A passive water level test device and test method
A test device and passive technology, applied in the field of passive water level test devices, can solve the problems of high price, high equipment requirements, difficulty in realizing continuous multi-pressure platform tests, etc., and achieve the effect of improving efficiency and simplifying equipment
Active Publication Date: 2016-01-27
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
Traditional test devices require high-pressure pumps to pump water to achieve water level rise, which requires high equipment and is expensive. It is difficult to control the rate of rise under different pressure conditions, and it is difficult to achieve continuous multi-pressure platform tests.
Method used
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[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0037] like figure 1 As shown, the passive water level test device of the present invention includes a pressure vessel 2, an electric heater A3, a LOCA simulation valve B4, an external water replenishment pipeline 5, a LOCA simulation valve A6, a communication valve B7, an electric heater B8, and a pressure regulating box 9 , safety valve 10, exhaust valve 11, pressure balance valve B12, pressure balance valve A13, vacuum pump 14, drain valve 15, water level adjustment box 16, communication valve A17, differential pressure transmitter A18, differential pressure transmitter B19, Pressure transmitter 20 and isolation valve 21.
[0038] The pressure vessel 2 is a cylindrical closed structure, and an electric heater A3 is arranged at the inner bottom of the pressure vessel 2; the material of the pressure vessel 2 is steel, such as austenitic stai...
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The invention belongs to the technical field of water level testing for nuclear power plants, and specifically relates to a passive water level testing device and a testing method. The bottom in a pressure container is provided with an electric heater A; the side wall of the pressure container is connected to the lower part of a pressure regulating box, a pipeline is provided with an intercommunicating valve B; the bottom in the pressure modulating box is provided with an electric heater B; one end of a differential pressure transmitter B is connected to a position, which is between the intercommunicating valve B and the pressure modulating box, the other end and the pressure transmitter of the differential pressure transmitter B are both connected to the top part of the pressure modulating box; the top part of the pressure container is connected to the upper part of the pressure modulating box; the top part of the pressure container is connected to the upper part of a water level modulating box, a pressure balancing valve A is arranged on this section of the pipeline; the top part of the water level modulating box is provided with a insulation valve; the upper part of the water level modulating box is provided with an external water supplying pipeline; the lower part of the water level modulating box is connected to the side wall of the pressure container, and an intercommunicating valve A is arranged on this section of the pipeline. The passive water level testing device can smartly and conveniently achieve rise and decline of water level under different pressures, and reduces the requirements on equipment.
Description
technical field [0001] The invention belongs to the technical field of water level detection in nuclear power plants, and in particular relates to a passive water level test device and a test method. Background technique [0002] In advanced pressurized water reactor nuclear power plants, most of them have adopted a new type of detector to measure the water level of the reactor pressure vessel, which is directly inserted into the reactor pressure vessel for measurement. In this kind of detector type test, it is necessary to simulate the working environment in the pressure vessel for some transient tests, including the rise and fall of the water level. Traditional test devices require high-pressure pumps to pump water to achieve water level rise, which requires high equipment and is expensive. It is difficult to control the rate of rise under different pressure conditions, and it is difficult to achieve continuous multi-pressure platform tests. Contents of the invention ...
Claims
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IPC IPC(8): G21C17/00G01F25/00
CPCY02E30/30
Inventor 何正熙何鹏余俊辉李小芬苟拓李文平杨戴博王华金
Owner NUCLEAR POWER INSTITUTE OF CHINA