Pure water oxygen removal replacement tank

Abstract

The utility model provides a kind of pure water oxygen removal replacement tank, belong to pure water oxygen removal equipment technical field.The utility model discloses the tank body includes outer shell and inner shell, outer shell and inner shell are set up and top surface and bottom surface are flush, interlayer is formed between outer shell and inner shell, the top surface of inner shell is provided with multiple nitrogen gas inlets, the top surface of interlayer is provided with multiple outer exhaust gas outlets respectively with one end of multiple cooling coil connection, the other end is respectively connected with multiple exhaust gas inlets, pure water coil one end passes through the top surface of inner shell setting, the other end is equipped with atomizing nozzle, the sidewall bottom of inner shell is provided with pure water outlet, pure water outlet penetrates outer shell and is sealingly connected with outer shell, the sidewall of outer shell is provided with cooling water inlet and cooling water outlet.The utility model can efficiently remove oxygen and save energy and reduce consumption, and structure optimization is carried out, and applicability is stronger.

Description

Technical Field

[0001] This utility model relates to a pure water deoxygenation replacement tank, belonging to the technical field of pure water deoxygenation equipment. Background Technology

[0002] In industries such as power generation and chemicals, the oxygen content of pure water is subject to extremely strict requirements. Dissolved oxygen in the water can cause corrosion of equipment and pipelines, thus affecting product quality. Existing pure water deoxygenation equipment suffers from problems such as low deoxygenation efficiency, high energy consumption, complex structure, and difficulty in achieving continuous and stable operation. For example, some equipment uses thermal deoxygenation, which consumes a large amount of heat energy; in other equipment, insufficient gas-liquid mixing during the deoxygenation process leads to poor deoxygenation results. Therefore, there is an urgent need for a structurally optimized, highly efficient, and energy-saving pure water deoxygenation device to meet the industrial production demand for high-purity deoxygenated water. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and to provide a pure water deoxygenation replacement tank.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A pure water deoxygenation replacement tank includes a tank body comprising an outer shell and an inner shell, the outer and inner shells being nested together with their top and bottom surfaces flush, forming a sandwich between them. The top surface of the inner shell has multiple nitrogen inlets, and the top surface of the sandwich has multiple exhaust gas outlets, each connected to one end of a cooling coil, which is disposed within the sandwich. The side wall of the inner shell has multiple exhaust gas inlets, and the other end of each cooling coil is connected to one of these inlets. One end of a pure water coil passes through the top surface of the inner shell and is equipped with a valve. The other end of the pure water coil is equipped with an atomizing nozzle positioned above and inside the inner shell. The bottom of the side wall of the inner shell has a pure water outlet that extends through and is sealed to the outer shell. The side wall of the outer shell has a cooling water inlet and a cooling water outlet, with the outlet located above the cooling water inlet.

[0006] Preferably, the top surface of the inner shell is provided with a viewing light mounting hole, a breathing valve mounting hole, and a manhole.

[0007] Preferably, there are three exhaust gas outlets, which are arranged along the circumferential direction of the top surface of the interlayer and are designated as exhaust gas outlet one, exhaust gas outlet two, and exhaust gas outlet three.

[0008] Preferably, there are four nitrogen inlets, which are arranged along the circumferential direction of the top surface of the inner shell and are respectively nitrogen inlet one, nitrogen inlet two, nitrogen inlet three and nitrogen inlet four.

[0009] Preferably, the side wall of the outer shell is provided with a magnetic level gauge mounting hole one and a magnetic level gauge mounting hole two, with the magnetic level gauge mounting hole two located above the magnetic level gauge mounting hole one.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. High-efficiency deoxygenation: This invention atomizes pure water through an atomizing nozzle, which greatly increases the contact area between nitrogen and water, significantly improving oxygen replacement efficiency. Compared with traditional equipment, the deoxygenation efficiency is increased by more than 50%.

[0012] 2. Energy saving and consumption reduction: This utility model uses cooling water to condense the gas-water mixture, so that the water vapor flows back and reduces water waste; at the same time, the reasonable nitrogen circulation and the installation of a breather valve to replenish nitrogen or exhaust gas in the tank can control the pressure in the tank, reduce gas consumption, and reduce operating costs by 40%.

[0013] 3. Structural optimization: This utility model integrates multiple functional components into one unit, and achieves continuous workflow through reasonable layout, reducing the equipment footprint; the installation of sight glass and magnetic level gauge facilitates real-time monitoring of equipment operation status, and the manhole design facilitates equipment maintenance, improving equipment reliability and service life.

[0014] 4. Strong applicability: This utility model can adjust the pure water flow rate through valves to flexibly control the deoxygenation treatment capacity according to actual production needs; when used in series with multiple stages, it can further improve the deoxygenation effect and meet the needs of pure water deoxygenation in different industrial scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic cross-sectional view of the pure water deoxygenation replacement tank of this utility model. Figure 1 .

[0016] Figure 2 This is a schematic cross-sectional view of the pure water deoxygenation replacement tank of this utility model. Figure 2 .

[0017] Figure 3 This is a top view of the pure water deoxygenation replacement tank of this utility model.

[0018] In the attached diagram, the following labels represent different gas outlets: 1 (exhaust gas outlet 1), 2 (exhaust gas outlet 2), 3 (exhaust gas outlet 3), 4 (cooling coil), 5 (nitrogen inlet 1), 6 (nitrogen inlet 2), 7 (nitrogen inlet 3), 8 (nitrogen inlet 4), 9 (pure water outlet), 10 (cooling water inlet), 11 (cooling water outlet), 12 (atomizing nozzle), 13 (sight light mounting hole), 14 (magnetic level gauge mounting hole 1), 15 (magnetic level gauge mounting hole 2), 16 (breathing valve mounting hole), 17 (exhaust gas inlet), 18 (cooling water), 19 (pure water coil), 20 (valve), 21 (manhole), 22 (tank body), 23 (outer shell), and 24 (inner shell). Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings: This embodiment is implemented based on the technical solution of the present invention and provides detailed implementation methods, but the protection scope of the present invention is not limited to the following embodiments.

[0020] like Figure 1 As shown, the pure water deoxygenation replacement tank involved in this embodiment includes a tank body 22, which is provided with multiple functional interfaces and components. The tank body 22 includes an outer shell 23 and an inner shell 24. The outer shell 23 and the inner shell 24 are coaxially arranged and have the same top surface and the same bottom surface. An interlayer is formed between the outer shell 23 and the inner shell 24.

[0021] Gas inlet and outlet: The top surface of the interlayer is provided with multiple exhaust gas outlets, specifically three outlets arranged circumferentially as exhaust gas outlet 1, exhaust gas outlet 2, and exhaust gas outlet 3, used to discharge treated gas; the side wall of the inner shell 24 is provided with multiple exhaust gas inlets 17, used to discharge pressurized gas generated by the influx of nitrogen and pure water into the tank; such as Figure 3 As shown, the top surface of the inner shell 24 is provided with multiple nitrogen inlets. There are four nitrogen inlets, which are arranged in a circumferential direction as nitrogen inlet 1 5, nitrogen inlet 2 6, nitrogen inlet 3 7 and nitrogen inlet 4 8, respectively, for filling the tank with nitrogen required for replacement.

[0022] Liquid inlet / outlet: such as Figure 2As shown, the inner shell 24 has a pure water outlet 9 on its side wall. The pure water outlet 9 extends out of the outer shell 23 and is sealed to the outer shell 23. The outer shell 23 has a cooling water inlet 10 and a cooling water outlet 11 on its side wall. The cooling water outlet 11 is located above the cooling water inlet 10. Pure water outlet 9 is connected to a downstream treatment tank or collection tank via a connecting pipe. A drain pump is installed on the connecting pipe. Pure water outlet 9 is used to pressurize the replaced pure water and send it to the downstream treatment tank or collection tank. Cooling water inlet 10 and cooling water outlet 11 are used to replace the cooling water 18 in the interlayer of tank body 22. Pure water coil 19 is installed through the top surface of inner shell 24. A valve 20 is installed at the upper end of pure water coil 19. The lower end of pure water coil 19 is connected to the inside of inner shell 24 and is fixedly installed with atomizing nozzle 12. Pure water coil 19 and valve 20 cooperate to realize pure water flow control and distribution in the tank. After passing through pure water coil 19, the pressurized pure water is atomized and sprayed into the inside of inner shell 24 by atomizing nozzle 12. In this embodiment, atomizing nozzle 12 is selected as AAZ fine atomizing nozzle, which is a purchased part and is capable of pressurization. Auxiliary components: Multiple cooling coils 4 are installed in the interlayer, and multiple exhaust gas outlets are connected to one end of the multiple cooling coils 4 respectively. The other end of the multiple cooling coils 4 is connected to multiple exhaust gas inlets 17 respectively, for condensing the exhaust gas mixture; the atomizing nozzle 12 realizes pure water atomization and increases the contact area with nitrogen; the sight glass mounting hole 13 is used to install a sight glass to observe the water atomization in the tank; the magnetic level gauge mounting hole one 14 and magnetic level gauge mounting hole two 15 are used to install magnetic level gauges to realize the monitoring of the liquid level in the tank and control the start and stop of the collection pump; the magnetic level gauge has electrodes that can detect the upper and lower limit signals. The magnetic level gauge used in this specific embodiment is the HV208TP PTFE-lined magnetic level gauge, which is a purchased part. When the liquid level changes, the magnetic float level gauge converts the detected liquid level signal into an electrical signal. The electrical signal is transmitted to the signal input terminal of the programmable logic controller (PLC) via a cable. After receiving the electrical signal from the magnetic float level gauge, the PLC signal input terminal processes the signal according to the preset logic program. When the liquid level reaches the preset upper or lower limit, the PLC signal output terminal sends a corresponding control command to the signal input terminal of the collection pump circuit. The control command controls the relay to start or stop the collection pump. The collection pump starts when the upper limit of the liquid level is reached; the collection pump stops when the lower limit is reached. The inlet of the collection pump is connected to the pure water outlet 9.

[0023] The breather valve mounting hole 16 is used to install a breather valve, which is a three-way breather valve. The two opposite ports are the air outlet and the air inlet, respectively. The air inlet is connected to a nitrogen gas source. The port on the vertical wall is connected to the inner shell 24. The breather valve can control the pressure inside the tank. When the collecting pump starts, the liquid level in the tank drops. The asynchronous water and air intake speeds may cause negative pressure inside the tank. Opening the air inlet of the breather valve can replenish nitrogen to balance the negative pressure. When the collecting pump stops, the exhaust gas inlet 17 is blocked, or other parts are blocked, positive pressure may occur inside the tank. Opening the exhaust gas outlet can release the gas and control the pressure inside the tank. The manhole 21 facilitates tank cleaning or equipment maintenance.

[0024] The working method of the pure water deoxygenation replacement tank in this specific embodiment is as follows:

[0025] Nitrogen inlet and pure water atomization: Before starting the pure water deoxygenation tank, high-purity nitrogen is introduced into the tank to purge air and establish an inert gas environment, preventing external oxygen from interfering with the replacement effect. Then, nitrogen is introduced into the tank through nitrogen inlet 5, nitrogen inlet 6, nitrogen inlet 7, and nitrogen inlet 8. Simultaneously, the water pump pressurizes the pure water to a set pressure (e.g., 0.3-0.5 MPa). The outlet of the water pump is connected to valve 20. The pure water flow is controlled by valve 20 and delivered to the atomizing nozzle 12 through the pure water coil 19. The water is atomized into micron-sized droplets, which are then sprayed into the inner shell 24 under pressure, ensuring sufficient contact between the nitrogen and the atomized pure water, thus achieving oxygen replacement. The purpose of atomization is to increase the contact area between water and nitrogen, accelerating the transfer of oxygen from water to nitrogen (based on the principle of gas partial pressure).

[0026] Pressure regulation and gas exhaust: The pressurized gas generated inside the inner shell 24 due to the influx of nitrogen and pure water is discharged through the exhaust gas inlet 17. The discharged gas mixture enters the cooling coil 4, where cooling water 18 entering through the cooling water inlet 10 cools the cooling coil 4, causing water vapor to condense and adhere to the wall. The condensed water flows back into the inner shell 24 through the exhaust gas inlet 17, is collected, and then transported to the next-stage replacement tank or collection tank.

[0027] The atomized water droplets mix thoroughly with nitrogen gas. Due to the higher partial pressure of nitrogen, the dissolved oxygen in the water diffuses into the gas phase, achieving an "oxygen-nitrogen" replacement. The replaced gas (containing nitrogen, a small amount of oxygen, and saturated water vapor) flows out from the exhaust outlet at the top of the tank.

[0028] Gas treatment and emission: Exhaust gas enters cooling coil 4, where saturated water vapor is condensed into liquid water (condensate) through heat exchange. After gas-water separation, the remaining gas (mainly nitrogen, containing a small amount of residual oxygen) is collected through exhaust gas outlet 1, exhaust gas outlet 2, and exhaust gas outlet 3. It can be sent to the next stage tank for further treatment and reuse or directly discharged. The condensate flows back to the inner shell 24 and mixes with untreated pure water. The condensate and pure water inside the inner shell 24 are discharged through pure water outlet 9 and a water pump, and can be collected for production. A dissolved oxygen meter is installed at pure water outlet 9 to measure the oxygen content in the water in real time (i.e., "oxygen exchange capacity") to determine the replacement effect.

[0029] Liquid level monitoring and control: The liquid level in the tank is monitored in real time by magnetic level gauges installed in mounting holes 14 and 15. The start and stop of the collection pump are controlled according to the liquid level to ensure the stability of the liquid level inside the inner shell 24. Pressure balance: When the pressure inside the inner shell 24 is too high, the breather valve opens to release the pressure; when the collection pump draws water and causes negative pressure inside the inner shell 24, the breather valve automatically fills in nitrogen to maintain the pressure balance inside the inner shell 24.

[0030] This utility model claims protection for a hardware configuration that does not rely on software implementation; the invention objective can be achieved simply by judging the voltage status of each pin.

[0031] The above description is merely a preferred embodiment of this utility model. These specific embodiments are different implementations based on the overall concept of this utility model, and the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A pure water deoxygenation replacement tank, comprising a tank body (22), characterized in that, The tank (22) includes an outer shell (23) and an inner shell (24). The outer shell (23) and the inner shell (24) are nested together and their top and bottom surfaces are flush. An interlayer is formed between the outer shell (23) and the inner shell (24). The top surface of the inner shell (24) is provided with multiple nitrogen inlets, and the top surface of the interlayer is provided with multiple exhaust gas outlets. The multiple exhaust gas outlets are respectively connected to one end of multiple cooling coils (4). The multiple cooling coils (4) are all located in the interlayer. The side wall of the inner shell (24) is provided with multiple exhaust gas inlets (17), and the other end of the multiple cooling coils (4) is respectively connected to multiple exhaust gas inlets. The inlet (17) is connected, and one end of the pure water coil (19) is set through the top surface of the inner shell (24). A valve (20) is installed at one end of the pure water coil (19), and an atomizing nozzle (12) is installed at the other end of the pure water coil (19). The atomizing nozzle (12) is set inside the inner shell (24) and above. A pure water outlet (9) is set at the bottom of the side wall of the inner shell (24). The pure water outlet (9) passes through the outer shell (23) and is sealed to the outer shell (23). A cooling water inlet (10) and a cooling water outlet (11) are set on the side wall of the outer shell (23). The cooling water outlet (11) is located above the cooling water inlet (10).

2. The pure water deoxygenation replacement tank according to claim 1, characterized in that, The top surface of the inner shell (24) is provided with a viewing light mounting hole (13), a breathing valve mounting hole (16), and a manhole (21).

3. The pure water deoxygenation replacement tank according to claim 1, characterized in that, The number of exhaust gas outlets is three. The three exhaust gas outlets are arranged along the circumferential direction of the top surface of the interlayer and are respectively exhaust gas outlet one (1), exhaust gas outlet two (2) and exhaust gas outlet three (3).

4. The pure water deoxygenation replacement tank according to claim 1, characterized in that, The number of nitrogen inlets is four. The four nitrogen inlets are arranged along the circumferential direction of the top surface of the inner shell (24) and are respectively nitrogen inlet one (5), nitrogen inlet two (6), nitrogen inlet three (7) and nitrogen inlet four (8).

5. The pure water deoxygenation replacement tank according to claim 1, characterized in that, The outer shell (23) has a magnetic level gauge mounting hole 1 (14) and a magnetic level gauge mounting hole 2 (15) on its side wall. The magnetic level gauge mounting hole 2 (15) is located above the magnetic level gauge mounting hole 1 (14).

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