CN110230716B - Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device - Google Patents
Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device Download PDFInfo
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- CN110230716B CN110230716B CN201910447550.0A CN201910447550A CN110230716B CN 110230716 B CN110230716 B CN 110230716B CN 201910447550 A CN201910447550 A CN 201910447550A CN 110230716 B CN110230716 B CN 110230716B
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- Prior art keywords
- explosion
- plug
- supporting block
- proof device
- furnace smoke
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- 239000000779 smoke Substances 0.000 title claims abstract description 36
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 238000007664 blowing Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000003550 marker Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000004880 explosion Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Details (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a furnace smoke doping anti-explosion device of a direct blowing type steel ball coal mill and a working method thereof, wherein the device comprises a furnace smoke pipeline, an anti-explosion device and a fixed cover; the wall of the furnace smoke pipeline is connected with the explosion-proof device through the bolt hole, the flange and the bolt, a sealing gasket is arranged between the flange and the outer wall of the furnace smoke pipeline, the top end of the explosion-proof device is in threaded connection with the fixed cover, the supporting block is welded inside the explosion-proof device, the sealing ring is arranged on the inner side of the supporting block, the supporting block is penetrated with the plug, the lower end of the plug is positioned in the connecting groove of the upper end face of the limiting head, the upper end of the plug is provided with the marker post, the marker post penetrates through the fixed cover, the marker post is sleeved with the compression spring, the side wall of the explosion-proof device is provided with the air release hole, and the upper end face of the limiting head is welded with the supporting head. The furnace smoke mixing explosion-proof device of the direct-blowing steel ball coal mill can be used for relieving pressure in equipment when the amount of added furnace smoke is too large, preventing the pressure in the equipment from being too large and being beneficial to the stable operation of the equipment.
Description
Technical Field
The invention relates to the technical field of power station equipment, in particular to a furnace smoke doping explosion-proof device of a direct-blowing steel ball coal mill and a working method thereof.
Background
The steel ball coal mill is main equipment of coal powder preparation system of thermal power station, and is widely used for smashing the coal of various hardness, for example, chinese patent application number 201510197911.2, and in the in-process that thermal power station used, all adopted is hot air, and easy explosion, consequently, the adoption is adopted at present to mix the flue gas in hot air to prevent explosion, but in the in-process of carrying stove cigarette, can make stove flue pipe internal pressure too high, easily cause the influence to equipment, influence the normal operating of other equipment, consequently, need set up an explosion-proof equipment on stove flue pipe.
Disclosure of Invention
The invention aims to provide a furnace smoke doping and explosion-proof device of a direct-blowing steel ball coal mill and a working method thereof, which are used for solving the problem that the internal pressure of a furnace smoke pipeline is possibly too high in the process of conveying furnace smoke to influence the normal operation of other equipment in the conventional furnace smoke doping and explosion-proof device of the direct-blowing steel ball coal mill.
The invention solves the problems by adopting the following technical scheme: a smoke explosion-proof device of a direct-blowing steel ball coal mill comprises a smoke pipeline, an explosion-proof device and a fixed cover; the anti-explosion device is characterized in that the wall of the furnace smoke pipeline is connected with the anti-explosion device through bolt holes, a flange and bolts, a sealing gasket is arranged between the flange and the outer wall of the furnace smoke pipeline, the top end of the anti-explosion device is in threaded connection with the fixed cover, a supporting block is welded inside the anti-explosion device, a sealing ring is arranged on the inner side of the supporting block, a plug penetrates through the supporting block, the lower end of the plug is positioned in a connecting groove of the upper end face of the limiting head, a marker post is arranged at the upper end of the plug, the marker post penetrates through the fixed cover, a compression spring is sleeved on the marker post, a deflation hole is formed in the side wall of the anti-explosion device, and a supporting head is welded on the upper end face of the limiting head.
Further, the air vent penetrates through the side wall of the explosion-proof device, the air vent is located below the fixed cover, and a plurality of air vents are formed.
Further, the supporting block is of a circular ring structure, and the axis of the supporting block is coincident with the axis of the plug.
Further, the plug is of a truncated cone-shaped structure, the diameter of the lower end of the plug is smaller than that of the upper end of the plug, and the maximum diameter of the plug is larger than that of the inner hole of the supporting block.
Further, the upper end of the limiting head is equidistantly provided with a plurality of supporting heads, and the limiting heads and the lower end faces of the supporting blocks are arranged in parallel.
Furthermore, the lower end of the marker post is welded with the plug, and the marker post is positioned at the middle part of the upper end of the plug.
The working method of the furnace smoke doping explosion-proof device of the direct-blowing steel ball coal mill is characterized by comprising the following steps of: when the air pressure in the smoke pipeline of the furnace is too high, the air pressure jack up the plug upwards through the limit head, so that the plug compresses the compression spring and drives the marker post to move upwards in the through hole on the fixed cover, when the plug is separated from the sealing ring on the inner side of the supporting block, air flows out through the gap between the plug and the supporting block and is discharged through the air discharge hole on the side wall of the explosion-proof device, and then the pressure relief treatment is carried out in the equipment, so that the air pressure in the equipment is reduced; after the air pressure in the flue of the furnace is reduced, the compression spring pushes the plug to the supporting block, so that the plug is tightly propped against the sealing ring on the inner side of the supporting block, the opening of the supporting block can be sealed, the supporting head on the supporting block can enable a certain gap to be reserved between the lower end face of the supporting block and the limiting head, the air can flow out conveniently, and a user can judge the reset condition of the plug through the scale marks on the marker post.
Compared with the prior art, the invention has the following advantages and effects: according to the furnace smoke doping explosion-proof device of the direct-blowing steel ball coal mill, when the amount of added furnace smoke is too large, the pressure in the equipment can be relieved, the pressure in the equipment is prevented from being too large, and the stable operation of the equipment is facilitated; the explosion-proof device is characterized in that the side wall of the explosion-proof device is provided with the air vent, the air vent is positioned below the fixed cover, so that the air vent plays a role in exhausting air pressure, the air pressure can be exhausted along the side wall of the flue gas pipeline, the supporting block and the plug are arranged in the explosion-proof device, the effect that the plug seals the inner hole of the supporting block through the sealing ring is achieved, the marker post is arranged above the plug, the marker post penetrates through the fixed cover, the user can observe the scale condition on the marker post, and then the contact condition between the plug and the sealing ring on the inner side of the supporting block is judged.
Drawings
FIG. 1 is a schematic view of the internal structure of an explosion-proof device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a plug and support block structure according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a bleed hole according to an embodiment of the present invention;
fig. 4 is a schematic bottom view of an explosion-proof apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a spacing head according to an embodiment of the present invention;
fig. 6 is a schematic view of an installation structure of an explosion-proof device according to an embodiment of the present invention.
In the figure: 1. a flue gas duct; 2. an explosion-proof device; 3. a fixed cover; 4. a bleed hole; 5. bolt holes; 6. a flange; 7. a bolt; 8. a support block; 9. a seal ring; 10. a plug; 11. a positioning head; 12. a compression spring; 13. a target; 14. a sealing gasket; 15. a connecting groove; 16. and a support head.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Referring to fig. 1-6, the explosion-proof device for smoke doped in the direct blowing type steel ball coal mill in this embodiment includes a smoke pipe 1, an explosion-proof device 2, a fixed cover 3, a vent hole 4, a bolt hole 5, a flange 6, a bolt 7, a supporting block 8, a sealing ring 9, a plug 10, a positioning head 11, a compression spring 12, a marker post 13, a sealing pad 14, a connecting groove 15 and a supporting head 16.
The wall of the fire smoke pipeline 1 is connected with the explosion-proof device 2 through the bolt holes 5, the flange 6 and the bolts 7, a sealing gasket 14 is arranged between the flange 6 and the outer wall of the fire smoke pipeline 1, the top end of the explosion-proof device 2 is in threaded connection with the fixed cover 3, a supporting block 8 is welded inside the explosion-proof device 2, a sealing ring 9 is arranged on the inner side of the supporting block 8, a plug 10 penetrates through the supporting block 8, the lower end of the plug 10 is positioned in a connecting groove 15 on the upper end face of the limiting head 11, a marker post 13 is arranged at the upper end of the plug 10, the marker post 13 penetrates through the fixed cover 3, a compression spring 12 is sleeved on the marker post 13, a vent hole 4 is formed in the side wall of the explosion-proof device 2, and a supporting head 16 is welded on the upper end face of the limiting head 11.
In this embodiment, the vent hole 4 penetrates the side wall of the explosion-proof device 2, and the vent hole 4 is located below the fixed cover 3, and the vent hole 4 is provided in plurality, so that the vent hole 4 plays a role in exhausting the air pressure.
The supporting block 8 is of a circular ring structure, and the axis of the supporting block 8 coincides with the axis of the plug 10, so that the matched installation between the plug 10 and the supporting block 8 is facilitated.
The plug 10 is of a round table-shaped structure, the diameter of the lower end of the plug 10 is smaller than that of the upper end of the plug, and the maximum diameter of the plug 10 is larger than that of the inner hole of the supporting block 8, so that the plug 10 is prevented from penetrating through the supporting block 8, and sealing of the plug 10 to the inner hole of the supporting block 8 is facilitated.
The upper end equidistance of spacing head 11 has a plurality of supporting head 16, and spacing head 11 and the lower terminal surface of supporting shoe 8 are parallel arrangement each other, set up like this and play to avoid the jam of spacing head 11 to the last through-hole of supporting shoe 8, be favorable to gaseous normal discharge.
The lower extreme and the end cap 10 welded connection of the marker post 13, and the marker post 13 is located the middle part of end cap 10 upper end, sets up like this and plays the reset condition that the user judges end cap 10 through the scale mark on the marker post 13, avoids end cap 10 not to produce gas leakage to the sealing washer 9 top of supporting shoe 8 inboard tightly.
Working principle: when the direct blowing type steel ball coal mill furnace smoke mixing explosion-proof device is used, as shown in fig. 1-6, when the air pressure in the furnace smoke pipeline 1 is too high, the air pressure jacks up the plug 10 through the limiting head 11, so that the plug 10 compresses the compression spring 12 and drives the marker post 13 to move upwards in the through hole on the fixed cover 3, after the plug 10 is separated from the sealing ring 9 on the inner side of the supporting block 8, air flows out through a gap between the plug 10 and the supporting block 8 and is discharged from the air discharge hole 4 on the side wall of the explosion-proof device 2, and then the pressure relief treatment is carried out on the inside of the equipment, so that the air pressure in the equipment is reduced; after the air pressure in the flue gas pipeline 1 is reduced, the compression spring 12 pushes the plug 10 to the supporting block 8, so that the plug 10 is tightly propped against the sealing ring 9 on the inner side of the supporting block 8, and the opening of the supporting block 8 can be sealed, as shown in fig. 1, 2 and 5, a certain gap is reserved between the lower end surface of the supporting block 8 and the limiting head 11 by the supporting head 16 on the limiting head 11, so that the air can flow out conveniently, a user can judge the reset condition of the plug 10 through the scale mark on the marker post 13, and a series of operations of the flue gas explosion-proof device of the direct blowing type steel ball coal mill can be completed.
Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (5)
1. A smoke-doped explosion-proof device of a direct-blowing steel ball coal mill comprises a smoke pipeline (1), an explosion-proof device (2) and a fixed cover (3); the anti-explosion device is characterized in that the wall of the furnace smoke pipeline (1) is connected with the anti-explosion device (2) through a bolt hole (5), a flange (6) and a bolt (7), a sealing gasket (14) is arranged between the flange (6) and the outer wall of the furnace smoke pipeline (1), the top end of the anti-explosion device (2) is in threaded connection with the fixed cover (3), a supporting block (8) is welded inside the anti-explosion device (2), a sealing ring (9) is arranged on the inner side of the supporting block (8), a plug (10) penetrates through the supporting block (8), the lower end of the plug (10) is positioned in a connecting groove (15) on the upper end face of the limiting head (11), the upper end of the plug (10) is provided with a marker post (13), the marker post (13) penetrates through the fixed cover (3), a compression spring (12) is sleeved on the marker post (13), a deflation hole (4) is formed in the side wall of the anti-explosion device (2), and a supporting head (16) is welded on the upper end face of the limiting head (11). The air release holes (4) penetrate through the side wall of the explosion-proof device (2), the air release holes (4) are positioned below the fixed cover (3), and a plurality of air release holes (4) are formed; the supporting block (8) is of a circular ring structure, and the axis of the supporting block (8) is coincident with the axis of the plug (10).
2. The furnace smoke doping explosion-proof device of the direct blowing type steel ball coal mill according to claim 1, wherein the plug (10) is of a truncated cone-shaped structure, the diameter of the lower end of the plug (10) is smaller than that of the upper end of the plug, and the maximum diameter of the plug (10) is larger than that of an inner hole of the supporting block (8).
3. The furnace smoke mixing explosion-proof device of the direct-blowing type steel ball coal mill according to claim 1, wherein a plurality of supporting heads (16) are arranged at the upper end of the limiting head (11) at equal intervals, and the limiting head (11) and the lower end face of the supporting block (8) are arranged in parallel.
4. The furnace smoke mixing explosion-proof device of the direct-blowing steel ball coal mill according to claim 1, wherein the lower end of the marker post (13) is welded with the plug (10), and the marker post (13) is positioned in the middle of the upper end of the plug (10).
5. A working method of a furnace smoke mixing explosion-proof device of a direct-blowing steel ball coal mill according to any one of claims 1-4, which is characterized by comprising the following steps: when the air pressure in the smoke pipeline (1) is too high, the air pressure jacks up the plug (10) through the limiting head (11), so that the plug (10) compresses the compression spring (12) and drives the marker post (13) to move upwards in the through hole on the fixed cover (3), and when the plug (10) is separated from the sealing ring (9) on the inner side of the supporting block (8), air flows out from the gap between the plug (10) and the supporting block (8) and is discharged from the air discharge hole (4) on the side wall of the explosion-proof device (2), so that the pressure in the equipment is relieved, and the air pressure in the equipment is reduced; after the air pressure in the furnace smoke pipeline (1) is reduced, the compression spring (12) pushes the plug (10) to the supporting block (8), so that the plug (10) is tightly propped against the sealing ring (9) on the inner side of the supporting block (8), the opening of the supporting block (8) is sealed, a gap is reserved between the lower end face of the supporting block (8) and the limiting head (11) by the supporting head (16) on the limiting head (11), and the air can conveniently flow out, and a user can judge the resetting condition of the plug (10) through the scale mark on the marker post (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447550.0A CN110230716B (en) | 2019-05-27 | 2019-05-27 | Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447550.0A CN110230716B (en) | 2019-05-27 | 2019-05-27 | Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device |
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| Publication Number | Publication Date |
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| CN110230716A CN110230716A (en) | 2019-09-13 |
| CN110230716B true CN110230716B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910447550.0A Active CN110230716B (en) | 2019-05-27 | 2019-05-27 | Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device |
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Families Citing this family (1)
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| CN111503429B (en) * | 2020-04-07 | 2024-04-12 | 天津太合节能科技有限公司 | Pipe plug and system of direct-buried heat-insulating pipeline and end face sealing method of direct-buried heat-insulating pipeline |
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| CN110230716A (en) | 2019-09-13 |
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