CN208171397U - A kind of device of real-time detection coal gasifier bed drain purge - Google Patents
A kind of device of real-time detection coal gasifier bed drain purge Download PDFInfo
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- CN208171397U CN208171397U CN201820731075.0U CN201820731075U CN208171397U CN 208171397 U CN208171397 U CN 208171397U CN 201820731075 U CN201820731075 U CN 201820731075U CN 208171397 U CN208171397 U CN 208171397U
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- 239000003245 coal Substances 0.000 title claims abstract description 62
- 238000011897 real-time detection Methods 0.000 title claims abstract description 10
- 238000010926 purge Methods 0.000 title abstract 4
- 238000001514 detection method Methods 0.000 claims abstract description 100
- 239000002893 slag Substances 0.000 claims abstract description 81
- 238000002309 gasification Methods 0.000 claims abstract description 13
- 239000013049 sediment Substances 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses a kind of devices of real-time detection coal gasifier bed drain purge, are related to Coal Gasification Technology field, to solve the problems, such as to detect the bed drain purge of coal gasifier in real time and accurately.Wherein, which includes：The detection lug being installed on inside the slag bucket of coal gasifier, the projection of the scum pipe of coal gasifier along the vertical direction can be fallen on detection lug；The sliding bar connecting with detection lug, sliding bar pass through slag bucket wall and can axially move；The potentiometer being connect with sliding bar；The elastomeric element being connected between detection lug and slag bucket wall；The processor being electrically connected with potentiometer.Above-mentioned apparatus is installed on the slag bucket of coal gasifier, for real-time and accurately detecting the bed drain purge of coal gasifier.
Description
Technical Field
The utility model relates to a coal gasification technical field especially relates to a device of real-time detection coal gasifier row's sediment volume.
Background
Coal gasification refers to a process of reacting and converting coal into useful gas in a coal gasifier at a certain pressure and temperature, a certain amount of ash slag is generated and discharged simultaneously in the process, and the stability of the coal gasification process can be judged by detecting the slag discharge amount of the coal gasifier.
In the prior detection of the slag discharge amount of the coal gasifier, the following two methods are adopted for obtaining the slag discharge amount: firstly, weighing ash slag after the ash slag is discharged from a slag hopper; and secondly, obtaining the slag discharge amount according to the height of the material level in the slag hopper by installing a ray material level meter. However, the detection device adopting the first method has a problem that the amount of discharged slag cannot be detected in real time, and the detection device adopting the second method can detect in real time, but is greatly influenced by the shape and density of the ash slag, so that the accurate amount of discharged slag cannot be obtained.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a device of real-time detection coal gasifier row's sediment volume for solve unable real-time and accurately detect coal gasifier's the problem of row's sediment volume.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a device of real-time detection coal gasifier row's sediment volume, include: the detection piece is arranged in a slag hopper of the coal gasification furnace, and the projection of a slag discharge pipe of the coal gasification furnace along the vertical direction can fall on the detection piece; the sliding rod is connected with the detection sheet, penetrates through the slag hopper wall of the coal gasification furnace and can move axially; the potentiometer is connected with the sliding rod; the elastic component is connected between the detection sheet and the slag hopper wall of the coal gasifier; and the processor is electrically connected with the potentiometer.
When the device for detecting the slag discharge amount of the coal gasifier in real time is used for detecting the slag discharge amount of the coal gasifier, the detection sheet is firstly used for bearing the slag discharged by the slag discharge pipe of the coal gasifier, the horizontal component force of the acting force of the slag on the detection sheet can enable the detection sheet to push the sliding rod to move, one end of the sliding rod, far away from the detection sheet, drives the resistance of the potentiometer to change, the detection sheet compresses the elastic part, the elastic part generates elastic force on the detection sheet until the elastic force and the horizontal acting force of the slag on the detection sheet reach balance, then a processor connected with the potentiometer is used for obtaining the resistance change value of the potentiometer, and due to the fact that a series of variables of the resistance change value, the sliding rod displacement amount, the elastic part compression amount, the horizontal acting force of the slag on the detection sheet, the slag gravity and the slag quality have a relevant relationship, the slag discharge amount of the coal gasifier can be obtained through real, therefore, the slag discharge amount of the coal gasifier is detected in real time, and the detection accuracy is high.
Based on the above technical scheme, optionally, the projection center of the slag discharge pipe of the coal gasifier along the vertical direction coincides with the connection point of the detection piece and the sliding rod.
Optionally, the detection piece has two mutually perpendicular's symmetry axis, and one of them symmetry axis is horizontal symmetry axis, the slide bar with the crossing point of detecting the piece is the central point of detecting the piece, the slide bar with horizontal symmetry axis mutually perpendicular, just the slide bar sets up along the horizontal direction.
Optionally, the angle formed by the detection sheet and the horizontal plane ranges from 30 degrees to 60 degrees.
Optionally, the angle formed by the detection sheet and the horizontal plane is 45 °.
Optionally, the elastic component is a spring, and the number of the spring is one, and the spring is wound outside the sliding rod; or the number of the springs is two, wherein the springs at least comprise two springs with the same stiffness coefficient and length, and the springs are symmetrically arranged on two sides of the sliding rod respectively and are positioned in the same horizontal plane with the sliding rod.
Optionally, the range of the surface roughness of the detection sheet facing the slag discharge pipe is Ra being less than or equal to 1.6 μm.
Optionally, the potentiometer is a linear potentiometer.
Optionally, the device for detecting the slag discharge amount of the coal gasifier in real time further comprises a display mechanism connected with the processor and used for displaying the calculation result of the processor on the slag discharge amount in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural diagram of a device for detecting the slag discharge amount of a coal gasifier in real time according to an embodiment of the present invention;
FIG. 2 is a force analysis diagram of the test strip according to the embodiment of the present invention;
fig. 3 is a front view of a position relationship of the detecting plate, the sliding rod and the spring according to the embodiment of the present invention;
FIG. 4 is a bottom view of the positional relationship of the sensing plate, slide bar, and spring shown in FIG. 3;
fig. 5 is a front view of another positional relationship of the detection piece, the sliding rod and the spring according to the embodiment of the present invention.
Description of reference numerals:
100-coal gasification furnace; 1-a slag hopper; 2-a slag discharge pipe;
3-detecting the sheet; 301-a first surface; 302-a second surface;
31-a first axis of symmetry; 32-a second axis of symmetry; 4-a slide bar;
5-an elastic member; 51-spring 6-potentiometer;
61-an electric brush; 62-resistor body; 7-a processor;
8-a display mechanism; 9-ash.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the drawings are described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The embodiment of the utility model provides a device of real-time detection coal gasifier row's sediment volume, include: a detection sheet 3 installed inside the slag bucket 1 of the coal gasification furnace 100, on which the projection of the slag discharge pipe 2 of the coal gasification furnace 100 in the vertical direction can fall; a sliding rod 4 connected with the detection sheet 3, wherein the sliding rod 4 penetrates through the slag hopper wall of the coal gasifier 100 and can move axially; a potentiometer 6 connected to the slide lever 4; an elastic member 5 connected between the detection piece 3 and the slag bucket wall of the coal gasifier 100; and a processor 7 electrically connected to the potentiometer 6.
The detection sheet 3 is installed inside the slag bucket 1 of the coal gasifier 100, and for convenience of description, two opposite surfaces of the detection sheet 3 are respectively named as a first surface 301 and a second surface 302, and the first surface 301 faces the slag discharge pipe 2 of the coal gasifier 100. The projection of the slag pipe 2 in the vertical direction can fall on the upper detection plate 3, in particular on its first surface 301. Meanwhile, the detection sheet 3 and the horizontal plane form an acute angle, so that when ash slag generated by the coal gasifier 100 falls on the first surface 301 of the detection sheet 3 through the slag discharge pipe 2, a horizontal acting force can be generated on the detection sheet 3, and the ash slag can be ensured to fall from the detection sheet 3.
Slide bar 4's one end is connected with the second surface 302 that detects piece 3, and the other end passes the slag bucket wall, drops to when detecting piece 3 on to detecting the piece production horizontally effort, detects piece 3 and can drive slide bar 4 and be axial motion, more specifically, is along the direction motion of horizontal direction towards keeping away from detecting piece 3. The connection between the slide rod 4 and the detection piece 3 may be a fixed point connection.
The other end of the sliding rod 4 passes through the slag hopper wall and then is connected with the potentiometer 6, and when the sliding rod 4 moves in the direction far away from the detection sheet 3 along the horizontal direction, the resistance value of the potentiometer 6 changes along with the movement.
The second surface 302 of the detection sheet 3 is connected with an elastic component 5, one end of the detection sheet 3 far away from the elastic component 5 is connected with the wall of the slag hopper (actually the inner wall of the slag hopper 1), when no ash exists on the detection sheet 3, the elastic component 5 is in a natural state, namely a state without compression and stretching, and the length of the elastic component 5 is the original length. When ash exists on the detection sheet 3, the elastic part 5 is compressed by the detection sheet 3 to be in a compressed state, and generates elastic force to react on the detection sheet 3, and the elastic force is gradually increased along with the movement of the detection sheet 3 until the detection sheet 3 stops moving. When the ash falls off the detection sheet 3, the elastic component 5 is used for resetting the detection sheet 3, so that the detection sheet 3 returns to the initial position (namely, the position in the natural state) to perform the detection at the next moment.
The potentiometer 6 is electrically connected to the processor 7, and the processor 7 can acquire the resistance change value of the potentiometer 6 and calculate the real-time slag discharge amount of the coal gasifier 100 from the resistance change value.
It can be seen from the above device that there is a correlation between ash mass, ash gravity, horizontal acting force of ash to the detection sheet 3, compression amount of the elastic component 5, displacement of the sliding rod 4, and resistance change value of the potentiometer 6, when the resistance change value of the potentiometer 6 is obtained, the ash mass can be calculated according to the resistance change value, so as to realize real-time detection of ash mass, and because the factor causing resistance change is only horizontal acting force of ash to the detection sheet 3, the calculated ash mass detection value is more accurate.
Based on the above technical solution, as shown in fig. 1, as a possible design, the projection center O of the slag discharging pipe 2 of the coal gasifier 100 along the vertical direction coincides with the connection point of the detection piece 3 and the sliding rod 4, specifically, the connection point of the second surface 302 and the sliding rod 4, so that the force action point of the ash dropped from the slag discharging pipe 2 on the detection piece 3 coincides with the force action point of the detection piece 3 on the sliding rod 4 as much as possible, thereby balancing the stress of the detection piece 3, reducing the detection error, and increasing the detection accuracy.
Further, as shown in fig. 3 and 4, the detection sheet 3 has two first symmetry axes 31 and second symmetry axes 32 perpendicular to each other, which makes the surface shape of the detection sheet 3 a regular pattern with a center point (centroid), which may be a circle, an ellipse, a rectangle, a diamond or other patterns with two symmetry axes perpendicular to each other. When the detection piece 3 is mounted, the first axis of symmetry 31 of the detection piece 3 is made parallel to the horizontal plane. In addition, the crossing point of slide bar 4 and detection piece 3 coincides with the above-mentioned central point that detects second surface 302 of piece 3, and slide bar 4 level setting to make the ash residue that drops to the horizontal action of detecting piece 3 and act on the central point that detects the piece, detect the axial of slide bar 4 is followed to the effort of piece 3 to slide bar 4, thereby the interact situation between the three is more balanced, further increases the accuracy that detects.
In addition, as a possible design, the angle range between the detection sheet 3 and the horizontal plane should not be too large or too small, which would result in a narrow detection range. Based on this, the angle formed by the detection sheet and the horizontal plane can be in the range of 30-60 degrees. Further, the angle may be 45 °.
The design of the above-mentioned angular range can be derived according to the following process: regarding the position relationship between the detecting plate 3 and the sliding rod 4 shown in fig. 3 and 4, i.e. the sliding rod 4 is perpendicular to the horizontal symmetry axis of the detecting plate 3, and the connection point between the sliding rod 4 and the detecting plate 3 is the center point of the detecting plate 3, as shown in fig. 2, assuming that the angle between the detecting plate 3 and the horizontal plane is θ, the gravity of the ash 9 is G, and the gravity G can be decomposed into a downward force F parallel to the surface of the detecting plate 31And is perpendicular toForce F on the surface of the test piece 32F is a force acting on the detection piece 32Force F2Can be decomposed into vertical downward force F21And a horizontal force F22The force F acting to push the detection sheet 3 horizontally22. According to the analysis of the stress, it can be known that,
F22＝F2·sinθ＝G·sinθ·cosθ＝0.5G·sin2θ
according to the formula and the curve chart of the sine function, when the angle theta formed by the detection sheet 3 and the horizontal plane is 45 degrees, the value of sin2 theta reaches the maximum value: 1, F22Taking the maximum value: 0.5G, the angle range of θ can be set to about 45 °, for example, 30 ° to 60 °, preferably 45 °, and the detection range of ash mass is relatively large in the above design.
In this embodiment, the first surface 301 of the detection sheet 3 facing the slag discharge pipe needs to be as smooth as possible, specifically, the surface roughness range of the first surface 301 may be Ra less than or equal to 1.6 μm, so as to ensure that ash can fall off the detection sheet 3 in time, thereby increasing the detection accuracy.
As an optimized design of this embodiment, as shown in fig. 1, the potentiometer 6 may be a linear potentiometer, and includes a brush 62 and a resistor 61, the sliding rod 4 may be fixedly connected to the brush 62, and when the sliding rod 4 drives the brush 62 to move along the axial direction of the sliding rod 4, the resistance of the resistor 61 connected to the circuit changes regularly along with the contact and sliding of the brush 62 on the resistor 61, so that the resistance of the potentiometer 6 changes regularly.
The utility model provides an among the device of real-time detection coal gasifier row's sediment volume, be unlimited to elastomeric element 5's design, as long as it can make detect piece 3 reset can. As a possible design, as shown in fig. 3 and 4, the elastic component 5 may include two springs 51 symmetrically disposed on the left and right sides of the sliding rod 4, and the stiffness and length thereof are the same, and the springs are disposed in the same horizontal plane in parallel with the sliding rod 4, so that the force applied to the detecting plate 3 is more balanced, thereby reducing the detecting error and increasing the detecting accuracy.
As another design of the elastic member 5 in the present embodiment, as shown in fig. 5, the elastic member 5 may also include two springs 51 symmetrically disposed on the upper and lower sides of the sliding rod 4, respectively, and the stiffness coefficients of the two springs 51 are the same, and the two springs 51 and the sliding rod 4 are in the same plane, which is perpendicular to the second surface 302 of the detecting plate 3.
In a further design, it is also possible to use the design of the spring 51 shown in fig. 3, 4 in combination with the design of the spring 51 shown in fig. 5.
In addition, the number of the springs 51 in the embodiment may also be one, in this case, the springs 51 are wound on the sliding rod 4 and do not contact with the sliding rod 4, so as to avoid the generation of the interaction force between the two.
Referring to fig. 2 and 3 again, in the device provided by the present invention, taking the elastic component 5 as the spring 51 as an example, the calculation process of the processor 7 for calculating the ash mass according to the resistance change value is as follows: from the above force analysis, it is known that the horizontal force F is generated by the ash 9 on the detection sheet 322(ii) a Assuming that the resistance change value of the potentiometer 6 is Δ R, the compression amount of the spring 51 (the displacement amount of the slide lever 4) is Δ x, and the gravity of the ash 9 is G, the detection piece 3 compresses the spring 51 so that the spring 51 generates an elastic force FBulletWherein the stiffness coefficients of the springs 51 are all k, and the number of the springs 51 is n (n is more than or equal to 1). As a horizontal component force F acting on the sensing plate 322With spring force F of spring 51BulletAfter reaching mutual equilibrium, i.e. when FBullet＝F22When the resistance value is larger than the resistance value delta R, the detection sheet 3 stops driving the sliding rod 4 and the electric brush 62 to move continuously, delta x reaches the maximum value, and the resistance change value delta R corresponding to delta x reaches the maximum valuemaxWhich is the basis for the processor 7 to calculate the slag discharge. Processor 7 obtains Δ RmaxThen, the distance Δ x of the movement of the brush 62 on the resistor 61 can be calculated based on this, and then the distance Δ x can be calculated according to hooke's law
FBullet＝n·k·Δx (1)
Can be calculated to obtain FBullet. As can be seen from the force analysis of the test piece 3 in figure 2,
F2＝F22/sinθ＝Fbullet/sinθ (2)
Furthermore, from the force analysis in fig. 2, it can be seen that:
G＝F2/cosθ (3)
the following equations 1, 2 and 3 can be obtained:
G＝n·k·Δx/sinθ·cosθ
therefore, the gravity G of the ash 9 can be obtained through corresponding calculation after the processor 7 obtains the resistance change value delta R of the potentiometer 6, and then the mass of the ash 9 can be obtained, so that the real-time accurate detection of the slag discharge amount of the coal gasifier 100 by the detection device is realized.
It should be noted that, since the slide rod 4 passes through the hopper wall and is connected with the potentiometer 6, the hopper wall can provide an upward supporting force for the slide rod 4 to balance the vertical component F of the acting force of the ash residue 9 vertical to the surface of the detection sheet 321To avoid vertical component F21The axial movement of the sliding rod 4 is blocked, so that the contact part of the sliding rod 4 and the slag hopper wall is smooth as much as possible, the friction force between the sliding rod 4 and the slag hopper wall is reduced, the detection error is reduced, and the detection accuracy is improved.
Further, the friction coefficient between the brush 61 and the resistor 62 of the potentiometer 6 is reduced as much as possible to reduce the friction force therebetween, thereby reducing the influence of the friction force therebetween on the detection result.
It should be noted that the real-time detection described in this embodiment can be regarded as a periodic detection of the slag discharge amount of the coal gasifier, but the detection period is relatively short, and one detection period is from the time when the ash falls onto the detection piece 3 to the time when the detection piece 3 is reset to the initial position. However, the dropping of the ash is a continuous process, so that the ash discharge amount detected in each cycle should be the ash mass corresponding to the maximum compression amount of the elastic member 5 in one detection cycle.
As another optimized design of this embodiment, as shown in fig. 1, the detection device further includes a display mechanism 8 connected to the processor 7, where the display mechanism 8 can display the calculation result of the slag discharge amount of the processor 7 in real time, so that the worker can visually see the real-time slag discharge amount of the coal gasifier 100, and then perform corresponding operations according to the slag discharge amount, for example, when the slag discharge amount of the coal gasifier 100 is continuously lower than a normal value within a continuous period of time, it can be considered that the coal gasifier 100 has an abnormal condition such as a blocked slag discharge pipe, and thus the worker can take intervention measures in time.
In addition, the processor 7 may also be connected to an alarm device, which gives an alarm to remind the operator when the slag discharge amount of the coal gasifier 100 is abnormal.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a device of real-time detection coal gasifier row's sediment volume which characterized in that includes:
the detection piece is arranged in a slag hopper of the coal gasification furnace, and the projection of a slag discharge pipe of the coal gasification furnace along the vertical direction can fall on the detection piece;
the sliding rod is connected with the detection sheet, penetrates through the slag hopper wall of the coal gasification furnace and can move axially;
the potentiometer is connected with the sliding rod;
the elastic component is connected between the detection sheet and the slag hopper wall of the coal gasifier;
and the processor is electrically connected with the potentiometer.
2. The apparatus of claim 1, wherein a center of a vertical projection of the slag discharge pipe of the coal gasifier coincides with a connection point of the detection piece and the sliding rod.
3. The apparatus of claim 1, wherein the detection plate has two symmetry axes perpendicular to each other, one of the symmetry axes is a horizontal symmetry axis, the intersection point of the sliding rod and the detection plate is the center point of the detection plate, the sliding rod is perpendicular to the horizontal symmetry axis, and the sliding rod is disposed along a horizontal direction.
4. The device for detecting the slag discharge amount of the coal gasifier in real time according to claim 1, wherein an angle formed by the detection piece and a horizontal plane ranges from 30 degrees to 60 degrees.
5. The device for detecting the slag discharge amount of the coal gasifier in real time according to claim 4, wherein the angle formed by the detection piece and the horizontal plane is 45 degrees.
6. The device for detecting the slag discharge amount of the coal gasifier in real time according to claim 3, wherein the elastic component is a spring,
the number of the springs is one, and the springs are wound outside the sliding rod; or,
the quantity of spring is at least two, wherein includes two the same springs of coefficient of stiffness and length at least, respectively symmetrical arrangement in the both sides of slide bar, with the slide bar is in same horizontal plane.
7. The device for detecting the slag discharge amount of the coal gasifier in real time according to claim 1, wherein the surface roughness range of the detection piece facing the slag discharge pipe is Ra ≤ 1.6 μm.
8. The device for detecting the slag discharge amount of the coal gasifier in real time according to any one of claims 1 to 7, wherein the potentiometer is a linear potentiometer.
9. The device for detecting the slag discharge amount of the coal gasifier in real time according to any one of claims 1 to 7, further comprising: and the display mechanism is connected with the processor and is used for displaying the calculation result of the processor on the slag discharge amount.
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| CN201820731075.0U CN208171397U (en) | 2018-05-16 | 2018-05-16 | A kind of device of real-time detection coal gasifier bed drain purge |
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| CN201820731075.0U CN208171397U (en) | 2018-05-16 | 2018-05-16 | A kind of device of real-time detection coal gasifier bed drain purge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790508A (en) * | 2020-06-09 | 2020-10-20 | 内蒙古岱海发电有限责任公司 | Coal mill slag discharge box slag amount monitoring and processing system and processing method thereof |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790508A (en) * | 2020-06-09 | 2020-10-20 | 内蒙古岱海发电有限责任公司 | Coal mill slag discharge box slag amount monitoring and processing system and processing method thereof |
| CN111790508B (en) * | 2020-06-09 | 2023-09-22 | 内蒙古岱海发电有限责任公司 | Slag quantity monitoring and processing system and method for slag discharge box of coal mill |
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