CN204941953U - A kind of gas leakage preventing system of gas fan - Google Patents
A kind of gas leakage preventing system of gas fan Download PDFInfo
- Publication number
- CN204941953U CN204941953U CN201520648698.8U CN201520648698U CN204941953U CN 204941953 U CN204941953 U CN 204941953U CN 201520648698 U CN201520648698 U CN 201520648698U CN 204941953 U CN204941953 U CN 204941953U
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- CN
- China
- Prior art keywords
- nitrogen
- gas
- delivery pipe
- housing
- leakage preventing
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- 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 - Fee Related
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Abstract
The utility model discloses a kind of gas leakage preventing system of gas fan, comprise the housing for cavity between coated fan sealing device and fuel tank, one end of nitrogen delivery pipe is connected with housing, and the other end of nitrogen delivery pipe is connected with Nitrogen source gases; Nitrogen delivery pipe is provided with Safety valve.Above fuel tank exhaust port, drainage hood is installed.Nitrogen delivery pipe is provided with decompressor and pressure gauge.The utility model is by coated for cavity housing between fan sealing device and fuel tank, and nitrogen is filled with in housing, by regulating nitrogen pressure, make nitrogen pressure higher than blower interior coal gas air pressure, while the personnel's intoxication accident caused preventing gas leakage, it also avoid and change Sealing continually, save operating time and cost of production.
Description
Technical field
The utility model belongs to technical field of metallurgical production, relates to a kind of gas leakage preventing system of gas fan.
Background technique
At present, iron and steel enterprise adopts skeleton rubber seal for the seal arrangement of the Roots blower carrying coal gas, because its coal gas carried all contains a certain amount of dust, dust in fan operation process in coal gas can enter the junction plane of rubber seal and shaft sleeve of fan, dust meeting abradable seal part during blower fan long-play, cause gas leakage, easily cause personnel poisoning.In addition; due to the complex structure of roots blower; often change once sealing part; after need shutting down, purging displacement is carried out to the coal gas in blower fan and in import and export pipeline; carry out again uncapping, dismantling the parts such as impeller, bearing; workload very large (generally needing 5 ~ 7 days), also brings certain impact to production.
Model utility content
The purpose of this utility model is the gas leakage preventing system providing a kind of gas fan, the problem that when dust abradable seal part can cause accident to leak the coal gas and change Sealing when solving fan operation, workload is large.
The technological scheme that the utility model lock adopts is, a kind of gas leakage preventing system of gas fan, comprise the housing for cavity between coated fan sealing device and fuel tank, one end of nitrogen delivery pipe is connected with housing, and the other end of nitrogen delivery pipe is connected with Nitrogen source gases; Nitrogen delivery pipe is provided with Safety valve.
Feature of the present utility model is also,
Above fuel tank exhaust port, drainage hood is installed.
Nitrogen delivery pipe is connected with housing by double thread screw pipe joint.
Nitrogen delivery pipe is provided with decompressor and pressure gauge.
Pressure gauge is capsule pressure gauge.
In housing, the pressure of nitrogen is higher than the pressure of blower interior coal gas, and its difference is 2 ~ 5KPa.
The beneficial effects of the utility model are, by coated for cavity housing between fan sealing device and fuel tank, and nitrogen is filled with in housing, by regulating nitrogen pressure, make nitrogen pressure higher than blower interior coal gas air pressure, while the personnel's intoxication accident caused preventing gas leakage, it also avoid and change Sealing continually, save operating time and cost of production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the gas leakage preventing system of a kind of gas fan of the utility model.
In figure, 1. seal arrangement, 2. fuel tank, 3. cavity, 4. housing, 5. nitrogen delivery pipe, 6. Nitrogen source gases, 7. Safety valve, 8. decompressor, 9. pressure gauge, 10. drainage hood.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The structural representation of the gas leakage preventing system of a kind of gas fan of the utility model as shown in Figure 1, comprise the housing 4 for cavity 3 between coated fan sealing device 1 and fuel tank 2, one end of nitrogen delivery pipe 5 is arranged on the top of housing 4 by double thread screw pipe joint, the other end of nitrogen delivery pipe 5 is connected with Nitrogen source gases 6; Nitrogen delivery pipe 5 is provided with Safety valve 7, decompressor 8 and pressure gauge 9.Wherein, pressure gauge 9 is capsule pressure gauge; In housing 1, the pressure of nitrogen is higher than the pressure of blower interior coal gas, and its difference is 2 ~ 5KPa; Above fuel tank 2 exhaust port, drainage hood 10 is installed.
The four portion cavity case top of the utility model between the coal gas seal arrangement and fuel tank at roots blower two ends respectively process a through hole, internal thread is processed on top, hole, each installation double end male connector on tapped hole, female adapter and rapid pipe joint are installed in 4 sockets, and at 4 quick couplings, 1 nitrogen delivery pipe is respectively installed, 4 nitrogen delivery pipes are connected with outside Nitrogen source gases, and on nitrogen delivery pipe mounted valve, decompressor and capsule pressure gauge; If when finding that in fan operation process seal arrangement causes gas leakage because wearing and tearing, opening nitrogen valve, regulating decompressor to make nitrogen pressure 2 ~ 5kPa higher than blower interior gas pressure, effectively can stop gas leakage under draught head effect.On the fuel tank cap exhaust port top of two ends top of oil-tank, a set of nitrogen drainage hood is installed, respectively connects on drainage hood top and draw a drainage tube, a small amount of nitrogen entering fuel tank is drained to the outside high vacancy of factory building, prevents personnel from suffocating.
Claims (6)
1. the gas leakage preventing system of a gas fan, it is characterized in that, comprise the housing (4) for cavity (3) between coated fan sealing device (1) and fuel tank (2), one end of nitrogen delivery pipe (5) is connected with housing (4), and the other end of nitrogen delivery pipe (5) is connected with Nitrogen source gases (6); Nitrogen delivery pipe (5) is provided with Safety valve (7).
2. the gas leakage preventing system of a kind of gas fan according to claim 1, is characterized in that, is provided with drainage hood (10) above fuel tank (2) exhaust port.
3. the gas leakage preventing system of a kind of gas fan according to claim 1, is characterized in that, nitrogen delivery pipe (5) is connected with housing (4) by double thread screw pipe joint.
4. the gas leakage preventing system of a kind of gas fan according to claim 3, is characterized in that, nitrogen delivery pipe (5) is provided with decompressor (8) and pressure gauge (9).
5. the gas leakage preventing system of a kind of gas fan according to claim 4, is characterized in that, pressure gauge (9) is capsule pressure gauge.
6. the gas leakage preventing system of a kind of gas fan according to claim 1, is characterized in that, the pressure of housing (4) interior nitrogen is higher than the pressure of blower interior coal gas, and its difference is 2 ~ 5KPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648698.8U CN204941953U (en) | 2015-08-26 | 2015-08-26 | A kind of gas leakage preventing system of gas fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648698.8U CN204941953U (en) | 2015-08-26 | 2015-08-26 | A kind of gas leakage preventing system of gas fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941953U true CN204941953U (en) | 2016-01-06 |
Family
ID=55009391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520648698.8U Expired - Fee Related CN204941953U (en) | 2015-08-26 | 2015-08-26 | A kind of gas leakage preventing system of gas fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792629A (en) * | 2019-11-06 | 2020-02-14 | 中冶宝钢技术服务有限公司 | Sealing device and method for fan |
-
2015
- 2015-08-26 CN CN201520648698.8U patent/CN204941953U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792629A (en) * | 2019-11-06 | 2020-02-14 | 中冶宝钢技术服务有限公司 | Sealing device and method for fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |