CN205619248U - Stove water stove machine circulation heating system - Google Patents
Stove water stove machine circulation heating system Download PDFInfo
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- CN205619248U CN205619248U CN201620193451.6U CN201620193451U CN205619248U CN 205619248 U CN205619248 U CN 205619248U CN 201620193451 U CN201620193451 U CN 201620193451U CN 205619248 U CN205619248 U CN 205619248U
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Abstract
The utility model relates to a stove water stove machine circulation heating system, be in including boiler and setting the steam pocket of boiler top, the boiler bottom is through the one end of the first electrically operated gate of pipe connection, the other end of first electrically operated gate is arranged the flash vessel surely and is connected through the manual door of second and remove the oxygen column through first manual door connection respectively, remove the oxygen column and pass through pipe connection deoxidization water tank, the deoxidization water tank is connected to the steam pocket through the pipeline in proper order after third manually operated door, water -feeding pump, a non -return flap who corresponds with the water -feeding pump orientation and second electrically operated gate, work as second electrically operated gate self -closing during water -feeding pump jump stop. The utility model discloses can heat stove temperature degree to the default before the ignition, and have characteristics such as the energy consumption is little, fast.
Description
Technical field
This utility model relates to a kind of stove water stove machine loop heating system.
Background technology
In recent years, energy-saving and cost-reducing is the important process in all thermal power plants, safety and economic operation is the lifeblood of thermal power plant's survival and development, therefore, energy-saving and cost-reducing for thermal power plant, not only being embodied in generating set operating index and mode control aspect, for peak regulation fired power generating unit, the reduction of unit starting energy consumption is also energy-saving and cost-reducing important one side.
Thermal power plant generates electricity by way of merging two or more grid systems auxiliary equipment to be experienced startup, boiler water filling, ignition of the boiler, increasing temperature and pressure, steam turbine red switch, these stages of generator connecting in parallel with system, for 330MW unit cold start, unit starts to generator connecting in parallel with system from auxiliary equipment typically will be through about 8 hours.
Domestic design has the boiler of stove water heating system to be only limitted to Natural Circulation stove at present, and it mainly uses auxiliary steam to enter boiler water wall bottom-heated header, carries out steaming reverse thrust heating.This floor heating system is complicated, and manual operation load is big, and heating is slowly.
Forced circulation furnace uses fin panel casing mostly, its light pipe using external diameter ∮ 44.5mm and riffled tube, boiler water cycle uses forced circulation pump to promote, therefore the steaming reverse thrust heating technique that Natural Circulation stove uses is not suitable for forced circulation furnace, the most domestic relevant design that there is no this type boiler water heating system and application.
The fired power generating unit of China's forced circulation furnace is after boiler carries out cold conditions flushing at present, vapours is added generally by putting into oxygen-eliminating device, feedwater is heated to 80 DEG C～100 DEG C, at the water on boiler is carried out by pre feedwater pump or electrically driven feed pump, after hot water enters boiler, stove coolant-temperature gage can decline to a great extent because boiler tube wall temperature is relatively low, and under this situation, ignition of the boiler rises to press to boiler and typically need to experience three hours.If stove water and boiler tube wall temperature are risen to about 100 DEG C, being necessary for while hot water enters boiler bleeding off the cold water in stove, utilize the mode of punching row to promote the temperature of stove water and tube wall, such water consumption is very big, had both been unfavorable for energy-conservation, and had also been unfavorable for environmental protection.
Needing starting trouble air-introduced machine, pressure fan, primary air fan during ignition of the boiler, also to put into combustion-supporting oil and coal dust, such startup energy consumption is bigger.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of energy consumption is little, speed fast and stove water can be heated to before ignition of the boiler the stove water stove machine loop heating system of preset temperature.
The technical scheme that this utility model solves above-mentioned technical problem is as follows: a kind of stove water stove machine loop heating system, including boiler and be arranged on the drum above described boiler, described boiler bottom connects one end of the first Electrically operated gate by pipeline, the other end of described first Electrically operated gate connects respectively through first manual door surely to be arranged flash vessel and connects oxygen-removing tower through the second manually operated door, described oxygen-removing tower connects deoxygenation water tank by pipeline, described deoxygenation water tank sequentially passes through the 3rd manually operated door by pipeline, feed pump, it is connected to drum after the first non-return flap corresponding with feed pump direction and the second Electrically operated gate, when described feed pump stop jumping, the second Electrically operated gate is automatically switched off.
The beneficial effects of the utility model are: be arranged on the first Electrically operated gate below boiler for being turned on and off the outlet of boiler, owing to pipeline pressure is bigger herein, if use manually-operated gate, operator face bigger security risk, therefore use electrically operated valve when being turned on and off.Boiler is connected to first manual door one end, the first manual door other end is connected to determine row's flash vessel, so first can input cold water in boiler before stove water is circulated heating, then cold water flush boiler and pipeline are used, it is to avoid the water quality of impurity effect stove water therein.Second manually operated door is in closed mode in rinse stage, when after rinsing, water quality is qualified, close first manual door and open the second manually operated door, poor owing to there is natural height between boiler and oxygen-removing tower, boiler inner cold water can be entered oxygen-removing tower by the potential energy utilizing water, thus realizes the heating to stove water.Stove water after heating is by entering boiler after feed pump input drum, thus realizes the circulating-heating of stove water.
On the basis of technique scheme, this utility model can also do following improvement.
Further, force (forcing) pump second non-return flap corresponding with force (forcing) pump direction and the 4th manually operated door it are sequentially provided with between described second manually operated door and oxygen-removing tower.
Above-mentioned further scheme is used to provide the benefit that, sufficiently high temperature just can be heated water to owing to adding the certain pressure of vapours needs in oxygen-removing tower, if it is simple by the differential water pressures between boiler and oxygen-removing tower, then the temperature of oxygen-removing tower heating is limited, force (forcing) pump second non-return flap corresponding with force (forcing) pump direction and the 4th manually operated door it is sequentially provided with between described second manually operated door and oxygen-removing tower, stove water can be strengthened by force (forcing) pump and enter the pressure of oxygen-removing tower, thus improve maximum temperature and the efficiency of heating surface of oxygen-removing tower heating.
Further, also include that the first adjustment door and second adjusts door, described first adjusts door is arranged between described second non-return flap and the 4th manually operated door, described second adjusts door one end connects the second non-return flap one end near the first adjustment door, and described second adjusts the door other end connects force (forcing) pump one end away from described second non-return flap.
Use above-mentioned further scheme to provide the benefit that, when occur towards the water route of oxygen-removing tower stifled stagnant time, second adjusts door can form loop with force (forcing) pump, the second non-return flap, it is to avoid the flow of force (forcing) pump is too small and cavitation.
Further, the described first flow sum adjusting door and the second adjustment door is not less than the minimum discharge of described force (forcing) pump.
Above-mentioned further scheme is used to provide the benefit that, second adjusts door as the first standby adjusting door, when the first flow adjusting door is less than the minimum discharge of described force (forcing) pump, second adjusts door starts automatically, and adjusts its own traffic and make two flow sums adjusting doors not less than the minimum discharge of force (forcing) pump.
Further, it is additionally provided with filter screen between described force (forcing) pump and the second manually operated door.
Using above-mentioned further scheme to provide the benefit that, filter screen can filter out some impurity, if these impurity snap in can damage pump itself between the impeller of force (forcing) pump or feed pump, it is also possible to cause work safety accident.
Further, the fore pump of inlet pressure for improving described feed pump it is additionally provided with between described 3rd manually operated door and feed pump.
Above-mentioned further scheme is used to provide the benefit that, owing to feed pump needs hydraulic pressure in the drum that tens of rice are high, the pressure of feed pump is the biggest herein, therefore before water enters feed pump, it is introduced into a low-lift pump, i.e. improve entrance of water-supplying pump pressure by the fore pump of low pressure, add available NPSH.
Further, it is provided with economizer between described second Electrically operated gate and drum.
Use above-mentioned further scheme to provide the benefit that, owing to economizer absorbs the heat of low-temperature flue gas, reduce the exhaust gas temperature of flue gas, therefore, it is possible to save the energy, improve the efficiency of heating surface after lighting a fire.
Further, it is additionally provided with the 3rd Electrically operated gate between described first Electrically operated gate and boiler.
Using above-mentioned further scheme to provide the benefit that, the 3rd Electrically operated gate is the most standby with the first Electrically operated gate, and when one of them Electrically operated gate fault or when not closing tight, another Electrically operated gate can carry out second protection, confirms production safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model a kind of stove water stove machine loop heating system；
Fig. 2 is utility model works flow chart.
In accompanying drawing, the list of parts representated by each label is as follows:
1, boiler, 2, drum, the 31, first Electrically operated gate, the 32, second Electrically operated gate, 33, the 3rd Electrically operated gate, 41, first manual door, the 42, second manually operated door, the 43, the 3rd manually operated door, 44, the 4th manually operated door, 5, surely arrange flash vessel, 6, oxygen-removing tower, 7, deoxygenation water tank, 8, feed pump, the 9, first non-return flap, 10, fore pump, 11, force (forcing) pump, the 12, second non-return flap, 13, first adjusts door, 14, second door is adjusted, 15, filter screen, 16, economizer.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for explaining this utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of stove water stove machine loop heating system, including boiler 1 be arranged on the drum 2 above described boiler 1, connected one end of the first Electrically operated gate 31 by pipeline bottom described boiler 1, the other end of described first Electrically operated gate 31 connects respectively through first manual door 41 surely to be arranged flash vessel 5 and connects oxygen-removing tower 6 through the second manually operated door 42, described oxygen-removing tower 6 connects deoxygenation water tank 7 by pipeline, described deoxygenation water tank 7 sequentially passes through the 3rd manually operated door 43 by pipeline, feed pump 8, it is connected to drum 2 after the first non-return flap 9 corresponding with feed pump 8 direction and the second Electrically operated gate 32, when described feed pump 8 stop jumping, the second Electrically operated gate 32 is automatically switched off.
The second non-return flap 12 and the 4th manually operated door 44 that force (forcing) pump 11 is corresponding with force (forcing) pump 11 direction it is sequentially provided with between described second manually operated door 42 and oxygen-removing tower 6.
Also include that the first adjustment door 13 and second adjusts door 14, described first adjusts door 13 is arranged between described second non-return flap 12 and the 4th manually operated door 44, described second adjusts door 14 one end connects the second non-return flap 12 one end near the first adjustment door 13, and described second adjusts door 14 other end connects force (forcing) pump 11 one end away from described second non-return flap 12.
The described first flow sum minimum discharge not less than described force (forcing) pump 11 adjusting door 13 and the second adjustment door 14.
It is additionally provided with filter screen 15 between described force (forcing) pump 11 and the second manually operated door 42.
The fore pump 10 of inlet pressure for improving described feed pump 8 it is additionally provided with between described 3rd manually operated door 43 and feed pump 8.
It is provided with economizer 16 between described second Electrically operated gate 32 and drum 2.
It is additionally provided with the 3rd Electrically operated gate 33 between described first Electrically operated gate 31 and boiler 1.
Fig. 2 is work process of the present utility model:
By feed pump by deoxygenation water tank cold water on boiler；
After boiler drum level is up to standard, the cold water in boiler is arranged to determining row's flash vessel, until stopping to determining row's flash vessel draining after flowing out the water water quality reaching standard of boiler；
The water crossed in boiler is entered oxygen-removing tower heat, and the hot water after heating is inputted boiler by feed pump, with this, stove water is circulated heating；
When stove coolant-temperature gage reaches preset value, boiler stops water inlet and water outlet.
Wherein, owing to boiler carries the function of sensed water level and water quality, can pre-set water level standard and water standard, stove water preset temperature is typically at about 100 DEG C.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (8)
1. a stove water stove machine loop heating system, it is characterized in that, including boiler (1) and the drum (2) being arranged on above described boiler (1) and connect with described boiler (1), described boiler (1) bottom connects one end of the first Electrically operated gate (31) by pipeline, the other end of described first Electrically operated gate (31) connects respectively through first manual door (41) surely to be arranged flash vessel (5) and connects oxygen-removing tower (6) through the second manually operated door (42), described oxygen-removing tower (6) connects deoxygenation water tank (7) by pipeline, described deoxygenation water tank (7) sequentially passes through the 3rd manually operated door (43) by pipeline, feed pump (8), it is connected to drum (2) after first non-return flap (9) and the second Electrically operated gate (32), when described feed pump (8) stop jumping, the second Electrically operated gate (32) is automatically switched off.
A kind of stove water stove machine loop heating system, it is characterized in that, between described second manually operated door (42) and oxygen-removing tower (6), be sequentially provided with force (forcing) pump (11), the second non-return flap (12) and the 4th manually operated door (44).
A kind of stove water stove machine loop heating system, it is characterized in that, also include that the first adjustment door (13) and second adjusts door (14), described first adjusts door (13) is arranged between described second non-return flap (12) and the 4th manually operated door (44), described second adjusts door (14) inflow end connects the second non-return flap (12) one end near the first adjustment door (13), and described second adjusts door (14) outflow end connects force (forcing) pump (11) one end away from described second non-return flap (12).
A kind of stove water stove machine loop heating system, it is characterized in that, described first adjusts door (13) and second adjusts the flow sum minimum operating flux continuously not less than described force (forcing) pump (11) of door (14).
A kind of stove water stove machine loop heating system, it is characterised in that be additionally provided with filter screen (15) between described force (forcing) pump (11) and the second manually operated door (42).
A kind of stove water stove machine loop heating system, it is characterized in that, between described 3rd manually operated door (43) and feed pump (8), be additionally provided with the fore pump (10) of inlet pressure for improving described feed pump (8).
A kind of stove water stove machine loop heating system, it is characterised in that be provided with economizer (16) between described second Electrically operated gate (32) and drum (2).
8. according to stove water stove machine loop heating system a kind of described in any one of claim 1-7, it is characterised in that be additionally provided with the 3rd Electrically operated gate (33) between described first Electrically operated gate (31) and boiler (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620193451.6U CN205619248U (en) | 2016-03-14 | 2016-03-14 | Stove water stove machine circulation heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620193451.6U CN205619248U (en) | 2016-03-14 | 2016-03-14 | Stove water stove machine circulation heating system |
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| CN205619248U true CN205619248U (en) | 2016-10-05 |
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| CN201620193451.6U Active CN205619248U (en) | 2016-03-14 | 2016-03-14 | Stove water stove machine circulation heating 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 |
-
2016
- 2016-03-14 CN CN201620193451.6U patent/CN205619248U/en active Active
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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |