Integrated ammonia water and oxygen synchronous adding device

Abstract

The utility model discloses an integrated ammonia water and oxygen synchronous adding device which comprises a dosing tank, a condensed water dosing point, a main water supply dosing point, an oxygen bottle, a pressure reducing valve group, a needle-shaped regulating valve and a plurality of ammonia water adding pipelines, the ammonia water adding pipeline comprises a mixer, an ammonia water adding pump, a pressure release valve and a volume compensator; an outlet of the dosing tank is communicated with a condensed water dosing point and a main water supply dosing point sequentially through the mixer, the ammonia adding water pump, the pressure release valve and the volume compensator, and an outlet of the oxygen bottle is communicated with an inlet of the mixer sequentially through the pressure reducing valve group and the needle-shaped regulating valve. And meanwhile, the problem of pressure fluctuation caused by gaseous oxygenation compressibility is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of water supply and oxygenation, and relates to an integrated ammonia water and oxygen synchronous addition device. Background Art

[0002] The most common methods for oxygenating water include pure oxygen, air, and oxygen-enriched water. Gaseous oxygenation systems have a simple structure and require minimal space. They typically use compressed air or pure oxygen cylinders 13 as the gas source, which are directly injected into the oxygenation point after flow and pressure control. However, because gases are easily compressed, the amount of oxygen injected fluctuates during compression within the oxygenation pipeline when system pressure is disturbed. This makes precise control of the oxygenation level difficult, resulting in unstable control of the water oxygenation level and the potential for excessive oxygen content in the water.

[0003] Liquid oxygenation uses oxygen-enriched water, which is a process that pressurizes gas to a high level. According to Henry's law, the dissolved oxygen concentration in the water rises to a high level, forming oxygen-enriched water. Liquid oxygen-enriched water, as an oxygenation medium, is incompressible. When system pressure fluctuations cause pressure changes at the oxygenation point, the nearly incompressible nature of the liquid ensures a relatively stable oxygenation rate at the oxygenation point, a higher stability than gaseous oxygenation. However, a disadvantage of liquid oxygenation is that the preparation of the oxygen-enriched water requires high-pressure vessels to ensure a relatively high dissolved oxygen concentration. Furthermore, compared to gaseous oxygenation equipment, liquid oxygenation requires additional water pumps, high-pressure vessels for preparing the oxygen-enriched water, water source pipelines, instrumentation, cables, and control systems, resulting in high modification costs and a large footprint.

[0004] Current oxygenation technology lacks a method that can avoid the disadvantages of pressure fluctuation caused by the compressibility of gaseous oxygenation, while having the advantages of the incompressibility of liquid oxygenation but without the need for high-pressure oxygen-enriched water preparation containers. Utility Model Content

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an integrated ammonia and oxygen synchronous addition device, which can achieve the synchronous addition of ammonia and oxygen while avoiding the problem of pressure fluctuation caused by the compressibility of gaseous oxygen addition.

[0006] To achieve the above-mentioned purpose, the utility model discloses an integrated ammonia and oxygen synchronous addition device, comprising a dosing box, a condensate dosing point, a main water dosing point, an oxygen cylinder, a pressure reducing valve group, a needle regulating valve and a plurality of ammonia dosing pipelines; the ammonia dosing pipelines include a mixer, an ammonia dosing pump, a pressure relief valve and a volume compensator;

[0007] The outlet of the dosing box is connected to the condensate dosing point and the main water dosing point through the mixer, ammonia water pump, pressure relief valve and volume compensator in sequence, and the outlet of the oxygen cylinder is connected to the inlet of the mixer through the pressure reducing valve group and needle regulating valve in sequence.

[0008] Furthermore, the outlet of the dosing box is connected to the condensate dosing point and the main water dosing point through the inlet isolation valve, mixer, filter, ammonia water pump, pressure relief valve, pressure gauge and volume compensator in sequence.

[0009] Furthermore, the outlet of the dosing box is connected to the condensate dosing point and the main water dosing point through the inlet isolation valve, mixer, filter, ammonia water pump, pressure relief valve, pressure gauge, volume compensator, outlet check valve and outlet isolation valve in sequence.

[0010] Furthermore, the outlet of the oxygen cylinder is connected to the inlet of the mixer via the oxygen supply isolation valve, the pressure reducing valve group, the flow meter, the needle regulating valve and the oxygen addition solenoid valve in sequence.

[0011] Furthermore, the ammonia water adding pump is a 2-row 100% capacity positive displacement pump.

[0012] Furthermore, the mixer is a gas-liquid mixer.

[0013] Furthermore, the pressure relief valve has an online pressure regulating function.

[0014] Furthermore, the volume compensator is used to compensate for the fluctuation of the outlet pressure of the ammonia water pump.

[0015] Furthermore, the pressure reducing valve group is composed of several stages of pressure reducing devices.

[0016] Furthermore, the number of ammonia water adding pipelines is two.

[0017] The utility model has the following beneficial effects:

[0018] During specific operation of the integrated ammonia and oxygen synchronous addition device described in the present invention, under operating conditions with a low oxygen addition amount, the gas-liquid two-phase flow formed by oxygen and ammonia water is pressurized at the outlet of the ammonia water pump, and all the oxygen dissolves into the ammonia water. At this time, the outlet pipe of the ammonia water pump is a single-phase flow, which is consistent with the stability of oxygenation with oxygen-enriched water, ensuring that the stability of the oxygenation pressure and flow is very high, and the oxygen content of the unit water supply is stable; under operating conditions with a high oxygen addition amount, the stability of the two-phase flow at the outlet of the ammonia water pump is also consistent with that of oxygenation with oxygen-enriched water. At the same time, due to the presence of the volume compensator, the stability of the oxygenation pressure and flow is ensured to be very high, the oxygen content of the unit water supply is stable, and the problem of pressure fluctuation caused by the compressibility of gaseous oxygenation is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present invention are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1This is a structural diagram of the utility model.

[0021] Among them, 1 is the dosing box, 2 is the inlet isolation valve, 3 is the mixer, 4 is the filter, 5 is the ammonia water pump, 6 is the pressure relief valve, 7 is the pressure gauge, 8 is the volume compensator, 9 is the outlet check valve, 10 is the outlet isolation valve, 11 is the condensate dosing point, 12 is the main water dosing point, 13 is the oxygen cylinder, 14 is the oxygen supply isolation valve, 15 is the pressure reducing valve group, 16 is the flow meter, 17 is the needle regulating valve, and 18 is the oxygen addition solenoid valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "include" and "comprise" indicate the existence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0024] It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0025] It should be further understood that the term "and / or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. For example, A and / or B may represent: A alone, A and B simultaneously, or B alone. In addition, the character " / " in this specification generally indicates that the associated items are in an "or" relationship.

[0026] It should be understood that although the terms "first," "second," and "third" may be used in embodiments of the present invention to describe preset ranges, the preset ranges should not be limited to these terms. These terms are merely used to distinguish one preset range from another. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0027] The word "if," as used herein, may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes, relative sizes, and positional relationships of the various regions and layers shown in the figures are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0030] refer to Figure 1 The integrated ammonia and oxygen synchronous addition device of the present invention includes a dosing box 1, a condensate dosing point 11, a main water dosing point 12, an oxygen cylinder 13, an oxygen supply isolation valve 14, a pressure reducing valve group 15, a flow meter 16 and a needle regulating valve 17; the ammonia dosing pipeline includes a mixer 3, a filter 4, an ammonia dosing pump 5, a pressure relief valve 6, a pressure gauge 7, a volume compensator 8, an outlet check valve 9, an outlet isolation valve 10 and an oxygen dosing solenoid valve 18;

[0031] The outlet of the dosing box 1 is connected to the condensate dosing point 11 and the main water dosing point 12 through the inlet isolation valve 2, mixer 3, filter 4, ammonia water pump 5, pressure relief valve 6, pressure gauge 7, volume compensator 8, outlet check valve 9 and outlet isolation valve 10 in sequence. The outlet of the oxygen cylinder 13 is connected to the inlet of the mixer 3 through the oxygen supply isolation valve 14, pressure reducing valve group 15, flow meter 16, needle regulating valve 17 and oxygen addition solenoid valve 18 in sequence.

[0032] As an embodiment of the present invention, the ammonia water adding pump 5 is a two-row 100% capacity positive displacement pump with a frequency conversion function, one in normal use and the other in standby.

[0033] As an embodiment of the present invention, the mixer 3 is a gas-liquid mixer. Under normal oxygenation conditions, the downstream pipeline of the mixer 3 is in a gas-liquid two-phase flow state.

[0034] As an embodiment of the present invention, the pressure relief valve 6 has an online pressure regulating function.

[0035] As an embodiment of the present invention, the volume compensator 8 is used to compensate for the fluctuation of the outlet pressure of the ammonia water pump 5 and improve the stability of the pressure.

[0036] As an embodiment of the present invention, the pressure reducing valve group 15 is composed of several stages of pressure reducing devices, which are used to reduce the high-pressure oxygen in the oxygen cylinder 13 to a target pressure.

[0037] The working process of this utility model is:

[0038] 1) During the operation of the unit, since ammonia water needs to be continuously added to adjust the pH of the feed water and condensate, at least one ammonia water adding pump 5 runs continuously to add the ammonia water in the dosing tank 1 to the condensate dosing point 11 and the main feed water dosing point 12.

[0039] 2) The pure oxygen supplied by the oxygen cylinder 13 is reduced in pressure by the pressure reducing valve group 15 and the flow rate is adjusted by the needle regulating valve 17, and then enters the mixer 3 through the oxygen addition solenoid valve 18.

[0040] 3) The pipeline between the mixer 3 and the ammonia water pump 5 is in a gas-liquid two-phase flow state. Since it is upstream of the ammonia water pump 5, it has no effect on the pressure of the unit's oxygenation pipeline.

[0041] 4) Under low oxygenation conditions, the gas-liquid two-phase flow of oxygen and ammonia is pressurized at the outlet of ammonia pump 5, where all the oxygen dissolves into the ammonia. At this point, the outlet pipe of ammonia pump 5 is a single-phase flow. During this operating period, this maintains the same stability as oxygenation with oxygen-enriched water, ensuring high stability in oxygenation pressure and flow, and stable oxygen content in the unit's feedwater.

[0042] 5) Under high oxygenation conditions, the gas-liquid two-phase flow formed by oxygen and ammonia is pressurized at the outlet of ammonia pump 5, with most of the oxygen dissolving into the ammonia. At this point, the outlet pipe of ammonia pump 5 is a two-phase flow. However, since the gaseous oxygen mass fraction is only about one part per hundred thousand (mg / kg), the gaseous oxygen is very small, and the compressibility of the two-phase flow is almost negligible. During this operating period, the two-phase flow at the outlet of ammonia pump 5 exhibits the same stability as oxygenation with oxygen-enriched water. Furthermore, the presence of volume compensator 8 ensures high stability of the oxygenation pressure and flow rate, and a stable oxygen content in the unit's feedwater.

[0043] 6) When the unit's oxygenation conversion requires a higher oxygen content, two ammonia water pumps 5 can be started to improve the oxygenation conversion effect and speed.

[0044] 7) The oxygenation solenoid valve 18 and the ammonia water pump 5 are interlocked with each other. When a certain ammonia water pump 5 is running, the oxygenation solenoid valve 18 of the corresponding column is automatically opened; when a certain ammonia water pump 5 is stopped, the oxygenation solenoid valve 18 of the corresponding column is automatically closed.

[0045] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An integrated ammonia and oxygen simultaneous addition device, characterized in that: It comprises a dosing box (1), a condensate dosing point (11), a main water dosing point (12), an oxygen cylinder (13), a pressure reducing valve group (15), a needle regulating valve (17) and a plurality of ammonia water adding pipelines; the ammonia water adding pipelines comprise a mixer (3), an ammonia water adding pump (5), a pressure relief valve (6) and a volume compensator (8); The outlet of the dosing box (1) is connected to the condensate dosing point (11) and the main water dosing point (12) in sequence through the mixer (3), the ammonia water pump (5), the pressure relief valve (6) and the volume compensator (8), and the outlet of the oxygen cylinder (13) is connected to the inlet of the mixer (3) in sequence through the pressure reducing valve group (15) and the needle regulating valve (17).

2. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The outlet of the dosing box (1) is connected to the condensate dosing point (11) and the main water dosing point (12) through the inlet isolation valve (2), the mixer (3), the filter (4), the ammonia water pump (5), the pressure relief valve (6), the pressure gauge (7) and the volume compensator (8) in sequence.

3. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The outlet of the dosing box (1) is connected to the condensate dosing point (11) and the main water dosing point (12) through the inlet isolation valve (2), the mixer (3), the filter (4), the ammonia water pump (5), the pressure relief valve (6), the pressure gauge (7), the volume compensator (8), the outlet check valve (9) and the outlet isolation valve (10) in sequence.

4. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The outlet of the oxygen cylinder (13) is connected to the inlet of the mixer (3) through the oxygen supply isolation valve (14), the pressure reducing valve group (15), the flow meter (16), the needle regulating valve (17) and the oxygen addition electromagnetic valve (18).

5. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The ammonia water adding pump (5) is a 2-row 100% capacity positive displacement pump.

6. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The mixer (3) is a gas-liquid mixer.

7. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The pressure relief valve (6) has an online pressure regulating function.

8. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The volume compensator (8) is used to compensate for the fluctuation of the outlet pressure of the ammonia water pump (5).

9. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: The pressure reducing valve group (15) is composed of several stages of pressure reducing devices.

10. The integrated ammonia and oxygen simultaneous addition device according to claim 1, characterized in that: There are two ammonia adding pipelines.

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