CN202157077U - Controlling and protecting device for filling puffing tank - Google Patents
Controlling and protecting device for filling puffing tank Download PDFInfo
- Publication number
- CN202157077U CN202157077U CN2011202642315U CN201120264231U CN202157077U CN 202157077 U CN202157077 U CN 202157077U CN 2011202642315 U CN2011202642315 U CN 2011202642315U CN 201120264231 U CN201120264231 U CN 201120264231U CN 202157077 U CN202157077 U CN 202157077U
- Authority
- CN
- China
- Prior art keywords
- valve
- coaling
- coal loading
- loading valve
- jar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a controlling and protecting device for filling a puffing tank. The controlling and protecting device is characterized by comprising a PLC (programmable logic controller) control cabinet, a pressure relief valve, an upper coal loading valve and a lower coal loading valve, wherein the pressure relief valve is connected with the top end of the puffing tank by a pipeline; the upper coal loading valve is connected with the bottom end of a pulverized coal bunker by a pipeline; the lower coal loading valve is connected with the upper coal loading valve and the top end of a coal spraying tank respectively by pipelines; and the pressure relief valve, the upper coal loading valve and the lower coal loading valve are controlled by the PLC (programmable logic controller) control cabinet. The opening signal of the pressure relief valve is interlocked with the opening signal of the lower coal loading valve by the device; only after the pressure relief valve is opened and the pressure in the puffing tank is lower than the insurance value, the lower coal loading valve and the upper coal loading valve can be sequentially opened, so as to avoid loading coals into the puffing tank when the pressure in the puffing tank is excessively high, thus avoiding blasting of the explosion-proof membrane of the pulverized coal bunker and other places.
Description
Technical field
The utility model relates to a kind of protector, relates in particular to canned jar of protector of a kind of winding-up.
Background technology
Blast furnace blowing jar breeze blowing system is all employing string jar and also two kinds of forms of jar at present; In actual use; Because existing tank pressure not let out the valve of just will coalingging opens; Cause Pulverized Coal Bin rupture disk and other local bursting accident to take place, influence the normal coal powder injection of blast furnace, and then cause the slow wind of blast furnace to raise with consuming.
The utility model content
The utility model technical problem to be solved provide a kind of have only when the pressure in the coal powder injection jar is lower than just open the device that the valve of coalingging is coaling when value of risk and pressure release valve are opened.
For solving the problems of the technologies described above; The technical scheme that the utility model is taked is: canned jar of control protector of a kind of winding-up; It is characterized in that said device comprise PLC housing, pressure release valve, on coaling valve and under the valve of coalingging; Said pressure release valve is through the top of pipe connection at the winding-up jar; The valve of coalingging on said through pipe connection in the bottom of Pulverized Coal Bin, said coaling down valve through pipeline respectively with said on the coaling top of valve and coal powder injection jar be connected, said pressure release valve, on coaling valve and under the valve of coalingging controlled by said PLC housing.
Adopt the beneficial effect that technique scheme produced to be: said device with the pressure release valve opening signal with under the valve opening signal of coalingging carry out chain; Have only after pressure release valve is opened and winding-up jar in pressure just open down successively when being lower than value of risk coaling valve and on the valve of coalingging; In winding-up jar, coaling when having avoided winding-up jar internal pressure too high, thereby cause the generation of Pulverized Coal Bin rupture disk and other local bursting accident.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the utility model structural representation;
Wherein: 1, coaling down threshold switch 2, on coaling threshold switch 3, pressure release valve switch 4, pressure release valve 5, on coaling valve 6, coaling valve 7, Pulverized Coal Bin 8, winding-up jars 9, PLC housing down.
Embodiment
As shown in Figure 1; Canned jar of control protector of a kind of winding-up; It is characterized in that said device comprise PLC housing 9, pressure release valve 4, on coaling valve 5 and under the valve 6 of coalingging; Said pressure release valve 4 is through the top of pipe connection at winding-up jar 8; Coaling on said valve 5 through pipe connection in the bottom of Pulverized Coal Bin 7, said coaling down valve 6 through pipeline respectively with said on the coaling top of valve 5 and coal powder injection jar 8 is connected, said pressure release valve 4, on coaling valve 5 and the valve 6 of time coalingging receive respectively on the PLC housing 9 pressure release valve switch 3, on coaling threshold switch 2 and under the threshold switch 1 of coalingging control.
At first set the tinning tank pressure value of risk of winding-up jar 8 by instrument; Pressure release valve switch 3 is got to out shelves, and PLC housing 9 is opened 4 pairs of winding-up jars 8 of pressure release valve and is carried out pressure release, when the pressure in the winding-up jar 8 is lower than value of risk; PLC housing 9 passes through analog output module; Send winding-up jar 8 pressure releases and finish and pressure release valve 4 opened signals, the corresponding relays action passes to the PLC load module through rly. with signal in the PLC housing 9; At last will on coaling threshold switch 2 and under the threshold switch 1 of coalingging get to out shelves, PLC housing 9 open down successively coaling valve 6 with on the valve 5 of coalingging.Said device only the pressure in winding-up jars 8 be lower than just open successively when value of risk and pressure release valve 4 are opened coaling down valve 6 with on coaling valve 5 (even if the pressure in the winding-up jars 8 is lower than value of risk when still pressure release valve 4 is not opened; Winding-up jar 8 interior pressure also can raise along with in winding-up jar 8, coalingging); In winding-up jars 8, coaling when having avoided winding-up jar 8 internal pressures too high, thereby cause the generation of Pulverized Coal Bin rupture disk and other local bursting accident.
Claims (1)
1. canned jar control protector of winding-up; It is characterized in that said device comprise PLC housing (9), pressure release valve (4), on coaling valve (5) and under the valve (6) of coalingging; Said pressure release valve (4) is through the top of pipe connection in winding-up jar (8); The valve (5) of coalingging on said is through the bottom of pipe connection in Pulverized Coal Bin (7); Said coaling down valve (6) through pipeline respectively with said on the coaling top of valve (5) and coal powder injection jar (8) be connected, said pressure release valve (4), on coaling valve (5) and under the valve (6) of coalingging controlled by said PLC housing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202642315U CN202157077U (en) | 2011-07-25 | 2011-07-25 | Controlling and protecting device for filling puffing tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202642315U CN202157077U (en) | 2011-07-25 | 2011-07-25 | Controlling and protecting device for filling puffing tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202157077U true CN202157077U (en) | 2012-03-07 |
Family
ID=45764719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202642315U Expired - Lifetime CN202157077U (en) | 2011-07-25 | 2011-07-25 | Controlling and protecting device for filling puffing tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202157077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600459A (en) * | 2016-01-04 | 2016-05-25 | 江苏凯弘新能源管理有限公司 | Explosion-proof and blowout-proof device of coal powder storage tank and powder feeding technological process |
-
2011
- 2011-07-25 CN CN2011202642315U patent/CN202157077U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600459A (en) * | 2016-01-04 | 2016-05-25 | 江苏凯弘新能源管理有限公司 | Explosion-proof and blowout-proof device of coal powder storage tank and powder feeding technological process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |