Steam mixing, heating and spraying device
By designing a steam mixing and heating injection device, the injection head is connected to the steam injection hole to form a deoxygenated water circulation flow, which solves the problem of incomplete steam heating in the boiler deaerator and improves the temperature uniformity and heat exchange efficiency of the deoxygenated water.
Patent Information
- Application Number
- CN202520626005.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing boiler deaerators suffer from problems such as incomplete heat exchange between steam and water, poor heat transfer efficiency, and incomplete deoxygenation, which affect the quality of feedwater.
A steam mixing and heating injection device is designed, including a first housing and a second housing, with steam injection holes and mixing injection holes provided, and connected to the steam injection holes through an injection head to form a deoxygenated water circulation flow. The design of the injection head enhances the mixing of steam and deoxygenated water and the injection pressure, and the combination of connecting ribs and guide ribs optimizes the intake and discharge of deoxygenated water.
This resulted in more uniform deoxygenated water temperature, more thorough heat exchange between steam and water, improved heat transfer efficiency, enhanced deoxygenation effect, and reduced temperature stratification differences.
Smart Images
Figure CN223940082U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steam mixing and heating technology, and in particular to a steam mixing and heating injection device. Background Technology
[0002] The main function of a boiler deaerator is to heat boiler feedwater with steam to remove oxygen and other non-condensable gases, ensuring feedwater quality, preventing metal corrosion in the feedwater system, and ensuring the safe and stable operation of the boiler system. However, current boiler deaerator technologies typically use pipes to directly introduce steam into the deaerator, leading to problems such as incomplete steam-water heat exchange, poor heat transfer efficiency, and incomplete deaeration during the deaeration process, thus affecting feedwater quality. Utility Model Content
[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a steam mixing heating injection device that can make the deoxygenated water temperature more uniform, the heat exchange between steam and water more complete, and improve the heat transfer efficiency.
[0004] On one hand, the steam mixing and heating injection device provided by this utility model includes: a first housing, including a steam inlet, a plurality of steam injection holes and a steam channel, wherein the steam channel connects the steam inlet and each of the steam injection holes; a second housing, sleeved on the end of the first housing near the steam injection holes, wherein the second housing and the first housing together define a deoxygenated water flow channel, the second housing including a deoxygenated water inlet and a plurality of mixing injection holes, wherein the deoxygenated water flow channel connects the deoxygenated water inlet and each of the mixing injection holes, and the plurality of mixing injection holes are arranged in a one-to-one correspondence with the plurality of steam injection holes.
[0005] In some embodiments, the steam mixing and heating injection device further includes: a plurality of injection heads disposed in the first housing, wherein the plurality of injection heads are disposed in a one-to-one correspondence with the plurality of steam injection holes, each injection head includes a first end and a second end, the first end and the second end are connected, the first end of the injection head is connected to the corresponding steam injection hole, and the second end of the injection head extends into the corresponding steam injection hole.
[0006] In some embodiments, there is a gap between the injection head and the corresponding injection hole.
[0007] In some embodiments, the inner diameter of the first end of the nozzle is larger than the inner diameter of the second end of the nozzle.
[0008] In some embodiments, the inner diameter of the nozzle gradually decreases from the first end to the second end.
[0009] In some embodiments, the centerlines of the steam injection orifice, the injection head, and the mixing injection orifice coincide.
[0010] In some embodiments, the steam mixing and heating injection device further includes a plurality of connecting ribs disposed between the first housing and the second housing, the connecting ribs connecting the inner peripheral wall of the second housing and the outer peripheral wall of the first housing, wherein the plurality of connecting ribs are spaced apart along the circumference of the first housing, and the space between two adjacent connecting ribs forms the deoxygenated water inlet.
[0011] In some embodiments, the outer peripheral wall of the first housing is connected to a plurality of flow guide ribs, which are distributed circumferentially along the first housing to guide deoxygenated water to the deoxygenated water inlet.
[0012] In some embodiments, the second housing further includes a drain outlet communicating with the deoxygenated water channel, and a plurality of the mixing injection holes surrounding the drain outlet.
[0013] In some embodiments, the first housing, the second housing, and the nozzle are all made of stainless steel.
[0014] The steam mixing and heating injection device provided by this utility model has the following beneficial effects:
[0015] (1) By using a steam mixing and heating injection device, the deoxygenated water inside the deaerator is mixed with steam before being sprayed out, which realizes that the deoxygenated water inside the deaerator is in a circulating state, reduces the temperature stratification difference, makes the temperature of the deoxygenated water more uniform, and makes the heat exchange between steam and water more sufficient, thus improving the heat transfer efficiency.
[0016] (2) By setting the nozzle and extending the second end of the nozzle into the corresponding steam injection hole, the steam and deoxygenated water can be mixed and sprayed out from the steam injection hole at a greater pressure, which can increase the amount of deoxygenated water in the deaerator, further improve the steam and water heat exchange efficiency, thereby improving the heat exchange efficiency and reducing the temperature stratification difference.
[0017] (3) The gap between the nozzle and the corresponding steam injection hole facilitates the intake of deoxygenated water to be sprayed out at a higher pressure, so that the steam and deoxygenated water are mixed more thoroughly.
[0018] (4) A deoxygenated water inlet is formed by the space between two adjacent connecting ribs, so that multiple connecting ribs form multiple deoxygenated water inlets. The multiple deoxygenated water inlets are spaced apart along the circumference of the first shell, so that deoxygenated water can be drawn in more evenly from the multiple deoxygenated water inlets.
[0019] (5) Multiple guide ribs are connected to the outer peripheral wall of the first shell, which can smoothly guide the deoxygenated water to the deoxygenated water inlet and improve the intake efficiency of the deoxygenated water.
[0020] (6) The second housing includes a drain outlet, which allows the large amount of deoxygenated water that is drawn in to be discharged more smoothly from the deoxygenated water channel, thereby improving the deoxygenated water circulation effect. Attached Figure Description
[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 This is a schematic diagram of the structure of a steam mixing and heating injection device provided in one embodiment of this application;
[0023] Figure 2 This is a cross-sectional schematic diagram of the structure of a steam mixing and heating injection device provided in one embodiment of this application, wherein the cross-sectional lines are omitted;
[0024] Figure 3 This is a cross-sectional schematic diagram of the steam mixing and heating injection device provided in one embodiment of this application, wherein the cross-sectional lines are omitted.
[0025] icon:
[0026] Steam mixing and heating injection device 100; first housing 10; second housing 20; steam inlet 11; steam injection hole 12; steam channel 13; injection head 14; first end 141; second end 142; connecting rib 15; guide rib 16; deoxygenated water inlet 21; mixing injection hole 22; drain outlet 23; deoxygenated water flow channel 20a. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms "a," "the," and "the" as used in the embodiments of this utility model are also intended to include the plural forms unless the context clearly indicates otherwise.
[0029] It should be understood that although the terms first, second, third, etc., may be used to describe the acquisition modules in the embodiments of this utility model, these acquisition modules should not be limited to these terms. These terms are only used to distinguish the acquisition modules from each other.
[0030] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to monitoring." Similarly, depending on the context, the phrases "if determination" or "if monitoring (the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when monitoring (the stated condition or event)," or "in response to monitoring (the stated condition or event)."
[0031] It should be noted that the directional terms such as "upper," "lower," "left," and "right" used in the description of the embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. In addition, in the context, it should also be understood that when it is mentioned that an element is formed "upper" or "lower" of another element, it can not only be formed directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element.
[0032] Reference Figures 1 to 3 The steam mixing and heating injection device 100 provided by this utility model includes a first housing 10 and a second housing 20. The first housing 10 includes a steam inlet 11, a plurality of steam injection holes 12, and a steam channel 13, the steam channel 13 connecting the steam inlet 11 and each steam injection hole 12. The second housing 20 is sleeved on the end of the first housing 10 near the steam injection holes 12. The second housing 20 and the first housing 10 together define a deoxygenated water flow channel 20a. The second housing 20 includes a deoxygenated water inlet 21 and a plurality of mixing injection holes 22, the deoxygenated water flow channel 20a connecting the deoxygenated water inlet 21 and each mixing injection hole 22, and the plurality of mixing injection holes 22 are arranged in a one-to-one correspondence with the plurality of steam injection holes 12.
[0033] In use, the steam mixing and heating injection device 100 is installed inside the deaerator, and the steam inlet 11 is used to connect to the steam pipe. Steam entering from the steam inlet 11 is ejected from each steam injection hole 12 via the steam channel 13, creating a low-pressure zone at the deoxygenated water inlet 21 of the second housing 20. This allows deoxygenated water in the deaerator to be drawn from the deoxygenated water inlet 21 into the deoxygenated water flow channel 20a defined by the second housing 20 and the first housing 10, and finally, the deoxygenated water is ejected from each mixing injection hole 22. Since the multiple mixing injection holes 22 correspond one-to-one with the multiple steam injection holes 12, steam and deoxygenated water are ejected together from the mixing injection holes 22. The curved arrows in the figure indicate the flow direction of deoxygenated water being drawn into the deoxygenated water inlet 21 in the low-pressure zone.
[0034] Therefore, by using the steam mixing and heating injection device 100, the deoxygenated water inside the deaerator is mixed with steam before being sprayed out, thus achieving a circulating state of the deoxygenated water inside the deaerator. This reduces temperature stratification differences, makes the deoxygenated water temperature more uniform, and ensures more complete heat exchange between steam and water, thereby improving heat transfer efficiency.
[0035] The multiple mixing injection holes 22 are arranged in a one-to-one correspondence with the multiple steam injection holes 12, and the center lines of the steam injection holes 12 and the mixing injection holes 22 may coincide. The center line coincidence is not an absolute and perfect coincidence, and manufacturing or installation errors are allowed.
[0036] In some embodiments, the steam mixing and heating injection device 100 further includes a plurality of injection heads 14 disposed in the first housing 10. The plurality of injection heads 14 are disposed in a one-to-one correspondence with a plurality of steam injection holes 12. Each injection head 14 includes a first end 141 and a second end 142. The first end 141 and the second end 142 are connected. The first end 141 of the injection head 14 is connected to the corresponding steam injection hole 12, and the second end 142 of the injection head 14 extends into the corresponding steam injection hole 12.
[0037] By setting the nozzle 14 and extending the second end 142 of the nozzle 14 into the corresponding steam injection hole 12, the steam and deoxygenated water can be mixed and ejected from the steam injection hole 12 at a greater pressure, which can increase the intake of deoxygenated water in the deaerator, further improve the steam-water heat exchange efficiency, thereby improving the heat exchange efficiency and reducing temperature stratification differences.
[0038] In some embodiments, there is a gap between the injection head 14 and the corresponding steam injection hole 12.
[0039] There is a gap between the nozzle 14 and the corresponding steam injection hole 12, which facilitates the intake of deoxygenated water to be sprayed out at a higher pressure, so that the steam and deoxygenated water are mixed more thoroughly.
[0040] In some embodiments, the inner diameter of the first end 141 of the nozzle 14 is larger than the inner diameter of the second end 142 of the nozzle 14.
[0041] This results in a higher steam pressure ejected from the second end 142 of the nozzle 14, further increasing the amount of deoxygenated water drawn into the deaerator.
[0042] In some embodiments, the inner diameter of the nozzle 14 gradually decreases from the first end 141 to the second end 142.
[0043] This results in the nozzle 14 having a trumpet-shaped structure, allowing steam to pass through the nozzle 14 more smoothly and improving efficiency.
[0044] In some embodiments, the center lines of the steam injection orifice 12, the injection head 14, and the mixing injection orifice 22 coincide.
[0045] This makes the flow path of steam and the drawn-in deoxygenated water smoother, improving the mixing efficiency of steam and deoxygenated water.
[0046] In some embodiments, the steam mixing heating injection device 100 further includes a plurality of connecting ribs 15 disposed between the first housing 10 and the second housing 20. The connecting ribs 15 connect the inner peripheral wall of the second housing 20 and the outer peripheral wall of the first housing 10. The plurality of connecting ribs 15 are arranged at intervals along the circumference of the first housing 10, and the space between two adjacent connecting ribs 15 forms a deoxygenated water inlet 21.
[0047] The space between two adjacent connecting ribs 15 forms a deoxygenated water inlet 21, so that multiple connecting ribs 15 form multiple deoxygenated water inlets 21. The multiple deoxygenated water inlets 21 are spaced apart along the circumference of the first housing 10, so that deoxygenated water can be drawn in more evenly from the multiple deoxygenated water inlets 21.
[0048] In some embodiments, a plurality of flow-guiding ribs 16 are connected to the outer peripheral wall of the first housing 10. The plurality of flow-guiding ribs 16 are distributed along the circumference of the first housing 10 and are used to guide deoxygenated water to the deoxygenated water inlet 12. The flow-guiding ribs 16 may be straight or curved, extending along the axial direction of the first housing 10.
[0049] The outer peripheral wall of the first housing 10 is connected with multiple guide ribs 16, which can smoothly guide the deoxygenated water to the deoxygenated water inlet 12 and improve the intake efficiency of the deoxygenated water.
[0050] In some embodiments, the second housing 20 further includes a drain outlet 23, which is in communication with the deoxygenated water channel 20a, and a plurality of mixing spray holes 22 surround the drain outlet 23.
[0051] The drain outlet 23 allows the large amount of deoxygenated water that has been drawn in to be discharged more smoothly from the deoxygenated water channel 20a, thus improving the deoxygenated water circulation effect.
[0052] In some embodiments, the first housing 10, the second housing 20, and the nozzle 14 are all made of stainless steel. This ensures that the steam mixing and heating injection device 100 will not rust or generate iron ions.
[0053] It should be noted that the communication system provided in this embodiment corresponds to the technical solutions that can be used to execute the various method embodiments. Its implementation principle and technical effects are similar to those of the methods, and will not be repeated here.
[0054] The above description is merely a preferred embodiment of this utility model. Those skilled in the art should understand that the scope of disclosure involved in this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalent features without departing from the above-described concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.
Claims
1. A steam mixing and heating injection device, characterized in that, include: The first housing includes a steam inlet, a plurality of steam injection holes, and a steam channel, wherein the steam channel connects the steam inlet and each of the steam injection holes; The second housing is sleeved on the end of the first housing near the steam injection hole. The second housing and the first housing together define a deoxygenated water flow channel. The second housing includes a deoxygenated water inlet and a plurality of mixing injection holes. The deoxygenated water flow channel connects the deoxygenated water inlet and each of the mixing injection holes. The plurality of mixing injection holes are arranged in a one-to-one correspondence with the plurality of steam injection holes.
2. The steam mixing and heating injection device according to claim 1, characterized in that, The steam mixing and heating injection device also includes: Multiple injection heads are disposed in the first housing, and the multiple injection heads are disposed one-to-one with the multiple steam injection holes. Each injection head includes a first end and a second end, the first end and the second end are connected, the first end of the injection head is connected to the corresponding steam injection hole, and the second end of the injection head extends into the corresponding steam injection hole.
3. The steam mixing and heating injection device according to claim 2, characterized in that, There is a gap between the injector and the corresponding steam injection hole.
4. The steam mixing and heating injection device according to claim 2, characterized in that, The inner diameter of the first end of the nozzle is larger than the inner diameter of the second end of the nozzle.
5. The steam mixing and heating injection device according to claim 2, characterized in that, The inner diameter of the nozzle gradually decreases from the first end to the second end.
6. The steam mixing and heating injection device according to claim 2, characterized in that, The centerlines of the steam injection hole, the injection head, and the mixing injection hole coincide.
7. The steam mixing and heating injection device according to any one of claims 1-6, characterized in that, The steam mixing and heating injection device further includes a plurality of connecting ribs disposed between the first housing and the second housing. The connecting ribs connect the inner peripheral wall of the second housing and the outer peripheral wall of the first housing. The plurality of connecting ribs are spaced apart along the circumference of the first housing, and the space between two adjacent connecting ribs forms the deoxygenated water inlet.
8. The steam mixing and heating injection device according to claim 7, characterized in that, The outer peripheral wall of the first housing is connected with a plurality of flow guide ribs, which are distributed along the circumference of the first housing to guide the deoxygenated water to the deoxygenated water inlet.
9. The steam mixing and heating injection device according to any one of claims 1-6, characterized in that, The second housing also includes a drain outlet that communicates with the deoxygenated water channel, and a plurality of the mixing spray holes surround the drain outlet.
10. The steam mixing and heating injection device according to claim 2, characterized in that, The first housing, the second housing, and the nozzle are all made of stainless steel.