A rolling mill cooling water flow pressure warning device

Abstract

The utility model discloses a kind of rolling mill cooling water flow pressure warning device, including detection tube, flow sensor and pressure sensor are installed on detection tube, the left and right ends of detection tube are respectively equipped with first solenoid valve, flow sensor and pressure sensor are located between two first solenoid valves, descaling mechanism includes: water tank, circulating pump, input pipe, return pipe and second solenoid valve, audible and visual annunciator is fixedly installed on PLC controller.The utility model passes through the flow on detection tube, real-time data acquisition by pressure sensor and is transmitted to PLC controller, when data is over preset interval, PLC controls audible and visual annunciator alarm, timely remind exception;Descale mechanism is equipped, and circulating transport descaling agent flush sensor probe descaling is avoided, scale influence monitoring precision is avoided, maintenance is more simple.

Description

Technical Field

[0001] This utility model relates to the field of flow and pressure warning technology, and in particular to a flow and pressure warning device for rolling mill cooling water. Background Technology

[0002] In the rolling mill production process, the stable operation of the cooling water system is crucial for ensuring the safety of rolling mill equipment and improving product quality. However, existing rolling mill cooling water monitoring devices generally have many shortcomings: On the one hand, traditional monitoring devices mostly rely on manual periodic inspections or data collection by a single sensor, which not only makes it difficult to capture abnormal fluctuations in cooling water flow and pressure in real time, but also results in delayed data feedback, often leading to untimely detection of abnormalities, which in turn causes equipment failures such as overheating and wear of rolls and damage to bearings, and even affects the continuity of production; on the other hand, calcium and magnesium ions easily precipitate in the rolling mill cooling water to form scale, and are mixed with impurities such as iron oxide scale, which adhere to the probes of flow and pressure sensors for a long time, seriously interfering with the monitoring accuracy, leading to data distortion or false alarms. The lack of a convenient and effective self-descaling function necessitates manual disassembly and cleaning of sensors, which is not only time-consuming and labor-intensive with high maintenance costs, but also affects production efficiency due to downtime caused by disassembly. Therefore, in view of the above situation, there is an urgent need to develop a rolling mill cooling water flow and pressure warning device that collects data in real time through flow and pressure sensors on the detection tube and transmits it to the PLC controller. When the data exceeds the preset range, the PLC controls an audible and visual alarm to promptly alert to the abnormality. The device should also include a descaling mechanism that can circulate descaling agent to flush the sensor probe and remove scale, preventing scale from affecting monitoring accuracy and simplifying maintenance. This would overcome the shortcomings of current practical applications and meet current needs. Utility Model Content

[0003] The purpose of this invention is to provide a rolling mill cooling water flow and pressure warning device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A rolling mill cooling water flow and pressure warning device includes a detection tube, a flow sensor, a pressure sensor, a first solenoid valve, a descaling mechanism, a PLC controller, and an audible and visual alarm. The detection tube is equipped with a flow sensor and a pressure sensor. First solenoid valves are installed at both ends of the detection tube, with the flow sensor and pressure sensor located between the two first solenoid valves. The descaling mechanism includes a water tank, a circulating pump, an input pipe, a return pipe, and a second solenoid valve. The inlet end of the circulating pump is connected to the water tank via a pipe, and the outlet end of the circulating pump is connected to the input pipe. The input pipe is fixed to and communicates with the bottom of the detection tube. One end of the return pipe is fixed to and communicates with the upper side of the detection tube, and the other end is fixed to and communicates with the upper side of the water tank. Second solenoid valves are installed on both the input pipe and the return pipe. An audible and visual alarm is fixedly installed on the PLC controller. The flow sensor, pressure sensor, first solenoid valve, circulating pump, second solenoid valve, and audible and visual alarm are electrically connected to the PLC controller.

[0006] Preferably, flanges are fixed at both ends of the detection tube.

[0007] Preferably, the lower side of the detection tube is fixed with a drain port that communicates with it, and the bottom of the drain port is detachably connected to an end cap by a thread.

[0008] Preferably, the water tank has an inlet at the top, and a top cover is detachably connected to the inlet by threads. The water tank also has an outlet at the bottom, and a plug is detachably installed on the outlet by threads.

[0009] The beneficial effects of this utility model are as follows: When using this rolling mill cooling water flow and pressure warning device, the detection tube is installed on the rolling mill cooling water pipe. The rated flow and pressure ranges are pre-input into the PLC controller. During normal use, the two first solenoid valves are open, and the two second solenoid valves are closed, allowing water to flow through the detection tube. The flow and pressure sensors detect the cooling water flow and pressure respectively and transmit the data to the PLC controller. When the data detected by the flow and pressure sensors are outside the rated range, the PLC controller activates an audible and visual alarm to alert users to the abnormality. After a period of use... Afterwards, the flow sensor and pressure sensor are descaled. Descaling agent is added to the water tank, two second solenoid valves are opened, two first solenoid valves are closed, and the circulation pump is started. The circulation pump delivers the descaling agent to the detection tube, dissolving the scale adhering to the flow sensor and pressure sensor probes. The descaling agent then flows back to the water tank through the return pipe, maintaining a continuous circulation. The flowing descaling agent flushes away the scale, causing it to detach from the flow sensor and pressure sensor more quickly. This process is repeated for about half an hour. After descaling, the plug is unscrewed to drain the wastewater from the water tank, and the end cap is unscrewed to drain the wastewater from the detection tube. In summary, this invention uses flow and pressure sensors on the detection tube to collect data in real time and transmit it to the PLC controller. When the data exceeds a preset range, the PLC controls an audible and visual alarm to promptly alert to any abnormalities. The descaling mechanism circulates the descaling agent to flush the sensor probes, preventing scale from affecting monitoring accuracy and simplifying maintenance. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0011] Figure 2 This is a partial structural diagram of the present invention. Figure 1 .

[0012] Figure 3 This is a partial structural diagram of the present invention. Figure 2 .

[0013] Legend:

[0014] 1. Detection tube; 101. Flange; 102. Drain outlet; 103. End cap; 2. Flow sensor; 3. Pressure sensor; 4. First solenoid valve; 5. Descaling mechanism; 501. Water tank; 5011. Inlet; 5012. Top cover; 5013. Outlet; 5014. Plug; 502. Circulation pump; 503. Input pipe; 504. Return pipe; 505. Second solenoid valve; 6. PLC controller; 7. Audible and visual alarm. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Specific implementation examples are given below.

[0017] See Figures 1-3 In this embodiment of the utility model, a rolling mill cooling water flow and pressure warning device includes a detection tube 1, a flow sensor 2, a pressure sensor 3, a first solenoid valve 4, a descaling mechanism 5, a PLC controller 6, and an audible and visual alarm 7.

[0018] Flanges 101 are fixed to the left and right ends of the detection tube 1, and the detection tube 1 is fixedly installed onto the rolling mill cooling water pipe through the flanges 101.

[0019] The detection tube 1 is equipped with a flow sensor 2 and a pressure sensor 3, which are used to detect the flow rate and pressure of the cooling water, respectively.

[0020] The lower side of the detection tube 1 is fixed with a drain outlet 102 that is connected to it. The bottom of the drain outlet 102 is detachably connected to an end cap 103 by a thread. A sealing ring is provided inside the end cap 103 to prevent water leakage.

[0021] The detection tube 1 is equipped with a first solenoid valve 4 at its left and right ends respectively. The flow sensor 2 and the pressure sensor 3 are located between the two first solenoid valves 4. During normal operation, the two first solenoid valves 4 are in the open state.

[0022] The descaling mechanism 5 includes: a water tank 501, a circulating pump 502, an input pipe 503, a return pipe 504, and a second solenoid valve 505. The water tank 501 and the circulating pump 502 are both placed on the ground. The water tank 501 is used to temporarily store the descaling agent (liquid). The inlet end of the circulating pump 502 is connected to the water tank 501 via a pipe, and the outlet end of the circulating pump 502 is connected to the input pipe 503. The input pipe 503 is fixed to and communicates with the bottom of the detection pipe 1. One end of the return pipe 504 is fixed to and communicates with the upper side of the detection pipe 1, and the other end is fixed to and communicates with the upper side of the water tank 501. The input pipe 503 and the return pipe 504 are equipped with... Equipped with a second solenoid valve 505, when descaling of flow sensor 2 and pressure sensor 3 is required, descaling agent is added to water tank 501, both second solenoid valves 505 are opened, both first solenoid valves 4 are closed, and circulation pump 502 is started. The circulation pump 502 delivers the descaling agent to detection tube 1, where it dissolves the scale adhering to the probes of flow sensor 2 and pressure sensor 3. The descaling agent then flows back to water tank 501 through return pipe 504. The descaling agent is in a circulating state, and the flowing descaling agent flushes the scale, causing the scale on flow sensor 2 and pressure sensor 3 to fall off more quickly. This process is maintained for about half an hour.

[0023] The water tank 501 has an inlet 5011 at the top, through which descaling agent is added. A top cover 5012 is detachably connected to the inlet 5011 by threads. The water tank 501 has an outlet 5013 at the bottom, through which a plug 5014 is detachably installed. A sealing ring is fixed inside the plug 5014 to prevent water leakage.

[0024] The PLC controller 6 is fixedly installed on the ground. An audible and visual alarm 7 is also fixedly installed on the PLC controller 6. The flow sensor 2, pressure sensor 3, first solenoid valve 4, circulating pump 502, second solenoid valve 505, and audible and visual alarm 7 are electrically connected to the PLC controller 6 and are electrically controlled by the PLC controller 6. The PLC controller 6 is equipped with a display screen and operation buttons. The display screen shows the detection data of the flow sensor 2 and pressure sensor 3, and the user operates the system using the operation buttons. During use, the user pre-inputs the rated flow and pressure ranges into the PLC controller 6. When the detection data of the flow sensor 2 and pressure sensor 3 are outside the rated range, the PLC controller 6 controls the audible and visual alarm 7 to sound an alarm, alerting the user.

[0025] Working Principle: This rolling mill cooling water flow and pressure warning device works by installing the detection tube 1 onto the rolling mill cooling water pipe. The rated flow and pressure ranges are pre-entered into the PLC controller 6. During normal operation, the two first solenoid valves 4 are open, and the two second solenoid valves 505 are closed, allowing water to flow through the detection tube 1. The flow sensor 2 and pressure sensor 3 detect the cooling water flow and pressure, respectively, and transmit this information to the PLC controller 6. When the data detected by the flow sensor 2 and pressure sensor 3 are outside the rated range, the PLC controller 6 activates the audible and visual alarm 7 to alert users to the abnormality. After a period of use, the flow sensor 2 and pressure sensor 505 are monitored. 3. Perform a descaling process by adding the descaling agent to the water tank 501, opening both second solenoid valves 505, closing both first solenoid valves 4, and starting the circulation pump 502. The circulation pump 502 will deliver the descaling agent to the detection tube 1. The descaling agent will dissolve the scale adhering to the probes of the flow sensor 2 and pressure sensor 3. The descaling agent will then flow back to the water tank 501 through the return pipe 504. The descaling agent will be in a circulating state, and the flowing descaling agent will flush away the scale, allowing the scale on the flow sensor 2 and pressure sensor 3 to fall off more quickly. Continue running for about half an hour. After the descaling is completed, unscrew the plug 5014 to drain the wastewater in the water tank 501, and unscrew the end cap 103 to drain the wastewater in the detection tube 1.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rolling mill cooling water flow and pressure warning device, characterized in that, The system includes a detection tube (1), a flow sensor (2), a pressure sensor (3), a first solenoid valve (4), a descaling mechanism (5), a PLC controller (6), and an audible and visual alarm (7). The detection tube (1) is equipped with a flow sensor (2) and a pressure sensor (3). The left and right ends of the detection tube (1) are respectively equipped with first solenoid valves (4). The flow sensor (2) and the pressure sensor (3) are located between the two first solenoid valves (4). The descaling mechanism (5) includes a water tank (501), a circulating pump (502), an input pipe (503), a return pipe (504), and a second solenoid valve (505). The inlet end of the circulating pump (502) is connected to the water tank (501) through a pipe. The outlet end of the circulating pump (502) is connected to the input pipe (503). The input pipe (503) is fixed and connected to the bottom of the detection pipe (1). One end of the return pipe (504) is fixed and connected to the upper side of the detection pipe (1), and the other end is fixed and connected to the upper side of the water tank (501). A second solenoid valve (505) is installed on both the input pipe (503) and the return pipe (504). An audible and visual alarm (7) is fixedly installed on the PLC controller (6). The flow sensor (2), pressure sensor (3), first solenoid valve (4), circulating pump (502), second solenoid valve (505) and audible and visual alarm (7) are electrically connected to the PLC controller (6).

2. The rolling mill cooling water flow and pressure warning device according to claim 1, characterized in that, Flanges (101) are fixed at the left and right ends of the detection tube (1).

3. The rolling mill cooling water flow and pressure warning device according to claim 1, characterized in that, The lower side of the detection tube (1) is fixed with a drain port (102) connected thereto, and the bottom of the drain port (102) is detachably connected with an end cap (103) by a thread.

4. The rolling mill cooling water flow and pressure warning device according to claim 1, characterized in that, The water tank (501) is provided with a feed inlet (5011) at the top, and a top cover (5012) is detachably connected to the feed inlet (5011) by means of threads. The water tank (501) is provided with a discharge outlet (5013) at the bottom, and a plug (5014) is detachably installed on the discharge outlet (5013) by means of threads.

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