CN203285707U - Device used for seal switching among multiple draught fans in induced draught system - Google Patents

Device used for seal switching among multiple draught fans in induced draught system Download PDF

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Publication number
CN203285707U
CN203285707U CN2013203305318U CN201320330531U CN203285707U CN 203285707 U CN203285707 U CN 203285707U CN 2013203305318 U CN2013203305318 U CN 2013203305318U CN 201320330531 U CN201320330531 U CN 201320330531U CN 203285707 U CN203285707 U CN 203285707U
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China
Prior art keywords
draught
water
shaped
induced draught
airduct
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Active
Application number
CN2013203305318U
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Chinese (zh)
Inventor
金佩程
俞圣杰
姚纪业
姜先
许铮
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HANGZHOU ZHONGHUAN CHEMICAL EQUIPMENTS CO Ltd
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HANGZHOU ZHONGHUAN CHEMICAL EQUIPMENTS CO Ltd
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Abstract

The utility model relates to an air duct sealing device in an induced draught system and discloses a device used for seal switching among multiple draught fans in the induced draught system. The device comprises at least two U-shaped air ducts, wherein the air inlet ends of the U-shaped air ducts are connected with an air inlet pipe of the induced draught system, the air outlet ends of the U-shaped air ducts are connected with the draught fans respectively, water inlet pipes are connected to the air inlet ends of the U-shaped air ducts respectively, water inlet valves are arranged on the water inlet pipes, drain pipes are connected to the bottom portions of the U-shaped air ducts respectively, drain valves are arranged on the drain pipes, and radar liquidometers are arranged on the U-shaped air ducts respectively. According to the technical scheme of the device used for seal switching among the multiple draught fans in the induced draught system, when a certain draught fan in the induced draught system is not used, water is led into a corresponding U-shaped air duct arranged at the front end of the draught fan to enable the two ends of the U-shaped air duct to be completely sealed by water, and the draught fan can be unblocked by drainage of the water to be restarted. The sealing method is simple, economical and effective.

Description

Sealing COMM communication in induced draught system between multi fan
Technical field
The utility model relates to a kind of induced draught system apoplexy tube sealing device, relates in particular to a kind of seal arrangement of heavy caliber airduct.
Background technique
Can produce the waste gas of various heterogeneity and type in Chemical Manufacture,, for solving environmental issue, need some emission-control equipments.Due to the needs of controlling, the airduct in emission-control equipment need to arrange some valves, to meet actual requirement of engineering, especially at the switch valve of main air blower and standby fan front.This valve need to have sealability and automatic performance preferably, because main air blower operation time, standby fan does not need operation,, if seal badly, so just easily causes the air inducing short circuit, thereby affects the blower effect of whole system.When system processing air quantity is excessive, the air main that system adopts is larger, more than diameter 800mm, if adopt pneumatic or the Electric air valve cost is very high preferably, when particularly waste gas has heavy corrosion, single air-valve just needs hundreds of thousands even higher, and the needed air-valve of the airduct of diameter more than 1200mm, the more difficult general user of allowing of its price accepts, thereby finds a kind of low price, good sealing effect, and can realize that again the airduct seal form of automatically controlling just seems particularly important.
Summary of the invention
The utility model, for deficiency of the prior art, provides a kind of low price, good sealing effect, and can realize again the sealing COMM communication between multi fan in the induced draught system of automatically controlling.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Sealing COMM communication in induced draught system between multi fan, comprise at least two U-shaped airducts, and the inlet end of described U-shaped airduct is connected with the air intake pipe of induced draught system, and the outlet side of described U-shaped airduct is connected with each blower fan respectively; The inlet end of described each U-shaped airduct is connected with intake pipe, and described intake pipe is provided with inlet valve; The bottom of each described U-shaped airduct is connected with waste pipe, and described waste pipe is provided with water discharging valve.When certain blower fan does not use, water is introduced in the U-shaped airduct of its front end setting, made U-shaped airduct two ends form sealing fully, this sealing means is simple, economical, effective.
As preferably, also comprise tank and water pump, in described tank, water is housed, described water pump is connected with tank, and the waterexit end of described water pump is connected with the intake pipe of each U-shaped airduct, and the outlet pipe of described each U-shaped airduct is connected with tank.Tank and water pump can make the water of introducing in the U-shaped airduct form circulation, more economical environment-protective.
As preferably, described each U-shaped airduct is provided with level meter.Level meter can be controlled the height of water level in the U-shaped airduct accurately.
As preferably, described liquid level is counted radar level gauge.The radar level gauge non-contact measurement, easy for installation, material settling out, firm and durable, accurately reliable.
According to the technical solution of the utility model, when in induced draught system, certain blower fan does not use, water is introduced in the U-shaped airduct of its front end setting, make U-shaped airduct two ends be sealed fully by water; If need reactivate this blower fan, only need again water to be discharged, can recover to connect.This sealing means is simple, economical, effective.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment
Sealing COMM communication in induced draught system between multi fan, as shown in Figure 1, comprise two U-shaped airducts 11,12, the inlet end 111 of described U-shaped airduct, 121 is connected with the air intake pipe 91 of induced draught system, and the outlet side 112,122 of described U-shaped airduct is connected with each blower fan 92,93 respectively; The inlet end of described each U-shaped airduct is connected with intake pipe 21,22, and described intake pipe is provided with inlet valve 31,32; The bottom of each described U-shaped airduct is connected with waste pipe 41,42, and described waste pipe is provided with water discharging valve 51,52.Also comprise tank 6 and water pump 7, in described tank, water is housed, described water pump is connected with tank, and the waterexit end of described water pump is connected with the intake pipe of each U-shaped airduct, and the outlet pipe of described each U-shaped airduct is connected with tank.Described each U-shaped airduct is provided with level meter 81,82, and described liquid level is counted radar level gauge.
If blower fan 92 is because fault or maintenance need to shut down; blower fan 92 cuts out; start water pump 7; open inlet valve 31; the water trough inner water is sent in U-shaped airduct 11; control and specify liquid level by radar level gauge 81; after reaching the appointment liquid level, close inlet valve 31 and water pump 7, start blower fan 93 systems operations; air inducing effect due to aircraft 93; as shown by arrows in FIG., form negative pressure in airduct, form as the high water column of figure difference of liquid level Hmm in U-shaped airduct 11; meet the blower fan maximum wind pressure, realize blower fan 92 induced air pipe sealing effects.
If blower fan 93, because fault or maintenance need to shut down, cuts out blower fan 93, open flowing water Valve 51, the water in U-shaped airduct 11 is back to tank through outlet pipe 41, and U-shaped airduct 11 connects; Start water pump 7, open inlet valve 32, the water trough inner water is sent in U-shaped airduct 12, by radar level gauge 82, controlled and specified liquid level, after reaching the appointment liquid level, close inlet valve 32 and water pump 7, blower fan 93 induced pipe water seals are cut off, and start blower fan 92 system operations.
Whole system switchover operation program can be applicable to realize automatic operating in exhaust treatment system control.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.

Claims (4)

1. the sealing COMM communication between multi fan in induced draught system, it is characterized in that: comprise at least two U-shaped airducts (11,12), the inlet end of described U-shaped airduct (111,121) is connected with the air intake pipe (91) of induced draught system, and the outlet side of described U-shaped airduct (112,122) are connected with each blower fan (92,93) respectively; The inlet end of described each U-shaped airduct is connected with intake pipe (21,22), and described intake pipe is provided with inlet valve (31,32); The bottom of each described U-shaped airduct is connected with waste pipe (41,42), and described waste pipe is provided with water discharging valve (51,52).
2. the sealing COMM communication between multi fan in induced draught system according to claim 1, it is characterized in that: also comprise tank (6) and water pump (7), in described tank, water is housed, described water pump is connected with tank, the waterexit end of described water pump is connected with the intake pipe of each U-shaped airduct, and the outlet pipe of described each U-shaped airduct is connected with tank.
3. the sealing COMM communication between multi fan in induced draught system according to claim 1 and 2, it is characterized in that: described each U-shaped airduct is provided with level meter (81,82).
4. the sealing COMM communication between multi fan in induced draught system according to claim 3, it is characterized in that: described liquid level is counted radar level gauge.
CN2013203305318U 2013-06-08 2013-06-08 Device used for seal switching among multiple draught fans in induced draught system Active CN203285707U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203305318U CN203285707U (en) 2013-06-08 2013-06-08 Device used for seal switching among multiple draught fans in induced draught system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203305318U CN203285707U (en) 2013-06-08 2013-06-08 Device used for seal switching among multiple draught fans in induced draught system

Publications (1)

Publication Number Publication Date
CN203285707U true CN203285707U (en) 2013-11-13

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CN2013203305318U Active CN203285707U (en) 2013-06-08 2013-06-08 Device used for seal switching among multiple draught fans in induced draught system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110672504A (en) * 2019-10-23 2020-01-10 淮安市中亚试验设备有限公司 Air door sealing device for isolating corrosive gas for combined alternating salt spray corrosion test box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110672504A (en) * 2019-10-23 2020-01-10 淮安市中亚试验设备有限公司 Air door sealing device for isolating corrosive gas for combined alternating salt spray corrosion test box

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