CN104863888A - Pressure limiting water seal device of low pressure centrifugal fan - Google Patents
Pressure limiting water seal device of low pressure centrifugal fan Download PDFInfo
- Publication number
- CN104863888A CN104863888A CN201510291555.0A CN201510291555A CN104863888A CN 104863888 A CN104863888 A CN 104863888A CN 201510291555 A CN201510291555 A CN 201510291555A CN 104863888 A CN104863888 A CN 104863888A
- Authority
- CN
- China
- Prior art keywords
- pressure
- water seal
- low pressure
- sealed tank
- tank
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
Abstract
Provided is a pressure limiting water seal device of a low pressure centrifugal fan. The pressure limiting water seal device of the low pressure centrifugal fan is characterized in that an air inlet of a whirlwind dehydrator is communicated with a U-type water seal tank exhaust pipe on the upper portion of a normal pressure tank body of a U-type water seal tank; the upper portion of the normal pressure tank body of the U-type water seal tank is communicated with an air supply main pipeline through an air inlet pipeline; the U-type water seal tank is provided with a water level indicator used for measuring water level inside the normal pressure tank body of the U-type water seal tank; the U-type water seal tank is filled with liquid of set height; safe dispersion pressure of gas of an outlet of the low pressure centrifugal fan is controlled by setting the height difference of the water level to achieve on-off of gas; a water replenishing valve is installed on the upper portion of the normal pressure tank body of the U-type water seal tank, and a drain valve is installed at the bottom; a drain pipe of the whirlwind dehydrator is communicated with the bottom of the U-type water seal tank. The pressure limiting water seal device of the low pressure centrifugal fan has the advantages that safe pressure of gas of a gas supply main pipeline is controlled accurately, response is sensitive, a draught fan operates stably, the structure is simple, and the maintenance expenses are low. The pressure limiting water seal device of the low pressure centrifugal fan can be mainly applied to safe pressure control for operation of the low pressure centrifugal fan.
Description
Technical field
A kind of height of water level that utilizes that the present invention relates to use in low pressure centrifugal blower fan technical field is to control the pressure limiting water seal arrangement of low pressure centrifugal blower fan exhaust pressure.
Background technique
There is fluctuation of load in existing low pressure centrifugal blower fan, for preventing pressure from exceeding its safe design pressure, adopt installs air intake adjustment doors at suction port more, or installs vent valve at exhaust duct, has the following disadvantages in operation process:
1, Stress control effect is undesirable.Air inlet adjustment door or vent valve have hysteresis quality in operation, can have that pressure is instantaneous exceedes its design safety pressure, particularly form surging phenomenon during low discharge scope, and blower fan shafting vibration strengthens, and affects the smooth running of blower fan, causes unit to destroy time serious.
2, drop into and maintenance cost high.The mode that vent valve installed by exhaust duct requires that Valve controlling precision is high, also needs supporting respective electric control system, must drop in advance and the later stage required expense safeguarded.
Summary of the invention
Object of the present invention is just to provide a kind of low pressure centrifugal blower fan pressure limiting water seal arrangement, when low pressure centrifugal blower fan occurs that pressure exceedes setup pressure value in operation process, realize low pressure centrifugal blower fan air feed main pipeline fluid Quick-bleeding, ensure that blower fan Exhaust Gas Stress control is in safety range, prevent blower fan surge, ensure the stable operation of blower fan.
Solution of the present invention is such:
A kind of low pressure centrifugal blower fan pressure limiting water seal arrangement, comprises tornado evaporator, low pressure centrifugal blower fan and gas shut-off valve, it is characterized in that: described tornado evaporator suction port is communicated with the U-shaped water sealed tank outlet pipe of U-shaped water sealed tank constant pressure tank body upper lateral part; Described U-shaped water sealed tank pressure-bearing tank body upper lateral part is communicated with air feed main pipeline by admission line; Described U-shaped water sealed tank is provided with the water-level gauge measured water level in U-shaped water sealed tank constant pressure tank body; Described U-shaped water sealed tank is built with the liquid of setting height, and the safety being controlled low pressure centrifugal fan outlet gas by the height difference of designated water level diffuses pressure, realizes gas break-make.
Technological scheme also comprises more specifically: the constant pressure tank body upper lateral part of described U-shaped water sealed tank is provided with water-feeding valve.
Further: bottom described U-shaped water sealed tank, drain valve to be installed.
Further: the relief opening of described tornado evaporator is communicated to air.
Further: the waste pipe of described tornado evaporator is communicated to bottom U-shaped water sealed tank.
Advantage of the present invention is:
(1) safety pressure controls accurately, to be quick on the draw.The setting that fan safe diffuses pressure is realized by the height of water level in water sealed tank, when low pressure centrifugal fan outlet pressure is in range of set value, gas seals by the water level in water sealed tank, when low pressure centrifugal fan outlet pressure exceedes setting value, gas punctures former setting water seal in water sealed tank immediately, through tornado evaporator exhaust pressure relief, guarantees that blower fan runs at stable region, prevent blower fan surge, ensure the stable operation of blower fan.
(2) apparatus structure is simple, and maintenance cost is low.Device of the present invention adopts structure steel fabrication, controlling the safety pressure of gas, not needing mating electrical control system by once setting the height difference of water level in water sealed tank, does not also need manually to carry out operation and regulates, do not need regular maintenance in operation.
Accompanying drawing explanation
Accompanying drawing is for illustration of embodiments of the invention.
Accompanying drawing 1 is structural representation of the present invention.
In accompanying drawing, each parts are detailed as follows: 1, U-shaped water sealed tank, and 2, water-level gauge, 3, tornado evaporator waste pipe, 4, water-feeding valve, 5, tornado evaporator, 6, tornado evaporator relief opening, 7, tornado evaporator suction port, 8, U-shaped water sealed tank outlet pipe, 9, U-shaped water sealed tank admission line, 10, drain valve, 11, liquid, 12, gas shut-off valve, 13, air feed main pipeline, 14, low pressure centrifugal blower fan.
Embodiment
As shown in Figure 1, tornado evaporator 5 suction port 7 of the present invention is communicated with the U-shaped water sealed tank outlet pipe 8 of U-shaped water sealed tank 1 constant pressure tank body upper lateral part; Described U-shaped water sealed tank pressure-bearing tank body upper lateral part is communicated with air feed main pipeline 13 by admission line 9; Described U-shaped water sealed tank 1 is provided with the water-level gauge 2 measured water level in U-shaped water sealed tank 1 constant pressure tank body; Described U-shaped water sealed tank 1 is built with the liquid 11 of setting height, and the safety being controlled low pressure centrifugal fan outlet gas by the height difference of designated water level diffuses pressure, realizes gas break-make.Air feed main pipeline 13 two ends connect low pressure centrifugal blower fan 1 and gas shut-off valve 12 respectively.
The constant pressure tank body upper lateral part of U-shaped water sealed tank 1 is provided with water-feeding valve 4, is provided with drain valve 10 bottom U-shaped water sealed tank 1, and the pressure-bearing side tank body top air inlet pipeline 9 of the U-shaped water sealed tank 1 had is communicated on the air feed main pipeline 13 of low pressure centrifugal blower fan 14.
The relief opening 6 on described tornado evaporator 5 top is directly communicated to air.
The waste pipe 3 of described tornado evaporator 5 bottom is the bottom being communicated to U-shaped water sealed tank 1.
Be the liquid 11 that setting height is housed in described U-shaped water sealed tank 1, in the present embodiment, liquid 11 adopts water to be medium.
In the present embodiment, described admission line 9 is connected on air feed main pipeline 13, and it is poor that the supply gas pressure effect being connected to air feed main pipeline 13 can form height of water level in U-shaped water sealed tank 1, by the break-make regulating height of water level difference to realize gas; Described outlet pipe 8 is communicated to tornado evaporator 5 by the suction port 7 of tornado evaporator, is communicated to tornado evaporator 5 and can realizes diffused gas discharge after dehydration; Described waste pipe 3 is connected to U-shaped water sealed tank, be connected to U-shaped water sealed tank can realize liquid 11 water in U-shaped water sealed tank 1 total amount keep constant.The liquid 11 that setting height is housed in described U-shaped water sealed tank 1.Described U-shaped water sealed tank 1 contained liquid 11, the gas safety that dress liquid 11 can control air feed main pipeline 13 by the height difference of designated water level diffuses pressure, realizes gas break-make.
Operating process of the present invention is: see accompanying drawing 1, open water-feeding valve 4, the medium loading liquid 11(the present embodiment in U-shaped water sealed tank 1 is water), predetermined water level height is regulated by water-level gauge 2, start low pressure centrifugal blower fan 15, air feed main pipeline 13 air feed, it is poor that the tank body side, pressure-bearing side of U-shaped water sealed tank 1 forms height of water level with normal pressure tank side under gas pressure effect, when the pressure of air feed is lower than setting safety pressure scope, water seal cuts off gas, when the pressure of air feed exceedes setting safety pressure, water seal breakdown gas discharging, realize the safe and stable operation of low pressure centrifugal blower fan 14.
Claims (5)
1. a low pressure centrifugal blower fan pressure limiting water seal arrangement, comprise tornado evaporator (5), low pressure centrifugal blower fan (14) and gas shut-off valve (12), it is characterized in that: described tornado evaporator (5) suction port (7) is communicated with the U-shaped water sealed tank outlet pipe (8) of U-shaped water sealed tank (1) constant pressure tank body upper lateral part; Described U-shaped water sealed tank pressure-bearing tank body upper lateral part is communicated with air feed main pipeline (13) by admission line (9); Described U-shaped water sealed tank (1) is provided with the water-level gauge (2) measured water level in U-shaped water sealed tank (1) constant pressure tank body; Described U-shaped water sealed tank (1) is built with the liquid (11) of setting height, and the safety being controlled low pressure centrifugal fan outlet gas by the height difference of designated water level diffuses pressure, realizes gas break-make.
2. low pressure centrifugal blower fan pressure limiting water seal arrangement according to claim 1, is characterized in that: the constant pressure tank body upper lateral part of described U-shaped water sealed tank (1) is provided with water-feeding valve (4).
3. low pressure centrifugal blower fan pressure limiting water seal arrangement according to claim 1, is characterized in that: described U-shaped water sealed tank (1) bottom is provided with drain valve (10).
4. low pressure centrifugal blower fan pressure limiting water seal arrangement according to claim 1, is characterized in that: the relief opening (6) of described tornado evaporator (5) is communicated to air.
5. low pressure centrifugal blower fan pressure limiting water seal arrangement according to claim 1, is characterized in that: the waste pipe (3) of described tornado evaporator (5) is communicated to U-shaped water sealed tank (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291555.0A CN104863888B (en) | 2015-06-01 | 2015-06-01 | Low pressure centrifugal blower fan pressure limiting water seal arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291555.0A CN104863888B (en) | 2015-06-01 | 2015-06-01 | Low pressure centrifugal blower fan pressure limiting water seal arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863888A true CN104863888A (en) | 2015-08-26 |
| CN104863888B CN104863888B (en) | 2017-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510291555.0A Expired - Fee Related CN104863888B (en) | 2015-06-01 | 2015-06-01 | Low pressure centrifugal blower fan pressure limiting water seal arrangement |
Country Status (1)
| Country | Link |
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| CN (1) | CN104863888B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108201774A (en) * | 2018-01-25 | 2018-06-26 | 四川蓝海化工（集团）有限公司 | Purifying exhausting gas of yellow phosphorus device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3322771A1 (en) * | 1983-06-24 | 1985-01-03 | Alfred Teves Gmbh, 6000 Frankfurt | VALVE ARRANGEMENT TO LIMIT THE PRESSURE IN A PRINTING SYSTEM |
| CN201582198U (en) * | 2009-12-22 | 2010-09-15 | 江阴市宏达风机有限公司 | Centrifugal fan used for airflow spinning machine process |
| CN203115502U (en) * | 2013-01-11 | 2013-08-07 | 淮南市宝鼎工贸有限责任公司 | Water seal type gas pressure-limiting device |
| CN205225821U (en) * | 2015-06-01 | 2016-05-11 | 柳州钢铁股份有限公司 | Low pressure centrifugal fan voltage limiting water seal arrangement |
-
2015
- 2015-06-01 CN CN201510291555.0A patent/CN104863888B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3322771A1 (en) * | 1983-06-24 | 1985-01-03 | Alfred Teves Gmbh, 6000 Frankfurt | VALVE ARRANGEMENT TO LIMIT THE PRESSURE IN A PRINTING SYSTEM |
| CN201582198U (en) * | 2009-12-22 | 2010-09-15 | 江阴市宏达风机有限公司 | Centrifugal fan used for airflow spinning machine process |
| CN203115502U (en) * | 2013-01-11 | 2013-08-07 | 淮南市宝鼎工贸有限责任公司 | Water seal type gas pressure-limiting device |
| CN205225821U (en) * | 2015-06-01 | 2016-05-11 | 柳州钢铁股份有限公司 | Low pressure centrifugal fan voltage limiting water seal arrangement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108201774A (en) * | 2018-01-25 | 2018-06-26 | 四川蓝海化工（集团）有限公司 | Purifying exhausting gas of yellow phosphorus device |
| CN108201774B (en) * | 2018-01-25 | 2020-10-20 | 四川蓝海化工（集团）有限公司 | Yellow phosphorus tail gas purification device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104863888B (en) | 2017-12-12 |
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Granted publication date: 20171212 Termination date: 20180601 |
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