Mounting structure of crystallizer liquid level electromagnetic sensor

Abstract

The utility model discloses an installation structure of a crystallizer liquid level electromagnetic sensor, which comprises a sensor body and a crystallizer, a clamp holder is fixedly arranged on the crystallizer, a guide hole and a spring hole are arranged in the clamp holder, a spring is arranged in the spring hole, a spring shaft which abuts against the spring is arranged in the spring hole in a sliding mode, and the sensor body is fixedly arranged on the crystallizer. The top of the spring shaft is provided with a threaded hole, the sensor body is clamped on the cover plate, an upper insulating spacer is arranged between the inner top wall of the cover plate and the sensor body, a side insulating spacer is arranged between the inner side wall of the cover plate and the sensor body, and the cover plate extends forwards and extends out of the sensor body. A countersunk bolt is rotationally clamped on the cover plate, the countersunk bolt penetrates through the cover plate and then is in threaded connection with the threaded hole in the spring shaft, and the cover plate and the sensor body clamped in the cover plate do not make contact with the crystallizer. The utility model has the advantage that the connection stability of the sensor body and the crystallizer can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of metallurgy, and in particular to the installation structure of an electromagnetic sensor for liquid level in a crystallizer. Background Technology

[0002] The crystallizer level electromagnetic sensor is an automatic device used in continuous casting machines in steel plants to detect the molten steel level. In the continuous casting machine's operation control system, the electromagnetic sensor is connected to the control cabinet via a communication cable. By debugging the program and conducting simulations to determine the parameters, the electromagnetic sensor can operate according to the debugged program and detect the molten steel level.

[0003] During continuous casting, the crystallizer vibrates. Electromagnetic sensors detect and analyze these vibrations, correcting and compensating for the liquid level measurement results. This ensures accurate measurement of the actual molten steel level, avoiding measurement errors caused by vibration and guaranteeing smooth production and product quality. However, traditional electromagnetic sensors are directly bolted to the crystallizer. Prolonged vibration can cause these bolts to loosen due to resonance, leading to displacement of the sensor and ultimately measurement errors. Utility Model Content

[0004] The purpose of this invention is to provide an installation structure for a crystallizer level electromagnetic sensor that can prevent measurement errors caused by loosening between the sensor and the crystallizer.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an installation structure for a crystallizer liquid level electromagnetic sensor, comprising: a sensor body and a crystallizer, a clamp fixedly mounted on the crystallizer, a guide hole and a spring hole connected in the clamp, a spring in the spring hole, a spring shaft slidably mounted in the spring hole, the spring shaft abutting against the spring, the spring shaft compressing the spring and then being inserted into the guide hole, a threaded hole being opened at the top of the spring shaft, the sensor body being mounted on a cover plate, an upper insulating gasket being provided between the inner top wall of the cover plate and the sensor body, a side insulating gasket being provided between the inner side wall of the cover plate and the sensor body, the cover plate extending forward beyond the sensor body, a countersunk bolt being rotatably mounted on the cover plate, the countersunk bolt passing through the cover plate and threadedly connected to the threaded hole on the spring shaft, the cover plate and the sensor body mounted in the cover plate not contacting the crystallizer.

[0006] Furthermore, in the aforementioned installation structure of the crystallizer liquid level electromagnetic sensor, a support plate is provided on the front side of the cover plate, and a plastic pad is clamped on the bottom wall of the support plate, with the plastic pad abutting against the crystallizer.

[0007] Furthermore, in the aforementioned installation structure of the crystallizer liquid level electromagnetic sensor, two positioning grooves are symmetrically arranged on the left and right sides of the top of the sensor body, and two positioning shafts are symmetrically arranged on the inner top wall of the cover plate. The two positioning shafts on the cover plate are respectively inserted into the two positioning grooves of the sensor body.

[0008] Furthermore, in the aforementioned installation structure of the crystallizer liquid level electromagnetic sensor, a limiting groove communicating with a spring hole is provided at the bottom of the clamp, two limiting blocks are symmetrically arranged on the left and right sides of the limiting groove, a limiting plate is provided at the bottom of the spring shaft and is movably locked in the limiting groove, and two slots are symmetrically arranged on the left and right sides of the limiting plate, and the two slots on the limiting plate are respectively in movable contact with the two limiting blocks on the limiting groove.

[0009] Furthermore, in the aforementioned installation structure of the crystallizer liquid level electromagnetic sensor, sealing rings are provided on the inner walls of both the guide hole and the spring hole, and the spring shaft is tightly attached to the sealing rings in the guide hole and the spring hole.

[0010] Furthermore, in the aforementioned installation structure of the crystallizer liquid level electromagnetic sensor, the connection structure between the countersunk bolt and the cover plate is as follows: a T-shaped hole is provided on the cover plate, a transition ring is inserted in the T-shaped hole, a locking bushing is inserted in the transition ring, an insulating bushing is inserted between the transition ring and the locking bushing, the countersunk bolt passes through the locking bushing, and the locking bushing is tightened on the countersunk bolt under the tension of the insulating bushing.

[0011] Furthermore, in the aforementioned installation structure of the crystallizer liquid level electromagnetic sensor, a buffer washer is provided in the transition ring, and an insulating bushing and a locking bushing abut against the buffer washer.

[0012] The advantages of this invention are as follows: When the crystallizer vibrates, the clamp will vibrate along with the crystallizer, and the cover plate will also vibrate along with the sensor body under the transmission action of the support plate. However, because the spring in the clamp absorbs energy and generates large damping, the vibration amplitude between the clamp and the spring shaft is reduced. The spring shaft is connected to the cover plate through countersunk bolts. Reducing the vibration amplitude of the spring shaft is equivalent to indirectly reducing the vibration amplitude of the cover plate and the sensor body clamped in the cover plate, thereby suppressing the resonance phenomenon between the clamp, the cover plate and the sensor body. The countersunk bolts in the cover plate and the spring shaft can be prevented from loosening due to the reduction of vibration amplitude, thereby enhancing the connection stability between the sensor body and the crystallizer. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation structure of the crystallizer liquid level electromagnetic sensor described in this utility model.

[0014] Figure 2 yes Figure 1A schematic diagram of the structure after removing one of the cover plates.

[0015] Figure 3 yes Figure 1 A cross-sectional view of the connection structure between the middle cover plate and the sensor body.

[0016] Figure 4 yes Figure 1 A cross-sectional view of the connection structure between the middle cover plate and the sensor body from another direction.

[0017] Figure 5 This is a cross-sectional structural diagram of the clamp.

[0018] Figure 6 This is a cross-sectional schematic diagram of the connection structure between the spring shaft and the countersunk bolt.

[0019] Figure 7 This is a cross-sectional structural diagram of the cover plate. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0021] like Figures 1 to 7 As shown, the installation structure of the crystallizer liquid level electromagnetic sensor of this utility model includes: a sensor body 1 and a crystallizer 2. A clamp 3 is fixedly installed on the crystallizer 2. A guide hole 31, a spring hole 32, and a limiting groove 33 are sequentially arranged from top to bottom in the clamp 3. Two limiting blocks 34 are symmetrically arranged on the left and right sides of the limiting groove 33. A spring 35 is installed in the spring hole 32. A spring shaft 4 is slidably installed in the spring hole 32 and abuts against the spring 35. A [missing information - likely a device or structure] is installed at the bottom of the spring shaft 4. A limiting plate 41 is movable and locked in the limiting groove 33. Two slots 42 are symmetrically arranged on the left and right sides of the limiting plate 41. Under the elastic force of the spring 35, the two slots 42 on the limiting plate 41 respectively make contact with the two limiting blocks 34 on the limiting groove 33. The limiting blocks 34 cooperate with the slots 42 on the limiting plate 41 to provide a lower limit for the spring shaft 4. The cooperation between the limiting plate 41 and the limiting groove 33 provides an upper limit for the spring shaft 4, ensuring that the spring shaft 4 can only move within a limited stroke. After compressing the spring 35, the spring shaft 4 is locked into the guide hole 31. Sealing rings 36 are provided on the inner walls of both the guide hole 31 and the spring hole 32. The spring shaft 4 is tightly attached to the sealing rings 36 in the guide hole 31 and the spring hole 32, improving the stability of the spring shaft 4.

[0022] A threaded hole 43 is provided at the top of the spring shaft 4. The sensor body 1 is clamped onto the cover plate 5. An upper insulating gasket 51 is provided between the inner top wall of the cover plate 5 and the sensor body 1. A side insulating gasket 52 is provided between the inner side wall of the cover plate 5 and the sensor body 1. Two positioning grooves 11 are symmetrically arranged on the left and right sides of the top of the sensor body 1. Two positioning shafts 53 are symmetrically arranged on the inner top wall of the cover plate 5. The two positioning shafts 53 on the cover plate 5 are respectively inserted into the two positioning grooves 11 of the sensor body 1, thereby fixing the sensor body 1 in the cover plate 5. The cover plate 5 extends forward and protrudes from the sensor body 1. A countersunk bolt 54 is rotatably clamped on the cover plate 5. After passing through the cover plate 5, the countersunk bolt 54 is threadedly connected to the threaded hole 43 on the spring shaft 4. The connection structure between the countersunk bolt 54 and the cover plate 5 is as follows: a T-shaped hole 55 is provided on the cover plate 5, and a transition collar 56 is clamped in the T-shaped hole 55. A locking bushing 57 is fitted into the transition sleeve 56, and an insulating bushing 58 is fitted between the transition sleeve 56 and the locking bushing 57. A buffer washer 59 is provided in the transition sleeve 56. The insulating bushing 58 and the locking bushing 57 abut against the buffer washer 59. The countersunk bolt 54 passes through the locking bushing 57. Under the tension of the insulating bushing 58, the locking bushing 57 is tightened onto the countersunk bolt 54, thereby improving the connection strength between the countersunk bolt 54 and the cover plate 5. When the countersunk bolt 54 is vibrated, the buffer washer 59 can absorb energy and play a role in absorbing energy and buffering the countersunk bolt 54. A support plate 6 is provided on the front side of the cover plate 5. A plastic pad 61 is clamped on the bottom wall of the support plate 6. The plastic pad 61 abuts against the crystallizer 2. The plastic pad 61 can prevent the high temperature in the crystallizer 2 from being transferred to the cover plate 5 and affecting the sensor body 1. The cover plate 5 and the sensor body 1 clamped in the cover plate 5 do not come into contact with the crystallizer 2.

[0023] When crystallizer 2 vibrates, clamp 3 vibrates along with crystallizer 2, and cover plate 5 also vibrates along with sensor body 1 under the transmission action of support plate 6. However, because spring 35 in clamp 3 generates large damping by absorbing energy, it reduces the vibration amplitude between clamp 3 and spring shaft 4. Spring shaft 4 is connected to cover plate 5 by countersunk bolt 54. Reducing the vibration amplitude of spring shaft 4 is equivalent to reducing the vibration amplitude of cover plate 5 and sensor body 1 clamped in cover plate 5, thereby suppressing the resonance phenomenon between clamp 3, cover plate 5 and sensor body 1. The reduction in vibration amplitude between countersunk bolt 54 in cover plate 5 and spring shaft 4 can prevent loosening, thereby enhancing the connection stability between sensor body 1 and crystallizer 2.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A mounting structure for a mold level electromagnetic sensor, comprising: The utility model relates to a sensor body and crystallizer, characterized by: a holder is fixedly arranged on the crystallizer, a guide hole and a spring hole are arranged in the holder and are connected, a spring is arranged in the spring hole, a spring shaft is slidably arranged in the spring hole and abuts against the spring, the spring shaft is clamped into the guide hole after compressing the spring, a threaded hole is formed in the top of the spring shaft, the sensor body is clamped on the cover plate, an upper insulating gasket is arranged between the inner top wall of the cover plate and the sensor body, a side insulating gasket is arranged between the inner side wall of the cover plate and the sensor body, the cover plate extends forward beyond the sensor body, a countersunk bolt is rotatably clamped on the cover plate, the countersunk bolt is threadedly connected with the threaded hole on the spring shaft after penetrating through the cover plate, and the cover plate and the sensor body clamped in the cover plate are not in contact with the crystallizer.

2. The installation structure of a mold level electromagnetic sensor according to claim 1, characterized by: A support plate is arranged on the front side of the cover plate, and a plastic pad is clamped on the bottom wall of the support plate and abuts against the crystallizer.

3. The installation structure of a mold level electromagnetic sensor according to claim 1, characterized by: Two positioning grooves are symmetrically arranged on the left and right sides of the top of the sensor body, and two positioning shafts are symmetrically arranged on the inner top wall of the cover plate and are respectively inserted into the two positioning grooves of the sensor body.

4. The installation structure of a mold level electromagnetic sensor according to claim 1, characterized by: A limiting groove is arranged in the bottom of the holder and is connected with the spring hole, two limiting blocks are symmetrically arranged on the left and right sides of the limiting groove, a limiting plate is movably clamped in the limiting groove and is arranged at the bottom of the spring shaft, and two clamping grooves are symmetrically arranged on the left and right sides of the limiting plate and are respectively in movable contact with the two limiting blocks on the limiting groove.

5. The installation structure of a mold level electromagnetic sensor according to claim 1, characterized by: A sealing ring is arranged on the inner side wall of the guide hole and the spring hole, and the spring shaft is tightly attached to the sealing rings in the guide hole and the spring hole.

6. The installation structure of a mold level electromagnetic sensor according to claim 1, characterized by: The connecting structure between the countersunk bolt and the cover plate is that a T-shaped hole is arranged on the cover plate, a transition sleeve ring is clamped in the T-shaped hole, a locking bushing is clamped in the transition sleeve ring, an insulating bushing is clamped between the transition sleeve ring and the locking bushing, the countersunk bolt is arranged in the locking bushing, and the locking bushing is tightly clamped on the countersunk bolt under the tension of the insulating bushing.

7. The installation structure of a mold level electromagnetic sensor according to claim 6, characterized by: A buffer washer is arranged in the transition sleeve ring, and the insulating bushing and the locking bushing abut against the buffer washer.

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