CN215259766U - Thermal deaerator - Google Patents

Abstract

The utility model discloses a thermal formula oxygen-eliminating device, include: a housing; the drain pipe is arranged at the lower right corner of the shell; the manhole is arranged at the upper left corner of the front side of the shell; the water inlet is arranged at the top end of the shell; the steam inlet is formed in the bottom end of the shell; the water spraying grate is arranged in the middle of the inner cavity of the shell; the heat supplementing net is arranged at the bottom end of the water spraying grate; the PLC controller is arranged at the bottom of the front side of the shell, and the heat supply network is electrically connected with the PLC controller; and the preheating type spraying device is fixedly arranged at the top end of the water inlet and is electrically connected with the PLC. This thermal power formula oxygen-eliminating device, the partial pressure of vapor increases gradually on the surface of water, and the partial pressure of other gases reduces the gas of aquatic gradually and separates out with continuous separation, and the mist is rotatory upwards, sprays the liquid with middle part inner chamber downwards and forms the convection current and form the heat exchange to, can realize the recovery to heat and vapor.

Description

Thermal deaerator

Technical Field

The utility model relates to a deaerator technical field specifically is a heating power formula deaerator.

Background

The deaerator is one of the key equipments of boiler and heat supply system, its main function is to remove oxygen and other gases in the boiler feed water, and ensure the quality of feed water, meanwhile, the deaerator itself is a mixed heater in the feed water heat recovery system, and plays a role in heating feed water and raising the temperature of feed water. In chemical makeup water, a large amount of dissolved gases (such as oxygen and carbon dioxide) are often contained, air in condensed water is not strictly permeated by equipment working under vacuum (such as a condenser, a low-pressure heater operating in a vacuum state, a pipeline fitting and the like), and if no measures are taken, the gases enter a water supply system along with water supply and have great influence on the safe and economic operation of a power plant, so that the gases in the water supply of the boiler are timely removed, the important task of ensuring the safe and economic operation of the power plant is realized, a deaerator is equipment for completing the task, the deaerator is equipment for removing the dissolved gases in the water supply, and the oxygen is the most harmful to the dissolved gases in the water, so the oxygen is removed in the power plant;

current oxygen-eliminating device can be according to the mode of scattering in the deoxidization head can be divided into water film filler formula, trickle dish filler formula, atomizing, spraying filler formula and rotary membrane oxygen-eliminating device etc. but all need complicated structure to realize the deoxidization, area is very big, be not convenient for maintain, and be not convenient for remove, in addition, the gas that current oxygen-eliminating device spent is the mist of oxygen and vapor, take away a large amount of vapor and take away a large amount of heats, the extravagant energy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heating power formula oxygen-eliminating device to at least, solve the problem of prior art volume too big, extravagant energy.

In order to achieve the above object, the utility model provides a following technical scheme: a thermal deaerator, comprising: a housing; the drain pipe is arranged at the lower right corner of the shell; the manhole is arranged at the upper left corner of the front side of the shell; the water inlet is arranged at the top end of the shell; the steam inlet is formed in the bottom end of the shell; the water spraying grate is arranged in the middle of the inner cavity of the shell; the heat supplementing net is arranged at the bottom end of the water spraying grate; the PLC controller is arranged at the bottom of the front side of the shell, and the heat supply network is electrically connected with the PLC controller; the preheating type spraying device is fixedly arranged at the top end of the water inlet and is electrically connected with the PLC; the steam conveying device is fixedly arranged at the bottom end of the steam inlet and is electrically connected with the PLC; the water level control assembly is arranged at the right lower corner of the front side of the shell and is electrically connected with the PLC;

the preheating type spray device includes: the upper end cover is fixedly arranged at the top end of the water inlet; the heat exchange assembly is arranged in the middle of the upper end cover; the spray header is arranged at the bottom end of the heat exchange assembly; the water inlet pipe is arranged at the top end of the heat exchange assembly;

the steam delivery device includes: the lower end cover is fixedly arranged at the bottom end of the steam inlet; the pressurizer is fixedly arranged at the bottom end of the lower end cover and is electrically connected with the PLC; a steam delivery pipe arranged at the left end of the pressurizer; the steam distribution assembly is fixedly arranged at the top end of the lower end cover; the pressurizer compresses high-temperature steam in the steam conveying pipe, and then high-pressure steam is injected into the inner cavity of the shell through the steam distribution assembly.

Preferably, the heat exchange assembly includes: the heat exchange shell is arranged in the middle of the upper end cover, the water inlet pipe is arranged at the top of the heat exchange shell, and the water inlet pipe is communicated with the middle inner cavity of the heat exchange shell; the waste heat recovery cavity is arranged on the outer side of the heat exchange shell along the circumferential direction; the number of the connecting through holes is a plurality, and the connecting through holes are arranged at the bottom of the heat exchange shell along the circumferential direction; the exhaust port is formed in the right side of the top end of the heat exchange shell; and the condenser pipe is fixedly arranged at the top end of the exhaust port and is communicated with the waste heat recovery cavity.

Preferably, the waste heat recovery cavity is spiral.

Preferably, the middle part of the condensation pipe is bent.

Preferably, the steam distribution assembly comprises: the connecting pipe is fixedly arranged at the top end of the lower end cover; the number of the steam distributing pipes is a plurality of, the steam distributing pipes are respectively arranged at the top end of the connecting pipe along the circumferential direction, the plurality of steam distributing pipes are communicated with the connecting pipe, and the steam distributing pipes are gradually inclined upwards from the inner side to the outer side; the steam distribution plate is arranged at the top end of the steam distribution pipe, and the steam distribution pipes are communicated with the inner cavity of the steam distribution plate; the number of the steam injection holes is a plurality of, and the steam injection holes are respectively arranged on the top end of the steam distribution plate along the circumferential direction.

Preferably, the water level control assembly includes: the observation tube is fixedly arranged at the right lower corner of the front side of the shell, and the top end and the bottom end of the observation tube are communicated with the inner cavity of the shell; and the quantity of the water level sensors is two, the two water level sensors are respectively arranged at the top and the bottom of the observation pipe, and the two water level sensors are electrically connected with the PLC.

Preferably, the observation tube is made of transparent material.

Preferably, the water level sensor at the top is positioned below the heat supply network, and the water level sensor at the bottom is positioned above the steam distribution plate.

Preferably, the refill assembly comprises: the liquid distributor is arranged at the top end of the left side of the inner cavity of the shell; the water replenishing pipe is fixedly arranged on the left side of the shell, and one end of the water replenishing pipe is communicated with the liquid distributor; the shower, quantity is a plurality of, from the top down respectively from a left side to the right side set up in the right side of knockout.

Compared with the prior art, the beneficial effects of the utility model are that: the thermal deaerator sprays liquid and vapor through the shower head to carry on the hedging, make it drive out the gas in the spray liquid, the partial pressure of the vapor on the surface of water increases gradually, and the partial pressure of other gas reduces the gas in the water and separates out continuously gradually, when the water is heated to the saturation temperature under the deaerator pressure, the space on the surface of water is full of vapor, the partial pressure of various gas approaches to 0, oxygen and other gas in the water are removed at this moment; carry partial vapor from the inner chamber of alliing oneself with the through-hole and crowding into the waste heat recovery chamber through the unnecessary gas in the shell inner chamber, the mist is rotatory upwards, spray the liquid with the middle part inner chamber is decurrent and form the convection current and form the heat exchange, the mist of high temperature preheats microthermal spray liquid promptly, the mist through the heat exchange passes through the condenser pipe further condensation, vapor in the mist can condense into liquid comdenstion water, and carry out the backward flow, consequently, can realize the recovery to heat and vapor.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front sectional view of the present invention;

FIG. 3 is an enlarged view at A;

FIG. 4 is a schematic view of a heat patch network;

FIG. 5 is a schematic view of a water replenishing shower head structure;

FIG. 6 is a schematic view of a steam distribution assembly;

fig. 7 is a schematic structural view of a preheating type spraying device.

In the figure: 2. the device comprises a shell, 3, a water discharge pipe, 4, a manhole, 5, a water inlet, 6, a water outlet, 7, a preheating type spray device, 71, an upper end cover, 72, a heat exchange assembly, 721, a heat exchange shell, 722, a communication hole, 723, an aligning opening, 724, a condensation pipe, 725, a waste heat recovery cavity, 73, a spray header, 74, a water inlet pipe, 8, a steam conveying device, 81, a lower end cover, 82, a pressurizer, 83, a steam conveying pipe, 84, a steam distribution assembly, 841, a connecting pipe, 842, a gas distribution pipe, 843, a steam distribution disc, 844, a steam spray hole, 9, a water spray grate, 10, a heat supply net, 11, a PLC controller, 12, a water level control assembly, 121, an observation pipe, 122, a water level sensor, 13, a water supply assembly, 131, a distributor, 132, a water supply pipe, 133 and a spray pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a thermal deaerator, comprising: the device comprises a shell 2, a drain pipe 3, a manhole 4, a water inlet 5, a steam inlet 6, a preheating type spraying device 7, a steam conveying device 8, a water spraying grate 9, a heat supplementing net 10, a PLC (programmable logic controller) 11, a water level control assembly 12 and the like, wherein the drain pipe 3 is arranged at the lower right corner of the shell 2, the manhole 4 is arranged at the upper left corner of the front side of the shell 2, the water inlet 5 is arranged at the top end of the shell 2, the steam inlet 6 is arranged at the bottom end of the shell 2, the water spraying grate 9 is arranged in the middle of an inner cavity of the shell 2, the heat supplementing net 10 is arranged at the bottom end of the water spraying grate 9, the PLC 11 is arranged at the bottom of the front side of the shell 2, the heat supplementing net 10 is electrically connected with the PLC 11, the PLC 11 is formed by modularly combining an internal CPU, an instruction and data memory, an input and output unit, a power supply module, a digital simulation unit and the like, and the PLC 11 is stored and executes logic operation, sequential control and timing, Counting, arithmetic operation and other operation instructions, and controlling various types of mechanical equipment or production processes through digital or analog input and output, wherein the preheating type spraying device 7 is fixedly installed at the top end of the water inlet 5 and is electrically connected with the PLC 11, the steam conveying device 8 is fixedly installed at the bottom end of the steam inlet 6 and is electrically connected with the PLC 11, and the water level control assembly 12 is arranged at the right lower corner of the front side of the shell 2 and is electrically connected with the PLC 11;

the preheating type shower device 7 includes: the water inlet structure comprises an upper end cover 71, a heat exchange assembly 72, a spray header 73 and a water inlet pipe 74, wherein the upper end cover 71 is fixedly arranged at the top end of the water inlet 5, the heat exchange assembly 72 is arranged in the middle of the upper end cover 71, the spray header 73 is arranged at the bottom end of the heat exchange assembly 72, and the water inlet pipe 74 is arranged at the top end of the heat exchange assembly 72;

the steam delivery device 8 comprises: the steam distribution device comprises a lower end cover 81, a pressurizer 82, a steam conveying pipe 83 and a steam distribution assembly 84, wherein the lower end cover 81 is fixedly installed at the bottom end of a steam inlet 6, the pressurizer 82 is fixedly installed at the bottom end of the lower end cover 81 and is electrically connected with the PLC 11, the steam conveying pipe 83 is arranged at the left end of the pressurizer 82, the steam distribution assembly 84 is fixedly installed at the top end of the lower end cover 81, high-temperature steam in the steam conveying pipe 83 is compressed by the pressurizer 82, and then the high-pressure steam is injected into an inner cavity of the shell 2 through the steam distribution assembly 84.

Preferably, the heat exchange assembly 72 further comprises: the heat exchanger comprises a heat exchange shell 721, a communicating hole 722, an exhaust port 723, a condenser 724 and a waste heat recovery cavity 725, wherein the heat exchange shell 721 is arranged in the middle of the upper end cover 71, a water inlet pipe 74 is arranged at the top of the heat exchange shell 721, the water inlet pipe 74 is communicated with the middle inner cavity of the heat exchange shell 721, the waste heat recovery cavity 725 is circumferentially arranged outside the heat exchange shell 721, the waste heat recovery cavity 725 is spiral, the communicating holes 722 are arranged at the bottom of the heat exchange shell 721 along the circumferential direction, the exhaust port 723 is arranged at the right side of the top end of the heat exchange shell 721, the condenser 724 is fixedly arranged at the top end of the exhaust port 723, the condenser 724 is communicated with the waste heat recovery cavity 725, and the middle part of the condenser 724 is bent;

specifically, the excess gas in the inner cavity of the housing 2 carries part of the water vapor to be extruded into the inner cavity of the waste heat recovery cavity 725 from the communicating hole 722, the mixed gas rotates upwards to form convection with the downward spraying liquid of the inner cavity in the middle part and form heat exchange, namely, the high-temperature mixed gas preheats the low-temperature spraying liquid, the mixed gas after heat exchange is further condensed through the condensing pipe 724, the water vapor in the mixed gas can be condensed into liquid-state condensed water and flows back, and finally the condensed water can flow back to the inner cavity of the housing 2 again through the waste heat recovery cavity 725 and the communicating hole 722.

Still further, the steam distribution assembly 84 preferably includes: the connecting pipe 841 is fixedly installed at the top end of the lower end cover 81, the steam distribution pipes 842 are provided with a plurality of numbers and are respectively arranged at the top end of the connecting pipe 841 along the circumferential direction, the steam distribution pipes 842 are communicated with the connecting pipe 841, the steam distribution pipes 842 are gradually inclined upwards from the inner side to the outer side, the steam distribution plate 843 is installed at the top end of the steam distribution pipes 842, the steam distribution pipes 842 are communicated with the inner cavity of the steam distribution plate 842, and the steam injection holes 844 are provided with a plurality of numbers and are respectively arranged at the top end of the steam distribution plate 842 along the circumferential direction;

specifically, the steam injection holes 844 introduce steam with stable pressure into the shell 2 to heat the water supply, during the heating process, the partial pressure of the steam on the water surface is gradually increased, the partial pressure of other gases is gradually reduced, and the gases in the water are continuously separated out.

Preferably, the water level control assembly 12 further comprises: the observation tube 121 and the water level sensors 122 are fixedly installed at the right lower corner of the front side of the shell 2, the top end and the bottom end of the observation tube 121 are both communicated with the inner cavity of the shell 2, the observation tube 121 is made of transparent materials, the two water level sensors 122 are arranged at the top and the bottom of the observation tube 121 respectively, the two water level sensors 122 are electrically connected with the PLC 11, the water level sensor 122 at the top is located below the heat supply network 10, and the water level sensor 122 at the bottom is located above the steam distribution plate 853;

specifically, the water in the cavity of the housing 2 is not too much or too little, and the water level range is the range of the two water level sensors 122.

Preferably, the refill unit 13 further includes: the device comprises a liquid distributor 131, a water supplementing pipe 132 and a plurality of spray pipes 133, wherein the liquid distributor 131 is arranged at the top end of the left side of the inner cavity of the shell 2, the water supplementing pipe 132 is fixedly arranged at the left side of the shell 2, one end of the water supplementing pipe 131 is communicated with the liquid distributor 131, and the plurality of spray pipes 133 are respectively arranged at the right side of the liquid distributor 131 from top to bottom from left to right;

specifically, when the water in the inner cavity of the housing 2 is too low, the water needs to be replenished into the inner cavity of the housing 2 from the outside, that is, the water in the water replenishing pipe 132 is filled into the liquid distributor 131 and replenished into the inner cavity of the housing 2 through the shower pipe 133.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

Steam with stable pressure is introduced into the deaerator to heat water supply, in the heating process, the partial pressure of the water vapor on the water surface is gradually increased, the partial pressure of other gases is gradually reduced, the gases in the water are continuously separated out, when the water is heated to the saturation temperature under the pressure of the deaerator, the space on the water surface is completely filled with the water vapor, the partial pressure of various gases tends to 0, and at the moment, oxygen and other gases in the water are removed

In the description of the present invention, it is to be understood that the terms "bottom", "one end", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends" and the like indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated; unless otherwise specifically stated or limited, the terms "snap" and "connect" and "set" and "open" and "electrically connect" and "fixedly connect" are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A thermal deaerator, comprising:

a housing (2);

the drain pipe (3) is arranged at the right lower corner of the shell (2);

the manhole (4) is arranged at the upper left corner of the front side of the shell (2);

the water inlet (5) is arranged at the top end of the shell (2);

the steam inlet (6) is arranged at the bottom end of the shell (2);

the water spraying grate (9) is arranged in the middle of the inner cavity of the shell (2);

the heat supplementing net (10) is arranged at the bottom end of the water spraying grate (9);

the PLC controller (11) is installed at the bottom of the front side of the shell (2), and the heat supply network (10) is electrically connected with the PLC controller (11);

it is characterized by also comprising:

the preheating type spraying device (7) is fixedly arranged at the top end of the water inlet (5) and is electrically connected with the PLC (11);

the steam conveying device (8) is fixedly arranged at the bottom end of the steam inlet (6) and is electrically connected with the PLC (11);

the water level control assembly (12) is arranged at the right lower corner of the front side of the shell (2) and is electrically connected with the PLC (11);

the water replenishing assembly (13) is arranged at the top end of the left side of the inner cavity of the shell (2);

the preheating type spray device (7) comprises:

the upper end cover (71) is fixedly arranged at the top end of the water inlet (5);

the heat exchange assembly (72) is arranged in the middle of the upper end cover (71);

a shower head (73) disposed at a bottom end of the heat exchange assembly (72);

a water inlet pipe (74) arranged at the top end of the heat exchange assembly (72);

the steam delivery device (8) comprises:

the lower end cover (81) is fixedly arranged at the bottom end of the steam inlet (6);

the pressurizer (82) is fixedly installed at the bottom end of the lower end cover (81) and is electrically connected with the PLC (11);

a steam delivery pipe (83) provided at the left end of the pressurizer (82);

the steam distribution assembly (84) is fixedly arranged at the top end of the lower end cover (81);

wherein the pressurizer (82) compresses high-temperature steam in the steam delivery pipe (83), and high-pressure steam is injected into the inner cavity of the shell (2) by the steam distribution assembly (84).

2. A thermal deaerator as defined in claim 1, wherein: the heat exchange assembly (72) includes:

the heat exchange shell (721) is arranged in the middle of the upper end cover (71), the water inlet pipe (74) is arranged at the top of the heat exchange shell (721), and the water inlet pipe (74) is communicated with the middle inner cavity of the heat exchange shell (721);

a waste heat recovery cavity (725) arranged outside the heat exchange shell (721) along the circumferential direction;

the number of the connecting holes (722) is a plurality, and the connecting holes are arranged at the bottom of the heat exchange shell (721) along the circumferential direction;

an exhaust port (723) which is opened at the right side of the top end of the heat exchange shell (721);

and the condensation pipe (724) is fixedly arranged at the top end of the exhaust port (723), and the condensation pipe (724) is communicated with the waste heat recovery cavity (725).

3. A thermal deaerator as defined in claim 2, wherein: the waste heat recovery cavity (725) is spiral.

4. A thermal deaerator as defined in claim 2, wherein: the middle part of the condensation pipe (724) is bent.

5. A thermal deaerator as defined in claim 1, wherein: the steam distribution assembly (84) includes:

the connecting pipe (841) is fixedly arranged at the top end of the lower end cover (81);

the number of the steam distributing pipes (842) is a plurality, the steam distributing pipes (842) are respectively arranged at the top end of the connecting pipe (841) along the circumferential direction, the steam distributing pipes (842) are communicated with the connecting pipe (841), and the steam distributing pipes (842) gradually incline upwards from the inner side to the outer side;

the steam distribution disc (843) is arranged at the top end of the steam distribution pipe (842), and the steam distribution pipes (842) are communicated with the inner cavity of the steam distribution disc (842);

the number of the steam injection holes (844) is a plurality, and the steam injection holes are respectively arranged at the top end of the steam distribution disc (842) along the circumferential direction.

6. A thermal deaerator as defined in claim 1, wherein: the water level control assembly (12) comprises:

the observation tube (121) is fixedly installed at the right lower corner of the front side of the shell (2), and the top end and the bottom end of the observation tube (121) are communicated with the inner cavity of the shell (2);

the number of the water level sensors (122) is two, the two water level sensors are respectively arranged at the top and the bottom of the observation pipe (121), and the two water level sensors (122) are electrically connected with the PLC (11).

7. A thermal deaerator as defined in claim 6, wherein: the observation tube (121) is made of transparent material.

8. A thermal deaerator as defined in claim 6, wherein: the water level sensor (122) positioned at the top is positioned below the heat supply net (10), and the water level sensor (122) positioned at the bottom is positioned above the steam distribution plate (853).

9. A thermal deaerator as defined in claim 1, wherein: the refill assembly (13) comprises:

the liquid distributor (131) is arranged at the top end of the left side of the inner cavity of the shell (2);

the water replenishing pipe (132) is fixedly arranged on the left side of the shell (2), and one end of the water replenishing pipe (131) is communicated with the liquid distributor (131);

the spraying pipes (133) are arranged on the right side of the liquid distributor (131) from top to bottom from left to right.

Images