JP5504330B1 - Cyclone type lifting device - Google Patents

Abstract

As a suspension cleaning device for lining of refractory materials, etc., it has a suspension mechanism that does not rely on manual work, and is used for inner wall refractory materials and linings of a vertical cylindrical structure having a complicated structure inside such as a cyclone device. A lifting device that enables lifting work and prevents the peeled-off refractory material from splashing.
A center riser is fixed to a substantially central portion of an outer tube by using a linearly connected portion of a split lance inserted from an outer tube as a central axis, and the distal end side of the split lance can be rotated around the axis as a rotation axis. Rotational movement is possible along the circular shape of the inner wall of the cyclone device. The nozzle head portion also rotates in the horizontal or vertical direction.
[Selection] Figure 1

Description

  The present invention relates to a device for attaching a refractory material such as a refractory material, cement or mortar, or a lining. In particular, the present invention relates to an apparatus for suspending and cleaning refractory materials and linings on the inner wall of a cyclone apparatus or the like that is a vertical cylindrical structure such as an oil refinery plant distillation tower.

  The inside of a chemical reaction type apparatus such as a chimney, a distillation column of an oil refining apparatus, or a fluid catalytic cracking apparatus becomes very hot, and a refractory material mainly composed of silica ceramic is coated and coated on the inner wall surface of the apparatus. These refractory materials have tough and stable physical properties compared to general structural materials, but they deteriorate and wear due to aging under severe conditions. In addition, if the fireproof performance decreases due to deterioration over time, the thermal shock to the original structure increases and becomes a serious problem. Therefore, it is necessary to periodically repair or update the fireproof material to a new material.

  In order to renew the above refractory material, all the deteriorated refractory material must first be removed. However, the refractory material inside the chemical reaction type device is thickly applied in a honeycomb-like metal net (honeycomb for fixing refractory material: registered trademark Hex-Mesh) on the inner wall so that it does not peel off even in harsh high heat reaction environments. It is fixed tightly.

  Therefore, although it has deteriorated, it is not easy to peel off the refractory material for a new update. Therefore, the suspension method must be used for so-called building construction, in which a cement or concrete structure is peeled off by a physical method using a powerful cutting tool. However, it is practically difficult to bring a suspension device or a cutting device into a chimney or cyclone device. In addition, a machine that uses such a cutting tool is a suspension method such as a chimney or cyclone device. There is a risk of damaging the original internal structure.

  For the reasons described above, in the renewal of the refractory material in the chemical reaction tower having a complicated structure or the cyclone apparatus, it is the actual situation that the refractory material is usually applied only manually using a hammer or only. For this reason, the lifting work efficiency in a dangerous structure is very bad, and the fragments and powder of the refractory material which has peeled off scatters, resulting in a great danger to the health of the worker. Further, the inside of the closed cyclone has to consider the danger of oxygen deficiency, residual toxic gas, etc., and the work environment is inferior.

  Furthermore, there are many cases where the cyclone device has a complicated structure that cannot be entered by a person. For example, a typical cyclone device has a cylindrical outer tube at the center of the upper top surface of the vertical overall structure, and the outer tube and the cyclone device main body have a double cylindrical structure. The hanging work of the fireproof material on the wall surface and the top surface between the outer wall of the outer tube and the inner wall of the cyclone device main body in a cylindrical structure is technically very difficult and involves a great risk.

  Prior art documents, Patent Document 2 and Patent Document 3, propose a refractory material or lining suspension method using physical force by high-pressure water jet. These technical proposals have a cylindrical structure with a substantially constant inner diameter. The construction of the inner wall of the object is the basic object, and it is not possible to support the lifting work inside the complex reaction tower such as the cyclone device.

  Further, in the conventional suspension method using high-pressure water injection, the position of the injection nozzle head is fluctuated due to the wall surface reflection pressure of the high-pressure water injection pressure. The greater the pressure to be injected, the greater the reflected pressure, and it is not easy to keep the direction and position of the injection nozzle in a necessary direction. It was difficult to cope with suspension work in a complicated structure such as a heavy cylinder.

  However, the method using high-pressure water injection has a great merit. In suspension work such as refractory materials and linings, dropping, scattering, and dusting of the release material and pulverized material are major problems. When the suspension method by high-pressure water injection is used, water injection is performed at the same time, so that it is very effective in preventing these scattering and dust.

  As described above, there are currently no suspension devices specialized for lining work such as refractory materials on the inner wall of complex structures such as chemical reaction towers and cyclone equipment, and work efficiency is good and good hang in a safe environment. Development of a new lifting device that can carry out the work is desired.

Japanese Examined Patent Publication No. 7-103701 Japanese Patent Application Laid-Open No. 2004-232956 JP 2007-308960 A

  In view of such circumstances, in the present application, as a suspending device for refractory materials, etc., a vertical cylindrical structure having a complex structure portion inside having a suspension mechanism that does not rely on manual work, such as a cyclone device. The challenge is to realize a suspension device that enables efficient suspension work of the inner wall refractory material and lining and prevents the peeled refractory material from scattering.

  The suspension cleaning apparatus according to the present invention uses a suspension method for high-pressure water injection in which high-pressure water is sprayed from the injection nozzle onto the surface of the refractory material by using a physical impact force. By rotating and moving up and down, the refractory material having a large area can be efficiently suspended without leaving unsuspended. In particular, high-pressure water that can efficiently suspend the inner wall refractory material or lining of a vertical cylindrical structure having a special shape such as a mortar shape or a double cylinder shape like a cyclone device and can simultaneously wash the wall surface is suspended. A cleaning device is provided. As shown in FIG. 1, the suspension washing apparatus according to the present invention includes an external control device including a hydraulic motor 5, a high-pressure water swivel 3, a control box 7 and the like, and a split lance 12 for introducing high-pressure water, a nozzle 11 and a nozzle head portion 10 and a center riser 9 for fixing them.

  The high-pressure water suspension cleaning apparatus of the present invention connects a split lance containing high-pressure water from the outer tube 8 (FIG. 1) on the ceiling of the cyclone apparatus and enters the cyclone apparatus to cover the fireproof material of the cyclone apparatus. The high pressure water jet nozzle head portion at the tip of the split lance connected to the suspension surface is guided, and high pressure water is jetted from the nozzle to perform the fishing and cleaning operations.

  Divided lances (having a piping pipe function) connected in this way have a fixed length as a basic unit and have various shapes such as I-shaped, L-shaped, U-shaped or S-shaped. The position of the high-pressure water jet nozzle head at the tip can be guided to the suspension surface inside the cyclone device having a complicated shape.

  The present invention is fixed to the center of the outer tube by the center riser with the straight connecting portion of the split lance inserted from the outer tube as the central axis, and the tip of the split lance with the axis of the straight connecting portion as the rotation axis is The high-pressure water is a suspension cleaning device characterized in that the high-pressure water injection nozzle head can be rotated and moved along the circular shape of the inner wall of the cyclone device.

  In the present invention, a plurality of injection nozzles can be installed at the tip of the high-pressure water injection nozzle head, and the injection direction of the high-pressure water can also be set for individual nozzle angles. High-pressure water injection can be performed in a three-dimensional direction. In particular, the high-pressure water is a suspension washing device characterized in that only the high-pressure water jet nozzle head at the tip can be rotated with respect to the shaft of the connected split lance.

  Further, according to the present invention, in the arrangement of the injection nozzles of the high-pressure water injection nozzle head section having a plurality of high-pressure water injection nozzles, the injection positions of the respective injection nozzles are arranged at the same distance from their center positions, and the center positions are set. High pressure spray water by being arranged diagonally or 360 degrees equally divided from the center position on the same plane circumference and so that the respective injection directions are jetted in the opposite direction from the center position. It is characterized by having a high-pressure water spray nozzle head part capable of canceling out or attenuating each other's reaction pressure, which is a reflection pressure of the spray pressure received by each spray nozzle at the time of spraying.

  The high-pressure water according to the present invention eliminates dangerous manual work such as using a hammer or only by using a suspension cleaning device, and enables lining of refractory materials and the like without damaging the structure body. In addition, the inner wall refractory material lining of the vertical cylindrical structure that has a complicated shape such as a mortar shape or double cylinder shape like a cyclone device can be efficiently and safely suspended, and the high pressure that can wash the wall surface simultaneously The water can be suspended and washed.

  By installing the center riser on the inner diameter of the outer tube that is smaller than the inner diameter of the cyclone device, the shaft of the connected split lance is firmly fixed. Therefore, the nozzle head due to the vibration of the nozzle head section 10 and the reflected pressure of high-pressure water It is possible to prevent shaking and position fluctuation of the part. (Refer to FIG. 1) Similarly, since it rotates about a split lance to which only the nozzle head portion is connected, the force that induces the positional displacement of the nozzle head portion due to the reflected pressure of the wall surface of the high-pressure jet water is released in the rotational direction. be able to. As a result, the high-pressure water injection direction and the injection angle of the nozzle are stabilized, and the attack by the high-pressure water hits the wall surface refractory material at an accurate and intended angle.

  In addition, by continuing high-pressure water injection while the nozzle head part rotates uniformly, the same wall surface can be suspended repeatedly, and the entire wall surface can be suspended and washed efficiently by moving the entire split lance up and down. . Since high-pressure water injection is used, there is little scattering of refractory material and powder, and it flows with water, so the working environment is greatly improved.

The cyclone which concerns on one Embodiment of this invention is drawing for demonstrating one Example which installed the suspension washing apparatus in the cyclone apparatus, and a nozzle head part is a figure which shows horizontal rotation. The cyclone which concerns on one Embodiment of this invention is drawing for demonstrating one Example which installed the suspension washing apparatus in the cyclone apparatus, and a nozzle head part is a figure which shows vertical rotation. It is drawing for demonstrating the rotation motion of the nozzle head part which concerns on one Embodiment of this invention, and is a figure showing cut surface view AA 'of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the following, the range necessary for the description for achieving the object of the present invention is schematically shown, and the range necessary for the description of the relevant part of the present invention will be mainly described. Are according to known techniques.

  FIG. 1 is a view for explaining one of the embodiments in which a high-pressure water suspension cleaning apparatus according to the present invention is installed in a cyclone apparatus 1. In particular, FIG. 1 is a view for explaining the refractory work of the refractory material of the double cylindrical structure portion 15 between the inner wall of the cyclone device 1 main body and the outer wall of the outer tube 8. That is, the high-pressure water suspension cleaning device shows the case where the high-pressure water suspension and the refractory material on the outer wall of the outer tube 8 and the refractory material on the inner wall of the cyclone device 1 main body are simultaneously suspended and washed.

  High-pressure water is supplied from the high-pressure water supply device to the high-pressure water swivel 3 fixedly installed above and outside the cyclone device 1 by the high-pressure hose 2. The high pressure water is guided into the connection of the split lance 12 and carried to the nozzle head unit 10. The split-type lance 12 connects the I-shape to form a split-type lance linear connection portion 14, and the U-shaped split-type lance 13 connects to change the direction to connect to the inside of a complicated structure, thereby connecting the nozzle head at the tip. High pressure water is led to part 10. Collectively, the high-pressure water is called a suspension cleaning device. Of course, it goes without saying that a straight pipe is constructed by connecting only I-shaped split lances, and the high-pressure water of the simple straight cylindrical pipe inner wall refractory material can be used for suspension washing.

Strongly fixed to the substantially center of the outer tube 8 to split the lance axis of the linearly concatenated part with a center riser 9 on the inner wall of the outer tube 8. External control box 7 are coaxially connected by a hydraulic hose 6 which leads to the hydraulic motor 5, the amount of water pressure water using a pin Niongiya 4, axial rotation of the pressure and split lance straight connecting portion 14, the axis of the nozzle head portion 10 Control operations such as rotation are performed from outside the cyclone device.

  The center riser 9 has a total of eight wheels on the inner wall of the outer tube 8 in the circumferential direction and four wheels in the vertical direction. The portion 14 can be rotated 360 degrees around the rotation axis. As a result, the nozzle head unit 10 for injecting high-pressure water can also move in the vertical direction and rotate in the horizontal direction along the inner wall of the cyclone device. In FIG. 3, the rotational movement of the nozzle head unit will be described using the AA ′ cutaway view of FIG. 1.

  A plurality of nozzles 11 for injecting high-pressure water can be installed in the nozzle head unit 10. FIG. 1 shows a state where two nozzles are installed. Each nozzle 11 has a high pressure toward the outer wall of the outer tube 8 and the inner wall refractory material of the cyclone device 1 in the double cylindrical structure portion 15 of the cyclone device 1. It is set to inject water.

  When the nozzle head unit 10 is installed horizontally as shown in FIG. 1 and high-pressure water is jetted horizontally from two nozzles, the high-pressure water jetted from the respective nozzles is the outer wall of the outer tube 8 and the cyclone device 1, respectively. It is injected at the same time on the inner wall. At this time, the greater the injection pressure of the high-pressure water, the greater the reflection pressure from the wall surface hit, that is, the reaction pressure. Due to this reflected pressure, a large force is applied to the nozzle 11 and the nozzle head portion 10, the connected divided lance shafts are shaken, the nozzle head portion is also displaced, and the high-pressure water can catch the wall surface at right angles from the nozzles. There is a problem of disappearing.

  Since the nozzle head unit 10 according to the present invention can rotate only the nozzle head unit using the connected split lance as a rotation axis, the wall surface reflection pressure of the high-pressure water is rotated in the rotation direction by rotating at a uniform speed. Therefore, it is possible to prevent shaking and displacement of the nozzle head portion 10 and shaking in the nozzle ejection direction. Moreover, the high-pressure water sprayed by the rotation of the nozzle head unit 10 attacks the number of rotations of the nozzle head unit several times uniformly while changing the angle from the vertical direction to the horizontal direction with respect to the wall surface. Therefore, the refractory material can be efficiently and completely washed so that there is no residue left in the inner corners of the honeycomb structure.

  In addition, the physical destructive force due to high-pressure water exerts the greatest destructive force when it hits the surface perpendicular to the suspension surface, but the refractory material that is the object to be suspended is firmly fixed in the honeycomb structure on the wall. Therefore, by rotating the nozzle head portion 10, it is effective to perform the spraying attack of the refractory material a plurality of times while changing the angle at which the high-pressure water hits, in order to perform the lifting work cleanly to every corner of the honeycomb structure. Thereby, the refractory material can be suspended and separated to every corner of the wall surface honeycomb structure.

  The injection positions and directions of the injection nozzles are not limited to the case of FIG. 1 provided at two positions 180 degrees diagonally about the rotation axis of the nozzle head part. For example, an equal angle of 120 degrees centering on the rotation axis of the nozzle head part It is also possible to arrange the nozzle injection positions / directions in a well-balanced manner such as three places on the same plane at the same distance or four places at a uniform angular interval of 90 degrees.

  As a result, if the high-pressure water injection pressures injected from the respective nozzles are equal, the reflected pressure, that is, the reaction force received from the wall surface hit by the high-pressure injection water becomes equal, so that the nozzle injection directions are diagonally set. As a result, the reflected pressures cancel each other, and the reflected pressures cancel or attenuate each other.

  One of the major causes of nozzle head position displacement and displacement or nozzle ejection direction blurring is due to the above-mentioned reflected pressure that is out of balance. It is possible to prevent misalignment or blurring in the nozzle injection direction. It is very important for the suspension work to prevent the nozzle position fluctuation and direction fluctuation and to inject the high-pressure water onto the required wall surface accurately and uniformly, which is an indispensable condition for efficient suspension washing. .

  FIG. 2 is a view for explaining an embodiment in which the cyclone of the present invention has a suspension cleaning device installed in the cyclone device 1, in which the nozzle head portion 10 rotates in the same vertical direction as the axial direction of the connected divided lances. (Represented by the longitudinal rotation of the nozzle 11).

  In this case, the high-pressure water sprayed from each nozzle 11 is sprayed to the outer wall of the outer tube 8, the inner wall of the cyclone device 1, and the top wall of the double cylindrical structure 15. The problem arises that the split lance shafts connected by the action are shaken, and the high-pressure water cannot catch the wall surface at a right angle.

  Similarly to the above, by rotating only the nozzle head unit 10 in the same vertical direction as the connected split lance shaft, the wall surface reflected pressure of the high-pressure water is released in the rotational direction, and the nozzle head unit 10 is shaken, misaligned, It is possible to prevent shaking in the nozzle injection direction. Similarly, since the high-pressure water sprayed by the rotation of the nozzle head unit 10 attacks the wall surface several times while changing the angle from the vertical direction to the horizontal direction, the double cylindrical structure The top wall of the portion 15 can also be efficiently and completely washed with the refractory material so that the inner corners of the honeycomb structure are not left behind.

  Next, the lower part of FIG. 2 represents a state in which the split lances are connected when high pressure water is suspended and washed on the inner wall (referred to as a conical part 16) whose inner diameter changes in a mortar shape in the lower part of the cyclone device. Yes. A nozzle head portion (the illustration of the nozzle head portion at the branched tip is omitted in FIG. 2) at the tip of the split lance 17 branched in two directions from the split lance linear connecting portion 14 that is the central axis. When mounted, the nozzle head portion can be rotated vertically or horizontally in the same manner as described above, whereby the refractory material on the inner wall of the conical portion 16 is suspended and washed uniformly and efficiently by high-pressure water jet.

  Similarly, the inner wall of the conical portion 16 is horizontally washed by rotating about the split lance linear connecting portion 14 of the central shaft, and the bottom of the conical portion can be washed by moving the shaft downward. Of course, when the inner diameter of the conical portion 16 becomes smaller and the nozzle head portion rotation is hindered, the branched split lance 17 needs to be shortened, and the branched split lance 17 is the wall surface of the conical portion 16. It is desirable to branch at an angle that is perpendicular to.

  In the lower part of FIG. 2, a split lance 17 branched in two directions from the split lance straight connecting portion 14 which is the central axis is represented, but this is split in three directions at the same angular interval of 120 degrees. Or four-way branches at 90 ° intervals. Rather, the four-way branching makes it easier to cancel the wall reflection pressures caused by the high-pressure water jets, and it is effective to prevent the runout of the split lance straight line connecting portion 14 that is the central axis.

  Accordingly, in order to prevent the center axis from being shaken, there is no need for a complicated operation of moving the center riser 9 to the lower inside of the cyclone device which is the conical portion 16 and fixing the split lance linear connecting portion 14. . In the technique of Patent Document 3, it can be seen that the center riser is necessary in the vicinity of the nozzle head portion and needs to move together with the nozzle head portion for the purpose of fixing the position of the high-pressure water jet nozzle and preventing the position blur.

  A suspension device that can efficiently and safely lining refractory material on the inner wall surface of a vertical cylindrical structure with a complicated shape such as a mortar shape or a double cylinder structure like a cyclone device, and can wash the wall surface simultaneously Development of this is what has been desired in the past. The high-pressure water suspension cleaning apparatus according to the present invention has a wide range of applications in the industry because of its wide application to objects other than the cyclone apparatus, and its applicability is very high.

DESCRIPTION OF SYMBOLS 1 Cyclone apparatus 2 High pressure hose 3 Swivel for high pressure water 4 Pinion gear 5 Hydraulic motor 6 Hydraulic hose 7 Control box 8 Outer tube 9 Center riser 10 Nozzle head part 11 Nozzle 12 Split type lance 13 U-shaped split type lance 14 Split type lance straight line connection Part 15 Double cylindrical structure part 16 Conical part 17 Branched split lance

Claims (4)

A cyclone type suspension device for attaching a refractory material or lining fixed to a wall to protect an object exposed to high temperatures,
A split lance for supplying high-pressure water through an outer tube, the split lance having a U-shaped or L-shaped changing portion connected to an I-shaped linear portion ;
A nozzle head having a plurality of high-pressure water jet nozzles mounted on-edge of the split lance,
A high-pressure water supply unit for supplying high-pressure water to the nozzle head unit ;
A center riser provided with casters at the tips of a plurality of shaft members that are radially extended in a circumferential direction and a vertical direction from a straight portion of the split lance toward the inner wall of the outer tube. Cyclone type suspension device characterized by. The linear connection portion of the split lance rotates about a shaft, and the nozzle head portion installed at the tip of the split lance connection also rotates in a substantially horizontal or substantially vertical direction. Cyclone type suspension device. The injection positions of the plurality of high-pressure water injection nozzles are arranged on the same plane circumference at substantially the same distance from the rotation center axis of the nozzle head portion, and the positions thereof are diagonal to the rotation center axis or substantially 360. The cyclone suspension device according to claim 2, wherein the cyclone type suspension device is arranged with an equal division angle of degrees and arranged so that the respective injection directions are injected in opposite directions from the central axis. Roh Zuruheddo portion having a plurality of high-pressure water jet nozzle,
The injection positions of each of the plurality of high-pressure water injection nozzles are arranged on substantially the same plane circumference at substantially the same distance from the center position, and are arranged diagonally from the center position or at an equal division angle of approximately 360 degrees. The cyclone type suspension device according to claim 2, wherein each of the high pressure water injection nozzles is arranged so that the injection direction is jetted in the opposite direction from the center position.

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