increases the risk of biological load, increases the humidity in the pipeline, increases the additional drying process, and causes resource waste. And multiple detection processes are needed to complete the judgment of blockage or leakage. SUMMARY
[0014] In order to solve at least one of the above technical problems in the prior art, the present application provides a system and method for automatically testing the dispensing performance of a pipeline.
[0015] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:
[0016] In a first aspect, the present application provides a system for automatically testing the dispensing performance of a pipeline, comprising:
[0017] A pressure test assembly for connecting a pipeline to be tested and monitoring the pressure in the pipeline to be tested in real time;
[0018] A push injection assembly for pushing gas to the pressure test assembly;
[0019] A control assembly for controlling the push injection parameters of the push injection assembly and reading the pressure value of the pressure test assembly.
[0020] Further, the system further comprises:
[0021] A clamping assembly for assembling the pressure test assembly and the pipeline to be tested.
[0022] Further, the system further comprises:
[0023] A prompt assembly, the control assembly judges whether the pipeline to be tested has blockage or leakage based on the pressure value monitored by the pressure test assembly, and controls the prompt assembly to give corresponding prompts.
[0024] Further, the pressure testing assembly comprises two three-way valves and a pressure gauge, the two three-way valves are connected, the connected three-way valves have four interfaces, one of which is connected to the push injection assembly, one of which is connected to the pressure gauge, one of which is connected to the atmosphere, and one of which is connected to the pipeline to be tested.
[0025] Further, the push injection assembly comprises a motor, a lead screw and a syringe, the output end of the motor is connected to the lead screw, a nut is arranged on the lead screw, and the nut is connected to the piston rod of the syringe.
[0026] Further, the push injection assembly further comprises a dust cover, and the push injection assembly is arranged in the dust cover.
[0027] Further, the clamping assembly comprises a mechanical arm and a sliding rail, and the mechanical arm is slidingly arranged on the sliding rail.
[0028] Further, the prompting assembly comprises a buzzer and / or a loudspeaker.
[0029] In a second aspect, the present application further provides a method for automatically testing the dispensing performance of a pipeline, which uses the automatic pipeline dispensing performance testing system described above, and the method comprises the following steps:
[0030] S1, setting test parameters;
[0031] S2, assembling the automatic pipeline dispensing performance testing system;
[0032] S3, calibrating the zero value of the pressure gauge, using the push injection assembly to inject gas into the pipeline to be tested, and reading the pressure value monitored by the pressure gauge;
[0033] S4, judging whether the pipeline to be tested is blocked or leaked based on the pressure value monitored by the pressure gauge.
[0034] Further, the zero value of the pressure gauge is calibrated, and the specific method is as follows: before injecting the gas, the connection end of the three-way valve with the atmosphere is opened, so that the pressure gauge, the pipeline to be tested and the push injection assembly are all connected with the atmosphere, and after waiting for a set time, the display value of the pressure gauge is set to zero; then the connection end of the three-way valve with the atmosphere is closed.
[0035] Further, the test parameters include the push injection speed of the motor, the push injection distance, the back-off speed, the back-off distance, the standard pressure range and the monitoring frequency of the pressure gauge.
[0036] Further, the specific method for judging whether the pipeline to be tested is blocked or leaked comprises:
[0037] All the monitored pressure values are obtained, the pressure values within time t1 after the test starts and the pressure values within time t2 before the test ends are deleted from all the pressure values, the maximum value and the minimum value in the middle part of the pressure values are taken.
[0038] If the minimum value is less than the lower limit of the standard pressure range, it indicates that the pipeline to be tested has a leak;
[0039] If the maximum value is greater than the upper limit of the standard pressure range, it indicates that the pipeline to be tested is blocked.
[0040] Compared with the prior art, the present application has the following beneficial effects:
[0041] The present application uses gas to determine whether the pipeline is blocked or leaked, without damaging the sterile environment of the pipeline, and without the need for subsequent drying processes, thereby reducing testing costs and testing time.
[0042] In addition, the present application can determine whether the pipeline is blocked or leaked by the size of the pressure value, without the need for setting two processes, thereby further saving testing time and testing costs.
[0043] The present application also calibrates the pressure gauge to zero before testing, thereby reducing testing errors and improving testing accuracy; the size of the pressure value can also be used to determine the degree of pipeline blockage, or to preliminarily determine the position and degree of pipeline leakage, thereby realizing quantitative evaluation of whether the pipeline exceeds the qualified range.
[0044] The present application uses the control assembly to automatically perform testing, and automatically records data and abnormal prompts, thereby reducing the tedious testing work of production personnel. DETAILED DESCRIPTION
[0045] Figure 1 The system block diagram of the first embodiment of the present application.
[0046] Figure 2 The top view of the push injection assembly and the pressure testing assembly in the first embodiment of the present application.
[0047] Figure 3 The isometric view of the push injection assembly and the pressure testing assembly in the first embodiment of the present application.
[0048] Figure 4 The method flowchart of the second embodiment of the present application.
[0049] BRIEF DESCRIPTION OF THE DRAWINGS
[0050] 1. Three-way valve, 2. Pressure gauge, 3. Pipeline to be tested, 4. Motor, 5. Syringe, 6. Dust cover, 7. Mechanical arm, 8. Slide rail, 9. Prompting assembly. DETAILED DESCRIPTION
[0051] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are not all the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.
[0052] It should be understood that the relative arrangement of components and steps, numerical expressions set forth in these embodiments should not be construed as limiting the scope of the present application, unless otherwise specifically stated.
[0053] The following description of the example embodiments is merely illustrative in nature and is in no way intended to limit the scope of the application or its application or uses. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered part of the specification if applicable.
[0054] Embodiment one
[0055] The present embodiment provides a system for automatically testing the dispensing performance of a pipeline, as shown in Figure 1 The system comprises:
[0056] A pressure testing assembly for connecting the pipeline to be tested and monitoring the pressure in the pipeline to be tested in real time;
[0057] A bolus assembly for bolus injection of gas to the pressure testing assembly;
[0058] A control assembly for controlling the bolus injection parameters of the bolus assembly and reading the pressure value of the pressure testing assembly;
[0059] A clamping assembly for assembling the pressure testing assembly and the pipeline to be tested;
[0060] A prompt assembly, the control assembly judges whether the pipeline to be tested is blocked or leaked based on the pressure value monitored by the pressure testing assembly, and controls the prompt assembly to give corresponding prompts.
[0061] In other embodiments, the clamping assembly can be removed, and the pressure testing assembly and the pipeline to be tested can be assembled manually. The pipeline to be tested can be placed uniformly on the pipeline rack, and the pipeline rack can be divided into a testing area, a blocking area, a leakage area and a qualified area to avoid confusion between pipelines of different qualities.
[0062] In other embodiments, the prompt assembly can be removed, and the pressure value can be recorded manually according to the pressure value. Then, other software is used to determine whether the pipeline to be tested is qualified, blocked or leaked.
[0063] The pipeline tested by the present application is a pipeline with multiple dispensing positions, as shown in Figure 1As shown, the pipe has 7 adapters, and thus has 7 dispensing positions, so it is easy to cause quality problems due to dispensing problems. Of course, the application can also be applied to the performance test of a pipe having 1, 2, 3 or other number of adapters.
[0064] As shown in Figure 2 and 3 , the pressure test assembly includes two three-way valves and a pressure gauge, the two three-way valves are connected, the connected three-way valves have four interfaces, one of which is connected to the push injection assembly, one of which is connected to the pressure gauge, one of which is connected to the atmosphere, and one of which is connected to the pipe to be tested.
[0065] The push injection assembly includes a motor, a lead screw and a syringe, the output end of the motor is connected to the lead screw, a nut is arranged on the lead screw, and the nut is connected to the piston rod of the syringe. The lower part of the push injection assembly is a control box, and a control assembly is arranged in the control box, which includes a single-chip microcomputer and the like. A prompt assembly is arranged above the control box, which can include a buzzer or a loudspeaker, and can also include both a buzzer and a loudspeaker.
[0066] In order to prevent dust generated by wear of the push injection assembly from polluting the clean workshop, the push injection assembly further includes a dust cover, and the push injection assembly is arranged in the dust cover.
[0067] The motor provides power to the syringe, and the control assembly can control the push injection speed of the motor. The rotation of the motor drives the rotation of the lead screw, the linear movement of the nut, and the linear movement of the piston rod following the nut, thereby realizing push injection or retraction.
[0068] Referring again to Figure 1 , the clamping assembly includes a mechanical arm and a slide rail, and the mechanical arm is slidably arranged on the slide rail. The mechanical arm can be grabbed and rotated to place the front end of the pipe to be tested into the rear end of the three-way valve, and rotate the front end of the pipe to be tested to be screwed with the luer adapter of the three-way valve. Then adjust the tightness of clamping the pipe, and put the pipe into the positioning slot one by one. And take away the measured pipe after the test is completed.
[0069] Embodiment two
[0070] The embodiment provides a method for automatically testing the dispensing performance of a pipe, using the system for automatically testing the dispensing performance of a pipe provided in embodiment one, as shown in Figure 4 , the method comprises the following steps:
[0071] S1, setting test parameters; the test parameters include motor push injection speed, push injection distance, retraction speed, retraction distance, standard pressure range and monitoring frequency of the pressure gauge.
[0072] S2, assemble the system for testing the dispensing performance of the automated test pipeline;
[0073] S3, calibrate the pressure gauge to zero, use the push component to push gas into the pipeline to be tested, and read the pressure value monitored by the pressure gauge;
[0074] The specific method for calibrating the pressure gauge to zero is: before pushing the gas, open the connection end of the three-way valve to the atmosphere, so that the pressure gauge, the pipeline to be tested, and the push component are all connected to the atmosphere, and wait for a set time, then set the pressure gauge display value to zero; then close the connection end of the three-way valve to the atmosphere. The set waiting time is set according to the requirements, for example, it can be 2s or 3s.
[0075] Then push and monitor the pressure, and at the same time in the process of pushing, the one-way valve connected in the pipeline to be tested is not blocked in either direction. Read the pressure value according to the set frequency, and the set frequency is set according to the requirements, for example, it can be read once every 0.2s.
[0076] S4, based on the pressure value monitored by the pressure gauge, determine whether the pipeline to be tested is blocked or leaked. The specific method includes:
[0077] Get all the monitored pressure values, delete the pressure values within time t1 after the test starts, delete the pressure values within time t2 before the test ends, and take the maximum and minimum values of the pressure values in the middle part;
[0078] If the minimum value is less than the lower limit of the standard pressure range, that is, there is at least one pressure value in the middle part of the pressure values that is lower than the lower limit, it indicates that the pipeline to be tested has a leak;
[0079] If the maximum value is greater than the upper limit of the standard pressure range, that is, there is at least one pressure value in the middle part of the pressure values that is higher than the upper limit, it indicates that the pipeline to be tested is blocked.
[0080] Otherwise, the left and right pressure values in the middle part are within the standard pressure range, indicating that the pipeline to be tested is qualified.
[0081] In addition, the degree of pipeline blockage or leakage can also be represented according to the size of the pressure value. Generally, when the minimum value is lower than the lower limit, the smaller the value, the more likely it is that the one-way valve connected in the pipeline to be tested is not qualified; the larger the value, the more likely it is that the pipeline to be tested itself has a leak.
[0082] When the maximum value is higher than the upper limit, the larger the value, the more serious the blockage.
[0083] Wherein, the time t1 and t2 are usually 2s, which can also be adjusted according to the actual situation.
[0084] An example of a method for testing the dispensing performance of an automated test pipeline:
[0085] Hardware device setup: the hardware system should contain a single-chip microcomputer for control, a mechanical hand for disassembling and assembling the pipeline, a slide rail, a motor and a screw rod for pushing, a pressure gauge for pressure testing, and a matching syringe, a three-way valve, and a protective cover. Select a partially blocked pipeline to test whether the abnormality can be detected and prompted.
[0086] A1, set the test parameters; connect the single-chip microcomputer through the computer, set the pushing speed to 5 mm / s and the back-off speed to 20 mm / s; the pushing and back-off distances are both 60 mm; the lower limit of the pressure control threshold is 40 mmHg and the upper limit is 35 mmHg.
[0087] A2, assemble the pipeline, use the mechanical arm to grab the pipeline, place the front end of the pipeline at the rear end of the three-way valve; rotate the front end of the pipeline to tighten it with the luer connector of the three-way valve. Adjust the tightness of the clamping of the pipeline, and straighten the pipeline and put it into the positioning slot one by one. Open the connection end of the three-way valve to the atmosphere, so that the pressure gauge, the pipeline, and the syringe are in communication with the atmosphere, and wait for 2 s.
[0088] A3, measure the air pressure; set the pressure gauge to zero and close the connection end of the three-way valve to the atmosphere. Push the piston rod of the syringe through the motor at a speed of 5 mm / s until the distance of 60 mm is pushed. During the pushing process, record a pressure value every 0.2 s.
[0089] A4, disassemble the pipeline; rotate the front end of the pipeline to loosen it with the luer connector of the three-way valve. Take out the pipeline from the positioning slot.
[0090] A5, prompt; remove the pressure values of the first 2 s and the last 2 s, and take the pressure values in the middle time period. Select the maximum value and the minimum value as 45 mmHg and 48 mmHg, respectively, both of which exceed the upper limit of the range. Drive the horn to issue a blockage prompt.
[0091] A6, pipeline arrangement; use the mechanical arm to arrange the pipeline to the blocked pipeline area.
[0092] The above specific embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the scope of the technical solutions of the present application, which should be covered by the scope of the claims of the present application.
Claims
1. A system for automated testing of dispensing performance of a tubing point, characterized by, The system comprises: a pressure testing assembly for connecting a pipeline to be tested and monitoring the pressure in the pipeline to be tested in real time; a bolus injection assembly for bolus injection of gas to the pressure testing assembly; a control assembly for controlling the bolus injection parameters of the bolus injection assembly and reading the pressure value of the pressure testing assembly.
2. The system of claim 1, wherein, The system further comprises: a clamping assembly for assembling the pressure testing assembly and the pipeline to be tested; a prompt assembly, and the control assembly judges whether the pipeline to be tested is blocked or leaked based on the pressure value monitored by the pressure testing assembly and controls the prompt assembly to give a corresponding prompt.
3. The system of claim 1, wherein, The pressure testing assembly comprises two three-way valves and a pressure gauge, the two three-way valves are connected in communication, the three-way valves in communication have four interfaces, one of which is connected to the bolus injection assembly, one of which is connected to the pressure gauge, one of which is connected to the atmosphere, and one of which is connected to the pipeline to be tested.
4. The system of claim 1, wherein, The bolus injection assembly comprises a motor, a lead screw and a syringe, the output end of the motor is connected to the lead screw, a nut is arranged on the lead screw, and the nut is connected to the piston rod of the syringe.
5. The system of claim 4, wherein, The bolus injection assembly further comprises a dust cover, and the bolus injection assembly is arranged in the dust cover.
6. The system of claim 2, wherein, The clamping assembly comprises a mechanical arm and a slide rail, and the mechanical arm is slidingly arranged on the slide rail.
7. A method of automatically testing dispensing performance of a tubing line, using the system for automatically testing dispensing performance of a tubing line according to any one of claims 1 to 6, characterized in that, The method comprises: S1, setting test parameters; S2, assembling the system for testing the dispensing performance of the pipeline; S3, calibrating the zero value of the pressure gauge, using the bolus injection assembly to inject gas into the pipeline to be tested, and reading the pressure value monitored by the pressure gauge; S4, judging whether the pipeline to be tested is blocked or leaked based on the pressure value monitored by the pressure gauge.
8. The method of claim 7, wherein, The specific method for calibrating the zero value of the pressure gauge is as follows: before the bolus injection of gas, the connection end of the three-way valve to the atmosphere is opened, so that the pressure gauge, the pipeline to be tested and the bolus injection assembly are all in communication with the atmosphere, and after waiting for a set time, the display value of the pressure gauge is set to zero; then the connection end of the three-way valve to the atmosphere is closed.
9. The method of claim 7, wherein, The test parameters include the bolus injection speed, bolus injection distance, back-off speed, back-off distance, standard pressure range and monitoring frequency of the pressure gauge.
10. The method of claim 7, wherein, The specific method for judging whether the pipeline to be tested is blocked or leaked comprises: obtaining all the monitored pressure values, deleting the pressure values within time t1 after the start of the test from all the pressure values, deleting the pressure values within time t2 before the end of the test, and taking the maximum value and the minimum value in the middle part of the pressure values; if the minimum value is less than the lower limit of the standard pressure range, it indicates that the pipeline to be tested has a leak; if the maximum value is greater than the upper limit of the standard pressure range, it indicates that the pipeline to be tested is blocked.