KR0109173Y1 - Feed water unit of steam boiler - Google Patents

Abstract

The present invention relates to a water supply device for a steam boiler. More specifically, a heat exchanger is directly installed in a steam chamber inside a conventional steam boiler body at an appropriate height than the water surface of a water chamber in a boiler body to integrate the steam boiler and the heat exchanger into a closed circulation circuit. Remove steam traps and coarse water tanks installed in ordinary steam boilers, eliminate the occasional operation of feed water pumps, and drop all the amount of saturated saturated water generated from heat exchangers by specific gravity without applying power from outside. The present invention relates to a water supply device for a steam boiler that is directly supplied to a water chamber in the body so that a constant water level can be maintained at all times without supplementing water supply by a separate power source from the outside.

The present invention detects the water level filled in the boiler body on one side of the boiler body to heat and evaporate water by the combustion heat of the burner, and a water level control switch to control the water level, and the high pressure of the steam chamber on the upper surface of the boiler body. And a low pressure control switch and a safety valve for discharging steam when the pressure in the steam chamber is higher than the set value are installed, and a water supply pump interlocked by the water level control switch for adjusting the water level in the body is installed. The burner is connected with a hot water circulation pipe that circulates the heated hot water to a hot water storage tank in which an electronic control valve and a fuel pump are installed to control the amount of combustion by a high and low pressure control switch according to the pressure of the steam chamber. Is installed directly in the steam room at a suitable height than the surface of the water chamber in the boiler body and integrated with the boiler. That is configured to be characterized.

Description

Steam boiler water supply

The present invention relates to a water supply device for a steam boiler. More specifically, a heat exchanger is directly installed in a steam chamber inside a conventional steam boiler body at an appropriate height than the water surface of a water chamber in a boiler body to integrate the steam boiler and the heat exchanger into a closed circulation circuit. Remove steam traps and condensate tanks installed in ordinary steam boilers, eliminate water pumps from time to time, and drop the strategy of condensed saturated water generated in the heat exchanger by specific gravity without applying power from the outside. The present invention relates to a water supply system for a steam boiler so that a constant water level is maintained at all times without supplying water by a separate power source from the outside.

Conventional conventional steam boiler (1) is to adjust the water level by detecting the water level filled in the boiler body on one side of the boiler body (3) to heat and evaporate the water by the combustion heat of the burner (2) as shown in FIG. To control the pressure of the steam chamber on the upper side, and to control the pressure of the steam chamber on the upper side, and to discharge the steam when the pressure in the steam chamber 29 is higher than the set value. A manual steam valve 7 is attached to the safety valve 6 and a pipeline for supplying steam to a place of use, and steam is discharged through the steam pipe 8 by the operation of the manual steam valve 7 to distribute steam. The steam header 9 and the steam pipe 31 connected to the steam header 9 are provided with an electronic automatic valve 22 and a heat exchanger 10 interlocked with the temperature control switch 13, and the heat exchanger ( The hot water storage tank 11 for storing hot water by heating the hot water by the steam supplied to 10) A temperature control switch 13 for controlling the temperature of the water is attached, and a hot water circulation pump 14 is installed in the hot water circulation pipes 12 and 12 'connecting the heat exchanger 10 and the hot water storage tank 11. do.

In addition, the steam trap 15 and the condensate tank 16 is addressed to the lower pipe connected to the heat exchanger 10, and the water level control to adjust the water level of the boiler to the pipe connected to the condensate storage tank 16 and the boiler body (3). A water supply pump 18 interlocked by the switch 4 is installed, and the burner 2 controls the combustion amount by the high and low pressure regulating switches 5 and 5 'according to the pressure of the steam chamber 29. An electronic control valve 20 and a fuel pump 19 are provided.

And adjusting the hot water temperature of the high and low pressure control switch 5, 5 ', the electronic control valve 20 of the burner 2, the water supply pump 18 and the hot water storage tank interlocked with the water level control switch 4. 23 is a fuel tank, 24 is a fuel supply pipe, 24 is a fuel supply pipe, 25 is a hot water supply tank, and 26 is a combustion chamber. , 27 is an associated valve, 28 is a manual valve, 29 is a steam chamber, 29 is a water chamber, 30 is a pressure gauge, 31 is a steam pipe, 34 is a water tank, and 35 is a year.

First, when the ignition switch (not shown) of the burner 2 installed in the electronic control panel 21 is turned on while the manual steam valve 7 is opened, the fuel supply pipe 24 connected to the fuel tank 23 is opened. When fuel is supplied to the burner 2 and ignited, the fuel is combusted in the combustion chamber 26 so that the hot heat passes through the pipe 27 through the combustion chamber and is discharged through the flue 35. Steam generated by the heating of the water in the boiler (water inside the boiler body) reaches the steam head 9 which distributes the steam through the steam pipe 8, and some steam is supplied to the steam supply source and the remaining steam is steam pipe ( When the hot water in the hot water storage tank 11 is higher or lower than the set temperature while the steam stays through the electronic exchange valve 22 interlocked with the temperature control switch 13 through 31). Temperature control switch 13 detects this The hot water circulation pump 14 stops or operates to circulate the hot water and at the same time, the automatic automatic valve 22 interlocked by the temperature control switch 13 attached to the hot water storage tank repeatedly turns on and off the heat exchanger ( 10) Maintain hot water at the set temperature by blocking or supplying hot steam.

On the other hand, the steam supplied to the heat exchanger 10 heats the hot water in the hot water heating tube 33, and the condensed saturated water passes through the steam trap 15 through the lower pipe connected to the heat exchanger 10. The condensed water is stored in the condensate storage tank 16 for the purpose of recycling, and some steam supplied to the condensate storage tank is discharged to the atmosphere through the steam discharge pipe 17.

In addition, the condensate storage tank 16 stores the water sent from the condensate and the water tank (not shown), and the steam generated in the boiler body 3 is a safety valve 6 and the condensate storage tank 16. When the water in the boiler body 3 is insufficient due to the discharge of the steam discharge pipe 17 and the steam user, the water level control switch 4 detects the water level and operates the feed water pump 18 from time to time to maintain the proper water level. If the water level of the boiler is lowered due to the failure of the water supply pump 18 or the like, the alarm (not shown) is issued just before the dangerous water level to prevent the risk of safety accident. Ringing stops the operation of the fuel pump 19 and the electronic control valve 20 to cut off the fuel and at the same time stop the operation of the burner (2).

On the other hand, when the pressure in the steam chamber 29 of the boiler body 3 is high or low, the high and low pressure control switches 5 and 5 'detect the high and low pressure and the high and low pressure control switches 5 and 5'. By controlling the combustion amount of the burner (2) by the fuel pump 19 and the electronic control valve 20 in conjunction with the () to maintain a constant pressure in the boiler body (3) to operate normally.

However, in the conventional steam boiler, when the steam generated in the boiler body reaches the inside of the heat exchanger and heats the hot water, the steam condenses and becomes saturated water, and the saturated water is discharged through the steam trap to maintain the heat exchange rate. As the pressure changes to atmospheric pressure, the condensate temperature becomes very low. For example, before the trap, the saturated water temperature at high pressure (heat exchanger steam pressure: 3 kg / ㎠) is about 143 ° C, and the saturated water temperature after trapping (saturated water temperature at atmospheric pressure). Steam is generated by the difference between the saturated water temperature of the condensed water storage tank and the saturated water temperature of atmospheric pressure, and is discharged to the outside through the steam discharge pipe attached to the condensed water storage tank to generate heat loss. The temperature of water supplied to the boiler by staying is very low (70 ~ 80 ℃), and about 50% energy of saturated water is lost). When the water level decreases due to the steam discharged by the steam discharge pipe attached to the safety valve and the condensate storage tank, the power for frequent operation of the water supply pump for water supply by the water level control switch is lost, and the steam trap and the condensate tank are attached. Due to the complicated configuration of the boiler takes a lot of installation space, there was a problem that the manufacturing cost of the boiler increases.

The present invention is to solve the above problems by installing a heat exchanger connected to the hot water circulation pipe for circulating the heated hot water to the hot water storage tank in a conventional steam boiler to a suitable height than the water surface of the water chamber in the boiler body directly It is integrated with the boiler and consists of a closed circulation circuit, which eliminates the need for steam traps and condensate storage tanks, prevents power loss due to not operating the feed water pump for supplying condensate and supply water to the chamber, and prevents saturation from heat exchangers. The purpose is to reduce the installation space of the boiler by reducing the installation space of the boiler and to reduce the construction cost of the boiler by saving the energy by naturally supplying water to the water chamber in the boiler body. do.

1 is a schematic configuration circuit diagram of a conventional conventional steam boiler

2 is a configuration circuit diagram of the steam boiler according to the present invention

3 is an enlarged view of a heat exchanger installed as a closed circuit in a steam chamber inside a steam boiler body according to the present invention.

4 is a side cross-sectional view in which the heat exchanger is installed as a closed circuit in the steam chamber inside the boiler body of FIG.

* Description of the symbols for the main parts of the drawings *

1: steam boiler 2: burner

3: boiler body 4: level control switch

5, 5 ': High and low pressure control switch 6: Safety valve

7: manual steam valve 8: steam pipe

9: steam head 10: heat exchanger

11: hot water storage tank 12, 12 ': hot water circulation pipe

13: temperature control switch 14: hot water circulation pump

15: steam trap 16: condensate storage tank

17: steam discharge pipe 18: water supply pump

19: fuel pump 20: electronic control valve

21: electronic control panel 22: electronic automatic valve

32: condensate discharge tube 33: hot water heating tube

100: heat exchanger

The present invention for achieving the above object will be described with reference to the accompanying drawings, Figures 2 to 4 as follows, the reference numerals for the configuration of the present design is the same configuration as the configuration of the conventional steam boiler more than one It will be described.

The steam boiler (1) is a water level control switch (4) for detecting the level of water filled in the boiler body on one side of the boiler body (3) for heating and evaporating water by the combustion heat of the burner (2), and the boiler body High and low pressure control switches (5, 5 ') for adjusting the pressure of the steam chamber on the upper surface of (3), and a safety valve (6) for discharging steam when the pressure in the steam chamber (29) is higher than the set value. And a manual steam valve (7) is installed to discharge steam when there is a steam use place, and a temperature control switch (13) for controlling the temperature of the hot water is attached to the hot water storage tank (11) storing the heated hot water. The hot water circulation pipes 12 and 12 'are provided with a hot water circulation pump 14.

The burner 2 has an electronic control valve 20 and fuel for controlling the amount of combustion by the high and low pressure control switches 5 and 5 'and the temperature control switch 13 according to the pressure of the steam chamber 29. The pump 19 is installed, and the water supply in the initial operation of the boiler is semi-permanently used if there is no leakage, so that the water level is reduced in case the water supply pump 18 is unnecessary or the water level is lowered due to leakage of the water supply and leakage of the water. The water supply pump 18 to be interlocked by the water level control switch 4 to adjust the is installed.

On the other hand, by the high and low pressure control switch (5, 5 ') and the temperature control switch 13, the electronic control valve 20, the fuel pump 19, and the water level control switch (20) for controlling the combustion amount of the burner (2) 4) the water supply pump 18 and the temperature control switch 13 for adjusting the hot water temperature of the hot water storage tank 11 to be connected to the electronic control panel 21 which is automatically controlled electronically (installation of the basic technical The configuration is the same as that of a conventional steam boiler), and the heat exchanger 100 installed in connection with the hot water circulation pipes 12 and 12 'for circulating the heated hot water into the hot water storage tank 11 is provided in the boiler body 3. Directly installed in the steam chamber 29 at a suitable height than the water surface of the water chamber 29 'and integral with the boiler, the heat exchanger 100 is to remove the body of the steam of the conventional heat exchanger.

Hereinafter, the working relationship will be described as follows. The same working configuration as that of the present invention and a conventional boiler is also the same.

First, when the ignition switch (not shown) of the burner 2 installed in the electronic control panel 21 is turned on while the water chamber 29 'in the boiler body 3 is filled, the burner 2 is ignited. The hot steam generated by heating the water in the boiler body 3 (water in the boiler body) is heated in the steam chamber 29 while the hot water in the heat exchanger 100 is heated. The temperature control switch 13 detects this when the hot water in the hot water storage tank 11 is stored or stored in the hot water storage tank 11 through the circulation pipes 12 and 12 'and is higher or lower than the set temperature. At the same time as controlling the electronic control valve 20 and the fuel pump 19 in conjunction with the (13) to control the combustion amount of the burner (2) to burn or extinguish to maintain the hot water at the set temperature.

The hot steam in the steam chamber 29 heats the hot water, and the condensed saturated water deprived of latent heat is dropped by the specific gravity difference, and immediately goes to the water chamber 29 'in the boiler body 3 without a separate power source. Since the condensed saturated water is directly supplied to the water chamber 29 'in the boiler body 3, the condensed saturated water is evaporated in the condensate recovery process generated by steam traps, condensate storage tanks, and feed water pumps of steam boilers. It prevents the heat loss exhausted and prevents the power loss consumed when the feed water pump is operated.

In addition, the water level control switch 4 detects the water level only when the steam generated in the boiler body 3 is insufficient in the water in the boiler body 3 due to the discharge of the safety valve 6 and the leakage of the water. 18) to operate the boiler in a normal state by adjusting the water level to an appropriate state.If the water level of the boiler is lowered due to failure of the water supply pump 18, the water level is lowered to prevent the risk of safety accident. Immediately before the alarm (not shown) sounds and stops the operation of the fuel pump 19 and the electronic control valve 20 to stop the fuel and at the same time stop the operation of the burner (2).

Meanwhile, the high and low pressure control switches 5 and 5 'installed on the upper side of the steam chamber 29 of the boiler body 3 allow the burner 2 to be operated at a set pressure of high pressure and low pressure. No pressure), and the high pressure control switch 5 is operated when the pressure increases in the steam chamber 29 of the boiler body 3 due to the high combustion. When the electronic control valve 20 and the fuel pump 19 of the burner 2 are operated to reduce the amount of combustion, the combustion is reduced. However, if the pressure continues to rise, combustion is completely shut off, and the pressure in the steam chamber 29 is lower than the set pressure. When it is lowered, the fuel is burned again, and the pressure in the boiler body 3 is kept constant so that the boiler is normally operated. The pressure in the steam chamber 29 is high, and the pressure is reduced due to the failure of the low pressure control switches 5 and 5 '. If it rises above the set value, the safety valve (6) The pressure is discharged to the outside to prevent a pressure increase in the vapor chamber 29.

As described above, the present invention installs the heat exchanger in the steam chamber inside the steam boiler body higher than the surface of the water chamber in the steam boiler body, so that the condensed saturated water generated in the heat exchanger can be changed by the specific gravity difference without applying power from the outside. As it falls down and is immediately supplied to the water chamber in the steam boiler body, it is unnecessary to install steam traps and condensate storage tanks attached to ordinary steam boilers, thereby reducing the installation space, construction, maintenance and maintenance, and reducing the manufacturing cost of the boiler. This is the effect.

Claims (1)

Water level control switch (4) for detecting the level of water filled in the boiler body on one side of the boiler body (3) for heating and evaporating water by the combustion heat of the burner (2), and the upper surface of the boiler body (3) High and low pressure control switches 5 and 5 'for adjusting the pressure of the steam chamber and a safety valve 6 for discharging steam when the pressure in the steam chamber 29 is higher than or equal to a set value. A water supply pump 18 interlocked by a position control water position 4 for adjusting the water level in the boiler body 3 is provided, and the burner 2 has a high and low pressure control in accordance with the pressure of the steam chamber 29. In the installation of the electronic control valve 20 and the fuel pump 19 for controlling the combustion amount by the switches 5 and 5 ', the hot water circulation pipe 12 and 12 for circulating the heated hot water to the hot water storage tank 11. ') Heat exchanger 100 connected to the steam to a suitable height than the water surface of the water chamber (29') in the boiler body (3) Directly installed in the chamber (29) integral with the boiler and the water supply of the steam boiler, characterized in that consisting of a closed circulation circuit.