KR100727097B1 - Automatic exchanging apparatus of thermometers affixed in gas piping - Google Patents

Abstract

The present invention relates to a thermometer automatic exchange device for a hot gas pipe, the exchange device of the thermometer to sense the temperature in the hot gas pipe through a thermometer inserted into the mounting hole formed in the hot gas pipe, the longitudinal direction of the thermometer And a cylinder (40) fixed to the hot gas pipe with a rod (42) being retracted, and rotatably mounted at an end of the rod (42) and with a thermometer (10) for replacement. Rotation 30 to support the limit switch 51, 52 provided to detect the upper and lower position of the swivel 30, the limit switch provided to detect the rotational position of the swivel 30 ( 69) and a rotating unit 60 that provides rotational power to the swivel 30, and is replaced with a new one when a thermometer installed in the hot gas pipe so as to sense temperature is broken. Can be.

Hot gas, thermometer, exchanger, converter, steel mill

Description

Automatic exchanging apparatus of thermometers affixed in gas piping}

1 is a configuration diagram showing a state in which a thermometer is mounted to measure the exhaust gas temperature inside the duct according to the prior art;

2 is a detailed cross-sectional view of the main portion of FIG.

Figure 3 is a perspective view showing a state in which the automatic thermometer exchange apparatus according to the present invention mounted on the hot gas pipe;

4 is an exploded perspective view of the main part of the present invention;

5 is an explanatory view of a thermometer replacement operation by the apparatus of the present invention; to be.

※ Explanation of symbols about main part of drawing ※

10, 10A: thermometer 12: wire

20: thermometer storage 30: swivel

32: thread 34: thermometer insertion hole

36: groove 40: cylinder

42: rod 44: support rod

51, 52: limit switch 60: rotating part

64 housing 65 drive motor                 

66: Rotating Gear 68: Striker

69: limit switch

The present invention relates to an automatic exchange device for a high temperature gas pipe thermometer, and more particularly, a high temperature gas pipe thermometer that can be replaced with a new one when a thermometer installed in a high temperature gas pipe to detect a temperature is broken. It relates to an automatic exchange device.

The hot exhaust gas generated during the blowing operation performed in the converter 110 of the steel mill is transferred to the dust collector 130 through the duct 120 which is a hot gas pipe.

Here, the blowing process can be more precisely and quickly controlled by quickly and accurately measuring the temperature, flow rate and pressure of the exhaust gas.

1 and 2 show a state in which a thermometer 140 is mounted on a predetermined portion of the duct 120 to measure the exhaust gas temperature inside the duct 120. In general, a plurality of thermometers 140 are installed. It guarantees accurate and reliable temperature measurement.

The thermometer 140 is inserted and fixed to be positioned inside the duct 120 through a mounting hole 122 formed in the duct 120. Here, reference numeral 124, which is not described, denotes a cooling pipe installed in the duct 120, 126 denotes a sealing member for preventing the gas of the duct 120 from leaking to the outside, and 128 denotes the An electric wire connecting the thermometer 140 to the transducer 150 to be described later is shown.

The temperature sensing result of the thermometer 140 is provided to the converter process control unit 160 through the converter 150, and the converter process control unit 160 detects the exhaust gas temperature and the like detected by the thermometer 140. The conversion process is controlled by computing various other factors.

In the above, it is necessary to continuously measure the exhaust gas temperature for a predetermined time of the converter process, and it is important to replace the new one quickly when a failure occurs in the thermometer 140.

In the related art, when a failure occurs in the thermometer 140, an operator directly removes the failed thermometer 140 by hand and installs a new thermometer.

However, the thermometer replacement method according to the prior art has a problem that the working environment is very poor because the worker is in close proximity to the field equipment where a large amount of dust is generated.

In addition, the gas of the duct 120 is leaked to the outside during the operation of the thermometer 140, the leaked gas is a toxic LD gas generated during the blow, which has a fatal adverse effect on the human body, so the risk of safety accident was very high. .

In addition, the risk of burns was very high due to the high temperature of about 1450 ° C. transmitted through the thermometer 140 during the operation of replacing the thermometer 140.

In addition, these operating conditions made it very difficult to change the thermometer quickly at an appropriate time by avoiding the thermometer changing operation, thus preventing continuous measurement of the flue gas temperature to be performed, thereby controlling the flow rate of the flue gas more precisely, as well as the blowing process itself. By making it difficult to control, the stable operation of the equipment was difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and an object thereof is to provide a system by automatically and quickly replacing a failure in a thermometer installed in a hot gas pipe to continuously and reliably measure the gas temperature in the pipe. It is to provide an automatic exchange device for a thermometer for the hot gas pipe which can operate stably.

As a technical configuration for achieving the above object, the present invention, in the exchange device of the thermometer to sense the temperature in the hot gas pipe through the thermometer inserted into the mounting hole formed in the hot gas pipe, in the longitudinal direction of the thermometer A cylinder fixed to the hot gas pipe, having a rod that is retracted forward and backward, rotatably mounted at the rod end and supporting an extra exchange thermometer together with the thermometer; By providing a limit switch provided to detect, a limit switch provided to detect the rotational position of the rotating table, and a rotating unit for providing rotational power to the rotating table, the automatic temperature exchanger for hot gas pipes .                     

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a schematic configuration diagram showing a state in which the automatic thermometer for hot gas pipe automatic exchange according to the present invention installed in the duct as a whole, a pair of thermometers 10 are inserted into a predetermined position of the duct 120, the duct 120 is mounted to measure the temperature inside, and it is also shown that a pair of thermometers 10A are further provided for exchange separately from these thermometers 10. Hereinafter, for convenience of description, a pair of thermometers inserted into the duct 120 and measuring temperature will be referred to as a 'in use thermometer' and another pair of thermometers will be referred to as a 'replacement thermometer'.

The thermometer 10 in use is fitted into a mounting hole (not shown) formed in the duct 120, and the temperature sensing unit, which is an inner end of the thermometer 10 in use, is positioned inside the duct 120. The temperature of the hot gas flowing through the 120 is provided in real time to the converter process control unit via the wire 12. Of course, the sealing member is provided in the thermometer mounting hole of the duct 120 to prevent the gas inside the duct 120 from leaking to the outside through the gap between the thermometer 10 in use and the mounting hole.

The exchange thermometer (10A) is fitted to the thermometer storage port 20 fixed to the duct 120, the temperature sensing unit which is one end of the exchange thermometer (10A) inside the thermometer storage port (20). Positioning prevents the temperature sensing portion of the thermometer from being damaged.

At this time, when the center position between the thermometer 10 in use is a reference point, the distance to the thermometer 10 in use and the distance to the thermometer storage port 20 are set equal to the reference point. When the thermometer 10 and the replacement thermometer 10A in use are removed from the mounting hole and the thermometer storage opening 20, the thermometers 10 and 10A should be in parallel with each other so that they can be pulled out in the same direction.

The thermometers (10) and (10A) remain fitted through the disk-shaped swivel (30) with threads 32 formed on the outer surface, and the disk-shaped swivel (30) is the thermometer (10) (10A). A thermometer fitting hole 34 is formed so that they can be fitted therethrough, and the center thereof is coupled to the end of the cylinder rod 42. In particular, the combination of the swivel 30 and the cylinder rod 42 is rotatable around the axial direction of the cylinder rod 42 without moving the swivel 30 in the axial direction of the cylinder rod 42 It is configured to be coupled to.

In addition, the cylinder 40 having the rod 42 is fixed to the duct 120 via a plurality of support rods 44.

And, the support rod 44 should be formed so as not to interfere with the behavior of the swivel 30.

It adopts a structure in which the support rod 44 can be fixed to the duct 120 to avoid the area where the movement of the swivel 30 is made, or as shown in the present invention, the support rod 44 is the swivel 30 ) May be adopted.

However, in the latter case, the swivel 30 has to form a long groove 36 in consideration of when the swivel 30 rotates, the groove 36 is centered on the cylinder rod 42 It is formed to have a predetermined length with one equal radius. In particular, in this case, the position of the thermometer 10 and the replacement thermometer 10A in use should be appropriately set in consideration of the length of the groove 36.

On the outer surface of the duct 120, upper and lower limit switches 51 and 52 which detect the degree of movement of the rotating table 30 by the cylinder rod 42 are mediated by the bracket 54. Is installed.

In addition, the outer surface portion of the duct 120 is provided with a rotating part 60 for rotating the swivel table 30 through the bracket 62, the rotating part 60 is a duct (by the bracket 62) When the housing 64 is fixed to the outer surface of the 120 and has a predetermined internal space, and the swivel 30 is raised to the upper limit position to operate the upper limit limit switch 51, the swivel 30 It consists of a rotary gear 66 installed to engage the thread 32, and a drive motor 65 mounted to the housing 64 to drive the rotary gear 66 in rotation.

Preferably, a predetermined gear train may be installed inside the housing 64 so that the rotational speed of the drive motor 65 may be appropriately decelerated and transferred to the rotary gear 66.

In addition, one end of the rotary shaft 66 of the rotary gear 66 extends to the outside of the housing 64 and forms a striker 68 on the rotary shaft, and the electrical contact therein is turned on or off by the striker 68. The limit switch 69 can be installed in the bracket 62.

Alternatively, the rotation speed of the drive motor 65 may be directly recognized and provided to the converter process control unit.

The operation of the present invention having the above configuration will be described.

The apparatus of the present invention is maintained as shown in FIG. 3 when the gas temperature inside the duct 120 is being measured, which advances the rod 42 of the cylinder 40 and is coupled to the rod 42. (30) is lowered, and by lowering the swivel table (30), the thermometers (10, 10A) fitted to the thermometer fitting hole (34) of the swivel table (30) are mounted to the mounting holes of the duct (120) and the thermometer storage port ( Insert them into each one.

In addition, the lowering degree of the swivel 30 is limited by the lower limit switch 52 installed on the bracket 54, the swivel 30 is lowered to lower the limit switch 52 installed on the bracket 54 In operation, this signal is provided to the converter process control unit, whereby the converter process control unit terminates the advancement of the cylinder 40.

That is, the thermometer 10 inserted into the mounting hole of the duct 120, the front end temperature sensing unit is located in the duct 120, thereby detecting the hot gas temperature in the duct 120 in real time to convert the converter process control unit To provide.

At this time, if any one of the thermometer 10 in use is broken, the broken thermometer no longer sends out temperature information, and thus the converter process control unit determines that the thermometer 10 is broken and sends a thermometer replacement signal. do.

As a result, first, the cylinder 40 moves backward, and the reverse of the cylinder 40 raises the rotating table 30, and the raising of the rotating table 30 causes the thermometer 10 mounted on the rotating table 30 to be moved. Raise all of (10A).

When the swivel table 30 is raised to operate the upper limit switch 51 installed on the bracket 54, the upper limit switch 51 sends an electrical signal to the converter process control unit, and the converter process control unit by this signal. Terminates the reverse of the cylinder 40.

The state is a state in which the thermometer (10, 10A) mounted on the swivel 30 is completely out of the mounting hole and the thermometer storage port 20 of the duct 120, and this state of the swivel 30 The thread 32 is engaged with the rotary gear 66 of the rotating part 60.

Subsequently, the converter process control unit drives the driving motor 65 of the rotating unit 60, and the rotational driving force of the driving motor 65 is transmitted to the rotating gear 66 through a gear train embedded in the housing 64. The rotating table 30 is rotated by the rotation of the rotary gear 66.

The thermometers 10 and 10A are also rotated by the rotation of the swivel 30, and when the exchange thermometer 10A reaches the position where the mounting hole of the duct 120 is formed, the rotary gear of the rotation unit 60 ( A striker 68 connected to 66 operates the limit switch 69 to send an electrical signal to the converter process control unit so that the converter process control unit stops the drive motor 65.

Subsequently, the cylinder 40 is advanced to allow the replacement thermometer 10A, that is, a new thermometer to be fitted into the mounting hole of the duct 120 so as to sense the hot gas temperature inside the duct 120.                     

Of course, after the cylinder 40 is advanced to restore the initial position by rotating the drive motor (65).

Then, the broken thermometer 10 is exchanged by hand when the blow job of the converter is completed.

As described above, according to the automatic exchanger for a high temperature gas pipe thermometer according to the present invention, an extra thermometer is installed in the high temperature gas pipe to provide an extra thermometer prepared in advance when the thermometer measuring the temperature of the hot gas is damaged. It has an effect that can be exchanged quickly.

This has the effect of solving the conventional problem that the risk of safety accident was very high by replacing the thermometer by hand in a harsh environment.

In addition, it is possible to control the equipment very reliably by quickly replacing the broken thermometer.

Claims (2)

In the exchange device of the thermometer to detect the temperature in the hot gas pipe through the thermometer inserted into the mounting hole formed in the hot gas pipe, A cylinder 40 fixed to the hot gas pipe and a rod 40 which is forward and backward in the longitudinal direction of the thermometer are rotatably mounted at the end of the rod 42 and are provided together with the thermometer 10. Rotation 30 for supporting the replacement thermometer (10A), the limit switch 51, 52 provided to detect the upper and lower position of the swivel 30 and the rotational position of the swivel 30 Limit switch 69 provided to detect, and the rotary unit 60 for providing rotational power to the swivel table (30) characterized in that the automatic gas exchanger for hot gas pipes. The rotary gear 66 of claim 1, wherein a thread 32 is formed on an outer circumferential surface of the swivel 30, and the swivel 60 is engaged with the thread 32 of the swivel 30 so as to be rotatable. , Automatic rotation apparatus for a hot gas pipe, characterized in that made of a drive motor (65) for providing rotational power to the rotary gear (66).

Images