High-speed storage apparatus for hydraulic shock data on water level and flow rate

Abstract

The present invention relates to a high-speed storage apparatus for hydraulic shock data on water level and flow rate, which detects fluctuations in the water level and flow rate of a pipeline through a sensor so as to store per-second sampled data in data blocks of an internal storage device in real time, and, in particular, separately stores raw data in a separate data block of the internal storage device for a predetermined period of time before and after an event occurs because of a hydraulic shock, thereby ensuring big data about changes in sensor detection signals, and thus a stable pipeline can be designed in consideration of hydraulic shock.

Description

High-speed storage device for water hammer data on water level and flow rate

[0001] The present invention relates to a high-speed storage device for water hammer data on water level and flow rate, which detects fluctuations in the water level and flow rate of a pipeline by a sensor, stores real-time sampled data per second in a data block of an internal storage device, and, in particular, when an event due to water hammer occurs, stores raw data separately in a separate data block of the internal storage device for a certain period of time before and after the event, thereby securing big data on fluctuations in the detection signal of the sensor, and thereby enables stable pipeline design taking water hammer into account.

[0002] In addition, the present invention relates to a high-speed storage device for water level and flow rate data, which can externally review or analyze the amount of data change in a pipeline by having a removable external storage device in the system or an external server device that can separately store sensor data wirelessly.

[0003] During fluid flow, when the flow rate or water level in a pipeline changes, the water head itself changes rapidly. For example, when a valve is suddenly operated, causing a change in flow rate, when a valve is suddenly closed or opened, or when a pump is started or stopped, rapid pressure fluctuations occur. This phenomenon is called "water hammer."

[0004] Water hammer occurs when a valve abruptly blocks the flow of water through a pipe. This rapid rise in water pressure creates surging pressure, which causes water hammer waves to travel back and forth within the pipe, generating noise and vibration. This noise and vibration are transmitted through the pipe to surrounding structures, causing water hammer, a shock wave phenomenon within the pipe. This pressure fluctuation becomes even more severe when liquid is supplied within a limited cross-section, such as a pipe.

[0005] In other words, when there is a change in flow velocity, such as when a valve in a flowing pipeline is suddenly closed or a pump is stopped, the kinetic energy of the fluid is converted into pressure energy, and this pressure change is transmitted at the speed of propagation. When this pressure wave returns, the sign of the pressure is reversed, and it continues to reciprocate within the pipeline, causing water hammer.

[0006] The above water hammer effect becomes more severe as the flow rate increases and the change time of the flow rate decreases. In severe cases, the negative pressure becomes lower than the saturated vapor pressure of water, forming a vapor cavity, which may cause water column separation or pipe buckling.

[0007] The above water hammer phenomenon causes five representative problems.

[0008] First, the pipeline is damaged by buckling, etc. due to pressure drop.

[0009] Second, pipelines, pumps, and valves are damaged by pressure increase.

[0010] Third, if countermeasures to prevent backflow, such as countermeasure valves, are inadequate, mechanical accidents may occur in the pump and driving device due to counterflow and reversal.

[0011] Fourth, pressure fluctuations caused by the operation of the air valve or the water separation phenomenon cause significant pressure increases and decreases, and generate noise that causes pipes and equipment to vibrate.

[0012] At this time, the above column separation phenomenon means that in addition to the flow of liquid within a limited pipeline, when the pump stops due to a breakdown or power outage, the liquid rapidly boils due to a pressure drop, creating an empty space within the liquid, and a large pressure is generated at the moment this empty space disappears.

[0013] Fifth, it causes malfunctions in pump systems that operate under pressure.

[0014] Accordingly, in order to reduce the above water hammer phenomenon, the industry has conducted continuous research and development and proposed various types of water hammer prevention systems. However, these are only through mechanical changes, and a water hammer prevention system that automatically recognizes the water hammer phenomenon and responds to it has not been proposed.

[0015] In particular, in the conventional system, changes in water pressure, water level, or flow rate in the pipeline are monitored in real time, and the detected data is stored at intervals of several seconds or one minute, but actual water hammer monitoring is difficult, and as pipe fatigue increases due to large or small fluctuations in the pipeline, cast iron pipe joint detachment and valve damage occur, so the need for accident prevention through real-time water hammer monitoring has been demanded.

[0016] The present invention has been devised to solve such problems, and the purpose of the present invention is to provide a high-speed storage device for water level and flow rate data, which detects the water level and flow rate fluctuations in a pipeline by a sensor, stores real-time sampled data per second in a data block of an internal storage device, and, in particular, when an event due to water hammer occurs, stores raw data in a separate data block of the internal storage device for a certain period of time before and after the event occurs, thereby securing big data on the fluctuations in the sensor's detection signal, and thereby enables stable pipeline design taking water hammer into account.

[0017] In addition, another purpose is to provide a high-speed storage device for water level and flow rate data that can externally review or analyze the amount of data change in a pipeline by equipping the system with a removable external storage device or an external server device that can separately store sensor data wirelessly.

[0018] The water hammer data storage device according to the present invention is characterized in that a detection signal of a sensor including at least one of a rotation speed sensor that detects the rotation speed of a pump that is linked according to the flow rate flowing into a main pipe; a water level sensor that detects the water level of an air chamber; a flow rate sensor that detects the real-time flow rate transported through the main pipe; and a valve opening rate sensor that detects the flow rate passing through the main pipe is transmitted to a control panel, and the control panel stores sampling data among the detection signals of the sensors in real time in an internal storage device at a rate of 1 to 10 per second, and at the same time, when an event occurs in which the detection signal of the sensor is detected to be higher than a set value, it recognizes that a water hammer has occurred and stores raw data at a rate of 100 to 10,000 per second for a certain period of time before and after the occurrence of the event in the internal storage device.

[0019] The high-speed storage device for water hammer data on water level and flow rate according to the present invention stores real-time sampling data in a data block of an internal storage device by sensors installed at multiple locations in a pipeline, and when an event occurs in which the real-time data deviates from a set value, stores raw data in a separate data block of the internal storage device to accurately determine real-time changes in the pipeline and whether or not there is water hammer, and generates a control signal to prevent water hammer through a control panel, thereby having the effect of preventing water hammer in advance.

[0020] Additionally, it has an internal storage device and a removable external storage device to store the continuous data changes of the system, which facilitates data analysis for system improvement.

[0021] Figure 1 is a schematic diagram of a high-speed storage device for water level and flow rate data according to the present invention.

[0022] Figure 2 is a configuration diagram of a high-speed storage device for water level and flow rate data according to the present invention.

[0023] Figure 3 is an example of a graph of water level or flow rate data that changes over time in the present invention.

[0024] Figure 4 is a schematic diagram schematically showing a data storage method in the internal storage device of the present invention.

[0025] Figure 5 is a flow chart of the operation method of a high-speed storage device for water level and flow rate data according to the present invention.

[0026] A preferred embodiment of the present invention is described in detail with reference to the attached drawings.

[0027] The high-speed storage device for water level and flow rate data according to the present invention is proposed to enable efficient monitoring of water level by detecting real-time fluctuations in the main pipe (10) by a sensor (40) and storing the detected data in an internal storage device (53), as shown in FIGS. 1 and 2.

[0028] As one embodiment of the present invention, as shown in FIG. 1, a main pipe (10) equipped with a pump (11) and a shut-off valve (12) is connected to an auxiliary pipe (20) equipped with a control valve (21), and the main pipe (10) is connected to an air chamber (30) that reduces water hammer through a connecting pipe (31) to prevent water hammer in a pipeline.

[0029] A sensor (40) for detecting water level and flow rate is installed in at least one of the main pipe (10) or the auxiliary pipe (20) equipped with the control valve (21) or the air chamber (30), and the real-time detection signal of the sensor (40) is transmitted to the control panel (50), and the control panel (50) stores sampling data among the detection signals of the sensor (40) in the internal storage device (53) in real time at a rate of 1 to 10 per second.

[0030] In one embodiment of the present invention, the sensor (40) is configured by one or more of a water level sensor (45) installed on one side of the air chamber (30) to detect the water level of the air chamber (30); a rotation speed sensor (46) to detect the rotation speed of a pump (11) that is linked according to the flow rate flowing into the main pipe (10); a flow rate sensor (47) to detect the real-time flow rate transported through the main pipe (10); and a valve opening rate sensor (48) to detect the flow rate passing through the main pipe (10).

[0031] At this time, the valve opening rate sensor (48) may be implemented by measuring how much the shut-off valve (11) provided in the main pipe (10) is open, or by measuring the opening degree of a separately provided check valve (not shown in the drawing) and transmitting an electrical signal.

[0032] In addition, when an event occurs in which the real-time detection signal is detected to be higher than the set value, it is recognized that a water shock has occurred and raw data (100 to 10,000 data per second) is stored in the internal storage device (53).

[0033] The above sampling data refers to 1 to 10 detection signals per second extracted from the sensor (40), and any of the ‘front / middle / last parts’ may be selected from the entire data.

[0034] In addition, the above raw data refers to all detection signals transmitted from the sensor (40), and the sensor used in the present invention outputs data at a rate of 100 to 10,000 data per second depending on the specifications of the product used.

[0035] Meanwhile, the control panel (50) is configured to include a communication module (51) that receives a data signal transmitted wired or wirelessly from the sensor (40); an internal storage device (53) that stores data received from the communication module (51) in real time and at the time of an event occurrence according to a control signal from the CPU (54) and distinguishes between the data in the data block D1 (100) or the data block D2 (100a); and a CPU (54) that controls the communication module (51) and the internal storage device (53), and outputs an emergency alarm signal for the occurrence of a water hammer and a control signal for preventing the water hammer when an event occurs in which data received from the communication module (51) is detected to be higher than a set value.

[0036] At this time, when an event occurs (water hammer recognition) in the control panel (50), the CPU (54) outputs a control signal to selectively control the air compressor (not shown in the drawing) or the exhaust valve (not shown in the drawing), thereby preventing the water hammer phenomenon occurring in the pipeline.

[0037] This is explained in detail in the numerous water impact prevention systems already registered by the applicant of the present application, so a detailed explanation is omitted below.

[0038] In particular, the data signal received from the communication module (51) is temporarily stored in a buffer (52) for stable data management, and the data temporarily stored in the buffer (52) can be configured to be stored in the data block D1 (100) and data block D2 (100a) of the internal storage device (53) by distinguishing between real-time and event occurrence according to a control signal of the CPU (54).

[0039] In addition, as illustrated in FIG. 4, the internal storage device (53) stores one or more data of data date and time, and sensor detection signal in data block D1 (100) and data block D2 (100a) according to a control signal of the CPU (154), and the data blocks D1, D2 (100) (100a) are subdivided into a plurality of division blocks (100-1, 100-2, …, 100n) (100a-1, 100a-2, …, 100a-n).

[0040] Each segment block is composed of a header (101) (101a) including an index (INDEX) for searching, a data section (102) (102a) for storing data, and a tail (103) (103a) including an error prevention code. Since this is a general technical matter in data storage methods, a detailed description thereof will be omitted below.

[0041] Accordingly, if a date is specified with the above index, all data values ​​of the date are sorted based on the occurrence date and time, and if a water level or flow rate fluctuation is specified with the index, all data values ​​within the water level or flow rate fluctuation are sorted based on the occurrence date and time, thereby improving the convenience of the manager's situation analysis in the future.

[0042] In particular, the present invention can be connected to a removable external storage device (55) including a memory card or USB memory so that data stored in the internal storage device (53) can be exported to the outside to facilitate data analysis from the outside.

[0043] In a preferred embodiment of the present invention, a USB terminal (not shown in the drawing) is provided on one side of the control panel (50), and a USB memory is inserted into the USB terminal to enable external export of data.

[0044] Accordingly, the detection signal of the sensor (40) including at least one of the water level sensor (45), the rotation speed sensor (46), the flow rate sensor (47), or the valve opening rate sensor (48) is transmitted to the control panel (50) as illustrated in FIG. 2, and the control panel (50) extracts real-time detection signal sampling data transmitted from the sensor (40) and stores it in real-time in the internal storage device (53) at a rate of 1 to 10 per second.

[0045] In particular, the present invention has a technical difference in that when an event occurs in which the sampling data is detected to be higher than a set value in the control panel (50), it recognizes that a water shock has occurred and simultaneously stores 100 to 10,000 raw data per second in a separate, independent data block in the internal storage device (53).

[0046] The occurrence of the above event means, as illustrated in FIG. 3, the T1 time point and the T2 time point when the sampling data among the detection signals of the sensor (40) is H1, H2 or F1, F2 that is greater than the set value, and since the data can be displayed as a graph with continuity, the control panel (50) stores raw data 100 to 10,0000 times per second before and after the event occurs, for example, from a certain time before the event occurs to a certain time after the event occurs, and in the present invention, raw data for a total of 10 minutes is stored, 5 minutes each before and after the event occurs.

[0047] Meanwhile, in order to overcome the memory capacity limit of the internal storage device (53) in the present invention, it is preferable that the CPU (54) apply an algorithm that continuously stores data regardless of the memory capacity by overwriting starting from the partition block with the oldest data in terms of time when the amount of data to be stored rapidly increases due to the occurrence of an event.

[0048] Additionally, each data signal detected by the sensor (40) can be configured to be transmitted in real time to an external server storage device (60) via wireless.

[0049] The above communication module (51) can be implemented as a wired communication network (including an Internet network using RS-232, RS-422, RS-485, S-ATA, IDE, USB, IEEE 1394, and TCPIP protocol) and a wireless communication network (including communication using a specific frequency, an infrared communication network, a laser communication network, and a mobile phone wireless network) such as a transmission / reception antenna. Since the movement of data values ​​and control signals through the wired or wireless communication network is a known technology applied to conventional electronic devices, a detailed description thereof will be omitted below.

[0050] The water impact data storage device according to the present invention is controlled according to the flow chart as shown in Fig. 5.

[0051] That is, after the power of the control panel (50) is turned on, a real-time detection signal is transmitted from the water level sensor (45) (S11), a real-time detection signal is transmitted from the rotation speed sensor (46) (S12), real-time data is transmitted from the flow sensor (47) (S13), and a real-time detection signal is transmitted from the valve opening rate sensor (48) (S14), and the detection signals are stored in the buffer (52) (S20), and in normal times, sampling data among the detection signals of the sensor (40) is stored in the data block D1 (100) of the internal storage device (53) through the buffer (52) at a rate of 1 to 10 per second in real time.

[0052] In addition, after determining whether an event has occurred in which the above real-time detection signal is detected to be greater than the set value (S30), if it is recognized that an event has occurred, the buffer (52) stores 100 to 10,000 raw data per second in the data block D2 (100a) of the internal storage device (53) (S40).

[0053] The present invention as described above is not limited to the specific embodiments described above, and anyone with ordinary skill in the art to which the invention pertains can make various modifications without departing from the gist of the present invention as claimed in the claims.

[0054] *Explanation of symbols

[0055] 10: Main pipe 11: Pump

[0056] 12: Shutoff valve 20: Auxiliary pipe

[0057] 21: Control valve 30: Air chamber

[0058] 31: Connecting pipe 40: Sensor

[0059] 45: Water level sensor 46: Rotation speed sensor

[0060] 47: Flow sensor 48: Valve opening rate sensor

[0061] 50: Control panel 51: Communication module

[0062] 52: Buffer 53: Internal storage

[0063] 54: CPU 55: Removable external storage

[0064] 60: Server storage device

[0065] 100: Data block D1 100a: Data block D2

[0066] 100-1, 100-2, …, 100-n, 100a-1, 100a-2, …, 100a-n: Separation blocks

[0067] 101, 101a: Header 102, 102a: Data section

[0068] 103, 103a: Tail

Claims

1. A detection signal of a sensor (40) comprising at least one of a water level sensor (45) for detecting the water level of an air chamber (30); a rotation speed sensor (46) for detecting the rotation speed of a pump (11) linked to the flow rate flowing into the main pipe (10); a flow rate sensor (47) for detecting the real-time flow rate transported through the main pipe (10); and a valve opening rate sensor (48) for detecting the flow rate passing through the main pipe (10) is transmitted to a control panel (50). The above control panel (50) stores sampling data among the detection signals of the sensor (40) in real time in the internal storage device (53) at a rate of 1 to 10 per second. A high-speed storage device for water impact data on water level and flow rate, characterized in that when an event occurs in which the detection signal of the above sensor (40) is detected to be higher than the set value, the device recognizes that a water impact has occurred and stores raw data at a rate of 100 to 10,000 per second for a certain period of time before and after the event in the internal storage device (53).

2. In paragraph 1, The above control panel (50) comprises: a communication module (51) that receives a data signal transmitted wired or wirelessly from a sensor (40); an internal storage device (53) that stores data received from the communication module (51) in real time and at the time of an event occurrence according to a control signal from a CPU (54) and distinguishes between the data in data block D1 (100) or data block D2 (100a); a CPU (54) that controls the communication module (51) and the internal storage device (53) and generates an emergency alarm signal when an event occurs in which data received from the communication module (51) is detected to be above a set value; A high-speed storage device for water level and flow rate data, characterized by comprising:

3. In paragraph 2, The data signal received from the above communication module (51) is temporarily stored in the buffer (52), A high-speed storage device for water level and flow rate data, characterized in that the data temporarily stored in the above buffer (52) is stored in real time and at the time of event occurrence according to the control signal of the CPU (54) and is stored separately in data block D1 (100) and data block D2 (100a) of the internal storage device (53).

4. In paragraph 1 or 2, The above internal storage device (53) stores one or more data of data date and time, sensor detection signal, and the like in data block D1 (100) and data block D2 (100a) according to the control signal of CPU (154). A high-speed storage device for water level and flow rate data, characterized in that the above data blocks D1, D2 (100) (100a) are subdivided into a plurality of segment blocks (100-1, 100-2, …, 100n) (100a-1, 100a-2, …, 100a-n), and each segment block is composed of a header (101) (101a) including an index for search, a data section (102) (102a) storing data, and a tail (103) (103a) including an error prevention code.

5. In paragraph 1 or 2, A high-speed storage device for water level and flow rate data, characterized in that a removable external storage device (55) including a memory card or USB memory is connected to the above control panel (50) so that data stored in the internal storage device (53) can be exported to the outside.

6. In paragraph 1, A high-speed storage device for water level and flow rate data, characterized in that the valve opening rate sensor (48) is implemented in a way that it measures how much the shut-off valve (11) provided in the main pipe (10) is opened or measures the degree of opening of a separately provided check valve and transmits an electrical signal.

7. In paragraph 2, A high-speed storage device for water level and flow rate data, characterized in that the CPU (54) applies an algorithm that continuously stores data regardless of memory capacity by overwriting the oldest data starting from the partition block in terms of time when the amount of data stored increases rapidly due to the occurrence of an event.

8. In paragraph 1, A high-speed storage device for water level and flow rate data, characterized in that each data signal detected by the above sensor (40) is transmitted in real time to an external server storage device (60) via wireless.

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