JP2535731Y2 - Furnace lid installation detector for coke oven - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an apparatus for detecting the attachment of a furnace lid to a coke oven. In particular, the use of an air sensor can improve the reliability of the detection of a coke oven. The present invention relates to a furnace lid attachment detection device.

[Prior Art] At the time of a furnace cover mounting operation to a coke oven, which is the last operation of coke extrusion work in a coke oven, the relative position of a furnace cover and a lifter (furnace cover removal machine) is detected and determined, It is essential to check that the furnace lid is securely attached to the coke oven. This is because if the furnace lid rides on the mounting portion, there is a risk that an accident such as hanging the furnace lid may occur. As means for checking the attachment of the furnace lid to the current coke oven, there are manned confirmation by a worker in front of the furnace, confirmation means by a mechanical detection device using limit switches, or confirmation means by an image processing device using a TV camera Etc. However, in consideration of the working environment around the coke oven, mobile machines such as an extruder and a guide car for the coke oven tend to be labor-saving or unmanned, so that the presence of manpower has been reduced.

Furnace lid mounting detection devices using limit switches are poor in reliability because of the poor environment in the place of use and are hardly used. For example, in the installation checking device according to Japanese Utility Model Publication No. 61-38897, which employs a scissor type lever, two scissor levers are operated by a cylinder, and the angle of these levers is detected by a limit switch, so that a kanuki and a kanuki receiver can be received. The relative position is to be detected. However, there is a problem in that dust or tar enters between the levers and the levers do not operate, often causing malfunctions.

Furthermore, such a mechanical detection device requires a hydraulic or pneumatic cylinder and piping, which is expensive, and the limit switch is difficult to adjust because the limit switch is detected via a scissor lever. There's a problem.

As a detecting device using a television camera, Japanese Patent Application Laid-Open
There is also a method according to 64-20292, but there are also problems in detection stability due to smoke, dust, tar and the like, changes in brightness, etc., and in terms of price.

[Problems to be solved by the present invention] The present invention has been made in view of the above-described problems.
Provided is a coke oven furnace lid detection device that has a simple configuration, improves reliability, can be supplied at a lower cost, and enables labor saving and unmanned use of an extruder and a guide car around the coke oven. As an issue.

[Means for Solving the Problems] That is, the present invention relates to a coke oven furnace lid detection device for detecting whether or not the kanuki provided on the furnace lid is correctly mounted on the kanuki receiver provided on the coke oven. hand,
An air sensor is attached to a lifter that lifts the furnace lid, and air is injected from the air sensor toward a proper mounting position of the kanuki to detect a proper mounting of the kanuki. It is a furnace lid attachment detection device.

[Action] In the apparatus for detecting the installation of a furnace lid of a coke oven according to the present invention, air at a predetermined pressure is jetted from an air sensor to a kanuki part of the furnace lid, and the back pressure is detected, whereby the distance or relative distance between the air sensor and the kanuki is measured. The position can be detected. Therefore, if the air sensor is attached to a position where the normal mounting position of the cannus to the cannus receiver can be detected, and if the air sensor can detect the cannus, it can be determined that the cannus has been mounted at the normal position.

In other words, the furnace lid mounting detection device according to the present invention employs an air sensor as a non-contact type detection mechanism without employing a mechanical detection mechanism as in the related art, so that it is affected by the environment around the coke oven. Without this, it is possible to reliably confirm the installation of the furnace lid with high reliability.

Furthermore, compared to a detection device based on image processing using a television camera, it can be provided with a simple configuration and at low cost.

[Embodiment] Next, an apparatus 1 for detecting the installation of a furnace lid in a coke oven according to an embodiment of the present invention will be described with reference to Figs.

FIG. 1 is a perspective view showing an entire system of a furnace lid mounting detection device 1. The furnace lid mounting detection device 1 includes an indicator unit 2 having an amplifier and an arithmetic circuit, and a tuning circuit having an air-electric conversion unit. It has a unit 3, an air sensor 4, an air purifying and stabilizing unit 5, and an air compressor 6.

The air purifying and stabilizing unit 5 includes an air compressor 6
Is converted into dry air that is dried and supplied to the air sensor 4.

The air sensor 4 has a tip nozzle section 4A and two air lines, that is, an injection air line 4B and a detection air line 4C, as shown in an enlarged manner in FIG. The air is constantly injected at a predetermined pressure from the injection port 4D of the injection air line 4B of one system, and the object S approaching the injection port 4D
The other one detection air line 4C sensing port
In 4E, the change in back pressure is considered. Thus, it is possible to detect the distance between the object S and the air sensor 4 and at the same time check the presence or absence of the object S.

The tuning circuit unit 3 converts the back pressure into an electric signal and transmits the electric signal to the indicator unit 2.

The indicator unit 2 receives the signal S
And outputs a detection signal according to a predetermined reference.

Next, a coke oven 10 to which the air sensor 4 is attached will be described with reference to FIGS.
FIG. 3 is a plan view of the coke oven 10, and FIG.
FIG. 5 is a front view of the same.

As shown in FIG. 3, the furnace opening 11 of the coke oven 10 has a furnace lid.
12 is detachably attached. As shown in FIG.
12 is equipped with a rug piece 13 and a kanuki 14.
As shown in FIG. 3 and FIG. 4, the furnace lid 12 is attached to the coke oven 10 by engaging the kanuki 14 with the kanuki receiver 15 fixed to the coke oven 10.

As shown in FIG. 4, when mounting the furnace lid 12,
A hook 17 of a lifter (furnace lid detacher) 16 attached to a moving machine is moved up and down by a hydraulic cylinder (lifter vertical mechanism) 18, and the hook 17 is engaged with the lug piece 13 to lift the furnace lid 12. is there. 4 and 5, the kanuki 14 in engagement with the kanuki receiver 15 is shown by a virtual line, and the state of being lifted by the hook 17 is shown by a solid line.

After the furnace lid 12 is lifted in this manner, the lifter 16 is retracted together with the furnace lid 12, and the furnace port 11 is opened.

After the coke is extruded from the coke oven 10 and the portion of the furnace opening 11 is cleaned, the lifted furnace lid 12 is pushed into the inside from the furnace opening 11 and the hook of the lifter 16 is hooked.
17 moves away from rug piece 13 by lowering,
14 is engaged with the cannula receiver 15 to complete the mounting of the furnace lid 12. In order to securely attach the furnace lid 12 to the furnace opening 11 of the coke oven 10, it is necessary that the kanuki 14 is securely engaged with the kanuki receiver 15.

In addition, a pair of the air sensors 4 is mounted on the fixed frame 19 side of the lifter 16 via a sensor mounting bracket 20.

Thus, the relative position of the kanuki 14 to the kanuki receiver 15 in a state where the furnace lid 12 is normally attached to the coke oven 10 is always in a fixed relationship. For this reason, the mounting position of the air sensor 4 is set to a position that matches the state where the kanuki 14 is normally mounted on the kanuki receiver 15. That is, the air sensor 4
After that, the air is injected toward the position where the kanuki 14 should be properly mounted. Therefore, this kanuki
By detecting 14, it is possible to confirm the normal or abnormal mounting of the kanuki 14.

The procedure of this detection is shown in FIG. 6 to FIG. FIG. 6 is a schematic explanatory view showing the state when the furnace lid is loaded, FIG. 7 is a state when the furnace lid is normally mounted, and FIG.

As shown in FIG. 6, when the furnace lid 12 is mounted, the coke oven 10 is lifted with the hook 17 of the lifter 16 lifting the rug piece 13, that is, with the kanuki 14 floating.
Proceed to Kannuki Reception 15.

As shown in FIG. 7, when the lifter 16 is suspended by the action of the hydraulic cylinder 18 and the furnace lid 12 is lowered,
14 also goes down together, and Kannuuki 14 is normally attached to Kannuki receptacle 15. By injecting air from the air sensor 4 in synchronization with the operation of the hook 17 or the lifter 16, the cannula 14 can be detected by the air sensor 4 at a stage where the air sensor 4 is normally engaged.

As shown in FIG. 8, when the cannus 14 do not engage with the normal position of the cannus receiver 15, the air sensor 4 cannot detect the cannus 14 and detects that the cannus 14 are attached in an abnormal state. It is possible.

In addition, a detection piece (not shown) capable of grasping a relative positional relationship with the kanuki 14 at a predetermined position of the kanuki 14 as necessary.
May be attached, air may be jetted toward the detection piece, and the kanuki 14 may be detected via the detection piece.

As described above, the use of the air sensor 4 eliminates the need for a mechanically operating portion for detecting the canker 14, thereby enabling reliable detection work even in a bad environment having dust, tar, and the like. Is improved. Further, as a result of the improvement in reliability, introduction to a labor-saving / unmanned system becomes easy.

In the present invention, the mounting position of the air sensor may be one, but by using two, the safety and reliability can be further improved.

[Effects of the Invention] As described above, according to the present invention, since the air sensor is used as a means for detecting the attachment of the furnace lid, it is influenced by the working environment unlike the case of using a mechanical or television camera. Therefore, the reliability of detection can be improved with a simple configuration and at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coke oven furnace lid detection device 1 according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the tip of an air sensor 4, and FIG. 3 is a plan view of a coke oven 10. 4, FIG. 4 is a side view, FIG. 5 is a front view, FIG. 6 to FIG.
FIG. 6 is a schematic explanatory view showing the state of charging the furnace lid, FIG. 7 is a state of normal mounting, and FIG. 8 is a state of abnormal mounting. 1 Detector for installation of furnace lid of coke oven 2… Indicator unit 3… Tuning circuit unit 4… Air sensor 4A… Tip nozzle 4B… Air line for injection 4C… Air line for detection 4D… Injection port 4E Sensing port 5 Air purifying and stabilizing unit 6 Air compressor 10 Coke oven 11 Furnace opening 12 Furnace lid 13 Lug piece 14 Kannuki 15 Kannuki receptacle 16 Lifter (furnace lid removal machine) 17 Hook 18 Hydraulic cylinder (lifter up / down mechanism) 19 Fixed frame for lifter 16 20 Sensor mounting bracket S Object

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shugo Katano 19, Natsushimacho, Yokosuka City, Kanagawa Prefecture Sumitomo Heavy Industries Machinery Co., Ltd. Oppama Shipyard (56) References 63-110349 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A coke oven lid detection device for detecting whether or not a cannus provided on a furnace lid is correctly mounted on a cannus receiver provided in a coke oven, comprising: a lifter for lifting the furnace lid. A furnace cover mounting detection device for a coke oven, wherein an air sensor is mounted, and air is injected from the air sensor toward a proper mounting position of the kanuki, so that the proper mounting of the kanuki can be detected.