Protective device for fan-shaped section displacement sensor of thick slab continuous casting machine

Abstract

The utility model relates to a protective device for a fan-shaped section displacement sensor of a thick slab continuous casting machine, which comprises a protective cover body, the protective cover body comprises an outer wall, an inner wall and a base, the outer wall and the inner wall are arranged on the base, the outer wall is sleeved outside the inner wall, a gap is reserved between the outer wall and the inner wall, the gap is a cooling water cavity, and the cooling water cavity is communicated with the inner wall. A water outlet pipe thread and a water inlet pipe thread which are communicated with the cooling water cavity are respectively arranged at the upper end and the lower end of the outer wall; according to the utility model, the direct heat radiation of a hot blank and the erosion of high-temperature water vapor in the production of the continuous casting machine are effectively resisted, the roll gap control precision is guaranteed, and the service life of the sensor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel smelting equipment technical field, concretely for a kind of protective device for slab continuous casting machine fan-shaped section displacement sensor. BACKGROUND

[0002] Slab continuous casting machine has the fan-shaped section of dynamic roll gap, each fan-shaped section is equipped with four sensors to detect the action position of four oil cylinders, the environment in fan-shaped section is bad, high temperature can make sensor precision decline, fan-shaped section roll gap control abnormality causes abnormal blank locking, and casting blank quality accident occurs;Sensor is easily damaged under high-temperature radiation, water, steam, is affected by season, cooling effect is not good in fan-shaped section protective cover using compressed air in high-temperature weather in summer, so that the service life of displacement sensor is shorter. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a kind of protective device for slab continuous casting machine fan-shaped section displacement sensor, effectively resist the direct heat radiation of hot blank in continuous casting machine production and the erosion of high-temperature water vapor, guarantee roll gap control precision, improve the service life of sensor.

[0004] The technical scheme that the utility model solves above technical problem: provide a kind of protective device for slab continuous casting machine fan-shaped section displacement sensor, including protective cover body, the protective cover body includes outer wall, inner wall and base, the outer wall and inner wall are all according to on the base, the outer wall is set in the outer portion of inner wall, and there is gap between the two, the gap is cooling water cavity, outer wall upper end and lower end are provided with water outlet pipe screw thread and water inlet pipe screw thread that are connected with cooling water cavity respectively.

[0005] The utility model further defined technical scheme is as follows:

[0006] Preferably, the inner wall is a hollow structure for mounting a sensor.

[0007] Preferably, the outer wall, the inner wall and the base are made of galvanized steel.

[0008] Preferably, the outer wall and the base are connected with a wire slot for sensor cable wiring, and are sealed with refractory mortar.

[0009] Preferably, the base contact surface has a circle of high-temperature rubber pad.

[0010] Preferably, the base is provided with a plurality of bolt holes for fixing.

[0011] Preferably, the water outlet pipe screw thread and the water inlet pipe screw thread are located on both sides of the outer wall respectively.

[0012] The utility model discloses a beneficial effect: the utility model simple structure, the cooling water cavity is left between the inner and outer wall, through the water outlet pipe screw thread and the water inlet pipe screw thread who links and communicates with the cooling water cavity, realizes the cooling water cavity circulation flow, effectively reduces the direct heat radiation of hot billet in continuous casting machine production and the erosion of high temperature water vapor, guarantees the roll gap control precision, promotes the service life of sensor, the inner and outer wall all adopts galvanized steel material support, prevents the water rust of long -term use generation, the inner wall and the base junction place leave sensor wire slot for sensor cable wiring, and the sensor wire line groove place uses fire clay seal, prevents heat radiation, water vapor etc. from entering from the cable gap, and the base has fixed bolt hole and can be used for fixing, and the base contact surface has a circle high temperature resistant rubber pad, prevents high temperature water vapor from entering erosion. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is structural schematic diagram of the utility model;

[0014] Fig. 2 It is sectional view of the structure of the utility model. PREFERRED EMBODIMENT EMBODIMENT

[0015] The embodiment provides a kind of for thick slab continuous casting machine fan-shaped section displacement sensor protection device, as shown in Figure Figs. 1-2 As shown, including protective cover body, protective cover body includes outer wall 1, inner wall 3 and base 6, outer wall, inner wall and base are all made of galvanized steel material, outer wall 1 and inner wall 3 are all installed on base 6, outer wall is sleeved on the outside of inner wall, and there is gap between the two, the gap is cooling water cavity 2, outer wall upper end and lower end each side is provided with water outlet pipe screw thread 5 and water inlet pipe screw thread 9 linked and communicated with cooling water cavity, and inner wall 3 is hollow 4 structure, for installing sensor, outer wall and base junction place leave wire slot for sensor cable wiring wire slot 8, and use fire clay seal, and the base contact surface has a circle high temperature resistant rubber pad 7, and the base is provided with several bolt holes 10 for fixing.

[0016] The embodiment is simple in structure, and the cooling water cavity is left between the inner and outer wall, and the water outlet pipe screw thread and the water inlet pipe screw thread linked and communicated with the cooling water cavity are used to realize the flow of the cooling water cavity, effectively reduce the direct heat radiation of hot billet in continuous casting machine production and the erosion of high temperature water vapor, guarantee the roll gap control precision, promote the service life of sensor, and the inner and outer wall are all supported by galvanized steel material, to prevent water rust from being generated for long-term use, the inner wall and the base junction place leave sensor wire slot for sensor cable wiring, and the sensor wire line groove place uses fire clay seal, to prevent heat radiation, water vapor etc. from entering from the cable gap, and the base has fixed bolt hole and can be used for fixing, and the base contact surface has a circle high temperature resistant rubber pad, to prevent high temperature water vapor from entering erosion.

[0017] In the off-line preparation stage of the fan-shaped segment, the thick slab continuous casting machine fan-shaped segment displacement sensor protection device is installed on the sensor, four sensors for each fan-shaped segment, four protection devices are used, the water outlet pipe of the first protection device can be connected with the water inlet pipe of the second sensor cover, and the fourth protection device water outlet can be externally discharged or returned to the cooling water system, effectively resisting the direct heat radiation of the hot billet and the erosion of the high-temperature water vapor in the continuous casting machine production, guaranteeing the roll gap control precision and prolonging the service life of the sensor,

[0018] In addition to the above-mentioned embodiments, the utility model can also have other implementation manners, and any technical scheme formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. A protective device for a displacement sensor in the sector section of a thick slab continuous casting machine, comprising a protective cover body, characterized in that, The protective cover body includes an outer wall, an inner wall, and a base. The outer wall and the inner wall are both mounted on the base. The outer wall is fitted over the inner wall with a gap between them, which is a cooling water cavity. The upper and lower ends of the outer wall are respectively provided with outlet pipe threads and inlet pipe threads that communicate with the cooling water cavity. A wire groove is provided at the connection between the outer wall and the base for the routing of sensor cables, and it is sealed with refractory putty. The contact surface of the base has a ring of high-temperature resistant rubber pad.

2. The protective device for a displacement sensor in the sector section of a thick slab continuous casting machine according to claim 1, characterized in that: The inner wall has a hollow structure for mounting sensors.

3. The protective device for a displacement sensor in the sector section of a thick slab continuous casting machine according to claim 1, characterized in that: The outer wall, inner wall, and base are all made of galvanized steel.

4. A protective device for a displacement sensor in the sector section of a thick slab continuous casting machine according to claim 1, characterized in that: The base is provided with several bolt holes for fixing.

5. A protective device for a displacement sensor in the sector section of a thick slab continuous casting machine according to claim 1, characterized in that: The threads of the outlet pipe and the inlet pipe are located on opposite sides of the outer wall.

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