CN219367592U

CN219367592U - Boiler drainage circulation system

Info

Publication number: CN219367592U
Application number: CN202222868045.3U
Authority: CN
Inventors: 曾哲宠; 余其芳; 江云锋; 周春光; 崔波
Original assignee: Quzhou Donggang Environmental Protection Thermal Power Co ltd
Current assignee: Quzhou Donggang Environmental Protection Thermal Power Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-07-18
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a boiler drainage circulation system which comprises a continuous-row expansion vessel and a fixed-row pool, wherein a water inlet of the continuous-row expansion vessel is communicated with a boiler drain pipe, a water outlet of the continuous-row expansion vessel is provided with a water outlet valve of the continuous-row expansion vessel, a water outlet of the continuous-row expansion vessel is communicated with a bypass pipe and a continuous-row heat exchanger, two sides of the continuous-row heat exchanger are respectively communicated with a cooling liquid water inlet pipe and a cooling liquid water outlet pipe, a water inlet valve of the continuous-row heat exchanger is arranged at the water inlet of the continuous-row heat exchanger, a water outlet of the continuous-row heat exchanger is provided with a water outlet valve of the continuous-row heat exchanger, the bypass pipe and the continuous-row heat exchanger are both communicated with a water inlet of the fixed-row pool, and the fixed-row pool is communicated with a circulating jellyfish pipe through a pressurizing mechanism. According to the boiler drainage circulation system, the continuous drainage heat exchanger is arranged, so that the enthalpy value of hot water in the part of boiler drainage is reduced, energy is recovered, and the whole thermodynamic cycle is participated; through setting up fixed pond and booster mechanism, with this part water recycle, practiced thrift the water resource, avoided the thermal pollution of rainwater system.

Description

Boiler drainage circulation system

Technical Field

The utility model belongs to the technical field of boiler drainage circulation, and particularly relates to a boiler drainage circulation system.

Background

When the boiler operates, only the heat of flame and high-temperature flue gas absorbed by the heating surface is continuously taken away by water or steam, so that the metal of the heating surface is cooled to a certain extent, and the boiler can effectively and safely operate. Therefore, the water or steam-water mixture in the boiler must continuously and regularly circulate in a closed circuit.

The boiler drainage temperature is high, the total amount is 1% of the boiler evaporation capacity, the temperature is about 200 ℃, the existing boiler drainage circulation system directly discharges boiler drainage into a rainwater system, and after entering the rainwater system, heat pollution is caused, water resources are wasted.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a boiler drainage circulating system so as to solve the defects that the existing boiler drainage circulating system directly discharges boiler drainage into a rainwater system, and after entering the rainwater system, the boiler drainage circulating system causes heat pollution and wastes water resources.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a boiler drainage circulation system, includes even arranges the expansion vessel and decides the pond, even arrange the water inlet of expansion vessel and boiler drain pipe intercommunication, even arrange the expansion vessel water outlet and install even arrange the expansion vessel water outlet valve, even arrange the delivery port intercommunication of expansion vessel and have bypass pipe and even arrange the heat exchanger, be equipped with the bypass pipe valve on the bypass pipe, even arrange the heat exchanger both sides and communicate respectively and have coolant liquid inlet tube and coolant liquid outlet pipe, be equipped with the coolant liquid water intaking valve on the coolant liquid inlet tube, be equipped with the coolant liquid water outlet valve on the coolant liquid outlet pipe, even arrange the heat exchanger water inlet valve is installed even to the water inlet of heat exchanger, even arrange the delivery port of heat exchanger and install even arrange the heat exchanger water outlet valve, the bypass pipe with even arrange the delivery port of heat exchanger all with decide the water inlet intercommunication of pond of arranging the pond, it is through booster mechanism and circulating jellyfish pipe intercommunication to decide the delivery port of arranging the pond.

As a further scheme of the utility model, the pressurizing mechanism comprises a first pressurizing pump and a second pressurizing pump, the first pressurizing pump and the second pressurizing pump are respectively communicated with the water outlet of the fixed-row pool, the water inlet and the water outlet of the first pressurizing pump are respectively provided with a first pressurizing pump water inlet valve and a first pressurizing pump water outlet valve, and the water inlet and the water outlet of the second pressurizing pump are respectively provided with a second pressurizing pump water inlet valve and a second pressurizing pump water outlet valve.

As a further scheme of the utility model, a water outlet of the fixed discharge pool is provided with a fixed discharge pool water outlet valve, the fixed discharge pool water outlet valve is an electromagnetic valve, a liquid level switch is arranged in the fixed discharge pool, and the fixed discharge pool water outlet valve and the pressurizing mechanism are controlled by the liquid level switch.

As a further scheme of the utility model, the liquid level switch is arranged at two thirds of the liquid level of the fixed-row pool.

Compared with the prior art, the boiler drainage circulation system provided by the utility model has the following beneficial effects:

1. the boiler drainage circulation system reduces the enthalpy value of the hot water in the part of boiler drainage by arranging the continuous drainage heat exchanger, and the energy is recovered to participate in the whole thermodynamic cycle.

2. This boiler drainage circulation system is through setting up fixed pond and the booster mechanism of arranging, with this part water recycle, has practiced thrift the water resource, has avoided the thermal pollution of rainwater system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only examples of embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of piping connection according to an embodiment of the present utility model;

fig. 2 is a flow chart of an embodiment of the present utility model.

Reference numerals:

1-row expansion vessel, 11-row expansion vessel outlet valve, 2-bypass pipe valve, 3-row heat exchanger, 31-coolant inlet valve, 32-coolant outlet valve, 33-row heat exchanger inlet valve, 34-row heat exchanger outlet valve, 4-fixed row pool, 41-fixed row pool outlet valve, 5-first booster pump, 51-first booster pump inlet valve, 52-first booster pump outlet valve, 6-second booster pump, 61-second booster pump inlet valve, 62-second booster pump outlet valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of the implementation routine of the present utility model is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be a communication between the interiors of two elements; either directly or indirectly through intermediaries, the specific meaning of the terms in the embodiments of the utility model will be understood by those skilled in the art in the specific case.

Referring to fig. 1-2, a boiler drain circulation system, comprising: the water inlet of the continuous-row expansion vessel 1 is communicated with a boiler drain pipe, the water outlet of the continuous-row expansion vessel 1 is provided with a continuous-row expansion vessel water outlet valve 11, the water outlet of the continuous-row expansion vessel 1 is communicated with a bypass pipe and a continuous-row heat exchanger 3, the bypass pipe is provided with a bypass pipe valve 2, both sides of the continuous-row heat exchanger 3 are respectively communicated with a cooling liquid water inlet pipe and a cooling liquid water outlet pipe, the cooling liquid water inlet pipe is provided with a cooling liquid water inlet valve 31, the cooling liquid water outlet pipe is provided with a cooling liquid water outlet valve 32, the water inlet of the continuous-row heat exchanger 3 is provided with a continuous-row heat exchanger water inlet valve 33, the water outlet of the continuous-row heat exchanger 3 is provided with a continuous-row heat exchanger water outlet valve 34, the water outlet of bypass pipe and even arrange heat exchanger 3 all with decide the water inlet intercommunication of arranging pond 4, decide the water outlet of arranging pond 4 and pass through booster mechanism and circulating jellyfish pipe intercommunication, decide the water outlet of arranging pond 4 and install and decide to arrange pond water outlet valve 41, decide to arrange pond water outlet valve 41 and be the solenoid valve, decide to arrange the pond 4 and install liquid level switch in, liquid level switch sets up in deciding the two-thirds department of arranging pond 4 liquid level, decide to arrange pond water outlet valve 41 and booster mechanism and be controlled by liquid level switch, can be when deciding to arrange the liquid level in pond 4 and reach two-thirds of liquid level, make first booster pump 5 and second booster pump 6 automatic water pumping, send to circulating jellyfish pipe.

The pressurizing mechanism comprises a first pressurizing pump 5 and a second pressurizing pump 6, the first pressurizing pump 5 and the second pressurizing pump 6 are respectively communicated with the water outlet of the fixed-row pool 4, a first pressurizing pump water inlet valve 51 and a first pressurizing pump water outlet valve 52 are respectively arranged at the water inlet and the water outlet of the first pressurizing pump 5, a second pressurizing pump water inlet valve 61 and a second pressurizing pump water outlet valve 62 are respectively arranged at the water inlet and the water outlet of the second pressurizing pump 6, and the pressurizing water yield is improved.

Referring to fig. 1-2, when the boiler starts to continuously drain water, firstly, the cooling liquid inlet valve 31 and the cooling liquid outlet valve 32 of the continuous heat exchanger 3 are opened, then the water inlet valve 33 and the water outlet valve 34 of the continuous heat exchanger are opened, then the water outlet valve 11 of the continuous expansion vessel is opened, the bypass pipe valve 2 is closed, at this time, the continuous water passes through the continuous heat exchanger 3, then the water outlet valve 41 of the constant-discharge tank is opened, the water inlet valve 51 of the first booster pump, the water outlet valve 52 of the first booster pump, the water inlet valve 61 of the second booster pump and the water outlet valve 62 of the second booster pump are opened, and when the liquid level in the constant-discharge tank 4 reaches two thirds, the first booster pump 5 and the second booster pump 6 start to automatically drain water and send the water to the main circulating water pipe.

While the basic principles of the present utility model have been shown and described, the foregoing is provided by way of illustration of a preferred embodiment of the utility model, and not by way of limitation, the foregoing embodiment and description are merely illustrative of the principles of the utility model, and any modifications, equivalents, improvements or modifications not within the spirit and scope of the utility model should be included within the scope of the utility model.

Claims

1. A boiler drain circulation system, characterized by: including lining up dilatation ware (1) and deciding row pond (4), the water inlet and the boiler drain pipe intercommunication of lining up dilatation ware (1), the delivery port of lining up dilatation ware (1) is installed and is lined up dilatation ware outlet valve (11), the delivery port intercommunication of lining up dilatation ware (1) has bypass pipe and is lined up heat exchanger (3), be equipped with bypass pipe valve (2) on the bypass pipe, it has coolant inlet tube and coolant outlet pipe to link up heat exchanger (3) both sides intercommunication respectively, be equipped with coolant inlet valve (31) on the coolant inlet tube, be equipped with coolant outlet valve (32) on the coolant outlet pipe, link up heat exchanger water intaking valve (33) are installed to the water inlet of lining up heat exchanger (3), link up the delivery port of lining up heat exchanger outlet valve (34), bypass pipe with link up the delivery port of lining up heat exchanger (3) all with decide row pond (4) water inlet intercommunication, decide row pond (4) delivery port and pass through the female pipe intercommunication of circulation.

2. A boiler drain circulation system according to claim 1, wherein: the supercharging mechanism comprises a first supercharging pump (5) and a second supercharging pump (6), the first supercharging pump (5) and the second supercharging pump (6) are respectively communicated with a water outlet of the fixed-row pond (4), a first supercharging pump water inlet valve (51) and a first supercharging pump water outlet valve (52) are respectively arranged at a water inlet and a water outlet of the first supercharging pump (5), and a second supercharging pump water inlet valve (61) and a second supercharging pump water outlet valve (62) are respectively arranged at a water inlet and a water outlet of the second supercharging pump (6).

3. A boiler drain circulation system according to claim 1, wherein: the water outlet of the fixed discharge pool (4) is provided with a fixed discharge pool water outlet valve (41), a liquid level switch is arranged in the fixed discharge pool (4), and the fixed discharge pool water outlet valve (41) and the pressurizing mechanism are controlled by the liquid level switch.

4. A boiler drain circulation system according to claim 3, characterized in that: the liquid level switch is arranged at two thirds of the liquid level of the fixed-row pool (4).