CN1046997C - Heating Boiler Water Circulation System with Steam Generator - Google Patents

Abstract

A water circulation system of a heating boiler with a steam generator. The system consists of a boiler, a water return tower, a booster tank, a steam generator, a spray cooling device, a heat exchanger and a pipeline, wherein the booster tank is a closed high-pressure container, and is provided with a highest water level switch, a lowest water level switch, a water inlet check valve and a water outlet check valve; the steam generator is provided with a water inlet pipe and a steam outlet pipe, and the outlets of the water inlet pipe and the steam outlet pipe are positioned in the booster tank; the spray cooling device consists of a cooling water pump and a spray header which is arranged in the pressure boost tank and is positioned above the outlet of the steam output pipe. The high-temperature high-pressure steam is utilized to improve the motion pressure head of the working medium circulating system, improve working medium circulation and save electric energy.

Description

The dim boiler water cycle system of adopting of carrying vapour generator

The invention belongs to the central heating system, particularly a kind of dim boiler water cycle system of adopting of carrying vapour generator.

Flow circuit mode according to working medium, the boiler of commonly using has Natural Circulation drum-type boiler, auxiliary circulation drum boiler, direct current cooker and combined circulation boiler, the Natural Circulation drum-type boiler is to rely on interior water of evaporating heating surface (water-cooling wall) and steam water interface density contrast to form the motion pressure head of duplex matter system, often make the working medium circulation bad, special big when the heating scope, when pipeline is grown, this phenomenon is then even more serious; Auxiliary circulation drum boiler, direct current cooker and combined circulation boiler then usually will be by one

The circulating pump that power consumption is big (or feed pump) keeps the working medium normal circulation, thereby system power consumption is greatly increased to improve duplex matter system motion pressure head.

The purpose of this invention is to provide a kind of motion pressure head that utilizes high temperature, high steam to improve duplex matter system, improve working medium circulation, saves energy, make full use of the water circulation system of heating boiler of the carrying vapour generator of coal-fired heat in the boiler.

The present invention is made up of boiler, backwater tower, booster jar, steam generator, spray cooling device, heat exchanger and pipeline, and boiler is by burner hearth and formed by the hot-water line water jacket, is provided with cold water inlet and hot water outlet in the upper and lower side of water jacket; The backwater tower is provided with water inlet and delivery port, and its delivery port is communicated with the cold water inlet that is subjected to the hot-water line water jacket by the road; Booster jar is airtight high-pressure bottle, its nearly bottom is respectively equipped with into the water check valve and goes out water one-way valve, its madial wall is upper and lower to be respectively equipped with the highest, lowest water level switch, its water inlet check valve is communicated with the hot water outlet that is subjected to the hot-water line water jacket by the road, and it goes out water one-way valve and is communicated with the heating trunk line; Steam generator is provided with water inlet pipe and steam output pipe, steam generator is put flame high-temperature region in the dried burner hearth, the outlet of water inlet pipe and steam output pipe places in the booster jar, and makes the water inlet pipe outlet be positioned near the horizontal plane of peak level switch, and the steam output pipe outlet is positioned at place, the nearly top of booster jar; Spray cooling device is made up of cooling water pump, pipeline and spray head, and spray head places in the booster jar, and is positioned at steam generator steam output pipe outlet top, and the import and export of cooling water pump is communicated with backwater tower and spray head respectively by the road; The heat exchanger import and export is respectively through the heating trunk line with water return pipeline goes out water one-way valve with booster jar and the backwater tower is communicated with.

Because during system of the present invention operation, the heat of the interior fired coal combustion of burner hearth stands the hot-water line water jacket water is heated, and make steam generator produce high temperature and high pressure steam, make the hot water pressure build up under the high temperature and high pressure steam effect in the booster jar, and under it promotes, open out water one-way valve, to heating trunk line output hot water, when water level in the booster jar drops to lowest water level switch place water level, the lowest water level switch closure starts cooling water pump, make spray head atomized water spray cooling of charge jar top steam, the booster jar internal pressure is reduced form negative pressure, water one-way valve is driven in suction into, the hot water that is subjected in the hot-water line water jacket is entered in the booster jar with the water inlet check valve by the road, when water level reaches peak level switch place water level, the peak level switch disconnects, cooling water pump is shut down, steam generator makes hot water pressure build up again in the booster jar from the water inlet pipe moisturizing and through the high pressure high temperature vapor of steam output pipe output, so go round and begin again, make the water in the heating system under the high-pressure and high-temperature steam effect that steam generator produces, form the motion pressure head, improve the water circulation, directly utilize coal-fired heat, save electric energy, thereby reach purpose of the present invention.

Fig. 1 is a system architecture schematic diagram of the present invention

Fig. 2 is a spray cooling device electrical schematic diagram of the present invention

Below in conjunction with accompanying drawing the present invention is further elaborated

As shown in Figure 1, the present invention is made up of boiler 1, backwater tower 2, booster jar 3, steam generator 4, spray cooling device 5, heat exchanger 6 and pipeline 7, boiler 1 is made up of burner hearth 11 and heat pipe water jacket 12, be provided with cold water inlet 121 and hot water outlet 122 in water jacket 12 lower and upper, backwater tower 2 is provided with water inlet 21 and delivery port 22, and its delivery port 22 71 is communicated with the cold water inlet 121 that is subjected to hot-water line water jacket 12 by the road; Booster jar 3 is the high-pressure bottle of sealing, its nearly bottom is respectively equipped with into water check valve 31 and goes out water one-way valve 32, upper and lower peak level switch 33 and the lowest water level switch 34 of being respectively equipped with of its madial wall, its water inlet check valve 31 72 is communicated with the hot water outlet 122 that is subjected to hot-water line water jacket 12 by the road, and it goes out water one-way valve 32 and is communicated with heating main line 73; Steam generator 4 is provided with water inlet pipe 41 and steam output pipe 42, steam generator 4 places 111 places, flame high-temperature region in the burner hearth 11, outlet 411,412 of water inlet pipe 41 and steam output pipe 42 places in the booster jar 3 on it, and the outlet 411 that makes water inlet pipe 41 is positioned near the peak level switch 33 the horizontal plane, preferably be positioned on the same horizontal plane, the outlet 421 of steam output pipe 42 is positioned at the place, nearly top of booster jar 3; Spray cooling device 5 is made up of cooling water pump 51, pipeline 52 and spray head 53, spray head 53 places in the booster jar 3, and be positioned at the top of outlet 421 of the steam output pipe 42 of steam generator 4, the import and export 511,512 of cooling water pump 51 pipeline 521,522 respectively is communicated with backwater tower 2 and spray head 53, as shown in Figure 2, the motor 513 of cooling water pump 51 is arranged in the circuit that is made of power supply 8, peak level switch 33 and lowest water level switch 34, peak level switch 33 is that (normally closed) cuts off switch, and lowest water level switch 34 closes for (often opening) moving make and break; The import and export 61,62 of heat exchanger 6 respectively through heating main line 73 and water return pipeline 74 and booster jar 3 go out water one-way valve 32 and backwater tower 2 is communicated with.

When system moves, the heat of burner hearth 11 interior fired coal combustions stands hot-water line water jacket 12 water is heated, and make the steam generator 4 that is positioned at flame high-temperature region 111 produce high temperature and high pressure steam, through steam output pipe 42 input booster jars 3, make the hot water pressure build up under the high temperature and high pressure steam effect in the booster jar 3, and under pressure promotes, open out water one-way valve 32, through the hot water of heating trunk line 73 to heat exchanger 6 output post bake, when water level in the booster jar 3 drops to lowest water level switch 34 places, lowest water level switch 34 closures, start cooling water pump 51, make cooling water enter spray head 53, spray head 53 atomized water spray cooling of charge jars 3 internal upper part steam, make the steam condensation, booster jar 3 internal pressures reduce and form negative pressure, water one-way valve 31 is driven in suction into, make the hot water that is subjected in the hot-water line water jacket 12 by the road 72 and water inlet check valve 31 enter in the booster jar 3, when water level in the booster jar 3 reaches peak level switch 33 places, peak level switch 33 disconnects, cooling water pump 51 is shut down, steam generator 4 is from water inlet pipe 41 moisturizings and through steam output pipe 42 output high temperature and high pressure steams, make another pressure build up of hot water in the booster jar 3, so go round and begin again, constitute the circulation of heating system water.

Claims (2)

1, a kind of water circulation system of heating boiler of carrying vapour generator, it has boiler, backwater tower, heat exchanger and pipeline, and boiler is by burner hearth and formed by the hot-water line water jacket, is provided with cold water inlet and hot water outlet in the upper and lower side of water jacket; The backwater tower is provided with water inlet and delivery port, its delivery port is communicated with the cold water inlet that is subjected to the hot-water line water jacket by the road, it is characterized in that the present invention also has booster jar, steam generator and spray cooling device, booster jar is airtight high-pressure bottle, the water inlet check valve is set respectively and goes out water one-way valve near the place, bottom, at the highest, the lowest water level switch of the upper and lower setting respectively of the madial wall of booster jar; The water inlet check valve of booster jar is communicated with the hot water outlet that is subjected to the hot-water line water jacket by the road, it goes out water one-way valve and is communicated with the heating trunk line, steam generator is provided with water inlet pipe and steam output pipe, described steam generator places flame high-temperature region in the burner hearth, the outlet of water inlet pipe and steam output pipe places in the booster jar, and making the water inlet pipe outlet be positioned near the horizontal plane of peak level switch, the steam output pipe outlet is positioned at place, the nearly top of booster jar; Spray cooling device is made up of cooling water pump, pipeline and spray head, and spray head places in the booster jar, and is positioned at steam generator steam output pipe outlet top, and the import and export of cooling water pump is communicated with backwater tower and spray head respectively by the road; The heat exchanger import and export is respectively through the heating trunk line with water return pipeline goes out water one-way valve with booster jar and the backwater tower is communicated with.

2, the water circulation system of heating boiler of carrying vapour generator according to claim 1 is characterized in that the water inlet pipe outlet of described steam generator is positioned on the same horizontal plane with the peak level switch.

Images