High-pressure injector limit test system and method and storage medium

Abstract

The invention discloses a high-pressure injector limit testing system and method and a storage medium, relates to the technical field of high-pressure injector testing, and solves the problem that a current high-pressure injector limit testing method focuses on single performance testing and neglects comprehensive evaluation on a high-pressure injector. Comprising an air tightness test module, a fluid analysis module and a pressure test module, the air tightness test module is used for testing the air tightness of the high-pressure injector, an abnormal air tightness signal or a normal air tightness signal is generated in the test, and the fluid analysis module is used for analyzing the flow velocity conditions of test fluid of the high-pressure injector under different pressures. The pressure test module is used for analyzing and generating a flow velocity abnormal signal, a pressure drop normal signal or a pressure drop abnormal signal, the pressure test module is used for carrying out pressure test on an injector barrel of the high-pressure injector and generating a product abnormal signal or a product qualified signal, and limit test and comprehensive test of the high-pressure injector are realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-pressure injector testing, and in particular relates to a high-pressure injector limit testing system, method and storage medium. Background Art

[0002] A high-pressure syringe is a device used to inject or deliver liquids or gases. It is able to work stably under high pressure and is commonly used in medical, industrial or laboratory fields. It provides continuous, high-precision pressure through a mechanical or electrical drive system, allowing the fluid to be injected into the target area at a controlled rate and pressure. High-pressure syringes are commonly used in medical applications such as CT scanning angiography, angiography, and drug injection. They are also widely used in scenarios such as laboratory research, high-pressure reactions, and chemical analysis. Its design emphasizes high pressure resistance, sealing, and flow accuracy to ensure safety and reliability under extreme conditions.

[0003] In the prior art, the limit test methods of high-pressure injectors often focus on single performance tests, ignoring the comprehensive evaluation of high-pressure injectors. In addition, the existing test methods for high-pressure injectors rely on manual detection or simple mechanical pressurization, which makes it difficult to accurately control pressure changes and fail to detect potential defects and risks in a timely manner. To this end, the present invention provides a high-pressure injector limit testing system, method and storage medium. Summary of the invention

[0004] The purpose of the present invention is to provide a high-pressure injector limit test system, method and storage medium to solve the problems raised in the above background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A high-pressure syringe limit test system comprises a user terminal, a data acquisition module, an airtight test module, a fluid analysis module, a pressure test module, a display terminal, a control center and a database module; the user terminal is used to input the model of the high-pressure syringe and the number of the test fluid and send them to the database module; the database module is used to send the standard injection data of the corresponding high-pressure syringe to the airtight test module according to the model, send the product standard data of the corresponding high-pressure syringe to the pressure test module and the fluid analysis module according to the model, and send the fluid data of the corresponding test fluid to the fluid analysis module according to the number; the airtight test module is used to test the airtightness of the high-pressure syringe, and the test generates an airtight abnormality signal or an airtight normal signal and sends it to the control center. If an airtight abnormality signal is generated, it is sent to the display terminal; if a airtight normal signal is generated, a fluid analysis instruction is sent to the fluid analysis module; The data acquisition module is used to collect the real-time fluid flow rate of the test fluid in the high-pressure syringe when it is injected at different pressures and send it to the fluid analysis module; the fluid analysis module is used to analyze the flow rate of the test fluid of the high-pressure syringe at different pressures, and the analysis generates an abnormal flow rate signal, a normal pressure drop signal or an abnormal pressure drop signal and sends it to the control center; if an abnormal flow rate signal or an abnormal pressure drop signal is generated, it is sent to the display terminal; if a normal pressure drop signal is generated, a cylinder pressure test instruction is sent to the pressure test module; The data acquisition module is also used to collect the surface image of the barrel of the high-pressure syringe and send it to the pressure testing module; the pressure testing module is used to perform pressure testing on the syringe barrel of the high-pressure syringe, generate a product abnormality signal or a product qualified signal and send it to the control center, the control center sends the product abnormality signal or the product qualified signal to the display terminal, and the display terminal is used to display the signal corresponding to the high-pressure syringe.

[0006] Furthermore, the standard injection data includes maximum injection pressure and standard injection pressure of high-pressure injectors of different models.

[0007] Furthermore, the testing process of the airtight test module includes: Obtain the standard inert gas content in the air under a standard environment, sink the high-pressure syringe into a transparent water tank, then inject the inert gas into the high-pressure syringe, and adjust the injection pressure to the standard injection pressure of the high-pressure syringe; The real-time inert gas content on the surface of the transparent water tank is collected. If the real-time inert gas content is greater than the standard inert gas content, the airtightness test result of the high-pressure injector is determined to be abnormal, and an airtightness abnormality signal is generated. If the real-time inert gas content is less than or equal to the standard inert gas content, proceed to the next step.

[0008] Furthermore, the test process of the airtight test module also includes: The standard injection pressure is gradually increased by a fixed percentage until the maximum injection pressure of the high-pressure injector is reached and the test is stopped; When there are no bubbles in the transparent water tank of the high-pressure injector at all test injection pressures, an airtight normal signal is generated; When there are bubbles in the transparent water tank at any test injection pressure of the high-pressure injector, the real-time inert gas content on the surface of the transparent water tank is collected. If the real-time inert gas content on the surface of the transparent water tank is greater than the standard inert gas content, an abnormal airtightness signal is generated; if the real-time inert gas content on the surface of the transparent water tank is less than or equal to the standard inert gas content, a normal airtightness signal is generated.

[0009] Furthermore, the product standard data are the barrel length, barrel inner radius, barrel flow value, barrel outer radius and barrel wall thickness of high-pressure syringes of different models, and the maximum tensile strength of the corresponding barrel of the high-pressure syringe; The fluid data are the fluid viscosity and fluid density of the test fluids with different numbers when the high-pressure injector performs the fluid test.

[0010] Furthermore, the analysis process of the fluid analysis module includes: Injecting a test fluid into the high-pressure injector, and then adjusting the injection pressure of the high-pressure injector to the test injection pressure; Obtaining the fluid density corresponding to the test fluid and the standard atmospheric pressure of the standard environment during the test, and calculating the initial standard fluid flow rate of the test fluid; Then, the real-time fluid flow rate of the test fluid is obtained, and the real-time fluid flow rate is compared with the initial standard fluid flow rate; If the real-time fluid flow rate of the test fluid is equal to the initial standard fluid flow rate, the test is continued; if the initial fluid flow rate of the test fluid is not equal to the initial standard fluid flow rate, the test is stopped and a flow rate abnormality signal is generated; The test injection pressure is increased upward by a fixed percentage of the standard injection pressure, and the above steps are repeated to obtain the real-time fluid flow rate corresponding to the test fluid at the next test injection pressure, and so on, until the test injection pressure reaches the maximum injection pressure of the high-pressure injector, and the real-time fluid flow rate corresponding to the test fluid when the test injection pressure is the maximum injection pressure is obtained; If the real-time fluid flow rate of the test fluid corresponding to any test injection pressure is not equal to the standard fluid flow rate corresponding to the test injection pressure, a flow rate abnormality signal is generated and the test of the high-pressure injector is stopped; If the real-time fluid flow rate of the test fluid corresponding to each test injection pressure is equal to the standard fluid flow rate corresponding to the test injection pressure, proceed to the next step.

[0011] Furthermore, the analysis process of the fluid analysis module also includes: Obtain the barrel length and inner radius of the high-pressure injector, the fluid viscosity and barrel flow value corresponding to the test fluid used in the test, and calculate the pressure drop value of the high-pressure injector; If the pressure drop value of the high-pressure injector belongs to the pressure drop value interval, a normal pressure drop signal is generated; If the pressure drop value of the high-pressure injector does not belong to the pressure drop value range, a pressure drop abnormality signal is generated and the test of the high-pressure injector is stopped.

[0012] Furthermore, the testing process of the stress testing module includes: Obtain the outer radius of the barrel of the high-pressure syringe, the barrel wall thickness and the maximum tensile strength of the syringe barrel, and calculate the barrel rupture pressure of the high-pressure syringe; Injecting a test fluid into the high-pressure injector, and setting the injection pressure of the high-pressure injector to a test injection pressure, and setting a real-time detection duration corresponding to the test injection pressure; wherein the test injection pressure is inversely proportional to the real-time detection duration; When the injection pressure of the high-pressure injector increases to the test injection pressure, stop increasing the injection pressure.

[0013] Furthermore, the testing process of the stress testing module also includes: Real-time detection of the cylinder surface image of the high-pressure injector; If there are cracks on the barrel surface image, the current test injection pressure is compared with the barrel rupture pressure. When the test injection pressure of the high-pressure injector is less than the barrel rupture pressure, the barrel pressure test of the high-pressure injector is judged to be unqualified, and a product abnormality signal is generated. When the test injection pressure of the high-pressure injector is greater than or equal to the barrel rupture pressure, the barrel pressure test of the high-pressure injector is judged to be qualified, and a product qualified signal is generated. If there are no cracks in the cylinder surface image, repeat the above test steps until the test injection pressure of the high-pressure injector reaches the upper limit of the test injection pressure and stop the test.

[0014] Furthermore, the detection process of real-time detection of the cylinder surface image of the high-pressure injector is specifically as follows: Convert the surface image of the cylinder of the high-pressure injector into a grayscale image, and calculate the average grayscale value of the grayscale image; If the gray value of any pixel is greater than the average gray value of the gray image, the corresponding pixel is set to white; if the gray value of any pixel is less than or equal to the average gray value of the gray image, the corresponding pixel is set to black, thereby obtaining a binary image of the cylinder surface image; Perform edge detection on the binary image to obtain the suspected crack area of ​​the cylinder surface image; If the aspect ratio of the suspected crack region is greater than or equal to the aspect ratio threshold, or the area of ​​the suspected crack region is greater than or equal to the area threshold, the suspected crack region is determined to be a cylinder surface crack; If the aspect ratio of the suspected crack region is less than the aspect ratio threshold, and the area of ​​the suspected crack region is less than the area threshold, no operation is performed.

[0015] In a second aspect, a high-pressure syringe limit test method is provided, the method comprising: Step S10, inputting the model of the high-pressure injector and the serial number of the test fluid, obtaining the standard injection data and product standard data of the corresponding high-pressure injector according to the model, and obtaining the fluid data of the corresponding test fluid according to the serial number; Step S20, testing the air tightness of the high-pressure injector, and generating an abnormal air tightness signal or a normal air tightness signal; Step S30, if a normal airtight signal is generated, real-time fluid flow rates of the test fluid in the high-pressure injector when injected at different pressures are collected, and the flow rates of the test fluid in the high-pressure injector at different pressures are analyzed to generate an abnormal flow rate signal, a normal pressure drop signal, or an abnormal pressure drop signal; Step S40: if a normal pressure drop signal is generated, the surface image of the cylinder of the high-pressure injector is collected, and a pressure test is performed on the syringe cylinder of the high-pressure injector to generate a product abnormality signal or a product qualified signal.

[0016] In a third aspect, a computer-readable storage medium stores a computer program, which implements a high-pressure injector limit testing method when executed by a processor.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention inputs the model of the high-pressure injector and the serial number of the test fluid, obtains the standard injection data and product standard data corresponding to the high-pressure injector according to the model, and obtains the fluid data of the corresponding test fluid according to the serial number. First, the air tightness of the high-pressure injector is tested, and the test generates an abnormal air tightness signal or a normal air tightness signal, thereby realizing the detection of the air tightness of the high-pressure injector; 2. Under the premise that there is no abnormality in the air tightness of the high-pressure injector, the present invention further collects the real-time fluid flow rate of the test fluid in the high-pressure injector when injected at different pressures, and analyzes the flow rate of the test fluid in the high-pressure injector at different pressures, and generates an abnormal flow rate signal, a normal pressure drop signal or an abnormal pressure drop signal through analysis. When a normal pressure drop signal is generated, the surface image of the barrel of the high-pressure injector is further collected, and finally a pressure test is performed on the syringe barrel of the high-pressure injector to generate a product abnormality signal or a product qualified signal. The present invention realizes extreme testing and comprehensive testing of the high-pressure injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 is the overall system block diagram of the present invention; Figure 2 It is a test flow chart of the high pressure injector test in the present invention; Figure 3 is a flow chart of the method of the present invention; Figure 4 It is a schematic diagram of the structure of the computing device in the present invention. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 and Figure 2 As shown, the technical solution provided by the present invention is: a high-pressure syringe limit test system, including a user terminal, a data acquisition module, an airtight test module, a fluid analysis module, a pressure test module, a display terminal, a control center and a database module, wherein the database module is respectively connected to the airtight test module, the fluid analysis module and the pressure test module; In this embodiment, the user terminal is used to input the model of the high-pressure injector and the number of the test fluid, and send the model of the high-pressure injector and the number of the test fluid to the database module; the database module is used to store standard injection data of high-pressure injectors of different models, and the database module is used to send the standard injection data of the corresponding high-pressure injector to the airtight test module according to the model; wherein the standard injection data includes the maximum injection pressure and standard injection pressure of high-pressure injectors of different models.

[0022] In this embodiment, the airtightness test module is used to test the airtightness of the high-pressure injector, and the test process is as follows: Obtain the standard inert gas content in the air under standard environment; Submerge the high-pressure syringe into a transparent water tank, then inject inert gas into the high-pressure syringe, and adjust the injection pressure to the standard injection pressure of the high-pressure syringe; It should be specifically noted that the inert gas injected into the high-pressure injector during the air-tightness test can be nitrogen or argon, etc. The inert gas has chemical stability, low reactivity and safety under standard conditions, and can avoid the gas explosion caused by the pressure generated during the air-tightness test of the high-pressure injector; Collect the real-time inert gas content on the surface of the transparent water tank; If the real-time inert gas content is greater than the standard inert gas content, the airtightness test result of the high-pressure injector is determined to be abnormal, and an airtightness abnormality signal is generated. If the real-time inert gas content is less than or equal to the standard inert gas content, the next step is entered; The standard injection pressure is gradually increased by a fixed percentage until the maximum injection pressure of the high-pressure injector is reached and the test is stopped; When there are no bubbles in the transparent water tank at all the test injection pressures of the high-pressure injector, the air tightness test result of the high-pressure injector is judged to be normal, and an air tightness normal signal is generated at the same time; When bubbles exist in the transparent water tank at any test injection pressure of the high-pressure injector, the real-time inert gas content on the surface of the transparent water tank is collected. If the real-time inert gas content on the surface of the transparent water tank is greater than the standard inert gas content, the airtightness test result of the high-pressure injector is determined to be abnormal, and an airtightness abnormality signal is generated; if the real-time inert gas content on the surface of the transparent water tank is less than or equal to the standard inert gas content, the airtightness test result of the high-pressure injector is determined to be normal, and an airtightness normal signal is generated; The airtight test module sends the airtight abnormal signal or the airtight normal signal of the high-pressure injector to the control center. If the control center receives the airtight abnormal signal of the high-pressure injector, it sends the airtight abnormal signal of the high-pressure injector to the display terminal; if the control center receives the airtight normal signal of the high-pressure injector, it sends a fluid analysis instruction to the fluid analysis module.

[0023] Furthermore, the data acquisition module is used to collect the real-time fluid flow rate of the test fluid in the high-pressure syringe when it is injected under different pressures, and send the real-time fluid flow rate of the test fluid in the high-pressure syringe to the fluid analysis module; the database module is also used to store product standard data of high-pressure syringes of different models and fluid data of test fluids of different numbers, and the database module is used to send the product standard data of the corresponding high-pressure syringe to the pressure test module and the fluid analysis module according to the model, and the database module is used to send the fluid data of the corresponding test fluid to the fluid analysis module according to the number; It should be specifically noted that the test fluid for the high-pressure syringe test can be pure water, saline or alcohol, etc. In the present embodiment, pure water is preferred as the test fluid for the high-pressure syringe test; the product standard data include the barrel length, inner radius of the barrel, barrel flow value, outer radius of the barrel and barrel wall thickness of high-pressure syringes of different models, and the maximum tensile strength of the corresponding barrel of the high-pressure syringe; the fluid data include the fluid viscosity and fluid density of the test fluids with different numbers when the high-pressure syringe is subjected to fluid testing.

[0024] In this embodiment, the fluid analysis module is used to analyze the flow rate of the test fluid of the high-pressure injector under different pressures, and the analysis process is as follows: Inject the test fluid into the high-pressure injector, and then adjust the injection pressure of the high-pressure injector to the test injection pressure DYBi, where i is the test number, i=1, 2, ..., n, and n is a positive integer; Obtain the fluid density LTM corresponding to the test fluid and the standard atmospheric pressure DQY of the standard environment during the test, and calculate the initial standard fluid flow rate LTLi of the test fluid through the formula. The specific formula is as follows: ; It should be specifically noted that when the injection pressure of the high-pressure injector is the test injection pressure, the test injection pressure is greater than the atmospheric pressure; Then, the real-time fluid flow rate of the test fluid is obtained, and the real-time fluid flow rate is compared with the initial standard fluid flow rate; If the real-time fluid flow rate of the test fluid is equal to the initial standard fluid flow rate, the fluid flow rate of the high-pressure injector at the test injection pressure is determined to be normal and the test is continued; if the initial fluid flow rate of the test fluid is not equal to the initial standard fluid flow rate, the fluid flow rate of the high-pressure injector at the test injection pressure is determined to be abnormal and the test is stopped, and a flow rate abnormality signal is generated at the same time; The test injection pressure is increased upward by a fixed percentage of the standard injection pressure, and the above steps are repeated to obtain the real-time fluid flow rate corresponding to the test fluid at the next test injection pressure, and so on, until the test injection pressure reaches the maximum injection pressure of the high-pressure injector, and the real-time fluid flow rate corresponding to the test fluid when the test injection pressure is the maximum injection pressure is obtained; Exemplarily, the test injection pressure is 50% of the standard injection pressure, and is increased upward by 5% of the standard injection pressure of the high-pressure injector until the maximum injection pressure of the high-pressure injector is reached; If the real-time fluid flow rate of the test fluid corresponding to each test injection pressure is equal to the standard fluid flow rate corresponding to the test injection pressure, proceed to the next step; If the real-time fluid flow rate of the test fluid corresponding to any test injection pressure is not equal to the standard fluid flow rate corresponding to the test injection pressure, the fluid flow rate of the high-pressure injector is determined to be abnormal, and a flow rate abnormality signal is generated, and the test of the high-pressure injector is stopped; Obtain the barrel length TTC, the inner radius NBJ of the barrel of the high-pressure injector, the fluid viscosity LTN and the barrel flow value LTT corresponding to the test fluid used in the test; By formula The pressure drop value YJZ of the high-pressure injector is calculated; It should be specifically stated that the pressure drop value is used to reflect the resistance encountered by the fluid when it flows in the high-pressure injector. When the fluid passes through the barrel and pipeline of the high-pressure injector, the resistance generated by the fluid is proportional to the barrel flow value; If the pressure drop value of the high-pressure injector belongs to the pressure drop value interval, the pressure drop value of the high-pressure injector is determined to be a normal pressure drop value, and a normal pressure drop signal is generated; If the pressure drop value of the high-pressure injector does not belong to the pressure drop value interval, the pressure drop value of the high-pressure injector is determined to be an abnormal pressure drop value, and the test of the high-pressure injector is stopped at the same time, and a pressure drop abnormality signal is generated; The fluid analysis module sends the abnormal flow rate signal, normal pressure drop signal or abnormal pressure drop signal to the control center. If the control center receives the abnormal flow rate signal or the abnormal pressure drop signal, it sends the abnormal flow rate signal or the abnormal pressure drop signal of the high-pressure injector to the display terminal; if the control center receives the normal pressure drop signal, it sends the cylinder pressure test instruction to the pressure test module.

[0025] In this embodiment, the data acquisition module is also used to collect the surface image of the cylinder of the high-pressure syringe and send the surface image of the cylinder of the high-pressure syringe to the pressure testing module; the pressure testing module is used to perform a pressure test on the syringe cylinder of the high-pressure syringe. The specific test process is as follows: Obtain the outer radius WBJ of the high-pressure syringe, the thickness BHD of the syringe wall, and the maximum tensile strength KLQ of the syringe barrel, and calculate the barrel bursting pressure PLY of the high-pressure syringe by the formula. The specific formula is as follows: ; Wherein, the barrel bursting pressure of the high-pressure injector is greater than the upper limit value of the test injection pressure of the high-pressure injector; Injecting a test fluid into the high-pressure injector, and setting the injection pressure of the high-pressure injector to a test injection pressure, and setting a real-time detection duration corresponding to the test injection pressure; wherein the test injection pressure is inversely proportional to the real-time detection duration; When the injection pressure of the high-pressure injector increases to the test injection pressure, the injection pressure is stopped from being increased, and the surface image of the barrel of the high-pressure injector is detected in real time; If there are cracks on the barrel surface image, the current test injection pressure is compared with the barrel rupture pressure. When the test injection pressure of the high-pressure injector is less than the barrel rupture pressure, the barrel pressure test of the high-pressure injector is judged to be unqualified, and a product abnormality signal is generated. When the test injection pressure of the high-pressure injector is greater than or equal to the barrel rupture pressure, the barrel pressure test of the high-pressure injector is judged to be qualified, and a product qualified signal is generated. If there are no cracks in the cylinder surface image, proceed to the next step; Exemplarily, when the injection pressure of the high-pressure injector increases by 35% of the barrel rupture pressure, the injection pressure of the high-pressure injector is stopped from being increased, and the syringe barrel of the high-pressure injector is inspected in real time for 30 seconds using the image detection technology; when the injection pressure of the high-pressure injector increases by 45% of the barrel rupture pressure, the injection pressure of the high-pressure injector is stopped from being increased, and the syringe barrel of the high-pressure injector is inspected in real time for 25 seconds using the image detection technology; The specific detection process of real-time detection of the surface image of the cylinder of the high-pressure injector is as follows: The cylinder surface image of the high-pressure syringe is converted into a grayscale image, and the average grayscale value of the grayscale image is calculated. If the grayscale value of any pixel is greater than the average grayscale value of the grayscale image, the corresponding pixel is set to white; if the grayscale value of any pixel is less than or equal to the average grayscale value of the grayscale image, the corresponding pixel is set to black, and a binary image of the cylinder surface image is obtained. Edge detection is performed on the binary image to obtain a suspected crack area of ​​the cylinder surface image. If the aspect ratio of the suspected crack area is greater than or equal to the aspect ratio threshold, or the area of ​​the suspected crack area is greater than or equal to the area threshold, the suspected crack area is determined to be a cylinder surface crack; if the aspect ratio of the suspected crack area is less than the aspect ratio threshold, and the area of ​​the suspected crack area is less than the area threshold, no operation is performed. It should be specifically noted that identifying cracks in the cylinder surface image by edge detection is a prior art; Repeat the above test steps until the test injection pressure of the high-pressure injector reaches the upper limit of the test injection pressure and then stop the test; The pressure testing module sends the product abnormality signal or the product qualified signal to the control center, and the control center sends the product abnormality signal or the product qualified signal to the display terminal, and the display terminal is used to display the product abnormality signal or the product qualified signal corresponding to the high-pressure injector.

[0026] Example 2: Please refer to Figure 3 As shown, the present invention also provides a technical solution: a high-pressure syringe limit test method, the method comprising: Step S10, inputting the model of the high-pressure injector and the serial number of the test fluid, obtaining the standard injection data and product standard data of the corresponding high-pressure injector according to the model, and obtaining the fluid data of the corresponding test fluid according to the serial number; Step S20, testing the air tightness of the high-pressure injector, and generating an abnormal air tightness signal or a normal air tightness signal; Step S30, if a normal airtight signal is generated, real-time fluid flow rates of the test fluid in the high-pressure injector when injected at different pressures are collected, and the flow rates of the test fluid in the high-pressure injector at different pressures are analyzed to generate an abnormal flow rate signal, a normal pressure drop signal, or an abnormal pressure drop signal; Step S40, if a normal pressure drop signal is generated, the surface image of the cylinder of the high-pressure injector is collected, and a pressure test is performed on the syringe cylinder of the high-pressure injector to generate a product abnormality signal or a product qualified signal; In this application, if corresponding calculation formulas appear, the above calculation formulas are all dimensionless and take their numerical calculations. The weight coefficients, proportional coefficients and other coefficients in the formulas are set to a result value obtained by quantifying each parameter. The size of the weight coefficient and the proportional coefficient can be determined as long as it does not affect the proportional relationship between the parameter and the result value.

[0027] Example 3: Figure 4 As shown, this embodiment provides a computer device, which may include: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus. The processor may call the logic instructions in the memory to execute a high-pressure syringe limit test method, which includes: inputting the model of the high-pressure syringe and the number of the test fluid, obtaining the standard injection data and product standard data of the corresponding high-pressure syringe according to the model, obtaining the fluid data of the corresponding test fluid according to the number, testing the air tightness of the high-pressure syringe, and generating an air tightness abnormal signal or an air tightness normal signal. If an air tightness normal signal is generated, the real-time fluid flow rate of the test fluid in the high-pressure syringe when injected under different pressures is collected, and the flow rate of the test fluid of the high-pressure syringe under different pressures is analyzed, and the flow rate abnormality signal, the normal pressure drop signal, or the pressure drop abnormality signal is generated. If a pressure drop normal signal is generated, the surface image of the cylinder of the high-pressure syringe is collected, and the syringe cylinder of the high-pressure syringe is pressure tested to generate a product abnormality signal or a product qualified signal.

[0028] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0029] Embodiment 4: The present application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute a high-pressure syringe limit test method provided by the above methods, the method including: inputting the model of the high-pressure syringe and the number of the test fluid, obtaining the standard injection data and product standard data of the corresponding high-pressure syringe according to the model, obtaining the fluid data of the corresponding test fluid according to the number, testing the airtightness of the high-pressure syringe, and the test generates an airtight abnormal signal or an airtight normal signal. If an airtight normal signal is generated, the real-time fluid flow rate of the test fluid in the high-pressure syringe when injected at different pressures is collected, and the flow rate of the test fluid in the high-pressure syringe at different pressures is analyzed to generate an abnormal flow rate signal, a normal pressure drop signal or an abnormal pressure drop signal. If a normal pressure drop signal is generated, the surface image of the barrel of the high-pressure syringe is collected, and the syringe barrel of the high-pressure syringe is pressure tested to generate a product abnormal signal or a product qualified signal.

[0030] Embodiment 5: The present application also provides a computer-readable storage medium having a computer program stored thereon, which is implemented when the processor executes a high-pressure syringe limit test method provided above, the method comprising: inputting the model of the high-pressure syringe and the number of the test fluid, obtaining the standard injection data and product standard data of the corresponding high-pressure syringe according to the model, obtaining the fluid data of the corresponding test fluid according to the number, testing the airtightness of the high-pressure syringe, the test generates an airtight abnormal signal or an airtight normal signal, if the airtight normal signal is generated, the real-time fluid flow rate of the test fluid in the high-pressure syringe when injected at different pressures is collected, and the flow rate of the test fluid in the high-pressure syringe at different pressures is analyzed, the analysis generates an abnormal flow rate signal, a normal pressure drop signal or an abnormal pressure drop signal, if the normal pressure drop signal is generated, the surface image of the barrel of the high-pressure syringe is collected, and the syringe barrel of the high-pressure syringe is pressure tested to generate a product abnormal signal or a product qualified signal.

[0031] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0032] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-pressure injector limit test system, characterized in that: It includes a user terminal, a data acquisition module, an airtight test module, a fluid analysis module, a pressure test module, a display terminal, a control center and a database module; the user terminal is used to input the model of the high-pressure injector and the number of the test fluid and send them to the database module; the database module is used to send the standard injection data of the corresponding high-pressure injector to the airtight test module according to the model, send the product standard data of the corresponding high-pressure injector to the pressure test module and the fluid analysis module according to the model, and send the fluid data of the corresponding test fluid to the fluid analysis module according to the number; the airtight test module is used to test the airtightness of the high-pressure injector, and the test generates an airtight abnormality signal or an airtight normal signal and sends it to the control center. If an airtight abnormality signal is generated, it is sent to the display terminal; if a airtight normal signal is generated, a fluid analysis instruction is sent to the fluid analysis module; The data acquisition module is used to collect the real-time fluid flow rate of the test fluid in the high-pressure syringe when it is injected at different pressures and send it to the fluid analysis module; the fluid analysis module is used to analyze the flow rate of the test fluid of the high-pressure syringe at different pressures, and the analysis generates an abnormal flow rate signal, a normal pressure drop signal or an abnormal pressure drop signal and sends it to the control center; if an abnormal flow rate signal or an abnormal pressure drop signal is generated, it is sent to the display terminal; if a normal pressure drop signal is generated, a cylinder pressure test instruction is sent to the pressure test module; The data acquisition module is also used to collect the surface image of the barrel of the high-pressure syringe and send it to the pressure testing module; the pressure testing module is used to perform pressure testing on the syringe barrel of the high-pressure syringe, generate a product abnormality signal or a product qualified signal and send it to the control center, the control center sends the product abnormality signal or the product qualified signal to the display terminal, and the display terminal is used to display the signal corresponding to the high-pressure syringe.

2. A high-pressure injector limit test system according to claim 1, characterized in that: The standard injection data includes the maximum injection pressure and standard injection pressure of different models of high-pressure injectors.

3. A high-pressure injector limit test system according to claim 2, characterized in that: The testing process of the airtight test module includes: Obtain the standard inert gas content in the air under a standard environment, sink the high-pressure syringe into a transparent water tank, then inject the inert gas into the high-pressure syringe, and adjust the injection pressure to the standard injection pressure of the high-pressure syringe; The real-time inert gas content on the surface of the transparent water tank is collected. If the real-time inert gas content is greater than the standard inert gas content, the airtightness test result of the high-pressure injector is determined to be abnormal, and an airtightness abnormality signal is generated. If the real-time inert gas content is less than or equal to the standard inert gas content, proceed to the next step.

4. A high-pressure injector limit test system according to claim 3, characterized in that: The testing process of the airtight test module also includes: The standard injection pressure is gradually increased by a fixed percentage until the maximum injection pressure of the high-pressure injector is reached and the test is stopped; When there are no bubbles in the transparent water tank of the high-pressure injector at all test injection pressures, an airtight normal signal is generated; When there are bubbles in the transparent water tank at any test injection pressure of the high-pressure injector, the real-time inert gas content on the surface of the transparent water tank is collected. If the real-time inert gas content on the surface of the transparent water tank is greater than the standard inert gas content, an abnormal airtightness signal is generated; if the real-time inert gas content on the surface of the transparent water tank is less than or equal to the standard inert gas content, a normal airtightness signal is generated.

5. A high-pressure injector limit test system according to claim 4, characterized in that: The product standard data include the barrel length, barrel inner radius, barrel flow value, barrel outer radius and barrel wall thickness of high-pressure injectors of different models, and the maximum tensile strength of the corresponding barrel of the high-pressure injector; The fluid data are the fluid viscosity and fluid density of the test fluids with different numbers when the high-pressure injector performs the fluid test.

6. A high-pressure injector limit test system according to claim 5, characterized in that: The analysis process of the fluid analysis module includes: Injecting a test fluid into the high-pressure injector, and then adjusting the injection pressure of the high-pressure injector to the test injection pressure; Obtaining the fluid density corresponding to the test fluid and the standard atmospheric pressure of the standard environment during the test, and calculating the initial standard fluid flow rate of the test fluid; Then, the real-time fluid flow rate of the test fluid is obtained, and the real-time fluid flow rate is compared with the initial standard fluid flow rate; If the real-time fluid flow rate of the test fluid is equal to the initial standard fluid flow rate, the test is continued; if the initial fluid flow rate of the test fluid is not equal to the initial standard fluid flow rate, the test is stopped and a flow rate abnormality signal is generated; The test injection pressure is increased upward by a fixed percentage of the standard injection pressure to obtain the real-time fluid flow rate corresponding to the test fluid at the next test injection pressure, until the test injection pressure reaches the maximum injection pressure of the high-pressure injector, and the real-time fluid flow rate corresponding to the test fluid when the test injection pressure is the maximum injection pressure is obtained; If the real-time fluid flow rate of the test fluid corresponding to any test injection pressure is not equal to the standard fluid flow rate corresponding to the test injection pressure, a flow rate abnormality signal is generated and the test of the high-pressure injector is stopped; If the real-time fluid flow rate of the test fluid corresponding to each test injection pressure is equal to the standard fluid flow rate corresponding to the test injection pressure, proceed to the next step.

7. A high-pressure injector limit test system according to claim 6, characterized in that: The analysis process of the fluid analysis module also includes: Obtain the barrel length and inner radius of the high-pressure injector, the fluid viscosity and barrel flow value corresponding to the test fluid used in the test, and calculate the pressure drop value of the high-pressure injector; If the pressure drop value of the high-pressure injector belongs to the pressure drop value interval, a normal pressure drop signal is generated; If the pressure drop value of the high-pressure injector does not belong to the pressure drop value range, a pressure drop abnormality signal is generated and the test of the high-pressure injector is stopped.

8. A high-pressure injector limit test system according to claim 7, characterized in that: The testing process of the stress testing module includes: Obtain the outer radius of the barrel of the high-pressure syringe, the barrel wall thickness and the maximum tensile strength of the syringe barrel, and calculate the barrel rupture pressure of the high-pressure syringe; Injecting a test fluid into the high-pressure injector, and setting the injection pressure of the high-pressure injector to a test injection pressure, and setting a real-time detection duration corresponding to the test injection pressure; wherein the test injection pressure is inversely proportional to the real-time detection duration; When the injection pressure of the high-pressure injector increases to the test injection pressure, stop increasing the injection pressure.

9. A high-pressure injector limit test system according to claim 8, characterized in that: The testing process of the stress testing module also includes: Real-time detection of the cylinder surface image of the high-pressure injector; If there are cracks on the barrel surface image, the current test injection pressure is compared with the barrel rupture pressure. When the test injection pressure of the high-pressure injector is less than the barrel rupture pressure, the barrel pressure test of the high-pressure injector is judged to be unqualified, and a product abnormality signal is generated. When the test injection pressure of the high-pressure injector is greater than or equal to the barrel rupture pressure, the barrel pressure test of the high-pressure injector is judged to be qualified, and a product qualified signal is generated. If there are no cracks in the cylinder surface image, continue the test until the test injection pressure of the high-pressure injector reaches the upper limit of the test injection pressure and then stop the test.

10. A high-pressure injector limit test system according to claim 9, characterized in that: The detection process of real-time detection of the cylinder surface image of the high-pressure injector is as follows: Convert the surface image of the cylinder of the high-pressure injector into a grayscale image, and calculate the average grayscale value of the grayscale image; If the gray value of any pixel is greater than the average gray value of the gray image, the corresponding pixel is set to white; if the gray value of any pixel is less than or equal to the average gray value of the gray image, the corresponding pixel is set to black, thereby obtaining a binary image of the cylinder surface image; Perform edge detection on the binary image to obtain the suspected crack area of ​​the cylinder surface image; If the aspect ratio of the suspected crack region is greater than or equal to the aspect ratio threshold, or the area of ​​the suspected crack region is greater than or equal to the area threshold, the suspected crack region is determined to be a cylinder surface crack; If the aspect ratio of the suspected crack region is less than the aspect ratio threshold, and the area of ​​the suspected crack region is less than the area threshold, no operation is performed.

11. A high-pressure injector limit test method, characterized in that: In combination with a high-pressure injector limit test system according to any one of claims 1 to 10, the method comprises: Step S10, inputting the model of the high-pressure injector and the serial number of the test fluid, obtaining the standard injection data and product standard data of the corresponding high-pressure injector according to the model, and obtaining the fluid data of the corresponding test fluid according to the serial number; Step S20, testing the air tightness of the high-pressure injector, and generating an abnormal air tightness signal or a normal air tightness signal; Step S30, if a normal airtight signal is generated, real-time fluid flow rates of the test fluid in the high-pressure injector when injected at different pressures are collected, and the flow rates of the test fluid in the high-pressure injector at different pressures are analyzed to generate an abnormal flow rate signal, a normal pressure drop signal, or an abnormal pressure drop signal; Step S40: if a normal pressure drop signal is generated, the surface image of the cylinder of the high-pressure injector is collected, and a pressure test is performed on the syringe cylinder of the high-pressure injector to generate a product abnormality signal or a product qualified signal.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the high-pressure injector limit testing method described in claim 11 is implemented.

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