Pouring detection method and device for direct-current support capacitor

Abstract

The invention relates to the technical field of capacitor manufacturing, and discloses a pouring detection method and device for a direct-current support capacitor, and the pouring process of the direct-current support capacitor comprises the steps: mixing a material A and a material B, and obtaining the first mass change data of the material A, the second mass change data of the material B and the flow consumption data of the material B; wherein the second mass change data is obtained by detecting the mass change of the material barrel B; and the flow consumption data is obtained by detecting the flow of the material B flowing through the flow detection module. And determining mass consumption transformation ratio data between the material A and the material B by using the first mass change data and the second mass change data. And detecting the pouring quality of the direct current support capacitor according to the mass consumption transformation ratio data and / or the flow consumption data of the material B. The proportioning precision of the material A and the material B during pouring of the direct-current support capacitor is improved, and the technical effect of meeting the requirement for accurate proportioning is achieved.

Description

Technical Field

[0001] The present application relates to the field of capacitor manufacturing technology, and in particular to a method and device for detecting the casting of a DC support capacitor. The present invention claims priority to Chinese patent application number 202411173376.2, filed on August 26, 2024, entitled “A method and device for detecting the casting of a DC support capacitor”, the entire contents of which are incorporated by reference in this disclosure. Background Art

[0002] The DC support capacitor, also known as the DC-link capacitor, is mainly used in flexible DC transmission to absorb the high-amplitude pulsating current required by the inverter from the DC-Link, prevent it from generating a high-amplitude pulsating voltage on the impedance of the DC-Link, keep the power supply voltage fluctuation at the inverter end within the allowable range, and prevent the voltage overshoot and transient overvoltage from the DC-Link from affecting the inverter.

[0003] In recent years, with the increasing scale of power generation from new energy sources such as photovoltaics and wind power, flexible DC transmission technology has gradually been put on the agenda. This technology has the advantages of suppressing harmonics, reducing reactive compensation capacity, and avoiding commutation failure. It is an important direction for the development of current power transmission and distribution technology. DC support capacitors have been widely used in flexible DC transmission projects due to their superior electrical properties.

[0004] The casting of capacitors is mainly used for its sealing and insulation, and the quality of casting is particularly important to the performance of capacitors. In the related art, the casting of DC support capacitors mainly relies on lever proportioning to complete the proportion of A material and B material.

[0005] However, the accuracy of the ratio of material A and material B in the related technology needs to be improved to meet the precise ratio requirements. Summary of the invention

[0006] The present application provides a casting detection method and device for a DC support capacitor, which solves the technical problem in the related art that the ratio accuracy of material A and material B needs to be improved when casting a DC support capacitor, and achieves the technical effect of meeting the precise ratio requirements.

[0007] In order to achieve the above objectives, the main technical solutions adopted in this application include:

[0008] In a first aspect, an embodiment of the present application provides a casting detection method for a DC support capacitor, wherein the casting process of the DC support capacitor includes mixing material A and material B; the method includes:

[0009] Obtain the first mass change data of the A material, the second mass change data of the B material and the flow consumption data of the B material; wherein the second mass change data is obtained by detecting the mass change of the B material barrel; and the flow consumption data is obtained by detecting the flow of the B material flowing through the flow detection module.

[0010] The mass consumption ratio data between the A material and the B material is determined using the first mass change data and the second mass change data.

[0011] The casting quality of the DC support capacitor is detected according to the mass consumption ratio data and / or the flow consumption data of the B material.

[0012] Optionally, the detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material includes:

[0013] Based on the comparison between the second mass change data and the flow consumption data, the consumption evaluation data of the B material is obtained.

[0014] The casting quality of the DC support capacitor is detected according to the mass consumption ratio data and the consumption evaluation data of the B material.

[0015] Optionally, controlling the casting quality of the DC support capacitor according to the mass consumption ratio data and the consumption evaluation data of the B material includes:

[0016] When the casting of the DC support capacitor is completed, the mass consumption ratio data and the consumption evaluation data of the B material are used to determine whether the casting quality of the DC support capacitor is qualified.

[0017] Optionally, the DC support capacitor is judged to be casted in the following manner, including:

[0018] The first consumption rated mass of the A material and the second consumption rated mass of the B material are obtained.

[0019] If the first mass change data reaches the first consumption rated mass, or the second mass change data reaches the second consumption rated mass, it is determined that the DC support capacitor is cast.

[0020] Optionally, the detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and the consumption evaluation data of the B material includes:

[0021] If the mass consumption ratio data meets the first casting qualified condition, the casting quality of the DC support capacitor is judged by using the consumption evaluation data of the B material to detect the casting quality.

[0022] Optionally, the judging the casting quality of the DC support capacitor by using the consumption assessment data of the B material includes:

[0023] If the consumption evaluation data of the B material meets the second casting qualified condition, it is determined that the casting quality of the DC support capacitor is qualified.

[0024] Optionally, the flow consumption data of the B material is obtained by the following methods, including:

[0025] Determine the flow value of the B material flowing through the cross section of the flow detection module per unit time.

[0026] The flow consumption data is obtained by accumulating the flow value, the density of the B material and the pouring time of the B material; wherein the pouring time of the B material is the time duration for the B material to flow through the flow detection module during the pouring process of the DC support capacitor.

[0027] Optionally, the detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material includes at least one of the following situations:

[0028] If the difference between the mass consumption ratio data and the preset consumption ratio threshold exceeds the preset difference threshold, it is determined that the casting quality of the DC support capacitor is unqualified, and the casting of the DC support capacitor is stopped and an alarm is triggered.

[0029] If the flow consumption data exceeds the flow upper limit of the B material, the pouring speed is determined to be unqualified and an alarm is triggered.

[0030] If the difference between the mass consumption ratio data and the preset consumption ratio threshold is less than the preset difference threshold, and the flow consumption data is within the flow upper limit of the B material, the casting of the DC support capacitor is continued.

[0031] Optionally, the method further comprises:

[0032] In response to the alarm record viewing operation, the alarm record generated during the casting process of the DC support capacitor is displayed in the alarm record interface.

[0033] In response to the pouring waveform viewing operation, the A material consumption waveform and the B material consumption waveform during the pouring process of the DC support capacitor are displayed in the historical waveform interface.

[0034] In a second aspect, an embodiment of the present application provides a casting detection device for a DC support capacitor, wherein the casting process of the DC support capacitor includes mixing material A and material B; the device includes:

[0035] The change data acquisition module is used to obtain the first mass change data of the A material, the second mass change data of the B material and the flow consumption data of the B material; wherein the second mass change data is obtained by detecting the mass change of the B material barrel; and the flow consumption data is obtained by detecting the flow rate of the B material flowing through the flow detection module.

[0036] The ratio data determination module determines the mass consumption ratio data between the A material and the B material by using the first mass change data and the second mass change data.

[0037] A casting quality detection module is used to detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material.

[0038] In a third aspect, an embodiment of the present application provides a casting detection device for a DC support capacitor, wherein the casting process of the DC support capacitor includes mixing material A and material B; the device includes: a first quality detection module, a second quality detection module, a flow detection module and a controller; the first quality detection module, the second quality detection module and the flow detection module are respectively connected to the controller.

[0039] The first quality detection module is used to detect the mass change of the A material barrel and obtain the first mass change data of the A material.

[0040] The second quality detection module is used to detect the mass change of the B material barrel and obtain the second mass change data of the B material.

[0041] The flow detection module is used to detect the flow change of the B material circuit and obtain the flow consumption data of the B material.

[0042] The controller is used to determine the mass consumption ratio data between the A material and the B material using the first mass change data and the second mass change data; and detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material.

[0043] In the embodiment of the present application, by simultaneously detecting the mass consumption ratio data between material A and material B and the flow consumption data of material B during the casting process of the DC support capacitor, comparing the two methods of mass measurement and flow measurement, and comprehensively monitoring the changes in casting material consumption, the accuracy of the data can be better ensured, the accuracy of the ratio of material A and material B can be improved, and the consistency of capacitor casting can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1a A schematic diagram of the client interface of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0046] Figure 1b A main circuit diagram of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0047] Figure 1c A control circuit diagram of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0048] Figure 1d A control circuit diagram of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0049] Figure 1e A flow chart of connection and use of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0050] Figure 2 A diagram of a pouring detection method for a DC support capacitor provided in an embodiment of this specification;

[0051] Figure 3 A diagram of a pouring detection method for a DC support capacitor provided in an embodiment of this specification;

[0052] Figure 4a This is an alarm record interface diagram of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0053] Figure 4b A historical data interface diagram of a pouring device for a DC support capacitor provided in an embodiment of this specification;

[0054] Figure 5 A diagram of a casting device for a DC support capacitor provided in an embodiment of this specification;

[0055] Figure 6 A diagram of a casting detection device for a DC support capacitor provided in an embodiment of this specification. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0057] In the related art, the casting of DC support capacitors mainly relies on lever proportioning to complete the proportion of material A and material B. The lack of effective quality inspection can easily cause uneven mixing of the cast materials, which may cause various problems in the capacitor, such as unstable electrical performance and incomplete local curing.

[0058] Furthermore, the casting of the DC support capacitor is also completed by visual inspection, lacking numerical indicators, which may cause its capacitance to fail to meet the design requirements.

[0059] Therefore, this application proposes a method and device for detecting the casting of a DC support capacitor. Figure 1a The device includes an A material barrel 110 for injecting A material, a B material barrel 120 for injecting B material, a first mass module 111 for measuring the mass change of the A material barrel 110, a second mass module 121 for measuring the mass change of the B material barrel 120, and a flow detection module 122 for measuring the flow consumption of the B material. The first mass module 111 is used to detect the mass of the A material barrel 110, the second mass module 121 is used to detect the mass of the B material barrel 120, and the flow detection module 122 is used to detect the flow of the B material circuit. After the A material and the B material enter the mixing pipe 130 and mix, the DC support capacitor can be cast.

[0060] It should be noted that material A can be a curing agent, and material B can be a resin, such as epoxy resin, polyurethane resin, acrylate resin, etc. The function of material A is to react with material B after mixing, promote the curing process of material B, and form a solid network structure, thereby ensuring that the castable has good physical and electrical properties during use. Since material A is easy to solidify when it encounters air, causing siltation inside the pipeline and blocking the pipeline, the flow detection module cannot be installed in the loop of material A and can only be used to detect the flow of the loop of material B.

[0061] See also Figures 1b to 1e The installation and brief pouring steps of the capacitor pouring device are as follows:

[0062] S101, equipment pipeline and line connection.

[0063] Refer to the main circuit of the device Figure 1b , control loop Figure 1c and Figure 1d The main circuit and control circuit are connected.

[0064] S102. Open the client and set parameters.

[0065] The host computer client is set in PC 128. For the client interface, please refer to Figure 1a If the client and the device communicate normally, the client interface can be displayed normally. Relevant parameters need to be set on the interface, including: curing agent / resin consumption ratio 160, curing agent remaining alarm 161, resin remaining alarm 162, curing agent consumption 163, resin consumption 164, maximum flow rate 165 and cumulative flow maximum value 166.

[0066] S103, casting material is added and capacitor is connected.

[0067] The materials are poured into the A barrel 110 and the B barrel 120 respectively, and the filling volume should not exceed 90% of the total capacity, and then the capacitors to be cast are connected.

[0068] S104: Pouring begins.

[0069] Click the <Start / Stop> button 100 on the client interface, the program drives the switch output device 127, the main circuit solenoid valve 125 opens, the gas is connected, the injection pump starts to start pouring the capacitor to be poured.

[0070] During the pouring process, if there is insufficient material A or material B, the pouring is stopped and the buzzer 126 is driven to sound an alarm. If the transformation ratio of material A and material B is wrong or the pouring speed is too fast, the pouring is stopped and the buzzer 126 is driven to sound an alarm.

[0071] S105. Check the pouring data.

[0072] Specifically, the device adopts ODBC technology to establish an ODBC data source, stores real-time data in a relational database, and provides a basis for quality traceability.

[0073] After pouring begins, you can check the error between the flow detection calculated value and the quality detection calculated value. If it meets the standard, the pouring is qualified, otherwise the pouring is unqualified.

[0074] S106: Casting is completed.

[0075] If no abnormality occurs during the pouring process and the completion standard is reached, the device can stop automatically.

[0076] According to an embodiment of the present application, a casting detection method and device embodiment of a DC support capacitor is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0077] See also Figure 2 The pouring process of the DC support capacitor provided in the embodiment of the present application includes mixing material A and material B, and the pouring detection method of the capacitor includes:

[0078] S210 , obtaining first mass change data of material A, second mass change data of material B, and flow consumption data of material B.

[0079] The first mass change data may be the mass of material A consumed by the material barrel A 110 when a capacitor is cast, and may be obtained by detecting the mass change of the material barrel A 110. The second mass change data may be the mass of material B consumed by the material barrel B 120 when a capacitor is cast, and may be obtained by detecting the mass change of the material barrel B 120. The flow consumption data may be the flow rate flowing through the pipeline where the material barrel B is located when a capacitor is cast, and may be obtained by detecting the flow rate of the pipeline.

[0080] Specifically, the quality of the B material barrel 120 can be inspected by a quality measuring device, such as an electronic floor scale. b0 The mass of the B bucket 120 at the beginning of pouring is represented by M b The mass of the B barrel 120 at the end of the test is represented by M bcos Characterize the second mass change data of material B, then:

[0081] M bcos =M b -M b0

[0082] It should be noted that, through the flow detection module 122, the real-time flow consumption data of material B can be obtained, and the cumulative flow consumption data of material B can also be obtained. Exemplarily, the flow detection module 122 can be a turbine detector.

[0083] It is understandable that the first mass change data of material A can be obtained by measuring with an electronic weighbridge, that is, using M a0 The mass of the A barrel 110 at the start of the test is represented by M a The mass of the A barrel 110 at the end of the test is represented by M acos Characterize the first mass change data of material A, then:

[0084] M acos =M a -M a0

[0085] S220, determining mass consumption ratio data between material A and material B using the first mass change data and the second mass change data;

[0086] The mass consumption ratio between material A and material B can be the ratio of the first mass change data of material A to the second mass change data of material B at a certain moment in the casting process of the DC support capacitor, and B is used as ab Characterize this ratio, then B ab =M acos / M bcos It can be understood that this ratio represents the ratio of material A and material B in the casting material, and the casting of qualified capacitors requires that this ratio meet the quality inspection standards during the casting process.

[0087] S230: Detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material.

[0088] Specifically, in some embodiments, the casting quality of the DC support capacitor can be detected based on the mass consumption ratio data between material A and material B. For example, the mass M of the material barrel A 110 and the material barrel B 120 can be collected every certain time, such as 2 seconds, from the beginning of casting. a 、M b , and calculate the first mass change data M according to the formula provided in S210 acos and the second mass change data M bcos , and further calculate the mass consumption ratio B of material A and material B according to the formula provided in S220 ab , determine whether the ratio meets the quality inspection standards.

[0089] In other embodiments, the casting quality of the DC support capacitor can be detected based on the flow consumption data of material B, and the flow consumption data of material B can be real-time flow consumption data or cumulative flow consumption data. For example, from the beginning of casting, the flow of material B is detected at regular intervals to see whether it is within a certain range. For example, the regular interval can be equal to 5s, and the flow of material B during this period is detected to see whether it is within a certain range.

[0090] In some other embodiments, the two methods of mass consumption ratio data and flow consumption data of material B can be combined to detect the casting quality of the DC support capacitor. It can be understood that this embodiment requires that the mass consumption ratio data of material A and material B meet the detection standard, and the flow consumption data of material B also meets the detection standard.

[0091] See also Figure 3 In some embodiments, the casting quality of the DC support capacitor is detected according to the mass consumption ratio data and / or the flow consumption data of the B material, including:

[0092] S310. Obtain consumption evaluation data of material B based on comparison between the second mass change data and the flow consumption data.

[0093] Specifically, using M vbcos Characterize the accumulated flow consumption data of material B. Based on the comparison between the second mass change data of material B and the accumulated flow consumption data, the difference between the second mass change data of material B and the accumulated flow consumption data can be determined as the consumption evaluation data, such as |M bcos -M vbcos |. You can also determine the ratio of two data as consumption evaluation data, such as M bcos / M vbcos , you can also use |(M bcos -M vbcos ) / M vbcos |or|(M bcos -M vbcos ) / M bcos |As consumption assessment data.

[0094] S320, detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and the consumption evaluation data of the B material.

[0095] In some embodiments, the mass consumption ratio data B of material A and material B can be used. ab and consumption evaluation data of material B, such as |(M bcos -M vbcos ) / M vbcos |, check the casting quality of capacitors.

[0096] In other embodiments, the casting quality of the DC support capacitor can be detected by the flow consumption data of material B and the consumption evaluation data of material B. For example, the flow consumption data of material B can be its real-time flow consumption data or its cumulative flow consumption data. One of them is selected together with the consumption evaluation data of material B, such as |M bcos -M vbcos |, check the casting quality of capacitors.

[0097] In some other embodiments, the mass consumption ratio data B between material A and material B can be used. ab The casting quality of the capacitor is tested by combining these three indicators: the flow consumption data of A material and the consumption evaluation data of B material.

[0098] In some embodiments, the casting quality of the DC support capacitor is controlled according to the mass consumption ratio data and the consumption assessment data of the B material, including: when the casting of the DC support capacitor is completed, using the mass consumption ratio data and the consumption assessment data of the B material to determine whether the casting quality of the DC support capacitor is qualified.

[0099] For example, when the DC support capacitor is cast, if its mass consumption ratio data B ab Consumption evaluation data of material B|M bcos -M vbcos |If they are all within the standard range, the casting quality is judged to be qualified, otherwise it is judged to be unqualified.

[0100] In some embodiments, the DC support capacitor is judged to be casted in the following manner, including: obtaining a first consumption rated mass of material A and a second consumption rated mass of material B. If the first mass change data reaches the first consumption rated mass, or the second mass change data reaches the second consumption rated mass, it is judged that the DC support capacitor is casted.

[0101] Among them, M as Characterize the first consumption rated mass of material A, M bs The second consumption rated mass of material B is characterized. For example, when pouring starts, the mass M of the material barrel A 110 is obtained by the first mass module 111. a0 The mass M of the B barrel 120 is obtained by the second mass module 121 b0 During the pouring process, at a certain time interval t, for example, t=2s, the first mass module 111 obtains the mass M of the A bucket 110 a The mass M of the B barrel 120 is obtained by the second mass module 121 b ; Further, the mass consumption M of material A can be obtained acos =M a -M a0 , the mass consumption of material B is M bcos =M b -M b0 ; When the consumption of material A or material B reaches the rated value, it can be when M acos ==M as or M bcos ==M bs When the capacitor is cast, it is determined that the casting is completed.

[0102] It is understandable that if M s Indicates the total consumption rated mass of material A and material B, that is, M s =M as +M bs , the total consumption rated mass can also be reached through the total consumption mass of material A and material B, that is, M acos +M bcos ≥M s The capacitor is judged to be cast.

[0103] In some embodiments, the casting quality of the DC support capacitor is detected based on the mass consumption ratio data and the consumption assessment data of the B material, including: if the mass consumption ratio data meets the first casting qualification condition, the casting quality of the DC support capacitor is judged using the consumption assessment data of the B material to detect the casting quality.

[0104] Among them, the first pouring qualified condition is the mass consumption ratio B of material A and material B. ab Conditions to be met. For example, it may be required that the difference between the ratio and the standard value of the mass consumption ratio be kept within a certain range, using B s Characterizes the standard value of the mass consumption ratio of material A and material B. If |B ab -B s |≤c s1 (c s1 is a constant), the mass consumption ratio data is determined to meet the first pouring qualification condition, otherwise it is determined to be unsatisfactory. For example, it may be required that the ratio of the ratio and the mass consumption ratio standard value be kept within a certain range. If c s2 ≤B ab / B s ≤c s3 (c s2 、c s is a constant), the mass consumption ratio data is judged to meet the first casting qualification condition, otherwise it is judged to be unsatisfactory.

[0105] In some embodiments, the first mass consumption data M of material A is obtained. acos , the second mass consumption data M of material B bcos After that, further, the mass consumption ratio data B can be obtained ab , when B ab When the first pouring qualification condition is met, for example, |B ab -B s |≤c s1 Furthermore, the consumption evaluation data of material B is used to detect the casting quality of the capacitor.

[0106] In other embodiments, when Bab When the first pouring qualification condition is met, for example, c s2 ≤B ab / B s ≤c s3 , further, the flow consumption data of material B and the consumption evaluation data of material B are detected to detect the casting quality of the capacitor. For example, the real-time flow consumption data of material B is within the standard range, and the consumption evaluation data of material B|(M bcos -M vbcos ) / M vbcos |If the casting quality of the capacitor is also within the standard range, it is judged to be qualified, otherwise it is judged to be unqualified.

[0107] In some other embodiments, when the DC support capacitor is cast, the mass consumption ratio data B ab After the first qualified casting condition is met, the casting quality of the capacitor is tested using the consumption evaluation data of material B or the flow consumption data of material B and the consumption evaluation data of material B.

[0108] In some embodiments, the casting quality of the DC support capacitor is judged using the consumption assessment data of the B material, including: if the consumption assessment data of the B material meets the second casting qualified condition, judging that the casting quality of the DC support capacitor is qualified.

[0109] The second pouring qualified condition may be that the consumption evaluation data of material B meets the required condition. The consumption evaluation data of material B may be obtained by using the evaluation method in S310, for example, it may be |(M bcos -M vbcos ) / M vbcos |≤c 61 (c 61 is a constant).

[0110] In some embodiments, the DC support capacitor is cast, if the mass consumption ratio data B ab The first pouring qualification condition is met, for example, |B ab -B s |≤c s1 , further, the consumption evaluation data of material B meets the second pouring qualification condition, such as |(M bcos -M vbcos ) / M vbcos |≤c 61 , then it is judged that the casting quality of the DC support capacitor is qualified.

[0111] In other embodiments, when B ab When the first pouring qualification condition is met, for example, c s2 ≤B ab / Bs ≤c s3 , further, the consumption evaluation data of material B meets the second pouring qualification condition, such as |(M bcos -M vbcos ) / M vbcos |≤c 61 , and the flow consumption data of material B meets the standard, then the casting quality of the DC support capacitor is judged to be qualified.

[0112] In some embodiments, the flow consumption data of material B is obtained by the following method, including: determining the flow value of material B flowing through the cross-section of the flow detection module per unit time; accumulating the flow value, the density of material B and the pouring time of material B to obtain the flow consumption data.

[0113] The B material pouring time is the time length for which the B material flows through the flow detection module during the pouring process of the DC support capacitor.

[0114] For example, when the flow detection module 122 is a turbine flow detector, S b The flow rate of material B flowing through the cross section of the turbine flow detector per unit time is L / s, and the density of material B is represented by ρ, which is KG / L. Then, the cumulative consumption data of material B flowing through the flow detection module 122 within a time length of t is:

[0115]

[0116] Among them, S b =K×N×D 2 ×C, K is used to represent the flow coefficient; n is used to represent the rotational speed, the unit is r / min; d is used to represent the turbine diameter, the unit is m; C is used to represent the correction coefficient, which is used to compensate for the influence of factors such as resistance and viscosity between the turbine and the fluid on flow detection.

[0117] In some embodiments, the casting quality of the DC support capacitor is detected according to the mass consumption ratio data and / or the flow consumption data of the B material, including at least one of the following situations:

[0118] If the difference between the mass consumption ratio data and the preset consumption ratio threshold exceeds the preset difference threshold, the casting quality of the DC support capacitor is judged to be unqualified, and the casting of the DC support capacitor is stopped and an alarm is triggered.

[0119] If the flow consumption data exceeds the flow upper limit of material B, the pouring speed is judged to be unqualified and an alarm is triggered.

[0120] If the difference between the mass consumption ratio data and the preset consumption ratio threshold is less than the preset difference threshold, and the flow consumption data is within the flow upper limit of material B, the casting of the DC support capacitor continues.

[0121] Specifically, the pouring device in this embodiment can trigger an alarm. threshold Characterize the preset consumption ratio threshold, c 81 Characterize the preset difference threshold, and obtain the mass consumption ratio data B of material A and material B during the casting process of the capacitor ab Afterwards, with B threshold Calculate the difference and compare it with the preset difference threshold c 81 For comparison. For example, if |B ab -B threshold |≥c 81 , it is determined that the casting quality of the DC support capacitor is unqualified, the casting of the DC support capacitor is stopped, and the buzzer 126 is driven to sound an alarm.

[0122] In other embodiments, S bmax Indicates the flow upper limit of material B. If the flow consumption data exceeds the flow upper limit of material B during the pouring process, that is, S b ≥S bmax , which means that the pouring speed is too fast, then the pouring speed is judged to be unqualified, and the buzzer 126 is driven to sound an alarm.

[0123] It can be understood that if the difference between the mass consumption ratio data and the preset consumption ratio threshold is less than the preset difference threshold, and the flow consumption data is within the flow upper limit of material B, then |B ab -B threshold | <c 81 And S b bmax , which means that the casting quality is qualified and the casting of DC support capacitors can continue.

[0124] It should be noted that if the mass of barrel A is 110 M a 、B barrel 120 quality M b If the temperature is lower than the warning level, the buzzer 126 will be driven to sound an alarm and the pouring will be stopped.

[0125] In some embodiments, the method may further include: in response to an alarm record viewing operation, displaying an alarm record generated during the pouring process of the DC support capacitor in an alarm record interface; in response to a pouring waveform viewing operation, displaying a material A consumption waveform and a material B consumption waveform during the pouring process of the DC support capacitor in a historical waveform interface.

[0126] Among them, the A material consumption waveform is used to characterize the changes in the consumption of A material over time or the changes in the unit time consumption of A material over time; the B material consumption waveform is used to characterize the changes in the consumption of B material over time or the changes in the unit time consumption of B material over time.

[0127] ​Specifically, please refer to the client interface of the pouring control device provided in this embodiment. Figure 1a , when you click on the alarm record 150 on the interface, you can switch to the alarm record interface, please refer to Figure 4a , view historical alarm records, such as insufficient A or B material in the barrel, too fast pouring speed, and too large deviation of A and B material ratio. When you click the historical waveform 140 on the interface, you can switch to the historical waveform interface. Please refer to Figure 4b , check the A material consumption waveform and B material consumption waveform. For example, the A material and B material mass consumption waveform, the A material and B material consumption ratio waveform, and the A material and B material consumption speed waveform.

[0128] The present application provides a casting detection device for a DC support capacitor. The casting process of the DC support capacitor includes mixing material A and material B. Figure 5 , the detection device 500 comprises:

[0129] The change data acquisition module 510 is used to acquire the first mass change data of the A material, the second mass change data of the B material, and the flow consumption data of the B material; wherein the second mass change data is obtained by detecting the mass change of the B material barrel 120; the flow consumption data is obtained by detecting the flow rate of the B material flowing through the flow detection module;

[0130] The ratio data determination module 520 determines the mass consumption ratio data between the A material and the B material by using the first mass change data and the second mass change data;

[0131] The casting quality detection module 530 is used to detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material.

[0132] In some embodiments, the casting quality detection module is further used to obtain consumption assessment data of the B material based on the comparison between the second mass change data and the flow consumption data; and to detect the casting quality of the DC support capacitor according to the mass consumption ratio data and the consumption assessment data of the B material.

[0133] In some embodiments, the casting quality detection module is further used to determine whether the casting quality of the DC support capacitor is qualified by using the mass consumption ratio data and the consumption assessment data of the B material when the casting of the DC support capacitor is completed.

[0134] In some embodiments, the casting quality detection module is also used to judge the casting quality of the DC support capacitor using the consumption assessment data of the B material if the mass consumption ratio data meets the first casting qualification condition, so as to detect the casting quality.

[0135] In some embodiments, the casting quality detection module is further used to determine that the casting quality of the DC support capacitor is qualified if the consumption assessment data of the B material meets the second casting qualified condition.

[0136] In some implementations, the pouring quality detection module is also used in one of the following situations:

[0137] If the difference between the mass consumption ratio data and the preset consumption ratio threshold exceeds the preset difference threshold, it is determined that the casting quality of the DC support capacitor is unqualified, and the casting of the DC support capacitor is stopped and an alarm is triggered;

[0138] If the flow consumption data exceeds the flow upper limit of the B material, the pouring speed is determined to be unqualified and an alarm is triggered;

[0139] If the difference between the mass consumption ratio data and the preset consumption ratio threshold is less than the preset difference threshold, and the flow consumption data is within the flow upper limit of the B material, the casting of the DC support capacitor is continued.

[0140] The present application provides a casting detection device for a DC support capacitor. The casting process of the DC support capacitor includes mixing material A and material B. Figure 6 The pouring detection device 600 of the DC support capacitor includes: a first quality detection module 610, a second quality detection module 620, a flow detection module 630 and a controller 640; the first quality detection module 610, the second quality detection module 620 and the flow detection module 630 are respectively connected to the controller 640.

[0141] The first quality detection module 610 is used to detect the quality change of the A material barrel 110 and obtain the first quality change data of the A material.

[0142] The second quality detection module 620 is used to detect the mass change of the B material barrel 120 and obtain the second mass change data of the B material.

[0143] The flow detection module 630 is used to detect the flow change of the B material circuit and obtain the flow consumption data of the B material.

[0144] The controller 640 is used to determine the mass consumption ratio data between material A and material B using the first mass change data and the second mass change data; and detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of material B.

[0145] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0146] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0147] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0148] The present application is described with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box in the flowchart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0149] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0150] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0151] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0152] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0153] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0154] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A casting detection method for a DC support capacitor, characterized in that: The casting process of the DC support capacitor includes mixing material A and material B; the method includes: Obtaining first mass change data of the A material, second mass change data of the B material, and flow consumption data of the B material; wherein the second mass change data is obtained by detecting the mass change of the B material barrel; and the flow consumption data is obtained by detecting the flow rate of the B material flowing through the flow detection module; Determine the mass consumption ratio data between the A material and the B material by using the first mass change data and the second mass change data; The casting quality of the DC support capacitor is detected according to the mass consumption ratio data and / or the flow consumption data of the B material.

2. The method according to claim 1, characterized in that: The detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material includes: Obtain consumption evaluation data of the material B based on a comparison between the second mass change data and the flow consumption data; The casting quality of the DC support capacitor is detected according to the mass consumption ratio data and the consumption evaluation data of the B material.

3. The method according to claim 2, characterized in that The controlling the casting quality of the DC support capacitor according to the mass consumption ratio data and the consumption evaluation data of the B material includes: When the casting of the DC support capacitor is completed, the mass consumption ratio data and the consumption evaluation data of the B material are used to determine whether the casting quality of the DC support capacitor is qualified.

4. The method according to claim 3, characterized in that The DC support capacitor is judged to be casted by the following methods, including: Obtaining a first consumption rated mass of the A material and a second consumption rated mass of the B material; If the first mass change data reaches the first consumption rated mass, or the second mass change data reaches the second consumption rated mass, it is determined that the DC support capacitor is cast.

5. The method according to claim 2 or 3, characterized in that: The detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and the consumption evaluation data of the B material includes: If the mass consumption ratio data meets the first casting qualified condition, the casting quality of the DC support capacitor is judged by using the consumption evaluation data of the B material to detect the casting quality.

6. The method according to claim 5, characterized in that The judging of the casting quality of the DC support capacitor by using the consumption evaluation data of the B material includes: If the consumption evaluation data of the B material meets the second casting qualified condition, it is determined that the casting quality of the DC support capacitor is qualified.

7. The method according to claim 1, characterized in that The flow consumption data of the B material is obtained by the following methods, including: Determine the flow value of the material B flowing through the cross section of the flow detection module per unit time; The flow consumption data is obtained by accumulating the flow value, the density of the B material and the pouring time of the B material; wherein the pouring time of the B material is the time duration for the B material to flow through the flow detection module during the pouring process of the DC support capacitor.

8. The method according to claim 1, characterized in that The detecting the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material includes at least one of the following situations: If the difference between the mass consumption ratio data and the preset consumption ratio threshold exceeds the preset difference threshold, it is determined that the casting quality of the DC support capacitor is unqualified, and the casting of the DC support capacitor is stopped and an alarm is triggered; If the flow consumption data exceeds the flow upper limit of the B material, the pouring speed is determined to be unqualified and an alarm is triggered; If the difference between the mass consumption ratio data and the preset consumption ratio threshold is less than the preset difference threshold, and the flow consumption data is within the flow upper limit of the B material, the casting of the DC support capacitor is continued.

9. The method according to claim 8, characterized in that The method further comprises: In response to the alarm record viewing operation, the alarm record generated during the pouring process of the DC support capacitor is displayed in the alarm record interface; In response to the pouring waveform viewing operation, the A material consumption waveform and the B material consumption waveform during the pouring process of the DC support capacitor are displayed in the historical waveform interface.

10. A pouring detection device for a DC support capacitor, characterized in that: The casting process of the DC support capacitor includes mixing material A and material B; the device includes: A change data acquisition module is used to acquire the first mass change data of the A material, the second mass change data of the B material, and the flow consumption data of the B material; wherein the second mass change data is obtained by detecting the mass change of the B material barrel; and the flow consumption data is obtained by detecting the flow rate of the B material flowing through the flow detection module; a ratio data determination module, which determines the mass consumption ratio data between the A material and the B material by using the first mass change data and the second mass change data; A casting quality detection module is used to detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material.

11. A pouring detection device for a DC support capacitor, characterized in that: The casting process of the DC support capacitor includes mixing material A and material B; the device includes: a first quality detection module, a second quality detection module, a flow detection module and a controller; the first quality detection module, the second quality detection module and the flow detection module are respectively connected to the controller; The first quality detection module is used to detect the mass change of the A material barrel and obtain the first mass change data of the A material; The second quality detection module is used to detect the mass change of the B material barrel and obtain the second mass change data of the B material; The flow detection module is used to detect the flow change of the B material circuit and obtain the flow consumption data of the B material; The controller is used to determine the mass consumption ratio data between the A material and the B material using the first mass change data and the second mass change data; and detect the casting quality of the DC support capacitor according to the mass consumption ratio data and / or the flow consumption data of the B material.

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