Cooling water flow detection device for heating furnace

Abstract

The utility model discloses a cooling water flow detection device for a heating furnace, and belongs to the technical field of flow monitoring. The cooling water flow detection device for the heating furnace comprises a cooling water pipe, an outer clamping type sensor and a controller, the cooling water pipe is communicated with an inner cavity of the heating furnace and a cold water tank, and the cooling water pipe comprises a uniform straight pipe section; the outer clamping type sensor is clamped on the uniform straight pipe section and is used for detecting the flow of fluid in the cooling water pipe; the controller is electrically connected with the outer clamping type sensor and used for receiving feedback data of the outer clamping type sensor. The cooling water flow detection device for the heating furnace can realize measurement outside a pipe, and the measurement precision is enhanced by selecting a measurement point for the device.

Description

Technical Field

[0001] The utility model relates to the technical field of flow monitoring, in particular to a heating furnace cooling water flow detection device. Background Art

[0002] The SVG control system of the heating furnace 35kV substation consists of two parts: the SVG reactive dynamic compensation control system and the SVG cooling water system.

[0003] The SVG cooling water system's flow rate was originally measured using a turbine sensor mounted directly on the cooling water pipe. The sensor rotates the turbine blades based on the dynamic force of the flowing fluid, with the rotational speed approximately proportional to the volumetric flow rate. The fluid volume reading from the flow sensor is converted into an electrical signal based on the turbine impeller's rotational speed for control. However, due to a flow sensor failure, the SVG cooling water system could not be fully automatically controlled, and the proper operation of the SVG's reactive dynamic compensation device severely hampered the production schedule of the No. 1 billet heating furnace.

[0004] Based on this, in order to solve the above problems, the present application has developed a heating furnace cooling water flow detection device. Utility Model Content

[0005] The embodiment of the utility model provides a heating furnace cooling water flow detection device, which adopts an external clamp-on sensor to achieve measurement outside the pipe and enhances the measurement accuracy by selecting a measurement point for the device.

[0006] In the first aspect, an embodiment of the present invention discloses a heating furnace cooling water flow detection device, which includes a cooling water pipe, an external clamp-type sensor and a controller. The cooling water pipe connects the inner cavity of the heating furnace and the cold water tank, and the cooling water pipe includes a uniform straight pipe section; the external clamp-type sensor is clamped on the uniform straight pipe section and is used to detect the fluid flow in the cooling water pipe; the controller is electrically connected to the external clamp-type sensor and is used to receive feedback data from the external clamp-type sensor.

[0007] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the external clamp-on sensor is an ultrasonic flow meter.

[0008] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, there are multiple ultrasonic flow meters, and the multiple ultrasonic flow meters are uniformly clamped in the uniform straight pipe section.

[0009] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the uniform straight pipe section is the pipe section with uniform fluid flow field distribution, and the ultrasonic flowmeter is clamped on the pipe section of the cooling water pipe with uniform fluid flow field distribution.

[0010] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the pipe section with uniform fluid flow field distribution includes a vertical pipe section and a horizontal pipe section, and the ultrasonic flowmeter is clamped in the vertical pipe section and / or the horizontal pipe section.

[0011] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the ultrasonic flowmeter is not clamped at a position perpendicular to the horizontal pipe section.

[0012] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the cooling water pipe includes an inlet and an outflow, and the ultrasonic flowmeter is clamped in a uniform straight pipe section of the cooling water pipe between a distance of 10 times the pipe diameter from the inlet and a distance of 5 times the pipe diameter from the outflow.

[0013] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the heating furnace cooling water flow detection device also includes: a water level monitoring meter, which is installed on the uniform straight pipe section and connected to the controller for detecting the water level height in the cooling water pipe.

[0014] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the heating furnace cooling water flow detection device also includes: a pipe wall detection device, which is installed on the uniform straight pipe section and connected to the controller, and is used to detect the pipe wall thickness of the uniform straight pipe section.

[0015] In a preferred embodiment of the above-mentioned heating furnace cooling water flow detection device, the heating furnace cooling water flow detection device further includes: a distance detection device, which is installed on the uniform straight pipe section and is used to detect the distance between the ultrasonic flow meters.

[0016] By adopting the above technical solution, the utility model has at least the following beneficial effects:

[0017] The heating furnace cooling water flow detection device provided by the utility model adopts an external clamping sensor, such as an ultrasonic flow meter, which can be conveniently clamped on the outside of the cooling water pipe to detect the water flow without extending into the pipe.

[0018] The measurement accuracy is improved by clamping the ultrasonic flowmeter to a uniform straight pipe section of the cooling water pipe, especially a pipe section with a uniform fluid flow field distribution.

[0019] The heating furnace cooling water flow detection device also includes a water level monitor, which can detect the water level in the cooling water pipe in real time to prevent inaccurate measurement problems caused by too low a water level.

[0020] The heating furnace cooling water flow detection device also includes a pipe wall detection device that can detect the thickness of the cooling water pipe in real time, reducing the problem of inaccurate measurement accuracy caused by scaling on the inner wall of the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a three-dimensional diagram of a heating furnace cooling water flow detection device disclosed in one embodiment of the present utility model;

[0023] Figure 2 This is another perspective view of a heating furnace cooling water flow detection device disclosed in one embodiment of the present utility model.

[0024] Reference numerals:

[0025] 1. Cooling water pipe; 11. Uniform straight pipe section;

[0026] 2. External clamp-on sensor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0029] like Figure 1-Figure 2 As shown, some embodiments of the present invention disclose a device for detecting the cooling water flow rate of a heating furnace. The device comprises a cooling water pipe 1, a clamp-on sensor 2, and a controller. The cooling water pipe 1 connects the inner cavity of the heating furnace and the cold water tank. The cooling water pipe 1 includes a uniform straight pipe section 11. The clamp-on sensor is clamped to the uniform straight pipe section 11 and is used to detect the fluid flow rate within the cooling water pipe 1. The controller is electrically connected to the clamp-on sensor and is used to receive feedback data from the clamp-on sensor.

[0030] Specifically, the heating furnace requires a large amount of cooling water during operation, and a cold water tank is used to provide cooling water for the heating furnace. A cooling water pipe 1 connects the heating furnace and the cold water tank. The clamp-on sensor 2 does not need to be inserted into the cooling water pipe 1; it simply clamps onto the wall of the cooling water pipe 1 to achieve real-time monitoring of the fluid flow through the cooling water pipe 1. To enhance monitoring accuracy, the clamp-on sensor 2 is preferably clamped to a uniform straight pipe section 11. The data obtained from the detection is transmitted back to the controller for comparison and analysis for inspection personnel.

[0031] In the preferred technical solution of the present application, the clamp-on sensor 2 is an ultrasonic flow meter.

[0032] Specifically, the clamp-on sensor 2 is commonly used and may be an ultrasonic flow meter. The ultrasonic flow meter uses non-contact measurement and is not directly mounted on the cooling water pipe 1. During the production process, if the detection element is damaged, it is easy to repair and replace.

[0033] In the preferred technical solution of the present application, there are multiple ultrasonic flow meters, and the multiple ultrasonic flow meters are uniformly clamped in the uniform straight pipe section 11.

[0034] Specifically, providing multiple ultrasonic flow meters can, on the one hand, improve measurement accuracy, and on the other hand, prevent measurement delays caused by damage to a certain ultrasonic flow meter.

[0035] In the preferred technical solution of this application, the uniform straight pipe section 11 is a pipe section with a uniform fluid flow field distribution, and the ultrasonic flowmeter is clamped to the pipe section of the cooling water pipe 1 with a uniform fluid flow field distribution. The pipe section with a uniform fluid flow field distribution includes a vertical pipe section and a horizontal pipe section, and the ultrasonic flowmeter is clamped to the vertical pipe section and / or the horizontal pipe section.

[0036] Specifically, the ultrasonic flowmeter's measurement points are preferably selected in pipe sections with uniform flow field distribution to ensure measurement accuracy. Vertical pipe sections are where fluid flows upward, while horizontal pipe sections are selected where fluid is fully filled.

[0037] In the preferred technical solution of the present application, the ultrasonic flowmeter is not clamped at a position perpendicular to the horizontal pipe section.

[0038] Specifically, on horizontal pipe sections, ultrasonic flow meters should be installed at the 9 o'clock and 3 o'clock positions of the pipe, and should avoid the 6 o'clock and 12 o'clock positions to prevent signal attenuation caused by sediment at the bottom of the pipe or bubbles and cavitation at the top of the pipe.

[0039] In the preferred technical solution of the present application, the cooling water pipe 1 includes an inlet and an outflow, and the ultrasonic flowmeter is clamped in a uniform straight pipe section 11 of the cooling water pipe 1 between a distance of 10 times the pipe diameter from the inlet and a distance of 5 times the pipe diameter from the outflow.

[0040] Specifically, the measurement point should be a uniform straight pipe section 11 within 10 times the upstream diameter and 5 times the downstream diameter. Within this range, there should be no valves, elbows, reducers or other devices that interfere with the flow field.

[0041] In the preferred technical solution of the present application, the heating furnace cooling water flow detection device also includes: a water level monitor, which is installed in the uniform straight pipe section and connected to the controller to detect the water level height in the cooling water pipe 1.

[0042] Specifically, the water level monitor can detect the water level in the cooling water pipe 1. In this way, the full fluid flow in the cooling water pipe 1 can be grasped through water level monitoring, thereby helping the ultrasonic flow meter select an appropriate measurement point.

[0043] In the preferred technical solution of the present application, the heating furnace cooling water flow detection device also includes: a pipe wall detection device, which is installed on the uniform straight pipe section 11 and connected to the controller for detecting the pipe wall thickness of the uniform straight pipe section 11.

[0044] Specifically, the fluid in the cooling water pipe 1 is prone to scale formation on the inner wall when the water flow rate is not high. In order to fully consider the scaling condition of the inner wall of the pipe, it is best to select a pipe section without scale for measurement. If this cannot be fully met, the scale needs to be considered as a lining to obtain better measurement accuracy.

[0045] In the preferred technical solution of the present application, the heating furnace cooling water flow detection device further includes: a distance detection device, which is installed in the uniform straight pipe section 11 and is used to detect the distance between the ultrasonic flow meters.

[0046] Specifically, the distance detection device detects the distance between the ultrasonic flow meters to ensure that the installation positions of the ultrasonic flow meters are more appropriate and the measurement accuracy is higher.

[0047] Before installing a clamp-on flow sensor, clean the pipe's exterior and select a dense section for sensor installation. Apply coupling compound between the sensor and the pipe to ensure there are no bubbles between the sensor and the pipe wall. Install the two ultrasonic flowmeter probes horizontally along the pipe axis. The two sensors should be installed parallel to the same direction, consistent with the flow direction of the medium. This allows for easy positioning and fully meets site requirements with minimal modifications.

[0048] Signal strength refers to the strength of the received signal in both the upstream and downstream directions. Generally, the greater the signal strength, the more stable the measurement value and the longer-term reliable operation. The system operates normally only when the signal strength in both directions is greater than 60. If the signal strength is too low, recheck the sensor's installation position, installation spacing, and whether the pipeline is suitable for installation.

[0049] After the ultrasonic flowmeter is properly connected and inspected, power on the meter for self-diagnosis. Once the meter is functioning properly, enter parameters such as pipe outer diameter, pipe material, wall thickness, fluid type, sensor type, sensor mounting method, and sensor mounting distance according to the meter's manual. Select the menu to enter the flow rate lower limit (4mA) and the flow rate upper limit (20mA). Once the parameters are set, check the flow measurement display to ensure it is normal. Verify that the SVG cooling water system's automatic control PLC is collecting the flow signal correctly before starting automatic operation.

[0050] After adopting the non-contact ultrasonic flowmeter, the equipment operates reliably, reducing the SVG failure rate and spare parts costs, improving equipment operation, and achieving fully automatic control of the SVG cooling water system, providing strong equipment support for production and construction.

[0051] The heating furnace cooling water flow detection device provided by the utility model adopts an external clamping sensor, such as an ultrasonic flow meter, which can be conveniently clamped on the outside of the cooling water pipe to detect the water flow without extending into the pipe.

[0052] The measurement accuracy is improved by clamping the ultrasonic flowmeter to a uniform straight pipe section of the cooling water pipe, especially a pipe section with a uniform fluid flow field distribution.

[0053] The heating furnace cooling water flow detection device also includes a water level monitor, which can detect the water level in the cooling water pipe in real time to prevent inaccurate measurement problems caused by too low a water level.

[0054] The heating furnace cooling water flow detection device also includes a pipe wall detection device that can detect the thickness of the cooling water pipe in real time, reducing the problem of inaccurate measurement accuracy caused by scaling on the inner wall of the water pipe.

[0055] It should be pointed out in particular that the various components or steps in the above-mentioned embodiments can be cross-linked, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable permutations and combinations should also fall within the scope of protection of the present utility model, and the scope of protection of the present utility model should not be limited to the embodiments.

[0056] The above are exemplary embodiments disclosed in the present invention. The order in which the above embodiments of the present invention are disclosed is for description only and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples. Various changes and modifications can be made without departing from the scope defined by the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless expressly limited to the singular.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to limit the scope of the disclosure of the present invention (including the claims) to these examples. Based on the principles of the present invention, the technical features of the above embodiments or different embodiments may be combined, and there are many other variations of the various aspects of the present invention described above, which are not provided in detail for the sake of clarity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heating furnace cooling water flow detection device, characterized in that: include: A cooling water pipe, which connects the inner cavity of the heating furnace and the cold water tank, and includes a uniform straight pipe section: An external clamp-on sensor, clamped on the uniform straight pipe section, for detecting the fluid flow in the cooling water pipe; A controller is electrically connected to the external clamp-on sensor and is used to receive feedback data from the external clamp-on sensor.

2. The heating furnace cooling water flow detection device according to claim 1, characterized in that: The clamp-on sensor is an ultrasonic flow meter.

3. The heating furnace cooling water flow detection device according to claim 2, characterized in that: There are multiple ultrasonic flow meters, and the multiple ultrasonic flow meters are evenly clamped in the uniform straight pipe section.

4. The heating furnace cooling water flow detection device according to claim 2, characterized in that: The uniform straight pipe section is a pipe section where the fluid flow field is uniformly distributed, and the ultrasonic flowmeter is clamped on the pipe section of the cooling water pipe where the fluid flow field is uniformly distributed.

5. The heating furnace cooling water flow detection device according to claim 4, characterized in that: The pipe section with uniform fluid flow field distribution includes a vertical pipe section and a horizontal pipe section, and the ultrasonic flowmeter is clamped in the vertical pipe section and / or the horizontal pipe section.

6. The heating furnace cooling water flow detection device according to claim 5, characterized in that: The ultrasonic flow meter is not clamped at a position perpendicular to the horizontal pipe section.

7. The heating furnace cooling water flow detection device according to claim 2, characterized in that: The cooling water pipe includes an inflow portion and an outflow portion, and the ultrasonic flowmeter is clamped in a uniform straight pipe section of the cooling water pipe between a distance of 10 times the pipe diameter from the inflow portion and a distance of 5 times the pipe diameter from the outflow portion.

8. The heating furnace cooling water flow detection device according to claim 1, characterized in that: Also includes: A water level monitor is installed on the uniform straight pipe section and connected to the controller, and is used to detect the water level height in the cooling water pipe.

9. The heating furnace cooling water flow detection device according to claim 1, characterized in that: Also includes: A pipe wall detection device is installed on the uniform straight pipe section and connected to the controller, and is used to detect the pipe wall thickness of the uniform straight pipe section.

10. The heating furnace cooling water flow detection device according to claim 3, characterized in that: Also includes: A distance detection device is installed on the uniform straight pipe section and is used to detect the distance between the ultrasonic flow meters.

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