CN212432704U

CN212432704U - Nuclear island exhaust gas system oxygen meter sampling analysis device

Info

Publication number: CN212432704U
Application number: CN202021238810.8U
Authority: CN
Inventors: 林锋; 刘亦晨; 许玉林
Original assignee: ZHEJIANG SANFANG CONTROL VALVE CO Ltd
Current assignee: ZHEJIANG SANFANG CONTROL VALVE CO Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-29
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a nuclear island exhaust gas system oxygen meter sampling and analyzing device, which is characterized by comprising a sampling pretreatment device, a local control box, and an oxygen analysis display instrument and a hydrogen analysis display instrument which are connected with the local control box; the pretreatment device comprises a pipeline, and a coarse filter, a fine filter, a first condenser, a second condenser, a standard gas cylinder and a flow cell which are connected with the pipeline; and the flow cell is internally connected with an oxygen sensor, a hydrogen sensor and a pressure sensor. The utility model discloses the concentration of oxygen and relevant alarm information among the control exhaust gas system that can be real-time, the use of control nuclear power station that can be better.

Description

Nuclear island exhaust gas system oxygen meter sampling analysis device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an analytical equipment technical field specifically indicates a nuclear island exhaust gas system oxygen meter sampling analysis device.

[ background of the invention ]

The composition of a nuclear power plant is generally in two parts: nuclear systems and nuclear devices, also known as nuclear islands; conventional system and conventional equipment, also known as conventional island, are equipped with exhaust apparatus on the nuclear island, and among the prior art, can not detect the interior oxygen concentration of waste gas in real time to the exhaust apparatus on the nuclear island, can only take out the survey to the oxygen concentration in the exhaust system of system real-time monitoring also can not make accurate judgement and control to exhaust system. Therefore, a sampling and analyzing device for an oxygen meter of a nuclear island exhaust system is provided.

[ summary of the invention ]

The utility model aims at solving the above problems and providing a nuclear island exhaust gas system oxygen meter sampling and analyzing device.

In order to achieve the above purpose, the utility model provides a following technical scheme: a nuclear island exhaust system oxygen meter sampling and analyzing device is characterized by comprising a sampling pretreatment device, an on-site control box, an oxygen analysis display instrument and a hydrogen analysis display instrument, wherein the oxygen analysis display instrument and the hydrogen analysis display instrument are connected with the on-site control box; the pretreatment device comprises a pipeline, and a coarse filter, a fine filter, a first condenser, a second condenser, a standard gas cylinder and a flow cell which are connected with the pipeline; and the flow cell is internally connected with an oxygen sensor, a hydrogen sensor and a pressure sensor.

Preferably, the pipelines comprise an air inlet pipeline, a nitrogen purging pipeline, an exhaust pipeline, a connecting pipeline, a main drainage pipeline, an oxygen measuring pipeline, a hydrogen measuring pipeline and a standard gas pipeline; the pipelines are connected with throttle valves; and the nitrogen purging pipeline and the standard gas pipeline are connected with a filtering and pressure regulating valve.

Preferably, the air inlet pipeline is connected with a first condenser and a nitrogen purging pipeline; the first condenser is connected with a coarse filter; the coarse filter is connected with an air suction pump; the air pump is connected with a second condenser; the second condenser is connected with a fine filter; the first condenser and the second condenser are both connected with drain pipes; the drain pipe is connected with a main drain pipeline.

Preferably, one section of the standard gas pipeline is connected with a standard gas cylinder, and one end of the standard gas pipeline is connected with a three-way valve; the three-way valve is connected with a connecting pipeline and a fine filter; the connecting pipeline is connected with the oxygen measuring pipeline, the hydrogen measuring pipeline and the exhaust pipeline; the oxygen measuring pipeline is connected with the hydrogen measuring pipeline; and the hydrogen measuring pipeline is connected with a flowmeter.

The utility model has the advantages that: the sampling analysis device can monitor the concentration of oxygen in the waste gas system and related alarm information in real time, and can better control the use of the nuclear power station.

[ description of the drawings ]

Fig. 1 is a flow chart of the present invention.

Fig. 2 is a schematic structural view of the pretreatment device of the present invention.

Illustration of the drawings: 1 sampling pretreatment device; 101, a coarse filter; 102 a fine filter; 103 a first condenser; 104 a second condenser; 105 standard gas cylinders; 106 a flow-through cell; 107 oxygen sensors; a 108 hydrogen sensor; 109 a pressure sensor; 110 an air inlet pipeline; 111 nitrogen purge line; 112 an exhaust line; 113 connecting the pipelines; 114 a main drain line; 115 oxygen measuring pipeline; 116 a hydrogen measuring pipeline; 117 standard gas line; 118 a throttle valve; 119 filtering and pressure regulating valve; 120 air pump; 121 drain pipes; 122 three-way valve; 123 flow meter; 2, controlling the box on site; 3 oxygen analysis display instrument; 4 hydrogen analysis indicator.

Detailed Description

The following description will further describe an oxygen meter sampling and analyzing device of a nuclear island exhaust system with reference to the accompanying drawings.

Referring to fig. 1-2, the sampling and analyzing device for the oxygen meter of the nuclear island exhaust system in the present embodiment is characterized by comprising a sampling pretreatment device 1, an on-site control box 2, and an oxygen analysis display instrument 3 and a hydrogen analysis display instrument 4 connected to the on-site control box 2; the pretreatment device 1 comprises a pipeline, and a coarse filter 101, a fine filter 102, a first condenser 103, a second condenser 104, a standard gas cylinder 105 and a flow cell 106 which are connected with the pipeline; an oxygen sensor 107, a hydrogen sensor 108 and a pressure sensor 109 are connected in the flow cell 106; the pipelines comprise an air inlet pipeline 110, a nitrogen purging pipeline 111, an exhaust pipeline 112, a connecting pipeline 113, a main drainage pipeline 114, an oxygen measuring pipeline 115, a hydrogen measuring pipeline 116 and a standard gas pipeline 117; the pipelines are connected with throttle valves 118; the nitrogen purging pipeline 111 and the standard gas pipeline 117 are connected with a filtering pressure regulating valve 119; the air inlet pipeline 110 is connected with a first condenser 103 and a nitrogen purging pipeline 111; the first condenser 103 is connected with a coarse filter 101; the coarse filter 101 is connected with an air suction pump 120; the second condenser 104 is connected to the air pump 120; a fine filter 102 is connected to the second condenser 104; the first condenser 103 and the second condenser 104 are both connected with a drain pipe 121; the drain pipe 121 is connected to the main drain pipe 114; one end of the standard gas pipeline 117 is connected with the standard gas cylinder 105, and the other end is connected with a three-way valve 122; the three-way valve 122 is connected with a connecting pipeline 113 and a fine filter 102; the connecting pipeline 113 is connected with the oxygen measuring pipeline 115, the hydrogen measuring pipeline 116 and the exhaust pipeline 112; the oxygen measuring pipeline 115 is connected with the hydrogen measuring pipeline 116; the hydrogen measuring pipeline 116 is connected with a flow meter 123.

The working process of the utility model, firstly, nitrogen is used to enter each pipeline from the nitrogen purging pipeline 111 for purging, condensed water and gas in the pipeline are all discharged outside the pipeline, then the nitrogen purging pipeline 11 is closed, the standard gas bottle 105 is opened, the standard gas enters the standard gas pipeline 117 through the filtering and pressure regulating valve 119, the standard gas in the standard gas pipeline enters the connecting pipeline 113 through the three-way valve 122, then the standard gas respectively enters the oxygen measuring pipeline 115 and the hydrogen measuring pipeline 116 through the connecting pipeline, then the standard gas in the oxygen measuring pipeline 115 and the hydrogen measuring pipeline 116 calibrates the oxygen sensor 107 and the hydrogen sensor 708, then the local control box 2 is electrified, the local control box 2 controls the air pump 120 to enable the waste gas to enter the first condenser 103 through the air inlet pipeline 110 for filtering water, then enter the coarse filter 101 for filtering impurities in the gas, then enter the second condenser 104 and the fine filter 102 for filtering water and impurities, the water filtered by the first condenser 103 and the second condenser 104 enters the drain header 114 through the drain pipe 121 and is discharged outside the pipe, the gas enters the oxygen measuring pipeline 115 and the hydrogen measuring pipeline 116 through the three-way valve 122 and the connecting pipeline 113, then the oxygen sensor 107 and the hydrogen sensor 108 detect and compare the oxygen concentration and the hydrogen concentration in the gas, then the signals are sent to the oxygen analysis display instrument 3 and the hydrogen analysis display instrument 4, the oxygen analysis display instrument 3 and the hydrogen analysis display instrument 4 send the signals to the local control box 2, the local control box 2 sends the signals to the system, the system sends the signals again for control, after the test is finished, the gas flows to the exhaust pipeline 112 from the oxygen measuring pipeline 115 and the hydrogen measuring pipeline 116, and finally the gas is discharged through the exhaust pipeline 112.

The beneficial effects of the utility model, through connecting standard gas cylinder 105 and three-way valve 122 on standard gas pipeline 117, three-way valve 122 is connected with connecting line 113, connecting line 113 is connected with flow cell 106, install oxygen sensor 107 and hydrogen sensor 108 in flow cell 106, use standard gas cylinder 105 to mark oxygen sensor 107 and hydrogen sensor 108 between so, need not dismantle oxygen sensor 107 and hydrogen sensor 108 from flow cell 106 and mark, thereby can reduce the time of dismouting, it is more convenient to use; through installing oxygen sensor 107 and hydrogen sensor 108 in flow-through cell 106, the oxygen concentration that oxygen sensor 107 and hydrogen sensor 108 surveyed compares with the standard with the hydrogen concentration, can directly send the signal to oxygen analysis display 3 and hydrogen analysis display 4 to use local control box 2 to send the system, can be real-time send information to the system like this, make the system can real-time concentration of oxygen and relevant alarm information in the real-time monitoring exhaust gas system, can also obtain the content of oxygen in the gas and the content of hydrogen simultaneously, thereby make the judgement control more fast.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A nuclear island exhaust gas system oxygen meter sampling and analyzing device is characterized by comprising a sampling pretreatment device (1), an on-site control box (2), an oxygen analysis display instrument (3) and a hydrogen analysis display instrument (4), wherein the oxygen analysis display instrument and the hydrogen analysis display instrument are connected with the on-site control box (2); the pretreatment device (1) comprises a pipeline, and a coarse filter (101), a fine filter (102), a first condenser (103), a second condenser (104), a standard gas cylinder (105) and a flow cell (106) which are connected with the pipeline; an oxygen sensor (107), a hydrogen sensor (108) and a pressure sensor (109) are connected in the flow cell (106).

2. The nuclear island exhaust system oxygen meter sampling and analyzing device of claim 1, wherein: the pipeline comprises an air inlet pipeline (110), a nitrogen purging pipeline (111), an exhaust pipeline (112), a connecting pipeline (113), a main drainage pipeline (114), an oxygen measuring pipeline (115), a hydrogen measuring pipeline (116) and a standard gas pipeline (117); the pipelines are connected with throttle valves (118); and the nitrogen purging pipeline (111) and the standard gas pipeline (117) are connected with a filtering pressure regulating valve (119).

3. The nuclear island exhaust system oxygen meter sampling and analyzing device of claim 2, wherein: the air inlet pipeline (110) is connected with a first condenser (103) and a nitrogen purging pipeline (111); the first condenser (103) is connected with a coarse filter (101); the coarse filter (101) is connected with an air suction pump (120); the air pump (120) is connected with a second condenser (104); a fine filter (102) is connected to the second condenser (104); the first condenser (103) and the second condenser (104) are both connected with a drain pipe (121); the drain pipe (121) is connected to a main drain line (114).

4. The nuclear island exhaust system oxygen meter sampling and analyzing device of claim 2, wherein: one end of the standard gas pipeline (117) is connected with the standard gas cylinder (105), and the other end is connected with a three-way valve (122); the three-way valve (122) is connected with a connecting pipeline (113) and a fine filter (102); the connecting pipeline (113) is connected with the oxygen measuring pipeline (115), the hydrogen measuring pipeline (116) and the exhaust pipeline (112); the oxygen measuring pipeline (115) is connected with the hydrogen measuring pipeline (116); and the hydrogen measuring pipeline (116) is connected with a flowmeter (123).