CN203470867U - Off-line calibrating device for molten steel level meter - Google Patents

Abstract

The utility model relates to the field of instrument maintenance for molten steel level gauges of continuous casting machines, in particular to an off-line calibration device for molten steel level gauges, which is characterized in that it includes a bracket, a calibration tank, a calibration board and a lifting device, and the calibration of the top opening The slot is set on the bracket, and the calibration board is suspended in the calibration slot by the lifting device. The lifting device includes a bracket, a screw and a nut. The nut is provided with a handle, the surface of the screw is provided with a slide groove along the axis, and the bracket is provided with a protrusion matching the slide groove. Compared with the prior art, the beneficial effect of the utility model is that the measurement deviation of the molten steel hydraulic gauge can be tested in an offline state and re-corrected, thereby helping to improve the stability of the molten steel level gauge, reduce the failure rate, and prolong Crystallizer maintenance cycle, reducing the workload of maintenance personnel.

Description

Off-line calibration device for molten steel level gauge

technical field

The utility model relates to the field of instrument maintenance for a molten steel level gauge of a continuous casting machine, in particular to an off-line proofreading device for a molten steel level gauge. the

Background technique

In the continuous casting process of the steelmaking plant, the control of the molten steel level in the mold plays a vital role in the continuous casting production and is the core of the continuous casting production. The control of the molten steel level in the mold not only directly affects the quality of the billet , and the control of the liquid level of the crystallizer also affects the pouring speed, which in turn affects the output of continuous casting. the

The requirements for the detection and automatic control of the molten steel level in the mold are very strict. In order to ensure smooth production, it is necessary to use a calibration table to calibrate in the crystallizer regularly during routine maintenance to ensure the accuracy of the measurement of the molten steel level gauge. However, in the actual production process, many unexpected situations often occur, such as the cable damage of the molten steel level gauge, the increase of fluctuations in liquid level detection, etc., and it is necessary to check the molten steel level gauge online to confirm the accuracy of the measurement. There is molten steel inside and online calibration cannot be realized. If the liquid level is seriously misaligned, it will cause the speed of casting machine casting, which will reduce the impact on output. During normal production, the crystallizer is filled with molten steel, and the calibration work is limited to regular repairs or long-term pouring intervals. When there is a measurement deviation in the liquid level, it can only be calibrated after scheduled repairs or long-term pouring intervals. The cycle is long, and the performance of the molten steel level gauge cannot be guaranteed to be stable. the

Contents of the invention

The purpose of this utility model is to provide an off-line proofreading device for the molten steel level gauge, which can calibrate the measurement deviation of the molten steel hydraulic gauge in an offline state, improve the performance stability of the molten steel level gauge, reduce the failure rate, and prolong the Maintenance cycle, reduce the workload of maintenance personnel. the

In order to achieve the above object, the utility model adopts the following technical scheme to realize:

Off-line calibration device for molten steel level gauge, including bracket, calibration tank, calibration board and lifting device, the calibration tank with the top opening is set on the bracket, one side of the calibration tank is equipped with a probe placement pallet, and the calibration board passes through The lifting device is suspended in the calibration tank. the

The lifting device includes a support frame, a screw rod and a nut. The nut is provided with a crank handle, the surface of the screw rod is provided with a slide groove along the axis, and the support frame is provided with a protrusion matching the slide groove. the

Compared with the prior art, the beneficial effect of the utility model is that the measurement deviation of the molten steel hydraulic gauge can be tested and re-corrected in an off-line state, thereby helping to improve the stability of the molten steel level gauge, reduce the failure rate, and prolong Crystallizer maintenance cycle, reducing the workload of maintenance personnel. the

Description of drawings

Fig. 1 is a schematic diagram of the application state structure of the utility model embodiment;

Fig. 2 is a sectional view of line A-A in Fig. 1 . the

In the figure: 1-bracket 2-calibration tank 3-calibration board 4-lifting device 5-bracket 6-screw 7-nut 8-handle 9-chute 10-protrusion 11-liquid level gauge probe 12-probe Place pallet

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described:

See Figure 1 and Figure 2, which are schematic diagrams of the embodiment of the off-line calibration device for molten steel level gauge of the present invention, including a bracket 1, a calibration tank 2, a calibration board 3 and a lifting device 4, and the calibration tank 2 with the top opening is arranged on the On the support 1 , a probe placement pallet 12 is provided on one side of the calibration tank 2 , and the calibration board 3 is suspended in the calibration tank 2 through the lifting device 4 . The lifting device 4 includes a bracket 5, a screw 6 and a nut 7. The nut 7 is provided with a handle 8. When the handle 8 is rotated, the nut 7 rotates relative to the bracket 5. The surface of the screw 7 is provided with a chute 9 along the axis, and the bracket 5 is provided with the protrusion 10 that matches with the chute, when preventing from shaking the handle, the screw rod follows the nut to rotate. the

When calibrating, place the long rod of the liquid level gauge probe 11 on the probe placement support plate 11, the calibration tank 2 is used to simulate the crystallizer, the probe placement support plate 12 is used to simulate the crystallizer cover plate, and the liquid level gauge probe 11 Probe to the top of the calibration board 3, you can perform offline calibration at any time, the specific operation is as follows:

1) Use the calibration board 3 to simulate the actual molten steel level, shake the handle 8 to raise the calibration board 3 until the distance from the liquid level meter probe 11 is 0mm, and the calibration here is zero;

2) Then, by shaking the handle 8, the calibration plate 3 is lowered to a distance of 100mm from the liquid level gauge probe 11, and at this time, the OPC calibration is performed, and it corresponds to the display table;

3) Adjust the height of the calibration board 3 by shaking the handle 8, and check the stability of the liquid level meter probe 11 by comparing the liquid level display at 0mm, 30mm, 60mm, 90mm, and 120mm respectively. the

Claims (2)

1. liquid steel level meter off-line verifying unit, it is characterized in that, comprise support, verification groove, verifying plate and lowering or hoisting gear, open-topped verification groove is arranged on support, one side of verification groove is provided with probe placement supporting plate, and verifying plate is suspended in verification groove by lowering or hoisting gear.

2. liquid steel level meter off-line verifying unit according to claim 1, is characterized in that, described lowering or hoisting gear comprises support, screw rod and nut, and nut is provided with crank, and the surface of screw rod is provided with chute along axis, and support is provided with the projection of mating with chute.

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