A nuclear power plant reactor pool decontaminant, a configuration method and a frothing device

Abstract

The present application relates to the technical field of nuclear facility radioactive chemical decontamination, and particularly relates to a nuclear power plant reactor pool decontaminant, a configuration method and a foaming device, wherein the nuclear power plant reactor pool decontaminant comprises 0.5-6 parts of alkyl polyglycoside, 0.2-4 parts of ethanolamine, 0.1-1 part of polyacrylic acid, 0.5-2 parts of diethylenetriamine pentaacetic acid, 1-3 parts of xanthan gum and 86.0-98.7 parts of water, and the xanthan gum is used as a foam stabilizer to stabilize the foam generated by the alkyl polyglycoside. The stabilizing effect makes the foam not easy to break during use, thereby prolonging the cleaning time, improving the cleaning effect, avoiding the possible adverse effects on the environment or equipment by the formula selection, improving the safety, and making the foam generated by the foaming net more delicate, thereby improving the liquid carrying capacity of the foam and improving the decontamination effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radiochemistry decontamination technology of nuclear facilities, and particularly relates to a decontaminant for a reactor pool of a nuclear power plant, a configuration method and a foaming device. BACKGROUND

[0002] Nuclear power belongs to clean energy and has the characteristics of stability, high efficiency and scalability. The pressurized water reactor (PWR) has the advantages of compact structure, small volume, high power density, deep average burnup, no easy overflow of radioactive fission products, good power self-stabilizing and self-regulating characteristics, safety and reliability, etc., and becomes the main reactor type for new nuclear power plants in China.

[0003] In fact, the radioactive nuclides existing in the bottom and side wall of the reactor pool of the PWR nuclear power plant are mainly activated corrosion products, which exist in the form of particulate oxides, and a small amount of nuclides exist in the form of colloids. The decontamination effect is limited by relying solely on the bonding effect of the foam.

[0004] In order to improve the power generation of the PWR nuclear power unit, the nuclear power plant strives to optimize the overhaul time of the unit. In order to reduce the radiation dose of the unit maintenance personnel, the nuclear power plant needs to decontaminate the equipment before maintenance. How to realize efficient and effective decontamination of the equipment and ensure the safety of the equipment materials has become one of the concerns of the nuclear power plant. The reactor pool decontamination is the main work of the overhaul of the PWR nuclear power plant. At present, high-pressure water flushing and manual wiping are mainly used for pool decontamination in China, which limits the decontamination effect, and the Cl, S and P elements in the decontaminant corrode the pool. At the same time, the foam gun makes the gas import larger when spraying foam, resulting in unrefined bubbles. SUMMARY

[0005] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, the abstract and the title. Such simplifications or omissions cannot be used to limit the scope of the present application.

[0006] In view of the above-mentioned problem of limited decontamination effect by using high-pressure water flushing and manual wiping for pool decontamination, the present application is proposed.

[0007] Therefore, one of the purposes of the present application is to provide a decontaminant for a reactor pool of a nuclear power plant.

[0008] To solve the above technical problems, the present application provides the following technical solutions: 0.5-6 parts of alkyl glycoside, 0.2-4 parts of ethanolamine, 0.1-1 part of polyacrylic acid, 0.5-2 parts of diethylene triamine pentaacetic acid, 1-3 parts of xanthan gum and 86.0-98.7 parts of water are included.

[0009] The alkyl glycosides, ethanolamine, polyacrylic acid, diethylenetriaminepentaacetic acid, and xanthan gum contained no F, Cl, or S elements.

[0010] As a preferred embodiment of the decontamination agent for the reactor pool of the nuclear power plant described in this invention, wherein: the alkyl glycoside is a foaming agent, ethanolamine is a pH adjuster, polyacrylic acid and diethylenetriaminepentaacetic acid are dispersants, and xanthan gum is a foam stabilizer.

[0011] The beneficial effects of the nuclear power plant reactor pool decontaminant described in this invention are as follows: This nuclear power plant reactor pool decontaminant, through carefully selected components using alkyl glycosides, achieves a combination of multiple functions. First, using alkyl glycosides as foaming agents, it can generate a large amount of stable foam. This foam has excellent adsorption capacity, effectively adsorbing and carrying away dirt and impurities from the pool surface. Second, ethanolamine, as a pH adjuster, can maintain the pH value of the pool water within a suitable range, preventing corrosion problems caused by pH imbalance. Polyacrylic acid and diethylenetriaminepentaacetic acid, as dispersants, play an important role. They can disperse dirt particles in the water, preventing these particles from forming sediment or adhering to the pool wall. This makes the cleaning process more thorough and effectively removes various dirt from the pool. Xanthan gum, as a foam stabilizer, can stabilize the foam generated by alkyl glycosides. This stabilizing effect makes the foam less prone to breakage during use, thereby extending the cleaning process time and improving the cleaning effect.

[0012] In actual use, there is a problem that the detergent contains Cl, S, and P elements, which corrode the pool.

[0013] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a method for preparing a decontaminant for a nuclear power plant reactor pool, comprising the above-mentioned decontaminant for a nuclear power plant reactor pool, and further comprising adding diethylenetriaminepentaacetic acid to ultrapure water, adding ethanolamine at a mass ratio of 1:1, and stirring for 2 to 5 minutes to completely dissolve the diethylenetriaminepentaacetic acid;

[0014] Add polyacrylic acid to the aqueous solution and stir for 1-2 minutes until the polyacrylic acid is completely dissolved.

[0015] Add alkyl glycosides to the aqueous solution and stir slowly until the alkyl glycosides are completely dissolved.

[0016] Ethanolamine is added to the aqueous solution to adjust the pH value. After the pH value is adjusted, the detergent is foamed using a foam gun for cleaning.

[0017] As a preferred embodiment of the method for preparing a decontaminant for a nuclear power plant reactor pool according to the present invention, the pH value of the decontaminant is between 9.0 and 10.5.

[0018] As a preferred embodiment of the decontaminant preparation method for nuclear power plant reactor pools of the present invention, the foaming agent, foam stabilizer and dispersant are mixed in a ratio of 3g / L:2g / L:2g / L.

[0019] The beneficial effects of the decontaminant preparation method for nuclear power plant reactor pools described in this invention are as follows: This invention contains alkyl glycosides, ethanolamine, polyacrylic acid, diethylenetriaminepentaacetic acid, and xanthan gum. All components of the decontaminant are free of F, Cl, and S elements. This formulation selection avoids potential adverse effects on the environment or equipment, improves safety, and the optimal formulation ratio of foaming agent, foam stabilizer, and dispersant is 3g / L: 2g / L: 2g / L.

[0020] In actual use, there is still a problem that the foam gun causes a large amount of gas to be introduced when spraying foam, resulting in bubbles that are not fine.

[0021] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a foaming device for decontaminant in a nuclear power plant reactor pool, including the above-mentioned method for preparing decontaminant in a nuclear power plant reactor pool, and further including an inlet component, including a handle and an opening and closing component disposed on the side wall of the handle, a housing is installed at the top of the handle, and a closing component for introducing gas and decontaminant is installed inside the housing.

[0022] The dispensing component includes a mixing element disposed inside the housing for increasing the fineness of detergent foam. The end of the mixing element is fitted with a push rod for inserting it into the housing. The side wall of the push rod is fitted with a threaded cap, and the end of the threaded cap is fitted with a foam dispensing conduit.

[0023] As a preferred embodiment of the decontaminant foaming device for nuclear power plant reactor pools of the present invention, the opening and closing component includes a switch disposed on the side wall of the handle, the switch being sleeved on a fixed shaft on the inner wall of the housing, and a push plate being installed at the top of the switch, a fixed plate being installed on the side wall of the push plate, the top of the fixed plate being connected to the housing, and the housing being slidably connected to the handle.

[0024] As a preferred embodiment of the decontaminant foaming device for nuclear power plant reactor pools of the present invention, the closure includes an inlet pipe disposed on the inner wall of the shell, one end of the inlet pipe extending through the shell to the outside and connected to an air valve, and a gas flow meter is disposed between the air valve and the inlet pipe.

[0025] As a preferred embodiment of the decontaminant foaming device for the reactor pool of a nuclear power plant according to the present invention, the closure further includes a sliding block disposed on the side wall of the inlet pipe, the end of the sliding block is provided with a telescopic spring sleeved on the side wall of the inlet pipe, the side wall of the inlet pipe is provided with a first sealing block, one side of the first sealing block is provided with a second sealing block, the side wall of the second sealing block is provided with a third sealing block, and both the second and third sealing blocks are sleeved on the side wall of the inlet pipe. At the same time, the inlet pipe before the second sealing block is hollow, and the one after the second sealing block is solid. The side wall of the second sealing block is provided with an air outlet, wherein the first, second, and third sealing blocks are all matched with limit rings provided on the inner wall of the shell.

[0026] An input pipe is installed at the bottom of the housing, and the bottom end of the input pipe is connected to a glass float liquid flow meter. The end of the glass float liquid flow meter away from the input pipe is connected to a diaphragm pump.

[0027] As a preferred embodiment of the decontaminant foaming device for nuclear power plant reactor pool of the present invention, the mixing component includes a limiting sleeve disposed inside the shell, a rubber ring disposed on the outer wall of the limiting sleeve, a water wheel disposed inside the limiting sleeve in a sliding connection, a fixing groove disposed inside the water wheel, and a foaming net installed at one end of the limiting sleeve.

[0028] The beneficial effects of the decontaminant foaming device for nuclear power plant reactor pools described in this invention are as follows: By opening the closure with a hand handle, both gas and decontaminant are introduced into the foam gun. Then, the mixing component in the foam gun effectively mixes the gas and liquid, reducing the size of the bubbles and making the foam produced by the foaming net finer, thereby improving the liquid carrying capacity of the foam and enhancing the decontamination effect. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 This is a schematic diagram of the overall foaming device.

[0031] Figure 2 This is a schematic diagram of the disassembled structure of the foaming device.

[0032] Figure 3 This is a schematic diagram of the internal structure of the foaming device.

[0033] Figure 4This is a schematic diagram of the closure structure of the foaming device.

[0034] Figure 5 This is a schematic diagram of the disassembled structure of the closure component of the bubbling device.

[0035] Figure 6 for Figure 3 Enlarged view of point A in the image.

[0036] Figure 7 This is a schematic diagram of the foaming device.

[0037] Figure 8 The graph shows the effect of detergent pH on the foaming ratio of a compound solution containing alkyl glycosides, xanthan gum, and polyacrylic acid.

[0038] Figure 9 The graph shows the effect of detergent pH on the liquid carrying capacity of a compound solution containing alkyl glycosides, xanthan gum, and polyacrylic acid.

[0039] Figure 10 This graph shows the change in liquid-carrying capacity of foam over time after foaming with imported detergents and this product's detergent.

[0040] Figure 11 The graph shows the effect of sodium glycolate concentration in detergent on the amount of liquid carried by foam.

[0041] Figure 12 The graph shows the effect of xanthan gum concentration in detergent on the foaming ratio of the solution.

[0042] Figure 13 The graph shows the effect of xanthan gum concentration in detergents on the amount of liquid carried by foam.

[0043] Figure label:

[0044] 100. Inlet assembly; 101. Handle; 102. Opening and closing element; 102a. Switch; 102b. Fixed shaft; 102c. Push plate; 102d. Fixed plate; 103. Housing; 104. Closing element; 104a. Inlet pipe; 104b. Air valve; 104c. Gas flow meter; 104d. Sliding block; 104e. Telescopic spring; 104f. First sealing block; 104g. Second sealing block; 104h. Third sealing block; 104i. Air outlet; 104j. Limiting ring; 104k. Inlet pipe; 104l. Glass float liquid flow meter; 104m. Diaphragm pump;

[0045] 200. Outlet component; 201. Mixing component; 202. Insert rod; 203. Threaded cap; 204. Conduit; 201a. Limiting sleeve; 201b. Rubber ring; 201c. Water wheel; 201d. Fixing groove; 201f. Bubble net. Detailed Implementation

[0046] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0048] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0049] The alkyl glycosides used in this invention are 50% solutions, xanthan gum is USP grade, polyacrylic acid has an average molecular weight of MW~5000, and diethylenetriaminepentaacetic acid is 98%, all of which are produced by Shanghai Maclean Biochemical Technology Co., Ltd., while ethanolamine is analytical grade and produced by Tianjin Damao Chemical Reagent Factory.

[0050] Example 1

[0051] This embodiment provides a decontaminant for nuclear power plant reactor pools, specifically:

[0052] 0.5–6 parts alkyl glycoside, 0.2–4 parts ethanolamine, 0.1–1 part polyacrylic acid, 0.5–2 parts diethylenetriaminepentaacetic acid, 1–3 parts xanthan gum, and 86.0–98.7 parts water;

[0053] The alkyl glycosides, ethanolamine, polyacrylic acid, diethylenetriaminepentaacetic acid, and xanthan gum contained no F, Cl, or S elements.

[0054] Example 2

[0055] This embodiment provides a method for preparing a decontaminant for reactor pools in nuclear power plants, specifically as follows:

[0056] 1) Preparation of reactor decontaminant:

[0057] Alkyl glycosides: 3 parts, ethanolamine: 2 parts, polyacrylic acid: 1 part, diethylenetriaminepentaacetic acid: 1 part, xanthan gum: 2 parts, water: 91 parts

[0058] Diethylenetriaminepentaacetic acid (DTA) was added to ultrapure water, and ethanolamine was added at a mass ratio of 1:1. The mixture was stirred for 2–5 minutes to completely dissolve the DTA.

[0059] Add polyacrylic acid to the aqueous solution and stir for 1-2 minutes until the polyacrylic acid is completely dissolved.

[0060] Add alkyl glycosides to the aqueous solution and stir slowly until the alkyl glycosides are completely dissolved.

[0061] The reactor pool decontaminant of this embodiment can be obtained by adding ethanolamine to an aqueous solution to adjust the pH value of the solution.

[0062] Detergent foaming and liquid carrying capacity test

[0063] Effects of xanthan gum on the foaming and liquid carrying properties of foaming liquid

[0064] Single alkyl glycoside solutions are clear, colorless, and highly fluid. Adding xanthan gum to alkyl glycoside solutions significantly thickens them, turning them into white, opaque, viscous colloids. A 3.0 g / L alkyl glycoside solution was mixed with different amounts of xanthan gum to evaluate the effect of xanthan gum on the foaming and foam-stabilizing properties of the alkyl glycoside solution at different pH values. In the experiment, the initial foaming solution volume was 10.0 mL. Because the solution viscosity increased after adding xanthan gum, making it difficult to drain from the outlet, the volume of the precipitated solution was directly read in the foaming tube. The volume carried by the foam solution was obtained by calculating the difference between the initial volume and the volume of the eluent.

[0065] Table 1 shows a comparison of the foaming performance test data of the foam liquid system under different xanthan gum concentrations (e.g., ...). Figure 12 and Figure 13 (As shown in Table 5). The experimental results show that, compared to a single alkyl glycoside solution (see Table 5), the foaming ratio of the alkyl glycoside-xanthan gum foam system is significantly reduced (by approximately 80%). With the addition of xanthan gum, the stability of the foam significantly improves within the 0.5-1 hour timeframe. When the concentration of the foam stabilizer is further increased to 2.0 g / L, the stability of the foam is also significantly improved within 2 hours.

[0066] Table 1 shows the foaming performance test data of the alkyl glycoside detergent system under different xanthan gum concentrations.

[0067]

[0068] Table 2 shows the foaming and liquid-carrying properties of the alkyl glycoside-xanthan gum-polyacrylic acid composite solution under different pH conditions. The changes in foaming properties under different pH conditions are as follows: Figure 8 As shown, pH value has no obvious effect on the foaming ratio, but it has a significant impact on the stability and liquid carrying capacity of the foaming liquid. Figure 9 When the solution is acidic (pH 3.39) or strongly alkaline (pH 9.40), the foam lifespan is only maintained within 0.5 hours. When the pH is controlled between 5 and 8, the foam stability and liquid carrying capacity are better.

[0069] Table 2 shows the test data of foaming properties and liquid carrying capacity of alkyl glycoside-xanthan gum-polyacrylic acid compound solutions under different pH conditions.

[0070]

[0071] To further clarify the effect of polyacrylic acid concentration on foaming performance and foam stability, the pH value of the foam solution was adjusted to the range of 5–8 in this experiment. Data on the changes in foaming ratio and foam liquid carrying capacity over time were statistically analyzed, as shown in Table 3. The test results show that the foaming ratio was lowest and the stability was poorest at a polyacrylic acid concentration of 3.0 g / L, with almost all foam collapsing after 1.5 hours. The foaming ratio was highest at a polyacrylic acid concentration of 1.5 g / L, and the foam stability was most outstanding at a concentration of 2.0 g / L. Considering both the foaming ratio and foam stability, the optimal foaming and foam stability of the solution is achieved when the polyacrylic acid concentration is controlled at around 2.0 g / L.

[0072] Table 3 shows the test data of foaming properties and liquid carrying capacity of the compounded solution under different polyacrylic acid concentrations.

[0073]

[0074] Performance comparison with imported products

[0075] The imported foam detergent, invented and produced by the French Atomic Energy Commission, was compared with the detergent developed in this project.

[0076] The self-developed foam detergent product underwent testing for fluoride, chloride, and sulfate ions, as shown in the table below:

[0077]

[0078] The following table shows the tests conducted by the French Atomic Energy Commission on imported detergents containing fluoride, chloride, and sulfate:

[0079]

[0080]

[0081] Comparative Example 1:

[0082] The difference between this comparative example and Example 1 is that polyacrylic acid is replaced with sodium glycolate, specifically:

[0083] Alkyl glycoside: 3 parts, ethanolamine: 2 parts, sodium glycolate: 1 part, diethylenetriaminepentaacetic acid: 1 part, xanthan gum: 2 parts, water: 91 parts

[0084] Effects of sodium glycolate on the foaming and foam stabilizing properties of foam liquid systems

[0085] The changes in foaming ratio and liquid carrying capacity of foam over time were statistically analyzed, as shown in Table 4. Table 4 shows that the concentration of sodium glycolate had no significant effect on the foaming ratio of the foaming liquid system; however, as the concentration of sodium glycolate increased, the liquid carrying capacity of the foaming liquid gradually decreased, and when the concentration of sodium glycolate exceeded 10.0 g / L, the liquid carrying capacity of the foam decreased significantly.

[0086] Table 4 shows the test data of foaming properties and liquid carrying capacity of the compounded solution under different sodium glycolate concentrations.

[0087]

[0088] Figure 11 The changes in liquid carrying capacity of the foam system over time under different sodium glycolate concentrations are shown. It can be seen that the foam exhibits greater liquid carrying capacity and better stability at sodium glycolate concentrations of 5.0 g / L and 10.0 g / L. Therefore, in practical applications, considering only foam stability and taking into account both efficiency and cost reduction, a sodium glycolate concentration of 5.0 g / L is preferable. However, further verification of the foam's detergency is still necessary.

[0089] Comparative Example 2:

[0090] The difference between this comparative example and Example 1 is that the amount of alkyl glycoside added was adjusted, specifically:

[0091] Alkyl glycoside: 1 part, ethanolamine: 2 parts, polyacrylic acid: 1 part, diethylenetriaminepentaacetic acid: 1 part, xanthan gum: 2 parts, water: 92 parts.

[0092] The effect of alkyl glycoside concentration on the foaming and liquid carrying capacity of detergents.

[0093] Using 100ml volumetric flasks, Table 5 shows the preparation of foam cleaning solutions with alkyl glycoside concentrations of 1.0g / L, 2.0g / L, 3.0g / L, 4.0g / L, and 5g / L, respectively, and their pH values ​​were measured. The measured pH values ​​were 9.72, 9.91, 10.01, 10.11, and 10.28, respectively. The alkyl glycoside solutions were alkaline, and the alkalinity gradually increased with increasing concentration.

[0094] When the concentration of alkyl glycoside is in the range of 1.0 g / L to 5.0 g / L, a small amount of solution can produce a lot of foam, and the foam is dense and fine after foaming. However, the foam stability is poor. After the foam stands for 1 hour, the liquid carrying capacity of the foam decreases by about 90%; after the foam stands for 2 hours, the foam almost completely collapses.

[0095] Table 5 shows the test results of foaming performance and liquid carrying capacity of alkyl glycoside solutions of different concentrations.

[0096]

[0097]

[0098] Table 5 shows that when the alkyl glycoside content is one part, the liquid carrying capacity and foaming performance of the foam are not as good as when it is three parts.

[0099] Table 5 Main Instruments and Equipment

[0100]

[0101] Example 3

[0102] Reference Figures 1-7 This is the third embodiment of the present invention. Unlike the above embodiments, this embodiment provides a method for preparing a decontaminant for a nuclear power plant reactor pool. The method includes the above-mentioned decontaminant for a nuclear power plant reactor pool. The gas and liquid are guided to the outlet component 200 through the inlet component 100. The gas and liquid are mixed through the outlet component 200. After mixing, the gas and liquid are foamed by the foaming net 201f to improve the decontamination power.

[0103] Specifically, the inlet component 100 includes a handle 101, an opening and closing member 102 disposed on the side wall of the handle 101, a housing 103 installed at the top of the handle 101, and a closing member 104 for introducing gas and detergent installed inside the housing 103.

[0104] The export component 200 includes a mixing element 201 disposed inside the housing 103 for increasing the fineness of detergent foam. The end of the mixing element 201 is fitted with a push rod 202 for pushing it into the housing 103. A threaded cap 203 is fitted on the side wall of the push rod 202, and a foam export conduit 204 is fitted at the end of the threaded cap 203.

[0105] Furthermore, the opening and closing component 102 includes a switch 102a disposed on the side wall of the handle 101. The switch 102a is sleeved on the fixed shaft 102b on the inner wall of the housing 103, and a push plate 102c is installed on the top of the switch 102a. A fixing plate 102d is installed on the side wall of the push plate 102c. The top of the fixing plate 102d is connected to the housing 103, and the housing 103 and the handle 101 are slidably connected.

[0106] Furthermore, the closure 104 includes an inlet pipe 104a disposed on the inner wall of the housing 103. One end of the inlet pipe 104a extends through the housing 103 to the outside and is connected to the air valve 104b. A gas flow meter 104c is disposed between the air valve 104b and the inlet pipe 104a.

[0107] Furthermore, the closure 104 also includes a sliding block 104d disposed on the side wall of the inlet tube 104a. The end of the sliding block 104d is provided with a telescopic spring 104e sleeved on the side wall of the inlet tube 104a. A first sealing block 104f is disposed on the side wall of the inlet tube 104a. A second sealing block 104g is disposed on one side of the first sealing block 104f. A third sealing block 104h is disposed on the side wall of the second sealing block 104g. Both 104g and the third sealing block 104h are sleeved on the side wall of the inlet pipe 104a. Meanwhile, the inlet pipes before the second sealing block 104g are hollow, while those after the second sealing block 104g are solid. The side wall of the second sealing block 104g is provided with an air outlet 104i. The first sealing block 104f, the second sealing block 104g, and the third sealing block 104h are all matched with a limit ring 104j on the inner wall of the housing 103.

[0108] An input pipe 104k is installed at the bottom of the housing 103. The bottom end of the input pipe 104k is connected to the glass float liquid flow meter 104l. The end of the glass float liquid flow meter 104l away from the input pipe 104k is connected to the diaphragm pump 104m.

[0109] Furthermore, the mixing component 201 includes a limiting sleeve 201a disposed inside the housing 103. A rubber ring 201b is disposed on the outer wall of the limiting sleeve 201a. A water wheel 201c is disposed inside the limiting sleeve 201a and is slidably connected. The water wheel 201c is driven to rotate by the pressure of the water flow, thereby effectively mixing water and gas. A fixing groove 201d is disposed inside the water wheel 201c. The insertion rod 202 is located inside the fixing groove 201d. The diameter of one end of the fixing groove 201d is smaller than that of the insertion rod 202. A bubble net 201f is installed at one end of the limiting sleeve 201a.

[0110] The rest of the structure is the same as in Example 2.

[0111] Operating Procedure: When using this device, the mixing component 201 needs to be connected to the housing 103. First, insert the insertion rod 202 into the fixing groove 201d, then push the water wheel into the housing 103. Next, rotate the threaded cap 203 to apply pressure and limit the mixing component 201 to prevent dislocation during use. Then, connect the gas inlet pipe 104a of the bubble gun to the air conduit. Control the gas flow through the compressed air valve 104b and measure the gas flow through the gas flow meter 104c. Then, connect the input pipe 104k to the detergent solution conduit. The detergent is then pumped into the foam gun via a diaphragm pump and a glass float liquid flow meter 104l. When it is necessary to convert the detergent into foam for cleaning, press the switch 102a. The switch 102a deflects... The push plate 102c rotates, which in turn pushes the fixed plate 102d toward the outlet assembly 200. Since the fixed plate 102d is fixedly connected to the housing 103, the fixed plate 102d moves the housing 103 during its movement, causing the air outlet on the second sealing block 104g to disengage from the limiting ring 104j, thus allowing gas to enter the interior of the housing 103. At the same time, the third sealing block 104h disengages from the limiting ring 104j, allowing the gas and detergent to be guided to the mixing component 201. The pressure of the water flow drives the water wheel 201c to rotate, effectively mixing the water and gas. The mixed detergent is then converted into foam by the foaming net 201f and sprayed into the water tank for cleaning, thus effectively increasing the fineness of the bubbles, improving the liquid carrying capacity, and enhancing the cleaning power.

[0112] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0113] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0114] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0115] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A decontaminant for reactor pools in nuclear power plants, characterized in that: Counted by mass parts, 3 parts alkyl glycoside, 2 parts ethanolamine, 1 part polyacrylic acid, 1 part diethylenetriaminepentaacetic acid, 2 parts xanthan gum, and 91 parts water; The alkyl glycosides, ethanolamine, polyacrylic acid, diethylenetriaminepentaacetic acid, and xanthan gum contained no F, Cl, or S elements.

2. A method for preparing a decontaminant for a nuclear power plant reactor pool, characterized in that: The method for preparing the nuclear power plant reactor pool decontaminant as described in claim 1 further includes, The pH value of the detergent is between 9.0 and 10.5.

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