SU1430672A2 - Deaeration installation for hot water supply system - Google Patents

Abstract

The invention allows to increase the efficiency of the installation. Line 6 of the return mains water is connected by a jumper 13 to the line 14 of the make-up cold water at the point of its connection to the input line 15 and the heater 5. On the bridge 13 and on the line J4 there are two oppositely oriented check valves (OK) 16 and 17 respectively. When the SRI t-ry network water decreases, ui, the back network water boron from line 6 begins to flow through OK 16 into line 15 and then along with water from line 14 into the heater, which leads An increase in the temperature of water in the line 7 of the outlet of the direct mains supply. The same happens with the increase in temperature in the line 7. Thus, the bypass of water through OK 16 shifts the role of positive feedback to the control process. At max, the water separation OK 16 eliminates the flow of water from the SRI 6 back to the deaerator 1 and the ingress of raw water into the network of hot water supply, and with increasing pressure in the li OK 17 line eliminates the ingress of deaerated water from line 6 and provides This pressure is at the pressure level of line 14. 14. Il. about CO

Description

four

with about ot

N3

 NJ

The invention relates to a power system and industrial heat engineering.

The purpose of the invention is to increase work efficiency.

The drawing schematically shows the proposed installation.

Deaerating The installation for the hot water supply network contains a deaerator to which lines 2, 3 and 4 are connected, respectively, of steam supply and deaerated water and drainage of deaerated water, heater 5 of a mixture of cold and etractive network water and an extract (5 and 7, respectively return and discharge of the supply water circuit. On line 7 there is a circulation pump 8. The installation is equipped with a three-way control valve), there is a juvenile line 7 on the direct network of water to the preheater 5. The inlets of valve 9 are connected to the lines 4 and 6 about water and deaerated water supply ob-) atnoy mains water. The actuator 10 of the valve 1 and 9 is connected to the temperature controller 11, the date of which 12 is installed in the line 7 of the direct mains water behind the heater 5. Figure 6 of the reverse network water is connected to the terminal 13 with the line 14 of the charging water .; 1 water at the place of connection of the village to the input line 15 of the head 5, and on the bridge 13 and on. 14 additional supply valves are additionally installed. Two counter-connected check valves 16 and 17 are installed. On line 14 || 1 of the cold water circuit, a control valve 18 with an actuator 19 is installed, connected to the level regulator 20 and its sensor 21 in the deaerator accumulator tank ora On line 2 for supplying steam to its steam, valve 22 is installed, whose actuator 23 is connected to pressure regulator 24 and er) Sensor 25 in deaerator 1.

The deaeration installation works as follows.

The mixture of make-up cold water from line 14 and return network water from line b flows through heater 5 through line 3 to the deaerator column, where it is heated to the boiling point, at which gases are completely removed from it. Next, the deaerated water is collected in the deaerator 1 tank accumulator, from where a part of it through line 4 and some of its brotherly network water are biased and fed to the pump 8 inlet, pre-cooled to the preset temperature in the preheater 5 with a mixture of make-up cold water and reverse network water.

A mixture of deaerated water from deaerator 1 through line 4 and reverse network water through line b is through a three-way valve 9 and heater 5 is taken up by a circulation pump 8 and fed through a lins 7 to consumers of hot water. The temperature of the water in line 7 is adjusted to a predetermined value by cooling the mixture to heater 5 with cold water from line 14 by changing the ratio of the amount of water withdrawn from lines 4 and 6. The required ratio of the quantities of hotter deaerated water and the return network water from line 6 is automatically is selected by the three-way valve 9 by means of the actuator 10, controlled by the regulator 11, by the signal of the sensor 12 installed in the line 7 of the direct supply water, is supplied - - ..

Consumer to m.

Compensation of hot water intake by consumers is accomplished by replenishing deaerator 1 through line 14 through heater 5. Water level in the accumulator tank of deaerator 1 is automatically maintained by means of a control valve 18 controlled by a drive 19 according to a signal from a level regulator 20 according to a signal from sensor 21 installed in the tank battery. The temperature of the deaerated water in the storage tank is kept constant to ensure complete degassing by maintaining a constant vapor pressure in deaerator 1 by changing the amount of steam flowing through the steam line 2.

control valve 22 controlled by actuator 23 as commanded by pressure regulator 24 by a signal from sensor 25 installed in deaerator 1.

When the temperature of the supply water decreases with the help of valve 9, it increases

the amount of hot deaerated water coming from line 4 to the suction side of pump 8, and the intake of return mains water from line b, which begins to flow in greater quantities through the return claian 16 into the inlet line 15 and then along with IKJ.Pour water from line 14, decreases to the heater 5. Since the temperature of the inverse network BODY in the line b is always at the temperature of cold water in the line. 14, the total temperature of the mixture in line 15 begins to increase, which additionally influences the temperature of the water in line 7. Thus, the bypass of water through the check valve 16 performs a positive feedback in the control process. A similar situation occurs when the temperature rises in a straight network line 7, when valve 9 reduces the intake of deaerated water from section 4 and increases the intake of return network water from line 6, which begins to flow in a smaller amount through

a check valve 16 into the inlet line 15. Therefore, the temperature of the mixture in line 15 starts to decrease, which further reduces the temperature of the direct supply water.

In the absence of a water dispense, consume 1 valve 9 in the direction of the intake of deaerated water from line 4 and, conversely, is completely open to intake reverse network water from line 6. At this time

closed valve 18 feed cold water from line 14.

At the maximum consumer demand, the valve 9 is open towards the deaerated water intake from line 4 and is completely closed for returning the return water from line 6. At this time, the valve 18 for feeding cold water from line 14 is open and its pressure valve 16 is closed, resulting in This eliminates the flow of water from line 6 through lintel 13 back to deaerator I and the ingress of raw water into hot water networks.

Similarly, the check valve 17 is closed with increasing pressure in line 6, excluding the entry of deaerated water from line 6 and Oj6ecne4HBaH constant pressure in line 6 at the level of pressure in line 14.

Thus, the proposed deaeration installation with a simple, reliable and

more economical design provides a given thermodynamic mode in

A set of hot water.

Claims (1)

Invention Formula A de-aeration installation for a city network - of which water supply by aut. St. N ° 1321993, characterized in that, in order to increase the operating efficiency, the make-up water line is equipped with a check valve and is connected to the return network water line 5 by a jumper having a check valve opposed to the valve mentioned above.