Automatic collection and discharge system and device for condensed water of radioactive gas sampling pipeline

Abstract

This invention belongs to the field of radioactive gas sampling and monitoring in nuclear power plants, and discloses an automatic collection and discharge system and device for condensate from radioactive gas sampling pipelines. The system includes a level monitoring unit, a collection control unit, and a drainage control unit. The output of the level monitoring unit is connected to the input of both the collection control unit and the drainage control unit, monitoring the condensate level signal and outputting the signal to both units. The collection control unit receives the level signal from the level monitoring unit and controls the collection of condensate based on the signal. The drainage control unit receives the level signal from the level monitoring unit and controls the discharge of condensate based on the signal. This invention achieves automatic collection and discharge of condensate without isolating the sampling and monitoring of shut-down instruments by setting up a dedicated automatic control-based condensate collection and discharge system within the condensate collection and discharge device.

Description

Technical Field

[0001] The invention belongs to the field of nuclear power plant radioactive gas sampling and monitoring, and in particular relates to a system and a device for automatically collecting and discharging condensed water of a radioactive gas sampling pipeline. Background Art

[0002] Nuclear power plant reactors produce radioactive gases through nuclear fission. In order to monitor the sealing of a circuit or the status of a process system, it is necessary to sample the gas medium from the system to an instrument for measurement.

[0003] Since many process systems in nuclear power plants are connected to heat sources, the gas medium sampled from the process system is usually at a higher temperature. When the gas medium in the sampling pipeline passes through a low-temperature area, condensed water is easily generated due to the temperature difference. Therefore, a dehydration device is installed on the sampling pipeline loop. However, the dehydration device currently used requires isolation and shutdown of instruments for sampling and monitoring, and requires system operators to visit the site regularly. Some areas are radiation contaminated areas, and manual drainage is required on site. Operators will spend a lot of time draining the on-site gas sampling and dehydration device, and there is a risk of personnel being injured by radiation. In addition, failure to drain the water in time may cause condensed water to enter the instrument and damage the instrument. Summary of the invention

[0004] The purpose of the present invention is to provide a system and device for automatically collecting and discharging condensed water of a radioactive gas sampling pipeline. By setting a special condensed water collection and discharge system based on automatic control in the condensed water collection and discharge device, automatic collection and discharge of condensed water can be achieved without isolating and shutting down instruments for sampling and monitoring.

[0005] A technical solution to achieve the purpose of the present invention: a system for automatically collecting and discharging condensed water from a radioactive gas sampling pipeline, the system comprising a liquid level monitoring unit, a collection control unit and a drainage control unit;

[0006] A liquid level monitoring unit, wherein the output end of the liquid level monitoring unit is respectively connected to the input end of the collection control unit and the input end of the drainage control unit, monitors the liquid level signal of the condensed water and outputs the liquid level signal to the collection control unit and the drainage control unit respectively;

[0007] A collection control unit receives a liquid level signal output by the liquid level monitoring unit and controls the collection of condensed water according to the liquid level signal;

[0008] The drainage control unit receives the liquid level signal output by the liquid level monitoring unit and controls the discharge of condensed water according to the liquid level signal.

[0009] Further, the liquid level monitoring unit includes a high liquid level H signal contact switch of the T2 condensate storage tank ultrasonic liquid level gauge, a normally closed contact group KT2-NC of the KT2 time relay, a KA1 relay, a normally open contact group KA1-NO of the KA1 relay, a low liquid level L signal contact switch of the T2 condensate storage tank ultrasonic liquid level gauge and a KA2 relay;

[0010] The normally open contact end of the high liquid level H signal contact switch of the T2 condensate storage tank ultrasonic level gauge is connected to the power supply +24V common end, the moving point end of the high liquid level H signal contact switch of the T2 condensate storage tank ultrasonic level gauge is connected to the normally closed contact end of the normally closed contact group KT2-NC of the KT2 time relay, the moving point end of the normally closed contact group KT2-NC of the KT2 time relay is connected to the power supply high potential end of the KA1 relay, and the power supply low potential end of the KA1 relay is connected to the 0V common end;

[0011] The normally open contact end of the normally open contact group KA1-NO of the KA1 relay is connected to the +24V common terminal, and the moving point end of the normally open contact group KA1-NO of the KA1 relay is connected to the normally closed contact end of the normally closed contact group KT2-NC of the KT2 time relay; the normally open contact end of the low liquid level L signal contact switch of the T2 condensate storage tank ultrasonic level gauge is connected to the moving point end of the normally closed contact group KT2-NC of the KT2 time relay, and the moving point end of the low liquid level L signal contact switch of the T2 condensate storage tank ultrasonic level gauge is connected to the high potential power supply end of the KA2 relay, and the low potential power supply end of the KA2 relay is connected to the 0V common terminal.

[0012] Furthermore, the collection control unit includes a normally closed contact group KA1-NC and V 1M The energized coil of the solenoid valve;

[0013] The normally closed contact end of the normally closed contact group KA1-NC of the KA1 relay is connected to the +24V common terminal, and the moving point end of the normally closed contact group KA1-NC of the KA1 relay is connected to V 1M The high potential end of the solenoid valve's energized coil, V 1M The low potential end of the power supply of the energized coil of the solenoid valve is connected to the 0V common end.

[0014] Furthermore, the drainage control unit includes a normally open contact group KT1-NO of a KT1 time relay, a normally closed contact group KA2-NC of a KA2 relay, and a V 2M The energized coil and V of the atmosphere-connected solenoid valve 3M The energized coil of the drain solenoid valve;

[0015] The normally open contact end of the normally open contact group KT1-NO of the KT1 time relay is connected to the +24V common terminal, the moving point end of the normally open contact group KT1-NO of the KT1 time relay is connected to the normally closed contact end of the normally closed contact group KA2-NC of the KA2 relay, and the moving point end of the normally closed contact group KA2-NC of the KA2 relay is connected in parallel to V 2M The energized coil and V of the atmosphere-connected solenoid valve 3M The high potential end of the power supply of the energized coil of the drain solenoid valve, V 2M The energized coil and V of the atmosphere-connected solenoid valve 3M The low potential end of the power supply of the energized coil of the drain solenoid valve is connected in parallel to the 0V common end.

[0016] Furthermore, the system further comprises a timing unit, and the timing unit comprises a first timing unit and a second timing unit;

[0017] The input end of the first timing unit is connected to the output end of the liquid level monitoring unit, and the output end of the first timing unit is connected to the input end of the drainage control unit to transmit the timing signal to the drainage control unit;

[0018] The input end of the second timing unit is connected to the output end of the drainage control unit, and the output end of the second timing unit is connected to the input end of the liquid level monitoring unit to transmit the timing signal to the liquid level monitoring unit.

[0019] Further, the first timing unit includes a normally open contact group KA1-NO of a KA1 relay and a KT1 time relay;

[0020] The normally open contact end of the normally open contact group KA1-NO of the KA1 relay is connected to the +24V common terminal, the moving point end of the normally open contact group KA1-NO of the KA1 relay is connected to the high potential power supply end of the KT1 time relay, and the low potential power supply end of the KT1 time relay is connected to the 0V common terminal.

[0021] Further, the second timing unit includes a normally open contact group KA2-NO of the KA2 relay and a KT2 time relay;

[0022] The normally open contact end of the normally open contact group KA2-NO of the KA2 relay is connected to the +24V common terminal, the moving point end of the normally open contact group KA2-NO of the KA2 relay is connected to the high potential power supply terminal of the KT2 time relay, and the low potential power supply terminal of the KT2 time relay is connected to the 0V common terminal.

[0023] A device for automatically collecting and discharging condensed water from a radioactive gas sampling pipeline, comprising an automatic condensed water collection and discharge system for a radioactive gas sampling pipeline, a T2 condensed water storage tank, a floor drain, a V 1M Solenoid valve, ultrasonic level gauge, V 2MAtmospheric communication solenoid valve and V 3M Drain solenoid valve; ultrasonic level meter is installed in T2 condensate storage tank; V 1M One end of the solenoid valve is connected to the outlet of the T1 gas sampling and water removal device, V 1M The other end of the solenoid valve is connected to the inlet of the T2 condensate storage tank; V 2M One end of the atmosphere-connected solenoid valve is connected to the top of the T2 condensate storage tank, V 2M The other end of the atmosphere-connected solenoid valve is connected to the atmosphere; V 3M One end of the drain solenoid valve is connected to the outlet of the T2 condensate storage tank, V 3M The other end of the drainage solenoid valve is communicated with the floor drain.

[0024] Furthermore, the device also includes a visual liquid level connector, a V4 manual isolation valve, a V5 manual atmospheric connection isolation valve and a V6 manual isolation valve; the V4 manual isolation valve and the V 1M Solenoid valves are connected in series and placed at V 1M Between the solenoid valve and T1 gas sampling and dehydration device; between V5 manual atmospheric connection isolation valve and V 2M The atmosphere-connected solenoid valve is connected in parallel, one end of the V5 manual atmosphere-connected isolation valve is connected to the top of the T2 condensate storage tank, and the other end of the V5 manual atmosphere-connected isolation valve is connected to the atmosphere; the V6 manual isolation valve is connected to the V 3M The drainage solenoid valve is connected in parallel, one end of the V6 manual isolation valve is connected to the outlet of the T2 condensate storage tank, and the other end of the V6 manual isolation valve is connected to the floor drain; the two ends of the visual liquid level connector are respectively connected to the lower end and the top end of the T2 condensate storage tank.

[0025] The beneficial technical effects of the present invention are:

[0026] (1) The device for automatically collecting and discharging condensed water of a radioactive gas sampling pipeline of the present invention can discharge condensed water without isolating or stopping the instrument for sampling and monitoring by setting up an automatic condensed water collection and discharge system, thereby realizing the continuous operation of the instrument and realizing the automatic drainage function of condensed water of the sampling system;

[0027] (2) The automatic condensate collection and discharge device for a radioactive gas sampling pipeline of the present invention reduces the workload of on-site operators and improves drainage efficiency;

[0028] (3) The condensate automatic collection and discharge device for a radioactive gas sampling pipeline of the present invention reduces the risk of operators entering some areas with high radiation levels and the risk of radiation contamination that may be caused during operation;

[0029] (4) The automatic condensate collection and discharge device for a radioactive gas sampling pipeline of the present invention eliminates the occurrence of condensate entering the instrument and damaging the instrument due to the operator's failure to drain the water in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a radioactive gas sampling pipeline drainage device in the prior art;

[0031] Figure 2 A circuit schematic diagram of a condensate automatic collection and discharge system for a radioactive gas sampling pipeline provided by the present invention;

[0032] Figure 3 This is a schematic structural diagram of a device for automatically collecting and discharging condensed water of a radioactive gas sampling pipeline provided by the present invention.

[0033] Figure 1 middle:

[0034] 1-V1 manual isolation valve;

[0035] 2-V2 manual atmospheric connection isolation valve;

[0036] 3-V3 manual isolation valve;

[0037] 4-T1 Gas sampling and water removal device;

[0038] 5-V4 manual isolation valve;

[0039] 6-Instrument.

[0040] Figure 2 middle:

[0041] 101-T2 condensate storage tank ultrasonic level gauge high level H signal contact switch;

[0042] 102-T2 condensate storage tank ultrasonic level gauge low level L signal contact switch;

[0043] 103-KA1 relay;

[0044] 104-KA2 relay;

[0045] 105-KT1 time relay;

[0046] 106-KT2 time relay;

[0047] 107-V 1M The energized coil of the solenoid valve;

[0048] 108-V 2M The energized coil of the atmosphere-connected solenoid valve;

[0049] 109-V3M The energized coil of the drain solenoid valve;

[0050] 110-KA1 relay’s normally open contact group KA1-NO;

[0051] 111-KA1 relay's normally closed contact group KA1-NC;

[0052] 112-KA2 relay’s normally open contact group KA2-NO;

[0053] 113-KA2 relay's normally closed contact group KA2-NC;

[0054] 114-KT1 time relay's normally open contact group KT1-NO;

[0055] 115-KT2 Normally closed contact KT2-NC of the time relay.

[0056] Figure 3 middle:

[0057] 1-V1 manual isolation valve;

[0058] 2-V2 manual atmospheric connection isolation valve;

[0059] 3-V3 manual isolation valve;

[0060] 4-T1 Gas sampling and water removal device;

[0061] 5-V4 manual isolation valve;

[0062] 6- Instrument;

[0063] 7-V5 manual atmosphere connection isolation valve;

[0064] 8-V 1M Solenoid valve;

[0065] 9-Ultrasonic level meter;

[0066] 10-V 2M Atmospheric communication solenoid valve;

[0067] 11-T2 condensate storage tank;

[0068] 12-Visual liquid level connector;

[0069] 13-V 3M Drain solenoid valve;

[0070] 14-V6 manual isolation valve;

[0071] 15-Floor drain. DETAILED DESCRIPTION

[0072] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0073] Example 1

[0074] like Figure 1 As shown, it is a radioactive gas sampling pipeline dewatering device in the prior art, including a V1 manual isolation valve 1, a V2 manual atmosphere connecting isolation valve 2, a V3 manual isolation valve 3, a T1 gas sampling dewatering device 4, a V4 manual dewatering isolation valve 5 and an instrument 6. One end of the V1 manual isolation valve 1 is connected to the radioactive gas sampling pipeline, and the other end of the V1 manual isolation valve 1 is connected to the inlet of the T1 gas sampling dewatering device 4; one end of the V2 manual atmosphere connecting isolation valve 2 is connected to the top of the T1 gas sampling dewatering device 4, and the other end of the V2 manual atmosphere connecting isolation valve 2 is connected to the atmosphere; one end of the V3 manual isolation valve 3 is connected to the inlet of the T1 gas sampling dewatering device 4, and the other end of the V3 manual isolation valve 3 is connected to the instrument 6; one end of the V4 manual dewatering isolation valve 5 is connected to the outlet of the T1 gas sampling dewatering device 4, and the other end of the V4 manual dewatering isolation valve 5 is connected to a container or device for receiving discharged condensed water.

[0075] The working process is as follows:

[0076] 1. When the sampling pipeline is in operation, the gas medium in the gas sampling system flows from left to right, wherein the V1 manual isolation valve 1 and the V3 manual isolation valve 3 are in the open state, while the V2 manual atmospheric linkage isolation valve 2 and the V4 manual drainage isolation valve 5 are in the closed state;

[0077] 2. When the gas medium flows through the T1 gas sampling and dehydration device 4, the gas medium collides with the inner wall of the device to generate and collect condensed water, and the gas after dehydration enters the instrument 6 at the rear end of the pipeline for measurement;

[0078] 3. When a certain amount of condensed water is collected in the T1 gas sampling and dehydration device 4, the operator closes the V1 manual isolation valve 1 and the V3 manual isolation valve 3, and the sampling medium of the instrument 6 is isolated and shut down; the V2 manual atmospheric linkage isolation valve 2 and the V4 manual drainage isolation valve 5 are opened, and the discharged condensed water is received by an external container through the gravity of the condensed water;

[0079] 4. After the drainage is completed, close the V4 manual drainage isolation valve 5 and the V2 manual atmospheric linkage isolation valve 2 in turn, open the manual V1 manual isolation valve 1 and the V3 manual isolation valve, the gas sampling medium enters the instrument 6, the instrument resumes measuring the gas sampling medium, and the manual drainage process ends.

[0080] Example 2

[0081] like Figure 2As shown, the present invention provides a system for automatically collecting and discharging condensed water of a radioactive gas sampling pipeline, comprising a liquid level monitoring unit, a collection control unit, a drainage control unit and a timing unit.

[0082] The liquid level monitoring unit has an output end connected to the input end of the collection control unit and the input end of the drainage control unit, monitors the liquid level signal of the condensed water and outputs the liquid level signal to the collection control unit and the drainage control unit respectively.

[0083] The liquid level monitoring unit includes the T2 condensate storage tank ultrasonic liquid level meter high liquid level H signal contact switch 101, the normally closed contact group KT2-NC115 of the KT2 time relay, the KA1 relay 103, the normally open contact group KA1-NO110 of the KA1 relay, the T2 condensate storage tank ultrasonic liquid level meter low liquid level L signal contact switch 102 and the KA2 relay 104.

[0084] The normally open contact end of the T2 condensate storage tank ultrasonic level gauge high liquid level H signal contact switch 101 is connected to the power supply +24V common end, the moving point end of the T2 condensate storage tank ultrasonic level gauge high liquid level H signal contact switch 101 is connected to the normally closed contact end of the normally closed contact group KT2-NC115 of the KT2 time relay, the moving point end of the normally closed contact group KT2-NC115 of the KT2 time relay is connected to the high potential power supply end of the KA1 relay 103, and the low potential power supply end of the KA1 relay 103 is connected to the 0V common end.

[0085] The normally open contact end of the normally open contact group KA1-NO110 of the KA1 relay is connected to the +24V common terminal, and the moving point end of the normally open contact group KA1-NO110 of the KA1 relay is connected to the normally closed contact end of the normally closed contact group KT2-NC115 of the KT2 time relay; the normally open contact end of the T2 condensate storage tank ultrasonic liquid level gauge low liquid level L signal contact switch 102 is connected to the moving point end of the KT2 time relay normally closed contact group KT2-NC115, and the moving point end of the T2 condensate storage tank ultrasonic liquid level gauge low liquid level L signal contact switch 102 is connected to the high potential power supply end of the KA2 relay 104, and the low potential power supply end of the KA2 relay 104 is connected to the 0V common terminal.

[0086] The collection control unit receives the liquid level signal output by the liquid level monitoring unit and controls the collection of condensed water according to the liquid level signal.

[0087] The collection control unit includes the normally closed contact group KA1-NC111 of the KA1 relay and V 1M The energized coil 107 of the solenoid valve.

[0088] The normally closed contact end of the normally closed contact group KA1-NC111 of the KA1 relay is connected to the +24V common terminal, and the moving point end of the normally closed contact group KA1-NC 111 of the KA1 relay is connected to V 1M The energized coil 107 of the solenoid valve supplies a high potential terminal, V 1M The low potential end of the power supply of the energized coil 107 of the solenoid valve is connected to the 0V common end.

[0089] The drainage control unit receives the liquid level signal output by the liquid level monitoring unit and controls the discharge of condensed water according to the liquid level signal.

[0090] The drainage control unit includes the normally open contact group KT1-NO114 of the KT1 time relay, the normally closed contact group KA2-NC113 of the KA2 relay, and the V 2M The energized coil 108 and V 3M The energized coil 109 of the drain solenoid valve.

[0091] The normally open contact end of the normally open contact group KT1-NO114 of the KT1 time relay is connected to the +24V common terminal, the moving point end of the normally open contact group KT1-NO114 of the KT1 time relay is connected to the normally closed contact end of the normally closed contact group KA2-NC113 of the KA2 relay, and the moving point end of the normally closed contact group KA2-NC113 of the KA2 relay is connected in parallel to V 2M The energized coil 108 and V 3M The power supply high potential end of the energized coil 109 of the drain solenoid valve, V 2M The energized coil 108 and V 3M The power supply low potential end of the energized coil 109 of the drain solenoid valve is connected in parallel to the 0V common end.

[0092] The timing unit includes a first timing unit and a second timing unit.

[0093] The input end of the first timing unit is connected to the output end of the liquid level monitoring unit, and the output end of the first timing unit is connected to the input end of the drainage control unit to transmit the timing signal to the drainage control unit.

[0094] The first timing unit includes a normally open contact group KA1-NO110 of a KA1 relay and a KT1 time relay 105. The normally open contact end of the normally open contact group KA1-NO110 of the KA1 relay is connected to the +24V common terminal, the moving point end of the normally open contact group KA1-NO 110 of the KA1 relay is connected to the high potential power supply end of the KT1 time relay 105, and the low potential power supply end of the KT1 time relay 105 is connected to the 0V common terminal.

[0095] The input end of the second timing unit is connected to the output end of the drainage control unit, and the output end of the second timing unit is connected to the input end of the liquid level monitoring unit to transmit the timing signal to the liquid level monitoring unit.

[0096] The second timing unit includes a normally open contact group KA2-NO112 of the KA2 relay and a KT2 time relay 106. The normally open contact end of the normally open contact group KA2-NO112 of the KA2 relay is connected to the +24V common terminal, the moving point end of the normally open contact group KA2-NO112 of the KA2 relay is connected to the high potential power supply terminal of the KT2 time relay 106, and the low potential power supply terminal of the KT2 time relay 106 is connected to the 0V common terminal.

[0097] In this embodiment, the model of KA1 relay 103 is relay LY2N-J DC24V (2 sets of single-pole double-throw relays), the model of KA2 relay 104 is relay LY2N-J DC24V (2 sets of single-pole double-throw relays), the model of KT1 time relay 105 is time relay H3Y-2-C (DC 24V, maximum delay 60s), the model of KT2 time relay 106 is time relay H3Y-2-C (DC 24V, maximum delay 60s), V 1M The energized coil 107 of the solenoid valve, V 2M The energized coil of the atmosphere-connected solenoid valve, V 3M The energized coil 109 of the drain solenoid valve is a 2S160-15 solenoid valve.

[0098] like Figure 2 As shown in the figure, the working principle of the automatic collection and discharge system of condensed water of a radioactive gas sampling pipeline is as follows:

[0099] (1) When the water level in the T2 condensate storage tank 11 continues to rise and reaches the high water level H, the high liquid level H switch signal contact 101 of the T2 condensate storage tank ultrasonic level gauge is closed;

[0100] (2) The high level H switch signal contact 101 of the ultrasonic level gauge of the condensate storage tank T2 is closed, which powers on the KA1 relay 103 and disconnects the normally closed contact group KA1-NC 111 of the KA1 relay, controlling the closing of V 1M Solenoid valve 107; KA1 relay normally open contact group KA1-NO 110 is closed;

[0101] (3) The high level H switch signal contact 101 of the ultrasonic level gauge of the condensate storage tank T2 is closed and the KT1 time relay 105 is powered on. After a delay of 5 seconds, the normally open contact group KT1-NO 114 of the KT1 time relay 105 is closed, and the power-on control opens V 2M Atmosphere connected solenoid valve 108 and V 3MDrain solenoid valve 109, condensed water is discharged by its own gravity;

[0102] (4)V 2M Atmosphere connected solenoid valve 108 and V 3M After the drain solenoid valve 109 is opened, the liquid level of the T2 condensate storage tank gradually decreases. When the water level drops below the high water level H position, the high liquid level H switch signal contact 101 of the T2 condensate storage tank ultrasonic level gauge is disconnected again; when the liquid level of the T2 condensate storage tank 11 is lower than the low water level L position, the low liquid level L switch signal contact 102 of the T2 condensate storage tank ultrasonic level gauge is closed;

[0103] (5) The low liquid level L switch signal contact 102 of the ultrasonic level gauge of the condensate tank T2 is closed, so that the KA2 relay 104 is powered on, the KA2 relay KA2-NC normally closed contact group 113 is opened, and the KA2-NO normally open contact group 112 is closed;

[0104] (6) KA2 relay KA2-NC normally closed contact group 113 is disconnected, making V 2M Atmosphere connected solenoid valve 108 and V 3M The drain solenoid valve 109 is closed, and the KA2-NO normally open contact group 112 is closed, so that the KT2 time relay 106 is powered on;

[0105] (7) After the KT2 time relay 106 is powered on, a delay of 5 seconds is applied, the normally closed contact group KT2-NC 115 of the KT2 time relay is disconnected, the KA1 relay 103 and the KA2 relay 104 lose power, and all relays return to their initial state. Since the normally closed contact group KA1-NC111 of the KA1 relay returns to the closed state, V 1M The solenoid valve 107 is powered on and restored to the open state, and the entire condensate water automatic drainage control process ends;

[0106] (8) The condensed water in the radioactive sampling pipeline is periodically automatically stored and drained according to the control process of steps (1)-(7).

[0107] Example 3

[0108] like Figure 3 As shown, the present invention provides an automatic condensate collection and discharge device for a radioactive gas sampling pipeline, including the automatic condensate collection and discharge system for a radioactive gas sampling pipeline of Example 2, including the V1 manual isolation valve 1, the V2 manual atmosphere connection isolation valve 2, the V3 manual isolation valve 3, the T1 gas sampling water removal device 4, the V4 manual drainage isolation valve 5 and the instrument 6 in the device of Example 1, and also includes the V4 manual isolation valve 5, the V5 manual atmosphere connection isolation valve 7, the V 1M Solenoid valve 8, ultrasonic level meter 9, V 2MAtmospheric connection solenoid valve 10, T2 condensate storage tank 11, visual liquid level connector 12, V 3M Drain solenoid valve 13, V6 manual isolation valve 14 and floor drain 15.

[0109] One end of the V1 manual isolation valve 1 is connected to the radioactive gas sampling pipeline, and the other end of the V1 manual isolation valve 1 is connected to the inlet of the T1 gas sampling and dehydration device 4; one end of the V2 manual atmosphere connecting isolation valve 2 is connected to the top of the T1 gas sampling and dehydration device 4, and the other end of the V2 manual atmosphere connecting isolation valve 2 is connected to the atmosphere; one end of the V3 manual isolation valve 3 is connected to the inlet of the T1 gas sampling and dehydration device 4, and the other end of the V3 manual isolation valve 3 is connected to the instrument 6.

[0110] One end of the V4 manual drain isolation valve 5 is connected to the outlet of the T1 gas sampling and water removal device 4, and the other end of the V4 manual drain isolation valve 5 is connected to the V 1M One end of the solenoid valve 8 is connected to V 1M The other end of the solenoid valve 8 is connected to the inlet of the T2 condensate storage tank 11; V 2M One end of the atmosphere-connected solenoid valve 10 is connected to the top of the T2 condensate storage tank 11, V 2M The other end of the atmosphere communication solenoid valve 10 is connected to the atmosphere; the V5 manual atmosphere communication isolation valve 7 is connected to V 2M The atmosphere-connecting solenoid valve 10 is connected in parallel, one end of the V5 manual atmosphere-connecting isolation valve 7 is connected to the top of the T2 condensate storage tank 11, and the other end of the V5 manual atmosphere-connecting isolation valve 7 is connected to the atmosphere.

[0111] V 3M One end of the drain solenoid valve 13 is connected to the outlet of the T2 condensate storage tank 11, V 3M The other end of the drain solenoid valve 13 is connected to the floor drain 15; the V6 manual isolation valve 14 is connected to the V 3M The drainage solenoid valve 13 is connected in parallel, one end of the V6 manual isolation valve 14 is connected to the outlet of the T2 condensate storage tank 11 , and the other end of the V6 manual isolation valve 14 is connected to the floor drain 15 .

[0112] The ultrasonic level meter 9 is arranged in the T2 condensate storage tank 11; the two ends of the visual level connector 12 are respectively connected to the lower end and the top end of the T2 condensate storage tank 11.

[0113] like Figure 3 As shown, the working process of the automatic condensate collection and discharge device for a radioactive gas sampling pipeline of the present invention is as follows:

[0114] (A1) The gas medium flows from left to right in the gas sampling system, wherein the V1 manual isolation valve 1, the V3 manual isolation valve 3, and the V4 manual isolation valve 5 are in the open state, and the V2 manual atmospheric linkage isolation valve 2 is in the closed state;

[0115] (A2) The gas medium flows through the T1 gas sampling and dehydration device 4 to produce condensed water, and the dehydrated gas enters the instrument 6 at the rear end of the pipeline for measurement;

[0116] (A3) V5 manual atmospheric connection isolation valve 7, V 2M Atmospheric communication solenoid valve 10, V 3M The drain solenoid valve 13 and the V6 manual isolation valve 14 are in the closed state; the V4 manual isolation valve 5 and V 1M The solenoid valve 8 is in an open state, and the condensed water generated in the T1 gas sampling and water removal device 4 flows into the T2 condensed water storage tank 11 in the dotted frame by its own gravity;

[0117] (A4) An ultrasonic level meter 9 is installed on the top of the T2 condensate collection tank 11 to measure the liquid level height. Different liquid level alarm output signals can be set according to the operation requirements. In this embodiment, high and low liquid level alarms are set to control the switch-related solenoid valves;

[0118] (A5) When the condensed water generated by the T1 gas sampling and dehydration device 4 continuously flows into the T2 condensed water storage tank 11, the liquid level continuously rises. When it reaches the high water level H position 16, the high water level H alarm signal is sent through the condensed water automatic collection and discharge system to close V 1M Solenoid valve 8, open V 2M Atmosphere connected solenoid valve 10 and V 3M Drain solenoid valve 13;

[0119] (A6)V 2M After the atmosphere connection solenoid valve 10 is opened, the T2 condensate storage tank 11 is connected to the atmosphere, and the condensate is gradually discharged into the connected floor drain 15 by its own gravity;

[0120] (A7) When the liquid level drops to the low water level L position 17 during drainage, the low water level L alarm signal is sent through the condensate automatic collection and discharge system to close V 2M Atmosphere connected solenoid valve 10 and V 3M Drain solenoid valve 13, open V 1M Solenoid valve 8;

[0121] (A8) A complete automatic storage and drainage process is completed, and the next cycle collects and discharges condensed water according to the above process.

[0122] In addition, the device also takes into account the drainage function under emergency conditions. When the condensate automatic collection and discharge system fails and cannot be automatically drained, the condensate level of the T2 condensate storage tank 11 is judged by the visual liquid level connector 12. If the condensate level is high, drainage under emergency conditions can be achieved in the following ways:

[0123] (B1) Close the V4 manual isolation valve 5, open the V5 manual atmosphere connection isolation valve 7, and open the V6 manual isolation valve 14 in sequence;

[0124] (B2) Check that the liquid level of the visual liquid level connector 12 drops. If there is no water level, it means that the water in the T2 condensate storage tank 11 has been drained;

[0125] (B3) Close the V6 manual isolation valve 14 and the V5 manual atmosphere connecting isolation valve 7 in sequence, and open the V4 manual isolation valve 5.

[0126] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A system for automatically collecting and discharging condensed water from a radioactive gas sampling pipeline, characterized in that: The system includes a liquid level monitoring unit, a collection control unit and a drainage control unit; A liquid level monitoring unit, wherein the output end of the liquid level monitoring unit is respectively connected to the input end of the collection control unit and the input end of the drainage control unit, monitors the liquid level signal of the condensed water and outputs the liquid level signal to the collection control unit and the drainage control unit respectively; A collection control unit receives a liquid level signal output by the liquid level monitoring unit and controls the collection of condensed water according to the liquid level signal; A drainage control unit receives a liquid level signal output by a liquid level monitoring unit and controls the discharge of condensed water according to the liquid level signal; the liquid level monitoring unit comprises a high liquid level H signal contact switch (101) of an ultrasonic liquid level gauge of a T2 condensed water storage tank, a normally closed contact group KT2-NC (115) of a KT2 time relay, a KA1 relay (103), a normally open contact group KA1-NO (110) of a KA1 relay, a low liquid level L signal contact switch (102) of an ultrasonic liquid level gauge of a T2 condensed water storage tank, and a KA2 relay (104); The normally open contact end of the high liquid level H signal contact switch (101) of the T2 condensate storage tank ultrasonic liquid level gauge is connected to the power supply +24V common end, the moving point end of the high liquid level H signal contact switch (101) of the T2 condensate storage tank ultrasonic liquid level gauge is connected to the normally closed contact end of the normally closed contact group KT2-NC (115) of the KT2 time relay, the moving point end of the normally closed contact group KT2-NC (115) of the KT2 time relay is connected to the power supply high potential end of the KA1 relay (103), and the power supply low potential end of the KA1 relay (103) is connected to the 0V common end; The normally open contact end of the normally open contact group KA1-NO (110) of the KA1 relay is connected to the +24V common terminal, and the moving point end of the normally open contact group KA1-NO (110) of the KA1 relay is connected to the normally closed contact end of the normally closed contact group KT2-NC (115) of the KT2 time relay; the normally open contact end of the T2 condensate storage tank ultrasonic liquid level meter low liquid level L signal contact switch (102) is connected to the moving point end of the normally closed contact group KT2-NC (115) of the KT2 time relay, the moving point end of the T2 condensate storage tank ultrasonic liquid level meter low liquid level L signal contact switch (102) is connected to the power supply high potential end of the KA2 relay (104), and the power supply low potential end of the KA2 relay (104) is connected to the 0V common terminal; The collection control unit includes a normally closed contact group KA1-NC (111) of the KA1 relay and a V 1M An energized coil (107) of the solenoid valve; The normally closed contact end of the normally closed contact group KA1-NC (111) of the KA1 relay is connected to the +24V common terminal, and the moving point end of the normally closed contact group KA1-NC (111) of the KA1 relay is connected to V 1M The energized coil (107) of the solenoid valve supplies a high potential terminal, V 1M The low potential end of the power supply of the energized coil (107) of the electromagnetic valve is connected to the 0V common end; The drainage control unit includes a normally open contact group KT1-NO (114) of a KT1 time relay, a normally closed contact group KA2-NC (113) of a KA2 relay, and a V 2M The energized coil (108) of the atmosphere-connected solenoid valve and V 3M An energized coil (109) of a drain solenoid valve; The normally open contact end of the normally open contact group KT1-NO (114) of the KT1 time relay is connected to the +24V common terminal, the moving point end of the normally open contact group KT1-NO (114) of the KT1 time relay is connected to the normally closed contact end of the normally closed contact group KA2-NC (113) of the KA2 relay, and the moving point end of the normally closed contact group KA2-NC (113) of the KA2 relay is connected in parallel to V 2M The energized coil (108) of the atmosphere-connected solenoid valve and V 3M The high potential end of the power supply of the energized coil (109) of the drain solenoid valve, V 2M The energized coil (108) of the atmosphere-connected solenoid valve and V 3M The low potential end of the power supply of the energized coil (109) of the drainage solenoid valve is connected in parallel to the 0V common end.

2. The automatic condensate collection and discharge system for a radioactive gas sampling pipeline according to claim 1 is characterized in that: The system further comprises a timing unit, the timing unit comprising a first timing unit and a second timing unit; The input end of the first timing unit is connected to the output end of the liquid level monitoring unit, and the output end of the first timing unit is connected to the input end of the drainage control unit to transmit the timing signal to the drainage control unit; The input end of the second timing unit is connected to the output end of the drainage control unit, and the output end of the second timing unit is connected to the input end of the liquid level monitoring unit to transmit the timing signal to the liquid level monitoring unit.

3. The automatic condensate collection and discharge system for a radioactive gas sampling pipeline according to claim 2 is characterized in that: The first timing unit comprises a normally open contact group KA1-NO (110) of a KA1 relay and a KT1 time relay (105); The normally open contact end of the normally open contact group KA1-NO (110) of the KA1 relay is connected to the +24V common terminal, the moving point end of the normally open contact group KA1-NO (110) of the KA1 relay is connected to the high potential power supply end of the KT1 time relay (105), and the low potential power supply end of the KT1 time relay (105) is connected to the 0V common terminal.

4. The automatic condensate collection and discharge system for a radioactive gas sampling pipeline according to claim 2 is characterized in that: The second timing unit comprises a normally open contact group KA2-NO (112) of a KA2 relay and a KT2 time relay (106); The normally open contact end of the normally open contact group KA2-NO (112) of the KA2 relay is connected to the +24V common terminal, the moving point end of the normally open contact group KA2-NO (112) of the KA2 relay is connected to the high potential power supply end of the KT2 time relay (106), and the low potential power supply end of the KT2 time relay (106) is connected to the 0V common terminal.

5. An automatic condensate collection and discharge device for a radioactive gas sampling pipeline, characterized in that: The device comprises the condensate automatic collection and discharge system for the radioactive gas sampling pipeline according to any one of claims 1 to 4, and also comprises a T2 condensate storage tank (11), a floor drain (15), a V 1M Solenoid valve (8), ultrasonic level meter (9), V 2M Atmosphere connected solenoid valve 10 and V 3M Drain solenoid valve (13); ultrasonic level meter (9) is arranged in T2 condensate storage tank (11); V 1M One end of the solenoid valve (8) is connected to the outlet of the T1 gas sampling and water removal device (4), V 1M The other end of the solenoid valve (8) is connected to the inlet of the T2 condensate storage tank (11); V 2M One end of the atmosphere-connected solenoid valve (10) is connected to the top of the T2 condensate storage tank (11), V 2M The other end of the atmosphere communication solenoid valve (10) is communicated with the atmosphere; V 3M One end of the drain solenoid valve (13) is connected to the outlet of the T2 condensate storage tank (11), V 3M The other end of the drainage solenoid valve (13) is communicated with the floor drain (15).

6. The automatic condensate collection and discharge device for a radioactive gas sampling pipeline according to claim 5, characterized in that: The device further comprises a visual liquid level connector (12), a V4 manual isolation valve (5), a V5 manual atmospheric connection isolation valve (7) and a V6 manual isolation valve (14); the V4 manual isolation valve (5) and the V 1M Solenoid valve (8) is connected in series and arranged at V 1M between the solenoid valve (8) and the T1 gas sampling and dehydration device (4); between the V5 manual atmospheric communication isolation valve (7) and the V 2M The atmosphere connecting solenoid valve (10) is connected in parallel, one end of the V5 manual atmosphere connecting isolation valve (7) is connected to the top of the T2 condensate storage tank (11), and the other end of the V5 manual atmosphere connecting isolation valve (7) is connected to the atmosphere; the V6 manual isolation valve (14) is connected to the V 3M The drainage solenoid valve (13) is connected in parallel, one end of the V6 manual isolation valve (14) is connected to the outlet of the T2 condensate storage tank (11), and the other end of the V6 manual isolation valve (14) is connected to the floor drain (15); the two ends of the visible liquid level connector (12) are respectively connected to the lower end and the top end of the T2 condensate storage tank (11).

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