CN220633597U - Nuclear power hydrostatic test auxiliary device - Google Patents

Abstract

The utility model provides a nuclear power hydraulic test auxiliary device, which belongs to the technical field of maintenance of nuclear power plants and comprises the following components: the inside of the barrel body is provided with a steam-water separation device and a baffle plate, and the baffle plate separates an air chamber and a water chamber in the inside of the barrel body; the steam-water separation device is used for separating water vapor in the waste gas, the air outlet end is communicated with the air chamber, and the water outlet end is communicated with the water chamber; the barrel body is provided with an exhaust gas inlet pipe group and an exhaust gas outlet pipe group, the exhaust gas inlet pipe group is communicated with the air inlet end, and the exhaust gas outlet pipe group is communicated with the air chamber. Through set up steam-water separation device in the staving and be arranged in getting into the steam-water separation of waste gas, discharge to the hydroecium in, through the baffle separation, make liquid and the waste gas separation that does not contain steam to make from the exhaust gas outlet nest of tubes exhaust waste gas do not contain moisture, avoid influencing the treatment effect to waste gas, thereby reduce the pollution after the gas emission, make hydrostatic test's exhaust work safe and reliable more.

Description

Nuclear power hydrostatic test auxiliary device

Technical Field

The utility model belongs to the technical field of overhaul of nuclear power plants, and particularly relates to an auxiliary device for a nuclear power hydrostatic test.

Background

The nuclear power plant converts nuclear energy into heat energy to generate steam for a steam turbine, and the steam turbine drives a generator to form a power plant for generating commercial power. Currently, nuclear power plants are generally powered by fission reactions of uranium or plutonium, and need to be periodically reloaded, during which the reactor is stopped, and during which the nuclear power plant performs various maintenance and test operations to ensure the reliability of the various devices.

In service and test work, hydrostatic testing is an important test used to verify the reliability of nuclear power plant vessels. When a radioactive container is inspected, water needs to be filled into the test container, waste gas in the test container is discharged, and then the container is overhauled. In the process of the hydrostatic test, a closed negative pressure exhaust system is required to be erected on site so as to lead radioactive waste gas discharged from the test container to an iodine blower of an air filtering system, and the waste gas is adsorbed and then discharged. When changing the material every time, the container that needs to carry out hydrostatic test has ten more, and negative pressure exhaust system needs the scene to build, and the construction work load is great, and the consuming time is longer, need to throw in a large amount of manpowers and supplies to accomplish at whole hydrostatic test work.

The patent CN216160110U discloses a hydraulic test exhaust water collecting device of a container of a nuclear power station, which comprises a water collecting container, a main pipeline connected with the water collecting container, an alarm assembly, an exhaust assembly and a drainage assembly; the main pipeline is provided with a main control valve, a pressure gauge and a connecting component; the connecting component comprises a connecting pipe and a first needle valve arranged on the connecting pipe; the exhaust assembly comprises an exhaust pipe and an exhaust needle valve; the drainage assembly comprises a drainage pipe and a drainage ball valve. The water collecting device integrates the technical requirements required by the water pressure test of the container of the nuclear power station during the exhaust, solves the problem of single function of the existing exhaust device, and still solves the problems that the exhaust gas discharged from the water pressure test container contains more water vapor, the subsequent treatment effect on the exhaust gas is affected, and the like.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.

Therefore, the utility model provides an auxiliary device for nuclear power hydrostatic test, which comprises: the inside of the barrel body is provided with a steam-water separation device and a baffle plate, and the baffle plate separates an air chamber and a water chamber in the inside of the barrel body; the steam-water separation device is used for separating water vapor in the waste gas, the air outlet end is communicated with the air chamber, and the water outlet end is communicated with the water chamber; the barrel body is provided with an exhaust gas inlet pipe group and an exhaust gas outlet pipe group, the exhaust gas inlet pipe group is communicated with the air inlet end, and the exhaust gas outlet pipe group is communicated with the air chamber.

In addition, the auxiliary device for the nuclear power hydrostatic test in the technical scheme provided by the utility model can also have the following additional technical characteristics:

optionally, the inlet end of the exhaust gas inlet tube set is communicated with the test container, and the outlet end of the exhaust gas outlet tube set is communicated with the exhaust gas treatment device.

Optionally, the exhaust gas inlet pipe group comprises an air inlet pipeline, a first one-way valve and a control valve, wherein the first one-way valve and the control valve are arranged on the air inlet pipeline, and the first one-way valve is positioned at one end of the air inlet pipeline, which is close to the barrel body.

Optionally, be provided with monitoring probe on the inner wall of staving, monitoring probe is located the one end that the hydroecium is close to the baffle, and monitoring probe is connected with the control valve electricity, and monitoring probe is used for monitoring the water level in the hydroecium to send the water level signal that monitors to the control valve.

Optionally, an observation window is arranged on the side wall of the barrel body, and the observation window is used for observing the water level condition in the water chamber.

Optionally, the exhaust gas outlet pipe group comprises an air outlet pipeline and a second one-way valve, the air outlet pipeline penetrates through the barrel body, the second one-way valve is arranged on the air outlet pipeline, and the second one-way valve is positioned in the air chamber.

Optionally, a pressure gauge is arranged on the barrel body and is communicated with the air chamber, and the pressure gauge is used for monitoring the air pressure in the air chamber.

Optionally, a water outlet is arranged at the bottom of the barrel body and is communicated with the water chamber, and the water outlet is used for discharging liquid in the water chamber.

Optionally, a drain valve is arranged on the drain port and used for controlling the drain port.

Optionally, two universal wheels and two locking wheels are further arranged at the bottom of the barrel body.

Compared with the prior art, the auxiliary device for the nuclear power hydraulic test has the beneficial effects that:

the waste gas inlet pipe group and the waste gas outlet pipe group are arranged on the barrel body at the same time, the on-site construction is not needed, the waste gas inlet pipe group and the waste gas outlet pipe group are only needed to be connected to the test container and the filter system respectively, the waste gas inlet pipe group and the waste gas outlet pipe group can be used as an intermediate auxiliary device for a hydraulic test, a negative pressure exhaust system is not needed to be constructed on the site, the working intensity of on-site workers and the irradiation time are greatly reduced, the collective irradiation metering is reduced, and the safety of overhaul and test work is improved.

The barrel body is divided into a water chamber and an air chamber by arranging a baffle plate in the barrel body, so that the barrel body has the functions of water storage and air storage and is used as a storage barrel; through set up steam-water separation device in the staving and be arranged in getting into the steam-water separation of waste gas, discharge to the hydroecium in, through the baffle separation, make liquid and the waste gas separation that does not contain steam to make from the exhaust gas outlet nest of tubes exhaust waste gas do not contain moisture, avoid influencing the treatment effect to waste gas, thereby reduce the pollution after the gas emission, make the exhaust work of nuclear power plant radioactive container hydrostatic test work safer and more reliable.

The water in the waste gas is separated out through the auxiliary device, so that the dry waste gas exhausted by the radioactive container can directly enter the iodine blower, the reaction of water vapor and iodine after the waste gas enters the iodine blower is avoided, the adsorption effect of the iodine blower on the waste gas is ensured, the cleanliness of the exhaust gas after adsorption is ensured, and the pollution is reduced.

Drawings

FIG. 1 is a schematic structural view of a nuclear power hydrostatic test auxiliary device according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a nuclear power hydrostatic test assist device according to one embodiment of the utility model;

wherein, the correspondence between the reference numerals and the component names in fig. 1 to 2 is:

10. a tub body; 11. a steam-water separation device; 12. a partition plate; 13. a gas chamber; 14. a water chamber; 15. an exhaust gas inlet pipe group; 151. an air intake duct; 152. a first one-way valve; 153. a control valve; 16. an exhaust gas outlet pipe group; 161. an air outlet pipe; 162. a second one-way valve; 17. monitoring a probe; 18. an observation window; 19. a pressure gauge; 20. a water outlet; 21. a drain valve; 22. a universal wheel; 23. locking the wheel.

Detailed Description

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1-2 in combination, according to an embodiment of the present application, a nuclear power hydrostatic test auxiliary device includes: the inside of the barrel body 10 is provided with a steam-water separation device 11 and a baffle plate 12, and the baffle plate 12 separates an air chamber 13 and a water chamber 14 in the barrel body 10; the steam-water separation device 11 is provided with an air inlet end, an air outlet end and a water outlet end, the steam-water separation device 11 is used for separating water vapor in the waste gas, the air outlet end is communicated with the air chamber 13, and the water outlet end is communicated with the water chamber 14; the tub 10 is provided with an exhaust gas inlet pipe group 15 and an exhaust gas outlet pipe group 16, the exhaust gas inlet pipe group 15 being communicated with the intake end, the exhaust gas outlet pipe group 16 being communicated with the air chamber 13. The waste gas inlet pipe group 15 and the waste gas outlet pipe group 16 are simultaneously arranged on the barrel body 10, the on-site construction is not needed, the waste gas inlet pipe group 15 and the waste gas outlet pipe group 16 are only needed to be connected to a test container and a filter system respectively, the waste gas inlet pipe group 15 and the waste gas outlet pipe group 16 can be used as an intermediate auxiliary device for a hydraulic test, a negative pressure exhaust system is not needed to be constructed on site, the working intensity and the irradiated duration of on-site workers are greatly reduced, the collective irradiated measurement is reduced, and the safety of overhaul and test work is improved; the partition plate 12 is arranged in the barrel body 10 to separate the barrel body 10 into the water outlet chamber 14 and the air chamber 13, so that the barrel body 10 has the functions of water storage and air storage and is used as a storage barrel; through set up steam-water separator 11 in staving 10 and be arranged in getting into the steam-water separation of waste gas and come out, discharge in hydroecium 14, through baffle 12 separation, make liquid and the waste gas separation that does not contain steam to make from waste gas outlet nest of tubes 16 exhaust waste gas in do not contain moisture, avoid influencing the treatment effect to waste gas, thereby reduce the pollution after the gas emission, make the exhaust work of nuclear power plant radioactive container hydrostatic test work safer and more reliable.

As an example, the inlet end of the exhaust gas inlet tube group 15 communicates with the test vessel, and the outlet end of the exhaust gas outlet tube group 16 communicates with the exhaust gas treatment device. After the water is filled in the hydrostatic test container, waste gas in the test container is discharged, the waste gas enters the air inlet end of the steam-water separation device 11 in the barrel body 10 through the waste gas inlet pipe group 15, water vapor in the waste gas is separated through the steam-water separation device 11, the water vapor is discharged into the water chamber 14 through the water outlet end, dry waste gas flows into the air chamber 13 from the air outlet end and flows into the waste gas treatment device for treatment through the waste gas outlet pipe group 16, the risk of pollution diffusion caused by direct discharge of the waste gas is avoided, and the safety of a test site is improved.

Further, the waste gas treatment device is an iodine blower in the air filtering system of the nuclear auxiliary factory building, and waste gas enters the iodine blower and is discharged after iodine adsorption. The vapor in the waste gas is separated through the vapor-water separation device 11, so that the reaction of the vapor and iodine after the waste gas enters the iodine blower is avoided, the adsorption effect of the iodine blower on the waste gas is ensured, the cleanliness of the exhaust gas after adsorption is ensured, and the pollution is reduced.

As another example, the exhaust gas inlet pipe group 15 includes an intake pipe 151, a first check valve 152, and a control valve 153, the first check valve 152 and the control valve 153 are provided on the intake pipe 151, and the first check valve 152 is located at an end of the intake pipe 151 near the tub 10. The test container is communicated with the barrel body 10 through the air inlet pipeline 151, and the water chamber 14 is ensured not to flow back into the test container after being full of water by arranging the first one-way valve 152; by setting the control valve 153 to control the opening and closing of the air inlet pipeline 151 according to the water level condition of the container or the water chamber 14, the auxiliary device can automatically stop water inlet and air exhaust under the condition that the water chamber 14 is full of water or the water pressure test container is full of water and air, manual operation is not needed, the safety risk in working is greatly reduced, the working intensity of field personnel is relieved, the overhaul period is shortened, the human error risk is reduced, and the overhaul working efficiency is improved.

Further, the air inlet pipeline 151 is provided with a plurality of air inlet pipelines so that a plurality of test containers can be communicated to the barrel body 10 at the same time to discharge waste gas into the barrel body 10, and the test containers can be subjected to hydrostatic test at the same time, so that the field material use and personnel investment are greatly reduced, and the overall overhaul period is shortened.

The inner wall of the barrel body 10 is provided with a monitoring probe 17, the monitoring probe 17 is positioned at one end of the water chamber 14 close to the partition plate 12, the monitoring probe 17 is electrically connected with the control valve 153, and the monitoring probe 17 is used for monitoring the water level in the water chamber 14 and sending a monitored water level signal to the control valve 153. The monitoring probe 17 is arranged in the water chamber 14 to send a water level signal in real time so as to monitor the water level condition, and accordingly the opening and closing of the control valve 153 are regulated through the monitored water level signal, liquid in the water chamber 14 is prevented from flowing back into the test container, repeated work is avoided, and the efficiency of the hydrostatic test is improved.

Further, the monitoring probe 17 is electrically connected with the receiving probe, the receiving probe receives and scans the signal source, and simultaneously transmits the signal source to the control system, and the control system sends out a control signal to the control valve 153 to adjust the control valve 153, so that it is ensured that no waste gas in the test container enters the barrel 10 after the water chamber 14 is full, and the liquid in the water chamber 14 is prevented from flowing back into the test container.

The tub 10 is provided on a sidewall thereof with an observation window 18, and the observation window 18 is used for observing a water level condition in the water chamber 14. Through setting up observation window 18 on staving 10, experimental site conditions is not good, and when control system can't connect the power, can use observation window 18 naked eye to observe the water level condition in the hydroecium 14, improved auxiliary device's practicality, ensure auxiliary device can all normal use under different operating modes, application scope is wide.

As another example, the exhaust gas outlet pipe group 16 includes an outlet pipe 161 and a second check valve 162, the outlet pipe 161 penetrates the tub 10, the second check valve 162 is provided on the outlet pipe 161, and the second check valve 162 is located in the air chamber 13. The barrel body 10 is communicated with the waste gas treatment device through the air outlet pipeline 161, the second one-way valve 162 controls waste gas to flow outwards only from the barrel body 10, external water-containing gas is prevented from flowing back into the air chamber 13, and the waste gas in the air chamber 13 is ensured to be in a dry state and does not contain water.

The barrel body 10 is provided with a pressure gauge 19, the pressure gauge 19 is communicated with the air chamber 13, and the pressure gauge 19 is used for monitoring the air pressure in the air chamber 13. The pressure gauge 19 is arranged at the top of the barrel body 10, so that the pressure value in the air chamber 13 is intuitively observed through the pressure gauge 19, the air pressure in the air chamber 13 is monitored in real time, and the safety of a water pressure test is ensured.

As another example, the bottom of the tub 10 is provided with a drain port 20, the drain port 20 being in communication with the water chamber 14, the drain port 20 being for draining the liquid in the water chamber 14. Through setting up outlet 20 in staving 10 bottom, prevent that hydroecium 14 from being full of water, be convenient for in time with the water drainage in the hydroecium 14 to guarantee hydrostatic test's continuity, replace artifical drainage through outlet 20 direct drainage, reduce the staff and receive the irradiation measurement, reduce working strength simultaneously, improve maintenance work efficiency.

The drain port 20 is provided with a drain valve 21, and the drain valve 21 is used for controlling the drain port 20. The drain valve 21 is arranged on the drain outlet 20, so that the drain valve 21 controls the opening and closing of the drain outlet 20 to drain water in a set time or period, and the discharged waste water is discharged after being treated in a concentrated manner, so that pollution is reduced.

Further, the drain valve 21 is electrically connected with the control system, and a control signal is sent to the drain valve 21 through the control system, so that the drain valve 21 can be automatically opened or closed, a worker can remotely control the drain valve 21, the irradiation measurement received by the worker is reduced, and the hydraulic test is safely and reliably performed.

As another embodiment, the bottom of the tub 10 is further provided with two universal wheels 22 and two locking wheels 23. By providing rollers at the bottom, facilitating rapid movement of the entire auxiliary device to the vicinity of the test receptacle, the universal wheel 22 can enhance flexibility of movement of the device; after the device is moved in place, the locking wheel 23 locks, fixing the position of the device, preventing the device from moving to disconnect the waste gas inlet pipe group 15 from the test container, thereby preventing waste gas leakage and reducing the risk of pollution diffusion.

When in use, the auxiliary device is pushed to the side of a container or equipment to be tested according to the field requirement; a hose of a suitable length is selected to connect the waste gas inlet tube set 15 with the container vent; connecting the inlet of the iodine blower with the exhaust gas outlet tube group 16 using an adhesive tape or a tying rope; a hose of a suitable length is selected to be connected to the drain opening 20 of the device and introduced into the drain pit; the detection system is connected to a power supply (in case the condition is not met, it can be observed using the observation window 18); after all the pipelines are connected, water filling and air exhausting of the container are started, and after the water in the water chamber 14 is full, electric drainage or manual drainage is performed through the drain valve 21.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiment of the present utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model. The foregoing is merely a preferred embodiment of the present application and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the present application.

Claims (10)

1. The utility model provides a nuclear power hydrostatic test auxiliary device which characterized in that includes:

the water-gas separation device (11) and the partition plate (12) are arranged in the barrel body (10), and the partition plate (12) separates an air chamber (13) and a water chamber (14) in the barrel body (10); the steam-water separation device (11) is provided with an air inlet end, an air outlet end and a water outlet end, the steam-water separation device (11) is used for separating water vapor in the waste gas, the air outlet end is communicated with the air chamber (13), and the water outlet end is communicated with the water chamber (14); the barrel body (10) is provided with an exhaust gas inlet pipe group (15) and an exhaust gas outlet pipe group (16), the exhaust gas inlet pipe group (15) is communicated with an air inlet end, and the exhaust gas outlet pipe group (16) is communicated with the air chamber (13).

2. The nuclear power hydrostatic test auxiliary device according to claim 1, wherein:

the inlet end of the waste gas inlet pipe group (15) is communicated with the test container, and the outlet end of the waste gas outlet pipe group (16) is communicated with the waste gas treatment device.

3. The nuclear power hydrostatic test auxiliary device according to claim 1, wherein:

the exhaust gas inlet pipe group (15) comprises an air inlet pipeline (151), a first one-way valve (152) and a control valve (153), wherein the first one-way valve (152) and the control valve (153) are arranged on the air inlet pipeline (151), and the first one-way valve (152) is positioned at one end, close to the barrel body (10), of the air inlet pipeline (151).

4. A nuclear power hydrostatic test auxiliary device according to claim 3, wherein:

the inner wall of the barrel body (10) is provided with a monitoring probe (17), the monitoring probe (17) is located at one end, close to the partition plate (12), of the water chamber (14), the monitoring probe (17) is electrically connected with the control valve (153), and the monitoring probe (17) is used for monitoring the water level in the water chamber (14) and sending a monitored water level signal to the control valve (153).

5. The auxiliary device for nuclear power hydrostatic testing as set forth in claim 4, wherein:

an observation window (18) is arranged on the side wall of the barrel body (10), and the observation window (18) is used for observing the water level condition in the water chamber (14).

6. The nuclear power hydrostatic test auxiliary device according to claim 1, wherein:

the exhaust gas outlet pipe group (16) comprises an air outlet pipeline (161) and a second one-way valve (162), the air outlet pipeline (161) penetrates through the barrel body (10), the second one-way valve (162) is arranged on the air outlet pipeline (161), and the second one-way valve (162) is positioned in the air chamber (13).

7. The nuclear power hydrostatic test auxiliary device according to claim 6, wherein:

the barrel body (10) is provided with a pressure gauge (19), the pressure gauge (19) is communicated with the air chamber (13), and the pressure gauge (19) is used for monitoring the air pressure in the air chamber (13).

8. The nuclear power hydrostatic test auxiliary device according to claim 1, wherein:

the bottom of the barrel body (10) is provided with a water outlet (20), the water outlet (20) is communicated with the water chamber (14), and the water outlet (20) is used for discharging liquid in the water chamber (14).

9. The nuclear power hydrostatic test auxiliary device according to claim 8, wherein:

the water outlet (20) is provided with a water outlet valve (21), and the water outlet valve (21) is used for controlling the water outlet (20).

10. The nuclear power hydrostatic test auxiliary device according to any one of claims 1 to 9, characterized in that:

the bottom of the barrel body (10) is also provided with two universal wheels (22) and two locking wheels (23).