CN113280324B

CN113280324B - Thermal deaerator for boiler heating system

Info

Publication number: CN113280324B
Application number: CN202110582316.6A
Authority: CN
Inventors: 王志滔
Original assignee: Beijing Shanghe Construction Group Co ltd
Current assignee: Beijing Shanghe Construction Group Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-12-27
Anticipated expiration: 2041-05-27
Also published as: CN113280324A

Abstract

The invention relates to the field of boiler water treatment equipment, and discloses a thermal deaerator for a boiler heating system, which comprises a deaerating water tank, wherein a deaerating head is arranged in the middle of the top end of the deaerating water tank, the bottom end of the deaerating head is communicated with a water falling pipe extending into the deaerating water tank, flow guide tanks are arranged on two sides of the top of an inner cavity of the deaerating water tank, an air inlet groove and a water outlet groove are respectively formed in the top and the bottom of each flow guide tank, transverse flow guide pipes are respectively communicated with the middle parts of the side surfaces of the two flow guide tanks, and one ends of the two transverse flow guide pipes are respectively communicated with a middle flow guide pipe. Through the structural design of the middle shunt tubes at the middle part of the top end of the deoxygenation water tank and the transverse diversion tubes on the two sides and the diversion box, in the deoxygenation process, water vapor is utilized to continue to be in full heating contact with water after preliminary deoxygenation in the transverse diversion tubes, the contact flow of the water and the water vapor is increased, so that the water and the water vapor are in full contact, and the deoxygenation effect is improved.

Description

Thermal deaerator for boiler heating system

Technical Field

The invention relates to the field of boiler water treatment equipment, in particular to a thermal deaerator for a boiler heating system.

Background

The thermal-type deaerator is a device for deoxidizing water in a common boiler water supply system, ensures that the oxygen content of the water in the water supply system is low, prevents the oxidation corrosion of a pipeline in the water supply system, mainly comprises a deaerating water tank and a deaerating head, and deaerates by utilizing the dissolution characteristic of gas in water.

The oxygen removal principle is as follows: let in steam in the deoxidization head, carry out directional heating to the water that flows through, the evaporation capacity of vapor constantly increases, the partial pressure that makes vapor on the liquid surface increases, the partial pressure of other gases constantly reduces, in time discharge after overflowing from the aquatic, when the saturation temperature of water heating to deaerator pressure down, the pressure of vapor will be close the full pressure on the surface of water, the partial pressure of other gases on the surface of water this moment approaches to zero, then dissolve the gas in the aquatic and will be followed the aquatic and escaped and detached.

Because water upwards flows and down at the deoxidization head, although form the water film under the effect of rotating the membrane ware, but rivers are just very fast through the speed people of deoxidization head, make the contact flow of water and vapor shorter easily, thereby make the deoxidization effect insufficient, and the discharge valve that current heating power deoxidization ware set up, need reach certain pressure and just can automatic exhaust gas, and the water of insufficient deoxidization is behind the deoxidization of deoxidization incasement secondary, unnecessary a small amount of oxygen still is detained in the deoxidization water tank, can't in time discharge, lead to the interior oxygen content of follow-up water to increase easily, influence the problem of final deoxidization effect.

Disclosure of Invention

The invention provides a thermal deaerator for a boiler heating system, which has the advantage of good water deaerating effect and solves the technical problems in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: the utility model provides a heating power oxygen-eliminating device for boiler heating system, includes the deoxidization water tank, and the middle part on deoxidization water tank top is equipped with the deoxidization head, and the bottom switch-on of deoxidization head has the pipe in water that extends to in the deoxidization water tank, the both sides at deoxidization water tank inner chamber top all are equipped with the water conservancy diversion case, and the air inlet duct has been seted up respectively to the top and the bottom of water conservancy diversion case, goes out the basin, two the middle part of water conservancy diversion case side does not switch-on have horizontal honeycomb duct, and the one end of two horizontal honeycomb ducts all switches-on has middle shunt tubes, the bottom of pipe in water extends to the inside of middle shunt tubes, the both sides of middle shunt tubes all switch-on have the vapor conveyer pipe that is located two horizontal honeycomb ducts tops, and the top of two vapor conveyer pipes extends to the inside of deoxidization head, is equipped with the vapor induction pipe that leads to into vapor in the deoxidization water tank.

Optionally, the bottom of deoxidization water tank inner chamber is equipped with horizontal flow equalizing pipe, and the inner chamber of horizontal flow equalizing pipe and the one end switch-on of vapor induction pipe, the bottom of horizontal flow equalizing pipe is equipped with the first steam nozzle that a plurality of equidistance were arranged.

Optionally, the middle part on deoxidization water tank inner chamber top is located to middle shunt tubes, and reserves a certain interval between the bottom in middle shunt tubes inner chamber and the top of pipe in the water, the internal diameter of pipe in the water is the same with the internal diameter homogeneous phase of two horizontal honeycomb ducts, and the bottom of pipe in the water is located the below of two horizontal honeycomb ducts.

Optionally, a sealing plug is arranged at the top of the middle flow dividing pipe, the sealing plug is positioned above the interfaces of the two water vapor conveying pipes and the middle flow dividing pipe, and the inner side of the sealing plug is in sealing fit with the outer side of the downpipe.

Optionally, the bottom fixed mounting of water conservancy diversion case has the drain pipe, and the drain pipe is located the outside of basin, the notch has all been seted up to the both sides of drain pipe bottom, the side of deoxidization water tank switches on has the overflow pipe, and the top of overflow pipe is located the below of notch.

Optionally, the fixed cover in inside of flow guide box is equipped with the partition board that seals that is located horizontal honeycomb duct top, and seals the fixed cover in middle part of partition board and be equipped with middle pipe, the top of middle pipe extends the top of sealing the baffle top, and the top of middle pipe keeps the determining deviation with the bottom of sealing the partition board, the bottom switch-on of middle pipe has the second steam nozzle who is located to seal the baffle below.

The invention provides a thermal deaerator for a boiler heating system, which has the following beneficial effects:

1. this a heating power oxygen-eliminating device for boiler heating system, middle shunt tubes and the horizontal honeycomb duct of both sides through deoxidization water tank inner chamber top middle part, the structural design of guide box, carrying out the deoxidization in-process, vapor flows through earlier in horizontal honeycomb duct reentrant deoxidization head, the rivers after the preliminary deoxidization of deoxidization head flow through earlier in horizontal honeycomb duct reentrant deoxidization water tank, thereby utilize vapor to continue to carry out abundant heating contact to the water after preliminary deoxidization in horizontal honeycomb duct, the contact flow of water and vapor has been increased, thereby make water and vapor contact more abundant, the deoxidization effect has been improved.

2. According to the thermal deaerator for the boiler heating system, water vapor and water subjected to preliminary deaerating flow in the transverse flow guide pipe relatively, deaerating is further performed in the transverse flow guide pipe, the deaerating effect is improved, meanwhile, discharged oxygen flows into the deaerating head along with the water vapor and is finally discharged, and the oxygen further removed from the water in the deaerating water tank is discharged without arranging an automatic exhaust valve, so that the problem that the oxygen content in subsequent water is increased due to the fact that redundant oxygen is retained in the deaerating water tank and cannot be discharged in time is solved; compared with the existing thermal deaerator, the deaerator effectively avoids the discharge of water vapor and causes the waste of water vapor and heat resources, thereby reducing the energy consumption and saving the cost.

Drawings

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

FIG. 2 is a schematic view of an intermediate shunt tube of the structure of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of the baffle box of the structure of FIG. 1.

In the figure: 1. a deoxygenated water tank; 2. an oxygen removal head; 201. a downpipe; 3. a transverse flow equalizing pipe; 301. a first steam nozzle; 4. a water vapor introduction pipe; 5. a middle shunt tube; 501. a water vapor delivery pipe; 502. a sealing plug; 6. a transverse flow guide pipe; 7. a flow guide box; 701. sealing the partition plate; 702. an intermediate conduit; 703. a second vapor nozzle; 704. an air inlet groove; 705. a water outlet groove; 8. a drain pipe; 801. a notch; 9. and (4) an overflow pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a thermal deaerator for a boiler heating system, comprising a deaerating water tank 1, a deaerating head 2 is arranged in the middle of the top end of the deaerating water tank 1, a downpipe 201 is connected in the middle of the bottom end of the deaerating head 2, one end of the downpipe 201 far away from the deaerating head 2 extends into the deaerating water tank 1, water to be deaerated is added through a water adding pipe port at the top end of the deaerating head 2 after being heated, water deaerated by the deaerating head 2 flows into the deaerating water tank 1 through the downpipe 201, diversion boxes 7 are fixedly arranged on both sides of the top end of the inner cavity of the deaerating water tank 1, water outlet grooves 705 communicated with the inner cavity of the deaerating water tank 1 are formed in the bottoms of the two diversion boxes 7, a transverse diversion pipe 6 is connected in one side of the two transverse diversion pipes 6 far away from the diversion boxes 7, a middle diversion pipe 5 is fixedly arranged in the middle of the top end of the inner cavity of the deaerating water tank 1, the bottom end of the downpipe 201 extends into the inner cavity of the middle diversion pipe 5, the inner cavity of the downpipe 1, the downpipe 201 has the same inner cavity as the inner cavity of the two transverse diversion pipes 6, the steam inlet pipe 3, the two ends of the two transverse diversion pipes 501, the two transverse diversion pipes are respectively, the two transverse diversion pipes 3, the bottom ends of the two transverse diversion pipes are respectively connected with the steam inlet pipe 3, the steam inlet pipe 501, the steam inlet pipe 3, the two transverse diversion pipes are respectively, the two transverse diversion pipes, the bottom ends of the steam inlet pipe 3, the transverse diversion pipes are respectively, the steam inlet pipe 501, and the steam inlet pipe 501, one end of the steam leading-in pipe 4 is continuously fed with steam, the steam enters the transverse flow equalizing pipe 3 and is sprayed out from the deoxidizing water tank 1 by the first steam nozzle 301, water in the deoxidizing water tank 1 is heated and insulated, meanwhile, the partial pressure of the steam above the water surface in the deoxidizing water tank 1 is always kept in a high state, oxygen in the water in the deoxidizing water tank 1 is further removed, the steam above the deoxidizing water tank 1 and a small amount of discharged water enter the flow guide box 7 through the partition plate 701 at the top of the side surface of the flow guide box 7 along with the continuous feeding of the steam at one end of the steam leading-in pipe 4, meanwhile, hot water which is firstly deoxidized by the deoxidizing head 2 flows into the middle flow dividing pipe 5 through the downpipe 201 and flows into the flow guide box 7 through the two ends of the middle flow dividing pipe 5 respectively by the two transverse flow guide pipes 6, and finally flows into the deoxidizing water tank 1 through the water outlet groove 705, under the limiting condition of the down-flow water quantity in the middle shunt tube 5, the water flow liquid level in the transverse diversion tube 6 is positioned at half of the internal height of the transverse diversion tube 6, when the water vapor in the deoxygenation water tank 1 continuously enters, the water vapor entering the upper part of the diversion box 7 through the air inlet groove 704 flows into the middle shunt tube 5 from the upper half space of the inner cavity of the transverse diversion tube 6, and enters the deoxygenation head 2 through the water vapor conveying tubes 501 at the two sides of the top of the middle shunt tube 5, the water vapor is fully contacted and heated with the water to be deoxygenated in the deoxygenation head 2, the water to be deoxygenated in the deoxygenation head 2 is heated at constant pressure, the evaporation capacity of the water vapor is continuously increased, the partial pressure of the water vapor on the liquid level is increased, the partial pressure of other gases is continuously reduced, the water is timely discharged after escaping from the water, when the water is heated to the saturation temperature under the pressure of the deoxygenator, the pressure of the water vapor is close to the full pressure on the water surface, at this moment, partial pressure of other gases on the water surface approaches to zero, so that the gas dissolved in water can escape from the water and be removed, the water after the preliminary deoxidization of the deoxidization head 2 flows into the middle shunt pipe 5 through the deoxidization head 2, in the process that the water vapor and the water after the preliminary deoxidization flow to the opposite direction in the transverse flow guide pipe 6, the water vapor further directionally heats the water after the preliminary deoxidization in the transverse flow guide pipe 6, the contact flow of the water and the water vapor is improved, so that the water and the water vapor are more fully contacted, further deoxidization is performed in the transverse flow guide pipe 6, when the deoxidization effect is improved, the discharged oxygen flows into the deoxidization head 2 along with the water vapor, and finally discharged, thereby avoiding the retention of redundant oxygen in the deoxidization water tank 1, being incapable of being in time, and causing the problem of oxygen content increase in the subsequent water, and avoiding the need of arranging an automatic exhaust valve to discharge the oxygen further removed from the water in the deoxidization water tank 1.

The top of middle shunt tubes 5 is equipped with sealing plug 502, sealing plug 502 is located the top of two vapor delivery pipe 501 and middle shunt tubes 5 interface, and the inboard of sealing plug 502 is sealed the laminating with the outside of pipe in the water 201, ensure that the vapor that flows to middle shunt tubes 5 through two horizontal honeycomb ducts 6 can flow to deoxidization head 2 in by vapor delivery pipe 501, participate in deoxidization work, avoid vapor to escape in middle shunt tubes 5, influence the vapor flow that gets into in the deoxidization head 2, lead to the problem that preliminary deoxidization efficiency in the deoxidization head 2 reduces.

The bottom fixed mounting of flow guide box 7 has drain pipe 8, and drain pipe 8 is located the outside of basin 705, notch 801 has all been seted up to the both sides of drain pipe 8 bottom, the side of deoxidization water tank 1 switches on there is overflow pipe 9, and the top of overflow pipe 9 is located the below of notch 801, water after the deoxidization is through horizontal honeycomb duct 6, flow guide box 7, drain pipe 8, notch 801 flows in deoxidization water tank 1, when the liquid level risees to the top that does not cross overflow pipe 9 in deoxidization water tank 1, so that go on and turn on the water.

The inside fixed cover of baffle box 7 is equipped with and is located the partition board 701 that seals above horizontal honeycomb duct 6, and the fixed cover in middle part of partition board 701 is equipped with middle pipe 702, the top of middle pipe 702 extends the top of sealing the partition board 701, and the top of middle pipe 702 keeps certain interval with the bottom of sealing the partition board 701, the bottom switch-on of middle pipe 702 has the second steam shower nozzle 703 that is located the below of sealing the partition board 701, seal the inner chamber of baffle box 7 into upper and lower two cavities through sealing the partition board 701, the vapor that gets into in baffle box 7 by air inlet duct 704 gets into through the top of middle pipe 702, and discharge at the bottom inner chamber of baffle box 7 by second steam shower nozzle 703, thereby prevent that vapor from carrying a small amount of steam and escaping, cause the waste, influence the subsequent problem of carrying out the deoxidization work efficiency of vapor.

During the use, the water delivery of treating deoxidization is added by the water filling pipe mouth at deoxidization head 2 top, simultaneously, continuously admit into vapor in one end of vapor induction pipe 4 to horizontal flow equalizing pipe 3, vapor evenly spouts through the first steam nozzle 301 of horizontal flow equalizing pipe 3 bottom, heat preservation to the water heating in deoxidization water tank 1, simultaneously, vapor gets into flow guide box 7 through inlet duct 704 in, and flow in first half cavity looks intermediate shunt tubes 5 of horizontal honeycomb duct 6 and deoxidization head 2, carry out deoxidization work in getting into deoxidization head 2 by vapor conveyer pipe 501, and the water after preliminary deoxidization of deoxidization head 2 flows into intermediate shunt tubes 5 through pipe 201 in the water fall, and flow to the inner chamber of flow guide box 7 from horizontal honeycomb duct 6, vapor is located the top of water in horizontal honeycomb duct 6, further deoxidization, water after the twice deoxidization in deoxidization head 2 and horizontal honeycomb duct 6 finally flows to deoxidization water tank 1 by play basin 705, drain pipe 8, notch 801 deoxidization, can.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

1. The utility model provides a thermal power oxygen-eliminating device for boiler heating system, includes deoxidization water tank (1), and the middle part on deoxidization water tank (1) top is equipped with deoxidization head (2), and the bottom switch-on of deoxidization head (2) has pipe in the water (201) that extends to in deoxidization water tank (1), its characterized in that: both sides at the top of an inner cavity of the deoxygenating water tank (1) are provided with flow guide tanks (7), the top and the bottom of each flow guide tank (7) are respectively provided with an air inlet groove (704) and an water outlet groove (705), the middle parts of the sides of the flow guide tanks (7) are respectively communicated with transverse flow guide pipes (6), one ends of the two transverse flow guide pipes (6) are respectively communicated with a middle flow guide pipe (5), the bottom end of a water falling pipe (201) extends to the inside of the middle flow guide pipe (5), the two sides of the middle flow guide pipe (5) are respectively communicated with steam conveying pipes (501) positioned above the two transverse flow guide pipes (6), the top ends of the two steam conveying pipes (501) extend to the inside of the deoxygenating head (2), and steam inlet pipes (4) communicated with steam are arranged in the deoxygenating water tank (1);

the middle shunt pipe (5) is arranged in the middle of the top end of the inner cavity of the deoxygenation water tank (1), a certain distance is reserved between the bottom of the inner cavity of the middle shunt pipe (5) and the top of the downpipe (201), the inner diameter of the downpipe (201) is identical to the inner diameters of the two transverse flow guide pipes (6), and the bottom end of the downpipe (201) is positioned below the two transverse flow guide pipes (6);

the top of middle shunt tubes (5) is provided with a sealing plug (502), the sealing plug (502) is positioned above the joints of the two water vapor delivery pipes (501) and the middle shunt tubes (5), and the inner side of the sealing plug (502) is in sealing fit with the outer side of the downpipe (201).

2. A thermal deaerator for a boiler heating system, in accordance with claim 1, characterized by: the bottom of deoxidization water tank (1) inner chamber is equipped with horizontal flow equalizing pipe (3), and the inner chamber of horizontal flow equalizing pipe (3) and the one end switch-on of vapor induction pipe (4), the bottom of horizontal flow equalizing pipe (3) is equipped with first steam shower nozzle (301) that a plurality of equidistance were arranged.

3. A thermal deaerator for a boiler heating system, in accordance with claim 1, characterized by: the bottom fixed mounting of water conservancy diversion case (7) has drain pipe (8), and drain pipe (8) are located the outside of basin (705), notch (801) have all been seted up to the both sides of drain pipe (8) bottom, the side of deoxidization water tank (1) is switched on has overflow pipe (9), and the top of overflow pipe (9) is located the below of notch (801).

4. A thermal deaerator for boiler heating systems, in accordance with claim 1, characterized by: the inside fixed cover of baffle box (7) is equipped with and is located a sealed baffle (701) of horizontal honeycomb duct (6) top, and seals the fixed cover in middle part of baffle (701) and be equipped with middle pipe (702), the top of middle pipe (702) extends the top of sealing baffle (701) top, and the top of middle pipe (702) and the bottom of sealing baffle (701) keep a determining deviation, the bottom switch-on of middle pipe (702) has second steam jet (703) that are located a sealed baffle (701) below.