Method, device, method of judging and system for measuring pulse amplitude of pulse extraction column

Abstract

The application discloses a kind of measurement method, device, judging method and system of pulse extraction column pulse amplitude.The measurement method includes the following steps: measuring the pulse pressure of two measuring points on the pulse leg of pulse extraction column, and the two measuring points are arranged in upper and lower interval.According to the pulse pressure data at the two measuring points, the pulse frequency and the time difference of the pressure change at the two measuring points are obtained.The interval between the two measuring points is obtained.According to the interval between the two measuring points, the time difference and the pulse frequency, the pulse amplitude of the pulse extraction column is calculated.The measurement method can conveniently and quickly measure the pulse amplitude parameter of pulse extraction column.

Description

Technical Field

[0001] This invention relates to a method and device for measuring the pulse amplitude of a pulse extraction column, and a method and system for determining the operating status of the pulse extraction column. Background Technology

[0002] Non-contact measurement technology is the most critical thermal parameter measurement technology in post-processing engineering applications. In the pilot plants designed and built in my country in the 1990s, purging instruments were widely used to solve the detection problems of parameters such as liquid level, liquid level signal, density, interface, and column weight of highly radioactive liquids, which were unanimously affirmed and achieved good detection results. However, the measurement of pulse amplitude has not yielded satisfactory results.

[0003] Pulse extraction columns are key equipment in spent fuel reprocessing. Pulse amplitude is a crucial technical parameter of pulse extraction columns; changes in pulse frequency, pulse amplitude, and column weight directly reflect the operating status of the column, allowing for the determination of whether it is operating normally or experiencing flooding. This can be addressed by adjusting the pulse amplitude. Therefore, accurate and rapid measurement of the pulse amplitude of pulse extraction columns is essential for the safe operation of nuclear chemical reprocessing processes.

[0004] Currently, the pilot plant uses ultrasonic detection technology to measure the liquid level changes in the pulse leg. The measurement principle involves a multi-point level gauge that uses acoustic signal attenuation to determine the presence of liquid in the pulse leg at each measuring point, thereby calculating the pulse amplitude. This measurement method has certain limitations. Because the ultrasonic probe is located inside the equipment room, it is exposed to radiation after operation, leading to rapid malfunctions and significantly complicating maintenance. Furthermore, the limited number of cables running through the equipment room restricts the number of ultrasonic probes, directly impacting the measurement range and accuracy, and preventing the measurement from covering the range of liquid level fluctuations caused by pulse amplitude.

[0005] In addition, in the design of spent fuel reprocessing projects, the measurement of pulse amplitude in pulse extraction columns mainly employs the air blowing method to measure the column weight signal. Then, by analyzing and calculating the waveform, the pulse amplitude and pulse frequency can be directly obtained. The specific principle of this method is as follows: based on the obtained effective column weight waveform, the cumulative number of peaks in the column weight signal over a period of time is calculated, thus obtaining the pulse frequency within the pulse extraction column; using the peak area within one cycle of the column weight sinusoidal signal, combined with the extraction column structural parameters and continuous phase characteristic parameters, the pulse amplitude within the pulse extraction column can be calculated.

[0006] While this method is feasible, it requires obtaining a relatively accurate waveform of the pulse column, as well as conducting debugging experiments in the early stages to obtain the fixed parameters needed for the calculation. Furthermore, the calculation formula is quite complex and difficult to implement. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art by providing a method, apparatus, judgment method and system for measuring the pulse amplitude of a pulse extraction column. This measurement method can conveniently and quickly measure the pulse amplitude parameters of the pulse extraction column.

[0008] According to an embodiment of the first aspect of the present invention, a method for measuring the pulse amplitude of a pulse extraction column is provided, comprising the following steps:

[0009] S1: Measure the pulse pressure at two measuring points on the pulse leg of the pulse extraction column, with the two measuring points arranged vertically at intervals.

[0010] S2: Based on the pulse pressure data at the two measuring points, the pulse frequency and the time difference of the pressure change at the two measuring points are obtained;

[0011] S3: Obtain the distance between the two measuring points;

[0012] S4: Calculate the pulse amplitude of the pulse extraction column based on the distance, time difference, and pulse frequency between the two measurement points.

[0013] Preferably, step S1 specifically includes:

[0014] Air is blown into the two measuring points through two air blowing ports respectively. When the pulse extraction column generates a pulse, the air pressure at the air blowing port changes with the pulse frequency.

[0015] The air pressure at the two air inlets is measured, which is the pulse pressure at the two measuring points.

[0016] Preferably, step S2 specifically includes:

[0017] Based on the pulse pressure data at the two measuring points, two pressure curves were plotted respectively.

[0018] Based on the two pressure curves, the pulse frequency and the phase difference between the two pressure curves are obtained. The phase difference is the time difference of the pressure change at the two measuring points.

[0019] Preferably, step S4 specifically includes:

[0020] The pulse amplitude A is calculated using the following formula: A = h / (fΔt)

[0021] Where h is the distance between measuring points, f is the pulse frequency, and Δt is the time difference.

[0022] Preferably, the distance between the two measuring points is 100~200mm.

[0023] According to an embodiment of a second aspect of the present invention, a method for determining the operating status of a pulse extraction column is provided, comprising the following steps:

[0024] Based on the above method for measuring the pulse amplitude of the pulse extraction column, the pulse amplitude of the pulse extraction column is measured.

[0025] The operating status of the pulse extraction column is determined based on the pulse amplitude of the pulse extraction column.

[0026] According to a third aspect of the present invention, a device for measuring the pulse amplitude of a pulse extraction column is provided, comprising a pressure module, a processing module, a spacing module, and a calculation module. The pressure module is used to measure the pulse pressure at two measuring points on the pulse leg of the pulse extraction column, the two measuring points being arranged vertically at an interval. The processing module, electrically connected to the pressure module, is used to derive the pulse frequency and the time difference of the pressure change at the two measuring points based on the pulse pressure data at the two measuring points. The spacing module is used to obtain the spacing between the two measuring points. The calculation module, electrically connected to both the spacing module and the processing module, is used to calculate the pulse amplitude of the pulse extraction column based on the spacing between the two measuring points, the time difference, and the pulse frequency.

[0027] Preferably, the pressure module includes an air blowing unit and a pressure measuring unit; the air blowing unit is used to blow air to the two measuring points through the two air blowing ports respectively, and when the pulse extraction column generates a pulse, the air pressure at the air blowing port changes with the pulse frequency; the pressure measuring unit is used to measure the air pressure at the two air blowing ports, which is the pulse pressure at the two air blowing ports.

[0028] Preferably, the processing module includes an analysis unit and a control unit; the analysis unit is electrically connected to the pressure measuring unit and is used to plot two pressure curves based on the pulse pressure data at the two measuring points; the control unit is used to determine the pulse frequency and the phase difference between the two pressure curves based on the two pressure curves, wherein the phase difference is the time difference of the pressure change at the two measuring points.

[0029] Preferably, the calculation module includes an amplitude calculation unit; the amplitude calculation unit is electrically connected to the control unit and the spacing module, and is used to calculate the pulse amplitude A according to the following formula: A=h / (fΔt), where h is the spacing between the measuring points, f is the pulse frequency, and Δt is the time difference.

[0030] According to an embodiment of a fourth aspect of the present invention, a system for determining the operating status of a pulse extraction column is provided, comprising the aforementioned pulse amplitude measuring device and determining module for the pulse extraction column. The pulse amplitude measuring device is used to measure the pulse amplitude of the pulse extraction column. The determining module is electrically connected to the pulse amplitude measuring device and is used to determine the operating status of the pulse extraction column based on the pulse amplitude of the pulse extraction column.

[0031] The method for measuring the pulse amplitude of a pulse extraction column in this invention uses a blowing instrument and a pressure transmitter to measure the pulse pressure at two measuring points. Data analysis is then performed to obtain the pulse frequency in the pulse leg and the time difference between the pressure changes at the two measuring points. Next, the distance parameter between the two measuring points is measured, and the pulse amplitude A can be calculated using the formula A=h / (fΔt). Therefore, this measurement method only requires calculating three parameters to determine the pulse amplitude A of the pulse extraction column, enabling convenient and rapid measurement of the pulse amplitude. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the pulse amplitude measuring device for the pulse extraction column in some embodiments of the present invention;

[0033] Figure 2a These are pressure curves at the y-1 measuring point in some embodiments of the present invention;

[0034] Figure 2b These are pressure curves at the y-2 measuring point in some embodiments of the present invention;

[0035] Figure 3 This is a schematic diagram of the pressure curves at measuring points y-1 and y-2 on the same time axis in some embodiments of the present invention;

[0036] Figure 4 This is a flowchart of a method for measuring the pulse amplitude of a pulse extraction column in some embodiments of the present invention.

[0037] In the diagram: 1 - Pulse extraction column, 2 - Pulse leg. Detailed Implementation

[0038] The technical solutions of the invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of the invention.

[0039] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, each unit or module may correspond to only one entity structure, or may be composed of multiple entity structures, or multiple units or modules may be integrated into one entity structure; the units or modules may be implemented by software or by hardware, for example, the units or modules may be located in a processor.

[0041] In the description of this invention, unless otherwise specified, the functions and steps marked in the flowcharts and block diagrams of this invention may occur in a different order than that marked in the accompanying drawings.

[0042] Example 1

[0043] Please see Figure 1 and Figure 4 This invention discloses a method for measuring the pulse amplitude of a pulse extraction column, comprising the following steps:

[0044] S1: Measure the pulse pressure at two measuring points on the pulse leg 2 of the pulse extraction column 1. The two measuring points are arranged vertically at intervals.

[0045] S2: Based on the pulse pressure data at the two measuring points, the pulse frequency and the time difference of pressure change at the two measuring points are obtained;

[0046] S3: Obtain the distance between two measuring points;

[0047] S4: Calculate the pulse amplitude of pulse extraction column 1 based on the distance between the two measuring points, the time difference, and the pulse frequency.

[0048] Before describing the measurement method in this embodiment, it should be noted that the pulse extraction column 1 is an important extraction device in the nuclear chemical reprocessing process. When it is running, pulses are needed to extract the two-phase liquid in the column.

[0049] Furthermore, the pulse amplitude of the pulse extraction column 1 is a crucial post-processing parameter, a primary variable affecting its stable operation. Many variables influence the pulse amplitude during pulse generation in the pulse extraction column 1, including pulse frequency, pulse kinetic air pressure, and the resistance coefficient of the pulse extraction column 1. The resistance coefficient includes structural resistance and resistance caused by varying oil-to-water ratios in the feed solution. Within the same pulse extraction column 1, adjusting the feed solution composition while maintaining constant pulse kinetic air pressure and pulse frequency will slightly affect the pulse amplitude. However, as this effect gradually increases, it transforms into a qualitative change, causing the pulse extraction column 1 to deviate from its stable operating state and resulting in flooding. To prevent flooding, the pulse amplitude of the pulse extraction column 1 must be constantly monitored.

[0050] Because pulse extraction column 1 is a radioactive liquid extraction device installed indoors, it cannot be directly inspected and measured. Therefore, non-contact measurement methods are required, which causes many inconveniences in measuring the pulse amplitude. Currently, the air blowing method is the best solution for measuring the pulse amplitude of pulse extraction column 1. The air blowing method uses a non-contact air blowing measuring instrument. The air blowing measuring instrument consists of three parts: an air blowing pipe, an air blowing device, and a differential pressure gauge. It can measure parameters such as liquid level, liquid level signal, density, interface, and column weight in various storage tanks. Its principle is to measure the pressure difference between the two air blowing pipes and calculate the corresponding detection parameters.

[0051] Traditional air-blowing methods primarily utilize volume conversion to measure the pulse amplitude within the pulse extraction column 1. Specifically, the pulse amplitude of the feed liquid within the pulse extraction column 1 and the pulse amplitude of the feed liquid within the pulse leg 2 can be converted based on volume ratio. Therefore, by measuring the amplitude of the feed liquid within the pulse leg 2, the pulse amplitude of the pulse extraction column 1 can be calculated. However, this measurement method involves numerous parameters, cumbersome measurement steps, and complex calculation formulas, making it difficult to implement and prone to errors.

[0052] In this embodiment, the pulse amplitude is measured by using a blowing instrument and a pressure transmitter to measure the pulse pressure at two different measuring points on the pulse leg 2 of the pulse extraction column. For example... Figure 1 As shown, the two pressure tapping points are respectively set at... Figure 1 At the labels y-1 and y-2, the two measuring points are set vertically. Two pressure curves are obtained through data analysis. Based on the time difference between these two pressure curves, the pulse frequency, and the distance between the two measuring points, the pulse amplitude is calculated.

[0053] Specifically, the calculation formula used in this method is: A = h / (fΔt). Where A is the pulse amplitude; h is the distance between the two measuring points; Δt is the time difference of pressure change at the two measuring points; and f is the pulse frequency.

[0054] Compared to the previous blowing method, the pulse amplitude measurement method of the pulse extraction column in this embodiment only requires measuring three parameters, which can more conveniently and quickly measure the pulse amplitude in the pulse extraction column 1.

[0055] It should be noted that before proceeding to step S1, the locations of two measuring points need to be selected. These two measuring points are located on the pulse leg of the pulse extraction column, specifically at a height roughly equivalent to the connection point between the lower enlargement section and the column body. Specifically, the two measuring points are arranged vertically, with a spacing of 100-200 mm. Preferably, the spacing between the two measuring points is 200 mm. Furthermore, the measuring points must be within the aqueous phase range when the pulse leg is pulsating.

[0056] To detect the pulse pressure at the two measuring points, two air inlets need to be installed in the lower half of the pulse leg 2 of the pulse extraction column 1, with each inlet corresponding to one of the two measuring points. The two air inlets are spaced a certain distance apart, and the distance between the two air inlets is less than the amplitude of one pulse. The spacing between the two air inlets, i.e., the spacing between the two measuring points, is 100~200mm.

[0057] In this embodiment, step S1: Measure the pulse pressure at two measuring points on the pulse leg 2 of the pulse extraction column 1, with the two measuring points arranged vertically at intervals. Specifically, this includes:

[0058] Air is blown into the two measuring points through two air blowing ports. When the pulse extraction column 1 generates a pulse, the air pressure at the air blowing port changes with the pulse frequency.

[0059] The air pressure at the two air inlets is measured, which is the pulse pressure at the two measuring points.

[0060] Furthermore, to facilitate the acquisition of pressure at two measuring points on the pulse leg 2 of the pulse extraction column 1, a non-contact measuring instrument is used to collect the pressure at the two measuring points. The non-contact measuring instrument consists of an air blowing device and two pressure transmitters. The air blowing device is a two-tube type, with two air blowing pipes connected to two air blowing ports on the pulse leg 2, used to blow air into the two ports. The air blowing flow rate of the air blowing device is 0~10L / h, and it is equipped with an air source pipe filter pressure reducing valve (0~0.6MPa). No air blowing pipe pressure regulating valve is installed inside the air blowing device. Preferably, the air blowing device can be the UCA-132G from the UCA series of the Shanghai Guanghua Instrument Factory. During the actual measurement of pulse amplitude, the air blowing flow rate is controlled at 4L / h, and the air blowing pressure is adjusted to 0.2MPa.

[0061] In addition, two pressure transmitters are used to measure the air pressure at the two air inlets. The instrument measurement range of the pressure transmitters is 0~10 kPa, the output current is 4~20 mA AC, and the required instrument signal output frequency is 20 times / s. Preferably, the pressure transmitter can be the MV2000T intelligent pressure transmitter V15753-HC4BE from Shanghai Weiertech Instruments Co., Ltd.

[0062] It should be noted that during the pulse extraction column 1, the blowing instrument's readings are severely affected, causing the pressure transmitter readings to jump continuously with the pulse frequency, making it impossible to obtain accurate process parameters. This problem can be solved by adjusting the installation position of the blowing ports. Specifically, by setting the height of the two blowing ports (i.e., the height of the two measuring points) at a height equivalent to the connection between the lower enlarged section and the column body of the pulse extraction column 1, the pressure transmitter readings can be prevented from oscillating during pulse extraction. More specifically, as... Figure 1As shown, the two air inlets are located at two measuring points, that is, respectively set at... Figure 1 The labels for y-1 and y-2 in the diagram.

[0063] Of course, the problem of the pressure transmitter being inaccurate when the pulse leg 2 is making pulses can also be solved by adding smoothing devices such as gas tanks.

[0064] It should also be noted that when pulse leg 2 pulses, there is a time difference in the pressure change at the two air outlets. This time difference is related to the pulse amplitude, pulse frequency, and the distance between the two air outlets. In previous air-blowing methods for measuring pulse amplitude, an air-blowing device was typically used in conjunction with a differential pressure transmitter to measure pressure parameters. However, the differential pressure transmitter measures the pressure difference between the two air outlets, which cannot reflect the time difference in pressure change between the two air outlets. In this embodiment, two pressure transmitters are used to detect the pressure at the two air outlets respectively, and the detection curves are obtained, which can measure the time difference in pressure change between the two air outlets and the pulse pressure.

[0065] In this embodiment, step S2: Based on the pulse pressure data at the two measuring points, the pulse frequency and the time difference of pressure changes at the two measuring points are obtained. Specifically, this includes:

[0066] Based on the pulse pressure data at the two measuring points, two pressure curves were plotted respectively.

[0067] Based on the two pressure curves, the pulse frequency f and the phase difference between the two pressure curves are obtained. The phase difference is the time difference Δt between the pressure changes at the two measuring points.

[0068] Specifically, the pressure values ​​at two measuring points on pulse leg 2 are obtained through an air blowing device and two pressure transmitters. The pressure transmitters are also connected to the control system to transmit the collected pressure data. The control system then plots two pressure curves based on the collected pulse pressure data. (Details follow...) Figure 2a and Figure 2b As shown, the two pressure curves are the waveform curves of air pressure changing with time at two measuring points under the condition that the pulse leg generates a pulse. The horizontal axis represents time (unit: s), and the vertical axis represents air pressure (unit: MPa).

[0069] like Figure 3 As shown, the control system derives the pulse frequency f and the phase difference between the two pressure curves. The control system requires two or more analog input points, and its signal acquisition frequency must be greater than 50 times / s. Preferably, the control system can use the NI USB-6001 high-speed data acquisition card.

[0070] It can be seen that the two pressure curves have the same waveform on the same time axis, but there is a phase difference between them. The phase difference is the time difference of the pressure change at the two measuring points, which can be calculated to obtain the time difference Δt. The pulse frequency f is the time of one sine wave of the waveform curve.

[0071] In this embodiment, step S4: Calculate the pulse amplitude of the pulse extraction column 1 based on the distance between the two measuring points, the time difference, and the pulse frequency. Specifically, this includes:

[0072] The pulse amplitude A is calculated using the following formula: A = h / fΔt, where h is the distance between measurement points, f is the pulse frequency, and Δt is the time difference.

[0073] Specifically, the derivation of this calculation formula is as follows: The pulse amplitude A (unit: mm) is equal to the distance the liquid travels in one pulse within the pulse leg 2, which is also the distance traveled by the pressure head (i.e., the gas-liquid interface, where the pressure is at its maximum). The velocity of the pressure head is v = s / t. v should be a variable, but here it is simplified to a constant. Within the same pulse extraction column 1, i.e., with the same pulse environment, v = pulse amplitude A × pulse frequency f. Simultaneously, v = distance between two pressure measuring points h / time difference between the two curves Δt. Therefore, the formula can be derived: Pulse amplitude A × pulse frequency f = distance between two pressure measuring points h / time difference Δt of pressure change at the blowing pipe opening. That is: A × f = h / Δt. Finally, we can obtain: Pulse amplitude A = h / (fΔt).

[0074] By analyzing the pressure curves corresponding to the two measuring points, we can obtain the pulse frequency f (the time of one sine wave) and the time difference Δt between the pressure values ​​at the two air inlets, which is the phase difference within the same frequency range of the two sets of curves. Substituting the distance h between the two measuring points, the time difference Δt, and the pulse frequency f into the calculation formula: A=h / (fΔt), we can obtain the pulse amplitude A.

[0075] In summary, the method for measuring the pulse amplitude of the pulse extraction column can conveniently and quickly measure the pulse amplitude of the pulse extraction column 1.

[0076] Example 2

[0077] This invention also discloses a method for determining the operating status of a pulse extraction column, comprising the following steps:

[0078] According to the method for measuring the pulse amplitude of the pulse extraction column in Embodiment 1, the pulse amplitude A of the pulse extraction column 1 is measured;

[0079] The operating status of pulse extraction column 1 is determined by the pulse amplitude A of pulse extraction column 1.

[0080] Specifically, the pulse amplitude measurement method described above uses a blowing instrument and a pressure transmitter to measure the pulse pressure at two different measuring points on the pulse leg 2 of the pulse extraction column. Data analysis yields two pressure curves, and the time difference Δt, pulse frequency f, and distance h between the two measuring points are obtained. The pulse amplitude A is then calculated using the formula: A = h / (fΔt).

[0081] Then, based on the pulse amplitude, pulse frequency, and column weight parameters, it is determined whether pulse extraction column 1 is in normal operation or flooding state. The column weight parameters can be obtained using existing methods and will not be elaborated upon here.

[0082] This method can conveniently and quickly obtain the pulse amplitude of the pulse extraction column 1, and thus more quickly determine the operating status of the pulse extraction column 1.

[0083] Example 3

[0084] Please see Figure 1 The present invention also discloses a device for measuring the pulse amplitude of a pulse extraction column, comprising: a pressure module, a processing module, a spacing module and a calculation module.

[0085] The pressure module measures the pulse pressure at two points on the pulse leg 2 of the pulse extraction column 1, with the two points spaced vertically apart. The processing module, electrically connected to the pressure module, calculates the pulse frequency and the time difference between the pressure changes at the two points based on the pulse pressure data. The spacing module obtains the distance between the two points. The calculation module, electrically connected to both the spacing module and the processing module, calculates the pulse amplitude of the pulse extraction column 1 based on the distance between the two points, the time difference, and the pulse frequency.

[0086] Specifically, this measuring device measures the pulse pressure at two different measuring points on the pulse leg 2 of the pulse extraction column using a non-contact instrument, namely a pneumatic instrument with a pressure transmitter. For example... Figure 1 As shown, the two pressure tapping points are respectively set at... Figure 1 At the labels y-1 and y-2, the two measuring points are set vertically at an interval. Two pressure curves are obtained through data analysis. Based on the time difference between these two pressure curves, the pulse frequency, and the distance between the two measuring points, the pulse amplitude is calculated. This measuring device can conveniently and quickly measure the pulse amplitude in the pulse extraction column 1.

[0087] like Figure 1 As shown, in this embodiment, the pressure module includes an air blowing unit and a pressure measuring unit. The air blowing unit blows air to two measuring points through two air blowing ports. When the pulse extraction column 1 generates a pulse, the air pressure at the air blowing port changes with the pulse frequency. The pressure measuring unit measures the air pressure at the two air blowing ports, which is the pulse pressure at the two air blowing ports.

[0088] Specifically, the air blowing unit is a two-pipe type air blowing device, with two air blowing pipes connected to two air blowing ports on the pulse leg 2, respectively, for blowing air into the two air blowing ports. The air blowing flow rate of the air blowing device is 0~10L / h, and it is equipped with an air source pipe filter pressure reducing valve (0~0.6MPa). No air blowing pipe pressure regulating valve is installed inside the air blowing device. Preferably, the air blowing unit can be the UCA-132G from the UCA series of air blowing devices manufactured by Shanghai Guanghua Instrument Factory.

[0089] In addition, the pressure measurement unit consists of two pressure transmitters. Each transmitter measures the air pressure at one of the two air inlets. The pressure transmitters have a measurement range of 0~10 kPa, an output current of 4~20 mA AC, and a required signal output frequency of 20 times / s. Preferably, the pressure transmitters used are the Shanghai Weiertech Instruments Co., Ltd. MV2000T intelligent pressure transmitter V15753-HC4BE.

[0090] It should be noted that when the pulse extraction column 1 pulses, there is a time difference Δt in the pressure change at the two blowing tube openings. This time difference Δt is closely related to the pulse amplitude, pulse frequency, and the distance between the two blowing tube openings. Previous blowing instruments measured parameters using a blowing device in conjunction with a differential pressure transmitter, which measures the pressure difference between the two blowing tubes. However, the pressure difference does not reflect the time difference in pressure change between the two blowing tube openings. To solve this problem, in this embodiment, a pressure transmitter is used instead of a differential pressure transmitter to measure the pulse pressure at the two measuring points.

[0091] like Figure 2a and Figure 2b As shown, in this embodiment, the processing module includes an analysis unit and a control unit. The analysis unit is electrically connected to the pressure measurement unit and is used to plot two pressure curves based on the pulse pressure data at the two measurement points. The control unit is used to determine the pulse frequency and the phase difference between the two pressure curves based on the two pressure curves; the phase difference is the time difference of the pressure change at the two measurement points. Specifically, the processing module can use the NI USB-6001 fast data acquisition card.

[0092] In this embodiment, the calculation module includes an amplitude calculation unit. The amplitude calculation unit is electrically connected to the control unit and the spacing module, and is used to calculate the pulse amplitude A according to the following formula: A=h / (fΔt), where h is the spacing between the measuring points, f is the pulse frequency, and Δt is the time difference.

[0093] Specifically, the calculation module can be a computer device, and the spacing module can be the computer's input module. After the staff actually measures the distance between two measuring points, they input the distance between the measuring points into the computer device through the input module. The calculation module has a program set up to calculate the pulse amplitude, which can automatically calculate the pulse amplitude according to the calculation formula.

[0094] In summary, the pulse amplitude measuring device of this pulse extraction column can conveniently and quickly measure the pulse amplitude of pulse extraction column 1.

[0095] Example 4

[0096] The present invention also discloses a system for judging the operating status of a pulse extraction column, including the pulse amplitude measuring device and the judgment module of the pulse extraction column in Example 2.

[0097] The pulse amplitude measuring device of the pulse extraction column is used to measure the pulse amplitude of the pulse extraction column 1. The judgment module is electrically connected to the pulse amplitude measuring device of the pulse extraction column and is used to judge the operating status of the pulse extraction column 1 based on the pulse amplitude of the pulse extraction column 1.

[0098] Specifically, the judgment module can be a computer device that stores the column weight parameters of the pulse extraction column 1. The pulse amplitude measuring device can transmit the pulse amplitude and pulse frequency to the judgment module, which determines whether the pulse extraction column 1 is in a normal operating state based on the column weight parameters, pulse frequency, and pulse amplitude.

[0099] Therefore, this judgment system can conveniently and quickly determine the operating status of the pulse extraction column 1.

[0100] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for measuring the pulse amplitude of a pulse extraction column, characterized in that, Includes the following steps: S1: Measure the pulse pressure at two measuring points on the pulse leg (2) of the pulse extraction column (1), with the two measuring points arranged vertically at intervals; S2: Based on the pulse pressure data at the two measuring points, the pulse frequency and the time difference of the pressure change at the two measuring points are obtained; Step S2 specifically includes: drawing two pressure curves based on the pulse pressure data at the two measuring points; Based on the two pressure curves, the pulse frequency and the phase difference between the two pressure curves are obtained. The phase difference is the time difference of the pressure change at the two measuring points. S3: Obtain the distance between the two measuring points; S4: The pulse amplitude of the pulse extraction column (1) is calculated based on the distance, time difference and pulse frequency between the two measurement points.

2. The method for measuring the pulse amplitude of a pulse extraction column according to claim 1, characterized in that, Step S1 specifically includes: Air is blown into the two measuring points through two air blowing ports respectively. When the pulse extraction column (1) generates a pulse, the air pressure at the air blowing port changes with the pulse frequency. The air pressure at the two air inlets is measured, which is the pulse pressure at the two measuring points.

3. The method for measuring the pulse amplitude of a pulse extraction column according to claim 1, characterized in that, Step S4 specifically includes: The pulse amplitude A is calculated using the following formula: A = h / (fΔt); Where h is the distance between measuring points, f is the pulse frequency, and Δt is the time difference.

4. The method for measuring the pulse amplitude of a pulse extraction column according to claim 1, characterized in that, The distance between the two measuring points is 100~200mm.

5. A method for determining the operating status of a pulse extraction column, characterized in that, Includes the following steps: The method for measuring the pulse amplitude of a pulse extraction column according to any one of claims 1-4 measures the pulse amplitude of the pulse extraction column. The operating status of the pulse extraction column is determined based on the pulse amplitude of the pulse extraction column.

6. A device for measuring the pulse amplitude of a pulse extraction column, characterized in that, include: Pressure module, processing module, spacing module, and calculation module; The pressure module is used to measure the pulse pressure at two measuring points on the pulse leg (2) of the pulse extraction column (1), and the two measuring points are arranged vertically at intervals. The processing module is electrically connected to the pressure module and is used to derive the pulse frequency and the time difference of the pressure change at the two measuring points based on the pulse pressure data at the two measuring points. The processing module includes an analysis unit and a control unit; the analysis unit is used to plot two pressure curves based on the pulse pressure data at the two measuring points; the control unit is used to calculate the pulse frequency and the phase difference between the two pressure curves based on the two pressure curves, and the phase difference is the time difference of the pressure change at the two measuring points. The spacing module is used to obtain the spacing between the two measuring points; The calculation module is electrically connected to the spacing module and the processing module respectively, and is used to calculate the pulse amplitude of the pulse extraction column (1) based on the spacing, time difference and pulse frequency between the two measurement points.

7. The measuring device for pulse amplitude of a pulse extraction column according to claim 6, characterized in that, The pressure module includes an air blowing unit and a pressure measuring unit; The blowing unit is used to blow air to the two measuring points through the two blowing ports respectively. When the pulse extraction column (1) generates a pulse, the air pressure at the blowing port changes with the pulse frequency. The pressure measuring unit is used to measure the air pressure at the two air inlets, which is the pulse pressure at the two air inlets.

8. The measuring device for pulse amplitude of a pulse extraction column according to claim 6, characterized in that, The calculation module includes an amplitude calculation unit; The amplitude calculation unit is electrically connected to the control unit and the spacing module, and is used to calculate the pulse amplitude A according to the following formula: A=h / (fΔt), where h is the spacing between the measuring points, f is the pulse frequency, and Δt is the time difference.

9. A system for determining the operating status of a pulse extraction column, characterized in that, Includes the measuring device and judging module for the pulse amplitude of the pulse extraction column as described in any one of claims 6-8; The device for measuring the pulse amplitude of the pulse extraction column (1) is used to measure the pulse amplitude of the pulse extraction column (1); The judgment module is electrically connected to the pulse amplitude measuring device of the pulse extraction column (1) and is used to judge the operating status of the pulse extraction column (1) based on the pulse amplitude of the pulse extraction column (1).

Images