CN215338884U - Nuclear power gate is sealing washer leakproofness and life test device for penetration piece - Google Patents
Nuclear power gate is sealing washer leakproofness and life test device for penetration piece Download PDFInfo
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- CN215338884U CN215338884U CN202121113567.1U CN202121113567U CN215338884U CN 215338884 U CN215338884 U CN 215338884U CN 202121113567 U CN202121113567 U CN 202121113567U CN 215338884 U CN215338884 U CN 215338884U
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Abstract
The utility model discloses a sealing ring tightness and service life testing device for a nuclear power gate penetrating piece, which comprises a bottom plate, a motor and a testing cylinder, wherein the motor and the testing cylinder are arranged on the bottom plate, and a sealing test tool is arranged on the testing cylinder; a test rotating shaft is arranged on a motor shaft of the motor, and one end of the test rotating shaft, which is far away from the motor shaft, sequentially penetrates through the test cylinder and the sealing test tool; the sealing test tool comprises a tool sleeve, wherein a shaft hole is formed in the center of the tool sleeve, grooves are formed in the inner wall of the shaft hole, and the number of the grooves is two; the through hole is formed in the side wall of the tool sleeve, and one end, far away from the side wall, of the through hole extends to a position between the two grooves along the radius direction of the tool sleeve. The utility model can realize the test of the sealing performance and the service life of the sealing ring of the penetration piece, can effectively simulate the field working condition, realizes the test of the rotary leakage rate and the dynamic and static leakage rate of the sealing ring, meets the requirements of the design of the service life and the sealing performance of the sealing ring of the penetration piece, and avoids the nuclear leakage during the operation of the personnel gate.
Description
Technical Field
The utility model belongs to the technical field of nuclear power devices, and particularly relates to a sealing performance and service life testing device for a sealing ring for a nuclear power gate penetrating piece.
Background
The personnel gate is a component of a containment vessel of the nuclear power station and is a safety channel for the operation and the entering and exiting of maintenance personnel during the shutdown, loading and reloading and operation of a reactor. The hand wheel penetrating piece is one of important parts of the personnel gate, and the main function of the hand wheel penetrating piece is to realize the function of opening and closing the gate by rotating the hand wheel. The personnel gate penetrating piece is sealed to be used as an important component of a containment pressure-bearing boundary, so that the sealing performance and the safety of the containment pressure-bearing boundary part are ensured during normal operation and abnormal states of a reactor, and the sealing performance is required to be still achieved in an accident state.
According to the mechanical transmission speed ratio of the existing personnel gate, the door opening and closing cycle of the personnel gate can be realized when the hand wheel rotates about 100 circles, however, the existing penetrating piece sealing ring is only subjected to a wear test of 30000 circles, and the actual service life is not verified through experiments. The field penetration piece and the integral gate are processed into a whole, and the conditions for long-term rotation and sealing test are not provided. Whether the service life of the penetrating piece sealing ring is good or not has a great relation with the lubrication condition, the installation position of the personnel gate penetrating piece sealing ring cannot realize regular lubrication, lubrication can be realized only by means of lubricating grease added in the installation stage, and the lubrication condition cannot be verified. If the lubrication condition is once worsened, the abrasion speed of the sealing ring is greatly increased, and the service life is sharply reduced. The sealing structure of the existing personnel gate has traceable service life of only 300 cycles, which is less than or equal to the annual switching cycle of the personnel gate, and the personnel gate possibly leaks during the normal operation of the unit to damage the integrity of a containment system. The service life of the sealing ring of the existing personnel gate penetrating piece which can be verified is only 300 cycles, and the service life is basically the same as the number of times that the personnel gate must act every year. If the unit refueling period is prolonged from 12 months to 18 months, the sealing ring of the penetrating part is likely to break down in the normal period of the unit, the integrity and the sealing performance of the containment boundary are seriously threatened, and radioactive leakage is likely to cause damage to the environment. The number of cycles of sealing realization at present can not satisfy the requirement of power station life, and the nuclear power penetration piece sealing washer all has similar problem at present in china, develops a device that can simulate on-the-spot penetration piece operating condition and seal and the experimental of cycle life, is one of the keys of guaranteeing the safe operation of nuclear power station unit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the sealing ring for the nuclear power gate penetrating piece is poor in sealing performance and service life, and provides a sealing ring sealing performance and service life test device for the nuclear power gate penetrating piece.
In order to solve the technical problems, the utility model adopts the technical scheme that: the sealing ring tightness and service life testing device for the nuclear power gate penetrating piece is characterized by comprising a bottom plate, a motor and a testing cylinder, wherein the motor and the testing cylinder are arranged on the bottom plate, and a sealing test tool is detachably arranged on the testing cylinder; a test rotating shaft is mounted on a motor shaft of the motor, and one end of the test rotating shaft, which is far away from the motor shaft, sequentially penetrates through the test cylinder and the sealing test tool;
the sealing test tool comprises a tool sleeve, a shaft hole for allowing a test rotating shaft to pass through is formed in the center of the tool sleeve, grooves for accommodating sealing rings to be tested are formed in the inner wall of the shaft hole, and the number of the grooves is two; the through hole is formed in the side wall of the tool sleeve, and one end, far away from the side wall, of the through hole extends to the position between the two grooves along the radius direction of the tool sleeve.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized in that the number of the sealing test tools is four.
The sealing ring tightness and service life testing device for the nuclear power gate penetrating piece is characterized in that the four sealing test tools are divided into two groups, each group comprises two sealing test tools, the sealing test tools in the first group further comprise concave surface portions, the concave surface portions are arranged at the centers of tool sleeve pipes of the sealing test tools in the first group, and shaft holes of the sealing test tools in the first group are located at the centers of the concave surface portions; the sealing test tool in the second group further comprises a convex surface portion, the convex surface portion is arranged at the center of the tool sleeve of the sealing test tool in the second group, and the shaft hole of the sealing test tool in the second group is located at the center of the convex surface portion.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized in that a bolt and nut assembly used for installing the sealing test tool on the test barrel is arranged on the tool sleeve.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized by further comprising a simulation hand wheel, wherein the simulation hand wheel is mounted on a part, penetrating out of the sealing test tool, of the test rotating shaft.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized by further comprising a motor speed regulator which is connected with a motor and used for regulating the rotating speed of the motor.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized by further comprising a motor support for mounting a motor and a motor speed regulator support for mounting a motor speed regulator, wherein the motor support and the motor speed regulator support are fixedly arranged on the bottom plate.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized in that the testing cylinder comprises a testing cylinder body, a first mounting bracket and a second mounting bracket, wherein the first mounting bracket and the second mounting bracket are used for supporting and mounting the testing cylinder body; the sealing test tool is arranged at one end, close to the second mounting bracket, of the test cylinder body.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized by further comprising a leakage instrument and a gas pipeline communicated with the leakage instrument, wherein one end, far away from the leakage instrument, of the gas pipeline is communicated with the through hole.
The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized in that a stop valve is installed on a gas pipeline.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the sealing performance and service life test of the seal ring of the penetration piece is realized by arranging the bottom plate, the motor, the test cylinder body, the test rotating shaft and the seal test tool comprising the tool sleeve, the shaft hole, the groove and the through hole, the field working condition can be effectively simulated, the rotation leakage rate and the dynamic and static leakage rate of the seal ring can be tested, the requirements on the design of the service life and the sealing performance of the seal ring of the penetration piece are met, and the nuclear leakage during the operation of the personnel gate is avoided.
2. Preferably, the number of the sealing test tools is four, so that the field working condition can be simulated more truly and effectively, and the sealing performance test of the sealing rings at different parts of the penetrating piece is realized.
3. Preferably, the sealing test tool is fixed on the test barrel through the bolt and nut assembly, the tightness is high, and the assembly and disassembly are convenient.
4. Preferably, the test device also comprises a simulation hand wheel, real-time shaft pressure is provided for the test rotating shaft by the simulation hand wheel, the real-time shaft pressure is consistent with the actual operation working condition, and the field simulation authenticity is further improved.
5. Preferably, the utility model also comprises a motor speed regulator connected with the motor, different rotation frequencies can be set, corresponding simulation is carried out according to the actual rotation number of the penetration piece on different sites, and the rotation frequency range requirement of 1-300 rotation numbers/minute is realized.
6. Preferably, the test device also comprises a motor support, a first mounting support and a second mounting support, so that the arrangement stability of the motor and the test cylinder body can be effectively improved, and meanwhile, the test device is convenient for a tester to operate.
7. Preferably, the utility model also comprises a leakage instrument and a gas pipeline, and the leakage rate and the leakage amount of the gas are detected more sensitively and accurately.
8. The utility model has reliable principle, convenient application and high popularization and application value.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of fig. 1.
FIG. 3 is a schematic view of a position relationship between a first group of sealing test tooling shaft holes and a through hole.
Fig. 4 is a schematic structural view of a first group of seal test tools.
Fig. 5 is a schematic structural view of a second group of seal test tools.
Description of reference numerals:
1-a bottom plate; 2, a motor; 21-motor speed controller;
31-testing the cylinder body; 32 — a first mounting bracket; 33 — a second mounting bracket;
4-testing the rotating shaft; 5, simulating a hand wheel; 61-tooling sleeve;
62, forming a groove; 63-shaft hole; 64-a through hole;
611, a concave surface portion; 621-convex part; 71-a motor bracket;
72-motor governor mount; 81-gas line; 82-a leak meter;
83-stop valve.
Detailed Description
As shown in fig. 1 to 5, the embodiment provides a sealing ring sealing performance and service life testing device for a nuclear power gate penetrating piece, which includes a bottom plate 1, a motor 2 and a testing cylinder, wherein the motor 2 and the testing cylinder are arranged on the bottom plate 1, and a sealing test tool is detachably arranged on the testing cylinder; a test rotating shaft 4 is installed on a motor shaft of the motor 2, and one end, far away from the motor shaft, of the test rotating shaft 4 sequentially penetrates through the test cylinder and the sealing test tool;
the sealing test tool comprises a tool sleeve 61, a shaft hole 63 for allowing the tool sleeve 61 to pass through the test rotating shaft 4 is formed in the center of the tool sleeve 61, grooves 62 for accommodating sealing rings to be tested are formed in the inner wall of the shaft hole 63, and the number of the grooves 62 is two; a through hole 64 is formed in the side wall of the tool sleeve 61, and one end of the through hole 64, which is far away from the side wall, extends to the position between the two grooves 62 along the radius direction of the tool sleeve 61.
According to the utility model, the sealing performance and service life test of the seal ring of the penetration piece is realized by arranging the bottom plate, the motor, the test cylinder body, the test rotating shaft and the seal test tool comprising the tool sleeve, the shaft hole, the groove and the through hole, the field working condition can be effectively simulated, the rotation leakage rate and the dynamic and static leakage rate of the seal ring can be tested, the requirements on the design of the service life and the sealing performance of the seal ring of the penetration piece are met, and the nuclear leakage during the operation of the personnel gate is avoided.
In the sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece, the number of the sealing testing tools is four. The four sealing test tools respectively correspond to the sealing test tool for the outer door hand wheel penetrating piece, the sealing test tool for the inner door hand wheel penetrating piece, the sealing test tool for the transmission shaft penetrating piece or the sealing test tool for the input shaft penetrating piece, the field working condition can be simulated more truly and effectively, and the sealing performance test of the sealing rings at different parts of the penetrating piece is realized.
In the sealing ring tightness and service life testing device for the nuclear power gate penetrating piece, four sealing test tools are divided into two groups, each group comprises two sealing test tools, the sealing test tools in the first group further comprise a concave surface portion 611, the concave surface portion 611 is arranged at the center of a tool sleeve 61 of the first group of inner sealing test tools, and a shaft hole 63 of the first group of inner sealing test tools is located at the center of the concave surface portion 611; the sealed experimental frock of second group still includes protruding face portion 621, protruding face portion 621 sets up in the frock sleeve pipe 61 center department of the sealed experimental frock in the second group, and the shaft hole 63 of the sealed experimental frock in the second group is located protruding face portion 621 center department.
In the sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece, the tool sleeve 61 is provided with a bolt and nut assembly for installing the sealing test tool on the test barrel. Preferably, the sealing test tool is fixed on the test barrel through the bolt and nut assembly, the tightness is high, and the assembly and disassembly are convenient.
In the sealing ring tightness and service life testing device for the nuclear power gate penetrating piece, the testing device further comprises a simulation hand wheel 5, and the simulation hand wheel 5 is installed on the part, penetrating out of the sealing test tool, of the test rotating shaft 4. In the test process, the simulation hand wheel rotates along with the test rotating shaft. Preferably, the test device also comprises a simulation hand wheel, real-time shaft pressure is provided for the test rotating shaft by the simulation hand wheel, the real-time shaft pressure is consistent with the actual operation working condition, and the field simulation authenticity is further improved.
In the sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece, the testing device further comprises a motor speed regulator 21 which is connected with the motor 2 and used for regulating the rotating speed of the motor 2. Preferably, the utility model also comprises a motor speed regulator connected with the motor, different rotation frequencies can be set, corresponding simulation is carried out according to the actual rotation number of the penetration piece on different sites, and the rotation frequency range requirement of 1-300 rotation numbers/minute is realized.
In the sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece, the testing device further comprises a motor support 71 for mounting the motor 2 and a motor speed regulator support 72 for mounting the motor speed regulator 21, and the motor support 71 and the motor speed regulator support 72 are both fixedly arranged on the bottom plate 1.
In the sealing ring tightness and service life testing device for the nuclear power gate penetrating piece, the testing cylinder comprises a testing cylinder body 31, and a first mounting bracket 32 and a second mounting bracket 33 which are used for supporting and mounting the testing cylinder body 31, the first mounting bracket 32 and the second mounting bracket 33 are both fixedly arranged on the bottom plate 1, the motor bracket 71, the first mounting bracket 32 and the second mounting bracket 33 are arranged at intervals, and the first mounting bracket 32 is positioned between the motor bracket 71 and the second mounting bracket 33; the sealing test tool is arranged at one end of the test cylinder body 31 close to the second mounting bracket 33. Preferably, the test device also comprises a motor support, a first mounting support and a second mounting support, so that the arrangement stability of the motor and the test cylinder body can be effectively improved, and meanwhile, the test device is convenient for a tester to operate.
In the sealing ring tightness and service life testing device for the nuclear power gate penetrating piece, the testing device further comprises a leakage instrument 82 and a gas pipeline 81 communicated with the leakage instrument, and one end, far away from the leakage instrument 82, of the gas pipeline 81 is communicated with the through hole 64. Preferably, the utility model also comprises a leakage instrument and a gas pipeline, and the leakage rate and the leakage amount of the gas are detected more sensitively and accurately.
In the sealing ring sealing performance and life test device for the nuclear power gate penetrating member of the present embodiment, the gas line 81 is provided with the shutoff valve 83. Preferably, the gas detection device also comprises a stop valve arranged on the gas pipeline, so that leakage in the detection process can be effectively avoided.
The method for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece comprises the following steps:
selecting a proper sealing test tool from a sealing test tool for an outer door hand wheel penetrating piece, a sealing test tool for an inner door hand wheel penetrating piece, a sealing test tool for a transmission shaft penetrating piece and a sealing test tool for an input shaft penetrating piece;
step two, mounting the sealing ring to be tested in the groove 62, and penetrating the test rotating shaft 4 into the shaft hole 63 provided with the sealing ring to be tested;
step three, mounting the test rotating shaft 4 on a motor shaft of the motor 2, and connecting one end of the gas pipeline 81, which is far away from the leakage instrument 82, to the through hole 64;
step four, leak detection;
step five, after determining that the air is not leaked, opening the leakage instrument 82, and performing sealing detection according to preset time and stamping;
step six, starting a power supply of the motor 2, setting frequency conversion parameters and starting a motor speed regulator 21, driving a test rotating shaft 4 to rotate according to preset frequency by a motor shaft, and turning off the power supply of the motor 2 when the test rotating shaft reaches the preset rotation number to perform airtight detection;
step seven, repeating the step six until the airtightness detection does not meet the specification, and recording the frequency and the revolution;
and step eight, evaluating the test service life of the sealing ring to be tested, and determining the service life according to the actual on-site use frequency and the revolution and the relationship between the frequency and the revolution obtained in the step seven.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The sealing ring sealing performance and service life testing device for the nuclear power gate penetrating piece is characterized by comprising a bottom plate (1), a motor (2) and a testing cylinder, wherein the motor (2) and the testing cylinder are arranged on the bottom plate (1), and a sealing test tool is detachably arranged on the testing cylinder; a test rotating shaft (4) is mounted on a motor shaft of the motor (2), and one end, far away from the motor shaft, of the test rotating shaft (4) sequentially penetrates through the test cylinder and the sealing test tool;
the sealing test tool comprises a tool sleeve (61), a shaft hole (63) for allowing the tool sleeve to pass through the test rotating shaft (4) is formed in the center of the tool sleeve (61), grooves (62) for accommodating sealing rings to be tested are formed in the inner wall of the shaft hole (63), and the number of the grooves (62) is two; a through hole (64) is formed in the side wall of the tool sleeve (61), the through hole (64) is far away from one end of the side wall and extends to two parts between the grooves (62) along the radius direction of the tool sleeve (61).
2. The device for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece according to claim 1, wherein the number of the sealing test tools is four.
3. The sealing ring tightness and service life test device for the nuclear power gate penetrating piece according to claim 2, wherein four sealing test tools are divided into two groups, each group comprises two sealing test tools, the sealing test tools in the first group further comprise a concave surface portion (611), the concave surface portion (611) is arranged at the center of a tool sleeve (61) of the first group of sealing test tools, and the shaft hole (63) of the first group of sealing test tools is positioned at the center of the concave surface portion (611); the sealed experimental frock of second group in still includes protruding face portion (621), protruding face portion (621) set up in the frock sleeve pipe (61) center department of the sealed experimental frock of second group, and shaft hole (63) of the sealed experimental frock of second group are located protruding face portion (621) center department.
4. The device for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece according to claim 1, wherein a bolt and nut assembly for installing the sealing test tool on the test cylinder is arranged on the tool sleeve (61).
5. The sealing ring tightness and service life test device for the nuclear power gate penetrating piece according to claim 1, characterized in that the test device further comprises a simulation hand wheel (5), and the simulation hand wheel (5) is installed on a part of the test rotating shaft (4) penetrating out of the seal test tool.
6. The device for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece according to claim 1, characterized by further comprising a motor speed regulator (21) which is connected with the motor (2) and used for regulating the rotating speed of the motor (2).
7. The device for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece according to claim 6, further comprising a motor support (71) for mounting a motor (2) and a motor speed regulator support (72) for mounting a motor speed regulator (21), wherein the motor support (71) and the motor speed regulator support (72) are both fixedly arranged on the bottom plate (1).
8. The sealing ring tightness and service life test device for the nuclear power gate penetrating piece according to claim 7, characterized in that the test cylinder comprises a test cylinder body (31), and a first mounting bracket (32) and a second mounting bracket (33) which are used for supporting and mounting the test cylinder body (31), the first mounting bracket (32) and the second mounting bracket (33) are both fixedly arranged on the bottom plate (1), the motor bracket (71), the first mounting bracket (32) and the second mounting bracket (33) are arranged at intervals, and the first mounting bracket (32) is positioned between the motor bracket (71) and the second mounting bracket (33); the sealing test tool is arranged at one end, close to the second mounting bracket (33), of the test cylinder body (31).
9. The device for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece according to claim 1, wherein the device further comprises a leakage instrument (82) and a gas pipeline (81) communicated with the leakage instrument, and one end, far away from the leakage instrument (82), of the gas pipeline (81) is communicated with the through hole (64).
10. The device for testing the sealing performance and the service life of the sealing ring for the nuclear power gate penetrating piece according to claim 9, wherein a stop valve (83) is installed on the gas pipeline (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121113567.1U CN215338884U (en) | 2021-05-21 | 2021-05-21 | Nuclear power gate is sealing washer leakproofness and life test device for penetration piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121113567.1U CN215338884U (en) | 2021-05-21 | 2021-05-21 | Nuclear power gate is sealing washer leakproofness and life test device for penetration piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215338884U true CN215338884U (en) | 2021-12-28 |
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ID=79547645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121113567.1U Active CN215338884U (en) | 2021-05-21 | 2021-05-21 | Nuclear power gate is sealing washer leakproofness and life test device for penetration piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215338884U (en) |
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2021
- 2021-05-21 CN CN202121113567.1U patent/CN215338884U/en active Active
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