CN202131325U - Pressure detection system for preventing furnace body of blast furnace from being blocked by molten substances - Google Patents
Pressure detection system for preventing furnace body of blast furnace from being blocked by molten substances Download PDFInfo
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- CN202131325U CN202131325U CN201120229768U CN201120229768U CN202131325U CN 202131325 U CN202131325 U CN 202131325U CN 201120229768 U CN201120229768 U CN 201120229768U CN 201120229768 U CN201120229768 U CN 201120229768U CN 202131325 U CN202131325 U CN 202131325U
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- pressure
- blast furnace
- gas
- gas flow
- detecting system
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Abstract
The utility model relates to a pressure detection system for preventing a furnace body of a blast furnace from being blocked by molten substances, which comprises a pressure tapping and a gas flow sweeping device, wherein the gas flow sweeping device is connected with a gas path of the pressure tapping and gas flow is utilized for sweeping outwards through the pressure tapping. Preferably, the gas flow sweeping device comprises a gas source, a pressure regulating valve and a flowmeter, wherein the gas source is connected with the flowmeter through the gas path of the pressure regulating valve, the gas path of the flowmeter is connected with the pressure tapping, and the gas flow sweeping device is a nitrogen gas flow sweeping device. The pressure detection system for preventing the furnace body of the blast furnace from being blocked by the molten substances is ingenious in design and simple in structure, and can further prevent the furnace body of the blast furnace from being blocked by the molten substances, enable the measurement of the static pressure of the furnace body to have the long-term property, and can be suitable for large-scale popularization, and the maintenance cost is lowered.
Description
Technical field
The utility model relates to the detection system technical field, and particularly the pressure detecting system technical field specifically is meant the pressure detecting system that the anti-melt substance of a kind of blast furnace stack stops up.
Background technology
In blast furnace production process, understand the furnace pressure at blast furnace stack position, be an urgent demand of explained hereafter.Purpose be grasp from the air port to the shaft, up and down between the shaft and from shaft again to the crushing situation of furnace roof sealing cover; Again through conplane multiple spot shaft static pressure measurement, the grasp blast furnace has in operational process and does not have " off-centre " in addition.
Because the process characteristic of blast furnace, there is very big difficulty technically in measuring stress at the shaft position, is because " semi-melting " state of shaft position material.If on measuring technology, do not take corresponding technical measures; The material of semi-melting state will be with pressure taps " obstruction " in the pressure measurement process; The shaft pressure measurement is gone into operation at blast furnace just lose measurement function soon, will increase maintenance cost and dismantle to clean or change.
Therefore, for the problems referred to above and the defective that solves existence, a kind of blast furnace stack pressure detecting system that anti-melt substance stops up need be provided, thereby prevent that the blast furnace stack melt substance from stopping up, make the measurement of shaft static pressure have chronicity, reduce maintenance cost.
The utility model content
The purpose of the utility model is to have overcome above-mentioned shortcoming of the prior art; A kind of blast furnace stack pressure detecting system that anti-melt substance stops up is provided, and the pressure detecting system design that the anti-melt substance of this blast furnace stack stops up is ingenious, simple for structure; Thereby prevent that the blast furnace stack melt substance from stopping up; Make the measurement of shaft static pressure have chronicity, reduce maintenance cost, be suitable for large-scale promotion application.
To achieve these goals; The pressure detecting system that the anti-melt substance of the blast furnace stack of the utility model stops up; Comprise pressure tappings; Be characterized in that the pressure detecting system that the anti-melt substance of described blast furnace stack stops up also comprises the gas flow purging device, said gas flow purging device is connected with said pressure tappings gas circuit and utilizes air-flow outwards to purge through said pressure tappings.
Preferably, said gas flow purging device comprises source of the gas, pressure regulator valve and under meter, and said source of the gas connects said under meter through said pressure regulator valve gas circuit, and said under meter gas circuit connects said pressure tappings.
More preferably, said gas flow purging device also comprises the purging mouth, and said under meter gas circuit connects said purging mouth, and said purging mouth is arranged in the said pressure tappings.
More preferably, said gas flow purging device also comprises reverse checkvalve, and said under meter connects said pressure tappings through said reverse checkvalve gas circuit.
More preferably, said gas flow purging device also comprises pressure measurement unit, and said pressure measurement unit gas circuit is connected in the gas circuit between said under meter and the said pressure tappings.
Further, said pressure measurement unit is a pressure unit.
More preferably, said gas flow purging device also comprises air circuit breaker, and said source of the gas connects said pressure regulator valve through said air circuit breaker gas circuit.
Further, said air circuit breaker is a ball valve.
Preferably, said gas flow purging device is the stream of nitrogen gas blow device.
The beneficial effect of the utility model specifically is:
1, the pressure detecting system of the anti-melt substance obstruction of the blast furnace stack of the utility model comprises pressure tappings (being gauge hatch) and air-flow blow device, and said gas flow purging device is connected with said pressure tappings gas circuit and utilizes air-flow outwards to purge through said pressure tappings, thereby utilizes air communication to cross pressure tappings " purging " in stove; Because the existence of blowback air-flow; Molten materials can not be assembled at pressure tappings, design ingenious, simple for structure; Thereby prevent that the blast furnace stack melt substance from stopping up; Make the measurement of shaft static pressure have chronicity, reduce maintenance cost, be suitable for large-scale promotion application.
2, the gas flow purging device of the utility model comprises source of the gas, pressure regulator valve and under meter; Said source of the gas connects said under meter through said pressure regulator valve gas circuit, and said under meter gas circuit connects said pressure tappings, thereby guaranteeing that gas can be stablized is blown into shaft; Prevent that the blast furnace stack melt substance from stopping up; Make the measurement of shaft static pressure have chronicity, reduce maintenance cost, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the utility model when using.
Fig. 2 is the measuring principle synoptic diagram of the utility model.
Embodiment
In order more to be expressly understood the technology contents of the utility model, the special following examples of lifting specify.Should be understood that embodiment is used to explain the utility model, rather than to the restriction of the utility model.
See also shown in Figure 1; The pressure detecting system that the anti-melt substance of the blast furnace stack of the utility model stops up comprises pressure tappings 1 and air-flow blow device 2, and said gas flow purging device 2 is connected with said pressure tappings 1 gas circuit and utilizes air-flow outwards to purge through said pressure tappings 1.
Said gas flow purging device 2 can have any suitable structure; Preferably; Said gas flow purging device 2 comprises source of the gas (not shown), pressure regulator valve 21 and under meter 22; Said source of the gas connects said under meter 22 through said pressure regulator valve 21 gas circuits, and said under meter 22 gas circuits connect said pressure tappings 1.Under meter 22 for example can be a constant-current flow gauge, adopts constant-current flow gauge to regulate flow in purge gas flow and the stove, makes the two reach balance.
In order to be different from pressure tappings 1 and to prevent that material gets into pressure tappings 1 in the stove; In the specific embodiment of the utility model; Said gas flow purging device also comprises purging mouthful (not shown) and reverse checkvalve 23; Said under meter 22 connects said purging mouth through said reverse checkvalve 23 gas circuits, and said purging mouth is arranged in the said pressure tappings 1.
In order in time to grasp gas flow loop pressure, more preferably, said gas flow purging device 2 also comprises pressure measurement unit 24, and said pressure measurement unit 24 gas circuits are connected in the gas circuit between said under meter 22 and the said pressure tappings 1.In the specific embodiment of the utility model, said pressure measurement unit 24 is pressure units, and gas circuit is connected in said reverse checkvalve 23 and the said gas circuit that purges between the mouth.
In order to open and cut off gas delivery better, more preferably, said gas flow purging device also comprises air circuit breaker 25, and said source of the gas connects said pressure regulator valve 21 through said air circuit breaker 25 gas circuits.In the specific embodiment of the utility model, said air circuit breaker 25 is ball valves.
Said gas flow purging device 2 can adopt any suitable source of the gas.In the specific embodiment of the utility model, said gas flow purging device 2 is stream of nitrogen gas blow devices, promptly adopts source nitrogen.
The measuring principle of the utility model is as shown in Figure 2, wherein P1=P2-(Q/A)
2=P2-C, the high furnace pressure of P1=, P2=measures the nitrogen circuit pressure with pressure unit, Q=constant sweep gas flow, the A=cross-section of pipeline is long-pending, the pressure reduction between high furnace pressure of C=and the nitrogen circuit pressure.
In the middle of actual the use; The quantity of the corresponding pressure tappings 1 of quantity that purges mouthful sees also shown in Figure 1ly, and shaft static pressure equipment is that 4 pressure tappings 1 that directly lead in the stove are circumferentially evenly opened in the three layers of position in bosh, restoration of lower stack, shaft top at blast furnace; Therefore; Correspondingly, be provided with 4 and purge mouth, each purges mouth and connects with corresponding pressure tappings 1 gas circuit respectively.In addition, owing to have a plurality of purgings mouths, therefore be provided with for example ball valve of total air circuit breaker 26, and pressure survey switch 27 for example ball valve and tensimeter 28 are set, to measure intake pressure in the source of the gas downstream.
During use, at first open total air circuit breaker 26, open admission passage, open pressure survey switch 27 and check the pipeline nitrogen pressure through tensimeter 28.Open each pressure regulator valve 25 then respectively, open gas circuit.Through regulating each pressure regulator valve 21, be transferred to 2/3 place of under meter 22 full ranges to the blowback nitrogen flow, guarantee that gas can be stablized to be blown into shaft.Thereby in the normal production process of blast furnace, purge pressure tappings 1 continuously with nitrogen, so that pressure tappings 1 is unlikely by dust in the stove or furnace charge and the obstruction of slag iron melts.
The air blowing type shaft static pressure measurement device that adopts the utility model is the pressure detecting system that the anti-melt substance of blast furnace stack stops up, and has solved the stifled problem in measuring tube Louis, makes static pressure measurement become convenient continuous again, and maintenance reduces greatly.
To sum up, the pressure detecting system design of the anti-melt substance obstruction of the blast furnace stack of the utility model is ingenious, simple for structure; Thereby prevent that the blast furnace stack melt substance from stopping up; Make the measurement of shaft static pressure have chronicity, reduce maintenance cost, be suitable for large-scale promotion application.
In this specification sheets, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and the scope of the utility model.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. a blast furnace stack is prevented the pressure detecting system that melt substance stops up; Comprise pressure tappings; It is characterized in that; The pressure detecting system that the anti-melt substance of described blast furnace stack stops up also comprises the gas flow purging device, and said gas flow purging device is connected with said pressure tappings gas circuit and utilizes air-flow outwards to purge through said pressure tappings.
2. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 1 stops up; It is characterized in that; Said gas flow purging device comprises source nitrogen, pressure regulator valve and under meter; Said source nitrogen connects said under meter through said pressure regulator valve gas circuit, and said under meter gas circuit connects said pressure tappings.
3. blast furnace stack according to claim 2 is prevented the pressure detecting system of melt substance obstruction, it is characterized in that, said gas flow purging device also comprises the purging mouth, and said under meter gas circuit connects said purging mouth, and said purging mouth is arranged in the said pressure tappings.
4. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 2 stops up is characterized in that said gas flow purging device also comprises reverse checkvalve, and said under meter connects said pressure tappings through said reverse checkvalve gas circuit.
5. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 2 stops up; It is characterized in that; Said gas flow purging device also comprises pressure measurement unit, and said pressure measurement unit gas circuit is connected in the gas circuit between said under meter and the said pressure tappings.
6. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 5 stops up is characterized in that said pressure measurement unit is a pressure unit.
7. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 2 stops up is characterized in that said gas flow purging device also comprises air circuit breaker, and said source nitrogen connects said pressure regulator valve through said air circuit breaker gas circuit.
8. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 7 stops up is characterized in that said air circuit breaker is a ball valve.
9. the pressure detecting system that the anti-melt substance of blast furnace stack according to claim 1 stops up is characterized in that said gas flow purging device is the stream of nitrogen gas blow device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120229768U CN202131325U (en) | 2011-06-30 | 2011-06-30 | Pressure detection system for preventing furnace body of blast furnace from being blocked by molten substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120229768U CN202131325U (en) | 2011-06-30 | 2011-06-30 | Pressure detection system for preventing furnace body of blast furnace from being blocked by molten substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202131325U true CN202131325U (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120229768U Expired - Lifetime CN202131325U (en) | 2011-06-30 | 2011-06-30 | Pressure detection system for preventing furnace body of blast furnace from being blocked by molten substances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202131325U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032055A (en) * | 2014-05-28 | 2014-09-10 | 中国一冶集团有限公司 | Static pressure measurement anti-blocking device and method of blast furnace shaft |
| CN110081729A (en) * | 2019-05-22 | 2019-08-02 | 国核维科锆铪有限公司 | A kind of toxic reaction distillation furnace body pressure-detecting device of high temperature and its application method |
-
2011
- 2011-06-30 CN CN201120229768U patent/CN202131325U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032055A (en) * | 2014-05-28 | 2014-09-10 | 中国一冶集团有限公司 | Static pressure measurement anti-blocking device and method of blast furnace shaft |
| CN104032055B (en) * | 2014-05-28 | 2016-12-07 | 中国一冶集团有限公司 | Blast-furnace shaft static pressure measurement anti-block apparatus and method |
| CN110081729A (en) * | 2019-05-22 | 2019-08-02 | 国核维科锆铪有限公司 | A kind of toxic reaction distillation furnace body pressure-detecting device of high temperature and its application method |
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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: 20120201 |