Steel pipe cooling system of water ultrasonic flaw detector

Abstract

The utility model relates to the technical field of steel pipe cooling, and discloses a water ultrasonic flaw detector steel pipe cooling system which comprises a first reservoir and a second reservoir which are located on one side of a water ultrasonic flaw detector, a cooling water tower is installed on one side of the top of the first reservoir, and one side of the second reservoir is connected with a fixing frame; the inner wall of the fixing frame is rotationally connected with a plurality of rotating rollers, the tops of the rotating rollers are in rolling connection with a steel pipe body, a plurality of nozzles are fixed to the top of the inner wall of the fixing frame, a plurality of vent holes are formed in the side wall of the cooling water tower, a second filter screen is installed on the inner wall of the cooling water tower, and a plurality of water leakage holes are formed in the bottom of the cooling water tower. In the process, the fan carries out air cooling on the high-temperature water in the descending process of the high-temperature water, the cooled cooling water flows into the second water storage tank through the fourth water pipe, and the process is repeated, so that the temperature of the steel pipe main body is ensured to be below 50 DEG C during flaw detection, and the flaw detection effect of the water ultrasonic flaw detection machine can be ensured not to be influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe cooling technical field, concretely is a kind of water ultrasonic flaw detector steel pipe cooling system. BACKGROUND

[0002] Steel pipe has hollow section, and its length is much greater than diameter or perimeter of steel material. According to section shape, it is divided into round, square, rectangular and special-shaped steel pipe. In steel pipe heat treatment production enterprise, to ensure the quality of steel pipe body after heat treatment, it needs to use flaw detection equipment to carry out pipe body flaw detection. The currently used flaw detection equipment mainly includes electromagnetic ultrasonic flaw detector, magnetic flux leakage flaw detector and water ultrasonic flaw detector and other flaw detection equipment, wherein water ultrasonic flaw detector is widely used in steel pipe production industry due to its advantages of measurable thickness, oblique flaw detection and high precision.

[0003] Water ultrasonic flaw detector has good flaw detection function, but some conditions in flaw detection process are required, such as center deviation requirement of steel pipe and host computer, pipe body temperature and the like. Since the temperature of steel pipe body after heat treatment is high, cooling bed is currently used to cool it. Due to the investment cost of cooling bed and the requirement of steel pipe production efficiency, the pipe body of steel pipe cooled by cooling bed still has residual temperature, especially for steel pipe with large wall thickness (wall thickness is more than 15mm), and in different seasons, the temperature of pipe body can reach 100-200 DEG C when flaw detection.

[0004] In the existing flaw detection process, a large amount of heat is generated due to friction, extrusion and other processes of steel pipe, which causes the temperature of steel pipe to rise. If the temperature of steel pipe is too high, it will significantly affect the detection effect of water ultrasonic flaw detector. Therefore, a water ultrasonic flaw detector steel pipe cooling system is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a water ultrasonic flaw detector steel pipe cooling system to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a water ultrasonic flaw detector steel pipe cooling system, which comprises a first water reservoir and a second water reservoir located on one side of the water ultrasonic flaw detector, a cooling water tower is installed on one side of the top of the first water reservoir, and a fixing frame is connected to one side of the second water reservoir.

[0007] A plurality of rotating rollers are rotatably connected to the inner wall of the fixing frame, a steel pipe body is rollingly connected to the top of the rotating roller, a plurality of spray heads are fixed to the top of the inner wall of the fixing frame, and the spray heads spray water to the surface of the steel pipe body to cool it.

[0008] An infrared temperature sensor is fixed to both sides of the fixing frame and located at both ends of the steel pipe body.

[0009] The cooling water tower side wall is provided with a plurality of air holes, and a second filter screen is installed on the inner wall of the cooling water tower.

[0010] A first water pump is installed on the inner wall bottom of the first water pool, and a third water pipe is communicated with the outlet of the first water pump and located in the cooling water tower.

[0011] The fixed frame is internally provided with a filter assembly.

[0012] As preferred, the second water pool is internally provided with a second water pump, and a first water pipe is communicated with the outlet of the second water pump.

[0013] As preferred, the second water pool is internally provided with a liquid level transmitter and a temperature transmitter.

[0014] As preferred, a valve is installed on the first water pipe, an actuator is installed on one side of the valve, and the output shaft end of the actuator is fixed to the valve rod end of the valve.

[0015] As preferred, the fixed frame is provided with a PLC controller and an analog input module on one side.

[0016] The signal output ends of the infrared temperature sensor, the liquid level transmitter and the temperature transmitter are electrically connected to the input end of the analog input module, the signal output end of the analog input module is electrically connected to the input end of the PLC controller, and the output end of the PLC controller is respectively connected to the input end of the actuator, the first water pump, the fan and the second water pump.

[0017] As preferred, the cooling water tower is provided with a fourth water pipe communicated with the outlet, the outlet of the fourth water pipe is located in the second water pool, a second water pipe is communicated between the fixed frame and the first water pool, and the second water pipe is used for water flowing from the fixed frame to the first water pool.

[0018] As preferred, the filter assembly comprises a support frame, a first filter screen is fixed on the inner wall bottom of the support frame, limit grooves are formed around the bottom of the support frame, and handles are fixed on both sides of the top of the support frame.

[0019] As preferred, a limit plate is fixed on the lower side of the rotating roller on the inner wall of the fixed frame, limit blocks are fixed around the top of the limit plate, and the outer side of the limit block is adapted to the inner side of the limit groove.

[0020] Compared with the prior art, the above technical scheme has the following technical effects:

[0021] I. The cooling water in the second water pool is pumped to the spray head through the first water pipe by the second water pump, the spray head is arranged along the axis of the steel pipe body in parallel, so as to increase the cooling coverage of the steel pipe body, and the cooling water automatically flows into the inside of the first water pool after completing the cooling of the steel pipe body, and the first water pump delivers the high-temperature water to the cooling water tower through the third water pipe. A plurality of water leakage holes are formed in the bottom of the cooling water tower, and the high-temperature water is poured down from a high place. In this process, the fan cools the high-temperature water in the process of descending, and the cooled cooling water flows into the second water pool through the fourth water pipe, so that the system is cyclically operated, the temperature of the steel pipe body is ensured to be below 50 DEG C during flaw detection, and the flaw detection effect of the water ultrasonic flaw detector is not affected.

[0022] II. The first filter screen can effectively intercept the dirt, avoid the dirt entering the water pump, and ensure the water quality of the circulating water, so that the dirt is prevented from accumulating in the system and affecting the cooling effect and the equipment performance. When the first filter screen is taken out for cleaning, the supporting frame is driven to move upwards by the hand-held handle, the limiting block is moved away from the limiting groove, and the first filter screen can be easily taken out for cleaning. When the first filter screen is reinstalled, the limiting block is aligned with the limiting groove and is moved downwards, so that the operation personnel can conveniently install and dismount the first filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0024] Figure 1 It is a first perspective view structural schematic diagram of the utility model;

[0025] Figure 2 It is a second perspective view structural schematic diagram of the utility model;

[0026] Figure 3 It is a main view cross section structural schematic diagram of the utility model;

[0027] Figure 4 It is a spray head structure schematic diagram of the utility model;

[0028] Figure 5 It is a limiting block structure schematic diagram of the utility model;

[0029] Figure 6 It is a supporting frame structure schematic diagram of the utility model.

[0030] Reference signs: 1, first water storage tank; 2, second water storage tank; 3, steel pipe body; 4, infrared temperature sensor; 5, fixing frame; 61, first filter screen; 62, support frame; 63, handle; 64, limiting groove; 65, limiting block; 66, limiting plate; 7, first water pipe; 8, cooling water tower; 9, air hole; 10, valve; 11, actuator; 12, rotating roller; 13, first water pump; 14, second water pipe; 15, third water pipe; 16, fan; 17, second filter screen; 18, fourth water pipe; 19, liquid level transmitter; 20, temperature transmitter; 21, second water pump; 22, PLC controller; 23, spray head; 24, analog input module. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to understand and read the disclosed content by those skilled in the art, and are not used to limit the conditions of the embodiments of the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the effects and purposes of the present application, should still fall within the scope of the disclosed technical content of the present application.

[0033] Embodiment one

[0034] Please refer to Figures 1-4 The present application provides a technical solution: a water ultrasonic flaw detector steel pipe cooling system, comprising a first water storage tank 1 and a second water storage tank 2 located on one side of the water ultrasonic flaw detector, the first water storage tank 1 is a high-temperature water storage tank for collecting cooled water after flaw detection, and the second water storage tank 2 is a low-temperature water storage tank for storing cooled water after cooling by a cooling tower; the first water storage tank 1 is provided with a cooling water tower 8 on one side of the top, and the second water storage tank 2 is connected with a fixing frame 5 on one side; a plurality of rotating rollers 12 are rotatably connected to the inner wall of the fixing frame 5, the rotating rollers 12 are used to support and drive the steel pipe body 3 to move, the steel pipe body 3 is rollingly connected to the top of the rotating rollers 12, a plurality of spray heads 23 are fixed to the top of the inner wall of the fixing frame 5, the spray heads 23 spray water to the surface of the steel pipe body 3 to cool it, the spray heads 23 are fixed to the top of the inner wall of the fixing frame 5 and are arranged in parallel along the axial direction of the steel pipe body 3, and the low-temperature cooled water in the second water storage tank 2 is transported to the spray heads 23 through the first water pipe 7 by the second water pump 21 to uniformly spray and cool the surface of the steel pipe body 3.

[0035] The infrared temperature sensor 4 is fixed on both sides of the fixed frame 5 and located at both ends of the steel pipe body 3. The cooling water tower 8 is installed on the top of the first water storage tank 1, and a plurality of air holes 9 are arranged on the side wall of the cooling water tower 8. The second filter screen 17 is installed on the inner wall of the cooling water tower 8, and the fan 16 is installed on the top of the cooling water tower 8. The second filter screen 17 is installed on the inner wall of the cooling water tower 8, and the fan 16 is installed on the top of the cooling water tower 8. The first water pump 13 is installed on the inner wall of the first water storage tank 1, and the third water pipe 15 is connected to the inside of the cooling water tower 8. The first water pump 13 transports the high-temperature water in the first water storage tank 1 to the top of the cooling water tower 8 through the third water pipe 15. The high-temperature water is filtered by the second filter screen 17 and then flows down through the plurality of water leakage holes arranged on the bottom of the cooling water tower 8. The fan 16 cools the high-temperature water during its descending process. The cooled water flows back to the second water storage tank 2 through the fourth water pipe 18.

[0036] The second water pump 21 is installed on the inner wall of the second water storage tank 2, and the first water pipe 7 is connected to the outlet of the second water pump 21. The inlet of the plurality of spray heads 23 is connected to the outlet of the first water pipe 7. The liquid level transmitter 19 is installed on one side of the inner wall of the second water storage tank 2. The temperature transmitter 20 is installed on the bottom of the inner wall of the second water storage tank 2.

[0037] The valve 10 is installed on the first water pipe 7, and the actuator 11 is installed on one side of the valve 10. The output shaft of the actuator 11 is fixed to the valve rod of the valve 10. The PLC controller 22 and the analog input module 24 are installed on one side of the fixed frame 5. The signal output ends of the infrared temperature sensor 4, the liquid level transmitter 19, and the temperature transmitter 20 are electrically connected to the input end of the analog input module 24. The signal output end of the analog input module 24 is electrically connected to the input end of the PLC controller 22. The output end of the PLC controller 22 is signal connected to the input end of the actuator 11, the first water pump 13, the fan 16, and the second water pump 21. The infrared temperature sensor 4 is fixed on both sides of the fixed frame 5 and located at both ends of the steel pipe body 3. The temperature of the steel pipe surface is monitored in real time. According to the temperature data fed back by the infrared temperature sensor 4, the flow of the second water pump 21 and the rotating speed of the fan 16 are dynamically adjusted to ensure that the temperature of the steel pipe body 3 is stable below 50℃.

[0038] The fourth water pipe 18 is connected to the outlet of the cooling water tower 8, and the outlet of the fourth water pipe 18 is located on the inner side of the second water storage tank 2. The second water pipe 14 is connected between the fixed frame 5 and the first water storage tank 1, and is used for water flowing from the fixed frame 5 to the first water storage tank 1.

[0039] In this embodiment, the model of the infrared temperature sensor 4 is YFL-TA200C, and since the structure and operating principle of the infrared temperature sensor 4 of this model are prior art, the structure and operating principle thereof will not be described herein; in this embodiment, the model of the liquid level transmitter 19 is CG-136p, and since the structure and operating principle of the liquid level transmitter 19 of this model are prior art, the structure and operating principle thereof will not be described herein; in this embodiment, the model of the temperature transmitter 20 is PT100, and since the structure and operating principle of the temperature transmitter 20 of this model are prior art, the structure and operating principle thereof will not be described herein; in this embodiment, the model of the PLC controller 22 is 6ES7288-1SR30-0AA0, and since the structure and operating principle of the PLC controller 22 of this model are prior art, the structure and operating principle thereof will not be described herein; the model of the analog input module 24 is 6ES7288-3AE04-0AA0, and since the structure and operating principle of the analog input module 24 of this model are prior art, the structure and operating principle thereof will not be described herein.

[0040] Working principle: first, use the infrared temperature sensor 4 to measure the temperature of the steel pipe body 3, when the two infrared temperature sensors 4 monitor that the temperature of the steel pipe body 3 is below 50℃, the temperature signal is transmitted to the analog input module 24, the analog input module 24 processes the signal and transmits it to the PLC controller 22, the PLC controller 22 controls the second water pump 21 to stop, at this time the temperature of the steel pipe body 3 meets the requirements of the water ultrasonic flaw detector for the temperature of the steel pipe body 3;

[0041] When one of the two infrared temperature sensors 4 is higher than 50℃, if the temperature difference is less than 20℃, the PLC controller 22 controls the cooling second water pump 21 to open, and the cooling water in the second water tank 2 is delivered to the spray head 23 through the first water pipe 7 to cool the steel pipe body 3, and at the same time the actuator 11 on one side of the valve 10 is controlled to open at 30%, to cool the steel pipe body 3 by spraying water;

[0042] If the temperature difference is between 20℃ and 30℃, the PLC controller 22 controls the actuator 11 on one side of the valve 10 to open at 60%, and if the temperature difference is above 30℃, the PLC controller 22 controls the actuator 11 on one side of the valve 10 to open at 100%, to cool the steel pipe body 3 by spraying water; after ensuring that the temperatures measured by the two infrared temperature sensors 4 are both below 50℃, the corresponding actuator 11 is kept open for continuous operation; the used cooling water is returned to the first water tank 1 through the second water pipe 14;

[0043] In the process of water cooling system operation, the temperature transmitter 20 monitors the water temperature in the second water pool 2. When the water temperature in the second water pool 2 is below 20℃, the temperature transmitter 20 feeds back a signal to the PLC controller 22, and the PLC controller 22 controls the first water pump 13 to stop working and no longer cools the water.

[0044] When the water temperature inside the second water pool 2 is between 20℃ and 30℃, the PLC controller 22 controls the first water pump 13 to operate, so that the high-temperature water is transported to the cooling tower 8 through the third water pipe 15 for cooling; the second filter screen 17 at the bottom of the upper end of the cooling tower is provided with a plurality of small holes, so that the high-temperature water is dispersed and falls down to achieve the purpose of cooling.

[0045] When the water temperature inside the second water pool 2 is above 30℃, the system controls the first water pump 13 and the fan 16 to operate together, the fan 16 blows air upward through the air vent 9 around the lower end of the cooling tower 8, the air enters the cooling tower 8 through the air vent 9, and the high-temperature water that is cooled by air cooling is sent to the outside by the fan 16, so that the high-temperature water is cooled, and the cooled high-temperature water flows back to the second water pool 2 through the fourth water pipe 18.

[0046] The liquid level transmitter 19 detects the liquid level height of the second water pool 2, when the liquid level reaches the minimum required liquid level of the second water pump 21, the liquid level transmitter 19 transmits a signal to the PLC controller 22 to control the first water pump 13 to open and supplement the water in the second water pool 2; when the liquid level reaches the highest set liquid level, the first water pump 13 is controlled to be closed.

[0047] The second water pump 21 pumps the cooling water in the second water pool 2 to the spray head 23 through the first water pipe 7, the spray head 23 is arranged axially and side by side along the steel pipe body 3 to increase the cooling coverage of the steel pipe body 3, and the cooling water automatically flows into the inside of the first water pool 1 after completing the cooling of the steel pipe body 3, and the first water pump 13 transports the high-temperature water to the cooling tower 8 through the third water pipe 15. A plurality of water leakage holes are provided at the bottom of the cooling tower 8 to pour down the high-temperature water from a high place, and in this process, the fan 16 cools the high-temperature water by air cooling during the falling process of the high-temperature water, the cooled cooling water flows into the second water pool 2 through the fourth water pipe 18, and the cycle is repeated to ensure that the temperature of the steel pipe body 3 is below 50℃ during flaw detection, so as to ensure that the flaw detection effect of the water ultrasonic flaw detector is not affected.

[0048] Example Two

[0049] Please refer to Figures 5-6 The difference between this embodiment and example one is:

[0050] The fixed frame 5 is internally provided with a filtering assembly, one side of the fixed frame 5 is provided with a groove for supporting the removal of the support frame 62, and the height of the flow guide plate at the bottom of the first filter screen 61 is higher than the top of the first water tank 1, so that the water inside the first water tank 1 cannot flow back to the inside of the fixed frame 5, the filtering assembly comprises a support frame 62, the inner wall of the support frame 62 is fixedly provided with a first filter screen 61 at the bottom, limit grooves 64 are formed around the bottom of the support frame 62, handles 63 are fixedly arranged on both sides of the top of the support frame 62, a limiting plate 66 is fixedly arranged on the lower side of the rotating roller 12 in the inner wall of the fixed frame 5, limiting blocks 65 are fixedly arranged around the top of the limiting plate 66, the outer side of the limiting block 65 is adapted to the inner side of the limiting groove 64, and the limiting groove 64 and the limiting block 65 realize the positioning and fixing of the support frame 62 and the fixed frame 5.

[0051] Working principle: when the water sprayed by the nozzle 23 contacts the steel pipe body 3, the surface dirt will flow again with the water flow, which will affect the water pump, at this time, the water cooled by the steel pipe body 3 falls on the top of the first filter screen 61, then passes through the first filter screen 61 to filter, and the dirt is blocked on the top of the first filter screen 61, and the filtered water enters the inside of the first water tank 1 through the second water pipe 14;

[0052] When it is necessary to clean the dirt accumulated on the top of the first filter screen 61, only need to hold the two handles 63, the handle 63 drives the support frame 62 to move upwards, so that the limiting block 65 moves away from the inner side of the limiting groove 64, thereby pulling the handle 63 upwards, then pulling the handle 63 to one side, at this time, the dirt on the top of the first filter screen 61 can be cleaned, after cleaning, the limiting block 65 is aligned with the limiting groove 64, and the handle 63 is moved downwards, so that the top of the support frame 62 contacts the top of the limiting plate 66, at this time, the installation of the first filter screen 61 is completed.

[0053] In summary, the first filter screen 61 can effectively intercept the dirt and prevent it from entering the water pump, the filtered water enters the first water tank 1, ensuring the cleanliness of the circulating water, avoiding the accumulation of dirt in the system, affecting the cooling effect and equipment performance, by holding the handle 63 to drive the support frame 62 to move upwards, the limiting block 65 moves away from the limiting groove 64, so that the first filter screen 61 can be easily removed for cleaning, after cleaning, the limiting block 65 is aligned with the limiting groove 64 and moved downwards, so that the operator can conveniently install and disassemble the first filter screen 61.

[0054] It is understood by those skilled in the art that the features recited in various embodiments of the present application and / or claims can be combined or / and integrated in various combinations, even if such combinations are not explicitly recited in the present application. In particular, the features recited in various embodiments of the present application and / or claims can be combined and / or integrated in various combinations without departing from the spirit and teachings of the present application. All these combinations and / or integrations fall within the scope of the present application.

Claims

1. A cooling system for steel pipes in a water ultrasonic flaw detector, comprising a first water storage tank (1) and a second water storage tank (2) located on one side of the water ultrasonic flaw detector, characterized in that: A cooling tower (8) is installed on one side of the top of the first water storage tank (1), and a fixing frame (5) is connected to one side of the second water storage tank (2); The inner wall of the fixed frame (5) is rotatably connected to several rotating rollers (12), and the top of the rotating rollers (12) is rotatably connected to the steel pipe body (3). The top of the inner wall of the fixed frame (5) is fixed with several nozzles (23), and the nozzles (23) spray water onto the surface of the steel pipe body (3) to cool it down. Infrared temperature sensors (4) located at both ends of the steel pipe body (3) are fixed on both sides of the fixing frame (5); The cooling tower (8) has several ventilation holes (9) on its side wall, a second filter screen (17) is installed on the inner wall of the cooling tower (8), and a fan (16) is installed on the top of the cooling tower (8). A first water pump (13) is installed at the bottom of the inner wall of the first water storage tank (1), and the outlet of the first water pump (13) is connected to a third water pipe (15) located inside the cooling tower (8); The mounting bracket (5) is equipped with a filter assembly inside.

2. The water ultrasonic flaw detector steel pipe cooling system according to claim 1, characterized in that: A second water pump (21) is installed at the bottom of the inner wall of the second water storage tank (2). The outlet of the second water pump (21) is connected to a first water pipe (7). The outlet of the first water pipe (7) is connected to the inlet of several nozzles (23).

3. The water ultrasonic flaw detector steel pipe cooling system according to claim 2, characterized in that: A level transmitter (19) is installed on one side of the inner wall of the second water storage tank (2), and a temperature transmitter (20) is installed at the bottom of the inner wall of the second water storage tank (2).

4. The water ultrasonic flaw detector steel pipe cooling system according to claim 3, characterized in that: A valve (10) is installed on the first water pipe (7), and an actuator (11) is installed on one side of the valve (10). The output shaft end of the actuator (11) is fixed to the valve stem end of the valve (10).

5. The water ultrasonic flaw detector steel pipe cooling system according to claim 4, characterized in that: The mounting bracket (5) is equipped with a PLC controller (22) and an analog input module (24) on one side; The signal output terminals of the infrared temperature sensor (4), the level transmitter (19), and the temperature transmitter (20) are all electrically connected to the input terminal of the analog input module (24). The signal output terminal of the analog input module (24) is electrically connected to the input terminal of the PLC controller (22). The output terminal of the PLC controller (22) is connected to the input terminals of the actuator (11), the first water pump (13), the fan (16), and the second water pump (21), respectively.

6. The water ultrasonic flaw detector steel pipe cooling system according to claim 4, characterized in that: The bottom outlet of the cooling tower (8) is connected to a fourth water pipe (18), the outlet of the fourth water pipe (18) is located inside the second water storage tank (2), and a second water pipe (14) is connected between the fixed frame (5) and the first water storage tank (1). The second water pipe (14) is used for water to flow from the fixed frame (5) to the first water storage tank (1).

7. The water ultrasonic flaw detector steel pipe cooling system according to claim 1, characterized in that: The filter assembly includes a support frame (62), a first filter screen (61) is fixed to the bottom of the inner wall of the support frame (62), a limiting groove (64) is opened around the bottom of the support frame (62), and handles (63) are fixed to both sides of the top of the support frame (62).

8. The water ultrasonic flaw detector steel pipe cooling system according to claim 7, characterized in that: The inner wall of the fixed frame (5) is fixed with a limiting plate (66) located below the rotating roller (12). Limiting blocks (65) are fixed around the top of the limiting plate (66). The outer side of the limiting block (65) is adapted to the inner side of the limiting groove (64).

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