CN220673005U - Main steam isolation valve is from electrified area - Google Patents
Main steam isolation valve is from electrified area Download PDFInfo
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- CN220673005U CN220673005U CN202321888108.XU CN202321888108U CN220673005U CN 220673005 U CN220673005 U CN 220673005U CN 202321888108 U CN202321888108 U CN 202321888108U CN 220673005 U CN220673005 U CN 220673005U
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- main steam
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- 238000002955 isolation Methods 0.000 title claims abstract description 50
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 71
- 239000011707 mineral Substances 0.000 claims abstract description 71
- 238000009413 insulation Methods 0.000 claims abstract description 27
- 239000003292 glue Substances 0.000 claims abstract description 6
- 239000012212 insulator Substances 0.000 claims description 28
- 230000007704 transition Effects 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000002788 crimping Methods 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 description 197
- 238000010998 test method Methods 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 238000009863 impact test Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000012795 verification Methods 0.000 description 7
- 230000004044 response Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 3
- 238000013095 identification testing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920002530 polyetherether ketone Polymers 0.000 description 3
- 239000010964 304L stainless steel Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000011990 functional testing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model discloses a self-charging belt of a main steam isolation valve, and belongs to the field of main steam pipeline related equipment. The self-charging cable of the main steam isolation valve comprises a connector joint, a mineral insulation cable and a wire, wherein the connector joint is matched and plugged with a connector arranged on a limit switch of the main steam isolation valve, one end of the mineral insulation cable is connected with the connector joint, and the other end of the mineral insulation cable is connected with the wire. The connector joint is firmly connected with the mineral insulated cable by means of laser welding and glue filling, meanwhile, the mineral insulated cable and the wires are connected together by means of crimping, and the crimping sleeve and the heat shrinkage sleeve are further arranged.
Description
Technical Field
The utility model belongs to the field of main steam pipeline related equipment, and particularly relates to a main steam isolation valve self-contained cable.
Background
A main vapor isolation valve (MSIV) is a device mounted on the main vapor line that functions to isolate bi-directional fluid in the system in the event of a main vapor line break, and is designed to require that the MSIV limit switch be able to close quickly 5 seconds after receiving a close signal to limit vapor emissions. At present, a national 'Hualong-No. one' nuclear power station adopts a foreign imported main steam isolation valve, and because the main steam isolation valve has a short-time high-temperature operation condition, a special signal connector (MIRION company product in the United states) is configured on a valve limit switch of the main steam isolation valve, so that the special operation condition requirement is met.
The main steam isolation valve limit switch self-charging cable is matched equipment of the main steam isolation valve and is used for transmitting logic quantity signals (instructions or information), special operation condition requirements of the main steam isolation valve are required to be met, and a mineral insulation cable is usually used. The connector with the cable also needs to be matched and plugged with a connector arranged on the limit switch of the main steam isolation valve.
The connectors in the existing main steam isolation valve limit switches with cables are not matched with connectors arranged on the main steam isolation valve limit switches of the nuclear power station, so that connection is unstable, and safety is required to be improved.
Disclosure of Invention
Aiming at the problem that a connector in a self-contained cable of a main steam isolation valve limit switch is not matched with a connector arranged on the main steam isolation valve limit switch of a nuclear power station, the utility model aims to provide the self-contained cable of the main steam isolation valve, which comprises a connector joint, a mineral insulated cable and a wire. The utility model makes the connection between the connector joint and the mineral insulated cable firmer by means of laser welding and glue filling, enhances the tightness of the connection between the connector joint and the mineral insulated cable, enhances the safety when the utility model is used, simultaneously connects the mineral insulated cable and the wire together by means of crimping, and also arranges the crimping sleeve and the heat shrinkage sleeve.
The utility model aims to provide a main steam isolation valve self-charging cable which comprises a connector joint, a mineral insulation cable and a wire, wherein the connector joint is matched and plugged with a connector arranged on a limit switch of the main steam isolation valve, one end of the mineral insulation cable is connected with the connector joint, and the other end of the mineral insulation cable is connected with the wire.
The connector fitting includes a coupling nut, a plug housing, an insulator assembly, a press sleeve, and a cable cover.
The connecting nut is sleeved outside the plug shell.
In some embodiments, the coupling nut is located at one end of the plug housing.
The insulator assembly is located inside the plug housing.
The press sleeve is also located inside the plug housing, and the press sleeve is located between the insulator assembly and the cable cover.
The cable cover is sleeved at one end of the mineral insulated cable.
The insulator assembly includes a pin and a socket.
In some embodiments, the two ends of the insulator component are respectively provided with a contact pin and a jack, the contact pin and the jack near one end of the connecting nut of the insulator component are matched and plugged with a connector arranged on the limit switch of the main steam isolation valve, and the contact pin and the jack near one end of the pressing sleeve of the insulator component are connected with the mineral insulated cable.
In some embodiments, the pins and receptacles are fixedly connected to a mineral insulated cable.
In some embodiments, the pins and receptacles are fixedly connected to copper conductors stripped from the mineral insulated cable.
In some embodiments, the pins and sockets are soldered to copper conductors stripped from the mineral insulated cable.
In some embodiments, the pins and receptacles are laser welded to copper conductors stripped from the mineral insulated cable.
In some embodiments, the length of the stripped copper conductor of the mineral insulated cable is no greater than 10 millimeters.
The inner cavity of the plug shell is filled with glue.
The plug housing is provided with a transition thread sleeve.
In some embodiments, the transition thread sleeve is located at an end of the plug housing proximate the cable cover.
And the joint of the cable cover and the transition thread sleeve is fixedly connected.
In some embodiments, the junction of the cable cover and the transition thread sleeve is laser welded.
The cable cover is fixedly connected with the mineral insulated cable.
In some embodiments, the cable cover is laser welded to the mineral insulated cable.
The mineral insulated cable is provided with an end seal.
In some embodiments, an end of the mineral insulated cable remote from the connector fitting is provided with an end seal.
In some embodiments, the end sealing of the mineral insulated cable means that the end of the mineral insulated cable is sealed by glass sintering, and the end of the mineral insulated cable is sealed by glass sintering, so that the cable is prevented from being wetted, and the insulation performance of the cable is ensured.
The mineral insulated cable is connected with the wire.
In some embodiments, the mineral insulated cable is crimped with a wire.
In some embodiments, the mineral insulated cable exposes a core that is crimped with a wire.
In some embodiments, the outer sheath of the mineral insulated cable is made of 304L stainless steel, the core wire is a copper core wire, and the wire is a PEEK wire.
And a crimping sleeve and a heat shrinkage sleeve are arranged between the mineral insulated cable and the lead.
In some embodiments, the crimp sleeve is sleeved outside the crimp of the exposed core wire and the wire of the mineral insulated cable.
In some embodiments, the heat shrink sleeve is sleeved outside of the crimp sleeve.
In some embodiments, the heat shrink is a K1 grade heat shrink.
The utility model has the technical effects and advantages that:
1. according to the utility model, the connector joint is firmly connected with the mineral insulated cable in a laser welding and glue filling mode, so that the tightness of the connection part of the connector joint and the mineral insulated cable is enhanced, and the safety of the cable is also enhanced when the cable is used.
2. The mineral insulated cable and the wires are connected together in a crimping manner, and the crimping sleeve and the heat shrinkage sleeve are further arranged, so that the mineral insulated cable and the wires are connected more tightly and more firmly by the design.
3. According to the utility model, the end part of the mineral insulated cable connected with the lead is sealed, so that water inflow in the mineral insulated cable is prevented, the influence on the main steam isolation valve is reduced, and the electricity safety is further enhanced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a self-contained electric belt of the main vapor isolation valve of the present application;
FIG. 2 is an enlarged schematic view at A of FIG. 1;
FIG. 3 is a side view of the connector fitting of the present application at B;
FIG. 4 is a cross-sectional view of the connector fitting of the present application;
FIG. 5 is a side view of the connector fitting of the present application;
fig. 6 is a perspective view of a connector fitting of the present application.
FIG. 7 is a plot of a SPERI-YJ-01 transfer function.
FIG. 8 is a graph of transfer functions of SPERI-YJ-02 and SPERI-YJ-03.
FIG. 9 is a plot of the X-direction seismic response.
FIG. 10 is a graph of the Y-direction seismic response spectrum.
FIG. 11 is a graph of the Z-direction seismic response spectrum.
FIG. 12 is a plot of an X-direction sinusoidal sweep test.
Fig. 13 is a graph of a Y-direction sinusoidal sweep test.
Fig. 14 is a plot of a sinusoidal sweep test in the Z direction.
Fig. 15 is a test curve of one beat for each frequency point in the X direction.
Fig. 16 is a test curve of one beat for each frequency point in the Y direction.
Fig. 17 is a test plot of one beat for each frequency point in the Z direction.
FIG. 18 shows DBA test temperature and pressure curves.
In the figure:
1. a connector fitting; 1.1, connecting nuts; 1.2, a plug housing; 1.3, an insulator assembly; 1.4, inserting needles; 1.5, jack; 1.6, pressing the sleeve; 1.7, a transitional thread sleeve; 1.8, a cable cover;
2. a mineral insulated cable; 2.1, end sealing; 2.2, core wire;
3. a wire; 4. crimping the sleeve; 5. a heat-shrinkable sleeve; 6. and a terminal block.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
Referring to fig. 1 to 6 (the orientation or positional relationship indicated in the present embodiment is based on that shown in fig. 1), in the present embodiment there is provided a main steam isolation valve self-contained electric cable comprising a connector fitting 1, a mineral insulated cable 2 and a lead wire 3,
the cable connector shell is made of 316L stainless steel with a bushing, is matched with a connector interface of a main steam isolation valve limit switch, 4 contact points of the connector are brass with good conductivity, and comprise two contact pins 1.4 with the outer diameter of 1 millimeter and two insertion holes 1.5 with the inner diameter of 1 millimeter,
the connector joint 1 comprises a connecting nut 1.1, a plug housing 1.2, an insulator assembly 1.3, a pressing sleeve 1.6 and a cable cover 1.8, wherein the connecting nut 1.1 is sleeved outside the plug housing 1.2, the connecting nut 1.1 is positioned at the left end of the plug housing 1.2,
the insulator assembly 1.3 is positioned in the plug shell 1.2, the insulator assembly 1.3 comprises a contact pin 1.4 and a jack 1.5, the left end of the insulator assembly 1.3 is provided with two contact pins 1.4 and two jacks 1.5, the contact pin 1.4 and the jack 1.5 at the left end of the insulator assembly 1.3 are matched and plugged with connectors arranged on a limit switch of a main steam isolation valve, the right end of the insulator assembly 1.3 is also provided with two contact pins 1.4 and two jacks 1.5, the contact pin 1.4 and the jack 1.5 at the right end of the insulator assembly 1.3 are fixedly connected with the mineral insulated cable 2 (the core wire 2.2 of the mineral insulated cable 2 is formed by four copper cores, in particular to the left end of the mineral insulated cable 2, the stripped copper core wire has a length not more than 10 mm, and then the stripped copper core wire passes through a cable cover 1.8 and a pressing sleeve 1.6 respectively, and the four copper core wires are welded with the two contact pins 1.4 and the jack 1.5 at the right end of the insulator assembly 1.3 respectively, and the insulator assembly 1.3 are not welded with the insulator assembly 1.6 and the insulator assembly 1.3 is not welded with the insulator assembly 1.6;
the press sleeve 1.6 is also positioned inside the plug housing 1.2, the press sleeve 1.6 is positioned at the right end of the plug housing 1.2, and the press sleeve 1.6 is positioned between the insulator assembly 1.3 and the cable cover 1.8 (the press sleeve 1.6 is an interference fit and cannot be pressed into place before the cable is not assembled);
the inner cavity of the plug housing 1.2 is filled with glue, the plug housing 1.2 is provided with a transition thread sleeve 1.7, the transition thread sleeve 1.7 is positioned at the right end of the plug housing 1.2, the right end of the transition thread sleeve 1.7 is attached to the left end of the cable cover 1.8, and the attachment part of the left end of the cable cover 1.8 and the transition thread sleeve 1.7 is fixedly connected (the fixed connection refers to laser welding, the laser welding has higher accuracy, the welding time can be shortened, the loss of the connector joint 1 and the mineral insulated cable 2 can be reduced, and the cost is relatively reduced);
the cable cover 1.8 is positioned on the right side of the plug housing 1.2, the cable cover 1.8 is sleeved at the left end of the mineral insulated cable 2, and the right end of the cable cover 1.8 is fixedly connected with the mineral insulated cable (the fixed connection refers to laser welding);
the mineral insulated cable 2 comprises an outer sheath and a core wire 2.2, wherein the outer sheath is made of 304L stainless steel, the diameter of the outer sheath is 8 mm, the core wire 2.2 is composed of four copper cores, the maximum cross-sectional area of the core wire 2.2 is 1 square mm, good insulation is provided between the core wire 2.2 of the cable and the outer sheath (ensuring that electric coupling can not be generated between the outer sheath and a cable tray),
the mineral insulated cable 2 is provided with an end seal 2.1, and the end seal 2.1 is positioned at the right end of the mineral insulated cable 2 (the end seal 2.1 refers to that the end of the mineral insulated cable 2 is sealed by glass sintering, and the end of the mineral insulated cable 2 is sealed by glass sintering, so that the cable is prevented from being wetted and the insulation performance of the cable is ensured);
the right end of the mineral insulated cable 2 is connected with a wire 3 (the wire 3 is PEEK wire 3), the mineral insulated cable 2 is in pressure connection with the wire 3 (the pressure connection here means that the right end of the mineral insulated cable 2 exposes a core wire 2.2, the core wire 2.2 is in pressure connection with the lower end of the wire 3), a pressure connection sleeve 4 and a heat shrinkage sleeve 5 are arranged between the mineral insulated cable 2 and the wire 3, the pressure connection sleeve 4 is sleeved outside the pressure connection part of the core wire 2.2 exposed by the mineral insulated cable 2 and the wire 3, the heat shrinkage sleeve 5 is sleeved outside the pressure connection sleeve 4, the heat shrinkage sleeve 5 is a K1-grade heat shrinkage sleeve 5 (thereby the switching from the mineral insulated cable 2 to a flexible cable is achieved, the external flexible cable is a single-core wire 3 with a PEEK insulating layer, and a wire 3 wire gauge 16) and the upper end of the wire is connected with a terminal strip 6 (the wire is connected with the terminal strip 6).
In this embodiment, the main steam isolation valve performs prototype identification on the self-contained electric belt, specifically as follows:
1. identification prototype list
2. Test item and results
1. Basic functional test
1.1 dielectric Strength test
Test environment: the temperature was 21.3℃and the relative humidity was 42%.
Test implementation: for each prototype, a 50Hz ac voltage was applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 700V for at least 1 minute.
Acceptance criteria: no dielectric breakdown or arcing is allowed.
Test results: through the test, the dielectric strength meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
1.2 insulation resistance test
Test environment: the temperature was 21.3℃and the relative humidity was 42%.
Test implementation: for each prototype, a dc voltage is applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 500V for at least 1 minute until the measurement was sufficiently stable.
Acceptance criteria: insulation resistance is not less than 1×10 9 Ω。
Test results: through the test, the insulation resistance meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
1.3 electric continuity test
Test environment: the temperature was 21.3℃and the relative humidity was 42%.
Test implementation: the connectivity of the circuit is checked with a buzzer.
Acceptance criteria: no electrical discontinuity is allowed.
Test results: through the test, the electrical continuity meets the requirements of the identification outline and the test procedure, and thus the test is considered to pass.
2. Impact test
Because the length of the main steam isolation valve self-contained electric sample machine is too long (more than 35 m), the main steam isolation valve self-contained electric sample machine cannot be installed and fixed on an impact test stand, and in view of the impact test, the connector and the connecting part of the connector and the mineral insulated cable 2 are mainly considered, and a tester cuts off the mineral insulated cable 2 of the standby sample machine to manufacture an impact test sample piece. In addition to the length shortening of the mineral insulated cable 2, the impact test prototype is consistent with the main steam isolation valve self-contained cable prototype, representative,
the test process comprises the following steps: the sample machine is fixed on the impact test bed through a clamp, the installation directions are respectively the X-axis direction, the Y-axis direction and the Z-axis direction, the test waveform adopts half sine waves, and the impact times in each direction are 3 times. Electrical continuity monitoring was performed during the test.
The following values (margin + 10%) are used for the jerk:
x direction (horizontal, axial): 25.5g; y direction (horizontal, radial): 21g; z direction (vertical, radial): 7g. Wherein the gravitational acceleration g=9.81 m/s 2.
Test results: no electrical discontinuity is found in the test, and after the test is finished, the prototype has no phenomena such as mechanical damage, cracks, deformation and the like, and the test process and the result meet the requirements of the identification outline and the test procedure, so that the test is considered to pass.
3. Functional verification test (after impact test)
3.1 dielectric Strength test
Test environment: the temperature was 24.2℃and the relative humidity was 51%.
Test implementation: for each prototype, a 50Hz ac voltage was applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 700V for at least 1 minute.
Acceptance criteria: no dielectric breakdown or arcing is allowed.
Test results: through the test, the dielectric strength meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
3.2 insulation resistance test
Test environment: the temperature was 24.2℃and the relative humidity was 51%.
Test implementation: for each prototype, a dc voltage is applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 500V for at least 1 minute until the measurement was sufficiently stable.
Acceptance criteria: insulation resistance is not less than 1×10 9 Ω。
Test results: through the test, the insulation resistance meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
3.3 Electrical continuity test
Test environment: the temperature was 24.2℃and the relative humidity was 51%.
Test implementation: the connectivity of the circuit is checked with a buzzer.
Acceptance criteria: no electrical discontinuity is allowed.
Test results: through the test, the electrical continuity meets the requirements of the identification outline and the test procedure, and thus the test is considered to pass.
4. Shock resistance test
The process of the earthquake resistance test is as follows:
(1) Probing the resonance frequency before the earthquake resistance test; (2) multi-frequency seismic testing (RRS);
(3) Sinusoidal sweep test (2/3 RIM); (4) a safe shutdown test (RIM);
(5) Resonance frequency probing after the shock resistance test. Electrical continuity monitoring was performed during the test.
(1) Resonance frequency probing before shock resistance test
And obtaining the test results of resonance frequency points between 1 and 100Hz according to the transfer function curves of the dynamic characteristic exploration test before and after the earthquake resistance test, wherein the test results are shown in Table 10.
Table 10 prototype resonance frequency point test results
SPERI-YJ-0 transfer function curves, see FIG. 7; SPERI-YJ-02 and SPERI-YJ-03 transfer function curves are shown in FIG. 8.
(2) Multifrequency earthquake test (RRS)
Multifrequency seismic tests are classified into low level seismic (OBE) and safe shut-down seismic (SSE) tests, with OBE taking 1/2SSE.
The shock test was performed 5 OBEs followed by 1 SSE, where OBEs take 1/2SSE. The three orthogonal directions should be tested simultaneously for random multifrequency for at least 30S, for a strong signal segment for at least 20S, and for a frequency range of 1-60 Hz. The three orthogonal directions simultaneously generate mutually independent artificial simulation seismic waves, and the coherence function value between the artificial simulation seismic waves is smaller than 0.5 or the absolute value of the correlation coefficient is smaller than 0.3. Damping ratio is 5%. The test should be performed with a 10% increase in margin.
Test Response Spectrum (TRS) envelope table 7 Test Requirement Response Spectrum (TRRS), wherein the SSE test lines are shown in fig. 9-11, wherein the blue curve is TRS and the red curve is TRRS. Because the prototype has no resonance phenomenon below 5Hz, the TRS only needs to be enveloped to TRRS of 3.5Hz, and certain excitation is still given to the prototype within the range of 1Hz to 3Hz according to the capability of the seismic station.
Table 7RRS test requires a response spectrum (5% damping ratio, 10% margin)
| Frequency (Hz) | OBE(g) | SSE(g) |
| 1 | 0.55 | 1.1 |
| 3 | 4.95 | 9.9 |
| 10 | 4.95 | 9.9 |
| 40 | 1.65 | 3.3 |
| 60 | 1.65 | 3.3 |
(3) Sinusoidal sweep test (2/3 RIM)
Two sinusoidal sweep tests were performed in each orthogonal coordinate axis direction (three total), with an acceleration of 2/3SSE plus 10% margin, ranging from 2Hz to 35Hz to 2Hz (see Table 8), and sweep rates of 1 octave per minute.
Table 8 Single frequency test acceleration requirement (10% margin)
| Frequency (Hz) | OBE(g) | SSE(g) |
| 2 | 0.88 | 1.32 |
| 2.52 | 1.1 | 1.65 |
| 3.17 | 1.364 | 2.046 |
| 4 | 1.701 | 2.552 |
| 5.04 | 2.119 | 3.179 |
| 6.35 | 2.64 | 3.96 |
| 8 | 3.3 | 4.95 |
| 10.08 | 3.3 | 4.95 |
| 12.7 | 3.3 | 4.95 |
| 16 | 3.3 | 4.95 |
| 20.16 | 3.3 | 4.95 |
| 25.4 | 3.3 | 4.95 |
| 32 | 3.3 | 4.95 |
| 35 | 3.3 | / |
The X-direction sine sweep test curve is shown in the following figure 12; the Y-direction sine sweep test curve is shown in the following figure 13; the Z-direction sinusoidal sweep test curve is shown in fig. 14 below.
(4) Safe shutdown test (RIM)
A series of sine beat wave tests are carried out on each orthogonal coordinate axis direction (three directions), and the position of each 1/3 octave is selected within the range of 2Hz to 32 Hz. At each test frequency, the acceleration level contained a margin of 10% (see table 8). Each frequency bin should be subjected to a series of sinusoidal beat tests from 12 to 15 cycles/beat for a duration of at least 15 seconds.
The test curves for one beat of each frequency point in the X direction are shown in FIGS. 15 (a) to (m).
The test curves for one beat of each frequency point in the Y direction are shown in fig. 16 (a) to (m).
The test curves for one beat of each frequency point in the Z direction are shown in FIGS. 17 (a) - (m).
Test results: before and after the earthquake-proof test, the structure of the prototype is not damaged, the electrical continuity of the prototype is monitored during the test, the transient breaking phenomenon is not generated, and the test process and the result meet the requirements of the outline identification, so that the test is considered to pass.
5. Functional verification test (after shock resistance test)
5.1 dielectric Strength test
Test environment: the temperature was 26.1℃and the relative humidity was 51%.
Test implementation: for each prototype, a 50Hz ac voltage was applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 700V for at least 1 minute.
Acceptance criteria: no dielectric breakdown or arcing is allowed.
Test results: through the test, the dielectric strength meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
5.2 insulation resistance test
Test environment: the temperature was 26.1℃and the relative humidity was 51%. .
Test implementation: for each prototype, a dc voltage is applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 500V for at least 1 minute until the measurement was sufficiently stable.
Acceptance criteria: insulation resistance is not less than 1×10 9 Ω。
Test results: through the test, the insulation resistance meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
5.3 electrical continuity test
Test environment: the temperature was 26.1℃and the relative humidity was 51%. .
Test implementation: the connectivity of the circuit is checked with a buzzer.
Acceptance criteria: no electrical discontinuity is allowed.
Test results: through the test, the electrical continuity meets the requirements of the identification outline and the test procedure, and thus the test is considered to pass.
6. Serious accident test (DBA test)
The installation of the prototype simulates the installation state of the main steam isolation valve in the nuclear power station by self-carrying the electric belt, the test prototype is fixed on a platform in a test container, and the stability of the test prototype is kept in the test process. The cable passes through the penetrating piece to pass through the outside of the test cabin and completes the installation of the cabin outside circuit. A temperature measuring sensor and a pressure measuring sensor are arranged in the test bin.
The DBA test was performed as follows:
stage 1 is: early stage of the test. When the temperature in the test device reaches 50 ℃, the pressure is kept within the tolerance range of + -10 kPa of the standard condition, the test device is kept for at least half an hour, so that the environment in the test chamber reaches a stable state.
Stage 2 is: transient phase. The temperature and pressure in the test chamber were brought to 179 c/170 kPa (gauge pressure, hereinafter) within 30 seconds by controlling the amount of steam entering and exiting the test chamber after the start of the test. The temperature and pressure parameters in the bins were then controlled according to the requirements of table 4.
During the test, electrical continuity was monitored for prototype SPERI-YJ-01 and SPERI-YJ-02, and no interruption occurred during the test, and insulation resistance testing (measured every 1 hour) was performed for prototype SPERI-YJ-03.
After the test is finished, the test cabin is communicated with the atmospheric environment, steam in the test cabin is discharged, the drainage valve is opened, and the test cabin enters a natural cooling state.
And opening the test bin, and performing appearance inspection on the test prototype.
And performing a functional verification test on the test prototype.
Table 4 severe accident test data sheet
| Time (S) | Temperature (. Degree. C.) | Time (S) | Gauge pressure (kPa) |
| 0 | 50 | 0 | 0 |
| 30 | 179 | 30 | 170 |
| 10800 | 179 | 31920 | 170 |
| 10860 | 195 | ||
| 11460 | 195 | ||
| 11520 | 179 | ||
| 31920 | 179 |
Test results:
the main steam isolation valve is provided with a power supply to complete a DBA test, the test process meets the test requirement, and the test temperature and pressure curves are shown in figure 18.
During the DBA test, the test prototypes SPERI-YJ-01 and SPERI-YJ-02 were monitored for electrical continuity and no electrical discontinuity was found.
In the DBA test process, an insulation resistance test (measured every 1 hour) is carried out on a test prototype SPERI-YJ-03, and the insulation resistance test result meets the acceptance criterion requirement.
After the DBA test, the measurement results of the test prototype dielectric strength test, the insulation resistance test and the electrical continuity test meet the acceptance criterion requirement.
The course and results of the test meet the requirements of the identification outline and the test is therefore considered to pass.
7. Functional verification test (after serious accident test)
7.1 dielectric Strength test
Test environment: the temperature was 26.2℃and the relative humidity was 59%.
Test implementation: for each prototype, a 50Hz ac voltage was applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 700V for at least 1 minute.
Acceptance criteria: no dielectric breakdown or arcing is allowed.
Test results: through the test, the dielectric strength meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
7.2 insulation resistance test
Test environment: the temperature was 26.2℃and the relative humidity was 59%.
Test implementation: for each prototype, a dc voltage is applied successively between each core wire 2.2 and the other core wires 2.2 connected to ground in the same prototype. The test voltage was 500V for at least 1 minute until the measurement was sufficiently stable.
Acceptance criteria: insulation resistance is not less than 1×10 9 Ω。
Test results: through the test, the insulation resistance meets the requirements of the identification outline and the test procedure, and the test is considered to pass.
7.3 electrical continuity test
Test environment: the temperature was 26.2℃and the relative humidity was 59%.
Test implementation: the connectivity of the circuit is checked with a buzzer.
Acceptance criteria: no electrical discontinuity is allowed.
Test results: through the test, the electrical continuity meets the requirements of the identification outline and the test procedure, and thus the test is considered to pass.
3. Identification result
1. Identification test results
The main steam isolation valve passes through a qualification test specified by the technical conditions of the main steam isolation valve self-charging belt, and the test result shows that: the performance index of the main steam isolation valve self-charging model machine completely meets the design and standard requirements, and meets the requirements of the main steam isolation valve self-charging environment, earthquake resistance and severe accident working conditions.
The results of the identification test are shown in Table 13 below.
TABLE 13 identification test results
| Sequence number | Test item | Identifying outline clauses | Test procedure (present report section) | Test results |
| 1 | Basic functional test | 8.1.1 | 4.2 | By passing through |
| 2 | Impact test | 8.2.2 | 4.3 | By passing through |
| 3 | Functional verification test | 8.1.2 | 4.4 | By passing through |
| 4 | Shock resistance test | 8.2.1 | 4.5 | By passing through |
| 5 | Functional verification test | 8.1.2 | 4.6 | By passing through |
| 6 | Severe accident test | 8.2.3 | 4.7 | By passing through |
| 7 | Functional verification test | 8.1.2 | 4.8 | By passing through |
2. Identification of lifetime
The materials used by the main steam isolation valve self-charging sampler meet the use conditions of the design life of 60 years, and the sampler can be considered to have the identification life of 60 years and meet the design requirement.
The master vapor isolation valve is shown in table 2 from the prototype charged bill of materials.
TABLE 2 bill of materials
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (9)
1. A main vapor isolation valve self-contained cable comprising: the device comprises a connector joint (1), a mineral insulated cable (2) and a wire (3), wherein the connector joint (1) is matched and inserted with a connector arranged on a limit switch of a main steam isolation valve, one end of the mineral insulated cable (2) is connected with the connector joint (1), and the other end of the mineral insulated cable (2) is connected with the wire (3);
connector joint (1) is including coupling nut (1.1), plug casing (1.2), insulator subassembly (1.3), pressure cover (1.6) and cable cover (1.8), coupling nut (1.1) cover is established in the outside of plug casing (1.2), insulator subassembly (1.3) are located the inside of plug casing (1.2), pressure cover (1.6) also are located the inside of plug casing (1.2), and pressure cover (1.6) are located between insulator subassembly (1.3) and cable cover (1.8), one end at mineral insulated cable (2) is established to cable cover (1.8) cover.
2. The main steam isolation valve self-contained cable according to claim 1, wherein the insulator assembly (1.3) comprises a contact pin (1.4) and a jack (1.5), the contact pin (1.4) and the jack (1.5) are arranged at two ends of the insulator assembly (1.3), the contact pin (1.4) and the jack (1.5) of the insulator assembly (1.3) close to the pressing sleeve (1.6) are connected with the mineral insulation cable (2), and the contact pin (1.4) and the jack (1.5) of the insulator assembly (1.3) close to the connecting nut (1.1) are matched and plugged with a connector arranged on the main steam isolation valve limit switch.
3. A main steam isolation valve self-contained cable according to claim 2, wherein the pins (1.4) and sockets (1.5) are soldered or laser welded to the mineral insulated cable (2).
4. A main steam isolation valve self-contained cable according to claim 1, characterised in that the cavity of the plug housing (1.2) is filled with glue.
5. A main steam isolation valve self-contained cable according to claim 1, characterized in that the plug housing (1.2) is provided with a transition thread bush (1.7), the transition thread bush (1.7) being located at the end of the plug housing (1.2) close to the cable cover (1.8).
6. A main steam isolation valve self-contained cable according to claim 5, wherein the joint of the cable cover (1.8) and the transition thread sleeve (1.7) is welded by laser, and the cable cover (1.8) and the mineral insulated cable (2) are welded by laser.
7. A main steam isolation valve self-contained cable according to claim 1, characterized in that the end of the mineral insulated cable (2) remote from the connector fitting (1) is provided with an end seal (2.1).
8. A main steam isolation valve self-contained cable according to claim 1, wherein the mineral insulated cable (2) is crimped with a wire (3).
9. A main steam isolation valve self-contained cable according to claim 1, characterized in that a crimp sleeve (4) and a heat shrink sleeve (5) are arranged between the mineral insulated cable (2) and the conductor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321888108.XU CN220673005U (en) | 2023-07-18 | 2023-07-18 | Main steam isolation valve is from electrified area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321888108.XU CN220673005U (en) | 2023-07-18 | 2023-07-18 | Main steam isolation valve is from electrified area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220673005U true CN220673005U (en) | 2024-03-26 |
Family
ID=90336095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321888108.XU Active CN220673005U (en) | 2023-07-18 | 2023-07-18 | Main steam isolation valve is from electrified area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220673005U (en) |
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2023
- 2023-07-18 CN CN202321888108.XU patent/CN220673005U/en active Active
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