DD209683A1 - MODIFIED CIRCUIT ARRANGEMENT FOR STEAM / WATER HEAT TRANSFORMER STATION - Google Patents

Abstract

THE INVENTION CONCERNS A CIRCUIT ARRANGEMENT FOR STEAM / WATER HEAT TRANSFORMERS OF THE HEAT SUPPLY WITH STEAM / CONDENSATE CIRCUIT ON THE PRIMARY SIDE AND A HEATING CIRCUIT ON THE SECONDARY SIDE AND THE DIFFERENT WATER QUALITY OF THE MEDIA IN THE SECONDARY AND PRIMARY NETWORKS AND CLOSED CONDENSATE RECOVERY. OBJECT OF THE INVENTION IS TO DEVELOP SUCH A CIRCUIT THAT THE CAPACITOR OF THE HEAT MATERATOR STATION CAN BE OPERATED WITHOUT CONDENSATE COOLER. THIS IS PERFORMED BY MEANS OF A TEMPERATURE LIMIT VALUE, A TWO-WAY VALVE, AND A SHORT-CIRCUIT LINE BETWEEN THE PRIMARY AND THE SECONDARY NETWORKS, THAT, WHEN THE SETTING OF A SETTED LIMIT CONDENSATE TEMPERATURE, HEATING STEAM CONDENSATE IS SUBMITTED INTO THE SECONDARY NETWORK.

Description

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Title of the invention

Modified circuit arrangement for steam / water - heat converter stations (2)

Application area of the invention

The invention relates to a modified circuit arrangement for steam / water heat mixer stations, in which the heat transfer between steam as Wärmeträser and water as Heizinedium takes place, flow in the primary and secondary network media of different water quality and the Kondensatrüclcspeisung done in a closed system ·

Cha raketeristlk of the known technical solutions

The known steam / water converter stations consist on the steam / condensate (primary) side of the steam-heated heat exchanger (condenser and condensate cooler), the Kondensatrei: l -, steam traps and an open or closed condensate return system. In this case, open systems are condensate removal in which the condensate comes into contact with the atmosphere, while in closed systems the condensate does not come into contact with the atmosphere and is usually reclaimed by the steam pressure itself to the steam generator plant.

1982 * 0801)

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In the design case, the condensate leaves the steam-heated condenser at a temperature which is between 100 ⁰ C and the saturated steam temperature. The condenser must be followed by a condensate cooler, since the condensate temperature of the condensate fed back a permissible maximum value, which is set by the steam generator operator and experience is below 100 ⁰ C, must not be exceeded. These steam / water converter stations do not meet the requirements of scientific-technical port step, in particular because of their high equipment costs with condenser and condensate cooler.

By the DDR patent YfP P 24 D / 21731 Э a solution to the problem by a circuit arrangement for steam / water converter stations is shown, but is only applicable for systems with the same water quality in the primary and secondary network. Pur systems with different water quality between primary and secondary network, there is no possibility of operating capacitors without condensate cooler.

Object of the invention

The invention has the goal in Heizwasserkreisläufen that relate their heat via heating steam and in which flow in the primary and secondary network media with different water quality, a significant reduction in investment costs by saving the condensate cooler (currently as copper tube bundle heat exchanger to achieve).

Presentation of the essence of the invention

The object of the invention is to develop a circuit arrangement by means of which the operation of capacitors with condensate booster regulators without condensate cooler is possible in steam / water converter stations, wherein media of different water quality flow in the primary network and in the secondary network and the condensate return takes place in the closed system.

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This object is achieved in that the effluent from the condenser heating steam condensate no longer flows back to the steam generator system when reaching a maximum temperature, but in the secondary network. Since the state of the maximum heat exchanger capacity and thus also the exceeding of the maximum permissible condensate temperature occurs only a few hours a year, the loss of the condensate not returned to the heat generator is negligible. "At the same time, the transferred heat output increases due to the hot condensate being fed into the secondary network. Assuming that only a portion of the supplied by the heat generator steam / water Wärmeumformerstationen work according to the circuit of the invention, so in the peak time, the amount of condensate discharged into the secondary network can be compensated by feeding secondary media into the condensate network.

For systems with dynamic pressure maintenance, the additional condensate fed into the secondary network can be stored in the mains water storage tank (degasser or equalizing tank). Deriving from the ordered annual curve and the performance of a capacitor can be found that the vast operating time of the condenser, the condensate level is so high that the Heizdampfkondensat strongly undercooled leaves the condenser and can be discharged without reservation in the condensate recovery system.

Implementation example

The invention will be explained in more detail below with reference to an embodiment v / ground:

FIG. 1:

Modified circuit arrangement for steam / water converter stations

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Via the steam line 1, heating steam flows into the condenser 2, discharges so much heat that it flows in as condensate via the condensate line 3 »the two-way valve 4 and the line 5 of the steam generator system 6. When the heat exchanger capacity is increased, the condensate drain valve 8 is opened further via a temperature controller 7, the condensate level in the condenser sinking and the condensate outlet temperature rising after the condenser 2. If the condensate outlet temperature reaches a certain limit value, a pulse is applied to the controller 10 via the measuring line 9 and the position of the two-way valve 4 is changed such that the condensate passes via the condensate line 3 and the short-circuit line 11 into the secondary network 12. The secondary network 12 in addition to the secondary network losses fed amount of water is either stored in the expansion tank 13 or discharged via a Abströmlöitung 14. The consumer 15 is in addition to the amount of heat delivered in the condenser to the secondary medium, the amount of heat of Heizdampfkondensats available, resulting in peak operation, a heat output of about 5 percent. When the condensate temperature falls below the set limit value, the controller 10 switches over again and the condensate flows via line 5 to the steam generator system 6. Instead of the two-way valve can be installed in the lines also controlled by two controllers 10 engine valves.

Claims (4)

242629 2 invention claims 1. Circuit arrangement for steam / water Wärmeumformerstationen the heat supply with a steam condensate circuit on the primary side and a circulating pump driven Heizwasserkreislauf on the secondary side and different water quality of the media in the primary and secondary network and closed condensate return, characterized in that according to Figure 1 of Condenser 2 by means of a two-way valve 4, the condensate line 3 and the line 5 is connected to the steam generator system 6 and by means of the short-circuit line 11 to the secondary network 12. 2. Circuit arrangement according to item 1, characterized in that the condensate temperature is given to the condenser 2 by means of measuring line 4 to a controller 10 and compared with a set limit · 3. Circuit arrangement according to item 1 and 2, characterized in that when exceeding a limit of the controller 10, the position of the two-way valve 4 changed such that the condensate flows through the condensate line 3, the two-way valve 4 and the short-circuit line 11 into the secondary network 12. 4. Circuit arrangement according to items 1 to 3, characterized in that falls below a set limit value of the controller 10, the position of the two-way valve 4 such that the condensate on the condensate line 3, the two-way valve 4 and the line 5 of the steam generator 6 flows. For this 1 page drawings