CN216082329U - Nuclear-grade container hydrostatic test device - Google Patents
Nuclear-grade container hydrostatic test device Download PDFInfo
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- CN216082329U CN216082329U CN202122131551.XU CN202122131551U CN216082329U CN 216082329 U CN216082329 U CN 216082329U CN 202122131551 U CN202122131551 U CN 202122131551U CN 216082329 U CN216082329 U CN 216082329U
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Abstract
The utility model relates to the technical field of nuclear power plant hydrostatic tests, and particularly discloses a nuclear-grade container hydrostatic test device and a method. The utility model can efficiently and quickly complete the hydraulic test work of a plurality of containers, and effectively saves the construction period, manpower and material resources.
Description
Technical Field
The utility model belongs to the technical field of hydraulic pressure tests of nuclear power plants, and particularly relates to a nuclear-grade container hydraulic pressure test device.
Background
According to the RSE-M in-service inspection rule of mechanical equipment of a nuclear island of a pressurized water reactor nuclear power plant: the nuclear power plant operating unit is responsible for the regular hydrostatic test of the pressure-bearing equipment during the service period, and the pressure vessel is inspected regularly or after maintenance according to the legal standard so as to ensure that the pressure-bearing equipment keeps a satisfactory safety level under the condition of continuous pressure bearing.
The hydraulic test of a nuclear-grade pressure-bearing container in the nuclear power field generally adopts a pipeline and a boundary valve of the existing container to carry out the test. After verifying that the pressure bearing grades of the pipelines, the valves and the instruments meet the test requirements, the general test method comprises the following steps: the low-level installation of selecting the container fills water, suppresses the pipe, installs exhaust, pressure-measuring pipe in the top position of container, and with the air escape in the container until the container is inside to fill the test water during filling water, the rethread suppresses the pressure according to certain speed with the pump, carries out the pressurize inspection at design pressure platform and test pressure platform. The above general method is only suitable for the case that the top of the container is provided with an exhaust point, but during operation, part of the container cannot create exhaust conditions, such as a tube side hydraulic test of a vertical inverted U-shaped shell-and-tube heat exchanger, a container without an exhaust pipeline on the top, and the like. And low-order exhaust leads to remaining a large amount of air in the container easily, and the pump flow of beating is little, and it can cause the process of stepping up slowly to beat to press by force, and test process compressed air produces safety risk scheduling problem. Therefore, the general container hydrostatic test method is not suitable for the container, and how to effectively fill water and exhaust air becomes the difficulty of the hydrostatic test.
For the container with difficult air exhaust, a pipeline is generally cut and the container is horizontally placed to create an air exhaust point, but the work generates more additional operations, the task load is great, the requirement of the construction period during the overhaul period of the nuclear power plant cannot be met, and meanwhile, part of the containers do not have the horizontal placement condition.
Therefore, it is desirable to design a nuclear-grade container hydrostatic testing apparatus to solve the above problems.
Disclosure of Invention
The utility model aims to provide a nuclear-grade container hydrostatic test device which can carry out a container hydrostatic test without dismantling a pipeline.
The technical scheme of the utility model is as follows:
a nuclear-grade container hydrostatic test device is characterized in that a water filling and pressurizing tool and a pressure measuring and draining tool are respectively installed on two sides of a nuclear-grade container;
one end of a pressurizing pipe of the water-filling pressurizing tool is used as a pressurizing interface, and the other end of the pressurizing pipe is connected with an opening on one side of the nuclear-grade container;
the pressurizing pipe is provided with a pressurizing isolation valve and a tee joint A;
one end of the connecting pipe A is used as a water filling interface, the other end of the connecting pipe A is connected with the tee joint A, and a water filling isolation valve is arranged on the connecting pipe A;
one end of a drain pipe of the pressure measuring and draining tool is used as a draining interface, and the other end of the drain pipe is connected with an opening on the other side of the nuclear-grade container;
a drainage isolation valve and a tee joint B are arranged on the drainage pipe;
one end of the connecting pipe B is used as a pressure measuring interface, the other end of the connecting pipe B is connected with the tee joint B, and a pressure measuring isolation valve is arranged on the connecting pipe B.
The pressurizing interface is connected with a vacuum pump or a pressurizing pump.
The inner thread of the pressurizing connector is connected with a high-pressure hose at the outlet of the pressurizing pump, and the outer wall of the pressurizing connector is connected with a hose at the suction inlet of the vacuum pump.
The water filling interface is connected with a water source through a hose.
The other end of the pressurizing pipe of the water filling and pressurizing tool is connected with a hand hole cover plate A, and the hand hole cover plate A is arranged at an opening on one side of the nuclear-grade container through a flange bolt.
And the pressure measuring interface is connected with an absolute pressure type pressure gauge or a gauge pressure type pressure gauge.
The pressure measuring interface is a threaded interface and is connected with an absolute pressure type pressure gauge or a gauge pressure type pressure gauge through threads and a sealing gasket.
The drainage interface is connected with the hose through a hoop and guides the waste liquid to a designated discharge place.
The other end of the drain pipe of the pressure measuring and draining tool is connected with a hand hole cover plate B, and the hand hole cover plate B is arranged at the opening of the other side of the nuclear-grade container through a flange bolt.
The pressurizing interface is connected with a vacuum pump or a pressurizing pump;
the inner thread of the pressurizing connector is connected with a high-pressure hose at the outlet of the pressurizing pump, and the outer wall of the pressurizing connector is connected with a hose at the suction inlet of the vacuum pump;
the water filling interface is connected with a water source through a hose;
the other end of the pressurizing pipe of the water-filling pressurizing tool is connected with a hand hole cover plate A, and the hand hole cover plate A is arranged at an opening at one side of the nuclear-grade container through a flange bolt;
the pressure measuring interface is connected with an absolute pressure type pressure gauge or a gauge pressure type pressure gauge;
the pressure measuring interface is a threaded interface and is connected with an absolute pressure type pressure gauge or a gauge pressure type pressure gauge through threads and a sealing gasket;
the drainage interface is connected with the hose through a hoop and guides the waste liquid to a specified discharge place;
the other end of the drain pipe of the pressure measuring and draining tool is connected with a hand hole cover plate B, and the hand hole cover plate B is arranged at the opening of the other side of the nuclear-grade container through a flange bolt.
The utility model has the beneficial effects that:
the utility model can efficiently and quickly complete the hydraulic test work of a plurality of containers, and effectively saves the construction period, manpower and material resources. The concrete effects are as follows:
(1) the operation is simple: the tool has simple structure, convenient assembly and easy operation;
(2) the work efficiency is high: the utility model can overcome the problem that the container has no high point exhaust, so that the water filling and the exhaust of the hydrostatic test are sufficient, and the test execution is facilitated;
(3) is not limited by field space: the utility model can solve the problem that the container can not be disassembled or the disassembling workload is large, does not need excessive pipeline cutting and hoisting operation, and can utilize the opening of the existing pipeline to evacuate the air in the pipeline;
(4) the tool has wide application range: the utility model has the purification equipment of radioactive gas, can be used for the hydraulic pressure test of a radioactive container, and can realize the containment of radioactivity.
Drawings
FIG. 1 is a schematic view of a water-filled pressurizing tool;
FIG. 2 is a schematic view of a pressure measuring and water draining fixture;
FIG. 3 is a schematic flow diagram of a nuclear-grade container hydrostatic test method.
In the figure: 1, filling water and pressurizing a tool; 1-1 hand hole cover plate A; 1-2 filling water isolation valve; 1-3 water filling interface; 1-4, pressing an isolation valve; 1-5 pressing the interface; 1-6 connecting pipe A; 1-7, a tee joint A; 2, a pressure measuring and water draining tool; 2-1 hand hole cover plate B; 2-2, a pressure measuring isolation valve; 2-3 pressure measuring interface; 2-4 drainage isolation valves; 2-5 drainage interfaces; 2-6, connecting pipe B; 2-7, a tee joint B; 3 absolute pressure type pressure gauge; 4 gauge pressure type pressure gauge; 5, a vacuum pump; 6, purifying the trolley; 7 a pressurizing pump.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
A nuclear-grade container hydrostatic test device is characterized in that a water filling and pressurizing tool 1 and a pressure measuring and draining tool 2 are respectively installed on two sides of a nuclear-grade container.
As shown in fig. 1, one end of a pressurizing pipe of the water-filled pressurizing tool 1 serves as a pressurizing port 1-5, the other end of the pressurizing pipe is connected with a hand hole cover plate a1-1, and the hand hole cover plate a1-1 is arranged at an opening at one side of the pressure vessel through a flange bolt. The pressurizing pipe is provided with a pressurizing isolation valve 1-4 and a tee joint A1-7. One end of the connecting pipe A1-6 is used as a water filling connector 1-3, the other end is connected with a tee joint A1-7, and a water filling isolation valve 1-2 is arranged on the connecting pipe A1-6.
The pressurizing pipe, the hand hole cover plate A1-1, the pressurizing isolation valve 1-4, the tee joint A1-7 and the water filling isolation valve 1-2 are connected by socket welding.
The pressurizing connector 1-5 is connected with a vacuum pump 5 or a pressurizing pump 7, the internal thread of the pressurizing connector 1-5 is connected with a high-pressure hose at the discharge port of the pressurizing pump 7, and the outer wall of the pressurizing connector 1-5 is connected with a suction port hose of the vacuum pump 5.
And a suction inlet of the vacuum pump 5 is connected with the pressurizing ports 1-5 through a hose and a hoop, and a discharge outlet of the vacuum pump is connected with the air purification trolley 6 through a hose and a hoop. The flow rate of the radioactive gas purified by the purification trolley 6 is far larger than that of the vacuum pump 5. The vacuum degree in the container is established through the vacuum pump 5 and the air purification trolley 6, and the problem that the water filling and the air exhausting are difficult in the container hydrostatic test installed on the site is solved.
The discharge port of the pressurizing pump 7 is connected with the pressurizing ports 1-5 of the water-filled pressurizing tool 1 through high-pressure hoses with threads at two ends.
The water filling interfaces 1-3 are connected with a water source through hoses.
As shown in fig. 2, one end of a drain pipe of the pressure measuring and draining tool 2 serves as a drain connector 2-5, the other end of the drain pipe is connected with a hand hole cover plate B2-1, and the hand hole cover plate B2-1 is arranged at an opening on the other side of the pressure vessel through a flange bolt. And a drainage isolation valve 2-4 and a tee joint B2-7 are arranged on the drainage pipe. One end of the connecting pipe B2-6 is used as a pressure measuring connector 2-3, the other end is connected with a tee joint B2-7, and a pressure measuring isolation valve 2-2 is arranged on the connecting pipe B2-6.
The drain pipe, the hand hole cover plate B2-1, the drain isolation valve 2-4, the tee joint B2-7 and the pressure measuring isolation valve 2-2 are connected by socket welding.
The pressure measuring connector 2-3 is a threaded connector and is connected with the absolute pressure type pressure gauge 3 or the gauge pressure type pressure gauge 4 through threads and a sealing gasket. The drainage connector 2-5 is connected with a hose through a clamp, and waste liquid is led to a designated drainage place.
A nuclear grade vessel hydrostatic test method as shown in fig. 3, comprising the steps of:
step 1: vacuum pumping
A water filling and pressurizing tool 1 and a pressure measuring and draining tool 2 are installed on a flange on the side of a container pipe, an insulating pressure gauge 3 is installed on a pressure measuring interface 2-3, a suction port of a vacuum pump 5 is connected to the pressurizing interface 1-5, and a discharge port of the vacuum pump is connected to an air purification trolley 6;
opening a pressurizing isolation valve 1-4 and a pressure measuring isolation valve 2-2, and closing a water filling isolation valve 1-2 and a water discharging isolation valve 2-4;
starting the air purification trolley 6 and the vacuum pump 5, observing the reading of the pressure-insulated type pressure gauge 3, stopping running the vacuum pump 5 when the reading is close to-0.1 MPa and does not fall any more, closing the pressure-insulated valves 1-4 and the pressure-insulated valves 2-2, stopping running the air purification trolley 6, and almost exhausting the air in the container at the moment;
the vacuum pump 5 and the air purification trolley 6 are dismantled;
step 2: filling water
Temporarily closing the pressure measuring isolation valve 2-2, replacing an absolute pressure type pressure gauge 3 with a pressure gauge type pressure gauge 4, connecting the water filling interface 1-3 with a water source through a water filling hose, opening the water filling isolation valve 1-2, and filling water into the container;
observing the reading of a gauge pressure type pressure gauge 4, and closing the water filling isolation valve 1-2 when the reading starts to rise; at this time, the inside of the container was completely filled with test water;
dismantling the water-filled hose;
and step 3: pressing force
Connecting the pressurizing ports 1-5 with the discharge port of a pressurizing pump 7 through a high-pressure hose, starting the pressurizing isolation valves 1-4, starting the pressurizing pump 7, controlling the pressurizing rate to be not more than 0.2MPa/min, and pressurizing the container;
observing 4 readings of a gauge pressure type pressure gauge, respectively staying on a design pressure platform and a test pressure platform, carrying out visual inspection on leakage and deformation of the surface of the pressure-bearing component of the container and a welding line, and recording whether the inspection is qualified or not;
and 4, step 4: pressure relief
Closing the pressurizing isolation valves 1-4, connecting a hose at the position of the drainage interface 2-5, leading the hose to a drainage place, slowly opening the drainage isolation valves 2-4, controlling the pressure reduction rate to be not more than 0.2MPa/min, and decompressing the container;
observing the reading of a gauge pressure type pressure gauge 4, and checking respectively at the design pressure and the normal pressure;
subsequently, the test water in the container is drained through a process pipeline;
if the record in the step 3 is unqualified, returning to the step 1 for re-testing after defect treatment; and if the record in the step 3 is qualified, ending the test.
In nuclear power overhaul, the hydraulic test work of the pipe side of the waste heat discharge heat exchanger and the water level measurement buffer tank of the pressure container needs to be executed. The waste heat discharge heat exchanger is a vertical U-shaped pipe heat exchanger, a large amount of air exists in an inverted U-shaped pipe and cannot be discharged, a pressure container water level measurement buffer tank does not have a top exhaust port, the pressure container water level measurement buffer tank carries out a hydraulic test with air, and potential safety hazards exist and equipment damage is easily caused. If a common method is adopted, the waste heat discharge heat exchanger cannot be lifted out and leveled, and the water level measurement buffer tank of the pressure container is also wrapped by the pipeline and the cable groove, so that the lifting workload is large. By adopting the method, the exhaust problem is effectively solved, the nuclear-grade pipeline and the hoisting container are not required to be cut, and the container hydraulic pressure test work of the pipe side of 2 waste heat discharging heat exchangers and the water level measuring buffer tank of 2 pressure containers is efficiently and smoothly completed. The workload of a single container in the original plan for six days is shortened to be completed by two days, and the working efficiency is obviously improved.
Claims (10)
1. The utility model provides a nuclear level container hydrostatic test device which characterized in that: a water filling and pressurizing tool (1) and a pressure measuring and draining tool (2) are respectively arranged on two sides of the nuclear-grade container;
one end of a pressing pipe of the water-filling pressing tool (1) is used as a pressing interface (1-5), and the other end of the pressing pipe is connected with an opening at one side of the nuclear-grade container;
the pressing pipe is provided with a pressing isolation valve (1-4) and a tee joint A (1-7);
one end of the connecting pipe A (1-6) is used as a water filling connector (1-3), the other end of the connecting pipe A (1-6) is connected with the tee joint A (1-7), and a water filling isolation valve (1-2) is arranged on the connecting pipe A (1-6);
one end of a drain pipe of the pressure measuring and draining tool (2) is used as a draining interface (2-5), and the other end of the drain pipe is connected with an opening on the other side of the nuclear-grade container;
a drainage isolation valve (2-4) and a tee joint B (2-7) are arranged on the drainage pipe;
one end of the connecting pipe B (2-6) is used as a pressure measuring interface (2-3), the other end is connected with the tee joint B (2-7), and a pressure measuring isolation valve (2-2) is arranged on the connecting pipe B (2-6).
2. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the pressurizing connector (1-5) is connected with a vacuum pump (5) or a pressurizing pump (7).
3. The nuclear grade vessel hydraulics test apparatus of claim 2, wherein: the internal thread of the pressurizing connector (1-5) is connected with a high-pressure hose at the discharge port of the pressurizing pump (7), and the outer wall of the pressurizing connector (1-5) is connected with a suction port hose of the vacuum pump (5).
4. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the water filling interfaces (1-3) are connected with a water source through hoses.
5. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the other end of the pressurizing pipe of the water filling and pressurizing tool (1) is connected with a hand hole cover plate A (1-1), and the hand hole cover plate A (1-1) is arranged at an opening at one side of the nuclear-grade container through a flange bolt.
6. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the pressure measuring interface (2-3) is connected with an absolute pressure type pressure gauge (3) or a gauge pressure type pressure gauge (4).
7. The nuclear grade vessel hydraulics test apparatus of claim 6 in which: the pressure measuring connector (2-3) is a threaded connector and is connected with the absolute pressure type pressure gauge (3) or the gauge pressure type pressure gauge (4) through threads and a sealing gasket.
8. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the drainage connector (2-5) is connected with the hose through a clamp, and waste liquid is led to a designated drainage place.
9. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the other end of a drain pipe of the pressure measuring and draining tool (2) is connected with a hand hole cover plate B (2-1), and the hand hole cover plate B (2-1) is arranged at an opening at the other side of the nuclear-grade container through a flange bolt.
10. The nuclear grade vessel hydraulics test apparatus of claim 1, wherein: the pressurizing connector (1-5) is connected with a vacuum pump (5) or a pressurizing pump (7);
the internal thread of the pressurizing connector (1-5) is connected with a high-pressure hose at the discharge port of the pressurizing pump (7), and the outer wall of the pressurizing connector (1-5) is connected with a hose at the suction port of the vacuum pump (5);
the water filling connector (1-3) is connected with a water source through a hose;
the other end of a pressurizing pipe of the water-filling pressurizing tool (1) is connected with a hand hole cover plate A (1-1), and the hand hole cover plate A (1-1) is arranged at an opening at one side of the nuclear-grade container through a flange bolt;
the pressure measuring interface (2-3) is connected with an absolute pressure type pressure gauge (3) or a gauge pressure type pressure gauge (4);
the pressure measuring connector (2-3) is a threaded connector and is connected with the absolute pressure type pressure gauge (3) or the gauge pressure type pressure gauge (4) through threads and a sealing gasket;
the drainage connector (2-5) is connected with a hose through a hoop and used for leading waste liquid to a specified drainage place;
the other end of a drain pipe of the pressure measuring and draining tool (2) is connected with a hand hole cover plate B (2-1), and the hand hole cover plate B (2-1) is arranged at an opening at the other side of the nuclear-grade container through a flange bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122131551.XU CN216082329U (en) | 2021-09-06 | 2021-09-06 | Nuclear-grade container hydrostatic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122131551.XU CN216082329U (en) | 2021-09-06 | 2021-09-06 | Nuclear-grade container hydrostatic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216082329U true CN216082329U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122131551.XU Active CN216082329U (en) | 2021-09-06 | 2021-09-06 | Nuclear-grade container hydrostatic test device |
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|---|---|
| CN (1) | CN216082329U (en) |
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2021
- 2021-09-06 CN CN202122131551.XU patent/CN216082329U/en active Active
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