JP3450232B2 - Loading equipment for combustion and gasification plants. - Google Patents

Abstract

In the apparatus, the feeding element (14) has a sliding section (15) for movement of fuel and at least an adapter (16) having a cylindrical form and leads to a guiding devices (18,19,20). The adapter (16) grips to the feeding apparatus by means of a sealing device (21,22). In an apparatus for combustion- and gasifying plants, the fuel from feeding funnel is placed over a feeding table using a feeding element in the plant.

Description

Detailed Description of the Invention

[0001]

The present invention relates to the fuel, at least one of the loading member, is introduced into the plant via the feed table from the feed hopper, in which the loading member may send the order to move the fuel portion, and has a guide portion, the guide portion, it have a cylindrical shape
And in the style being guided by the guidance function unit ,
A loading device for a combustion and gasification plant.

[0002]

2. Description of the Related Art A known charging device has a function of metering fuel and charging it into a combustion and gasification plant. For this purpose, in the past a single flat-shaped loading piston or a number of such flat-shaped loading pistons have been used, which are designed to supply the fuel onto the combustion grate or into the combustion furnace. It was placed on a flat loading table and reciprocated. Moreover, these loading devices must have a very large linear sealing surface to prevent the piston from undesirably drawing the fuel mass into the region behind the loading piston. It has drawbacks. Besides, especially for manufacturing a straight sealing surface,
This is particularly difficult because such loading pistons are subject to additional thermal stress. At the turning point in front of the piston, i.e. when the piston is in the end position close to the combustion or gasification chamber, significant heat radiation to the front part of the loading piston occurs. This heating is
Irregular heating is induced in the case of large loading pistons, thus causing a warpage that causes serious unsealing. Such warpage causes the fuel to reach behind the loading piston and mechanically blocks the loading piston.

Special difficulties always arise when the loading device must be sealed both at the gas inlet and at the outlet. This gap is not particularly necessary in gasification plants where the fuel is not completely converted, but rather in the gasification plant where combustible, possibly toxic, gas mixture articles are produced. It is necessary to meet them.

From Japanese Patent Laid-Open Publication No. 46-32824, an incinerator (loading device) of the type mentioned at the beginning is known, in which case the plunger (feeding part) is a trough (supply table). ) Is slidably fitted to a transfer groove or a supply pipe (transfer tube) connected to the transfer groove, and is in a state of being connected to a piston rod. We will provide guidance. Because this piston rod
Engaged to the hydraulic cylinder (working cylinder), the task Siri
This is because the binder moves the feeding portion via the guide rod. The disadvantages of this arrangement are not only the fact that there is no gap and thus the gas leaves the combustion furnace via the charging device to the outside, but also that the guide member is formed as a relatively long piston rod. The fact that this piston rod is therefore not guided over a very long area in the extended state, so that only a slight guiding force is transmitted to the feed section. This piston rod is first of all configured for linear movement.

Further, Japanese Patent Laid-Open Publication No. 59-147
631 discloses a transfer device for powdered material, which is transferred into a reduction furnace. The transfer member has a piston (feed part) and a piston rod, and the piston rod is gripped by a shaft seal (sealing packing). This piston rod is
It is basically smaller in diameter than this feed section. The piston rod is usually sealed by a sealing material. There is no gap in the feed section which is basically large in diameter.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a loading device which, due to the structural construction of the loading member, allows easy and reliable sealing, especially with regard to gas exchange and reliable guidance. Is to provide.

[0007]

SUMMARY OF THE INVENTION According to the invention, the above-mentioned object is a loading device of the type described at the outset, in which the guide
The part is held by the sealing device, the loading member
But as a whole, regarding this guide part and feed part
Formed as a cylindrical piston with a constant diameter
And this sealing device also
Working together with the part, it is solved.

This construction not only allows a structurally simple construction of the loading element on the basis of a cylindrical construction, but rather this cylindrical construction allows an annular packing, which is an annular packing. Is not only relatively simple or inexpensive, but rather seals significantly more effectively than packing, for example for flat surfaces. The configuration of the feed and guide parts as a cylindrical piston with a constant diameter and the sealing of the guide member realizes an improvement over the prior art by means of a sealing device and is not implied by this prior art. Because both known loading devices each have a feed portion which is essentially larger in diameter than the guide portion, the sealing device for the guide portion having the same diameter as the feed portion, This is because it cannot be derived from the piston rods corresponding to the above-mentioned two publications.

In the arrangement according to the invention, this sealing function serves not only for the airtight closure but also for avoiding the entry of fuel into the chamber behind the feed section. . Such an arrangement not only has the advantage of an annular packing, but it is possible to provide a large number of such packings one behind the other, due to the overall cylindrical shape of the loading member. It has the advantage of
Moreover, the manufacture of such a loading member is relatively easy. Because these shapes with the same diameter for the cylindrical feed and guide parts are easier to manufacture than loading members with different diameters for the feed and guide parts and are basically rectangular Alternatively, it is easier to manufacture than a square feed piston.

According to another configuration according to the invention, it has also been found to be advantageous for the feed part to have a surface structure which is different from the surface structure of the guide part. Such different
The surface topography can be achieved by processing or by using other materials. In order to reach an exceptionally good sealing, it is necessary to provide the guide part with a relatively high surface quality, which is not necessary for the rough operation of the feed part in contact with the supplied combustion substances.

Another advantageous configuration according to the invention comprises two sets of guide features for the guide part, each set of three guide rollers being spaced apart from one another,
In this case, at least one of the three guide rollers is designed to be radially adjustable with respect to the guide part.

An optional and advantageous design of the loading device is such that at least one pair of mutually facing guide features for the guide portions are rotatably mounted on the loading member and guided in the profile rail. It is provided with a traveling roller provided.

The profile rail is provided outside the sealing function and accommodates at least a pair, in particular two pairs of mutually facing guide rollers, the axes of rotation of which are feed. Located perpendicular to the piston axis, these guide rollers run in a U-shaped guide rail.

These guide function parts are structurally simple and practically have few failures. This is because filth has only a slight effect on these guiding functions.

A particularly advantageous configuration of the invention is that the loading member is
The piston of this loading member is formed as a hollow piston
With ton jacket portion, is guided in the guide cylinder which acts as a guiding function unit, in which, the guide cylinder, with the front end portion in the feeding direction of the loading member of the guide cylinder, the combustion and gasification chamber the opposite is fixed in the partition wall of the loading device is that it is and provided on the outside of the partition wall. Such a loading member can be easily manufactured. This is because it is only necessary to start from a drawn tube to make this loading element, since this makes the production of such loading elements significantly easier. In such a loading element, it is advantageous if the guide function comprises two plain bearing bushes which are arranged in the guide cylinder at a distance from one another.

The construction of the loading element as a hollow piston is the premise of another advantageous design of the invention, in which the band tube is inserted in the hollow loading element.
And a drive device for reciprocating movement of the loading member at the front end projecting into the loading member of the band tube , which is detachably connected to the loading member at the bottom of the piston (the rear end of the loading member ) . Is attached. A particular advantage is that the point of action of the drive can be moved deep into the hollow piston, so that the space at the rear end of the loading member for mounting the drive is reduced. The advantage of the detachable connection of the carrying tube with the loading member is that the connection between the drive and this carrying tube can be made before the carrying tube is introduced into the loading member. There is a point to say. This favors the assembly of such loading members.

A particularly advantageous design is the use of a piston-cylinder unit which, in accordance with the further design according to the invention, is almost completely in the retracted end position. It is configured to be housed in the banding tube. This results in the least amount of space behind the loading member. This is because the connection point between the drive and the loading member is moved in the immediate vicinity of the front end of the loading member, which plays a large assembly role without the use of such a banding tube.

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

[0019]

DETAILED DESCRIPTION OF THE INVENTION The combustion plant shown in FIG. 1 comprises a grate 1, a charging device 2 and a combustion chamber 3. This combustion chamber is equipped with a gas suction part (gas) 4, which is connected to the other gas suction parts and to the rear of the combustion plant, in particular not shown here in detail or explained. Not connected steam generation plant and waste gas purification plant.

The grate 1 is made up of individual grate stages 5, each of which is associated with a second drive mechanism, generally designated by 6, which permits the adjustment of the flame velocity (Schuergeschwindigkeit). There is. Below the grate, there is a forced ventilation chamber (Unterwi
ndkammer) 7.1 to 7.5, these undergrate blasts are separately fed with primary air via a single conduit 8.1 to 8.5. At the end of the grate, the combusted sludge is discharged by the sludge discharging device into the sludge drop chute 10 by the sludge roll 9 in the illustrated embodiment of the invention, from which the sludge is illustrated. No fall into sludge ejector.

The loading device 2 comprises a feeding hopper 11, a feeding chute 12, a feeding table 13 and at least one loading member 14. This loading member loads the dust that slides down in the supply chute 12 into the combustion chamber 3 through the loading edge portion 13 ′ of the supply table 13 and sends it to the grate 1.

The loading member 14 basically comprises a feed portion 15 and a guide portion 16. They may have different shapes, as will be apparent from the different embodiments of the invention.

In the embodiment of the invention illustrated in FIGS. 2-8, the loading member 14 is generally a hollow hollow piston, the front portion of which is in contact with the fuel 17 being conveyed. The feed portion is indicated by reference numeral 15 and the remaining guide portion is indicated by reference numeral 16.
This guide part always remains in the guide cylinder 18, even when it is in the most slid forward position, as shown in FIG. 2, in which the guide part 16 is guided by slide bearings 19 and 20. You are being guided. Reference numerals 21 and 22 designate packings for achieving a gas-tight seal of the loading member. If the feed part 15 differs from the guide part 16 in terms of its surface quality and surface properties, the front packing 21 acts as a scraping device for the moment and the feed part 15 fits into this scraping device. On the other hand, the rear packing 22 cooperating with the guide part 16 provided with a smooth surface is provided for the gas leaving the combustion chamber or drawn into the combustion chamber in the form of ambient air or in the form of secondary air. Make a good seal.

A banding tube 23 is provided in the loading member 14, and this banding tube is located at the rear end portion ( pinch) of the loading member 14.
Ton bottom) 24, and thus to the piston of this loading member opposite the combustion chamber. A link portion 25 for fixing the piston rod 26 of the drive unit 27 is provided at the front end portion of the band tube 23. As is clear from FIG. 3, the drive unit 27 is almost completely housed in the band tube 23 with the loading member 14 pulled back. In the forwardly slid end position shown in FIG. 2, the cylinder of the drive unit 27 is located almost completely outside the band tube 23. This reduces the inconvenience of the rear link section 28 by the banding tube, which is necessary for the rearward arrangement of the link section 28 and, in addition, the banding tube allows for the assembly of the front link section 25. to enable. This gives a remarkably convenient assembly function in the direct fastening of this link part to the feed part, in a position which is as far forward as possible.

FIGS. 4 and 5 show a modified embodiment of the invention of the guiding and sealing functions of the loading member 14. In the embodiment of the present invention, three guide rollers 29 that are aligned in the radial direction are provided.
At least one of these guide rollers, namely FIG.
The upper guide roller shown in FIG. 1 is adjustable in the direction of the double arrow 30. In order to seal the loading member 14, the back wall 31 of the supply chute 12 surrounds the guide part in a sealed state and is fixed to this back wall.
Is provided.

6 and 7 show another inventive embodiment of the guiding function of the loading member 14. In the embodiment of the present invention, the lateral traveling rollers 33 provided in the lateral direction are guided in the respective rails 34. In this case, the packing 32 corresponds to the packing in FIG.

Overall, the construction of the loading member as a cylindrically shaped piston requires the provision of a number of such loading members 14 in parallel, as is apparent from FIGS. 8 and 9. There is. In this case, these loading members are housed in the guide trough 35.

The loading members may--as shown--be provided horizontally, or they may be tilted upwards at an angle or downwards. .

The basic idea which is common to all embodiments of the invention is that the loading member comprises a feed part and a guide part, in which case the guide part guides and seals the feed part of the loading member. Therefore, the gas generated in the combustion and gasification plant does not escape to the outside, and the secondary air is sucked into the combustion plant, which adversely affects the combustion process and the gasification process. That is, the loading member is formed so as not to have a bad influence.

[0030]

The combustion and gasification plant according to the invention makes it possible to achieve an easy and reliable sealing space by virtue of the peculiar structural construction of its charging member.

[Brief description of drawings]

1 is a schematic longitudinal sectional view of a combustion plant, FIG.

FIG. 2 is a side view showing a partial cross section of the loading device in a state where a loading member is exposed.

In Figure 3 loading apparatus, in a state in which the loading member is pulled back,
FIG. 3 is a partial sectional view according to FIG. 2.

FIG. 4 is a diagram showing a modified embodiment of the invention.

5 is a cross-sectional view taken along the section line VV of FIG.

FIG. 6 is a diagram showing another modified embodiment of the invention.

7 is a cross-sectional view taken along the cutting line Va-Va in FIG.

FIG. 8 is a partial front view of the loading device according to FIG.

FIG. 9 is a diagram showing an embodiment modified from the embodiment of the invention shown in FIG.

[Explanation of symbols]

1 Grate 2 Loading Device 3 Combustion Chamber 5 Lattice Stage 9 Sludge Roller 11 Supply Hopper 12 Supply Chute 13 Supply Table 14 Loading Member 15 Feeding Part 16 Guide Part 17 Fuel 18 Guide Cylinder 19 Sliding Bearing 20 Sliding Bearing 21 Packing 22 Packing 23 Band Row tube body 24 Rear end portion of loading member , piston bottom portion 25 Link portion 26 Piston rod 27 Drive unit 28 Link portion 29 Guide roller 30 Two-way arrow 31 Back wall of supply chute 32 Packing 36 Feed portion 38 Sliding bearing 39 Packing device

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Johannes Josef Edmund Martin, Federal Republic of Germany, 81929 Miyunchen, Ina-Seidel-Bogen, 62 (72) Inventor Peter Weaver, Federal Republic of Germany, 80637 Miyunchen, Hedwig -Dransfelt-array, 40 (56) Reference JP-A-3-194311 (JP, A) JP-A-59-147631 (JP, A) JP-A-3-99114 (JP, A) JP-A-10 -132247 (JP, A) JP 60-23716 (JP, A) JP-B 46-32824 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) F23K 3/16 F23G 5/44

Claims (6)

(57) [Claims] Is wherein 01] fuel, at least one loading member
By (14), is introduced into the plant via the feed table from a supply hopper (11), in which the loading member (14) is feeding portion for moving the fuel (1
5) and a guide portion (16) , which guide portion has a cylindrical shape and
In a loading device for a combustion and gasification plant of the type guided by internal functions (18, 19, 20) , a guide part (16) is provided by a gap device (21, 22).
Being gripped, the loading member (14) as a whole
The guide part (16) and the feed part (15).
Formed as a cylindrical piston with a constant diameter
That it is, and this Fusuki device (21) is likewise the feed portion (15)
A loading device characterized in that it also cooperates with it . 02. The feed part (15) is a guide part (16)
The loading device according to claim 1, wherein the loading device has a surface three- dimensional structure different from that of the above. 03. The guide function for the guide part (16) comprises two spaced apart sets of three guide rollers (29), in which case these three guide rollers (29). 3. Loading device according to claim 1 or 2, characterized in that at least one of the rollers is arranged to be adjustable radially with respect to the guide portion (16). The claim 04] guiding function unit is provided with two sliding bearing bush which is provided spaced apart from each other in the guide cylinder (18) in (19, 20) in claim 1 or 2, characterized in The loading device described. 05. A banding tube (23) is inserted in a hollow charging member (14) and a piston bottom (2) is provided.
4) at the front end which is detachably connected to the loading member (14) and which projects into the loading member (14) of the band tube (23) for reciprocating movement of the loading member (14). 5. Loading device according to claim 4 , characterized in that the drive device (27) is attached. 06. A piston-cylinder-unit (2
7. When using (7), the piston-cylinder unit is adapted to be pulled back and housed almost completely in the banding tube (23) in the end position. 5. The loading device according to item 5 .