阅读说明：本技术 一种可移动式树脂床外部冲洗装置及其冲洗方法 (Movable resin bed external flushing device and flushing method thereof ) 是由 杨勇 刘世江 *** 王永军 苏小军 王伟 韩辉 马立 顾汉彬 王君鹏 于 2020-07-14 设计创作，主要内容包括：本发明属于核电站氢冷发电机组定子冷却水处理技术领域,具体涉及一种可移动式树脂床外部冲洗装置及其冲洗方法,包括：贮存筒、支架平台、搅拌棒、筒体中部隔板、中部卸载料口、排水管、溢流管线、上部取样管线和防尘盖；支架平台上放置贮存筒,所述搅拌棒设置在贮存筒内；贮存筒上部设有防尘盖,贮存筒外壁上端一侧连接上部取样管线,贮存筒外壁上端另一侧连接溢流管线；所述贮存筒外壁中部设置中部卸载料口,所述中部卸载料口连接卸料管线,卸料管线上设置有中部卸载阀。(The invention belongs to the technical field of nuclear power station hydrogen-cooled generator set stator cooling water treatment, and particularly relates to a movable resin bed external flushing device and a flushing method thereof, wherein the flushing method comprises the following steps: the device comprises a storage barrel, a support platform, a stirring rod, a barrel middle partition plate, a middle unloading port, a drain pipe, an overflow pipeline, an upper sampling pipeline and a dust cover; a storage cylinder is arranged on the support platform, and the stirring rod is arranged in the storage cylinder; the upper part of the storage cylinder is provided with a dustproof cover, one side of the upper end of the outer wall of the storage cylinder is connected with an upper sampling pipeline, and the other side of the upper end of the outer wall of the storage cylinder is connected with an overflow pipeline; the middle part of the outer wall of the storage barrel is provided with a middle unloading port, the middle unloading port is connected with an unloading pipeline, and a middle unloading valve is arranged on the unloading pipeline.)

1. A movable resin bed external flushing device, comprising: the device comprises a storage barrel (14), a support platform (16), a stirring rod (17), a barrel middle partition plate (10), a middle unloading port (6), a drain pipe, an overflow pipeline (11), an upper sampling pipeline and a dust cover (13);

A storage cylinder (14) is placed on the support platform (16), and the stirring rod (17) is arranged in the storage cylinder (14); the upper part of the storage cylinder (14) is provided with a dustproof cover (13),

one side of the upper end of the outer wall of the storage cylinder (14) is connected with an upper sampling pipeline, and the other side of the upper end of the outer wall of the storage cylinder (14) is connected with an overflow pipeline (11); a middle unloading port (6) is arranged in the middle of the outer wall of the storage barrel (14), the middle unloading port (6) is connected with an unloading pipeline, and a middle unloading valve (1) is arranged on the unloading pipeline;

a middle partition plate (10) of the cylinder body is obliquely arranged in the storage cylinder (14), and a filtering unit A (7), a filtering unit B (8) and a filtering unit C (9) are sequentially arranged on the middle partition plate (10) of the cylinder body from left to right;

the central part of the bottom of the storage cylinder (14) is provided with a drain pipe, one end of the drain pipe is connected with a quick joint (2), and the drain pipe is sequentially provided with a bottom drain valve (5), an adjusting valve (4) and a backwashing valve (3) from left to right.

2. A portable resin bed external flushing apparatus as set forth in claim 1, wherein: a graduated scale (12) is also arranged at the upper part of the outer wall of the storage cylinder (14); the storage barrel (14) is integrally of a hollow transparent cylinder structure, so that the floating condition of resin in the barrel can be observed conveniently, and the backwashing flow can be controlled conveniently through a graduated scale; the top of the storage cylinder (14) is of an open structure, and the bottom of the storage cylinder (14) is of a conical structure.

3. A portable resin bed external flushing apparatus as set forth in claim 2, wherein: the graduated scale (12) is divided into five graduated grids which are respectively named from bottom to top: the scale comprises a first scale grid, a second scale grid, a third scale grid, a fourth scale grid and a fifth scale grid.

4. A portable resin bed external flushing apparatus as set forth in claim 1, wherein: the overflow pipeline (11) is arranged at the height of the fourth grid position of the graduated scale on the outer wall of the storage cylinder (14); an upper sampling valve (15) is also arranged on the upper sampling pipeline.

5. An external flushing device for a movable resin bed as claimed in claim 4, wherein: the middle partition plate (10) of the cylinder body is obliquely arranged in the storage cylinder (14) at an inclination angle of 15 degrees; the middle partition plate (10) of the cylinder body divides the interior of the storage cylinder (14) into an upper cavity and a lower cavity, and the upper cavity of the storage cylinder (14) is arranged from the upper part of the middle partition plate (10) of the cylinder body to the top of the storage cylinder; the lower chamber of the storage cylinder (14) is arranged from the lower part of the middle partition plate (10) of the cylinder body to the bottom of the storage cylinder.

6. An external flushing device for a movable resin bed as claimed in claim 5, wherein: the middle unloading port (6) is arranged at a position close to the filtering unit A (7); the middle unloading port (6) is arranged on the outer wall of the barrel and has the same height as the lowest position of the middle partition plate (10) of the barrel; the middle unloading port (6) and the unloading pipeline are also obliquely arranged at 15 degrees on the outer wall of the storage cylinder (4).

7. An external flushing device for a movable resin bed as claimed in claim 6, wherein: stirring rod (17) structure is the hollow circular cylinder structure, resin internal resistance is little when stirring rod (17) inserts the resin stirring, is convenient for resin stirring and impurity separation.

8. A portable resin bed external flushing apparatus as set forth in claim 1, wherein: the lower part of the support platform (16) is provided with a plurality of pulley blocks, so that the support platform (16) can move conveniently, wherein the pulley blocks are provided with stopping devices.

9. A method for flushing an external flushing device of a movable resin bed according to claims 1 to 8, characterized in that it comprises the following steps:

the method comprises the following steps: cleaning the interior of the storage cylinder body, and introducing resin to be cleaned into the storage cylinder;

step two: introducing resin to be cleaned, and cleaning the resin;

step three: unloading the cleaned resin;

step four: cleaning the storage cylinder, and storing the reset flushing device for subsequent use.

10. A method for flushing an external flushing device of a portable resin bed as set forth in claim 9, wherein the first step further comprises: the quick connector (2) is inserted into a drain pipe at the bottom of the storage cylinder;

Closing the bottom drain valve (5), closing the middle unloading valve (1) and closing the upper sampling valve (15); opening a backwashing valve (3), opening an adjusting valve (4), and introducing desalted water into the storage cylinder through a quick connector (2) to fill the desalted water to the fourth grid position of the graduated scale;

when the demineralized water fills to the fourth check position of scale, close backwash valve (3), close governing valve (4), open bottom drain valve (5), open middle part uninstallation valve (1), make demineralized water discharge from bottom drain pipe and middle part uninstallation material mouth with store the inside clean back of washing of barrel, close drain valve (5) again, close middle part uninstallation valve (1).

11. A method for flushing an external flushing device of a portable resin bed as set forth in claim 9, wherein the second step further comprises:

step 2.1: pouring resin to be cleaned from the top opening of the storage cylinder (14), wherein the resin filling amount is calculated from the position of the upper surface of the middle partition plate (10) of the cylinder to the position of a second grid of the graduated scale;

step 2.2: opening a backwashing valve (3), adjusting the opening degree of an adjusting valve (4), introducing desalted water into a lower cavity in a storage cylinder from a quick connector (2), enabling the desalted water to pass through a filtering unit A (7), a filtering unit B (8) and a filtering unit C (9) on a middle partition plate (10) of the cylinder and then enter an upper cavity of the storage cylinder, enabling resin to be supported and float in water by the desalted water, observing the flow rate of the desalted water, controlling the opening degree of the adjusting valve (4) to enable the upper surface of the resin to reach a third lattice position of a graduated scale, and when the water level of the desalted water in the cylinder reaches a fourth lattice position of the graduated scale, slowly stirring the resin along the clockwise direction through a stirring rod (17) to ensure that high-quality resin at a cleaning position in the cylinder does not overflow; and (3) keeping the demineralized water to continuously flush the resin at the optimal flow rate in the stirring process, ensuring that the crushed resin and impurities with small weight float on the water surface, opening the backwashing valve (3), slowly opening the large regulating valve (4) to lift the water surface of the flushing water containing the crushed resin and the impurities to the position of the overflow pipeline, and flowing out the resin and the impurities through the overflow pipeline (11).

Step 2.3: after repeated stirring and washing, when the resin washing desalted water is observed visually to be clear and the water surface has no broken water, the conductivity value of the washing desalted water is measured from a sampling valve (15) by a hand-held conductivity meter, and the conductivity value is less than 1.5 mu s/cm²When the resin cleaning is finished, the backwashing valve (3) is closed, the regulating valve (4) is closed, and the bottom drain valve (5) is opened to drain the cleaning water.

12. A method for flushing an external flushing device of a portable resin bed as set forth in claim 9, wherein the third step further comprises: opening middle part uninstallation valve (1), because barrel middle part baffle (10), middle part uninstallation mouth (6) and the pipeline of unloading are 15 oblique angle settings, the resin after the washing is accomplished is flushed through discharge opening (6) from middle part uninstallation valve (1) and is discharged and pours into in the interim receiving container, transports to in generator stator cooling water system ion exchange bed.

13. A method for flushing an external flushing device of a portable resin bed as set forth in claim 9, wherein the fourth step further comprises:

after the resin cleaned in the third step is emptied from the storage cylinder (14), closing the bottom drain valve (5), closing the middle unloading valve (1), opening the backwashing valve (3), opening the regulating valve (4), pouring desalted water into the storage cylinder from the quick connector (2), closing the backwashing valve (3), closing the regulating valve (4), opening the upper sampling valve (15), opening the bottom drain valve (5), opening the middle unloading valve (1), flushing the open storage cylinder to be clean, and then emptying the desalted water;

After the desalted water is emptied, the quick connector (2) is disassembled, the middle unloading valve (1) is closed, the bottom drain valve (5) is closed, the upper sampling valve (15) is closed, the stirring rod (17) is placed in the storage cylinder, the dustproof cover (13) is covered, and the device is moved to a warehouse for storage for the next use.

Technical Field

The invention belongs to the technical field of nuclear power station hydrogen-cooled generator set stator cooling water treatment, and particularly relates to a movable resin bed external flushing device and a flushing method thereof.

Background

Two TBB-1000-2-two-time-by-3 hydrogen-cooled generator sets in one stage of engineering of a certain nuclear power plant adopt a water-hydrogen cooling mode, and stator water of the nuclear power plant is mainly used for cooling a stator winding. The stator cooling water system comprises a cation bed loaded with cation resin, and a mixed ion bed loaded with cation resin and anion resin, wherein each ion bed has a volume of about 80L. When the power of the unit is running, when the conductance of the system cooling water is increased, the mixed type ion filter (30L of cation resin, H-type; 30L of anion resin, OH-type) is put into operation, and when the P-N value of the system cooling water is reduced, the cation type ion filter (60L of cation resin, Na + type) is put into operation; over time, the ion exchange resin may fail and need to be replaced with a new resin.

In addition, because a large amount of broken resin particles and impurities can be mixed in the resin newly produced by a resin manufacturer, unclean resin is directly filled into an ion filter of a stator cooling water system, and the purification effect of the stator cooling water of the generator is influenced certainly. In addition, because the existing stator cooling water system is not designed with an online flushing function, the newly installed resin needs to be pretreated outside the bed, generally, the new resin contains a large amount of broken resin particles and impurities, and needs to be flushed by using a large amount of water.

It is therefore desirable to devise a mobile device for out-of-bed flushing of resin that ameliorates the above-mentioned deficiencies of the prior art.

Disclosure of Invention

The invention aims to design a movable resin bed external flushing device and a flushing method thereof, which are used for effectively solving the technical problems that the resin bed unavailability time is prolonged and the safe and stable operation of a generator set is easily influenced because internal condensate water is used for flushing the resin for multiple times and in stages in the prior art.

The technical scheme of the invention is as follows:

a portable resin bed external flushing device, comprising: the device comprises a storage barrel, a support platform, a stirring rod, a barrel middle partition plate, a middle unloading port, a drain pipe, an overflow pipeline, an upper sampling pipeline and a dust cover;

a storage cylinder is placed on the support platform, and the stirring rod is arranged in the storage cylinder; the upper part of the storage cylinder is provided with a dustproof cover,

one side of the upper end of the outer wall of the storage cylinder is connected with an upper sampling pipeline, and the other side of the upper end of the outer wall of the storage cylinder is connected with an overflow pipeline; the middle part of the outer wall of the storage barrel is provided with a middle unloading port, the middle unloading port is connected with an unloading pipeline, and a middle unloading valve is arranged on the unloading pipeline;

a middle partition plate of the cylinder body is obliquely arranged in the storage cylinder, and a filtering unit A, a filtering unit B and a filtering unit C are sequentially arranged on the middle partition plate of the cylinder body from left to right;

the central part of the bottom of the storage cylinder is provided with a drain pipe, one end of the drain pipe is connected with a quick joint, and the drain pipe is sequentially provided with a bottom drain valve, a regulating valve and a backwashing valve from left to right.

A graduated scale is arranged on the upper part of the outer wall of the storage cylinder; the storage barrel is integrally of a hollow transparent cylinder structure, so that the floating condition of resin in the barrel can be observed conveniently, and the backwashing flow can be controlled conveniently through a graduated scale; the top of the storage cylinder is of an open structure, and the bottom of the storage cylinder is of a conical structure.

Five scales are uniformly distributed on the graduated scale, and the scales are named from bottom to top respectively: the scale comprises a first scale grid, a second scale grid, a third scale grid, a fourth scale grid and a fifth scale grid; each grid position represents a height of 10 cm.

The overflow pipeline is arranged at the height of the fourth grid position of the graduated scale on the outer wall of the storage cylinder; an upper sampling valve is further arranged on the upper sampling pipeline.

The middle partition plate of the cylinder body is obliquely arranged in the storage cylinder, and the inclination angle of the middle partition plate is 15 degrees; the middle partition plate of the cylinder body divides the interior of the storage cylinder into an upper cavity and a lower cavity, and the upper part of the middle partition plate of the cylinder body from the top of the storage cylinder is the upper cavity of the storage cylinder; the lower chamber of the storage cylinder is arranged from the lower part of the middle partition plate of the cylinder body to the bottom of the storage cylinder.

The middle unloading port is arranged at a position close to the filtering unit A; the middle unloading port is arranged on the outer wall of the barrel and has the same height as the lowest position of the middle partition plate of the barrel; the middle unloading port and the unloading pipeline are also obliquely arranged at 15 degrees on the outer wall of the storage cylinder.

The stirring rod structure is the hollow circular cylinder structure, resin internal resistance is little when the stirring rod inserts the resin stirring, is convenient for resin stirring and impurity separation.

The lower part of the support platform is provided with a plurality of pulley blocks, so that the support platform can move conveniently, wherein the pulley blocks are provided with stopping devices.

A method of flushing a portable resin bed external flushing device as described above, comprising the steps of:

the method comprises the following steps: cleaning the interior of the storage cylinder body, and introducing resin to be cleaned into the storage cylinder body;

step two: introducing resin to be cleaned, and cleaning the resin;

step three: unloading the cleaned resin;

step four: cleaning the storage cylinder, and storing the reset flushing device for subsequent use.

The first step further comprises: inserting the quick connector on a drain pipe at the bottom of the storage cylinder;

closing the bottom drain valve, closing the middle unloading valve and closing the upper sampling valve; opening a backwashing valve, opening an adjusting valve, and introducing demineralized water into the storage cylinder through a quick connector to enable the demineralized water to be filled to the fourth grid position of the graduated scale;

when the demineralized water is filled to the fourth grid position of the graduated scale, the backwashing valve is closed, the regulating valve is closed, the bottom drain valve is opened, the middle unloading valve is opened, the demineralized water is discharged from the bottom drain pipe and the middle unloading port to completely flush the inside of the storage barrel, then the drain valve is closed, and the middle unloading valve is closed.

The second step further comprises:

the method comprises the following steps: pouring resin to be cleaned from the top opening of the storage cylinder, wherein the resin filling amount is calculated from the position of the upper surface of the partition plate in the middle of the cylinder to the position of a second grid of the graduated scale;

the method comprises the following steps: opening a backwashing valve, adjusting the opening degree of an adjusting valve, introducing desalted water into a lower cavity in a storage barrel from a quick connector, enabling the desalted water to pass through a filter unit A, a filter unit B and a filter unit C on a partition plate in the middle of the barrel and then enter an upper cavity of the storage barrel, enabling resin to be supported and floated in water by the desalted water, observing the flow rate of the desalted water, controlling the opening degree of the adjusting valve to enable the upper surface of the resin to reach the third lattice position of a graduated scale, and when the water level of the desalted water in the barrel reaches the fourth lattice position of the graduated scale, slowly stirring the resin in a clockwise direction through a stirring rod to ensure that high-quality resin at a cleaning position in the; and in the stirring process, the demineralized water is kept to continuously flush the resin at the optimal flow rate, the broken resin and impurities with small weight are ensured to float on the water surface, the backwashing valve is opened, the regulating valve is slowly opened to raise the water surface of the flushing water containing the broken resin and the impurities to the position of the overflow pipeline, and the resin and the impurities flow out through the overflow pipeline.

The method comprises the following steps: after repeated stirring and washing, when the resin washing desalted water is observed visually to be clear and the water surface has no broken water, the conductivity value of the washing desalted water is measured from the sampling valve by using a handheld conductivity meter, and the conductivity value is less than 1.5 mu s/cm ²And closing the backwashing valve, closing the regulating valve, opening a drain valve at the bottom to discharge washing water, and finishing resin washing.

The third step further comprises: and opening the middle unloading valve, wherein the middle partition plate of the cylinder, the middle unloading port and the unloading pipeline are all arranged at an oblique angle of 15 degrees, and the cleaned resin is flushed out from the middle unloading valve 1 through the unloading port, poured into a temporary receiving container and transferred to an ion exchange bed of a stator cooling water system of the generator.

The fourth step further comprises:

after the resin cleaned in the third step is emptied from the storage cylinder, closing the bottom drain valve, closing the middle unloading valve, opening the backwashing valve, opening the regulating valve, pouring desalted water into the storage cylinder from the quick connector, closing the backwashing valve, closing the regulating valve, opening the upper sampling valve, opening the bottom drain valve, opening the middle unloading valve, flushing the open storage cylinder to clean, and emptying desalted water;

after the demineralized water is emptied, the quick connector is disassembled, the middle unloading valve is closed, the bottom drain valve is closed, the upper sampling valve is closed, the stirring rod is placed in the storage cylinder, the dustproof cover is covered, and the device is moved to a warehouse for storage for the next use.

The invention has the beneficial effects that:

the invention provides a movable resin bed external flushing device and a flushing method thereof, which can realize flushing and pretreatment of ion filter resin of a stator cooling water system; the device carries out the bed outside preliminary treatment to new resin, does not have the influence to the system of operation during washing, need not to mend a large amount of condensate water to stator cooling water system, and stator cooling water system each item index parameter can not appear undulantly.

The invention provides a movable resin bed external flushing device and a flushing method thereof, which can save a large amount of time, and the flow of flushing water outside a bed is larger than that of flushing water in a system, so that the time is greatly shortened; compared with practical operation experience, the time can be saved by more than 10 times.

The invention effectively shortens the unavailable time of the ion exchange bed, and if the in-bed washing in the prior art is selected, the ion exchange bed can not be used to reduce the conductance in the resin washing process.

The washing device is not connected with a stator cooling water system, a quick connector is designed in the device and is connected with demineralized water for washing, the structural design of the device is compact, the device is provided with the movable support, and the device is flexible and convenient to use.

The transparent barrel is arranged, so that the floating condition of the resin in the barrel can be observed conveniently, and the backwashing flow can be controlled conveniently by observing the graduated scale.

According to the resin bed external flushing device, the middle partition plate of the filtering unit is obliquely installed at 15 degrees, and the middle unloading port and the unloading pipeline are also obliquely arranged, so that the unloading and discharging of resin are facilitated, and the pretreated new resin is not easy to remain in the barrel.

The device is provided with the dustproof cover, so that the open cylinder can be covered to prevent foreign matters from entering in the static resin washing process or the equipment storage process. The hollow stirring rod is arranged in the device, the resistance inside the inserted resin is small, the stirring of the resin is convenient, and the broken resin and impurities are easily separated.

Drawings

FIG. 1 is a schematic diagram of an external flushing device for a movable resin bed according to the present invention;

wherein: 1-a central unloading valve; 2-a quick coupling; 3-a backwash valve; 4-adjusting the valve; 5-bottom drain valve; 6-unloading a material port in the middle; 7-filtration unit a; 8-filtration unit B; 9-filtration unit C; 10-a middle partition plate of the cylinder body; 11-an overflow line; 12-a graduated scale; 13-dust cover; 14-a storage cylinder; 15-upper sampling valve; 16-a scaffold platform; 17-stirring rod.

Detailed Description

The invention will be further described with reference to the following figures and examples:

when the movable resin bed external flushing device is used, the movable resin bed external flushing device is firstly moved to a region close to the desalting water pipeline.

By the method, a large amount of broken resin and impurities are washed and discharged, and the new resin is subjected to pretreatment before operation, so that the washing time of the new resin after being put into a system is reduced, the influence on the water quality of the operating system is greatly reduced, and the water quality requirement of the system is ensured.