CN210118731U

CN210118731U - Boiler blowdown steam recycle device

Info

Publication number: CN210118731U
Application number: CN201920777780.9U
Authority: CN
Inventors: 王腾飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-02-28
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a boiler blowdown steam recycle device, the input of deciding row flash tank connects the boiler, and the heat exchanger is connected to the output, and the drain trap is connected to the output of heat exchanger, and the heat exchanger passes through heating feed pipe and heating wet return connection radiator, sets up the circulating pump on heating feed pipe or the heating wet return, and the drain trap passes through moisturizing pipeline and connects the heating wet return, is equipped with the moisturizing pump on the moisturizing pipeline. The hot steam generated by the fixed-row flash tank enters the heat exchanger to exchange heat with the water in the radiator circulation loop, and the hot steam after heat exchange is changed into water which enters the drain tank through the output end of the heat exchanger to be stored. When the water quantity in the radiator circulation loop is reduced, the drain tank can supplement water for the radiator circulation loop through the water supplementing pipeline. The recycling device carries out secondary utilization on the steam discharged by the boiler, and saves energy and reduces emission.

Description

Boiler blowdown steam recycle device

Technical Field

The utility model relates to a boiler blowdown steam recycle device.

Background

In the operation process of the boiler, in order to control the quality of the boiler water to meet the specified standard and keep impurities in the boiler water within a certain limit, the sediments such as mud slag and the like in the boiler can be discharged out of the boiler along with the boiler water through continuous pollution discharge and periodic pollution discharge, so that the water circulation and heat transfer efficiency of the boiler are prevented from being influenced by the accumulated water scale in the boiler, and the safe, stable and economic operation of the boiler is ensured.

The boiler pollution discharge includes continuous pollution discharge and periodic pollution discharge, a method for continuously discharging furnace water with high salinity is called continuous pollution discharge, and a method for periodically discharging sediments in the furnace water is called periodic pollution discharge. The sewage contains a small amount of deposits such as scale, silt and the like. Most contain a large amount of heat energy to soften water.

If the continuous drainage and the fixed drainage are directly discharged, not only water resources are wasted, but also a large amount of heat energy is wasted, and meanwhile, the environment is polluted by heat, and how to recycle the environment is a technical problem which needs to be solved urgently by technical personnel in the field.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a boiler blowdown steam recycle device.

The application provides a boiler blowdown steam recycle device, includes: the device comprises a fixed-row flash tank, a heat exchanger, a radiator and a drain tank;

the input of deciding row flash vessel connects the boiler, and the output is connected the heat exchanger, the output of heat exchanger is connected the drain trap, the heat exchanger is connected through heating feed pipe and heating wet return the radiator, the heating feed pipe or set up the circulating pump on the heating wet return, the drain trap passes through the moisturizing pipeline and connects the heating wet return, be equipped with the moisturizing pump on the moisturizing pipeline.

Optionally, the circulation pump is disposed on the heating water return pipe, a water return drum is disposed on the heating water return pipe, and the water return drum is located at a downstream position of the water replenishing pipeline and at an upstream position of the circulation pump.

Optionally, a check valve and a pressure gauge are arranged on the water replenishing pipeline, and the pressure gauge is located at the downstream position of the check valve.

Optionally, a pipeline through which the fixed-displacement flash tank is communicated with the heat exchanger is provided with an automatic adjusting valve, a pressure sampling device and a safety valve.

Optionally, the pressure sampling device is electrically connected with the automatically adjusting valve by signals, and the pressure sampling device is electrically connected with a main control chamber of the boiler.

Compared with the prior art, the technical scheme of the utility model have following advantage:

the hot steam generated when the fixed-row flash tank discharges sewage regularly to the boiler enters the heat exchanger, in the heat exchanger, the hot steam exchanges heat with aquatic products in a circulating loop of the radiator, the water is supplied to the radiator through a heating water supply pipe, the hot steam circulates back to the heat exchanger after being radiated by the radiator, the heat exchange with the hot steam is continued, the hot steam after the heat exchange is changed into water, and the water enters the drain tank through the output end of the heat exchanger for storage. When the water quantity in the radiator circulation loop is reduced, the drain tank can supplement water for the radiator circulation loop through the water supplementing pipeline. The recycling device carries out secondary utilization on the steam discharged by the boiler, and saves energy and reduces emission.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic structural view of a specific embodiment of a boiler blow-down steam recycling device provided by the present invention;

wherein the correspondence between the description of the figures in fig. 1 and the names of the components is as follows:

a fixed-row flash tank 1; a heat exchanger 2;

a circulation pump 3; a drain tank 4;

a water replenishing pump 5; a heat sink 6;

a heating water return pipe 7; and a heating water supply pipe 8.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a specific embodiment of a boiler blow-down steam recycling device provided by the present invention.

In a specific embodiment, the utility model provides a boiler blowdown steam recycle device, include: the device comprises a fixed-row flash tank 1, a heat exchanger 2, a radiator 6 and a drain tank 4;

the boiler is connected to the input of deciding row flash tank 1, and the output is connected heat exchanger 2, the output of heat exchanger 2 is connected drain box 4, heat exchanger 2 is connected through heating feed pipe 8 and heating wet return 7 radiator 6, heating feed pipe 8 or set up the circulating pump on the heating wet return 7, drain box 4 is connected through the moisturizing pipeline heating wet return 7 is double, be equipped with moisturizing pump 5 on the moisturizing pipeline.

The heat exchanger 2, the heating water supply pipe 8, the heating water return pipe 7 and the radiator 6 constitute a radiator circulation circuit. The hot steam that produces when deciding row flash vessel 1 carries out periodic blowdown to the boiler gets into heat exchanger 2, and in heat exchanger 2, hot steam exchanges with the aquatic themogenesis in the radiator circulation circuit, and the hot steam after the heat exchange becomes water, gets into drain trap 4 through the output of heat exchanger and stores. In the radiator circulation loop, a heating water supply pipe 8 supplies water for the radiator 6, after the heat is radiated by the radiator 6, the water is circulated back to the heat exchanger 2 through a heating water return pipe 7, the heat exchange with the hot steam is continued, and when the water quantity in the radiator 2 circulation loop is reduced, the drain tank 4 can supplement water for the radiator circulation loop through a water supplement pipeline.

This recycle device has carried out the reutilization to the steam of boiler blowdown, first-selected utilizes heat exchanger 2 to provide the heat for radiator circulation circuit to store the water that produces after will cooling in drain box 4, can be for circulation circuit moisturizing, both utilized the heat of hot steam, reduced the emission again.

Specifically, the circulating pump 3 is disposed on the heating water return pipe 7, a water return bag is disposed on the heating water return pipe 7, and the water return bag is located at a downstream position of the water supply pipeline and at an upstream position of the circulating pump 3.

The circulating pump 3 provides power for the radiator circulating loop, and when the water quantity in the circulating loop is reduced, water can be supplemented into the heating water return pipe 7 through the water supplementing pipe.

Furthermore, be equipped with check valve and manometer on the moisturizing pipeline, the manometer is located the low reaches position of check valve.

The moisturizing pipeline passes through moisturizing pump 5 to the moisturizing in the heating wet return 7, and the manometer can still acquire the pressure of moisturizing pipeline, and the check valve can effectively prevent water reflux.

In each of the above specific embodiments, an automatic adjusting valve, a pressure sampling device, and a safety valve are disposed on a pipeline through which the fixed displacement flash tank 1 communicates with the heat exchanger 2.

Specifically, the pressure sampling device is electrically connected with the automatic regulating valve through signals, and the pressure sampling device is electrically connected with a main control chamber of the boiler.

The pressure sampling signal controls the automatic adjusting valve, sets the pressure of the fixed-row flash tank 1, enables the emptying door of steam to be automatically adjusted, and meanwhile, the pressure sampling signal is transmitted to the boiler main control chamber to be monitored in real time, so that the stable-pressure operation of the fixed-row flash tank 1 is realized.

It is right above that the utility model provides a boiler blowdown steam recycle device has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a boiler blowdown steam recycle device which characterized in that includes: the device comprises a fixed-row flash tank, a heat exchanger, a radiator and a drain tank;

2. The boiler blow-down steam recycling device according to claim 1, wherein the circulation pump is provided on the heating water return pipe, and a water returning pocket is provided on the heating water return pipe, the water returning pocket being located at a downstream position of the water replenishing pipe line and at an upstream position of the circulation pump.

3. The boiler blow-down steam recycling device according to claim 2, wherein a check valve and a pressure gauge are provided on the water replenishing pipe, and the pressure gauge is located downstream of the check valve.

4. The boiler blow-down steam recycling device according to any one of claims 1 to 3, wherein a pipeline of the constant-displacement flash tank communicating with the heat exchanger is provided with an automatic regulating valve, a pressure sampling device and a safety valve.

5. The boiler blowdown steam recycling device of claim 4, wherein the pressure sampling device is electrically connected with the automatically adjusting valve by a signal, and the pressure sampling device is electrically connected with a boiler main control room.