CN209764355U - Nuclear power station gate sealing element sealing performance test device - Google Patents
Nuclear power station gate sealing element sealing performance test device Download PDFInfo
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- CN209764355U CN209764355U CN201920256053.8U CN201920256053U CN209764355U CN 209764355 U CN209764355 U CN 209764355U CN 201920256053 U CN201920256053 U CN 201920256053U CN 209764355 U CN209764355 U CN 209764355U
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Abstract
The utility model relates to a nuclear power station gate sealing element tightness test device, a first gas storage tank and a second gas storage tank are communicated through a second gas pipe, and a stop valve is arranged in the second gas pipe; the first gas storage tank is communicated with a gas source through a first connecting pipe and is connected with a first pressure gauge, the first pressure gauge is used for measuring the gas pressure in the first gas storage tank, the first gas storage tank is communicated with an exhaust pipe, and an exhaust valve is arranged in the exhaust pipe; the second gas storage tank is connected with a second pressure gauge, the second pressure gauge is used for measuring the gas pressure in the second gas storage tank, and the second gas storage tank is communicated with the gate sealing device. The gate sealing element tightness test device can judge whether the tightness of the sealing element of the sealing device meets the requirement or not, so that the problem that the overall leakage rate of a gate exceeds the standard due to unqualified tightness of the gate is avoided.
Description
Technical Field
The utility model relates to a gate sealing member leakproofness detects technical field, specific nuclear power station gate sealing member leakproofness test device that says so.
Background
The nuclear power plant reactor plant gate is an important component of a containment safety barrier, and can prevent radioactive substances from leaking and limit ionizing radiation from leaking while meeting the safety of personnel and equipment in a nuclear island plant. Due to the special position and the application of the gate, sealing elements are designed for all mechanical penetrating pieces, electric pipe fittings and the like of the gate. The sealing element is damaged in different degrees after the gate is used for a certain time, the sealing property of the gate cannot be guaranteed, the leakage rate of the gate exceeds the standard, and the safety barrier of the whole containment vessel fails. Therefore, the sealing performance of the gate seal needs to be checked periodically.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a nuclear power station gate sealing member leakproofness test device, the device can regularly check the leakproofness of gate sealing member, ensures the gate leakproofness.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the utility model provides a nuclear power station gate sealing member leakproofness test device which characterized by: the gas storage device comprises a first gas storage tank and a second gas storage tank, wherein the first gas storage tank and the second gas storage tank are communicated through a second gas pipe, and a stop valve is arranged in the second gas pipe;
the first gas storage tank is communicated with a gas source through a first connecting pipe and is connected with a first pressure gauge, the first pressure gauge is used for measuring the gas pressure in the first gas storage tank, the first gas storage tank is communicated with an exhaust pipe, and an exhaust valve is arranged in the exhaust pipe;
The second gas storage tank is connected with a second pressure gauge, the second pressure gauge is used for measuring the gas pressure in the second gas storage tank, and the second gas storage tank is communicated with the gate sealing device.
The first gas storage tank is connected with the first pressure gauge through a first gas pipe, a gas inlet pipe is arranged on the side wall of the first gas storage tank, a gas inlet valve is arranged in the gas inlet pipe, one end of the gas inlet pipe is communicated with the first gas storage tank, a gas inlet pipe joint is arranged at the other end of the gas inlet pipe, the gas inlet pipe joint is communicated with one end of a first connecting pipe, and the other end of the first connecting pipe is communicated with a gas source.
The side wall of the first air storage tank is provided with a standby exhaust port, and a detachable sealing device is arranged in the standby exhaust port.
the spare exhaust port is internally provided with threads, the sealing device is a sealing bolt, and the sealing bolt is in threaded connection with the spare exhaust port.
The second gas storage tank is connected with a second pressure gauge through a third gas pipe, a fourth gas pipe is arranged on the side wall of the second gas storage tank, one end of the fourth gas pipe is communicated with the second gas storage tank, the other end of the fourth gas pipe is communicated with one end of a second connecting pipe, and the other end of the second connecting pipe is communicated with a gate sealing device.
and a self-locking joint is arranged at one end of the fourth air pipe communicated with the second connecting pipe, and the second connecting pipe is fixedly connected with the self-locking joint.
The gate sealing device is internally provided with a sealing element, the side wall of the gate sealing device is provided with an inflating device, the inflating device comprises an inflating opening and an inflating opening connecting pipe, the inflating opening connecting pipe is in threaded connection with the inflating opening, the inflating opening connecting pipe protrudes out of the outer wall of the gate sealing device, and the second connecting pipe is communicated with the inflating opening connecting pipe.
the bottom of the second gas storage tank is fixedly connected with the supporting plate, and the bottom end of the supporting plate is fixedly connected with the base.
The nuclear power station gate sealing element tightness test device has the following beneficial effects: the device is simple in structure and easy to operate, when the device is used, the air pipes connected with the two air storage tanks are firmly connected with the air inlet and the air outlet, the opening and closing states of the stop valves are checked, test gas with specified pressure is filled according to test requirements, pressure maintaining is carried out for a certain time according to the requirements, and the pressure change condition is observed and recorded. The device can accurately measure the pressure change condition in the gate sealing device under the specified pressure and within the specified time, and judge whether the sealing performance of the sealing device sealing element meets the requirement or not through calculation. Therefore, the problem that the whole leakage rate of the gate exceeds the standard due to unqualified gate sealing performance is avoided.
Drawings
Fig. 1 is the utility model discloses a nuclear power station gate sealing member leakproofness test device's schematic structure diagram.
Fig. 2 is a front view of the utility model discloses a nuclear power station gate sealing member leakproofness test device.
Fig. 3 is a side view of the utility model discloses a nuclear power station gate sealing member leakproofness test device.
fig. 4 is the utility model discloses a nuclear power station gate sealing member leakproofness test device's top view.
The attached drawings of the specification are marked as follows: 1. a first gas storage tank; 2. a first air pipe; 3. a first pressure gauge; 4. a large gas storage tank exhaust pipe; 5. an exhaust valve; 6. a stop valve; 7. a second air pipe; 8. a third air pipe; 9. a second pressure gauge; 10. a self-locking air pipe joint; 11. a fourth gas pipe; 12. a second gas tank; 13. a support plate; 14. a base; 15. an intake valve; 16. an air inlet pipe joint; 17. an air inlet pipe; 18. a spare exhaust port; 19. a gas source; 20. a first connecting pipe; 21. a second connecting pipe; 22. an inflator; 23. an inflation inlet; 24. an inflation inlet connecting pipe; 25. a gate sealing device; 26. and a seal.
Detailed Description
the invention is further described below with reference to the drawings and specific preferred embodiments.
As shown in fig. 1, the device for testing the sealing performance of the nuclear power station gate sealing element is characterized in that: the gas storage device comprises a first gas storage tank 1 and a second gas storage tank 12, wherein the first gas storage tank 1 is communicated with the second gas storage tank 12 through a second gas pipe 7, and a stop valve 6 is arranged in the second gas pipe 7;
The first gas storage tank 1 is communicated with a gas source 19 through a first connecting pipe 20, the first gas storage tank 1 is connected with a first pressure gauge 3, the first pressure gauge 3 is used for measuring the gas pressure in the first gas storage tank 1, the first gas storage tank 1 is communicated with an exhaust pipe 4, and an exhaust valve 5 is arranged in the exhaust pipe 4;
The second gas storage tank 12 is connected with a second pressure gauge 9, the second pressure gauge 9 is used for measuring the gas pressure in the second gas storage tank 12, and the second gas storage tank 12 is communicated with a gate sealing device 25.
In this embodiment, first gas holder 1 is connected with first manometer 3 through first trachea 2, 1 lateral wall of first gas holder on be provided with intake pipe 17, intake pipe 17 in be provided with admission valve 15, intake pipe 17 one end and first gas holder 1 intercommunication, the other end is provided with intake pipe joint 16, intake pipe joint 16 and 20 one end intercommunication of first connecting pipe, the 20 other ends of first connecting pipe and 19 intercommunications of air supply.
In this embodiment, a spare exhaust port 18 is disposed on a side wall of the first air tank 1, and a removable sealing device is disposed in the spare exhaust port 18.
In this embodiment, the inner surface of the spare exhaust port 18 is threaded, the sealing device is a sealing bolt, and the sealing bolt is in threaded connection with the spare exhaust port 18.
in this embodiment, the second gas container 12 is connected with the second pressure gauge 9 through the third gas pipe 8, the side wall of the second gas container 12 is provided with the fourth gas pipe 11, one end of the fourth gas pipe 11 is communicated with the second gas container 12, the other end of the fourth gas pipe is communicated with one end of the second connecting pipe 21, and the other end of the second connecting pipe 21 is communicated with the gate sealing device 25.
In this embodiment, a self-locking joint 10 is disposed at one end of the fourth air tube 11, which is communicated with the second connecting tube 21, and the second connecting tube 21 is fixedly connected with the self-locking joint 10.
in this embodiment, a sealing element 26 is disposed in the gate sealing device 25, an inflation device 22 is disposed on a side wall of the gate sealing device 25, the inflation device 22 includes an inflation inlet 23 and an inflation inlet connecting pipe 24, the inflation inlet connecting pipe 24 and the inflation inlet 23 are connected by a thread, the inflation inlet connecting pipe 24 protrudes out of an outer wall of the gate sealing device 25, and the second connecting pipe 21 is communicated with the inflation inlet connecting pipe 24.
In this embodiment, the bottom of the second air tank 12 is fixedly connected to the supporting plate 13, and the bottom end of the supporting plate 13 is fixedly connected to the base 14.
in this embodiment, the internal air storage space volume of the first air tank 1 is larger than the internal air storage space volume of the second air tank 12.
When the sealing performance of the gate sealing device 25 is detected, the air pipes connected with the two air storage tanks are firmly connected with the air inlet and the air outlet, the opening and closing states of the stop valves are detected, test gas with specified pressure is filled according to test requirements, pressure maintaining is carried out for a certain time according to the requirements, and the pressure change condition is observed and recorded. The device can accurately measure the pressure change condition in the gate sealing device under the specified pressure and within the specified time, and judge whether the sealing performance of the sealing element of the gate sealing device 25 meets the requirement or not through calculation, and the specific steps are as follows:
Firstly, closing an exhaust valve 5 and an intake valve 15 of a first air storage tank 1, and connecting an air source 19 and an intake pipe joint 16 through a first connecting pipe 20;
Secondly, the second gas storage tank 12 is connected with one end of a second connecting pipe 21 through a self-locking joint 10, and the other end of the second connecting pipe 21 is connected with an inflating device 22 of a gate sealing device 25;
thirdly, opening a stop valve 6 in a second air pipe 7 connecting the first air storage tank 1 and the second air storage tank 12;
a fourth step of opening an air inlet valve 15 in an air inlet pipe 17 connected to the first air storage tank 1, injecting test gas of a prescribed pressure into the test apparatus, and then closing the air inlet valve 15;
Fifthly, selecting to open or close the stop valve 6 according to the size of the detected gate sealing device 25 so as to ensure a proper pressure maintaining space required by the test;
The pressure maintaining space is a sealing space formed by the gate sealing device 25, the second connecting pipe 21 and the selected gas storage tank, when the volume of the gate sealing device 25 is smaller, the stop valve 6 is closed, and when the volume of the gate sealing device 25 is larger, the stop valve 6 is opened;
Sixthly, after the gas pressure in the pressure maintaining space is stable, recording the pressure change delta Pt and the environment temperature T in the specified test time T, calculating the allowable pressure drop delta P of the sealing element 26 in the gate sealing device 25 in the specified test time under the conditions of the environment temperature T, the pressure maintaining volume V and the test pressure P through an ideal gas state equation, and judging whether the sealing element of the gate sealing device meets the sealing requirement or not by comparing the size of the delta Pt with the size of the delta P, wherein the calculation equation is as follows:
［（P+Po）·V/(273+T)］－Po·q·t/273=（Pt+Po）·V/（273+T） （1）
△P=P－Pt （2）
Wherein P is the pressure at the start of the test (10 5 Pa, gauge pressure), Po is the standard atmospheric pressure, Q is the allowable leakage rate of the seal 26 of the given gate seal device, T is the test duration, Pt is the residual pressure in the holding pressure volume (10 5 Pa, gauge pressure) when the test duration is T, Δ P is the allowable pressure drop under the test conditions, V is the holding pressure volume, T is the test temperature, DEG C;
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a nuclear power station gate sealing member leakproofness test device which characterized by: the gas storage device comprises a first gas storage tank (1) and a second gas storage tank (12), wherein the first gas storage tank (1) and the second gas storage tank (12) are communicated through a second gas pipe (7), and a stop valve (6) is installed in the second gas pipe (7);
The first gas storage tank (1) is communicated with a gas source (19) through a first connecting pipe (20), the first gas storage tank (1) is connected with a first pressure gauge (3), the first pressure gauge (3) is used for measuring the gas pressure in the first gas storage tank (1), the first gas storage tank (1) is communicated with an exhaust pipe (4), and an exhaust valve (5) is arranged in the exhaust pipe (4);
The second gas storage tank (12) is connected with a second pressure gauge (9), the second pressure gauge (9) is used for measuring the gas pressure in the second gas storage tank (12), and the second gas storage tank (12) is communicated with the gate sealing device (25).
2. The device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 1, wherein: first gas holder (1) be connected with first manometer (3) through first trachea (2), first gas holder (1) lateral wall on be provided with intake pipe (17), intake pipe (17) in be provided with admission valve (15), intake pipe (17) one end and first gas holder (1) intercommunication, the other end is provided with intake pipe joint (16), intake pipe joint (16) and first connecting pipe (20) one end intercommunication, first connecting pipe (20) other end and air supply (19) intercommunication.
3. The device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 2, wherein: the side wall of the first air storage tank (1) is provided with a standby exhaust port (18), and a detachable sealing device is arranged in the standby exhaust port (18).
4. The device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 3, wherein: the inner surface of the standby exhaust port (18) is processed with threads, the sealing device is a sealing bolt, and the sealing bolt is in threaded connection with the standby exhaust port (18).
5. The device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 1, wherein: second gas holder (12) be connected with second manometer (9) through third trachea (8), second gas holder (12) lateral wall on be provided with fourth trachea (11), fourth trachea (11) one end and second gas holder (12) intercommunication, the other end and second connecting pipe (21) one end intercommunication, the other end and gate sealing device (25) intercommunication of second connecting pipe (21).
6. The device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 5, wherein: one end of the fourth air pipe (11) communicated with the second connecting pipe (21) is provided with a self-locking joint (10), and the second connecting pipe (21) is fixedly connected with the self-locking joint (10).
7. the device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 5, wherein: gate sealing device (25) in be provided with sealing member (26), gate sealing device (25) lateral wall is provided with aerating device (22), aerating device (22) including inflation inlet (23) and inflation inlet connecting pipe (24), inflation inlet connecting pipe (24) adopt threaded connection with inflation inlet (23), inflation inlet connecting pipe (24) outstanding gate sealing device (25) outer wall, second connecting pipe (21) and inflation inlet connecting pipe (24) intercommunication.
8. The device for testing the sealing property of the sealing element of the gate of the nuclear power plant as claimed in claim 5, wherein: the bottom of the second air storage tank (12) is fixedly connected with a support plate (13), and the bottom end of the support plate (13) is fixedly connected with a base (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256053.8U CN209764355U (en) | 2019-02-28 | 2019-02-28 | Nuclear power station gate sealing element sealing performance test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256053.8U CN209764355U (en) | 2019-02-28 | 2019-02-28 | Nuclear power station gate sealing element sealing performance test device |
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| CN209764355U true CN209764355U (en) | 2019-12-10 |
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| CN201920256053.8U Active CN209764355U (en) | 2019-02-28 | 2019-02-28 | Nuclear power station gate sealing element sealing performance test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405739A (en) * | 2021-06-19 | 2021-09-17 | 上海凯研机械设备有限公司 | Method and system for testing sealing performance of mechanical penetration piece |
| CN113758658A (en) * | 2021-10-11 | 2021-12-07 | 中国商用飞机有限责任公司 | Airplane pipeline airtightness test device and method |
| CN114112223A (en) * | 2021-11-12 | 2022-03-01 | 广东核电合营有限公司 | Nuclear condenser SF6Leak detector |
-
2019
- 2019-02-28 CN CN201920256053.8U patent/CN209764355U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405739A (en) * | 2021-06-19 | 2021-09-17 | 上海凯研机械设备有限公司 | Method and system for testing sealing performance of mechanical penetration piece |
| CN113405739B (en) * | 2021-06-19 | 2023-01-03 | 上海凯研机械设备有限公司 | Method and system for testing sealing performance of mechanical penetration piece |
| CN113758658A (en) * | 2021-10-11 | 2021-12-07 | 中国商用飞机有限责任公司 | Airplane pipeline airtightness test device and method |
| CN114112223A (en) * | 2021-11-12 | 2022-03-01 | 广东核电合营有限公司 | Nuclear condenser SF6Leak detector |
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