CN204717666U - A kind of steam boiler water supply system - Google Patents
A kind of steam boiler water supply system Download PDFInfo
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- CN204717666U CN204717666U CN201520283461.4U CN201520283461U CN204717666U CN 204717666 U CN204717666 U CN 204717666U CN 201520283461 U CN201520283461 U CN 201520283461U CN 204717666 U CN204717666 U CN 204717666U
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- supply system
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Abstract
The utility model belongs to water supply system field, is specifically related to a kind of steam boiler water supply system.This steam boiler water supply system adopts and opens and closes the water check valve that valve substitutes the conventional vapor feed water system of boiler, ends the stove water backflow of steam boiler.The beneficial effect reached is: airtight cut-off better effects if, there will not be stove water to reflux and enters the phenomenon of feed pump; The stability of a system is stronger, and security reliability is higher.
Description
Technical field
The utility model belongs to water supply system field, is specifically related to a kind of steam boiler water supply system.
Background technology
The use water of steam boiler, is normally supplied from water source suction by feed pump.In conventional art, usually check-valves is set at the water outlet of feed pump, the stove aqueous reflux after stopping stoping feed pump.When boiler drum water-level gauge is indicated to down in limited time, feed pump is opened, soft water in suction water source.Because feed pump pressure is higher than pressure in boiler drum, under the effect of feed pump pressure, check-valves is opened, and water enters economizer through pipeline, through economizer heating, enters boiler upper drum.When upper drum water level reaches in limited time, feed pump is out of service.When feed pump is out of service, upper drum pressure higher than feed pump outlet pressure, in upper drum pressure effect under, closure of check ring.
Check-valves refers to and relies on medium flowing itself and automatic open and close flap, is used for the valve preventing medium from flowing backwards, also known as non-return valve, check valve, reflux valve and counterbalance valve.Check-valves belongs to a kind of automatic valve, and its Main Function prevents medium from flowing backwards, prevents pump and drive motor reversion, and the releasing of vessel media.
From check valve structure, valve is broken and can be moved within the specific limits, when feed pump is out of service, has moment water hammer, makes valve break closedown.Due to Structure Designing Problem, Fa Bai center is difficult to and valve seat center superposition, causes airtight not tight, stove water is flow backwards.Another kind of situation, the sealing of check-valves is poor, when pressure medium is less, has sub-fraction media leaks and enters feed pump.The consequence of seepage and refluence is that feed pump reverses, and time serious, high temperature furnace aqueous reflux is to feed pump pump chamber, and produce cavitation, water pump does not go up water when turn on pump, affects safe operation of the boiler.Thus, often check-valves is used together with cut-off valve string, to ensure the thorough closedown of pipeline.Because cut-off valve usually needs to control separately, therefore the water supply system of having set up cut-off valve not only can cause building the corresponding raising of cost, and operation controls relatively loaded down with trivial details.
Utility model content
In order to solve prior art exist the problems referred to above, the utility model provide a kind of there will not be stove water backflow phenomenon and operation control simple and efficient, build the low steam boiler water supply system of cost.
A kind of steam boiler water supply system of the utility model comprises water source, feed pump, keying valve and steam boiler; The water inlet of described feed pump is communicated with by pipeline one with described water source, the delivery port of described feed pump and the water inlet of described keying valve, controls mouth and is communicated with respectively by pipeline two, control valve; The delivery port of described keying valve and the water inlet of described steam boiler are by pipeline tee joint.Preferably, water source is catchment water case.The steam boiler water supply system that the utility model provides, when steam boiler water level meter is indicated to down in limited time, feed pump is opened, suction water source Nei Shui.Because feed pump lateral pressure is higher than steam boiler lateral pressure, under the effect of feed pump pressure, the control valve that feed pump outlet is arranged opens and closes pressure conduction the upper piston of valve, drive valve to break through valve rod to move downward, open, till being opened to the downward power of piston and spring dynamic balance upwards to aquaporin.Feed pump outlet pressure is larger, and the amount of unlatching is larger.Keying valve is opened, and water enters steam boiler through pipeline.When water level in steam boiler reaches in limited time, feed pump is out of service.When feed pump is out of service, steam boiler lateral pressure, higher than feed pump lateral pressure, under steam boiler lateral pressure (piston area is greater than valve and breaks area) and the effect of spring restoring force, opens and closes valve and closes.Due to open and close valve structural property caused by, no matter water hammer pressure is much, can ensure Fa Bai center and valve seat center superposition, make sealing surface reach Maximum Contact face, ensures sealing effectiveness, stops the backflow of stove water.When feed pump is out of service, feed pump outlet pressure is less than pressure in boiler barrel of steam boiler, and break diameter because keying valve piston diameter is greater than valve, piston produces a pulling force upwards, pulls valve to break move upward by valve rod; Meanwhile, the effect of beneath spring due to elastic deformation restoring force broken by valve, and also promotion valve is broken and moved upward; Two power overlap, and are formed and make a concerted effort, valve is broken and contacts with valve seat, because the action direction of two power is identical, can mutually superpose, so obturation effect is better.
Preferably, described pipeline three is installed in its one end near described steam boiler and is provided with check-valves.Preferred further, described pipeline three is installed in its one end near described keying valve and is provided with gate valve.Further preferred, the described pipeline three between described gate valve and described check-valves is installed and is provided with Pressure gauge.The check-valves that the utility model is set up cooperatively interacts with keying valve, better stove water can be played to dam effect, concrete, the pressure of return water that check-valves can dam in most of steam boiler in advance, the reflow ovens water of a small amount of seepage valve that can be open and close dams (now completely, the closing force major part that keying valve valve is broken is provided by the deformation restoring force of the spring of its inside), obturation effect is more excellent.The pipeline that it controls can block by gate valve that the utility model is set up completely, with facilitate open and close valve and feed pump overhaul maintenance.Whether the Pressure gauge that the utility model is set up can pay close attention to the hydraulic pressure size in pipeline three at any time, good with the sealing situation of the working order and keying valve that indirectly judge feed pump.
Preferably, described control valve and described pipeline one are installed respectively the switch valve being provided with and controlling its pipeline break-make separately.First the switch valve that the utility model is set up can assist and control its pipeline break-make separately, to facilitate the dismounting maintenance of feed pump and keying valve; Secondly switch valve control valve arranged can control the opening and closing opening and closing valve, to tackle emergency case by auxiliary hand-operating indirectly.
Preferably, described feed pump comprises two water pumps be arranged in parallel, and two water pumps are communicated with the keying valve be provided with and match separately respectively.The two cover water pumps that the utility model is arranged in parallel and the separate operation of keying valve control system.Can emergency processing emergency case, such as a water pump temporary derangement, needs interim increase transfer efficiency etc.
Preferably, be furnished with economizer in described steam boiler, described pipeline three is communicated with by described economizer with the upper drum of described steam boiler.Water in water supply system of the present utility model is first heated in advance by economizer, then enters in steam boiler.The design of economizer, has recycled coal-fired tail gas tailings heat.Meanwhile, the water advanced person that temperature is lower crosses economizer, then enters steam boiler.The heat that can reclaim from tail gas tailings without the water at low temperature of steam boiler heating is more.
In sum, the beneficial effect of steam boiler water supply system of the present utility model is: airtight cut-off better effects if, there will not be stove water to reflux and enters the phenomenon of feed pump; The stability of a system is stronger, and security reliability is higher; Automatic control, manipulates simple and efficient; Build cost low; Etc..
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 is water tank; 2 is pipeline one; 3 is water pump; 4 is pipeline two; 5 is control valve; 6 for opening and closing valve; 7 is gate valve; 8 is Pressure gauge; 9 is pipeline three; 10 is check-valves; 11 is economizer; 12 is steam boiler; 13 is sub-cylinder.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is further elaborated.
As shown in Figure 1, the water pump 3 that the steam boiler water supply system of the present embodiment comprises water tank 1, steam boiler 12, Liang Tai are arranged in parallel and two keying valves 6 mated respectively with water pump 3, be provided with economizer 11 in steam boiler 12; The water inlet of water pump 3 is communicated with by pipeline 1 with water tank 1, the delivery port of water pump 3 and the water inlet of keying valve 6, controls mouth and is communicated with respectively by pipeline 24, control valve 5; Open and close the delivery port of valve 6 to be communicated with by pipeline 39 with the water inlet of economizer 11, the delivery port of economizer 11 is communicated with the upper drum of steam boiler 12.Pipeline 39 is installed in its one end near steam boiler 12 and is provided with check-valves 10, at it, one end installation opening and closing valve 6 is provided with gate valve 7, the pipeline 39 between gate valve 7 and check-valves 10 is installed and is provided with Pressure gauge 8.Control valve 5 and pipeline 1 are installed respectively the switch valve being provided with and controlling its pipeline break-make separately.The venthole of steam boiler 12 is communicated with sub-cylinder 13 by tracheae.The venthole position of steam boiler 12 is also provided with Pressure gauge in portion.
The operational process of the steam boiler water supply system of the present embodiment is as follows: open gate valve 7 and switch valve, start water pump 3, water pump 3 aspirates the water in water tank 1, and it is transported by opening and closing valve 6, check-valves 10 and economizer 11 upper drum entering steam boiler 12 successively.When in upper drum, water level reaches specification requirement, control to switch off the pump 3.Under pressure of return water effect in upper drum, water check valve 10 dams part boiler blow-down water, and boiler water backwater is turned fully off at keying valve 6 place, can not enter water pump 3.In the present embodiment, generally, only need open a feed pump can reach water requirements.During emergency (such as a fault of water pump or need to increase emptying effectiveness), another water pump can be opened temporarily simultaneously.Meanwhile, can according to needed for the dismounting maintenance of all parts in water supply system, each switch valve of in good time opening and closing and gate valve.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection domain of the present utility model.
Claims (6)
1. a steam boiler water supply system, is characterized in that: comprise water source, feed pump, keying valve (6) and steam boiler (12); The water inlet of described feed pump and described water source are communicated with by pipeline one (2), the delivery port of described feed pump and the water inlet of described keying valve (6), control mouth and are communicated with respectively by pipeline two (4), control valve (5); The delivery port of described keying valve (6) is communicated with by pipeline three (9) with the water inlet of described steam boiler (12).
2. steam boiler water supply system according to claim 1, is characterized in that: described pipeline three (9) is installed in its one end near described steam boiler (12) and is provided with check-valves (10).
3. steam boiler water supply system according to claim 2, is characterized in that: described pipeline three (9) is installed in its one end near described keying valve (6) and is provided with gate valve (7).
4. steam boiler water supply system according to claim 3, is characterized in that: the upper installation of the described pipeline three (9) between described gate valve (7) and described check-valves (10) is provided with Pressure gauge (8).
5. steam boiler water supply system according to claim 1, is characterized in that: described control valve (5) and described pipeline one (2) are installed respectively the switch valve being provided with and controlling its pipeline break-make separately.
6. steam boiler water supply system according to claim 1, it is characterized in that: described feed pump comprises two water pumps (3) be arranged in parallel, two water pumps (3) are communicated with the keying valve (6) be provided with and match separately respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283461.4U CN204717666U (en) | 2015-05-05 | 2015-05-05 | A kind of steam boiler water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283461.4U CN204717666U (en) | 2015-05-05 | 2015-05-05 | A kind of steam boiler water supply system |
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| Publication Number | Publication Date |
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| CN204717666U true CN204717666U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520283461.4U Active CN204717666U (en) | 2015-05-05 | 2015-05-05 | A kind of steam boiler water supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627292A (en) * | 2016-03-14 | 2016-06-01 | 国电长源汉川第一发电有限公司 | Boiler circulating heating system and method for boiler water |
-
2015
- 2015-05-05 CN CN201520283461.4U patent/CN204717666U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627292A (en) * | 2016-03-14 | 2016-06-01 | 国电长源汉川第一发电有限公司 | Boiler circulating heating system and method for boiler water |
| CN105627292B (en) * | 2016-03-14 | 2018-05-01 | 国电长源汉川第一发电有限公司 | A kind of stove water stove machine loop heating system and its heating means |
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