JP3225696U - Measurement jig - Google Patents

Abstract

An object of the present invention is to provide a measuring jig which can easily measure a burner's start-up and has high reproducibility. A measuring jig includes a contact surface for making contact with a protruding portion of a cooling tube located inside a furnace wall among cooling tubes included in a burner, and a jig axis orthogonal to the contact surface. A plate-like member 210 having a plurality of slits 213 penetrating in the CJ direction, and supporting the plate-like member 210 with respect to the burner 126 such that the contact surface 212 is orthogonal to the burner axis CB direction of the burner 126. And a support member 230. [Selection diagram] FIG.

Description

  The present disclosure relates to a measurement jig.

  Conventionally, as gasification furnace equipment, carbon-containing solid fuel such as coal is supplied into the gasification furnace, and the carbon-containing solid fuel is partially burned and gasified to produce a flammable gas. An apparatus (coal gasification facility) is known.

  As a burner for burning a carbon-containing solid fuel in a gasifier, there is, for example, a multi-tube burner having a fuel pipe, a cooling pipe, and an air pipe and allowing thermal expansion in an axial direction. In this multi-pipe burner, the positional relationship (extension) in the direction of the axis from the tip of the fuel pipe to the tip of the cooling pipe or the tip of the air pipe depends on the cooling performance of the fuel pipe or air pipe, It has a significant effect on combustion performance and life. For this reason, the rise of each pipe is adjusted periodically, but a simple and highly reproducible measurement accuracy is required so that the rise and fall of the pipe can be easily measured and managed.

  As an apparatus for measuring an extra allowance, there is an apparatus disclosed in Patent Document 1, for example. The margin measuring device described in Patent Literature 1 measures a margin by inserting a straight pipe from outside the furnace.

JP-A-5-187608

  The cooling pipe of the multi-pipe burner is formed, for example, so as to surround the outer peripheral surface of the air pipe, and the position from the tip of the fuel pipe to the tip of the air pipe protruding into the furnace is set in the furnace by the multi-pipe burner. Since it is one of the important factors that affect the combustion state of steel, it is necessary to control it accurately. Also, in order to protect the vicinity of the tip of the air pipe projecting into the furnace from the combustion heat due to the flame formed in the furnace, the cooling pipe formed on the outer peripheral surface of the air pipe is provided with a multi-pipe burner fuel pipe. It is necessary to minimize the effects of wear caused by pulverized coal that erupts from the furnace. Furthermore, since the cooling pipe formed spirally on the outer peripheral surface near the tip of the air pipe changes its axial position in the circumferential direction, the allowance in the circumferential direction becomes an appropriate positional relationship. It is necessary to confirm that

  Since the margin measuring device described in Patent Document 1 measures the margin from outside the furnace, it may be difficult to confirm whether the margin changing in the circumferential direction is in an appropriate positional relationship. .

  As another measuring method, a measuring jig having an L-shaped angle attached to a center rod is inserted into a fuel pipe, one side of the L-shaped angle is brought into contact with the surface of the cooling pipe, and a reference position is set. There is a method of directly measuring the distance from the reference position to the tip of the fuel pipe or the tip of the air pipe at a plurality of locations in the circumferential direction using a measuring instrument. At the time of the extra measurement, the operation of marking a plurality of measurement positions at equal intervals in the circumferential direction with respect to the reference position set on the cooling pipe and rotating the measurement jig to the measurement position is repeated.

  However, in this method, the state where one side of the L-shaped angle is brought into contact with the surface of the cooling pipe may change every time measurement is performed, and the measurement position may be shifted, which may make it difficult to ensure reproducibility. Further, since the cooling pipe is formed in a coil shape and the margin in the axial direction changes in the circumferential direction, an error may occur in the measurement by the operator. In addition, since the work of marking the measurement position itself takes time, there remains a problem in terms of efficient measurement.

  The present disclosure has been made in view of such circumstances, and it is an object of the present disclosure to provide a measurement jig that can easily measure a burner's start-up, and that can perform measurement with high reproducibility. I do.

In order to solve the above-described problems, the measurement jig of the present disclosure employs the following solutions.
That is, the measurement jig according to an aspect of the present disclosure is a measurement jig that is brought into contact with a cooling pipe formed so as to surround an outer peripheral surface of an air pipe included in a burner, and is the most inside of the furnace wall among the cooling pipes. And a plurality of slits penetrating in the axial direction of the jig perpendicular to the contact surface, and the contact surface is provided with the burner. And a support member for supporting the plate-like member with respect to the burner so as to be orthogonal to the burner axis direction.

  According to the measuring jig according to the present disclosure, it is possible to easily measure the change of the burner, and it is possible to perform the measurement with high reproducibility.

It is a schematic structure figure of an integrated coal gasification combined cycle facility. It is a schematic block diagram of the gasification furnace equipment shown in FIG. FIG. 3 is a longitudinal sectional view in which a portion A shown in FIG. 2 is partially enlarged. 1 is an exploded perspective view of a measurement jig according to an embodiment of the present disclosure. 1 is a side view of a measurement jig according to an embodiment of the present disclosure. It is the figure which looked at the plate-shaped member from the B direction shown in FIG. It is the figure which looked at the guide plate from the B direction shown in FIG. It is a figure showing a modification of a guide board. It is a longitudinal cross-sectional view of the bar in which the measuring jig was installed.

[Coal Gasification Combined Cycle Power Plant]
First, an integrated coal gasification combined cycle power plant equipped with a suitable burner 126 and a burner 127 using the measuring jig 200 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2.
FIG. 1 is a schematic configuration diagram of an integrated coal gasification combined cycle facility to which a gasifier facility according to an embodiment of the present disclosure is applied.

  An integrated coal gasification combined cycle (IGCC) 10 to which the gasification furnace equipment 14 according to the present embodiment is applied uses air as an oxidant, and the gasification furnace equipment 14 uses fuel as an oxidant. An air combustion system that generates combustible gas (product gas) is adopted. Then, the integrated coal gasification combined cycle facility 10 purifies the generated gas generated in the gasification furnace facility 14 by the gas purification facility 16 to obtain a fuel gas, and then supplies the fuel gas to the gas turbine 17 to generate power. That is, the integrated coal gasification combined cycle power plant 10 of the first embodiment is a power plant of an air combustion system (air blowing). As the fuel to be supplied to the gasification furnace equipment 14, for example, a carbon-containing solid fuel such as coal is used. In the following description, “upper” or “upper” indicates the upper side in the vertical direction, and “lower” or “lower” indicates the lower side in the vertical direction. The vertical direction is not strict but includes an error.

  As shown in FIG. 1, a coal gasification combined cycle power plant (combined gasification combined cycle facility) 10 includes a coal supply facility 11, a gasification furnace facility 14, a char recovery facility 15, a gas purification facility 16, a gas turbine 17, a steam turbine 18, a generator 19, and a heat recovery steam generator (HRSG) 20.

  The coal supply equipment 11 is supplied with coal as a carbon-containing solid fuel as raw coal, and pulverizes the coal with a coal mill (not shown) or the like to produce pulverized coal pulverized into fine particles. The pulverized coal produced by the coal supply facility 11 is pressurized at the outlet of the coal supply line 11a by nitrogen gas as an inert gas for conveyance supplied from an air separation facility (ASU) 42, which will be described later, to the gasifier facility 14. Supplied to. The inert gas is an inert gas having an oxygen content of about 5% by volume or less. Typical examples thereof include nitrogen gas, carbon dioxide gas, and argon gas, but are not necessarily limited to about 5% or less.

  The gasification furnace equipment 14 is supplied with pulverized coal produced in the coal supply equipment 11, and the char (unreacted portion and ash content) recovered in the char recovery equipment 15 is returned and supplied in a reusable manner. Have been.

  Further, a compressed air supply line 41 from the gas turbine 17 (compressor 61) is connected to the gasification furnace equipment 14, and a part of the compressed air compressed by the gas turbine 17 is compressed by the booster 68 to a predetermined pressure. , And can be supplied to the gasification furnace equipment 14. The air separation equipment 42 separates and generates nitrogen and oxygen from air in the atmosphere, and the air separation equipment 42 and the gasification furnace equipment 14 are connected by a first nitrogen supply line 43. The first nitrogen supply line 43 is connected to a coal supply line 11a from the coal supply facility 11. Further, a second nitrogen supply line 45 branched from the first nitrogen supply line 43 is also connected to the gasification furnace equipment 14, and a char return line 46 from the char recovery equipment 15 is connected to the second nitrogen supply line 45. It is connected. Further, the air separation equipment 42 is connected to the compressed air supply line 41 by an oxygen supply line 47. The nitrogen separated by the air separation equipment 42 flows through the first nitrogen supply line 43 and the second nitrogen supply line 45, and is used as a carrier gas for coal or char. The oxygen separated by the air separation facility 42 flows through the oxygen supply line 47 and the compressed air supply line 41 to be used as an oxidant in the gasification furnace facility 14.

  The gasification furnace equipment 14 includes, for example, a two-stage spouted bed type gasification furnace 101 (see FIG. 2). The gasification furnace equipment 14 gasifies by partially burning coal (pulverized coal) and char supplied therein with an oxidizing agent (air, oxygen) to produce gas. The gasification furnace equipment 14 is provided with a foreign matter removal equipment 48 for removing foreign matter (slag) mixed in the pulverized coal. The gasification furnace equipment 14 is connected to a production gas line 49 for supplying a production gas to the char recovery equipment 15 so that the production gas including the char can be discharged. In this case, as shown in FIG. 2, by providing a syngas cooler 102 (gas cooler) in the generated gas line 49, the generated gas may be cooled to a predetermined temperature and then supplied to the char recovery facility 15.

  The char collection facility 15 includes a dust collection facility 51 and a supply hopper 52. In this case, the dust collection equipment 51 is configured by one or more cyclones or porous filters, and can separate the char contained in the generated gas generated by the gasification furnace equipment 14. Then, the generated gas from which the char has been separated is sent to the gas purification facility 16 through the gas discharge line 53. The supply hopper 52 stores the char separated from the generated gas in the dust collecting facility 51. A bin may be arranged between the dust collecting facility 51 and the supply hopper 52, and a plurality of supply hoppers 52 may be connected to the bin. The char return line 46 from the supply hopper 52 is connected to the second nitrogen supply line 45.

The gas purification equipment 16 performs gas purification by removing impurities such as sulfur compounds and nitrogen compounds from the product gas from which the char has been separated by the char recovery equipment 15. Then, the gas purification equipment 16 purifies the produced gas to produce a fuel gas, and supplies the gas to the gas turbine 17. Since the product gas from which the char has been separated still contains sulfur (H ₂ S, etc.), the gas purification equipment 16 removes and recovers the sulfur using an amine absorbing solution or the like, thereby effectively utilizing the sulfur. I do.

  The gas turbine 17 includes a compressor 61, a combustor 62, and a turbine 63. The compressor 61 and the turbine 63 are connected by a rotating shaft 64. The combustor 62 is connected to a compressed air supply line 65 from the compressor 61, a fuel gas supply line 66 from the gas purification facility 16, and a combustion gas supply line 67 extending toward the turbine 63. Is connected. Further, the gas turbine 17 is provided with a compressed air supply line 41 extending from the compressor 61 to the gasification furnace equipment 14, and a booster 68 is provided in the middle. Therefore, the combustor 62 generates a combustion gas by mixing and burning a part of the compressed air supplied from the compressor 61 and at least a part of the fuel gas supplied from the gas purification facility 16, and The generated combustion gas is supplied to the turbine 63. Then, the turbine 63 drives the generator 19 to rotate by rotating the rotating shaft 64 with the supplied combustion gas.

  The steam turbine 18 includes a turbine 69 connected to a rotation shaft 64 of the gas turbine 17, and the generator 19 is connected to a base end of the rotation shaft 64. The exhaust heat recovery boiler 20 is connected to an exhaust gas line 70 from the gas turbine 17 (turbine 63), and generates steam by performing heat exchange between feed water and exhaust gas of the turbine 63. The exhaust heat recovery boiler 20 is provided with a steam supply line 71 and a steam recovery line 72 between the turbine 69 of the steam turbine 18 and a condenser 73 in the steam recovery line 72. Further, the steam generated by the exhaust heat recovery boiler 20 may include steam generated by performing heat exchange with the generated gas in the syngas cooler 102 of the gasification furnace 101. Therefore, in the steam turbine 18, the turbine 69 is rotationally driven by the steam supplied from the exhaust heat recovery boiler 20, and the generator 19 is rotationally driven by rotating the rotating shaft 64.

  Further, a gas purification facility 74 is provided from the outlet of the exhaust heat recovery boiler 20 to the chimney 75.

  Here, the operation of the integrated coal gasification combined cycle power plant 10 of the present embodiment will be described.

  In the integrated coal gasification combined cycle power plant 10 of the present embodiment, when raw coal (coal) is supplied to the coal supply facility 11, the coal is pulverized into fine particles in the coal supply facility 11 to be pulverized coal. . The pulverized coal produced in the coal supply facility 11 is supplied to the gasification furnace facility 14 through the first nitrogen supply line 43 by the nitrogen supplied from the air separation facility 42. In addition, the char recovered by the char recovery facility 15 described later is supplied to the gasification furnace facility 14 by flowing through the second nitrogen supply line 45 with nitrogen supplied from the air separation facility 42. Further, after the compressed air extracted from the gas turbine 17 to be described later is pressurized by the booster 68, the compressed air is supplied to the gasification furnace facility 14 through the compressed air supply line 41 together with the oxygen supplied from the air separation facility 42.

  In the gasification furnace equipment 14, the supplied pulverized coal and char are burned by compressed air (oxygen), and the pulverized coal and char are gasified to generate a product gas. Then, the generated gas is discharged from the gasification furnace equipment 14 through the generated gas line 49 and sent to the char recovery equipment 15.

  In the char recovery facility 15, the generated gas is first supplied to the dust collection facility 51, whereby fine char contained in the generated gas is separated. Then, the generated gas from which the char has been separated is sent to the gas purification facility 16 through the gas discharge line 53. On the other hand, fine char separated from the product gas is deposited on the supply hopper 52, returned to the gasification furnace facility 14 through the char return line 46, and recycled.

  The product gas from which the char has been separated by the char recovery facility 15 is subjected to gas purification in a gas purification facility 16 by removing impurities such as sulfur compounds and nitrogen compounds, thereby producing a fuel gas. A compressor 61 generates compressed air and supplies it to a combustor 62. The combustor 62 mixes the compressed air supplied from the compressor 61 and the fuel gas supplied from the gas purification facility 16 and generates combustion gas by burning. By rotating the turbine 63 with the combustion gas, the compressor 61 and the generator 19 are rotationally driven via the rotary shaft 64. Thus, the gas turbine 17 can generate electric power.

Then, the exhaust heat recovery boiler 20 generates steam by performing heat exchange between the exhaust gas discharged from the turbine 63 in the gas turbine 17 and the feedwater, and supplies the generated steam to the steam turbine 18. In the steam turbine 18, by rotating the turbine 69 with the steam supplied from the exhaust heat recovery boiler 20, the generator 19 can be rotationally driven via the rotating shaft 64 to generate power.
The gas turbine 17 and the steam turbine 18 do not have to rotate one generator 19 on the same shaft, and may rotate a plurality of generators on another shaft.

  Thereafter, in the gas purification equipment 74, harmful substances of the exhaust gas discharged from the exhaust heat recovery boiler 20 are removed, and the purified exhaust gas is released from the chimney 75 to the atmosphere.

  Next, with reference to FIG. 1 and FIG. 2, the gasification furnace equipment 14 in the above-mentioned integrated coal gasification combined cycle power generation equipment 10 will be described in detail. FIG. 2 is a schematic configuration diagram showing the gasification furnace equipment of FIG.

  The gasification furnace equipment 14 includes a gasification furnace 101 and a syngas cooler 102, as shown in FIG.

  The gasification furnace 101 is formed to extend in the vertical direction, and pulverized coal and oxygen are supplied to the lower side in the vertical direction, and the product gas partially burned and gasified flows upward from the lower side in the vertical direction. It is distributed. The gasification furnace 101 has a pressure vessel 110 and a gasification furnace wall (furnace wall) 111 provided inside the pressure vessel 110. The gasification furnace 101 forms an annulus 115 in a space between the pressure vessel 110 and the gasification furnace wall 111. Further, in the space inside the gasification furnace wall 111, the gasification furnace 101 includes, in order from the lower side in the vertical direction (that is, the upstream side in the flow direction of the generated gas), the combustor section 116, the diffuser section 117, and the reducer section 118. Is formed.

  The pressure vessel 110 is formed in a cylindrical shape having a hollow space inside, and has a gas discharge port 121 formed at an upper end, and a slag hopper 122 formed at a lower end (bottom). The gasification furnace wall 111 is formed in a cylindrical shape having a hollow space inside, and the wall surface is provided to face the inner surface of the pressure vessel 110. In this embodiment, the pressure vessel 110 has a cylindrical shape, and the diffuser portion 117 of the gasification furnace wall 111 is also formed in a cylindrical shape. The gasification furnace wall 111 is connected to the inner surface of the pressure vessel 110 by a support member (not shown).

  The gasification furnace wall 111 separates the inside of the pressure vessel 110 into an internal space 154 and an external space 156. As will be described later, the gasification furnace wall 111 has such a shape that the cross-sectional shape changes at the diffuser 117 between the combustor 116 and the reducer 118. The gasification furnace wall 111 has a vertically upper side upper end connected to the gas discharge port 121 of the pressure vessel 110, and a vertically lower side lower end provided with a gap from the bottom of the pressure vessel 110. ing. In the slag hopper 122 formed at the bottom of the pressure vessel 110, stored water is stored, and the lower end of the gasification furnace wall 111 is submerged in the storage water to seal the inside and outside of the gasification furnace wall 111. Stopped. Burners 126 and 127 are inserted into the gasification furnace wall 111, and the syngas cooler 102 is disposed in the internal space 154. The structure of the gasification furnace wall 111 will be described later.

  The annulus portion 115 is a space formed inside the pressure vessel 110 and outside the gasification furnace wall 111, that is, an external space 156. Nitrogen, which is an inert gas separated by the air separation facility 42, is not shown. It is supplied through a supply line. Therefore, the annulus portion 115 is a space filled with nitrogen. A pressure equalizing pipe (not shown) for equalizing the inside of the gasification furnace 101 is provided near the upper portion of the annulus 115 in the vertical direction. The in-furnace equalizing tube is provided so as to communicate between the inside and outside of the gasification furnace wall 111, and the pressure between the inside (combustor unit 116, diffuser unit 117, and reducer unit 118) of the gasification furnace wall 111 and the outside (annulus unit 115). The pressure is substantially equalized so that the difference is within a predetermined pressure.

  The combustor unit 116 is a space for partially burning pulverized coal, char, and air, and a combustion device including a plurality of burners 126 is disposed on the gasification furnace wall 111 of the combustor unit 116. The high-temperature combustion gas obtained by burning the pulverized coal and part of the char in the combustor unit 116 passes through the diffuser unit 117 and flows into the reducer unit 118.

  The reductor unit 118 is maintained at a high temperature required for the gasification reaction, supplies pulverized coal to the combustion gas from the combustor unit 116 and partially burns the pulverized coal to remove volatile matter (carbon monoxide, hydrogen, lower hydrocarbons, etc.). ) Is gasified and gasified to generate product gas, and a combustion device including a plurality of burners 127 is disposed on the gasification furnace wall 111 in the reducer section 118.

  The syngas cooler 102 is provided inside the gasification furnace wall 111 and is provided above the burner 127 of the reducer section 118 in the vertical direction. The syngas cooler 102 is a heat exchanger. The evaporator (evaporator) 131, the superheater (super heater) 132, and the nodes are arranged in this order from the lower side in the vertical direction of the gasification furnace wall 111 (upstream in the flow direction of the generated gas). A charcoal (economizer) 134 is provided. These syngas coolers 102 cool the generated gas by performing heat exchange with the generated gas generated in the reducer section 118. Further, the numbers of the evaporators (evaporators) 131, the superheaters (super heaters) 132, and the economizers (economizers) 134 are not limited to those shown in the drawings.

[About burner]
Next, a burner 126 and a burner 127 suitable for use with the measuring jig 200 according to an embodiment of the present disclosure will be described using the burner 126 as an example with reference to FIG.
FIG. 3 is an enlarged longitudinal sectional view of the tip of the burner 126, and is an enlarged longitudinal sectional view of a part A shown in FIG.

  The burner 126 is a coaxial multi-tube burner including a cooling pipe 170, an air pipe 180, and a fuel pipe 190.

  A part of the burner 126 on the tip side is located inside the furnace of the gasification furnace wall 111 (on the combustor section 116 side in FIG. 2).

The tubular cooling pipe 170 includes a first cooling pipe 170A and a second cooling pipe 170B, and surrounds the outer peripheral surface of the air pipe 180.
The first tubular cooling pipe 170A is spirally wound around the air pipe 180 around the burner axis CB. The wound first cooling pipe 170A is formed into a cylindrical shape as a whole.
The tubular second cooling pipe 170B is arranged on the outer peripheral side of the cylindrical first cooling pipe 170A. The second cooling pipe 170B extends from the outside of the gasification furnace wall 111 toward the inside of the furnace in the direction of the burner axis CB, and is then folded back into a U-shape to be connected to the first cooling pipe 170A. . The portion of the second cooling pipe 170B that is folded back into a U-shape is located on the inner side of the gasification furnace wall 111 relative to the first cooling pipe 170A. That is, the apex portion of the second cooling pipe 170B folded back into a U-shape is the protruding portion (tip) 172 of the cooling pipe 170 located most inside the gasification furnace wall 111.
The distal end 172 of the cooling pipe 170 is located on the inside of the gasification furnace wall 111 relative to the distal end 182 of the air pipe 180 and the distal end 192 of the fuel pipe 190.

  The air pipe 180 is formed in a tubular shape, and is housed inside the cooling pipe 170. The end 182 of the air tube 180 is located inside the gasification furnace wall 111 inside the furnace with respect to the end 192 of the fuel tube 190.

  The fuel pipe 190 is formed in a tubular shape, and is housed inside the air pipe 180.

  The cooling pipe 170, the air pipe 180, and the fuel pipe 190 have a common axis (burner axis CB), and the burner axis CB is the axis of the burner 126.

[Configuration of measuring jig]
Next, a measuring jig 200 according to an embodiment of the present disclosure will be described with reference to FIGS.
Here, FIG. 4 is an exploded perspective view of the measuring jig 200. FIG. 5 is a side view of the measuring jig 200. FIG. 6 is a view of the plate member 210 as viewed from the direction B shown in FIG. FIG. 7 is a view of the guide plate 231 viewed from the direction B shown in FIG. FIG. 8 is a view showing a modification of the guide plate 231. As shown in FIG.

  As shown in FIGS. 4 and 5, the measurement jig 200 includes a plate member 210 and a support member 230.

  As shown in FIGS. 4 to 6, the plate-like member 210 is a polygonal flat plate-like member having a contact surface 212 (see FIG. 5), a plurality of slits 213, and a reference surface 214. In the case of the present embodiment, for example, it is a regular hexagonal plate.

  A drill hole 216 is provided in the center of the plate-shaped member 210 so that a rod member 233 described later can be inserted therethrough.

  As shown in FIG. 5, the contact surface 212 is a flat surface that comes into contact with the tip 172 of the cooling pipe 170, and is orthogonal to the axis of the measurement jig 200 (the jig axis CJ). The surface of the plate member 210 opposite to the contact surface 212 is parallel to the contact surface 212.

  As shown in FIGS. 4 and 6, the slit 213 is a rectangular penetrating portion penetrating the plate member 210 in the plate thickness direction. The slit 213 has, for example, a rectangular shape that opens radially from the jig axis CJ side. Here, the plate thickness direction of the plate member 210 coincides with the direction of the jig axis CJ.

A plurality of slits 213 (eight in the case of FIG. 4) are provided radially at equal angular intervals about the jig axis CJ.
The square shape of the slit 213 has a predetermined side 213a. At this time, as shown in FIG. 6, the predetermined side 213a is along a straight line (center line) passing through the jig axis CJ. That is, the predetermined sides 213a are provided radially at equal angle θ intervals about the jig axis CJ.

  The predetermined one side 213a is preferably one side located on the same circumferential side around the jig axis CJ in the plurality of slits 213, and is, for example, one side located in a clockwise direction in a clockwise direction.

  As shown in FIGS. 4 to 6, the reference surface 214 is a plane orthogonal to the contact surface 212 and is formed on the outer peripheral surface of the plate member 210.

  As shown in FIG. 6, an angle measuring instrument such as a level 310 can be placed on the reference surface 214. Thereby, the angle of the plate member 210 (the rotation angle around the jig axis CJ) can be grasped. That is, the angle of the plate member 210 around the jig axis CJ and the angle of the slit 213 around the jig axis CJ can be determined with reference to the reference plane 214. For example, by making the reference surface 214 horizontal, the angle of the plate-like member 210 with respect to the horizontal direction can be determined.

  5 to 6, the plate-like member 210 has a regular polygonal shape centered on the jig axis CJ, and each side can be the reference plane 214. However, since it is not preferable from the viewpoint of reproducibility that the position of the reference plane 214 moves every time the measurement is performed, the reference plane 214 selects an appropriate side from the posture and operability at the time of measurement, and always refers to the same side. Preferably, the surface 214 is used.

  Further, the plate-like member 210 does not have to have a polygonal shape, as long as at least one reference surface 214 is formed. Also with this, the angle of the plate member 210 around the jig axis CJ and the angle of the slit 213 around the jig axis CJ can be determined with reference to the reference plane 214. Further, the reference plane 214 may not be in the horizontal direction. For example, the reference plane 214 may be aligned in the vertical direction by using a down swing instead of the level 310.

  As shown in FIGS. 4 and 5, the support member 230 has a plurality of (two in the case of FIG. 5) guide plates 231 and a rod member 233.

  As shown in FIGS. 4, 5, and 7, the guide plate 231 is a disc-shaped member having a fitting portion 231a.

  A screw hole 231b is provided in the center of the guide plate 231 and can be screwed to a rod member 233 described later.

  As shown in FIGS. 5 and 7, the guide plate 231 has a fitting portion 231 a having an outer diameter Dg that fits inside the fuel tube 190 with a small gap in the inner diameter df. In the case of the figure, the outer peripheral surface of the guide plate 231 becomes the fitting portion 231a.

  In addition, as shown in FIG. 8, the guide plate 231 does not need to be a complete disk shape, and it is sufficient that the guide plate 231 has a fitting portion 231a in which the outermost portion has an outer diameter Dg. That is, the guide plate 231 may have at least three points on the virtual circumference of the outer diameter Dg, and may have, for example, an equilateral triangle shape. In this case, the vertex of the equilateral triangle becomes the fitting portion 231a.

  As shown in FIGS. 4 and 5, the rod member 233 is a rod-shaped member extending in the direction of the jig axis CJ. The rod member 233 has an external thread formed on the outer peripheral surface.

  As shown in FIG. 5, a guide plate 231 is screwed into one end 233a of the rod member 233 via a screw hole 231b. At this time, the plurality of guide plates 231 are provided apart from each other in the direction of the jig axis CJ. The separation distance between the guide plates 231 can be adjusted by rotating the guide plate 231 about the jig axis CJ with respect to the rod member 233.

  On the other hand, the plate-shaped member 210 is inserted into the other end 233 b side of the rod member 233 through the through hole 216, and is fixed in a form sandwiched between the nut 260 and the nut 261. Thus, the plate member 210 is connected to the support member 230 (the guide plate 231 and the rod member 233). At this time, the contact surface 212 of the plate member 210 is orthogonal to the jig axis CJ of the rod member 233.

  As shown in FIGS. 4 and 5, the grip member 250 may be provided on the other end 233b side of the rod member 233 with respect to the plate member 210.

  The gripping member 250 is a rod-shaped member having a larger diameter than the rod member 233, and has a hexagonal cross section, for example. The gripping member 250 is a member provided so that an operator can easily hold and handle the measuring jig 200. On the outer peripheral surface of the gripping member 250, a process for increasing the gripping force may be performed, or a material (for example, rubber) acting as a non-slip may be provided.

[Measurement principle of measuring jig]
Next, a measurement principle of the measurement jig 200 according to an embodiment of the present disclosure will be described with reference to FIG.
FIG. 9 is a longitudinal sectional view of the burner 126 on which the measuring jig 200 is installed.

First, the measurement jig 200 itself is moved toward the inside of the burner 126 while the guide plate 231 of the measurement jig 200 is inserted into the fuel pipe 190. At this time, the jig axis CJ of the measuring jig 200 and the burner axis CB substantially coincide with each other due to the guide plate 231 fitted inside the fuel pipe 190. Strictly, the fitting portion 231a of the guide plate 231 has an outer diameter Dg and is fitted inside the inner diameter df of the fuel pipe 190 with a small gap. Therefore, the direction of the jig axis CJ is determined by the small gap. Influencing the error in doing so. On the other hand, since the plurality of guide plates 231 are provided apart from each other in the direction of the jig axis CJ, the jig axis CJ and the burner axis CB can coincide with each other within a practically acceptable range. Thereby, the contact surface 212 is orthogonal to the burner axis CB. In addition, a reference surface 214 which is always used as a reference is selected, and the angle of the plate member 210 is set to a predetermined angle (for example, a horizontal direction or a vertical method) by the reference surface 214.
When inserting the measuring jig 200 into the burner 126, a gripping member 250 may be used.

  When the measurement jig 200 is inserted along the direction of the burner axis CB, the contact surface 212 of the plate member 210 comes into contact with the tip 172 of the cooling pipe 170. Thereby, the position of the measuring jig 200 in the burner axis CB direction (insertion direction) is regulated. The rotation of the measuring jig 200 along the burner axis CB is regulated by the guide plates 231 separated from each other. That is, the measurement jig 200 (jig axis CJ) is suppressed from being inclined with respect to the burner axis CB.

  In this state, the rotation of the measurement jig 200 around the burner axis CB and the position of the measurement jig 200 in the burner axis CB direction (the direction in which the measurement jig 200 is pulled out) are not regulated. For this reason, the measuring jig 200 may be temporarily fixed to the burner 126 with an adhesive tape or the like. However, since the measurement jig 200 is relatively heavy and the guide plate 231 is fitted to the fuel pipe 190, the measurement jig 200 around the burner axis CB can be used without an adhesive tape or the like. The position of the measuring jig 200 in the direction of rotation and the burner axis CB (pull-out direction) is not easily moved, and can be maintained in a limited state to some extent.

  After the measurement jig 200 is attached to the burner 126, it is possible to measure the margin of the air pipe 180 and the fuel pipe 190. Specifically, it can be measured as follows.

  As shown in FIGS. 6 and 9, first, the measuring instrument 320 is inserted into the burner 126 through the slit 213. The measuring instrument 320 is, for example, a deposit, a scale, a caliper, a depth gauge, or the like.

  The measuring instrument 320 was inserted along the direction of the burner axis CB, and the measuring instrument 320 was formed on one side 213a of the slit 213 in a predetermined direction (for example, one side on the clockwise direction in the clockwise direction). The tip of the measuring instrument 320 is brought into contact with the tip 192 of the fuel pipe 190 while making contact with the side surface. Then, the measured distance a between the contact surface 212 and the tip 192 of the fuel pipe 190 is read. Thereby, the position (exit allowance) of the tip 192 of the fuel pipe 190 with reference to the tip 172 of the cooling pipe 170 can be grasped. At this time, the distance between the opposite surface of the contact surface 212 of the plate member 210 and the tip 192 of the fuel pipe 190 may be measured, and the plate thickness of the plate member 210 may be subtracted.

  Next, the measuring instrument 320 is moved in the radial direction of the slit 213 (in a direction away from the jig axis CJ), and the measuring instrument 320 is moved from the fuel pipe 190 to the air pipe 180. At this time, the measuring instrument 320 can be moved along a straight line passing through the jig axis CJ by bringing the measuring instrument 320 into contact with the side surface on which the predetermined side 213a of the slit 213 is formed (see FIG. 6). ). Thereby, the air pipe 180 and the fuel pipe 190 installed coaxially with respect to the burner axis CB can be measured at the same angular position (rotational position around the burner axis CB).

  The tip of the measuring instrument 320 is brought into contact with the tip 182 of the air pipe 180 in the same procedure as in the case of the fuel pipe 190. Then, the measured distance b between the contact surface 212 and the tip 182 of the air tube 180 is read. Thereby, the position (exit allowance) of the tip 182 of the air pipe 180 with respect to the tip 172 of the cooling pipe 170 can be grasped. At this time, the distance between the opposite surface of the contact surface 212 of the plate member 210 and the tip 182 of the air pipe 180 may be measured, and the plate thickness of the plate member 210 may be subtracted.

  Further, the distance between the tip 192 of the fuel pipe 190 and the tip 182 of the air pipe 180 is determined from the distance measurement value a of the fuel pipe 190 with respect to the contact surface 212 and the distance measurement value b of the air pipe 180, and is set as the extra c. be able to.

  By performing this for each slit 213, it is possible to grasp the allowance of the air pipe 180 and the fuel pipe 190 over the entire circumferential direction of the burner axis CB.

The present embodiment has the following effects.
The measuring jig 200 is a measuring jig 200 that is brought into contact with a cooling pipe 170 formed so as to surround the outer peripheral surface of the air pipe 180 of the burner 126. A plate-like member 210 having a contact surface 212 to be brought into contact with the tip 172 of the cooling pipe 170 located therein, and a plurality of slits 213 penetrating in a jig axis CJ direction orthogonal to the contact surface 212; And a support member 230 that supports the plate member 210 with respect to the burner 126 so as to be orthogonal to the burner axis CB direction of the burner 126. Thus, the contact surface 212 can be brought into contact with the tip 172 of the cooling pipe 170 in a state where the contact surface 212 is perpendicular to the burner axis CB of the burner 126, and the plate member 210 is supported by the burner 126, and Are formed with a plurality of slits 213 penetrating in a direction orthogonal to the contact surface 212 (that is, a direction along the burner axis CB). Thereby, the measuring instrument 320 is inserted into the burner 126 from the slit 213 along the direction of the burner axis CB, and is brought into contact with the measurement object, whereby the position in the burner axis CB direction from the reference contact surface 212 to the measurement object is reached. Can be easily measured. Further, by performing this measurement for each of the plurality of slits 213, it is possible to grasp the margin of the air pipe 180 and the fuel pipe 190 over the entire circumferential direction of the burner axis CB. In addition, since the plurality of slits 213 are formed in the plate-like member 210 in advance, it is not necessary to mark a measurement position each time measurement is performed. That is, since the same position can be measured by inserting the measuring instrument 320 into the slit 213, measurement with high reproducibility is possible.

  Further, since the slits 213 are provided at equal angular intervals in the circumferential direction around the jig axis CJ (substantially coincident with the burner axis CB), the fuel pipe 190 and the air are arranged at equal angular intervals around the jig axis CJ. The position of the tube 180 can be measured.

  The slit 213 has a rectangular shape that opens radially from the jig axis CJ and includes a predetermined side 213a that extends radially. The square 213a has a side of the jig when viewed from the jig axis CJ direction. Since the measuring instrument 320 is moved along the straight line passing through the axis CJ, the measuring instrument 320 is moved along the straight line passing through the jig axis CJ by moving the measuring instrument 320 by contacting the side surface of the predetermined side 213a. Can be. Thereby, the cooling pipe 170, the air pipe 180, and the fuel pipe 190 installed coaxially with respect to the burner axis CB can be measured at the same angular position (rotational position around the burner axis CB) with high accuracy.

  Further, in each square shape of all the slits 213, a predetermined side 213a along a straight line passing through the jig axis CJ is located on the same circumferential side around the jig axis CJ, so that the measuring instrument 320 Along a straight line (a straight line passing through the jig axis CJ or the burner axis CB) can be standardized. Thereby, it is possible to prevent the side along which the measuring instrument 320 is to be erroneous from being mistaken for each slit 213.

  Further, since the reference surface 214 which is a plane orthogonal to the contact surface 212 is formed on the plate member 210, the angle of the reference surface 214 is made the same (for example, in the horizontal direction or the vertical direction) every time the measurement is performed. By doing so, it is possible to prevent the angle of the slit 213 from moving each time measurement is performed. That is, measurement with high reproducibility can be realized.

  In addition, since the grip member 250 provided on the other end 233b side of the rod member 233 with respect to the plate member 210 is provided, an operator can grip the grip member 250 and the handling of the measuring jig 200 becomes easy.

  In the above description, the measuring jig 200 is attached to the burner 126, but it goes without saying that the measuring jig 200 can also be applied to the burner 127.

  Further, the measuring jig 200 is not limited to a burner having the outermost periphery formed by the cooling pipe 170, and can be applied to, for example, a burner having a coaxial multi-tube structure in which the outermost periphery is an air circulation unit.

The embodiment described above is grasped as follows, for example.
That is, the measurement jig (200) according to an aspect of the present disclosure is a measurement jig that is brought into contact with a cooling pipe (170) formed so as to surround the outer peripheral surface of the air pipe (180) included in the burner (126). A contact surface (212) for making contact with the protruding portion (172) of the cooling tube located inside the furnace wall (111) of the cooling tube; and a jig axis (CJ) direction orthogonal to the contact surface. A plate-like member (210) having a plurality of slits (213) penetrating the burner, and attaching the plate-like member to the burner such that the contact surface is orthogonal to a burner axis (CB) direction of the burner. And a supporting member (230) for supporting the supporting member.

According to the measuring jig according to the present aspect, the contact surface that makes contact with the cooling projection located most inside the gasification furnace wall of the cooling pipe, and the plurality of slits penetrating in the jig axis direction orthogonal to the contact surface And a supporting member for supporting the plate-like member with respect to the burner such that the contact surface is orthogonal to the burner axis direction of the burner. Thereby, the contact surface can be brought into contact with the tip of the cooling pipe in a state where the contact surface is perpendicular to the burner axis of the burner, the plate member is supported by the burner, and the plate member has a direction perpendicular to the contact surface ( That is, a plurality of slits penetrating in the direction along the burner axis CB) are formed. Thereby, the measuring instrument (320) is inserted into the burner from the slit along the direction of the burner axis and is brought into contact with the measurement object, so that the position in the burner axis direction from the reference contact surface to the measurement object can be easily set. Can be measured. In addition, by performing this measurement for each of the plurality of slits, it is possible to grasp the allowance of the air pipe and the fuel pipe over the entire circumferential direction of the burner axis.
Further, since the plurality of slits are formed in the plate-like member in advance, it is not necessary to mark a measurement position every time measurement is performed. That is, since the measurement at the same position can be realized by inserting the measuring instrument into the slit, measurement with high reproducibility is possible.

  In the measuring jig according to an aspect of the present disclosure, the plurality of slits are provided at equal angular intervals in a circumferential direction around the jig axis.

  According to the measuring jig according to this aspect, the slits are provided at equal angular intervals in the circumferential direction around the jig axis CJ (substantially coincident with the burner axis CB), so that the slits are equiangular around the jig axis. The positions of the fuel pipe and the air pipe can be measured at intervals.

  Further, in the measurement jig according to an aspect of the present disclosure, the plurality of slits are opened in the radial direction from the jig axis, and have a rectangular shape including one side (213a) extending radially. When viewed from the jig axis direction, the one side is along a straight line passing through the jig axis.

  According to the measuring jig according to the present aspect, the slit is opened in the radial direction from the jig axis, and has a square shape including a predetermined side extending radially, and the square shape is viewed from the jig axis CJ direction. When one side is along a straight line passing through the jig axis, the measuring jig is moved along a straight line passing through the jig axis by moving the measuring instrument by contacting the side surface on the predetermined one side. be able to. Thus, the cooling pipe, the air pipe, and the fuel pipe installed coaxially with respect to the burner axis can be measured at the same angular position (rotational position around the burner axis) with high accuracy.

  Further, in the measuring jig according to an aspect of the present disclosure, in each of the square shapes of all the slits, the one side along the straight line passing through the jig axis has the same circumference around the jig axis. It is located on the direction side.

According to the measuring jig according to this aspect, in each square shape of all the slits, a predetermined side along a straight line passing through the jig axis is located on the same circumferential side around the jig axis. Therefore, it is possible to standardize the operation of causing the measuring instrument to follow a straight line (a straight line passing through the jig axis or the burner axis).
Specifically, for example, a side to be brought into contact with the measuring instrument becomes clear by setting a side located on the clockwise side around the axis of the jig among the respective sides of the rectangular shape as a predetermined side. Thereby, it is possible to prevent the side along which the measuring instrument should be erroneously set from being mistaken for each slit.

  Further, in the measuring jig according to an aspect of the present disclosure, a reference surface (214) orthogonal to the contact surface is formed on the plate-shaped member.

  According to the measuring jig according to the present aspect, since the plate-shaped member is formed with the reference surface which is a plane orthogonal to the contact surface, the angle of the reference surface is the same for each measurement (for example, in the horizontal direction). Or the vertical direction), it is possible to prevent the angle of the slit from moving each time measurement is performed. That is, measurement with high reproducibility can be realized.

  Further, in the measurement jig according to an aspect of the present disclosure, the support member may include a plurality of plate-shaped guide plates (231), and extend in a direction of the jig axis, and have one end (233a) side. A rod member (233) connected to the plurality of guide plates at the other end (233b) and connected to the plate member at the other end (233b) side. Each of the guide plates is provided with a fuel pipe (190) of the burner. ), The fuel pipe has a fitting portion (231a) that fits inside the fuel pipe so that the jig axis and the burner axis are substantially coincident with each other in a state of being separated from each other along the direction of the jig axis. And the plate-shaped member is connected to the rod member such that the contact surface is orthogonal to the axis.

According to the measurement jig according to this aspect, the support member extends in the direction of the jig axis line with the plurality of plate-shaped guide plates, and the plurality of guide plates are connected to one end side and the other. A rod member to which a plate-shaped member is connected on the end side, wherein each guide plate has a fitting portion fitted to the inside of the fuel tube of the burner, and is separated from each other along the direction of the jig axis. In this state, the jig axis and the burner axis are inserted into the fuel pipe such that they substantially coincide with each other, and the plate-shaped member is connected to the rod member such that the contact surface is orthogonal to the jig axis. Thereby, rotation of the rod member (rotation along the burner axis direction) is restricted by the plurality of guide plates being fitted inside the fuel pipe. That is, the measuring jig (jig axis) is suppressed from tilting with respect to the burner axis.
The plate member connected to the other end of the rod member is connected to the rod member such that the contact surface is orthogonal to the jig axis. As a result, the contact surface of the plate member is in a posture orthogonal to the burner axis.

  Further, the measuring jig according to an aspect of the present disclosure includes a gripping member (250) provided on the other end side of the rod member with respect to the plate-shaped member.

  According to the measuring jig according to the present aspect, since the gripping member provided on the other end side of the rod member with respect to the plate-like member is provided, the operator can grip the gripping member and the handling of the measuring jig is easy. become.

Reference Signs List 10 Coal gasification combined cycle power plant 11 Coal supply facility 11a Coal supply line 14 Gasifier facility 15 Char recovery facility 16 Gas purification facility 17 Gas turbine 18 Steam turbine 19 Generator 20 Waste heat recovery boiler (hot water supply unit)
41 Compressed air supply line 42 Air separation equipment (nitrogen supply unit)
43 First nitrogen supply line 45 Second nitrogen supply line 46 Char return line 47 Oxygen supply line 48 Foreign matter removal equipment 49 Generated gas line 51 Dust collection equipment 52 Supply hopper 53 Gas discharge line 61 Compressor 62 Combustor 63 Turbine 64 Rotary shaft 65 Compressed air supply line 66 Fuel gas supply line 67 Combustion gas supply line 68 Booster 69 Turbine 70 Exhaust gas line 71 Steam supply line 72 Steam recovery line 73 Condenser 74 Gas purification equipment 75 Chimney 101 Gasifier 102 Syngas cooler 110 Pressure Vessel 111 Gasification furnace wall (furnace wall)
115 Annulus section 116 Combustor section 117 Diffuser section 118 Reductor section 121 Gas outlet 122 Slag hopper 126 Burner 127 Burner 131 Evaporator 132 Superheater 134 Energy saving device 154 Internal space 156 External space
170 Cooling pipe 170A First cooling pipe 170B Second cooling pipe 172 Tip (projection of air pipe)
180 Air tube 182 tip (tip of air tube)
190 Fuel pipe 192 tip (tip of fuel pipe)
200 Measurement jig 210 Plate-like member 212 Contact surface 213 Slit 213a Predetermined side 214 Reference surface 216 Drill hole 230 Support member 231 Guide plate 231a Fitting portion 231b Screw hole 233 Rod member 233a One end 233b Other end 250 Grip members 260, 261 Nut 310 level 320 measuring instrument

Claims (7)

A measurement jig for contacting a cooling pipe formed to surround an outer peripheral surface of an air pipe having a burner,
A plate-shaped plate having a contact surface that comes into contact with a protruding portion of the cooling tube that is located most inside the furnace wall of the cooling tube, and a plurality of slits that penetrate in a jig axis direction orthogonal to the contact surface. Components,
A support member for supporting the plate-like member with respect to the burner such that the contact surface is orthogonal to a burner axis direction of the burner;
A measuring jig equipped with   The measurement jig according to claim 1, wherein the plurality of slits are provided at equal angular intervals in a circumferential direction with respect to a center of the jig axis. The plurality of slits are opened in the radial direction from the jig axis, and have a square shape including one side extending radially,
The measuring jig according to claim 2, wherein the rectangular shape has a side along a straight line passing through the jig axis when viewed from the jig axis direction. In each of the square shapes of all the slits,
The measuring jig according to claim 3, wherein the one side along the straight line passing through the jig axis is located on the same circumferential side around the jig axis.   The measuring jig according to claim 1, wherein a reference surface orthogonal to the contact surface is formed on the plate member. The support member,
A plurality of plate-shaped guide plates,
A rod member extending in the axial direction of the jig, the plurality of guide plates being connected to one end, and the plate member being connected to the other end;
With
Each of the guide plates has a fitting portion fitted to the inside of the fuel tube of the burner, and the jig axis and the burner axis substantially coincide with each other in a state of being separated from each other along the burner axis direction. So that it is inserted into the fuel pipe,
The measuring jig according to claim 1, wherein the plate-shaped member is connected to the rod member such that the contact surface is orthogonal to the jig axis.   The measuring jig according to claim 6, further comprising a gripping member provided on the other end side of the rod member with respect to the plate-shaped member.

Images