CN217425273U

CN217425273U - Hydrogen explosion test device for nuclear power equipment

Info

Publication number: CN217425273U
Application number: CN202122853816.7U
Authority: CN
Inventors: 郭爱华; 顾申杰; 薛山虎; 石磊; 杨德双; 卢燕芸; 方立凯; 高雷; 程胤; 晁侃
Original assignee: Shanghai Inspection And Testing Institute Of Instruments And Automatic Systems Co ltd; Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Current assignee: Shanghai Inspection And Testing Institute Of Instruments And Automatic Systems Co ltd; Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-09-13
Anticipated expiration: 2031-11-19

Abstract

The utility model relates to a nuclear power equipment hydrogen explosion test device, shelve platform, two sets of steady temperature heating cores, two sets of intensification heating cores, samming device, distributing device, sample connection, gas vent, paperless temperature recorder, lead to the microcomputer pressure measurement device and the temperature sensor of flame proof test jar including inclosed flame proof test jar, experiment. Two-stage heating and fan mix the warm effect for initial temperature when testing is stable, and the interior temperature of jar rises in the twinkling of an eye after the hydrogen explosion of ignition, because the jar volume is big enough, and near the second stage heating temperature scope temperature drop is quick, but is close first stage heating temperature scope more, and the cooling is slower, has simulated the requirement of hydrogen combustion environment. The test environment required by the hydrogen explosion test can be simulated, and the equipment availability of the nuclear power equipment after passing through the hydrogen explosion environment can be effectively verified.

Description

Hydrogen explosion test device for nuclear power equipment

Technical Field

The utility model relates to an equipment security technique, in particular to nuclear power equipment hydrogen explosion test device.

Background

The equipment used in the pressurized water reactor nuclear power plant is required to be subjected to explosion-proof test for safety. And (3) simulating whether the equipment can be used under the condition that hydrogen generates high temperature in the containment vessel instantaneously when a serious accident occurs. And the simulation of the environmental conditions during the combustion of the hydrogen in the failure containment vessel is difficult. Obtaining a temperature situation that completely meets the trend of instantaneous peak temperature and subsequent temperature drop is more difficult, but the actual situation cannot be realistically simulated, which greatly reduces the effectiveness of test judgment.

SUMMERY OF THE UTILITY MODEL

The hydrogen explosion test device for the nuclear power equipment is provided for improving the detection capability of the nuclear power equipment after hydrogen explosion.

The technical scheme of the utility model is that: a hydrogen explosion test device for nuclear power equipment comprises a closed explosion-proof test tank, a test placing platform, two groups of temperature stabilizing heating cores, two groups of temperature rising heating cores, a temperature equalizing device, a gas distribution device, a sampling port, an exhaust port, a paperless temperature recorder, a microcomputer pressure measuring device communicated with the explosion-proof test tank and a temperature sensor;

the test shelving platform is fixed at the bottom of the inner part of the explosion-proof test tank, two groups of temperature stabilizing heating cores are inserted into the tank from the outside of the explosion-proof test tank and are arranged at two sides of the test shelving platform, two groups of temperature raising heating cores are arranged above the test shelving platform in the explosion-proof test tank, a temperature equalizing device is arranged in the explosion-proof test tank, an in-tank environment temperature sensor and a test sample inner temperature sensor are connected with a paperless temperature recorder, an air distribution device and the explosion-proof test tank are hermetically connected with a pipeline port which is arranged at one side of the bottom of the explosion-proof test tank, and a sampling port is arranged on an exhaust port pipeline at the other end of the explosion-proof test tank far away from the pipeline port.

Preferably, the temperature equalizing device is a fan which is far away from the temperature stabilizing heating core and inserted into the explosion-proof test tank at one end.

Preferably, a combustible gas is arranged in the gas distribution device.

Preferably, the flame-proof test tank is externally provided with a heat-insulating layer.

Preferably, one ends of the two groups of temperature stabilizing heating cores, which are exposed outside the explosion-proof test tank, are provided with thermocouples for directly detecting the temperature of the temperature stabilizing heating cores.

The beneficial effects of the utility model reside in that: the utility model discloses nuclear power equipment hydrogen explosion test device can simulate the required test environment of hydrogen explosion test, effectively verifies the equipment usability of nuclear power equipment behind the hydrogen detonation environment.

Drawings

FIG. 1 is a schematic structural view of a hydrogen explosion test device of nuclear power equipment;

FIG. 2 is a sectional view of the hydrogen explosion testing device of the nuclear power equipment of the utility model;

FIG. 3 is a schematic diagram of the test device for hydrogen explosion test of nuclear power equipment.

The attached drawings are as follows: 1. 17KW heating core; 2. an ignition pressure measuring port; 3. an explosion-proof test tank; 4. 1KW heating core; 5. a support frame; 6. a test shelving platform; 7. a fan; 8. a thermocouple; 20. a hydrogen inlet; 30. an air inlet; 40. a sampling port; 41. an exhaust port; 50. a paperless temperature recorder; 51. a microcomputer pressure measuring device; 52. a temperature sensor.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment of the present invention is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1, 2 nuclear power equipment hydrogen explosion test device schematic structure, volume 2000L in the flame proof test jar 3, the heat preservation is done outside the jar, experimental platform 6 of shelving is fixed in the inside bottom of flame proof test jar 3, two sets of 17KW heating cores 1 from the flame proof test jar 3 external insert in jar, experimental platform 6 both sides of shelving is arranged in, two sets of 1KW heating cores 4 are arranged in experimental platform 6 top of shelving in flame proof test jar 3, there is fan 7 in the flame proof test jar 3 of keeping away from 17KW heating core 1 and inserting one end, there is thermocouple 8 at the 1 one end of 17KW heating core outside flame proof test jar 3, the 1 temperature of direct detection 17KW heating core. The explosion-proof test tank 3 is also provided with an ignition pressure measuring port for detecting the test pressure in the tank.

As shown in a test schematic diagram of a nuclear power equipment hydrogen explosion test device in figure 3, the distributed air is sent into a vacuum explosion-proof test tank 3 from a hydrogen inlet 20 and an air inlet 30 at one side of the bottom of the explosion-proof test tank 3, the configured gas is collected through a sampling port 40 on a pipeline of an exhaust port 41 at the other end far away from the hydrogen inlet 20 and the air inlet 30, after reaching the standard, the gas in the explosion-proof test tank 3 is initially heated by two groups of 17KW heating cores 1, the temperature in the tank is equalized by a fan 7, the two groups of 17KW heating cores 1 are closed after the gas is heated to the temperature of 150 ℃ at the first stage, and meanwhile, the two groups of 1KW heating cores 4 are started to carry out second-stage (400 ℃) heating temperature rise, when the environment where the test sample is located stably reaches the ignition temperature, the two groups of 1KW heating cores 4 are closed to carry out ignition, the microcomputer pressure measuring device 51 carries out dynamic pressure test, and the paperless temperature recorder 50 carries out temperature recording in the whole process. The in-tank environment temperature sensor and the internal temperature sensor of the test sample acquire the in-tank environment and the temperature of the test sample in real time, so that the hydrogen explosion test of the nuclear power equipment is completed, and process data acquisition can be completed.

Two-stage heating and fan mix warm effect for initial temperature when testing is stable, and the interior temperature of pot rises in the twinkling of an eye after the hydrogen explosion of igniteing because the jar internal volume is enough big, and near the second stage heating temperature scope temperature decline is quick, but is close to first stage heating temperature scope more, and the cooling is slower, has simulated the requirement of hydrogen combustion environment (temperature + pressure).

Here, the two sets of 17KW heating cores 1 are temperature-stabilized heating cores with a matching volume of 2000L, and the 1KW heating core 4 is a temperature-raising heating core matching the sample. And (4) matching according to the volume of the explosion-proof test tank 3 and the size of the sample.

The fan 7 is used as a temperature equalizing device and is arranged at one end in the explosion-proof test tank 3, so that heat in the explosion-proof test tank 3 is circularly mixed to achieve the temperature equalizing effect, and the power of the fan is configured according to the volume of the explosion-proof test tank 3.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A hydrogen explosion test device for nuclear power equipment is characterized by comprising a closed explosion-proof test tank, a test laying platform, two groups of temperature stabilizing heating cores, two groups of temperature rising heating cores, a temperature equalizing device, a gas distribution device, a sampling port, an exhaust port, a paperless temperature recorder, a microcomputer pressure measuring device communicated with the explosion-proof test tank and a temperature sensor; the test shelving platform is fixed at the bottom of the inner part of the explosion-proof test tank, two groups of temperature stabilizing heating cores are inserted into the tank from the outside of the explosion-proof test tank and are arranged at two sides of the test shelving platform, two groups of temperature raising heating cores are arranged above the test shelving platform in the explosion-proof test tank, a temperature equalizing device is arranged in the explosion-proof test tank, an in-tank environment temperature sensor and a test sample inner temperature sensor are connected with a paperless temperature recorder, an air distribution device and the explosion-proof test tank are hermetically connected with a pipeline port which is arranged at one side of the bottom of the explosion-proof test tank, and a sampling port is arranged on an exhaust port pipeline at the other end of the explosion-proof test tank far away from the pipeline port.

2. The hydrogen explosion test device of nuclear power equipment according to claim 1, wherein the temperature equalizing device is a fan in an explosion-proof test tank inserted into one end of the temperature stabilizing heating core.

3. The nuclear power plant hydrogen explosion test device according to claim 1, wherein a combustible gas is provided in the gas distribution device.

4. The hydrogen explosion test device for the nuclear power equipment according to claim 1, wherein an insulating layer is arranged outside the explosion-proof test tank.

5. The hydrogen explosion test device for the nuclear power equipment according to claim 4, wherein one ends of the two groups of temperature-stabilizing heating cores, which are exposed outside the explosion-proof test tank, are provided with thermocouples for directly detecting the temperature of the temperature-stabilizing heating cores.