JP5036255B2 - Coal feed pipe deposit removal tool - Google Patents

Description

  The present invention relates to a coal feed pipe deposit removing tool for removing deposits on the inner wall of a coal feed pipe to which coal from a coal feeder of a coal feed facility is supplied.

  In boilers that use coal as fuel, coal is supplied from a bunker that stores the coal to the coal feeder, falls through a coal feed pipe that communicates with the coal feeder, and is transported to a coal crusher such as a mill. It is crushed and transported to the boiler. However, when coal is transported in a state containing moisture, the coal may be deposited on the inner wall without falling in the coal supply pipe. If coal accumulates in the coal supply pipe, the coal cannot be sufficiently supplied to the mill. Therefore, it is necessary to periodically remove the coal adhering to the coal supply pipe.

  For this reason, conventionally, the coal was removed from the coal supply pipe by inserting a metal rod into the coal supply pipe and scraping the coal. A long metal rod is used so that the tip of the metal rod reaches the deep part of the coal supply pipe, but it is not easy to remove the target deposit with the long metal rod, and the operation is difficult.

  Also, by inserting a scraper pipe with a hole in the pipe wall into the coal supply pipe and providing means for supplying hot gas, the coal supply pipe that dries the coal and prevents the coal from adhering to the coal supply pipe An obstruction prevention device (see Patent Document 1), a rotating cleaning device for a coal supply pipe in which a cleaning member is rotatably disposed on the coal supply pipe (see Patent Document 2), a coal fall state detecting means, and a coal fall There has been proposed a coal feeder (see Patent Document 3) provided with an air jetting means for jetting air from below when there is no air. However, both of these techniques require a large-scale apparatus, which is not only costly but also difficult to apply to all types of coal supply pipes. In addition, there is a problem that the coal feeder cannot be operated while the deposits on the coal feeding pipe are being removed.

JP 05-317743 A (Claims etc.) Japanese Utility Model Publication No. 05-39650 (Claims) JP 2001-278422 A (Claims etc.)

  In view of such circumstances, it is an object of the present invention to provide a coal feeding pipe deposit removing tool that is easy to operate and handle and can remove deposits on a coal feeding pipe even during operation of a coal feeder. To do.

  The 1st mode of the present invention which solves the above-mentioned subject is a coal supply pipe adhesion removal tool which removes the adhesion to the inner wall of a coal supply pipe supplied with coal from a coal feeder of coal supply equipment, A tubular member that can be inserted from an insertion port that communicates with the coal supply pipe and that has a spout for ejecting gas at a distal end portion thereof, and a cylindrical shape that is provided on the proximal end side of the tubular member and closes the insertion port And an obstructing member.

  In the first aspect, by ejecting gas from the outlet of the tubular member, the deposits on the inner wall of the coal supply pipe can be easily removed, and the cylindrical closing member is inserted into the insertion port above the coal supply pipe. Since the gas leakage does not occur even while the tool for removing deposits on the coal feeding pipe is inserted into the coal feeding pipe, the deposits on the coal feeding pipe can be removed while operating the coal feeder.

  According to a second aspect of the present invention, there is provided the coal feed pipe deposit removing tool according to the first aspect, wherein a hose-like member is provided at a base end portion of the tubular member. In the tool.

  In the second aspect, since the base end portion of the tubular member is provided with a hose-like member, the hose-like member can be connected to, for example, a compressed air supply facility in a factory, and deposits on the coal supply pipe are removed by the compressed air. Can be cost-effective.

  According to a third aspect of the present invention, in the coal supply pipe adhering material removing tool according to the first or second aspect, a protruding portion that protrudes from the jet port toward the tip side is provided at the tip portion of the tubular member. It is in the coal feeding pipe deposit removal tool characterized by this.

  In the third aspect, by providing the protrusion at the tip of the tubular member, even if there is an adhering matter that cannot be removed by the gas ejected from the tubular member, it can be bumped and removed by the protrusion. .

  According to a fourth aspect of the present invention, in the coal pipe adhering matter removing tool according to any one of the first to third aspects, the cylindrical closing member is made of a material that can visually see the inside thereof. It is in the charcoal pipe deposit removal tool.

  In the fourth aspect, the cylindrical closing member is made of a material that can visually see the inside thereof, so that the operation can be performed while confirming the state of the coal supply pipe. For this reason, the deposits can be removed more reliably.

  According to a fifth aspect of the present invention, in the coal supply pipe adhering matter removing device according to any one of the first to fourth aspects, the tubular member includes a grip portion on the base end side from the cylindrical closing member. It is in the coal feed pipe deposit removal tool characterized by doing.

  In this 5th aspect, when a tubular member equips the base end part side with respect to a cylindrical obstruction | occlusion member, it becomes easy for an operator to grasp a coal feeding pipe deposit removal tool, and workability | operativity improves.

  ADVANTAGE OF THE INVENTION According to this invention, operation and handling are easy, and the coal supply pipe | tube adhering material removal tool which can remove the deposit | attachment of a coal supply pipe | tube can be provided even during operation of a coal feeder.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In addition, description of embodiment shown below is an illustration and the structure of this invention is not limited to this.

  In FIG. 1, an example of the coal feeding pipe deposit removal tool concerning this invention is shown.

  As shown in FIG. 1, the tubular member 11 of the coal supply pipe deposit removing tool 10 according to the present invention is formed of a long and hollow metal tube, and the opening at the tip serves as a spout 11 a for ejecting gas. The ejection port 11a can eject gas from the distal end of the tubular member 11 toward the outside in the longitudinal direction. In addition, in this embodiment, although the jet nozzle 11a was provided in the front-end | tip of the tubular member 11, the jet outlet 11a should just be provided in the front-end | tip part of the tubular member 11, ie, the front-end | tip vicinity, for example, opens to the side surface near a front-end | tip. It may be provided as follows. Further, a plurality of jet outlets 11a may be provided as long as the gas jet power can be maintained to such an extent that deposits on the coal feeding pipe can be removed.

  A protruding portion 12 made of a rod-like member is fixed to the side surface of the distal end portion of the tubular member 11 so as to protrude from the ejection port 11a toward the distal end side. The protrusions 12 are provided so that the deposits can be removed by abutment when the deposits on the coal supply pipe cannot be sufficiently removed only by gas ejection. When the deposit on the coal supply pipe directly bumps with the tubular member 11, the jet outlet 11 a may be clogged with the deposit, but such a problem does not occur by providing the protruding portion 12. The protruding portion 12 of the present embodiment is configured by sticking a rod-shaped member, that is, another member, to the side surface of the tubular member 11, but a part of the distal end of the tubular member 11 may be protruded to be a protruding portion. In addition, it is preferable that the rod-shaped member which comprises the protrusion part 12 consists of metals. This is because a hard material is preferable in order to remove deposits that cannot be removed by gas ejection.

  A tubular closing member 13 is provided on the proximal end side of the tubular member 11. The cylindrical closing member 13 is cylindrical and has an end surface closed on one side, and has an opening on the end surface. When the tubular member 11 passes through the opening, the end surface is closed. The inner diameter of the cylinder of the cylindrical closing member 13 is large enough to cover an insertion port described later.

  Here, the tubular member 11 and the cylindrical closing member 13 will be further described with reference to FIG.

  As shown in FIG. 2, the tubular member 11 passes through the opening 13b of the end surface 13a of the cylindrical closing member 13, and there is no gas leakage between the tubular member 11 and the inner peripheral surface of the opening 13b. It is sealed by a seal member 14 made of an O-ring or the like. The tubular member 11 can be tilted in all directions with respect to the end surface 13a of the cylindrical closing member 13 by press-fitting and supporting the tubular member 11 on the cylindrical closing member 13 provided with the seal member 14, and supplying coal The spout 11a can be directed to the tube deposit. In addition, the tubular closing member 13 can slide the tubular member 11, and the tubular closing member 13 can be freely moved in accordance with the length from the insertion port to the coal supply pipe.

  A hose-like member 16 is coupled to the proximal end portion of the tubular member 11 via a connecting member 15. A connection port 16a is provided at the base end of the hose-like member 16 so that it can be connected to, for example, a compressed air supply facility in a factory. Moreover, the connection member 15 is provided in order to connect the tubular member 11 and the hose-like member 16, and has the valve | bulb 15a in the center. The gas flow path is opened and closed by operating the valve 15a. By opening the valve 15a, gas is fed from the hose-like member 16 to the tubular member 11, and by closing the valve 15a, gas feeding to the tubular member 11 is blocked.

  Further, the tubular member 11 is provided with a gripping portion 17 on the proximal end side with respect to the cylindrical closing member 13. The operator can easily perform the operation by holding the holding portion 17 and performing the operation.

  The tubular member 11 is preferably made of a heat resistant material. This is because heat from a boiler or the like may reach the coal supply pipe. Moreover, it is preferable that it is made of a relatively light material having a certain degree of hardness. This is because it becomes easier for the operator to operate. Examples of materials that satisfy the above-described conditions include iron, aluminum, and stainless steel.

  The cylindrical closing member 13 may be any member that can close the insertion port of the coal supply pipe deposit removing tool 10 and prevent gas leakage, and is preferably made of a material that can visually see the inside. . This is because the work can be performed while checking the state of the coal supply pipe.

  The hose-like member 16 may be long enough to be connected to, for example, a compressed air supply facility in a factory. Moreover, a material is not specifically limited, For example, urethane is mentioned.

  The gripping part 17 is not particularly limited as long as it has a shape and material that can be easily grasped by the operator.

  In addition, the tubular member 11 may include an adjustment unit that can adjust the distance between the distal end portion and the cylindrical closing member 13 on the distal end side from the cylindrical closing member 13. When the adjusting portion is provided, when used, for example, another tubular member is appropriately inserted in accordance with the length from the insertion port for inserting the coal feeding pipe deposit removing tool 10 to the coal feeding pipe.

  Moreover, although the coal supply pipe | tube deposit | attachment removal tool 10 connected the tubular member 11 and the cylindrical obstruction | occlusion member 13 with the sealing member 14, without providing the sealing member 14, for example, the tubular member 11 and the tubular obstruction | occlusion member 13 are connected. You may connect by welding etc.

  Although the protruding portion 12 is provided in the present embodiment, the protruding portion is not necessarily provided. Further, the valve 15a and the grip portion 17 are not necessarily provided.

  Here, the usage method of the coal feeding pipe deposit removal tool 10 is demonstrated using FIG.

  FIG. 3 is an explanatory view of a method of using the coal feed pipe deposit removing tool according to the present invention. FIG. 3 shows a part of the coal supply facility.

  First, the coal supply facility according to the present embodiment will be briefly described. A bunker 20 for storing coal is connected to the upper part of the coal feeder 21, and a coal supply pipe 23 connected to a coal crusher such as a mill (not shown) is connected to the lower part. In addition, a belt conveyor 22 for conveying coal is provided inside the coal feeder 21. And in the upper part of the coal feeder 21, there is an opening protruding outward for observing the inside of the coal supply facility. In this embodiment, since the coal feed pipe adhering material removal tool is inserted from this opening, it is referred to as an insertion port 24 hereinafter.

  Coal stored in the bunker 20 is supplied to the coal feeder 21, and is carried to the upper side of the coal feeder pipe 23 by the belt conveyor 22 in the coal feeder 21. The coal transported above the coal supply pipe 23 falls through the coal supply pipe 23, is transported to a coal crusher such as a mill (not shown), is pulverized, and is transported to the boiler.

  The coal feed pipe deposit removing tool of the present invention can remove deposits on the coal feed pipe of such a coal feed facility, for example.

  First, the coal feed pipe deposit removing tool 10 is inserted from the insertion port 24 so that the jet port 11 a reaches the coal feed pipe 23. Then, the cylindrical closing member 13 is slid so as to completely cover the protruding insertion port 24.

  Next, the connection port 16a of the hose-like member 16 is connected to an air discharge pipe (not shown), for example, a compressed air supply facility in a factory. Here, the connection port 16a may be connected to one that supplies compressed air, and may be directly connected to, for example, a compressor or a gas cylinder.

  Next, by opening the valve 15 a of the connecting member 15, the air discharged from the compressed air supply facility in the factory (not shown) is ejected from the ejection port 11 a through the hose-like member 16 and the tubular member 11. In this way, coal adhering to the inner wall of the coal supply pipe 23 is removed by ejecting air from the ejection port 11a. Note that the air ejection may be performed continuously or intermittently, and the valve 15a is opened and closed as appropriate to start or stop the air ejection.

  Then, the inner wall of the coal supply pipe 23 is observed from the cylindrical closing member 13, and when there is coal or the like that could not be completely removed by the ejection of air, the adhering matter is removed by bumping at the tip of the protruding portion 12. To do.

  According to the present invention, the worker can remove the deposits on the coal feeding pipe relatively easily without performing an operation such as a bump with a metal rod. Moreover, since the insertion port of the coal feed pipe deposit removing tool is closed by the cylindrical closing member, there is no gas leak while the coal feed pipe deposit removing tool is being inserted into the coal feed pipe. The deposits on the coal supply pipe can be removed while operating the machine. That is, the deposits on the coal feeding pipe can be removed without stopping the coal feeder.

  In this embodiment, the coal feeding pipe deposit removing tool 10 includes the hose-like member 16 so that the deposits on the coal feeding pipe can be removed by compressed air supplied from a compressed air supply facility or the like in the factory. Because it can, it does not cost.

  In this embodiment, the coal supply pipe deposit removing tool 10 is connected to the base end portion of the tubular member 11 with the hose-like member 16 and supplied using compressed air supplied from the compressed air supply facility in the factory. Although the deposit removal of the charcoal pipe was performed, the gas ejection method of the coal feed pipe deposit removing tool is not limited to this.

  Moreover, the gas ejected from the tubular member 11 is not limited to air, For example, nitrogen etc. may be sufficient.

  The coal feed pipe deposit removing tool of the present invention is not limited to the coal feed pipe of the coal feed facility of the form shown in FIG. 3, and is spatially communicated with the coal feed pipe and the coal feed pipe deposit removing tool is inserted. Any coal supply pipe of a coal supply facility having an opening that can be used can be used.

It is a figure which shows an example of the coal feeding pipe deposit removal tool concerning this invention. It is a figure which shows the tubular member and cylindrical obstruction | occlusion member concerning this invention. It is explanatory drawing of the usage method of the coal feed pipe deposit removal tool concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Coal supply pipe cleaning instrument, 11 Tubular member, 11a jet, 12 Protrusion part, 13 Cylindrical obstruction | occlusion member, 14 Seal member, 15 Connection member, 15a Valve, 16 Hose-like member, 16a Connecting port, 17 Grasping part, 20 Bunker, 21 Coal feeder, 22 Belt conveyor, 23 Coal feed pipe, 24 Insertion slot

Claims (5)

A tool for removing deposits on a coal supply pipe that removes deposits on the inner wall of a coal supply pipe to which coal from a coal feeder of a coal supply facility is supplied,
It can be inserted from an insertion port communicating with the coal supply pipe,
A tubular member having a jet outlet for ejecting gas at the tip,
A cylindrical closing member that is provided on the proximal end side of the tubular member and closes the insertion port;
A tool for removing adhering matter from a coal feeding pipe, comprising: The coal feeding pipe deposit removing tool according to claim 1, wherein a hose-like member is provided at a base end portion of the tubular member. The charcoal pipe deposit removal tool according to claim 1 or 2, wherein a protruding portion that protrudes from the jet port toward the tip side is provided at a tip portion of the tubular member. Removal tool. The coal feed pipe adhering material removal tool according to any one of claims 1 to 3, wherein the cylindrical closing member is made of a material that can visually see the inside thereof. . The coal feeding pipe deposit removing tool according to any one of claims 1 to 4, wherein the tubular member includes a grip portion on the base end side from the cylindrical closing member. Kimono removal tool.

Images