CN212674209U - Device for measuring inner diameter and temperature of RH dip pipe - Google Patents
Device for measuring inner diameter and temperature of RH dip pipe Download PDFInfo
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- CN212674209U CN212674209U CN202021565632.XU CN202021565632U CN212674209U CN 212674209 U CN212674209 U CN 212674209U CN 202021565632 U CN202021565632 U CN 202021565632U CN 212674209 U CN212674209 U CN 212674209U
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Abstract
A device for measuring the inner diameter and the temperature of an RH dip pipe belongs to the technical field of RH refining equipment and is used for measuring the inner diameter and the temperature of the RH dip pipe. The technical scheme is as follows: the metal sleeve is of a T-shaped structure, the distance measuring joints are respectively arranged in two ends of a transverse pipe at the front end of the metal sleeve, the rear end of each distance measuring joint is connected with the front end of a spring, the rear end of the spring is fixed in the metal sleeve, a high-temperature thermocouple is fixed in each distance measuring joint, the rear end of a vertical pipe of the metal sleeve is connected with the front end of a supporting rod handle, a rocker control panel is fixed at the rear end of the supporting rod handle, a rocker is installed at the center of the rocker control panel, an instrument is installed at the rear portion of the vertical pipe of the metal sleeve, data wires of the distance measuring joints and the high-temperature thermocouple are connected with the instrument, and two. The utility model discloses can carry out on-line measuring to the RH dip pipe under the high temperature state, measuring result is more accurate reliable, has prolonged the live time of RH dip pipe and has reduced cost of maintenance.
Description
Technical Field
The utility model relates to a device for measuring the inner diameter and the temperature of an RH dip pipe in a high-temperature state, which belongs to the technical field of RH refining equipment.
Background
RH refining is called RH vacuum circulation degassing refining method. The RH refining equipment is a molten steel secondary refining process equipment for producing high-quality steel, in the production process, the whole molten steel metallurgical reaction is carried out in a vacuum tank built with a refractory lining, the lower part of the vacuum tank is provided with two dip pipes with refractory linings, and the upper part of the vacuum tank is provided with a hot bent pipe. The pumped gas is discharged out of the factory building from the hot bent pipe to the vacuum pump system through the gas cooler.
With the increase of the demand on clean steel, the RH external refining technology has made a huge progress, and the RH external refining technology develops from the original single dehydrogenation function to the current multiple functions of vacuum degassing, decarburization, oxygen blowing decarburization, powder injection desulfurization, aluminothermic heating, impurity removal, uniform component and temperature and the like, and becomes a secondary refining metallurgy method commonly used for smelting refined steel at present. Wherein, RH dip pipe is the important equipment of RH vacuum treatment refining process, and RH dip pipe is in high temperature use, and its integrality is the prerequisite of high life dip pipe.
In the process of vacuumizing RH refining, the dip pipe is directly inserted into molten steel with the temperature of more than 1580 ℃ and is soaked for 20-35 min. Because the immersion pipe is made of more materials and has different expansion coefficients, the erosion rate of the immersion pipe caused by molten steel is different. The corrosion is relatively serious at the position of a slag line of the immersion pipe and the position of 100-130 mm at the upper part of the argon pipe.
At present, no corresponding measuring tool is used for expanding the diameter of the dip pipe, the expansion amount is usually judged by visual inspection and experience in a production field, and the dip pipe is taken off line in advance due to judgment errors or material waste is caused due to improper gunning thickness.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a device for measuring RH dip pipe internal diameter and temperature is provided, this kind of measuring device can carry out the on-line measuring to the RH dip pipe under the high temperature state, makes measuring result more accurate reliable to the live time of extension RH dip pipe and reduction cost of maintenance.
The technical scheme for solving the technical problems is as follows:
a device for measuring the inner diameter and temperature of an RH dip pipe comprises a metal sleeve, a distance measuring joint, a spring, a high-temperature thermocouple, a data wire, a joint telescopic pull rope, a meter, a supporting rod handle, a rocker and a rocker control panel, wherein the metal sleeve is of a T-shaped structure, the distance measuring joint is respectively arranged in two ends of a transverse pipe at the front end of the metal sleeve and is in sliding fit with the metal sleeve, the rear end of the distance measuring joint is connected with the front end of the spring, the rear end of the spring is fixed in the metal sleeve, the high-temperature thermocouple is fixed in the distance measuring joint, the temperature measuring end of the high-temperature thermocouple is flush with the front end of the distance measuring joint, the rear end of a vertical pipe of the metal sleeve is connected with the front end of the supporting rod handle, the rocker control panel is fixed at the rear end of the supporting rod handle, the rocker is arranged at the center of the rocker, the metal sleeve is also internally provided with a joint telescopic stay cord, and two ends of the joint telescopic stay cord are respectively connected with the rear end of the distance measuring joint and the rocker.
According to the device for measuring the inner diameter and the temperature of the RH dip pipe, the joint telescopic pull ropes are steel wire ropes, the rear ends of the two distance measuring joints are respectively connected with the front end of one joint telescopic pull rope, a rotating shaft is arranged at the center of the transverse pipe of the metal sleeve, the two joint telescopic pull ropes respectively bypass the rotating shaft to enter the vertical pipe of the metal sleeve, and the rear ends of the two joint telescopic pull ropes are respectively connected with the rocker at the rear end of the vertical pipe.
Above-mentioned measure RH dip pipe internal diameter and temperature's device, there is the instrument screen on the instrument, the instrument screen is tangible display screen, has touch control switch and shows the data of internal diameter and temperature on the tangible display screen.
The utility model has the advantages that:
the metal sleeve of the utility model can carry the distance measuring joint and the high-temperature thermocouple to enter the RH dip pipe for measurement; the distance measuring joint can extend out to two sides under the pushing of the spring to measure the inner diameter of the RH dip pipe, and the high-temperature thermocouple moves along with the distance measuring joint to measure the temperature of the RH dip pipe; the rotating rocker can control the distance measuring joint to extend out and retract through the joint telescopic pull rope; the meter and meter screen can display data on the internal diameter and temperature of the RH dip tube.
The utility model discloses simple structure, convenient to use can carry out the on-line measuring to the RH dip pipe under the high temperature state, and the measuring result is accurate reliable, can analyze the hole enlargement degree of depth and the corresponding temperature of the online dip pipe of RH to the live time of extension RH dip pipe and reduction cost of maintenance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The figures are labeled as follows: the high-temperature thermocouple device comprises a high-temperature thermocouple 1, a ranging joint 2, a spring 3, a metal sleeve 4, a data line 5, a joint telescopic pull rope 6, an instrument 7, an instrument screen 8, a supporting rod handle 9, a rocker 10, a rocker control panel 11 and a rotating shaft 12.
Detailed Description
The utility model discloses constitute by metal casing 4, range finding joint 2, spring 3, high temperature thermocouple 1, data line 5, joint flexible stay cord 6, instrument 7, instrument screen 8, die-pin handle 9, rocker 10, rocker control panel 11.
The figure shows that the metal sleeve 4 is of a T-shaped structure, and a distance measuring joint 2 and a high-temperature thermocouple 1 are respectively arranged in two ends of a transverse pipe at the front end of the metal sleeve 4 and used for measuring the inner diameter and the temperature of the RH dip pipe. The rear end of the vertical tube of the metal sleeve 4 is connected with the front end of the supporting rod handle 9, and the metal sleeve 4 can be inserted into the high-temperature RH dip pipe by using the supporting rod handle 9. A meter 7 is installed at the rear of the metal sleeve 4, and data of the inner diameter and temperature of the RH dip tube can be displayed.
The figure shows that the distance measuring joint 2 is in sliding fit with the metal sleeve 4, the rear end of the distance measuring joint 2 is connected with the front end of the spring 3, the rear end of the spring 3 is fixed in the metal sleeve 4, and the distance measuring joint 2 can extend out of the metal sleeve 4 under the pushing of the spring 3 to measure the inner diameter of the RH dip pipe.
The figure shows that a high-temperature thermocouple 1 is fixed in a distance measuring joint 2, and the temperature measuring end of the high-temperature thermocouple 1 is flush with the front end of the distance measuring joint 2. The high temperature thermocouple 1 extends out along with the distance measuring joint 2, and measures the temperature of the RH dip tube.
The distance measuring connector 2 and the data line 5 of the high-temperature thermocouple 1 are connected with a meter 7, collected signals are transmitted to the meter 7, and the collected signals are displayed by a meter screen 8.
The figure shows that a rocker control disc 11 is fixed at the rear end of a supporting rod handle 9, a rocker 10 is installed at the center of the rocker control disc 111, two ends of a joint telescopic pull rope 6 are respectively connected with the rear end of a ranging joint 2 and the rocker 10, and the rotating rocker 10 can pull the ranging joint 2 to move through the joint telescopic pull rope 6.
The drawing shows that the joint telescopic stay ropes 6 are steel wire ropes, the rear ends of the two distance measuring joints 2 are respectively connected with the front end of one joint telescopic stay rope 6, a rotating shaft 12 is arranged at the center of the transverse pipe of the metal sleeve 4, the two joint telescopic stay ropes 6 respectively bypass the rotating shaft 12 to enter the vertical pipe of the metal sleeve 4, and the rear ends of the two joint telescopic stay ropes 6 are respectively connected with the rocker 10 at the rear end of the vertical pipe.
The utility model discloses implement the back, measured the internal diameter of RH dip pipe accurately, saved the consumption of gunning refractory, improved the life of dip pipe. RH dip pipe uses the utility model discloses the preliminary statistics of relevant data is seen in table 1 around:
TABLE 1
It can be seen from the table, through the utility model discloses an use, promoted the life of RH dip pipe, the promotion range is 20.36%, and the gunning refractory use amount has reduced 16.38%. On one hand, the smelting requirement of a steel mill is greatly met, the production cost is reduced, and simultaneously, the full benefit is created for the manufacturer.
The utility model discloses a use as follows:
before use, the RH dip pipe needs to be observed, and the relatively serious expanded part of the RH dip pipe is known;
the instrument 7 is opened, and the spring 3 is calibrated in a natural state through an instrument screen 8, wherein the standard is 260mm (the original size of the inner diameter of the dip pipe is 540mm, the maximum diameter expansion size is 800mm, the original size is programmed to be 0, and the maximum diameter expansion size is 260 mm);
a support rod handle 9 is held by hand, a rocker 10 is rotated clockwise, a distance measuring joint 2 is driven by a joint telescopic pull rope 6 to compress a spring 3 to 0 position, and the rocker 10 is fixed on a rocker control panel 11;
the metal sleeve 4 is stretched into the diameter-expanding position, the rocker 10 is slowly rotated, the pressure of the spring 3 is released until the end part of the distance measuring joint 2 contacts the inner wall of the RH dip pipe and is compacted, and a sensor at the end part of the distance measuring joint 2 is transmitted on an instrument screen 8 through a data line 5 to be displayed;
the temperature measured by the high-temperature thermocouple 1 is transmitted on an instrument screen 8 through a data line 5 until the data is stable after staying for 3-5 s;
recording the current temperature and inner diameter size, shrinking the ranging nipple 2 to completely enter the metal sleeve 4, withdrawing the metal sleeve 4 from the RH dip tube and placing it in the designated location for storage.
The utility model discloses an embodiment as follows:
the diameter of the transverse pipe of the metal sleeve 4 is 50mm, the length of the transverse pipe is 520mm, the diameter of the vertical pipe is 80mm, and the length of the vertical pipe is 1500 mm;
the diameter of the distance measuring joint 2 is 48mm, the length is 160mm, and the model of the sensor is MDZXH6400AC7T 1;
the diameter of the spring 3 is 45mm, the length is 130mm in a natural state, and the length is 30mm in a fully compressed state;
the model of the high-temperature thermocouple 1 is ZWRNK-310;
the diameter of the joint telescopic pull rope 6 is 8mm, and the length of the joint telescopic pull rope is 1200 mm;
the model number of the meter 7 is OHR-E220D;
the diameter of the supporting rod handle 9 is 50mm, and the length is 200 mm;
the diameter of the rocker 10 is 20mm, and the length is 100 mm;
the diameter of the rocker control disc 11 is 80 mm.
Claims (3)
1. An apparatus for measuring the inner diameter and temperature of an RH dip pipe, characterized in that: the device comprises a metal sleeve (4), a distance measuring joint (2), a spring (3), a high-temperature thermocouple (1), a data line (5), a joint telescopic pull rope (6), an instrument (7), a supporting rod handle (9), a rocker (10) and a rocker control panel (11), wherein the metal sleeve (4) is of a T-shaped structure, the distance measuring joint (2) is respectively arranged in two ends of a transverse pipe at the front end of the metal sleeve (4), the distance measuring joint (2) is in sliding fit with the metal sleeve (4), the rear end of the distance measuring joint (2) is connected with the front end of the spring (3), the rear end of the spring (3) is fixed in the metal sleeve (4), the high-temperature thermocouple (1) is fixed in the distance measuring joint (2), the temperature measuring end of the high-temperature thermocouple (1) is flush with the front end of the distance measuring joint (2), the rear end of a vertical pipe of the metal sleeve (4) is connected with the front, fixed rocker control panel (11) of rear end of die-pin handle (9), rocker (10) are installed to the center of rocker control panel (11), at standpipe rear portion installation instrument (7) of metal casing (4), data line (5) that range finding connects (2) and high temperature thermocouple (1) are connected with instrument (7), connect flexible stay cord (6) in metal casing (4) in addition, the both ends that connect flexible stay cord (6) are connected with rear end and rocker (10) that range finding connects (2) respectively.
2. The apparatus for measuring inner diameter and temperature of an RH dip pipe according to claim 1, wherein: the connector telescopic stay cord (6) is a steel wire rope, the rear ends of the two distance measuring connectors (2) are respectively connected with the front end of one connector telescopic stay cord (6), a rotating shaft (12) is arranged at the center of the transverse pipe of the metal sleeve (4), the two connector telescopic stay cords (6) are respectively wound around the rotating shaft (12) to enter the vertical pipe of the metal sleeve (4), and the rear ends of the two connector telescopic stay cords (6) are respectively connected with a rocker (10) at the rear end of the vertical pipe.
3. The apparatus for measuring inner diameter and temperature of an RH dip pipe according to claim 1, wherein: there is instrument screen (8) on instrument (7), and instrument screen (8) are tangible display screen, have touch control switch and the data that show internal diameter and temperature on the tangible display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021565632.XU CN212674209U (en) | 2020-07-31 | 2020-07-31 | Device for measuring inner diameter and temperature of RH dip pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021565632.XU CN212674209U (en) | 2020-07-31 | 2020-07-31 | Device for measuring inner diameter and temperature of RH dip pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212674209U true CN212674209U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202021565632.XU Active CN212674209U (en) | 2020-07-31 | 2020-07-31 | Device for measuring inner diameter and temperature of RH dip pipe |
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| Country | Link |
|---|---|
| CN (1) | CN212674209U (en) |
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- 2020-07-31 CN CN202021565632.XU patent/CN212674209U/en active Active
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